CTAN sync 202006130302

364 files changed, 1564 insertions, 72610 deletions

diff --git a/graphics/epix/AUTHORS b/graphics/epix/AUTHORS
deleted file mode 100644
index 24ded708ef..0000000000
--- a/graphics/epix/AUTHORS
+++ /dev/null
@@ -1,5 +0,0 @@
-Jay P. Belanger
-Marcus D. Hanwell
-Andrew D. Hwang
-
-Please see THANKS for the list of contributors.
\ No newline at end of file
diff --git a/graphics/epix/BUGS b/graphics/epix/BUGS
deleted file mode 100644
index 3436bad2ed..0000000000
--- a/graphics/epix/BUGS
+++ /dev/null
@@ -1,24 +0,0 @@
-ePiX-1.2 -- BUGS
-
-Last Change: September 19, 2007
-
-This file lists known idiosyncrasies ("features, not bugs") whose
-behavior may be unexpected. Some are too minor and/or messy to fix,
-some are outside the author's control.
-
-* The build-time script elaps-local calls epix, not epix-local.
-
-* Polygons are not shaded with simulated ambient light. The "fill"
-  attribute controls whether or not to color fill.
-
-* Surface mesh elements are always color-filled. The fill attribute
-  controls whether to use cos^2 (on) or flat (off) shading.
-
-* Dot-like markers may be slightly larger in tikz than in pst/eepic.
-
-* Line underlayer widths may be larger in pst than in eepic/tikz.
-
-* Line caps are round in eepic, square (butt) in pst/tikz.
-
-* Affine maps have no effect on label alignment, only on the offset.
-  (N.B. Non-invertible affine maps may cause NaN label positions.)
\ No newline at end of file
diff --git a/graphics/epix/COPYING b/graphics/epix/COPYING
deleted file mode 100644
index 14db8fc79d..0000000000
--- a/graphics/epix/COPYING
+++ /dev/null
@@ -1,340 +0,0 @@
-		    GNU GENERAL PUBLIC LICENSE
-		       Version 2, June 1991
-
- Copyright (C) 1989, 1991 Free Software Foundation, Inc.
- 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- Everyone is permitted to copy and distribute verbatim copies
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-  The licenses for most software are designed to take away your
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diff --git a/graphics/epix/ChangeLog b/graphics/epix/ChangeLog
deleted file mode 100644
index 832d25f939..0000000000
--- a/graphics/epix/ChangeLog
+++ /dev/null
@@ -1,743 +0,0 @@
-ePiX 1.1.x
-
-Andrew D. Hwang  <ahwang -at- mathcs -dot- holycross -dot- edu>
-
-2007-10.03 (ADH)
-	Version 1.2.1
-	* configure.ac, Makefile.am: New option --enable-epix-el
-	  (formerly --with-nolisp)
-	* doc/Makefile.am: Build ps, pdf under manual-stamp so package can
-	  be built with parallel make (error noted by Ren\'e Rebe)
-
-2007-09.28 (ADH)
-	* legend_tile.cc, legend_tile.h: Store offset as a pair
-	* legend.cc: (draw) Pass offset as a pair
-	* screen_data.cc: (paste) "affine" object named af, not affine
-
-2007-09.26 (ADH)
-	Version 1.2.0-2
-	* debug.h, interval.cc: #include <cstdlib> (Maik Beckmann)
-	* (Multiple files) Replace const double arguments by double
-
-2007-09.25 (ADH)
-	Version 1.2.0-1
-	* doc/plotting3.xp: crop -> set_crop, and update image
-
-2007-09.24 (ADH)
-	Version 1.1.22 (promoted to 1.2.0)
-	* lens.cc: bubble lens projects to camera sphere
-
-	* angle_units.cc, angle_units.h: (convert_to_radians) Remove
-	 - (to_radians, to_degrees, from_degrees) New functions
-	 - Store rad/unit, unit/deg, and rev/unit for efficiency
-	
-	* state.cc, state.h: (angle) Remove function
-	 - (full_turn) Reimplement as from_degrees(360)
-	* functions.cc: Use angle_state::to_radians in trig functions
-	
-	* glyph.cc: (map_by) Reimplement label angle computation
-	* label_style.cc, label_style.h: New public void constructor
-	 - Non-void constructor is private
-	 - (label_angle) Pass non-const double
-	 - (label_angle) Use the_angle_style to convert to degrees
-	 - (label_angle()) Returns degrees, not current angle units
-
-2007-09.23 (ADH)
-	Version 1.1.21
-	* affine.cc, affine.h: Member functions accept P as well as pair
-
-2007-09.22 (ADH)
-	* length.cc: Remove support for scaled pt
-	* state.cc, state.h: crop() -> set_crop()
-	 - (crop) New function, calls screen::crop
-	 - (crop_rectangle, crop_ellipse, crop_diamond): Set crop state
-
-	* lens.cc: fisheye, bubble are *not* linear
-	* lens.cc, lens.h: (needs_clip) New function
-	* camera.cc, camera.h: (needs_clip) New function
-	 - the_camera() -> cam()
-	* path_data.cc: (photo) Clip to camera.front_plane only if nec.
-	* arrow_data.cc: (photo) Clip to camera.front_plane only if nec.
-
-	* facet.cc, geometry.cc: camera, the_camera() -> cam()
-	* arrow_data.cc, axis.cc, curves.cc, label_data.cc, legend.cc,
-	  legend_item.cc, path.cc, path_data.cc, screen_data.cc,
-	  sphere.cc, state.cc: the_camera() -> cam()
-
-2007-09.19 (ADH)
-	Version 1.1.20
-	* pen_line.cc: (add_to_pallet) Needn't check for unset
-	* pen_data.cc, pen_data.h: (is_empty) New member
-	* pen_fill.cc: (is_unset) Check line pen for invisibility
-	 - (print_to) If bd non-solid, draw fill/border only if visible
-	 - (add_to_pallet) Needn't check for unset colors
-	* eepic.cc: (print_line) No base layer if narrower than line
-	* pst.cc: (print_line) Adjust base layer width (m_bwidth too large)
-
-2007-09.18 (ADH)
-	Version 1.1.19
-	* affine.cc: Group scaling operators in parentheses
-	* glyph.cc: (map_by) Map offset direction, not length
-
-2007-09.17 (ADH)
-	* format.cc: (print_mark) Use mask color for circ background, add
-	  to pallet if necessary
-	 - Fix label padding
-	 - Draw label border if pen width is positive
-	* markers.cc: (circ) Handle like other markers
-	 - (marker) Handle CIRC like other types
-	* label_style.cc: (seen_through) Needn't check for unset mask
-	* label_style.h: Default label_pad 0
-
-	* picture.cc: Remove mp_format stubs
-
-	* data_bins.cc, data_bins.h: Handle data on cuts
-	 - New data member m_cut_hits
-	 - (d_bin::insert) Rename add_datum
-	 - Copy constructor mis-copied d_bins
-	 - Implement m_bins as a list, not a vector
-
-2007-09.16 (ADH)
-	Version 1.1.18
-	* pair_map.cc, pair_map.h: Rename file, class to affine
-	* epix.h: Add affine.h
-	* screen.cc, screen.h: Pass-through affine operations
-	 - (apply) New member function
-	* screen_data.cc, screen_data.h: Affine operations on contents
-
-	* label_data.cc, label_data.h: Store offset as a pair
-	* axis.cc, markers.cc: (label) Adjust label_data ctor
-	* glyph.cc, glyph.h: Store offset as a pair
-	* glyph.cc: (map_to) Adjust offset, label angle
-	* legend_item.cc: (key) Adjust glyph ctor
-
-2007-09.15 (ADH)
-	* pair_map.cc, pair_map.h: Complete re-write
-	* screen_data.cc: (paste) Use new pair_map ctor
-	
-	* utils.cc, utils.h: (get_chars) New function
-	* path_style.cc: Rename get_breaks -> __epix_get_breakpts
-	 - (extract) Move to utils, rename -> get_chars
-	 - Use get_chars to extract dot/dash pattern
-	 - (__epix_get_breakpts) Check for anomalous patterns
-
-	* screen_data.cc, screen_data.h: (is_cropped) Remove
-	* screen.cc, screen.h: (is_cropped) Remove
-
-2007-09.14 (ADH)
-	* format.cc: (print_color) Check for empty vector of densities
-	* picture_data.cc: (add_to_pallet) Check for unset color
-	
-	* label_style.cc, label_style.h: Dependency cleanup
-	* format.cc, legend.cc, markers.cc, state.cc: Consequent changes
-	* arrow_data.cc, Color_Neutral.cc, glyph.cc, legend.cc,
-	  path_data.h, path.cc, pen_arrow.cc, pen_data.cc, pen_fill.cc
-	  picture.cc, picture_data.cc, plots.cc: Dependency cleanup 
-	
-2007-09.14 (ADH)
-	Version 1.1.17
-	* functions.cc, functions.h: (clip_to_unit) Move to Color_Utils
-	* Color_Utils.cc: #include "Color_Utils.h"
-	* Color_Utils.cc, Color_Utils.h: Move clip_to_unit from functions
-	
-2007-09.13 (ADH)
-	* length.cc, length.h: (operator+, operator*) Pass one arg by value
-
-	* configure.ac, Makefile.am: --with-nolisp option (for Gentoo)
-	 - Make scripts dependent on epix.el (to force build before install)
-
-	* Color_Base.h: print_to(format) -> model, densities
-	 - Color is not a friend class
-	* Color.cc, Color.h: (print_to) Remove function
-	 - (model, densities) New functions
-	* Color_CMY.cc, Color_CMY.h, Color_CMYK.cc, Color_CMYK.h: Same
-	* Color_Gray.cc, Color_Gray.h, Color_RGB.cc, Color_RGB.h: Same
-	* Color_Neutral.cc, Color_Neutral.h, Color_Sep.cc, Color_Sep.h: Same
-
-	* format.cc, format.h: (print_color(string, string, vector<double>)
-	  New function, calls existing print_color functions
-
-	* plane.cc, plane.h: (pt, perp) New member functions
-	 - Intersection operators aren't friends
-	* intersections.cc: Use Plane member functions
-	
-2007-09.12 (ADH)
-	* (Update README et. al.)
-
-2007-09.11 (ADH)
-	Version 1.1.16
-	* picture.cc, picture.h: (end_picture) New function (formerly end)
-	 - (end) Set output format on command-line flags, call end_picture
-
-	* elaps.in, epix.in, flix.in: --pst, --tikz, --eepic options
-
-2007-09.10 (ADH)
-	* facet.cc: (draw) Handle unset pen, reorganize logic
-	
-	* Makefile.am: Install all headers under $(pkgincludedir)
-	 - Remove libepix_a_HDRS from libepix_a_LIBADD deps
-	* make_header: Preserve include guards in epix.h
-	 - Include string
-	 - Don't include cstdio
-	* Color.h, Color_CMY.h, Color_CMYK.h, Color_Gray.h,
-	  Color_Neutral.h, Color_RGB.h, Color_Sep.h, Color_Utils.h:
-	  EPIX2 -> EPIX in include guard symbol
-
-2007-09.09 (ADH)
-	* eepic.cc: (print_circle_marker) Set allinethickness, draw once
-
-	* markers.h: (right_angle, arc_measure) Default size 8pt (was 12)
-
-2007-09.08 (ADH)
-	Version 1.1.15
-	* arrow_style.cc, arrow_style.h, pen_arrow.cc, state.cc, state.h:
-	  camber -> inset
-	* constants.h: ACAMBER -> INSET
-	
-	* label_style.cc, label_style.h: (is_masked) New function
-	* markers.cc: (label) Get mask flag from current label style
-
-	* glyph.cc: (print_to) Don't call print_latex_hbox on label text
-	
-	* screen_data.h: Remove void constructor
-	
-	* pair_map.cc, pair_map.h: const pair args -> const pair&
-
-	* screen_data.cc, screen_data.h: Store mask-indep corners
-	 - (paste) Use corners, not mask, to generate affine_map
-	 - (add_tile(tile*)) clone argument
-	 - (extract, extract_diamond, extract_ellipse) New functions
-
-	* screen.cc: pair2P -> __epix_pair2P, accept const pair&
-	 - (extract, extract_diamond, extract_ellipse) New functions
-
-2007-09.07 (ADH)
-	* format.h: (print_circle_marker) New function
-	* format.cc: (print_latex_marker) Needn't handle dot-like marks
-	  - (print_mark) Use print_circle_marker for dot-like marks
-	  - (print_edge) Use print_circle_marker for path dots
-
-	* eepic.cc, eepic.h: (print_circle_marker) New function
-	* pst.cc, pst.h:     (print_circle_marker) New function
-	* tikz.cc, tikz.h:   (print_circle_marker) New function
-	
-	* tikz.cc: (put_box) truncate coordinates
-
-2007-09.05 (ADH)
-	* format.cc: (print_latex_hbox) "default" -> "rm"
-	 - "normalsize" -> "nsz"
-	* label_style.h: (label_state) Same as above
-	* state.h: (font_size, font_face) Same as above
-
-	* mask_rectangle.h, mask_ellipse.h, mask_diamond.h: Remove void
-	  constructor
-
-	* pen_fill.cc: (print_to, add_to_pallet) No action if is_empty
-
-2007-08.31 (ADH)
-	* epix-lib.sh: Remove unused global EPIX_VERBOSE
-	 - New global LATEX_PKGS
-	 - (ePiX_usepackages) New function (only used by elaps)
-
-	* elaps.in: (elaps_make_latex) Get LaTeX packages from input file
-
-2007-08.30 (ADH)
-	Version 1.1.14
-	* format.h: (usepackages) New function
-	* format.c (file_comments) Call usepackages
-
-	* eepic.cc, eepic.h: (usepackages)
-	* pts.cc, pst.h: (usepackages)
-	* tikz.cc, tikz.h: (usepackages)
-	* fmt_template.cc, fmt_template.h: (usepackages)
-
-2007-08.30 (ADH)
-	Version 1.1.13
-	* epix.el.in: New file
-	* epix.el: Obsolete file removed
-
-2007-08.29 (ADH)
-	* hatching.cc, hatching.h: Reimplement
-
-2007-08.25 (ADH)
-	* format.cc, format.h: (path_break) Default implementation
-	 - (path_conector) New virtual function, default implementation
-	 - (print_edge, print_paths) Use path_connector
-	 - (xdefinecolor) Non-virtual functions for xcolor formats
-
-	* tikz.cc, tikz.h: New files
-
-	* eepic.cc: (print_color) Use xdefinecolor
-	* eepic.cc, eepic.h: (path_break) Use default implementation
-	* pst.cc, pst.h: (path_break) Use default implementation
-
-	* picture.cc, picture.h: (mp_format, print_mp) Comment out
-	 - pgf_format -> tikz_format
-	 - print_pgf -> print_tikz
-
-2007-08.23 (ADH)
-	* clipping.cc, clipping.h: New face list m_extras
-	 - (clip_face, clip_slice, clip_restore) New functions
-	* state.cc, state.h: (clip_face, clip_slice, clip_restore) New
-	  functions
-	 - (label_border) Accept double for length arg
-
-	* legend.cc: (draw) Position is not camera-dependent
-
-	* picture.cc, picture.h: (border) Accept double for length arg
-	* screen.cc, screen.h: (border) Accept double for length arg
-
-2007-08.21 (ADH)
-	Version 1.1.12
-	* axis.cc: log labels in decimal by default, sci available
-	
-2007-08.20 (ADH)
-	* axis.cc, axis.h: (unmark(double)) New member function
-	
-2007-08.19 (ADH)
-	* label_data.cc: (label_data(P, mark, align): Axis tick markers
-	  restrictively aligned, cannot be rotated
-
-	* legend_tile.cc, legend_tile.h: Copy ctor/assign, destructor
-
-	* lens.cc, lens.h: New files
-	 - Add clone function
-	* camera.cc, camera.h: Factor out Lens code
-	 - Add copy ctor/assign
-
-	* picture.cc, picture.h: (pic_units_per_pt, units_per_pic_unit,
-	  pt_to_screen) New functions for true-size drawing
-	 - Remove svg functions
-
-	* markers.cc, markers.h: (right_angle, arc_measure, axis_break,
-	  h_error_bar, v_error_bar) New functions
-
-	
-2007-08.18 (ADH)
-	Version 1.1.11
-	* screen_data.cc, screen_data.h: (print_to) Accept bool flag to
-	  encapsulate in a picture-like environment
-
-	* format.h: (reset_state) New pure virtual function
-	* eepic.cc, eepic.h, pst.cc, pst.h: (reset_state) New function
-
-2007-08.17 (ADH)
-	* format.cc, format.h: (start_picture, end_picture, print_pallet,
-	  print_latex_hbox, set_unitlength) New functions
-	 - (pic_header, pic_footer) Implemented in lower-level functions
-	* glyph.cc: (print_to) Font attributes handled in format.
-
-	* legend_item.cc, legend_item.h: New files
-	* legend_tile.cc, legend_tile.h: New files
-
-2007-08.16 (ADH)
-	* format.cc, format.h: (print_latex_label) Masking flag
-	 - (print_latex_label) Always print text color
-
-	* legend.cc, legend.h: New files
-
-	* length.cc, length.h: (name) New member function
-
-2007-08.15 (ADH)
-	* fmt_template.cc, fmt_template.h: New files
-
-	* active_screen.cc, active_screen.h: screen_broker class replaces
-	  global screen pointer active_screen
-
-	* picture.cc, picture.h: (inlay, inlay_vertical, inlay_horizontal)
-	  New functions
-	 - (deactivate) New function
-	 - (activate) Re-implement using screen_broker
-
-	* arrow_data.cc, axis.cc, curves.cc, label_data.cc, path.cc,
-	  path_data.cc, state.cc: Use active_screen()
-
-2007-08.12 (ADH)
-	* curves.cc: grid calls rect for outmost lines (enables filling)
-
-	* format.h: Re-design interface
-	* eepic.cc, eepic.h, pst.cc, pst.h: Re-implement
-	
-	* glyph.cc, pen_fill.cc, pen_line.cc: Re-implement print_to
-	* pen_arrow.cc: Generate own arrow head data
-	* picture_data.cc: Reimplement print_to
-	* pen_fill.h: Remove hatch angle members
-
-2007-08.09 (ADH)
-	Version 1.1.10
-	* mask_diamond.cc, mask_ellipse.cc, mask_rectangle.cc: (backing)
-	  Use plain backing color for edge
-
-	* domain.cc: (resize1, resize2, resize3) Hack to avoid round-down
-
-2007-08.08 (ADH)
-	* curves.cc, curves.h: (line) Make num_pts argument unsigned
-	* curves.cc: (line, triangle, quad, arrow) Sensitive to whether
-	  camera preserves lines
-
-	* constants.h: New constants MAX_LOG_BASE, DEF_PRECISION, MAX_PRECISION
-
-2007-08.07 (ADH)
-	* frac.cc, frac.h: New files (rational number class)
-	
-	* pen_arrow.cc: (print_to) Use copy of label_state to print a dot
-
-	* label_data.cc, label_data.h: (mask_color, text_color, align_to)
-	  New pass-through functions
-	* markers.cc, markers.h: Label commands use label_data
-	  pass-through
-	 - Move axis and axis label functions to new file axis.cc
-	* axis.cc, axis.h: New files (Coordinate axes, global functions)
-	 - New log label commands with same signature as Cartesian versions
-	 - New axes along sides of bounding box
-	
-	* eepic.cc, pst.cc: (pic_header, pic_footer, print_color) Print
-	  "%" at end of line
-
-2007-08.06 (ADH)
-	* state_data.h: Remove file
-	* state.cc: Include style headers explicitly
-
-	* pst.cc: (pic_footer, pic_header) Don't use pspicture* when cropping
-
-2007-08.04 (ADH)
-	* epix-lib.sh (ePiX_usage, ePiX_version): Update copyright,
-	  licence notices
-	 - Get script name from caller
-	 - (ePiX_bugreport) New function
-	* elaps.in, epix.in, flix.in, laps.in: Specify script name for
-	  usage, version
-	 - Call ePiX_bugreport at end of help
-
-	* triples.cc, triples.h: (Several binary operators) Pass first
-	  argument as value when implementation must copy anyway
-
-2007-08.03 (ADH)
-	Version 1.1.9
-	* flix.in: (flix_png) Pass tmax to bc, don't let shell evaluate
-
-	* path_data.c: (photo) Print filled only if >= 3 non-null edges
-
-2007-08.02 (ADH)
-	* spline.cc: (data) Indexing errors; increase max indices by 1
-
-	* data_bins.cc: (plot) Use 20 intervals per spline
-	 - (bar_chart, histogram, plot): Check for sero population
-	 - (bar_chart) Bar height = frac of population in bin
-	 - (histogram) Box height = frac of pop per horizontal unit
-	 - (pop) Implement function
-
-	* path_style.cc: (path_state(string)) Fix test for solidity
-
-	* README-changes, README-porting: Removed
-
-2007-08.01 (ADH)
-	* functions.h: Remove "D", "I" aliases for Deriv, Integral
-	* functions.cc: (recip) Return 1.0/x (sec, csc, tan have poles)
-	* functions.cc, functions.h: Remove nine lowercase trig functions
-	* plots.cc: D -> Deriv, I -> Integral
-
-	* triples.h: Remove "triple" alias for P
-	* triples.cc, triples.h: New member function is_valid()
-	 - (midpoint) Remove function
-	* circle.cc: Replace P::midpoint
-
-	* elaps.in: Keep eepic file, back up existing file if any
-	 - Unset EPIX_OUTFILE, EPIX_OUTROOT on loop exit
-	 - Print informative (but fake) lines on latex/dvips failure
-
-	* curves.cc, curves.h: (spline(vector<P>, int)) New function
-	* data_bins.cc: (plot) Draw piecewise-cubic spline, not n_spline
-
-2007-07.31 (ADH)
-	* crop_algorithms.h: (loopify)
-	 - Increment twice after insertion
-	 - Erase lone edge correctly
-
-	* markers.cc, markers.h: (h_axis_tick, v_axis_tick) Alignment option
-	 - (h_axis, h_log_axis, v_axis, v_log_axis) Alignment option
-	* label_data.cc, label_data.h: (label_data(P, mark_type)) Accepts
-	  alignment option
-	* eepic.cc: (print_mark) Handle alignment
-	* pst.cc: (print_mark) Handle alignment
-	 - (print_edges) Use pspolygon for closed paths
-
-	* path_data.cc, path_data.h: New constructor from list of edge3d
-	 - (is_closed, is_filled) Move body to source file
-	 - vector<P>, list<edge3d> constructors do not fill unless closed
-	* plot_algorithms.h: (plot_map_dom, euler_plot) Build plots from
-	  edges, not vertices
-	 - (plot_map_dom) Don't close or fill surface/solid plots
-
-2007-07.30 (ADH)
-	* circle.cc, circle.h, plane.cc, plane.h, segment.cc, segment.h,
-	  sphere.cc, sphere.h:
-	 - Remove intersection member operators
-	 - Add bool malformed member, constructor for malformed objects
-	 - Intersection operators do not throw
-	* intersections.cc, intersections.h: New files, handle
-	  intersections of object classes
-	* make_header: Add intersections.h
-
-2007-07.29 (ADH)
-	* errors.h: Remove error type enums
-	
-	* data_file.cc: (write(fmt)) Column indices reversed in try block
-	
-	* curves.cc: (ellipse_left, ellipse_right) Correct angle bounds
-	* path.cc: Ellipse constructor creates path containing specified
-	  number of edges
-
-	* markers.cc: marker(P, circ) calls circ
-	 - masked log axis labels
-	 - log axis labels accept optional base argument
-	
-	* eepic.cc, pst.cc: BOX and DOT, BBOX and DDOT of the same size
-	 - Label padding works more similarly to PSTricks
-	* pst.cc: (print(label_state, string)) If no label border, set
-	  linestyle=none
-	* glyph.cc: (print_to) Handle font face
-
-	* constants.h: AVG_DOT=4 (was 2), AVG_TICK=3 (was 2)
-	 - Arrow head parameter bounds (MIN_AWIDTH, MIN_ARATIO, etc.)
-	* arrow_style.cc, arrowhead_style.h:
-	 - Handle bounds on arrow head dimensions
-	 - (width, ratio, camber, fill) Return arrowhead_state& (not void)
-	
-	* state.cc: (dash_size) Pass unchecked argument to path_state
-	 - (dot_size, tick_size) Pass unchecked argument to marker_state
-	* marker_style.cc: (dot_size, tick_size)
-	 - Handle unchecked arg
-	 - Return marker_style& (not void)
-	* path_style.cc: (dash_size) Handle unchecked arg
-
-2007-07.28 (ADH)
-	Version 1.1.8
-	* eepic.cc: (print(label_state, string)): Fix masklabel padding
-	* markers.cc: Don't pad axis labels with \phantom{-}
-	* camera.cc: No warning if point is behind film plane
-	* screen_data.cc: backing(), border() activate cropping
-	* data_file.cc: (read) Don't try to read empty files
-	 - (column) Check for empty m_data
-
-2007-07.22 (ADH)
-	* data_mask.cc: (reverse) return *this
-	* length.cc: (get_lengths) Initialize len1, len2
-	* crop_algorithms.h: (loopify) If only one edge is visible, return
-	  empty edge list.
-
-2007-07.19 (ADH)
-	* edge_data.h: Rename seen() -> is_seen(), null() -> is_null()
-	* crop_algorithms.h, pen_fill.cc, pen_line.cc: seen() -> is_seen()
-	* pen_arrow.cc, pen_arrow.h: Remove member m_at_base (unused)
-	 - (crop_to) Shaft visibility bug
-	 - (print_to) Draw ddot if head, tail project to same location
-	* arrow_data.cc, arrow_data.h: Remove member m_at_base (unused)
-	 - Remove clip() function (constructor applies automatically)
-	 - seen() -> is_seen()
-	* format.h, eepic.h, pst.h: (print_arrow) Omit alignment argument
-	* eepic.cc, pst.cc: (print_arrow) Change signature, reimplement
-	 - seen() -> is_seen()
-	* constants.h: Names in all caps
-	 - New constants MIN_CLIP, TWO_PI
-	 - BBOLD_WIDTH is 1.2pt (was 1.6pt)
-	* angle_units.cc, hatching.cc, marker_style.cc, path_style.cc,
-	  state.cc: Use capitalized constants
-	* camera.cc, camera.h: Use MIN_CLIP
-	 - Rename function to_front() -> clip_plane()
-
-2007-07.17 (ADH)
-	* crop_algorithms.h: New file for path-chopping templates
-	* halfspace.cc, halfspace.h: Remove private member functions
-	 - Use crop_algorithms.h
-	* screen_crop.cc, screen_crop.h: New files for crop_path_2nd,
-	  crop_loop_2nd (from edge_data.cc)
-	* edge_data.h: Move crop_path_2nd, crop_loop_2nd to screen_crop.cc
-	  (file contains only template class and two typedefs)
-	* edge_data.cc: Remove file
-
-2007-07.16 (ADH)
-	* state.cc: (fill(true)) Set fill color to White() if unset
-	* halfspace.cc, halfspace.h: (clip_path) Out-of-order bug
-	 - Move constructor body from header.
-
-2007-07.14 (ADH)
-	Version 1.1.7
-	* eepic.cc, eepic.h, pst.cc, pst.h: Implement path styles
-	 - (print_edge, print_edges) New functions
-	 - (print_line) Implement in terms of print_edge
-	 - (print_verbatim): New function
-	* verbatim.cc, verbatim.h: New files, implementing tile class for
-	  verbatim output to file
-	* picture.cc, picture.h: (write, pre_write, post_write) New
-	  functions to write verbatim strings to output
-	* screen.h: Declare global "write" function a friend
-	* picture_data.cc, picture_data.h: Add support for pre- and
-	  post-written strings in output
-	* constants.h: Default axis ticks 4pt long
-
-2007-07.13 (ADH)
-	* path_style.cc, path_style.h: Interface redesign
-	 - String-parsing implementation
-	 - Use constants.h
-	* marker_style.cc: Use constants.h
-	* state.cc: Reimplement path style functions
-	 - Use constants.h
-	 - (dash_size) New function
-	 - (dash_fill, dash_length) Functions removed
-	 - (pen(Color, double), base(Color, double)) New functions
-	* label_data.cc: Constructors set tick mark color to line color
-	* edge_data.h: (length) New member function
-
-2007-07.08 (ADH)
-	* markers.cc: (h_axis, h_axis_labels, v_axis, v_axis_labels) If no
-	  endpoints are specified, use dimensions of active screen
-	* curves.cc: (grid, log_grid) If corners not specified, use
-	  corners of active screen
-	* pst.cc: (print_arrow) Draw head manually
-	  (print_line) Use PSTricks border attribute in two-pen versions
-	  (update_base) Bug fixes
-	* facet.cc, facet.h: New files
-	* surface.cc: Factor out utility classes facet, by_distance
-	 - Support domain-dependent coloring
-	* path_data.cc: (photo) Print unfilled paths in chunks of 250
-	  points to ameliorate LaTeX overflow
-
-2007-07.07 (ADH)
-	Version 1.1.6
-	* surface.cc, surface.h: Support position-dependent coloring
-
-2007-07.06 (ADH)
-	* eepic.cc, pst.cc: (print(style, string)) Fix alignment bug
-	  (print_mark) No padding, border
-	* screen.cc, screen.h, screen_data.cc, screen_data.h: (is_cropped)
-	  New function to add support for label cropping
-	* format.h, eepic.cc, eepic.h: Change signature of pic_header
-	* pst.cc, pst.h: Add support for label cropping
-	* picture_data.cc: (print_to) Pass crop flag
-
-2007-07.05 (ADH)
-	* markers.h: (h_axis_log_labels, v_axis_log_labels) Align argument
-	  defaults to none
-	* picture.cc, picture.h: (eepic, pst) New functions to set output
-	  format. (mp, pgf, svg stubs written.)
-	* camera.cc: (to_front) Min clip distance is 0.01
-	* path_data.cc: (photo) Clip by camera.to_front()
-
-2007-07.04 (ADH)
-	* pst.cc, pst.h: New files
-	* eepic.cc: Implement label borders and padding
-	* state.cc, state.h: (new functions)
-	 - plain(Color), bold(Color), bbold(Color), set line Color/width
-	 - rgb(P), cmyk(P), use components as densities
-	 - New functions to set label attributes
-	   . label_color(Color);
-	   . label_pad(string);
-	   . label_border(Color, [string]), label_border(string);
-	   . no_label_border();
-	* curves.cc, curves.h: (draw_rect, swatch, rect(P, P, bool),
-	  draw_polar_grid) Remove functions
-	* domain.cc, domain.h:
-	 - No default domain constructor
-	 - New constructor domain(P, P, mesh)
-	 - Inline 1-dim'l constructor moved to cc file
-	 - domain data members made private
-	   New functions corner1_x1(), coarse_n1(), etc.
-	 - "Net" typename removed
-	* plot_algorithms.h, plots.cc, surface.cc: Use domain state
-	  functions
-	* data_bins.cc, data_bins.h: (bar_chart) New function
-	* data_file.cc, data_file.h: New global functions
-	 - plot(filename, mark_type, col1, col2, col3, [F])
-	   plot(filename, mark_type, F, col1, col2, col3)
-	 - histogram, bar_chart
-
-2007-07.03 (ADH)
-	* dataplot.cc, dataplot.h: Break up and remove files
-	* data_bins.cc, data_bins.h, data_file.cc, data_file.h,
-	  data_mask.cc, data_mask.h, interval.cc, interval.h: New files
-	* samples: Remove sample document
-	* doc: Update
-
-2007-06.28 (ADH)
-	* circle,cc, circle.h:
-	 - Rename class -> Circle
-	 - Remove m_filled data member, fill operator
-	 - Remove translation, scaling operators += and *=
-	 - (translate) Rename "shift"
-	 - (move_to) New function
-	 - Circle::draw() fills according to current paint style
-	 - (circle) New functions which draw automatically
-	* sphere.cc, sphere.h:
-	 - Rename class -> Sphere
-	 - Remove translation, scaling operators += and *=
-	 - (shift, move_to, scale) New functions
-	 - (poles) Remove global function
-	 - (sphere) New functions which draw automatically
-	* plane.cc, plane.h:
-	 - Rename class -> Plane
-	 - (shift, move_to) New functions
-	 - Remove translate, separates, parallel_to, contains, height
-	   functions
-	 - (draw) Reimplement 
-	* segment.cc, segment.h:
-	 - Rename class -> Segment
-	 - (shift, move_to, scale) New functions
-	 - Remove translation operator +=
-	* path.cc, path.h,path_data.cc, path_data.h: Update class names
-	  Circle, Plane, Segment, Sphere
-	* polyhedron.cc, polyhedron.h: Remove files
-
-2007-06.25 (ADH)
-	* contrib: Remove package
-	* surface.cc: (facet) Class contains a normal vector,
-	  (facet::front_facing) Use normal vector to test
-
-2007-06.25 (ADH)
-	* surface.cc: (facet::draw) Use "direction" to compute density
-	* path.cc: (ellipse constructor) Don't close/fill automatically
-	* curves.cc: (ellipse) Close/fill if appropriate
-	* format.h, eepic.cc, eepic.h: (file_comment) New function
-	* picture_data.cc, picture_data.h: (file_header) Move to format.h
-	* path_data.cc, path_data.h: (draw) Implement base pen,
-	   draw filled regions with both pens
-	* state.cc, state.h: Functions to control drawing state
-	 - pen(Color, [string]), base(Color, [string])
-	 - fill(Color)
-	* doc/manual.tex: Update
-
-2007-06.20 (ADH)
-	Version 1.1.5
-	* pen_arrow.cc, pen_arrow.h: Store shaft as edge, not as two pairs
-	* format.h, eepic.cc, eepic.h: (print_arrow) Adjust call syntax
-	* mask_diamond.cc, mask_ellipse.cc: (crop_to) Fix crop criterion
-	* geometry.cc, geometry.h: Re-implement spherical geometry
-	* sphere.cc, sphere.h: (latitude, longitude) Move to geometry.*
-	* functions.cc, functions.h
-	 - Remove templates for id, zero, proj1, proj2, min, max
-	   (put id, proj1, proj2 in map.h)
-	 - Implement "zero" function with four call signatures
-	* plots.cc: (shadeplot) Path closure bug
-	* path.cc: (ellipse constructors) Close and fill if appropriate
-	* markers.cc: (arrow) Re-implement labeled arrow
-	* label_data.cc, label_data.h: Add visibility flag
-	* glyph.cc: (print_to) Implement font_size
-	* edge_data.cc: (crop_path_2nd) Loop processing bug
-
-2007-06.19 (ADH)
-	Version 1.1.4
-
-	Clipping and cropping work. Elliptical and diamond-shaped screen
-	masks are implemented.
-
-2007-06.03 (ADH)
-	Version 1.1.3, first public release
-
-	Implements ePiX-2's color capabilities, including named models
-	(RGB, CMY, CMYK, and Gray), color blending, filtering, CMYK
-	separation, limited transparency, color filling and colorable
-	arrows in eepic, decorable screens, and page markup.
-
-	The global parameters x_min, etc., should be replaced with
-	function calls, e.g. xmin(), from now on. Aside from this, the
-	syntax is backward compatible with Version 1.0.x.
diff --git a/graphics/epix/Color.cc b/graphics/epix/Color.cc
deleted file mode 100644
index 1b4d01b717..0000000000
--- a/graphics/epix/Color.cc
+++ /dev/null
@@ -1,369 +0,0 @@
-/*
- * Color.cc -- ePiX Color functions
- *
- * This file is part of ePiX, a C++ library for creating high-quality
- * figures in LaTeX
- *
- * Version 1.1.17
- *
- * Last Change: September 13, 2007
- */
-
-/*
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- *
- */
- 
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include <sstream>
-#include <string>
-#include <vector>
-
-#include <cmath>
-
-#include "functions.h"
-
-#include "Color_Base.h"
-#include "Color_Utils.h"
-
-#include "Color_CMY.h"
-#include "Color_CMYK.h"
-#include "Color_Gray.h"
-#include "Color_Neutral.h"
-#include "Color_RGB.h"
-#include "Color_Sep.h"
-
-#include "Color.h"
-
-namespace ePiX {
-
-  Color::Color() 
-    : m_color(Neutral().m_color), m_alpha(1) { }
-
-  Color::Color(const Color_Base& col)
-    : m_color(col.clone()), m_alpha(1) { }
-
-  Color::Color(const Color_Base* col)
-    : m_color(col->clone()), m_alpha(1) { }
-
-
-  Color::Color(const Color& col)
-    : m_color(col.m_color->clone()), m_alpha(col.m_alpha) { }
-
-
-  Color& Color::operator= (const Color& col)
-  {
-    if (*this != col)
-      {
-	Color_Base* tmp(col.m_color->clone());
-	delete m_color;
-
-	m_color = tmp;
-	m_alpha = col.m_alpha;
-      }
-
-    return *this;
-  }
-
-  Color::~Color()
-  {
-    delete m_color;
-  }
-
-  const Color_Base* Color::operator->() const
-  {
-    return m_color;
-  }
-
-  double Color::alpha() const
-  {
-    return m_alpha;
-  }
-
-
-  bool Color::operator== (const Color& col) const
-  {
-    return m_color->name() == col.m_color->name();
-  }
-
-  bool Color::operator< (const Color& col) const
-  {
-    // N.B. add_colors_to() must check for Unset
-    return m_color->name() < col.m_color->name(); 
-  }
-
-  bool Color::is_unset() const
-  {
-    // we're Neutral()
-    return (name() == "");
-  }
-
-
-  // no effect if we or col are Neutral
-  Color Color::filter(const Color& col) const
-  {
-    if (m_color->name() == "" || col.is_unset())
-      return col;
-
-    else
-      {
-	Color_Base* fil(m_color->clone());
-	fil->filter(*(col.m_color));
-
-	Color val(fil);
-	delete fil;
-	return val;
-      }
-  }
-
-  Color& Color::operator*= (double c)
-  {
-    (*m_color) *= c;
-
-    return *this;
-  }
-
-  // Blending with Unset has no effect
-  Color& Color::blend(const Color& col, double d)
-  {
-    if (!col.is_unset())
-      m_color->blend(*(col.m_color), d);
-
-    return *this;
-  }
-
-  Color& Color::superpose(const Color& col)
-  {
-    if (!col.is_unset())
-      m_color->superpose(*(col.m_color));
-
-    return *this;
-  }
-
-  Color& Color::invert()
-  {
-    m_color->invert();
-
-    return *this;
-  }
-
-  Color& Color::alpha(double t)
-  {
-    m_alpha = t;
-    return *this;
-  }
-
-
-  std::string Color::model() const
-  {
-    return m_color->model();
-  }
-
-  std::string Color::name() const
-  {
-    return m_color->name();
-  }
-
-  std::vector<double> Color::densities() const
-  {
-    return m_color->densities();
-  }
-
-
-  // Named constructors
-  Color RGB(double r, double g, double b)
-  {
-    return Color(RGB_Color(r, g, b));
-  }
-
-  Color CMY(double c, double m, double y)
-  {
-    return Color(CMY_Color(c, m, y));
-  }
-
-  Color CMYK(double c, double m, double y, double k)
-  {
-    return Color(CMYK_Color(c, m, y, k));
-  }
-
-  Color Gray(double d)
-  {
-    return Color(Gray_Color(d));
-  }
-
-
-  // Scale operator
-  Color operator* (double c, const Color& col)
-  {
-    Color tmp(col);
-    return tmp *= c;
-  }
-
-
-  /* * * Extended primaries in the global namespace * * */
-  Color Red(double d)
-  {
-    return RGB(clippy(d), clippy(-d), clippy(-d));
-  }
-
-  Color Green(double d)
-  {
-    return RGB(clippy(-d), clippy(d), clippy(-d));
-  }
-
-  Color Blue(double d)
-  {
-    return RGB(clippy(-d), clippy(-d), clippy(d));
-  }
-
-  Color White(double d)   
-  {
-    return RGB(clippy(d), clippy(d), clippy(d)); 
-  }
-
-  Color Black(double d)
-  { 
-    return RGB(clippy(1-d), clippy(1-d), clippy(1-d));
-  }
-
-
-  /* * * CMY * * */
-  Color Cyan(double d)
-  { 
-    return CMY_Color(clippy(d), clippy(-d), clippy(-d), true);
-  }
-
-  Color Magenta(double d)
-  { 
-    return CMY_Color(clippy(-d), clippy(d), clippy(-d), true);
-  }
-
-  Color Yellow(double d)
-  { 
-    return CMY_Color(clippy(-d), clippy(-d), clippy(d), true);
-  }
-
-  Color CMY_White(double d)
-  {
-    return CMY_Color(clippy(1-d), clippy(1-d), clippy(1-d), true);
-  }
-
-  Color CMY_Black(double d)
-  {
-    return CMY_Color(clippy(d), clippy(d), clippy(d), true);
-  }
-
-
-  /* * * CMYK * * */
-  Color CyanK(double d)
-  {
-    double c(clippy(d));
-    double m(clippy(-d));
-    double y(m);        // [sic]
-    double k(min(c,m)); // y=m
-
-    return CMYK_Color(c-k, m-k, y-k, k, true);
-  }
-
-  Color MagentaK(double d)
-  { 
-    double c(clippy(-d));
-    double m(clippy(d));
-    double y(c);
-    double k(min(c,m)); // y=c
-
-    return CMYK_Color(c-k, m-k, y-k, k, true);
-  }
-
-  Color YellowK(double d)
-  { 
-    double c(clippy(-d));
-    double m(c);
-    double y(clippy(d));
-    double k(min(c,y)); // m=c
-
-    return CMYK_Color(c-k, m-k, y-k, k, true);
-  }
-
-  Color CMYK_White(double d)   
-  {
-    return CMYK_Color(0, 0, 0, clippy(1-d), true);
-  }
-
-  Color CMYK_Black(double d)
-  {
-    return CMYK_Color(0, 0, 0, clippy(d), true);
-  }
-
-
-  Color C_Process(double d)
-  {
-    return Cyan_Layer(d);
-  }
-
-  Color M_Process(double d)
-  {
-    return Magenta_Layer(d);
-  }
-
-  Color Y_Process(double d)
-  {
-    return Yellow_Layer(d);
-  }
-
-  Color K_Process(double d)
-  {
-    return Black_Layer(d);
-  }
-
-
-  /* * * Neutral filters * * */
-  Color Neutral()
-  {
-    static Neutral_Color* neutral(new Neutral_Color());
-    return Color(*neutral);
-  }
-
-  Color RGB_Neutral()
-  {
-    static RGB_Color* rgb_neutral(new RGB_Color(1, 1, 1));
-    return Color(*rgb_neutral);
-  }
-
-  Color CMY_Neutral()
-  {
-    static CMY_Color* cmy_neutral(new CMY_Color(0, 0, 0, true));
-    return Color(*cmy_neutral);
-  }
-
-  Color CMYK_Neutral()
-  {
-    static CMYK_Color* cmyk_neutral(new CMYK_Color(0, 0, 0, 0, true));
-    return Color(*cmyk_neutral);
-  }
-
-  Color Gray_Neutral()
-  {
-    static Gray_Color* gray_neutral(new Gray_Color(1));
-    return Color(*gray_neutral);
-  }
-} // end of namespace
diff --git a/graphics/epix/Color.h b/graphics/epix/Color.h
deleted file mode 100644
index fc2db6127e..0000000000
--- a/graphics/epix/Color.h
+++ /dev/null
@@ -1,156 +0,0 @@
-/*
- * Color.h -- ePiX::Color class and helpers
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.17
- * Last Change: September 13, 2007
- *
- * 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- *
- *
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-/*
- * This file defines the ePiX Color user interface:
- *       operator*=           Modify intensity
- *       blend(Color, double) Color mixing
- *       filter(Color)        Apply us as a filter
- *       superpose(Color)     Add colors, clip intensities
- *       invert()             Color negative
- *
- *   - Named primary constructors
- *
- * Scaling and filtering are implemented by converting to the filter's
- * color model. Color model conversions come from the LaTeX xcolor
- * package documentation, V 1.11 (2044/05/09) by Uwe Kern.
- */
-
-#ifndef EPIX_COLOR
-#define EPIX_COLOR
-
-#include <string>
-#include <vector>
-
-namespace ePiX {
-
-  class Color_Base;
-
-  class Color {
-  public:
-    Color();
-    Color(const Color_Base*);
-    Color(const Color_Base&);
-    Color(const Color&);
-
-    Color& operator= (const Color&);
-
-    ~Color();
-
-    const Color_Base* operator->() const;
-    double alpha() const;
-
-    bool operator== (const Color&) const;
-    bool operator< (const Color&) const; // needed for Screen::pallet
-    bool operator!= (const Color& col) const { return !((*this) == col); }
-    bool is_unset() const;
-
-    Color filter(const Color&) const;
-
-    Color& operator*= (double c);     // scale the intensity
-    Color& blend(const Color&, double);
-    Color& superpose(const Color&);
-    Color& invert();
-    Color& alpha(double);
-
-    std::string model() const;
-    std::string name() const;
-    std::vector<double> densities() const;
-
-  private:
-    Color_Base* m_color;
-    double m_alpha;
-
-  }; // end of class Color
-
-  Color operator* (double, const Color&);
-
-
-  /*
-   * * *  Primary color functions in the global namespace * * *
-   *
-   * A primary color constructor accepts a numerical argument, which is
-   * reduced mod 4, then interpreted as a color density as follows:
-   * d = -2 or 2 : white
-   * d = -1: full anti-saturation
-   * d =  0: black
-   * d =  1: full saturation (default)
-   *
-   * The primary changes continuously, and linearly on each interval
-   * [-2,-1], [-1,0], [0,1], and [1,2].
-   *
-   * Example:
-   * Red(0.3) = rgb(0.3, 0, 0) = Red(-3.7)
-   * Red(1.3) = rgb(1,0.3,0.3) = Red(-2.7)
-   * Red(2.3) = rgb(0.7, 1, 1) = Red(-1.7)
-   * Red(3.3) = rgb(0,0.7,0.7) = Red(-0.7)
-   */
-  Color RGB(double r=0, double g=0, double b=0);
-  Color CMY(double c=1, double m=1, double y=1);
-  Color CMYK(double c=1, double m=1, double y=1,
-	     double k=0); // void same as CMYK(0,0,0,1);
-  Color Gray(double d=0);
-
-  Color Red(double d=1);
-  Color Green(double d=1);
-  Color Blue(double d=1);
-  Color White(double d=1);
-  Color Black(double d=1);
-
-  Color Cyan(double d=1);
-  Color Magenta(double d=1);
-  Color Yellow(double d=1);
-  Color CMY_White(double d=1);
-  Color CMY_Black(double d=1);
-
-  Color CyanK(double d=1);
-  Color MagentaK(double d=1);
-  Color YellowK(double d=1);
-  Color CMYK_White(double d=1);
-  Color CMYK_Black(double d=1);
-
-  // color separation
-  Color C_Process(double d=1);
-  Color M_Process(double d=1);
-  Color Y_Process(double d=1);
-  Color K_Process(double d=1);
-
-  // "conversion filters"
-  Color Neutral();
-  Color RGB_Neutral();
-  Color CMY_Neutral();
-  Color CMYK_Neutral();
-  Color Gray_Neutral();
-
-} // end of namespace
-
-#endif /* EPIX_COLOR */
diff --git a/graphics/epix/Color_Base.cc b/graphics/epix/Color_Base.cc
deleted file mode 100644
index 74fdf5c7a8..0000000000
--- a/graphics/epix/Color_Base.cc
+++ /dev/null
@@ -1,52 +0,0 @@
-/*
- * Color_Base.cc -- ePiX Color_Base functions
- *
- * This file is part of ePiX, a C++ library for creating high-quality
- * figures in LaTeX
- *
- * Version 1.1.3
- *
- * Last Change: June 03, 2007
- */
-
-/*
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- *
- */
- 
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#include "Color_Utils.h"
-#include "Color_Base.h"
-
-namespace ePiX {
-
-  Color_Base::RGB_Densities::RGB_Densities(double r,
-					   double g,
-					   double b)
-    : m_dens_red  (make_r(r, g, b)),
-      m_dens_green(make_g(r, g, b)),
-      m_dens_blue (make_b(r, g, b)) { }
-
-  bool Color_Base::operator== (const Color_Base& col) const
-  {
-    return (name() == col.name());
-  }
-} // end of namespace
diff --git a/graphics/epix/Color_Base.h b/graphics/epix/Color_Base.h
deleted file mode 100644
index 7c369f33ba..0000000000
--- a/graphics/epix/Color_Base.h
+++ /dev/null
@@ -1,84 +0,0 @@
-/*
- * Color_Base.h -- ePiX::Color interface
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.17
- * Last Change: September 13, 2007
- *
- * 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- *
- *
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#ifndef EPIX_COLOR_BASE
-#define EPIX_COLOR_BASE
-
-#include <string>
-#include <vector>
-
-namespace ePiX {
-
-  class Color_Base {
-
-  protected:
-    struct RGB_Densities
-    {
-      // ensures densities are in [0,1]
-      RGB_Densities (double r, double g, double b);
-
-      double m_dens_red, m_dens_green, m_dens_blue;
-    };
-
-  public:
-    virtual ~Color_Base() { }
-    virtual Color_Base* clone() const = 0;
-
-    // blending (all non-const)
-    // apply us as filter
-    virtual Color_Base& filter(const Color_Base&) = 0;
-
-    // scale intensities
-    virtual Color_Base& operator*= (double) = 0;
-
-    // clip d to [0,1], then return (1-d)*this + d*col
-    virtual Color_Base& blend(const Color_Base&, double) = 0;
-
-    // add channels
-    virtual Color_Base& superpose(const Color_Base&) = 0;
-
-    // return negative color
-    virtual Color_Base& invert() = 0;
-
-    // internal colorname and densities
-    virtual std::string model() const = 0;
-    virtual std::string name() const = 0;
-    virtual std::vector<double> densities() const = 0;
-
-    bool operator== (const Color_Base& col) const;
-    virtual RGB_Densities to_rgb() const = 0;
-
-  }; // end of class Color_Base
-
-} // end of namespace
-
-#endif /* EPIX_COLOR_BASE */
diff --git a/graphics/epix/Color_CMY.cc b/graphics/epix/Color_CMY.cc
deleted file mode 100644
index 085823acc2..0000000000
--- a/graphics/epix/Color_CMY.cc
+++ /dev/null
@@ -1,160 +0,0 @@
-/*
- * Color_CMY.cc -- ePiX::CMY_Color functions
- *
- * This file is part of ePiX, a C++ library for creating high-quality
- * figures in LaTeX
- *
- * Version 1.1.17
- *
- * Last Change: September 13, 2007
- *
- *
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- *
- *
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include <sstream>
-#include <string>
-#include <vector>
-
-#include <cmath>
-
-#include "functions.h"
-
-#include "Color_Utils.h"
-#include "Color.h"
-#include "Color_CMY.h"
-
-namespace ePiX {
-
-  CMY_Color::CMY_Color(double c, double m, double y)
-    : cyan(make_r(c,m,y)), magenta(make_g(c,m,y)), yellow(make_b(c,m,y)) { }
-
-  // private, no arg checking, bool unused
-  CMY_Color::CMY_Color(double c, double m, double y,
-		       const bool arg)
-    : cyan(c), magenta(m), yellow(y) { }
-
-
-  CMY_Color::CMY_Color(const RGB_Densities& s)
-    : cyan(1-s.m_dens_red), 
-      magenta(1-s.m_dens_green), 
-      yellow(1-s.m_dens_blue) { }
-
-
-  Color_Base::RGB_Densities CMY_Color::to_rgb() const
-  {
-    // Use conventional formulas since our densities are already in [0,1]
-    return Color_Base::RGB_Densities(1-cyan, 1-magenta, 1-yellow);
-  }
-
-  CMY_Color* CMY_Color::clone() const
-  {
-    return new CMY_Color(*this);
-  }
-
-  CMY_Color& CMY_Color::filter(const Color_Base& color)
-  {
-    Color_Base::RGB_Densities s(color.to_rgb());
-
-    // filter in RGB; 1 - min(1-x, 1-y) = max(x, y)
-    cyan    = max(cyan,    1-s.m_dens_red);
-    magenta = max(magenta, 1-s.m_dens_green);
-    yellow  = max(yellow,  1-s.m_dens_blue);
-
-    return *this;
-  }
-
-  CMY_Color& CMY_Color::operator*= (double sc)
-  {
-    Color_Base::RGB_Densities s(to_rgb());
-
-    // scale in RGB
-    double r(sc*(s.m_dens_red));
-    double g(sc*(s.m_dens_green));
-    double b(sc*(s.m_dens_blue));
-
-    cyan    = 1 - make_r(r, g, b);
-    magenta = 1 - make_g(r, g, b);
-    yellow  = 1 - make_b(r, g, b);
-
-    return *this;
-  }
-
-  CMY_Color& CMY_Color::blend(const Color_Base& color, double d)
-  {
-    Color_Base::RGB_Densities s(color.to_rgb());
-    double wt(clip_to_unit(d));
-
-    // blending is a convex lin. comb., may as well do in CMY
-    cyan    += wt*(1 -  cyan   - s.m_dens_red);
-    magenta += wt*(1 - magenta - s.m_dens_green);
-    yellow  += wt*(1 - yellow  - s.m_dens_blue);
-
-    return *this;
-  }
-
-  CMY_Color& CMY_Color::superpose(const Color_Base& color)
-  {
-    Color_Base::RGB_Densities s(color.to_rgb());
-
-    // add in RGB
-    cyan    = 1 - clip_to_unit(1 - cyan    + s.m_dens_red);
-    magenta = 1 - clip_to_unit(1 - magenta + s.m_dens_green);
-    yellow  = 1 - clip_to_unit(1 - yellow  + s.m_dens_blue);
-
-    return *this;
-  }
-
-
-  CMY_Color& CMY_Color::invert()
-  {
-    cyan    = 1 - cyan;
-    magenta = 1 - magenta;
-    yellow  = 1 - yellow;
-
-    return *this;
-  }
-
-
-  std::string CMY_Color::model() const
-  {
-    return "cmy";
-  }
-
-  std::string CMY_Color::name() const
-  {
-    std::ostringstream nm;
-
-    nm << "cmy_" << dtohex(cyan) << dtohex(magenta) << dtohex(yellow);
-
-    return nm.str();
-  }
-
-  std::vector<double> CMY_Color::densities() const
-  {
-    std::vector<double> val(3);
-    val.at(0) = rd(cyan);
-    val.at(1) = rd(magenta);
-    val.at(2) = rd(yellow);
-    return val;
-  }
-} // end of namespace
diff --git a/graphics/epix/Color_CMY.h b/graphics/epix/Color_CMY.h
deleted file mode 100644
index 3a8b8ed821..0000000000
--- a/graphics/epix/Color_CMY.h
+++ /dev/null
@@ -1,82 +0,0 @@
-/*
- * Color_CMY.h -- ePiX::CMY_Color class
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.17
- * Last Change: September 13, 2007
- *
- * 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- *
- *
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#ifndef EPIX_COLOR_CMY
-#define EPIX_COLOR_CMY
-#include <string>
-#include <vector>
-
-#include "Color_Base.h"
-#include "Color.h"
-
-namespace ePiX {
-
-  class CMY_Color : public Color_Base {
-  public:
-    explicit CMY_Color(double c=1, double m=1, double y=1);
-    CMY_Color(const RGB_Densities&);
-
-    CMY_Color* clone() const;
-
-    CMY_Color& filter(const Color_Base&);
-
-    CMY_Color& operator*= (double c);
-
-    CMY_Color& blend(const Color_Base&, double);
-    CMY_Color& superpose(const Color_Base&);
-    CMY_Color& invert();
-
-    std::string model() const;
-    std::string name() const;
-    std::vector<double> densities() const;
-
-    RGB_Densities to_rgb() const;
-
-    // These need to call our private constructor
-    friend Color Cyan(double);
-    friend Color Magenta(double);
-    friend Color Yellow(double);
-    friend Color CMY_White(double);
-    friend Color CMY_Black(double);
-    friend Color CMY_Neutral();
-
-  private:
-    double cyan;
-    double magenta;
-    double yellow;
-
-    // Construct a CMY color without checking arguments. Final argument
-    // only changes call signature
-    CMY_Color(double c, double m, double y, const bool);
-  }; // end of class CMY_Color
-
-} // end of namespace
-#endif /* EPIX_COLOR_CMY */
diff --git a/graphics/epix/Color_CMYK.cc b/graphics/epix/Color_CMYK.cc
deleted file mode 100644
index ef730a1998..0000000000
--- a/graphics/epix/Color_CMYK.cc
+++ /dev/null
@@ -1,216 +0,0 @@
-/*
- * Color_CMYK.cc -- ePiX::CMYK_Color functions
- *
- * This file is part of ePiX, a C++ library for creating high-quality
- * figures in LaTeX
- *
- * Version 1.1.17
- *
- * Last Change: September 13, 2007
- *
- *
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- *
- *
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include <sstream>
-#include <string>
-#include <vector>
-
-#include <cmath>
-
-#include "functions.h"
-
-#include "Color_Utils.h"
-#include "Color.h"
-#include "Color_CMYK.h"
-
-namespace ePiX {
-
-  // Behaves "classically" if c+k, m+k, y+k are in [0,1]
-  // Except as noted, CMYK methods enforce/preserve this condition
-  CMYK_Color::CMYK_Color(double c, double m, double y,
-			 double k)
-    : cyan(make_r(c+k, m+k, y+k)),
-      magenta(make_g(c+k, m+k, y+k)),
-      yellow(make_b(c+k, m+k, y+k)),
-      black(min(min(cyan, magenta), yellow))
-  {
-    /* conventional RGB densities
-    double r(1 - min(1, c+k));
-    double g(1 - min(1, m+k));
-    double b(1 - min(1, y+k));
-    */
-    cyan    -= black;
-    magenta -= black;
-    yellow  -= black;
-  }
-
-  // private, no arg checking, bool unused
-  CMYK_Color::CMYK_Color(double c, double m,
-			 double y, double k, const bool arg)
-    : cyan(c), magenta(m), yellow(y), black(k) { }
-
-
-  // black = min(c,m,y), following Uwe Kern's xcolor documentation
-  // V 1.11, 2004/05/09, p. 31
-  CMYK_Color::CMYK_Color(const RGB_Densities& s)
-  {
-    // may assume densities are in [0,1]
-    double c(1-s.m_dens_red), m(1-s.m_dens_green), y(1-s.m_dens_blue);
-
-    black = min(min(c, m), y);
-    cyan    = c-black;
-    magenta = m-black;
-    yellow  = y-black;
-  }
-
-  Color_Base::RGB_Densities CMYK_Color::to_rgb() const
-  {
-    // Use conventional formulas since our densities are already in [0,1];
-    // "min" for safety, should be unnecessary.
-    return Color_Base::RGB_Densities(1 - min(1.0, cyan    + black),
-				     1 - min(1.0, magenta + black),
-				     1 - min(1.0, yellow  + black));
-  }
-
-  CMYK_Color* CMYK_Color::clone() const
-  {
-    return new CMYK_Color(*this);
-  }
-
-  CMYK_Color& CMYK_Color::filter(const Color_Base& color)
-  {
-    Color_Base::RGB_Densities s(color.to_rgb()); // arg
-    Color_Base::RGB_Densities t(to_rgb());       // this
-
-    // filter in RGB
-    double c(1 - min(t.m_dens_red,   s.m_dens_red));
-    double m(1 - min(t.m_dens_green, s.m_dens_green));
-    double y(1 - min(t.m_dens_blue,  s.m_dens_blue));
-    black = min(min(c, m), y);
-
-    cyan    = c-black;
-    magenta = m-black;
-    yellow  = y-black;
-
-    return *this;
-  }
-
-
-  CMYK_Color& CMYK_Color::operator*= (double sc)
-  {
-    Color_Base::RGB_Densities s(to_rgb());
-
-    // scale in RGB
-    double r(sc*(s.m_dens_red));
-    double g(sc*(s.m_dens_green));
-    double b(sc*(s.m_dens_blue));
-
-    // Necessary b/c sc may not be in [0,1]
-    double c(1 - make_r(r, g, b));
-    double m(1 - make_g(r, g, b));
-    double y(1 - make_b(r, g, b));
-
-    black = min(min(c, m), y);
-    cyan    = c-black;
-    magenta = m-black;
-    yellow  = y-black;
-
-    return *this;
-  }
-
-  CMYK_Color& CMYK_Color::blend(const Color_Base& color, double d)
-  {
-    Color_Base::RGB_Densities s(color.to_rgb());
-    double wt(clip_to_unit(d));
-
-    double c((1-wt)*min(1.0, cyan+black)    + wt*(1 - s.m_dens_red));
-    double m((1-wt)*min(1.0, magenta+black) + wt*(1 - s.m_dens_green));
-    double y((1-wt)*min(1.0, yellow+black)  + wt*(1 - s.m_dens_blue));
-
-    black = min(min(c, m), y);
-    cyan    = c-black;
-    magenta = m-black;
-    yellow  = y-black;
-
-    return *this;
-  }
-
-  CMYK_Color& CMYK_Color::superpose(const Color_Base& color)
-  {
-    Color_Base::RGB_Densities s(color.to_rgb());
-    Color_Base::RGB_Densities t(to_rgb());
-
-    // add in RGB
-    double c(1 - clip_to_unit(t.m_dens_red   + s.m_dens_red));
-    double m(1 - clip_to_unit(t.m_dens_green + s.m_dens_green));
-    double y(1 - clip_to_unit(t.m_dens_blue  + s.m_dens_blue));
-
-    black = min(min(c, m), y);
-    cyan    = c-black;
-    magenta = m-black;
-    yellow  = y-black;
-
-    return *this;
-  }
-
-  CMYK_Color& CMYK_Color::invert()
-  {
-    Color_Base::RGB_Densities s(to_rgb());
-
-    // invert in RGB
-    double c(1 - s.m_dens_red);
-    double m(1 - s.m_dens_green);
-    double y(1 - s.m_dens_blue);
-
-    black   = min(min(c, m), y);
-    cyan    = c-black;
-    magenta = m-black;
-    yellow  = y-black;
-
-    return *this;
-  }
-
-  std::string CMYK_Color::model() const
-  {
-    return "cmyk";
-  }
-
-  std::string CMYK_Color::name() const
-  {
-    std::ostringstream nm;
-
-    nm << "cmyk_" << dtohex(cyan) << dtohex(magenta) << dtohex(yellow)
-       << dtohex(black);
-    return nm.str();
-  }
-
-  std::vector<double> CMYK_Color::densities() const
-  {
-    std::vector<double> val(4);
-    val.at(0) = rd(cyan);
-    val.at(1) = rd(magenta);
-    val.at(2) = rd(yellow);
-    val.at(3) = rd(black);
-    return val;
-  }
-} // end of namespace
diff --git a/graphics/epix/Color_CMYK.h b/graphics/epix/Color_CMYK.h
deleted file mode 100644
index 8b99aaa573..0000000000
--- a/graphics/epix/Color_CMYK.h
+++ /dev/null
@@ -1,85 +0,0 @@
-/*
- * Color_CMYK.h -- ePiX::CMYK_Color class
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.17
- * Last Change: September 13, 2007
- *
- * 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- *
- *
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#ifndef EPIX_COLOR_CMYK
-#define EPIX_COLOR_CMYK
-#include <string>
-#include <vector>
-
-#include "Color_Base.h"
-#include "Color.h"
-
-namespace ePiX {
-
-  class CMYK_Color : public Color_Base {
-  public:
-    CMYK_Color(double c=1, double m=1, double y=1,
-	       double k=1);
-    CMYK_Color(const RGB_Densities&);
-
-    CMYK_Color* clone() const;
-
-    CMYK_Color& filter(const Color_Base&);
-
-    CMYK_Color& operator*= (double c);
-
-    CMYK_Color& blend(const Color_Base&, double);
-    CMYK_Color& superpose(const Color_Base&);
-    CMYK_Color& invert();
-
-    std::string model() const;
-    std::string name() const;
-    std::vector<double> densities() const;
-
-    RGB_Densities to_rgb() const;
-
-    // These need to call our private constructor
-    friend Color CyanK(double);
-    friend Color MagentaK(double);
-    friend Color YellowK(double);
-    friend Color CMYK_White(double);
-    friend Color CMYK_Black(double);
-    friend Color CMYK_Neutral();
-
-  private:
-    double cyan;
-    double magenta;
-    double yellow;
-    double black;
-
-    // Construct a CMYK color without checking arguments. Final argument
-    // only changes call signature
-    CMYK_Color(double c, double m, double y,
-	       double k, const bool);
-  }; // end of class CMYK_Color
-
-} // end of namespace
-#endif /* EPIX_COLOR_CMYK */
diff --git a/graphics/epix/Color_Gray.cc b/graphics/epix/Color_Gray.cc
deleted file mode 100644
index 9d0901ca29..0000000000
--- a/graphics/epix/Color_Gray.cc
+++ /dev/null
@@ -1,129 +0,0 @@
-/*
- * Color_Gray.cc -- ePiX::Gray_Color functions
- *
- * This file is part of ePiX, a C++ library for creating high-quality
- * figures in LaTeX
- *
- * Version 1.1.17
- *
- * Last Change: September 13, 2007
- *
- *
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- *
- *
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include <sstream>
-#include <string>
-#include <vector>
-
-#include <cmath>
-
-#include "functions.h"
-
-#include "Color_Utils.h"
-#include "Color_Gray.h"
-
-namespace ePiX {
-
-  Gray_Color::Gray_Color(double d)
-    : m_gray(clip_to_unit(d)) { }
-
-
-  Gray_Color::Gray_Color(const RGB_Densities& s)
-    : m_gray((1.0/3)*(s.m_dens_red+s.m_dens_green+s.m_dens_blue)) { }
-
-  Color_Base::RGB_Densities Gray_Color::to_rgb() const
-  {
-    return Color_Base::RGB_Densities(m_gray, m_gray, m_gray);
-  }
-
-  Gray_Color* Gray_Color::clone() const
-  {
-    return new Gray_Color(*this);
-  }
-
-
-  Gray_Color& Gray_Color::filter(const Color_Base& color)
-  {
-    Color_Base::RGB_Densities s(color.to_rgb());
-
-    m_gray = min(m_gray, (1.0/3)*(s.m_dens_red+s.m_dens_green+s.m_dens_blue));
-    return *this;
-  }
-
-  Gray_Color& Gray_Color::operator*= (double c)
-  {
-    m_gray = clip_to_unit(c*m_gray);
-    return *this;
-  }
-
-  Gray_Color& Gray_Color::blend(const Color_Base& color, double d)
-  {
-    Color_Base::RGB_Densities s(color.to_rgb());
-    double wt(clip_to_unit(d));
-
-    m_gray += wt*((1.0/3)*(s.m_dens_red+s.m_dens_green+s.m_dens_blue)-m_gray);
-
-    return *this;
-  }
-
-  Gray_Color& Gray_Color::superpose(const Color_Base& color)
-  {
-    Color_Base::RGB_Densities s(color.to_rgb());
-
-    m_gray = clip_to_unit((1.0/3)*(s.m_dens_red   +
-			       s.m_dens_green +
-			       s.m_dens_blue) + m_gray);
-
-    return *this;
-  }
-
-  Gray_Color& Gray_Color::invert()
-  {
-    m_gray = 1 - m_gray;
-    return *this;
-  }
-
-
-  std::string Gray_Color::model() const
-  {
-    return "rgb";
-  }
-
-  std::string Gray_Color::name() const
-  {
-    std::ostringstream nm;
-
-    nm << "gray_" << dtohex(m_gray);
-
-    return nm.str();
-  }
-
-  std::vector<double> Gray_Color::densities() const
-  {
-    std::vector<double> val(3);
-    val.at(0) = rd(m_gray);
-    val.at(1) = rd(m_gray);
-    val.at(2) = rd(m_gray);
-    return val;
-  }
-} // end of namespace
diff --git a/graphics/epix/Color_Gray.h b/graphics/epix/Color_Gray.h
deleted file mode 100644
index 681861affa..0000000000
--- a/graphics/epix/Color_Gray.h
+++ /dev/null
@@ -1,67 +0,0 @@
-/*
- * Color_Gray.h -- ePiX::Gray_Color class
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.17
- * Last Change: September 13, 2007
- *
- * 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- *
- *
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#ifndef EPIX_COLOR_GRAY
-#define EPIX_COLOR_GRAY
-#include <string>
-#include <vector>
-
-#include "Color_Base.h"
-
-namespace ePiX {
-
-  class Gray_Color : public Color_Base {
-  public:
-    Gray_Color(double dens=0);
-    Gray_Color(const RGB_Densities&);
-
-    Gray_Color* clone() const;
-
-    Gray_Color& filter(const Color_Base&);
-
-    Gray_Color& operator*= (double c);
-
-    Gray_Color& blend(const Color_Base&, double);
-    Gray_Color& superpose(const Color_Base&);
-    Gray_Color& invert();
-
-    std::string model() const;
-    std::string name() const;
-    std::vector<double> densities() const;
-
-    RGB_Densities to_rgb() const;
-
-  private:
-    double m_gray;
-  }; // end of class Gray_Color
-
-} // end of namespace
-#endif /* EPIX_COLOR_GRAY */
diff --git a/graphics/epix/Color_Neutral.cc b/graphics/epix/Color_Neutral.cc
deleted file mode 100644
index 66e149eafd..0000000000
--- a/graphics/epix/Color_Neutral.cc
+++ /dev/null
@@ -1,98 +0,0 @@
-/*
- * Color_Neutral.cc -- ePiX::Neutral_Color
- *
- * This file is part of ePiX, a C++ library for creating high-quality
- * figures in LaTeX
- *
- * Version 1.1.18
- * Last Change: September 14, 2007
- */
-
-/*
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- *
- */
- 
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include <string>
-
-#include "Color.h"
-#include "Color_Neutral.h"
-
-namespace ePiX {
-
-  Neutral_Color::Neutral_Color() { }
-
-  Color_Base::RGB_Densities Neutral_Color::to_rgb() const
-  {
-    return Color_Base::RGB_Densities(1, 1, 1);
-  }
-
-  Neutral_Color* Neutral_Color::clone() const
-  {
-    return new Neutral_Color(*this);
-  }
-
-
-  Color_Base& Neutral_Color::filter(const Color_Base& color)
-  {
-    Color_Base* tmp(color.clone());
-    return *tmp;
-  }
-
-  Neutral_Color& Neutral_Color::operator*= (double c)
-  {
-    return *this;
-  }
-
-  Neutral_Color& Neutral_Color::blend(const Color_Base& color, double d)
-  {
-    return *this;
-  }
-
-  Neutral_Color& Neutral_Color::superpose(const Color_Base& color)
-  {
-    return *this;
-  }
-
-  Neutral_Color& Neutral_Color::invert()
-  {
-    return *this;
-  }
-
-  // string identifier -- not output-specific
-  std::string Neutral_Color::name() const
-  {
-    return "";
-  }
-
-  std::string Neutral_Color::model() const
-  {
-    return "";
-  }
-
-  std::vector<double> Neutral_Color::densities() const
-  {
-    std::vector<double> value(0);
-    return value;
-  }
-} // end of namespace
diff --git a/graphics/epix/Color_Neutral.h b/graphics/epix/Color_Neutral.h
deleted file mode 100644
index 76d73ae284..0000000000
--- a/graphics/epix/Color_Neutral.h
+++ /dev/null
@@ -1,64 +0,0 @@
-/*
- * Color_Neutral.h -- ePiX::Neutral ("unset") class
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.17
- * Last Change: September 13, 2007
- *
- * 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- *
- *
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#ifndef EPIX_COLOR_NEUTRAL
-#define EPIX_COLOR_NEUTRAL
-#include <string>
-
-#include "Color_Base.h"
-
-namespace ePiX {
-  class Neutral_Color : public Color_Base {
-  public:
-    Neutral_Color();
-
-    Color_Base& filter(const Color_Base&);
-
-    std::string name() const;
-
-  private:
-    // these functions are implemented, but should never be called
-    RGB_Densities to_rgb() const;
-    Neutral_Color* clone() const;
-
-    Neutral_Color& operator*= (double c);
-
-    Neutral_Color& blend(const Color_Base&, double);
-    Neutral_Color& superpose(const Color_Base&);
-    Neutral_Color& invert();
-
-    // not implemented, should never be called
-    std::string model() const;
-    std::vector<double> densities() const;
-  }; // end of class Neutral_Color
-
-} // end of namespace
-#endif /* EPIX_COLOR_NEUTRAL */
diff --git a/graphics/epix/Color_RGB.cc b/graphics/epix/Color_RGB.cc
deleted file mode 100644
index 9ea0f6bb3f..0000000000
--- a/graphics/epix/Color_RGB.cc
+++ /dev/null
@@ -1,146 +0,0 @@
-/*
- * Color_RGB.cc -- ePiX::RGB_Color
- *
- * This file is part of ePiX, a C++ library for creating high-quality
- * figures in LaTeX
- *
- * Version 1.1.17
- *
- * Last Change: September 13, 2007
- */
-
-/*
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- *
- */
- 
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include <sstream>
-#include <string>
-#include <vector>
-
-#include <cmath>
-
-#include "functions.h"
-
-#include "Color_Utils.h"
-#include "Color_RGB.h"
-
-namespace ePiX {
-
-  RGB_Color::RGB_Color(double r, double g, double b)
-    : red(make_r(r, g, b)), green(make_g(r, g, b)), blue(make_b(r, g, b)) { }
-
-
-  RGB_Color::RGB_Color(const RGB_Densities& s)
-    : red(s.m_dens_red), green(s.m_dens_green), blue(s.m_dens_blue) { }
-
-  Color_Base::RGB_Densities RGB_Color::to_rgb() const
-  {
-    return Color_Base::RGB_Densities(red, green, blue);
-  }
-
-  RGB_Color* RGB_Color::clone() const
-  {
-    return new RGB_Color(*this);
-  }
-
-
-  RGB_Color& RGB_Color::filter(const Color_Base& color)
-  {
-    Color_Base::RGB_Densities s(color.to_rgb());
-
-    red   = min(red,   s.m_dens_red);
-    green = min(green, s.m_dens_green);
-    blue  = min(blue,  s.m_dens_blue);
-
-    return *this;
-  }
-
-  RGB_Color& RGB_Color::operator*= (double c)
-  {
-    double r(red*c);
-    double g(green*c);
-    double b(blue*c);
-
-    red   = make_r(r, g, b);
-    green = make_g(r, g, b);
-    blue  = make_b(r, g, b);
-
-    return *this;
-  }
-
-  RGB_Color& RGB_Color::blend(const Color_Base& color, double d)
-  {
-    Color_Base::RGB_Densities s(color.to_rgb());
-    double wt(clip_to_unit(d));
-
-    red   += wt*(s.m_dens_red   - red);
-    green += wt*(s.m_dens_green - green);
-    blue  += wt*(s.m_dens_blue  - blue);
-
-    return *this;
-  }
-
-  RGB_Color& RGB_Color::superpose(const Color_Base& color)
-  {
-    Color_Base::RGB_Densities s(color.to_rgb());
-
-    red   = clip_to_unit(red   + s.m_dens_red);
-    green = clip_to_unit(green + s.m_dens_green);
-    blue  = clip_to_unit(blue  + s.m_dens_blue);
-
-    return *this;
-  }
-
-  RGB_Color& RGB_Color::invert()
-  {
-    red   = 1 - red;
-    green = 1 - green;
-    blue  = 1 - blue;
-
-    return *this;
-  }
-
-  std::string RGB_Color::model() const
-  {
-    return "rgb";
-  }
-
-  std::string RGB_Color::name() const
-  {
-    std::ostringstream nm;
-
-    nm << "rgb_" << dtohex(red) << dtohex(green) << dtohex(blue);
-
-    return nm.str();
-  }
-
-  std::vector<double> RGB_Color::densities() const
-  {
-    std::vector<double> val(3);
-    val.at(0) = rd(red);
-    val.at(1) = rd(green);
-    val.at(2) = rd(blue);
-    return val;
-  }
-} // end of namespace
diff --git a/graphics/epix/Color_RGB.h b/graphics/epix/Color_RGB.h
deleted file mode 100644
index 696577466a..0000000000
--- a/graphics/epix/Color_RGB.h
+++ /dev/null
@@ -1,68 +0,0 @@
-/*
- * Color_RGB.h -- ePiX::RGB_Color class
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.17
- * Last Change: September 13, 2007
- *
- * 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- *
- *
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#ifndef EPIX_COLOR_RGB
-#define EPIX_COLOR_RGB
-#include <string>
-#include <vector>
-
-#include "Color_Base.h"
-
-namespace ePiX {
-  class RGB_Color : public Color_Base {
-  public:
-    RGB_Color(double r=0, double g=0, double b=0);
-    RGB_Color(const RGB_Densities&);
-
-    RGB_Color* clone() const;
-
-    RGB_Color& filter(const Color_Base&);
-
-    RGB_Color& operator*= (double c);
-
-    RGB_Color& blend(const Color_Base&, double);
-    RGB_Color& superpose(const Color_Base&);
-    RGB_Color& invert();
-
-    std::string model() const;
-    std::string name() const;
-    std::vector<double> densities() const;
-
-    RGB_Densities to_rgb() const;
-
-  private:
-    double red;
-    double green;
-    double blue;
-  }; // end of class RGB_Color
-
-} // end of namespace
-#endif /* EPIX_COLOR_RGB */
diff --git a/graphics/epix/Color_Sep.cc b/graphics/epix/Color_Sep.cc
deleted file mode 100644
index e9652a9d11..0000000000
--- a/graphics/epix/Color_Sep.cc
+++ /dev/null
@@ -1,278 +0,0 @@
-/*
- * Color_Sep.cc -- ePiX CMYK Color separation functions
- *
- * This file is part of ePiX, a C++ library for creating high-quality
- * figures in LaTeX
- *
- * Version 1.1.17
- *
- * Last Change: September 13, 2007
- *
- *
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- *
- *
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include <sstream>
-#include <string>
-#include <vector>
-
-#include <cmath>
-
-#include "functions.h"
-
-#include "Color_Utils.h"
-#include "Color.h"
-#include "Color_Sep.h"
-
-namespace ePiX {
-
-  Cyan_Layer::Cyan_Layer(double arg)
-    : m_dens(clip_to_unit(arg)) { }
-
-  // Return Cyan channel of color
-  Cyan_Layer& Cyan_Layer::filter(const Color_Base& color)
-  {
-    Color_Base::RGB_Densities s(color.to_rgb());
-    if (Color(color).is_unset())
-      s = Color_Base::RGB_Densities(1,1,1);
-
-    m_dens = min(m_dens, 1-s.m_dens_red);
-    return *this;
-  }
-
-  Cyan_Layer* Cyan_Layer::clone() const
-  {
-    return new Cyan_Layer(*this);
-  }
-
-  Color_Base::RGB_Densities Cyan_Layer::to_rgb() const
-  {
-    return Color_Base::RGB_Densities(1-m_dens, 1, 1);
-  }
-
-
-  std::string Cyan_Layer::model() const
-  {
-    return "cmyk";
-  }
-
-  std::string Cyan_Layer::name() const
-  {
-    std::ostringstream nm;
-    nm << "c_proc_" << dtohex(m_dens);
-    return nm.str();
-  }
-
-  std::vector<double> Cyan_Layer::densities() const
-  {
-    std::vector<double> val(4);
-    val.at(0) = rd(m_dens);
-    val.at(1) = 0;
-    val.at(2) = 0;
-    val.at(3) = 0;
-    return val;
-  }
-
-
-  // Magenta_Layer
-  Magenta_Layer::Magenta_Layer(double arg)
-    : m_dens(clip_to_unit(arg)) { }
-
-  // Return Magenta channel of color
-  Magenta_Layer& Magenta_Layer::filter(const Color_Base& color)
-  {
-    Color_Base::RGB_Densities s(color.to_rgb());
-    if (Color(color).is_unset())
-      s = Color_Base::RGB_Densities(1,1,1);
-
-    m_dens = min(m_dens, 1-s.m_dens_green);
-    return *this;
-  }
-
-  Magenta_Layer* Magenta_Layer::clone() const
-  {
-    return new Magenta_Layer(*this);
-  }
-
-  Color_Base::RGB_Densities Magenta_Layer::to_rgb() const
-  {
-    return Color_Base::RGB_Densities(1, 1-m_dens, 1);
-  }
-
-
-  std::string Magenta_Layer::model() const
-  {
-    return "cmyk";
-  }
-
-  std::string Magenta_Layer::name() const
-  {
-    std::ostringstream nm;
-    nm << "m_proc_"  << dtohex(m_dens);
-    return nm.str();
-  }
-
-  std::vector<double> Magenta_Layer::densities() const
-  {
-    std::vector<double> val(4);
-    val.at(0) = 0;
-    val.at(1) = rd(m_dens);
-    val.at(2) = 0;
-    val.at(3) = 0;
-    return val;
-  }
-
-
-  // Yellow_Layer
-  Yellow_Layer::Yellow_Layer(double arg)
-    : m_dens(clip_to_unit(arg)) { }
-
-  // Return Yellow channel of color
-  Yellow_Layer& Yellow_Layer::filter(const Color_Base& color)
-  {
-    Color_Base::RGB_Densities s(color.to_rgb());
-    if (Color(color).is_unset())
-      s = Color_Base::RGB_Densities(1,1,1);
-
-    m_dens = min(m_dens, 1-s.m_dens_blue);
-    return *this;
-  }
-
-  Yellow_Layer* Yellow_Layer::clone() const
-  {
-    return new Yellow_Layer(*this);
-  }
-
-  Color_Base::RGB_Densities Yellow_Layer::to_rgb() const
-  {
-    return Color_Base::RGB_Densities(1, 1, 1-m_dens);
-  }
-
-
-  std::string Yellow_Layer::model() const
-  {
-    return "cmyk";
-  }
-
-  std::string Yellow_Layer::name() const
-  {
-    std::ostringstream nm;
-    nm << "y_proc_" << dtohex(m_dens);
-    return nm.str();
-  }
-
-  std::vector<double> Yellow_Layer::densities() const
-  {
-    std::vector<double> val(4);
-    val.at(0) = 0;
-    val.at(1) = 0;
-    val.at(2) = rd(m_dens);
-    val.at(3) = 0;
-    return val;
-  }
-
-
-  // Black_Layer
-  Black_Layer::Black_Layer(double arg)
-    : m_dens(clip_to_unit(arg)) { }
-
-  // Return Black channel of color
-  Black_Layer& Black_Layer::filter(const Color_Base& color)
-  {
-    Color_Base::RGB_Densities s(color.to_rgb());
-    if (Color(color).is_unset())
-      s = Color_Base::RGB_Densities(1,1,1);
-
-    double c(1-s.m_dens_red), m(1-s.m_dens_green), y(1-s.m_dens_blue);
-    double k(min(min(c, m), y));
-
-    m_dens = min(m_dens, k);
-    return *this;
-  }
-
-  Black_Layer* Black_Layer::clone() const
-  {
-    return new Black_Layer(*this);
-  }
-
-  Color_Base::RGB_Densities Black_Layer::to_rgb() const
-  {
-    return Color_Base::RGB_Densities(1-m_dens, 1-m_dens, 1-m_dens);
-  }
-
-
-  std::string Black_Layer::model() const
-  {
-    return "cmyk";
-  }
-
-  std::string Black_Layer::name() const
-  {
-    std::ostringstream nm;
-    nm << "k_proc_" << dtohex(m_dens);
-    return nm.str();
-  }
-
-  std::vector<double> Black_Layer::densities() const
-  {
-    std::vector<double> val(4);
-    val.at(0) = 0;
-    val.at(1) = 0;
-    val.at(2) = 0;
-    val.at(3) = rd(m_dens);
-    return val;
-  }
-
-
-  // null operations
-  Cyan_Layer& Cyan_Layer::operator*= (double x) { return *this; }
-  Cyan_Layer& Cyan_Layer::blend(const Color_Base& col, double d)
-  { return *this; }
-
-  Cyan_Layer& Cyan_Layer::superpose(const Color_Base& col) { return *this; }
-  Cyan_Layer& Cyan_Layer::invert() { return *this; }
-
-
-  Magenta_Layer& Magenta_Layer::operator*= (double x) { return *this; }
-  Magenta_Layer& Magenta_Layer::blend(const Color_Base& col, double d)
-  { return *this; }
-
-  Magenta_Layer& Magenta_Layer::superpose(const Color_Base& col) { return *this; }
-  Magenta_Layer& Magenta_Layer::invert() { return *this; }
-
-
-  Yellow_Layer& Yellow_Layer::operator*= (double x) { return *this; }
-  Yellow_Layer& Yellow_Layer::blend(const Color_Base& col, double d)
-  { return *this; }
-
-  Yellow_Layer& Yellow_Layer::superpose(const Color_Base& col) { return *this; }
-  Yellow_Layer& Yellow_Layer::invert() { return *this; }
-
-
-  Black_Layer& Black_Layer::operator*= (double x) { return *this; }
-  Black_Layer& Black_Layer::blend(const Color_Base& col, double d)
-  { return *this; }
-
-  Black_Layer& Black_Layer::superpose(const Color_Base& col) { return *this; }
-  Black_Layer& Black_Layer::invert() { return *this; }
-
-} // end of namespace
diff --git a/graphics/epix/Color_Sep.h b/graphics/epix/Color_Sep.h
deleted file mode 100644
index 599a14e039..0000000000
--- a/graphics/epix/Color_Sep.h
+++ /dev/null
@@ -1,133 +0,0 @@
-/*
- * Color_Sep.h -- ePiX CMYK Color separation classes
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.17
- * Last Change: September 13, 2007
- *
- * 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- *
- *
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#ifndef EPIX_COLOR_SEP
-#define EPIX_COLOR_SEP
-#include <string>
-#include <vector>
-
-#include "Color_Base.h"
-
-namespace ePiX {
-
-  class Cyan_Layer : public Color_Base {
-  public:
-    Cyan_Layer(double dens=1);
-    // Return Cyan channel of input
-    Cyan_Layer& filter(const Color_Base&);
-
-    Cyan_Layer* clone() const;
-    RGB_Densities to_rgb() const; // returns RGB(0,1,1)
-
-    std::string model() const;
-    std::string name() const;
-    std::vector<double> densities() const;
-
-  private:
-    double m_dens;
-
-    // null operations
-    Cyan_Layer& operator*= (double);
-    Cyan_Layer& blend(const Color_Base&, double);
-    Cyan_Layer& superpose(const Color_Base&);
-    Cyan_Layer& invert();
-  };
-
-  class Magenta_Layer : public Color_Base {
-  public:
-    Magenta_Layer(double dens=1);
-    // Return Magenta channel of input
-    Magenta_Layer& filter(const Color_Base&);
-
-    Magenta_Layer* clone() const;
-    RGB_Densities to_rgb() const; // returns RGB(0,1,1)
-
-    std::string model() const;
-    std::string name() const;
-    std::vector<double> densities() const;
-
-  private:
-    double m_dens;
-
-    // null operations
-    Magenta_Layer& operator*= (double);
-    Magenta_Layer& blend(const Color_Base&, double);
-    Magenta_Layer& superpose(const Color_Base&);
-    Magenta_Layer& invert();
-  };
-
-  class Yellow_Layer : public Color_Base {
-  public:
-    Yellow_Layer(double dens=1);
-    // Return Yellow channel of input
-    Yellow_Layer& filter(const Color_Base&);
-
-    Yellow_Layer* clone() const;
-    RGB_Densities to_rgb() const; // returns RGB(0,1,1)
-
-    std::string model() const;
-    std::string name() const;
-    std::vector<double> densities() const;
-
-  private:
-    double m_dens;
-
-    // null operations
-    Yellow_Layer& operator*= (double);
-    Yellow_Layer& blend(const Color_Base&, double);
-    Yellow_Layer& superpose(const Color_Base&);
-    Yellow_Layer& invert();
-  };
-
-  class Black_Layer : public Color_Base {
-  public:
-    Black_Layer(double dens=1);
-    // Return Black channel of input
-    Black_Layer& filter(const Color_Base&);
-
-    Black_Layer* clone() const;
-    RGB_Densities to_rgb() const; // returns RGB(0,1,1)
-
-    std::string model() const;
-    std::string name() const;
-    std::vector<double> densities() const;
-
-  private:
-    double m_dens;
-
-    // null operations
-    Black_Layer& operator*= (double);
-    Black_Layer& blend(const Color_Base&, double);
-    Black_Layer& superpose(const Color_Base&);
-    Black_Layer& invert();
-  };
-} // end of namespace
-#endif /* EPIX_COLOR_SEP */
diff --git a/graphics/epix/Color_Utils.cc b/graphics/epix/Color_Utils.cc
deleted file mode 100644
index 0045aafcc3..0000000000
--- a/graphics/epix/Color_Utils.cc
+++ /dev/null
@@ -1,113 +0,0 @@
-/*
- * Color_Utils.cc -- Functions for manipulating color densities
- *   These functions are not normally available to users.
- *
- * This file is part of ePiX, a C++ library for creating high-quality
- * figures in LaTeX
- *
- * Version 1.1.17
- *
- * Last Change: September 14, 2007
- */
-
-/*
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- *
- */
- 
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#include <sstream>
-#include <cmath>
-
-// #include "constants.h"
-// #include "functions.h"
-
-#include "Color_Utils.h"
-
-namespace ePiX {
-
-  // Magic number: 8-bits per color channel
-  const int COLORS(0xFF);
-
-  // Force double to [0,1]
-  double clip_to_unit(double t)
-  {
-    if (t < 0)       return 0;
-    else if (t > 1)  return 1;
-    else             return t;
-  }
-
-  double rd(double arg) // may assume arg in [0,1]
-  {
-    return floor(COLORS*arg)/COLORS; // round down to nearest 8-bit
-  }
-
-  // represent a double in [0,1] by an 8-bit hex string
-  std::string dtohex(double arg) // assumes arg>0
-  {
-    using std::ios_base;
-    int dens((int) floor(arg*COLORS));
-
-    std::ostringstream value;
-    value.setf(ios_base::hex, ios_base::basefield);
-
-    if (dens <= 0xF) // pad
-      value << "0";
-
-    value << dens;
-    return value.str();
-  }
-
-  // saw2th:R -> [-2,2] is (1) a sawtooth function; (2) the identity on [-2,2]
-  double saw2th(double x)
-  {
-    return x - 4*floor((x+2)/4);
-  }
-
-  /*
-   *  clippy(x):
-   *  1....          ____                   if (x >= 0)
-   *      .\        /.  .                     return x <=  1 ? x :  1;
-   *      . \      / .  .
-   *  0......\____/  .  .                   else
-   *      -2 -1   0  1  2 --> x               return x >= -1 ? 0 : -1-x;
-   */
-  double clippy(double x)
-  {
-    x = saw2th(x);
-    return (x >= 0) ? ( x <= 1 ? x : 1 ) : ( x >= -1 ? 0 : -1-x );
-  }
-
-  double make_r(double r, double g, double b)
-  {
-    return clip_to_unit(clippy( r) + clippy(-g) + clippy(-b));
-  }
-
-  double make_g(double r, double g, double b)
-  {
-    return clip_to_unit(clippy(-r) + clippy( g) + clippy(-b));
-  }
-
-  double make_b(double r, double g, double b)
-  {
-    return clip_to_unit(clippy(-r) + clippy(-g) + clippy( b));
-  }
-} // end of namespace
diff --git a/graphics/epix/Color_Utils.h b/graphics/epix/Color_Utils.h
deleted file mode 100644
index 9dc54f92c7..0000000000
--- a/graphics/epix/Color_Utils.h
+++ /dev/null
@@ -1,66 +0,0 @@
-/*
- * Color_Utils.h -- Functions for manipulating color densities
- *
- * This file is part of ePiX, a C++ library for creating high-quality
- * figures in LaTeX
- *
- * Version 1.1.17
- *
- * Last Change: September 14, 2007
- *
- *
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- * 
- *
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#ifndef EPIX_COLOR_UTILS
-#define EPIX_COLOR_UTILS
-
-#include <string>
-
-namespace ePiX {
-
-  double clip_to_unit(double t); // 0 if t<0, 1 if t>1, t otherwise
-
-  double rd(double); // assumes arg is in [0,1]
-
-  // represent a double in [0,1] by an 8-bit hex string
-  std::string dtohex(double arg); // assumes arg>0
-
-  // saw2th:R -> [-2,2] is (1) a sawtooth function; (2) the identity on [-2,2]
-  double saw2th(double x);
-
-  /*
-   *  clippy(x):
-   *  1....          ____                   if (x >= 0)
-   *      .\        /.  .                     return x <=  1 ? x :  1;
-   *      . \      / .  .
-   *  0......\____/  .  .                   else
-   *      -2 -1   0  1  2 --> x               return x >= -1 ? 0 : -1-x;
-   */
-  double clippy(double x);
-
-  double make_r(double r, double g, double b);
-  double make_g(double r, double g, double b);
-  double make_b(double r, double g, double b);
-} // end of namespace
-
-#endif /* EPIX_COLOR_UTILS */
diff --git a/graphics/epix/INSTALL b/graphics/epix/INSTALL
deleted file mode 100644
index fb13967718..0000000000
--- a/graphics/epix/INSTALL
+++ /dev/null
@@ -1,179 +0,0 @@
-ePiX-1.2 -- INSTALL
-
-Last Change: September 12, 2007
-
-Please consult the following files as appropriate:
-
-INSTALL (this file) -- Detailed installation instructions
-NEWS -- Recent major changes (see ChangeLog for code changes)
-README -- General overview and information
-
-
-CONVENTIONS
-
-Lines starting with a "%" denote commands typed at a shell prompt. 
-Lines starting with a "#" denote commands run as root.
-Don't type the prompt characters "%" or "#". :)
-
-"$(prefix)" stands for the complete path to the install directory,
-e.g. "/usr/local" or "/home/pootle/epix".
-
-
-DEPENDENCIES
-
-The following software must be installed on your system in order for
-you to use ePiX:
-
-  * The GNU shell, bash
-  * A C++ compiler and development libraries, preferably g++ (> 3.2)
-  * GhostScript, ImageMagick, and teTeX
-  * GNU binutils, textutils, and fileutils (ar, sed, grep, ln, rm...)
-
-Please consult your system documentation for information on installing
-these components. The POST-INSTALL file contains potentially helpful
-information, as well. The manual contains more detailed instructions
-for Windows (Cygwin) and Mac OS X (fink/fink commander) users.
-
-
-INSTALLATION
-
---- Synopsis ---
-
-(1) Unpack
-(2) Configure:
-
-% ./configure [options]
-
-(3) Build:
-
-% make
-% make install (may require system privileges)
-
-
---- Step-by-step Instructions ---
-
-(1) Unpack
-
-  Tarballs are available gzip or bzip2 compressed. To unpack, use the
-  appropriate version number and tar options (z for .gz, j for .bz2, v
-  to see filenames unpacked):
-
-% tar -zxf epix-x.y.z.tar.gz
-
-  or
-
-% tar -jxf epix-x.y.z.tar.bz2
-
-  If your "tar" doesn't understand decompression, do
-
-% gunzip -c epix-x.y.z.tar.gz | tar -xf -
-
-  or
-
-% bzcat epix-x.y.z.tar.bz2 | tar -xf -
-
-
-  Change to the source directory:
-
-% cd epix-x.y.z
-
-
-(2) Configure the package:
-
-  Most users can run the command
-
-% ./configure
-
-  To change the installation directory from the default (/usr/local)
-  to (say) your home directory, do
-
-% ./configure --prefix=${HOME}
-
-  To list all options, run
-
-% ./configure --help
-
-
-(3) Compile and install:
-
-% make
-
-  Be sure you are using GNU make. If the build fails immediately with
-  an error about unexpected characters in the Makefile, speak to your
-  system administrator about availability of GNU make, or try running
-  the command "gmake".
-
-  If there are no build errors, you're ready to install.
-
-  You must have write permission in the install directory you selected
-  in step (2). If you have been logged on as yourself until now (a Very
-  Good Idea) and are installing in a system directory, do:
-
-% su
-Password: <your root password>
-
-# make install
-
-  (The root prompt on many systems is # rather than %.) If the install
-  succeeds, you're done:
-
-# exit
-
-  If you are installing somewhere in your HOME directory, just type
-
-% make install
-
-
-(4) Post-Install:
-
-  Documentation is installed in $(prefix)/share/doc/epix, as compiled
-  files (ps, pdf, info) and tarred LaTeX sources.
-
-  The directory $(prefix)/share/doc/epix/config contains two optional
-  files: Jay Belanger's emacs mode for working with ePiX files, and
-  completions for users of Ian MacDonald's bash completions package.
-  POST-INSTALL has instructions on installing and using these files.
-
-  From the source directory, do
-  
-% make clean
-
-  to clean the source tree of compiled files. This command removes the
-  top-level Makefile. Run ./configure to re-create the Makefile if
-  necessary.
-
-
-(5) Uninstalling:
-
-  To remove a version of ePiX from your system, go to the directory
-  where the sources were unpacked, run ./config.status, log on as root
-  if necessary, and do:
-
-# make uninstall
-
-
-  Alternatively, remove the following files and directories manually,
-  replacing $(prefix) with the install path, e.g. "/usr/local".
-
-[] Shell scripts
-  $(prefix)/bin/{elaps,epix,flix,laps}
-
-[] Static libraries and shell code
-  $(prefix)/lib/epix/
-
-[] Header files
-  $(prefix)/include/epix.h  (user header)
-  $(prefix)/include/epix/   (devel headers)
-
-[] Configuration files, manuals, and samples
-  $(prefix)/share/doc/epix/
-
-
---- Contact Information ---
-
-If you have questions, comments, suggestions, etc., please write to:
-
-Andrew D. ("Andy") Hwang  <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
-Dept. of Mathematics and Computer Science
-College of the Holy Cross
-Worcester, MA, 01610-2395, USA
diff --git a/graphics/epix/Makefile.am b/graphics/epix/Makefile.am
deleted file mode 100644
index eada49e89c..0000000000
--- a/graphics/epix/Makefile.am
+++ /dev/null
@@ -1,115 +0,0 @@
-## epix-1.x Makefile.am for top-level directory
-##
-## Process this file with automake to produce Makefile.in
-
-#if BUILD_CONTRIB
-  # Must be in this order!
-#  MAYBE_DIRS = contrib contrib/doc
-#endif
-
-# SUBDIRS = . samples doc $(MAYBE_DIRS)
-SUBDIRS = . samples doc
-
-# Now stuff for this directory specifically
-
-bin_SCRIPTS = epix elaps flix laps
-
-pkglib_LIBRARIES = libepix.a
-pkglib_DATA = epix-lib.sh
-include_HEADERS = epix.h
-
-libepix_a_CXXSOURCES = active_screen.cc affine.cc angle_units.cc \
-	arrow_data.cc arrow_style.cc axis.cc camera.cc circle.cc clipping.cc \
-	Color_Base.cc Color.cc Color_CMY.cc Color_CMYK.cc Color_Gray.cc \
-	Color_Neutral.cc Color_RGB.cc Color_Sep.cc Color_Utils.cc \
-	cropping.cc curves.cc \
-	data_bins.cc data_file.cc data_mask.cc domain.cc \
-	eepic.cc facet.cc format.cc frac.cc frame.cc functions.cc \
-	geometry.cc glyph.cc halfspace.cc hatching.cc \
-	intersections.cc interval.cc label_data.cc label_style.cc \
-	legend.cc legend_item.cc legend_tile.cc \
-	length.cc lens.cc markers.cc marker_style.cc \
-	mask_diamond.cc mask_ellipse.cc mask_rectangle.cc \
-	paint_style.cc pairs.cc path.cc path_data.cc \
-	path_style.cc pen_arrow.cc pen_data.cc pen_fill.cc pen_line.cc \
-	picture.cc picture_data.cc plane.cc plots.cc pst.cc \
-	screen.cc screen_crop.cc screen_data.cc screen_mask.cc \
-	segment.cc spline.cc sphere.cc state.cc surface.cc tikz.cc tile.cc \
-	triples.cc utils.cc verbatim.cc
-#	polygon.cc 
-
-libepix_a_HDRS = $(libepix_a_CXXSOURCES:.cc=.h) constants.h \
-	crop_algorithms.h deriv.h edge_data.h enums.h errors.h \
-	map.h plot_algorithms.h spline_data.h
-
-libepix_a_SOURCES = $(libepix_a_CXXSOURCES) $(libepix_a_HDRS)
-
-libepix_a_LIBADD = $(libepix_a_CXXSOURCES:.cc=.o)
-
-pkginclude_HEADERS = $(libepix_a_HDRS)
-
-man_MANS = epix.1 elaps.1 flix.1 laps.1
-
-if ENABLE_EPIX_EL
-  EPIX_EL = epix.el
-endif
-
-EPIX_CONFFILES = bash_completions $(EPIX_EL)
-
-EPIX_NOTEFILES = AUTHORS BUGS ChangeLog COPYING INSTALL NEWS POST-INSTALL \
-	README THANKS VERSION
-
-EXTRA_DIST = $(bin_SCRIPTS) $(man_MANS) $(EPIX_CONFFILES) $(EPIX_NOTEFILES) \
-	$(pkgdata_DATA)
-
-CLEANFILES = *~ $(libepix_a_OBJECTS) $(bin_SCRIPTS) $(bin_SCRIPTS:=-local) \
-	epix.h epix.1 epix.el
-
-# Headers
-epix.h: $(libepix_a_HDRS)
-	./make_header
-
-# Scripts; we create local variants which will work during the build process
-epix elaps flix laps: %: %.in epix.el
-	sed -e 's%^#! /bin/bash%#! $(BASH_PATH)%;' \
-	    -e 's%@bindir\@%$(bindir)%;' \
-	    -e 's%@pkglibdir\@%$(pkglibdir)%;' \
-	    -e 's%@includedir\@%$(includedir)%;' \
-	    -e 's%@RUNTIME_COMPILER\@%$(RUNTIME_COMPILER)%;' $< > $@
-	sed -e 's%^#! /bin/bash%#! $(BASH_PATH)%;' \
-	    -e 's%@bindir\@%$(CURDIR)%;' \
-	    -e 's%@pkglibdir\@%$(CURDIR)%;' \
-	    -e 's%@includedir\@%$(CURDIR)%;' \
-	    -e 's%@RUNTIME_COMPILER\@%$(CXX)%;' $< > $@-local
-	chmod a+x $@ $@-local
-
-# libepix.a
-libepix.a: $(libepix_a_OBJECTS)
-	ar -ru libepix.a $(libepix_a_OBJECTS)
-	$(RANLIB) libepix.a
-
-# object file dependencies
-$(libepix_a_LIBADD): %.o: %.cc %.h
-
-# Manpage
-epix.1: epix.1.in
-	sed -e 's%@docdir\@%$(docdir)%;' $< > $@
-
-#  emacs mode
-epix.el: epix.el.in
-	sed -e 's%@docdir\@%$(docdir)%;' $< > $@
-
-# Extra things to install
-install-data-local:
-	@echo; echo "Installing notes and configuration files"
-	./mkinstalldirs $(DESTDIR)$(docdir)/notes $(DESTDIR)$(docdir)/config
-	$(INSTALL_DATA) $(EPIX_NOTEFILES) $(DESTDIR)$(docdir)/notes
-	$(INSTALL_DATA) $(EPIX_CONFFILES) $(DESTDIR)$(docdir)/config
-
-# This is being installed by install-exec, but should not be executable
-install-exec-local: install-pkglibDATA
-	chmod a-x $(DESTDIR)$(pkglibdir)/epix-lib.sh
-
-uninstall-local:
-	-rm -rf $(DESTDIR)$(docdir)/notes $(DESTDIR)$(docdir)/config
-	-rmdir $(DESTDIR)$(docdir)
diff --git a/graphics/epix/Makefile.in b/graphics/epix/Makefile.in
deleted file mode 100644
index 7aee503276..0000000000
--- a/graphics/epix/Makefile.in
+++ /dev/null
@@ -1,1025 +0,0 @@
-# Makefile.in generated by automake 1.9.6 from Makefile.am.
-# @configure_input@
-
-# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
-# 2003, 2004, 2005  Free Software Foundation, Inc.
-# This Makefile.in is free software; the Free Software Foundation
-# gives unlimited permission to copy and/or distribute it,
-# with or without modifications, as long as this notice is preserved.
-
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
-# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
-# PARTICULAR PURPOSE.
-
-@SET_MAKE@
-
-
-
-
-srcdir = @srcdir@
-top_srcdir = @top_srcdir@
-VPATH = @srcdir@
-pkgdatadir = $(datadir)/@PACKAGE@
-pkglibdir = $(libdir)/@PACKAGE@
-pkgincludedir = $(includedir)/@PACKAGE@
-top_builddir = .
-am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd
-INSTALL = @INSTALL@
-install_sh_DATA = $(install_sh) -c -m 644
-install_sh_PROGRAM = $(install_sh) -c
-install_sh_SCRIPT = $(install_sh) -c
-INSTALL_HEADER = $(INSTALL_DATA)
-transform = $(program_transform_name)
-NORMAL_INSTALL = :
-PRE_INSTALL = :
-POST_INSTALL = :
-NORMAL_UNINSTALL = :
-PRE_UNINSTALL = :
-POST_UNINSTALL = :
-subdir = .
-DIST_COMMON = README $(am__configure_deps) $(include_HEADERS) \
-	$(pkginclude_HEADERS) $(srcdir)/Makefile.am \
-	$(srcdir)/Makefile.in $(top_srcdir)/configure AUTHORS COPYING \
-	ChangeLog INSTALL NEWS THANKS TODO config.guess config.sub \
-	depcomp install-sh missing mkinstalldirs
-ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
-am__aclocal_m4_deps = $(top_srcdir)/configure.ac
-am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
-	$(ACLOCAL_M4)
-am__CONFIG_DISTCLEAN_FILES = config.status config.cache config.log \
- configure.lineno configure.status.lineno
-mkinstalldirs = $(SHELL) $(top_srcdir)/mkinstalldirs
-CONFIG_CLEAN_FILES =
-am__vpath_adj_setup = srcdirstrip=`echo "$(srcdir)" | sed 's|.|.|g'`;
-am__vpath_adj = case $$p in \
-    $(srcdir)/*) f=`echo "$$p" | sed "s|^$$srcdirstrip/||"`;; \
-    *) f=$$p;; \
-  esac;
-am__strip_dir = `echo $$p | sed -e 's|^.*/||'`;
-am__installdirs = "$(DESTDIR)$(pkglibdir)" "$(DESTDIR)$(bindir)" \
-	"$(DESTDIR)$(man1dir)" "$(DESTDIR)$(pkglibdir)" \
-	"$(DESTDIR)$(includedir)" "$(DESTDIR)$(pkgincludedir)"
-pkglibLIBRARIES_INSTALL = $(INSTALL_DATA)
-LIBRARIES = $(pkglib_LIBRARIES)
-AR = ar
-ARFLAGS = cru
-libepix_a_AR = $(AR) $(ARFLAGS)
-am__DEPENDENCIES_1 = active_screen.o affine.o angle_units.o \
-	arrow_data.o arrow_style.o axis.o camera.o circle.o clipping.o \
-	Color_Base.o Color.o Color_CMY.o Color_CMYK.o Color_Gray.o \
-	Color_Neutral.o Color_RGB.o Color_Sep.o Color_Utils.o \
-	cropping.o curves.o data_bins.o data_file.o data_mask.o \
-	domain.o eepic.o facet.o format.o frac.o frame.o functions.o \
-	geometry.o glyph.o halfspace.o hatching.o intersections.o \
-	interval.o label_data.o label_style.o legend.o legend_item.o \
-	legend_tile.o length.o lens.o markers.o marker_style.o \
-	mask_diamond.o mask_ellipse.o mask_rectangle.o paint_style.o \
-	pairs.o path.o path_data.o path_style.o pen_arrow.o pen_data.o \
-	pen_fill.o pen_line.o picture.o picture_data.o plane.o plots.o \
-	pst.o screen.o screen_crop.o screen_data.o screen_mask.o \
-	segment.o spline.o sphere.o state.o surface.o tikz.o tile.o \
-	triples.o utils.o verbatim.o
-libepix_a_DEPENDENCIES = $(am__DEPENDENCIES_1)
-am__objects_1 = active_screen.$(OBJEXT) affine.$(OBJEXT) \
-	angle_units.$(OBJEXT) arrow_data.$(OBJEXT) \
-	arrow_style.$(OBJEXT) axis.$(OBJEXT) camera.$(OBJEXT) \
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-
-# Manpage
-epix.1: epix.1.in
-	sed -e 's%@docdir\@%$(docdir)%;' $< > $@
-
-#  emacs mode
-epix.el: epix.el.in
-	sed -e 's%@docdir\@%$(docdir)%;' $< > $@
-
-# Extra things to install
-install-data-local:
-	@echo; echo "Installing notes and configuration files"
-	./mkinstalldirs $(DESTDIR)$(docdir)/notes $(DESTDIR)$(docdir)/config
-	$(INSTALL_DATA) $(EPIX_NOTEFILES) $(DESTDIR)$(docdir)/notes
-	$(INSTALL_DATA) $(EPIX_CONFFILES) $(DESTDIR)$(docdir)/config
-
-# This is being installed by install-exec, but should not be executable
-install-exec-local: install-pkglibDATA
-	chmod a-x $(DESTDIR)$(pkglibdir)/epix-lib.sh
-
-uninstall-local:
-	-rm -rf $(DESTDIR)$(docdir)/notes $(DESTDIR)$(docdir)/config
-	-rmdir $(DESTDIR)$(docdir)
-# Tell versions [3.59,3.63) of GNU make to not export all variables.
-# Otherwise a system limit (for SysV at least) may be exceeded.
-.NOEXPORT:
diff --git a/graphics/epix/NEWS b/graphics/epix/NEWS
deleted file mode 100644
index c9b7c4ddd6..0000000000
--- a/graphics/epix/NEWS
+++ /dev/null
@@ -1,91 +0,0 @@
-ePiX-1.2 -- NEWS
-
-Last Change: September 12, 2007
-
-Please consult the following files as appropriate:
-
-INSTALL -- Detailed installation instructions
-NEWS (this file) -- Recent major changes (see ChangeLog for code changes)
-README -- General overview and information
-
-
-If you are new to ePiX, you may safely ignore this file.
-
-OVERVIEW
-
-ePiX 1.2.x has been written almost entirely from scratch.  The drawing
-model is unchanged, and some old files will compile as is, but there
-are a few changes of syntax. 
-
-
-SYNTAX CHANGES
-
-Generally, global variables have been deprecated or removed, and
-should be replaced by function calls in new files.
-
-* (Recommended) The global size variables x_min, x_max, y_min, y_max,
-  x_size, and y_size should be replaced by the function calls xmin(),
-  etc. (No underscores.)
-
-* (Mandatory) The global variable tix in a flix file must be
-  manipulated through the function tix().
-
-* (Suggested) The camera may be accessed through the function
-  the_camera().
-
-* (Mandatory) Camera orientation is controlled with functions named
-  tilt, pan, and roll; each rotates the camera about an axis through
-  the viewpoint, not through the target.
-
-* (Suggested) The size and bounding box may be given in one command,
-  such as picture(P(-1,0), P(1,1), "4x3in"). The old syntax will be
-  retained indefinitely.
-
-* (Mandatory) The command use_pstricks() is obsolete.
-
-* (Mandatory) Deprecated aliases no longer exist: triple (for the P
-  class), D (for Deriv), and I (for Integral). Lowercase trig function
-  names conflicted with the standard namespace and have been removed.
-
-* (Mandatory) The geometric object commands (circle, plane, segment,
-  sphere) which used to create class objects now perform drawing. The
-  classes are available with capitalized names (Circle, Plane,
-  Segment, Sphere).
-
-
-NEW FEATURES
-
-* Output is cleanly separated from the internal representation.
-  Figures may be written with a choice of macros---PSTricks, tikz, and
-  eepic at present---and new output types are easily coded so long as
-  the format supports arbitrary line segments, color, and the ability
-  to place a LaTeX box at a specified location.
-
-* Colors are a manipulable data type, available in RGB, CMY, CMYK, and
-  Gray models. xcolor-style operations, such as color model
-  conversion, blending, superposition, and inversion are provided.
-
-  The camera has a filter which affects the colors of all scene
-  elements. Filters performing CMYK separation are provided.
-
-* Color filling is controlled with declarations, similarly to line
-  colors in ePiX 1.0.x.  Arrows and markers of type spot, dot, ddot,
-  and~circ are now colored like other markers.  Shaded surfaces may be
-  colored with position-dependent functions.
-
-  If a figure contains many shaded elements, a color-capable output
-  format (PSTricks or tikz) should be used for efficiency.  Filled
-  regions are implemented as fine hatching in eepic.
-
-* An axis class provides coordinate axes with labels in a variety of
-  styles: decimals or scientific notation of specified precision,
-  fractions, trig fractions, logarithmic labels in arbitrary (integer)
-  base, and user-supplied styles.
-
-* ePiX 1.2.x performs page layout. Sub-figures may be manipulated
-  flexibly. The sample files give several applications.
-
-* Non-member intersection operators for Circles, Planes, Segments, and
-  Spheres are provided.  A ``non-generic'' intersection does not
-  throw an exception, but instead returns an undrawable ``malformed''
-  object.
diff --git a/graphics/epix/POST-INSTALL b/graphics/epix/POST-INSTALL
deleted file mode 100644
index 5dec6e6970..0000000000
--- a/graphics/epix/POST-INSTALL
+++ /dev/null
@@ -1,123 +0,0 @@
-ePiX-1.2 -- POST-INSTALL
- 
-Last Change: September 12, 2007
- 
-This file contains post-install configuration instructions for users.
-Please consult the following files as appropriate:
-
-INSTALL -- Detailed installation instructions
-NEWS -- Recent major changes (see ChangeLog for code changes)
-README -- General overview and information
-
-
-CONVENTIONS
-
-Lines starting with a "%" denote commands typed at a shell prompt. 
-Lines starting with a "#" denote commands run as root.
-Don't type the prompt characters "%" or "#". :)
-
-"$(prefix)" stands for the complete path to the install directory,
-e.g. "/usr/local" or "/home/pootle/epix".
-
-Files mentioned below are installed in $(prefix)/share/doc/epix/config/
-
-
-PROGRAMMABLE COMPLETION in bash
-
-If you type "epix c[TAB]", bash normally displays all files and
-directories whose name starts with "c". If programmable completion is
-enabled, bash will show only those files whose name starts with "c"
-*and* whose extension is that of an epix input file.
-
-Programmable completion in bash is available only with Version 2.05 and
-later, and you must install Ian MacDonald's bash completion package. Do
-a search for "bash programmable completion" at
-
-  http://freshmeat.net
-
-The file "$(prefix)/share/doc/epix/config/bash_completions" contains
-programmable completion code for ePiX's shell scripts. These lines
-should be put into your bash config file (~/.bashrc) just after the
-line that includes the system-wide bash completion config file (q.v.).
-
-
-EMACS MODE
-
-Jay Belanger has kindly provided an emacs mode (epix.el) for working
-with epix source files. To use epix mode, put a copy of the file
-"epix.el" in your emacs load path; under GNU/Linux, an appropriate
-system directory is /usr/share/emacs. If you are not the superuser,
-use a directory such as ${HOME}/share/emacs:
- 
-% mkdir -p ~/share/emacs
-% cp $(prefix)/share/doc/epix/config/epix.el ~/share/emacs/
-
-Then add these lines to your .emacs file:
----(snip)--- 
-(setq load-path (cons "~/share/emacs/" load-path))
-(setq auto-mode-alist (cons '("\\.xp" . epix-mode) auto-mode-alist))
-(autoload 'epix-mode "epix" "ePiX editing mode" t)
-(setq epix-mark-files-as-epix t)
-(setq epix-insert-template-in-empty-buffer t)
-
-(autoload 'flix-mode "epix" "ePiX editing mode" t)
-(setq auto-mode-alist (cons '("\\.flx" . flix-mode) auto-mode-alist))
----(snip)---
-
-Change "~/share/emacs/" in the first line as appropriate. If you open
-a new file with extension ".xp" or ".flx", emacs will automatically
-insert a matching preamble template and enter epix-mode or flix-mode,
-respectively.  You can then compile and preview ePiX source files with
-emacs commands, or read the info file; please see epix.el for more
-details.
-
-If necessary (for instance, if your source file must have extension
-".cc" for some reason), you can enter epix mode manually by typing 
-
-M-x epix-mode
-
-in emacs. (The notation "M-x" means the emacs META key, usually ESC,
-followed by "x".) 
-
-
-OTHER CONFIG FILES
-
-The files ~/.dvipsrc and ~/.epixrc affect the behavior of epix, elaps,
-and laps. The use of .epixrc is documented in the tutorial. Neither
-file is required in order to use ePiX.
-
-
-SETTING the PATH
-
-If you've installed ePiX but receive a "command not found" error
-message when trying to compile figures, you probably need to set your
-PATH, the shell environment variable listing the directories to be
-searched for executable code.
-
-As above, $(prefix) stands for the directory in which ePiX has been
-installed and "%" denotes a prompt. Below, $(prefix) must be replaced
-with the actual path.  Issue the command
-
-% echo $PATH
-
-If $(prefix)/bin is not shown, you must determine what shell you're
-using and edit the appropriate shell configuration file. Do
-
-% ?
-
-If the response is:		Put this line:			Into the file:
--------------------		--------------			--------------
-bash: ?: command not found	export PATH=$PATH:$(prefix)/bin	~/.bashrc
-
-?: no match			setenv PATH $PATH:$(prefix)/bin	~/.cshrc
-
-In the first case, do not put spaces around the equals sign.  If the
-response is something else, please consult your system administrator
-for assistance.
-
-Now re-load the appropriate configuration file and try an ePiX command:
-
-% source ~/.bashrc
-% epix --help
-
-If this still doesn't work, please consult your system administrator.
diff --git a/graphics/epix/README b/graphics/epix/README
deleted file mode 100644
index 91d8889ceb..0000000000
--- a/graphics/epix/README
+++ /dev/null
@@ -1,139 +0,0 @@
-ePiX -- README
-
-Last Change: September 12, 2007
-
-Please consult the following files as appropriate:
-
-INSTALL -- Detailed installation instructions
-NEWS -- Recent major changes (see ChangeLog for code changes)
-README (this file) -- General overview and information
-
-
-DESCRIPTION
-
-ePiX (pronounced like "epic" with a soft "k", playing on "TeX"), a
-collection of command line utilities for *nix, creates mathematically
-accurate figures, plots, and movies using easy-to-learn syntax. The
-output is expressly designed for use with LaTeX.
-
-The user interface resembles that of LaTeX itself: You prepare a short
-scene description in a text editor, then compile the input file into a
-picture. LaTeX- and web-compatible output types include a LaTeX
-picture-like environment written with PSTricks, tikz, or eepic macros;
-vector images (eps, ps, and pdf); and bitmap images (png, mng, gif).
-
-
-INSTALLATION
-
-Please see the "INSTALL" file.
-
-
-OVERVIEW
-
-ePiX's command-line conversion utilities are
-
-* epix: ePiX to eepic
-
-* elaps: ePiX and eepic to eps or pdf
-
-* laps: (La)TeX to PostScript
-
-* flix: ePiX to png or mng
-
-Each script prints a detailed help message when invoked with the
-option "-h" (help)
-
-
-DOCUMENTATION
-
-ePiX documentation is installed in $(prefix)/share/doc/epix, by
-default /usr/local/share/doc/epix.
-
-The manual, a complete description of ePiX's features and use, is
-installed as PostScript (for printing), hyperlinked PDF (for online
-reading), GNU info (for reference within emacs), and as LaTeX sources.
-
-
-DEVELOPER FILES
-
-The header files are installed in $(pkgincludedir), by default
-$(prefix)/include/epix.
-
-
-INTERNET DOWNLOAD SITES
-
-*  http://math.holycross.edu/~ahwang/epix/ePiX.html
-
-  Links to currently available packages and documentation, general
-  information, sample images and animations, and summaries of the
-  latest developments.
-
-
-*  http://freshmeat.net/projects/epix
-
-  Announcements of recent releases, project stats, and links.
-
-
-*  http://www.ctan.org/tex-archive/graphics/epix/
-
-  Stable releases with synchronized documentation.
-
-
-*  http://savannah.nongnu.org/cgi-bin/viewcvs/epix/1.2
-
-  The very latest source code by CVS.
-
-
-As with all free (GPL) software, the source code can be obtained on a
-floppy disk from the author by post ("snail mail"), in this case from:
-
-Andrew D. Hwang    <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
-Dept. of Mathematics and Computer Science
-College of the Holy Cross
-Worcester, MA, 01610-2395, USA
-
-
-PYEPIX
-
-Though ePiX can be compiled and run using CygWin, Windows users may be
-more interested in Andrew Sterian's Pyepix package, an implementation
-of ePiX-1.0.4 in Python. Pyepix is available from
-
-  http://claymore.engineer.gvsu.edu/~steriana/Python/index.html
-
-and requires Python 2.2 or newer.
-
-
-MAILING LIST
-
-There are two mailing lists, for users and for development issues.
-Please visit
-
-  http://savannah.nongnu.org/mail/?group=epix
-
-to subscribe.
-
-
-COPYLEFT and DISTRIBUTION
-
-ePiX and its documentation are distributed under the terms of the GNU
-GPL.  This program and its documentation come with ABSOLUTELY NO
-WARRANTY OF ANY KIND, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR
-FITNESS FOR A PARTICULAR PURPOSE. This is the same guarantee granted
-by all common software, including expensive, proprietary software
-whose quality you have no way to verify directly, and whose license
-you tacitly accept merely by opening the package.
-
-Feedback about this program (suggestions for features, etc.) is 
-welcome. If you find this program useful, please consider making a
-contribution to the Free Software Foundation; see
-
-  http://www.fsf.org
-
-
---- Contact Information ---
-
-Andrew D. ("Andy") Hwang  <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
-Dept. of Mathematics and Computer Science
-College of the Holy Cross
-Worcester, MA, 01610-2395, USA
diff --git a/graphics/epix/THANKS b/graphics/epix/THANKS
deleted file mode 100644
index 49890d72bc..0000000000
--- a/graphics/epix/THANKS
+++ /dev/null
@@ -1,122 +0,0 @@
-ePiX -- THANKS
-
-ePiX is built on the work of many people (unfortunately, most of whom 
-I am unaware). A few of the obvious ones are, in alphabetical order:
-
-Donald E. Knuth		TeX, and so much more
-Conrad Kwok		eepic
-
-Leslie Lamport		LaTeX
-
-Tim Morgan		tpic
-
-Piet van Oostrum	eepic
-
-Sunil Podar 		the epic style
-
-Richard M. Stallman	the GNU project
-
-Till Tantau		pgf/tikz
-
-Herbert Voss            PSTricks
-Timothy Van Zandt
-
-----------------------------------------------------------------------
-
-Special thanks to:	For:
-
-Jay Belanger		The emacs mode
-Robin Blume-Kohout	Design suggestions
-
-Svend Daugaard Pedersen	Extended coordinate systems and plotting capability
-
-Julian Gilbey		Getting ePiX to work with autoconf/automake
-Guido Gonzato		Creating and maintaining the RPM
-
-Marcus Hanwell		Data plotting and manipulation code
-Yvon Henel		French translation of the manual
-
-Jean-Michel Sarlat	http://melusine.eu.org/syracuse/epix/
-Andrew Sterian		Pyepix and its Windows package
-
-
----
-
-Ports contributors and maintainers:
-
-Crux:
-Youn\`es Hafri		http://yhafri.club.fr/crux/index.html
-
-Debian:			http://packages.debian.org/unstable/tex/epix1
-Julian Gilbey
-
-
-FreeBSD:		http://www.freshports.org/graphics/epix/
-Tsuguru Kato
-
-
-Gentoo:			http://packages.gentoo.org/search/?sstring=epix
-Markus Dittrich
-Danny van Dyk
-Christian Faulhammer
-Olivier Fisette
-Chris Gianelloni
-Michael Hanselmann
-Marcus Hanwell
-David Holm
-Peter Johanson
-Patrick Kursawe
-Tobias Scherbaum
-Markus Ullmann
-
-T2:			http://www.t2-project.org/packages/epix.html
-Ren\'e Rebe
-
-
-----------------------------------------------------------------------
-
-Many thanks to the following people, who have helped publicize ePiX
-or reported and/or patched bugs (in both code and documentation)
-
-<Anonymous>
-
-Maik Beckmann
-Jay Belanger
-Felipe Paulo Guazzi Bergo
-Karl Berry
-Robin Blume-Kohout
-
-Patrick Cousot
-
-Stephen Gibson
-Julian Gilbey
-Dov Grobgeld
-Bob Grover
-
-Jim Hefferon
-Yvon Henel
-Hartmut Henkel
-
-Herng-Jeng Jou
-
-Walter A. Kehowski
-
-Jacques L'helgoual
-
-Kevin McKormick
-Ross Moore
-
-Thorsten Riess
-
-Neel Smith
-Michael Somos
-Andrew Sterian
-
-Ryszard Tanas
-Kai Trukenmueller
-
-Torbjorn Vik
-
-Wenguang Wang
-Gabe Weaver
-Mariusz Wodzicki
diff --git a/graphics/epix/TODO b/graphics/epix/TODO
deleted file mode 100644
index e69de29bb2..0000000000
--- a/graphics/epix/TODO
+++ /dev/null
diff --git a/graphics/epix/VERSION b/graphics/epix/VERSION
deleted file mode 100644
index 6085e94650..0000000000
--- a/graphics/epix/VERSION
+++ /dev/null
@@ -1 +0,0 @@
-1.2.1
diff --git a/graphics/epix/aclocal.m4 b/graphics/epix/aclocal.m4
deleted file mode 100644
index b6186f2ab8..0000000000
--- a/graphics/epix/aclocal.m4
+++ /dev/null
@@ -1,879 +0,0 @@
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-
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-      # broken ls alias from the environment.  This has actually
-      # happened.  Such a system could not be considered "sane".
-      AC_MSG_ERROR([ls -t appears to fail.  Make sure there is not a broken
-alias in your environment])
-   fi
-
-   test "$[2]" = conftest.file
-   )
-then
-   # Ok.
-   :
-else
-   AC_MSG_ERROR([newly created file is older than distributed files!
-Check your system clock])
-fi
-AC_MSG_RESULT(yes)])
-
-# Copyright (C) 2001, 2003, 2005  Free Software Foundation, Inc.
-#
-# This file is free software; the Free Software Foundation
-# gives unlimited permission to copy and/or distribute it,
-# with or without modifications, as long as this notice is preserved.
-
-# AM_PROG_INSTALL_STRIP
-# ---------------------
-# One issue with vendor `install' (even GNU) is that you can't
-# specify the program used to strip binaries.  This is especially
-# annoying in cross-compiling environments, where the build's strip
-# is unlikely to handle the host's binaries.
-# Fortunately install-sh will honor a STRIPPROG variable, so we
-# always use install-sh in `make install-strip', and initialize
-# STRIPPROG with the value of the STRIP variable (set by the user).
-AC_DEFUN([AM_PROG_INSTALL_STRIP],
-[AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
-# Installed binaries are usually stripped using `strip' when the user
-# run `make install-strip'.  However `strip' might not be the right
-# tool to use in cross-compilation environments, therefore Automake
-# will honor the `STRIP' environment variable to overrule this program.
-dnl Don't test for $cross_compiling = yes, because it might be `maybe'.
-if test "$cross_compiling" != no; then
-  AC_CHECK_TOOL([STRIP], [strip], :)
-fi
-INSTALL_STRIP_PROGRAM="\${SHELL} \$(install_sh) -c -s"
-AC_SUBST([INSTALL_STRIP_PROGRAM])])
-
-# Check how to create a tarball.                            -*- Autoconf -*-
-
-# Copyright (C) 2004, 2005  Free Software Foundation, Inc.
-#
-# This file is free software; the Free Software Foundation
-# gives unlimited permission to copy and/or distribute it,
-# with or without modifications, as long as this notice is preserved.
-
-# serial 2
-
-# _AM_PROG_TAR(FORMAT)
-# --------------------
-# Check how to create a tarball in format FORMAT.
-# FORMAT should be one of `v7', `ustar', or `pax'.
-#
-# Substitute a variable $(am__tar) that is a command
-# writing to stdout a FORMAT-tarball containing the directory
-# $tardir.
-#     tardir=directory && $(am__tar) > result.tar
-#
-# Substitute a variable $(am__untar) that extract such
-# a tarball read from stdin.
-#     $(am__untar) < result.tar
-AC_DEFUN([_AM_PROG_TAR],
-[# Always define AMTAR for backward compatibility.
-AM_MISSING_PROG([AMTAR], [tar])
-m4_if([$1], [v7],
-     [am__tar='${AMTAR} chof - "$$tardir"'; am__untar='${AMTAR} xf -'],
-     [m4_case([$1], [ustar],, [pax],,
-              [m4_fatal([Unknown tar format])])
-AC_MSG_CHECKING([how to create a $1 tar archive])
-# Loop over all known methods to create a tar archive until one works.
-_am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
-_am_tools=${am_cv_prog_tar_$1-$_am_tools}
-# Do not fold the above two line into one, because Tru64 sh and
-# Solaris sh will not grok spaces in the rhs of `-'.
-for _am_tool in $_am_tools
-do
-  case $_am_tool in
-  gnutar)
-    for _am_tar in tar gnutar gtar;
-    do
-      AM_RUN_LOG([$_am_tar --version]) && break
-    done
-    am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
-    am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
-    am__untar="$_am_tar -xf -"
-    ;;
-  plaintar)
-    # Must skip GNU tar: if it does not support --format= it doesn't create
-    # ustar tarball either.
-    (tar --version) >/dev/null 2>&1 && continue
-    am__tar='tar chf - "$$tardir"'
-    am__tar_='tar chf - "$tardir"'
-    am__untar='tar xf -'
-    ;;
-  pax)
-    am__tar='pax -L -x $1 -w "$$tardir"'
-    am__tar_='pax -L -x $1 -w "$tardir"'
-    am__untar='pax -r'
-    ;;
-  cpio)
-    am__tar='find "$$tardir" -print | cpio -o -H $1 -L'
-    am__tar_='find "$tardir" -print | cpio -o -H $1 -L'
-    am__untar='cpio -i -H $1 -d'
-    ;;
-  none)
-    am__tar=false
-    am__tar_=false
-    am__untar=false
-    ;;
-  esac
-
-  # If the value was cached, stop now.  We just wanted to have am__tar
-  # and am__untar set.
-  test -n "${am_cv_prog_tar_$1}" && break
-
-  # tar/untar a dummy directory, and stop if the command works
-  rm -rf conftest.dir
-  mkdir conftest.dir
-  echo GrepMe > conftest.dir/file
-  AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
-  rm -rf conftest.dir
-  if test -s conftest.tar; then
-    AM_RUN_LOG([$am__untar <conftest.tar])
-    grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
-  fi
-done
-rm -rf conftest.dir
-
-AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
-AC_MSG_RESULT([$am_cv_prog_tar_$1])])
-AC_SUBST([am__tar])
-AC_SUBST([am__untar])
-]) # _AM_PROG_TAR
-
diff --git a/graphics/epix/active_screen.cc b/graphics/epix/active_screen.cc
deleted file mode 100644
index 05fafc804e..0000000000
--- a/graphics/epix/active_screen.cc
+++ /dev/null
@@ -1,80 +0,0 @@
-/* 
- * active_screen.cc -- ePiX screen_broker class
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.11
- * Last Change: August 15, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#include "screen.h"
-#include "picture_data.h"
-#include "picture.h"
-#include "active_screen.h"
-
-namespace ePiX {
-
-  screen_broker::screen_broker()
-  {
-    m_screens.push_front(&the_picture().the_canvas);
-  }
-
-  screen* screen_broker::active() const
-  {
-    return *(m_screens.begin());
-  }
-
-  void screen_broker::push(screen& scr)
-  {
-    m_screens.push_front(&scr);
-  }
-
-  screen* screen_broker::pop()
-  {
-    std::list<screen*>::const_iterator sp(m_screens.begin());
-
-    screen* val(*sp);
-
-    if (++sp != m_screens.end())
-      m_screens.pop_front();
-
-    return val;
-  }
-
-
-  // global functions
-  screen_broker& the_screen_stack()
-  {
-    static screen_broker* the_screen_broker(new screen_broker());
-    return *the_screen_broker;
-  }
-
-  screen* active_screen()
-  {
-    return the_screen_stack().active();
-  }
-} // end of namespace
diff --git a/graphics/epix/active_screen.h b/graphics/epix/active_screen.h
deleted file mode 100644
index 79bb909063..0000000000
--- a/graphics/epix/active_screen.h
+++ /dev/null
@@ -1,72 +0,0 @@
-/* 
- * active_screen.h -- ePiX screen_broker class
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.11
- * Last Change: August 15, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-/*
- * A screen_broker is a simple stack of screen*, permitting client code
- * to activate a screen then restore the state later. No attempt is made
- * to handle concurrent threads, but the global "deactivate" function
- * in picture.h prints a warning if its argument is not active.
- */
-#ifndef EPIX_ACTIVE_SCREEN
-#define EPIX_ACTIVE_SCREEN
-
-#include <list>
-
-namespace ePiX {
-
-  class screen;
-
-  class screen_broker {
-  public:
-    screen_broker();
-
-    // no need for destructor; we don't manage resources
-
-    screen* active() const;
-    void push(screen&);
-    screen* pop();
-
-  private:
-    std::list<screen*> m_screens;
-
-    // forbid copying
-    screen_broker(const screen_broker&);
-    screen_broker& operator= (const screen_broker&);
-  };
-
-  screen_broker& the_screen_stack();
-  screen* active_screen();
-} // end of namespace
-
-#endif /* EPIX_ACTIVE_SCREEN */
diff --git a/graphics/epix/affine.cc b/graphics/epix/affine.cc
deleted file mode 100644
index cc28e40cbf..0000000000
--- a/graphics/epix/affine.cc
+++ /dev/null
@@ -1,300 +0,0 @@
-/* 
- * affine.cc -- ePiX::affine class
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.21
- * Last Change: September 23, 2007
- *
- * 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- *
- *
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#include <cmath>
-
-#include "errors.h"
-#include "constants.h"
-
-#include "pairs.h"
-#include "triples.h"
-#include "functions.h"
-
-#include "affine.h"
-
-namespace ePiX {
-
-  // rotate/reflect about (0,0)
-  static pair __epix_rotate(double Cs, double Sn, const pair& arg)
-  {
-    double x(arg.x1()), y(arg.x2());
-    return pair(Cs*x - Sn*y, Sn*x + Cs*y);
-  }
-
-  static pair __epix_reflect(double Cs, double Sn, const pair& arg)
-  {
-    double x(arg.x1()), y(arg.x2());
-    return pair(Cs*x + Sn*y, Sn*x - Cs*y);
-  }
-
-  // identity
-  affine::affine()
-    : m_00(0,0), m_10(1,0), m_01(0,1) { }
-
-  // images of (1,0), (0,1), (0,0)
-  affine::affine(const pair& pr1, const pair& pr2, const pair& loc)
-    : m_00(loc), m_10(pr1), m_01(pr2) { }
-
-  affine::affine(const P& pr1, const P& pr2, const P& loc)
-    : m_00(loc.x1(), loc.x2()),
-      m_10(pr1.x1(), pr1.x2()),
-      m_01(pr2.x1(), pr2.x2()) { }
-
-  affine&   affine::shift(const pair& arg)
-  {
-    m_00 += arg;
-    m_10 += arg;
-    m_01 += arg;
-
-    return *this;
-  }
-
-  affine&   affine::shift(const P& arg)
-  {
-    return shift(pair(arg.x1(), arg.x2()));
-  }
-
-  affine&  affine::rotate(double theta, const pair& ctr)
-  {
-    const double Cs(Cos(theta));
-    const double Sn(Sin(theta));
-
-    // shift
-    m_00 -= ctr;
-    m_10 -= ctr;
-    m_01 -= ctr;
-
-    // rotate about origin and shift back
-    m_00 = __epix_rotate(Cs, Sn, m_00) + ctr;
-    m_10 = __epix_rotate(Cs, Sn, m_10) + ctr;
-    m_01 = __epix_rotate(Cs, Sn, m_01) + ctr;
-
-    return *this;
-  }
-
-  affine&  affine::rotate(double theta, const P& ctr)
-  {
-    return rotate(theta, pair(ctr.x1(), ctr.x2()));
-  }
-
-  affine& affine::reflect(double theta, const pair& ctr)
-  {
-    const double Cs(Cos(2*theta));
-    const double Sn(Sin(2*theta));
-
-    // shift
-    m_00 -= ctr;
-    m_10 -= ctr;
-    m_01 -= ctr;
-
-    // reflect about origin and shift back
-    m_00 = __epix_reflect(Cs, Sn, m_00) + ctr;
-    m_10 = __epix_reflect(Cs, Sn, m_10) + ctr;
-    m_01 = __epix_reflect(Cs, Sn, m_01) + ctr;
-
-    return *this;
-  }
-
-  affine&  affine::reflect(double theta, const P& ctr)
-  {
-    return reflect(theta, pair(ctr.x1(), ctr.x2()));
-  }
-
-  affine& affine::h_scale(double sc, const pair& ctr)
-  {
-    m_00 -= ctr;
-    m_10 -= ctr;
-    m_01 -= ctr;
-
-    const pair scale(sc, 1);
-
-    m_00 = (m_00 & scale) + ctr;
-    m_10 = (m_10 & scale) + ctr;
-    m_01 = (m_01 & scale) + ctr;
-
-    return *this;
-  }
-
-  affine&  affine::h_scale(double sc, const P& ctr)
-  {
-    return h_scale(sc, pair(ctr.x1(), ctr.x2()));
-  }
-
-  affine& affine::v_scale(double sc, const pair& ctr)
-  {
-    // shift
-    m_00 -= ctr;
-    m_10 -= ctr;
-    m_01 -= ctr;
-
-    const pair scale(1, sc);
-
-    m_00 = (m_00 & scale) + ctr;
-    m_10 = (m_10 & scale) + ctr;
-    m_01 = (m_01 & scale) + ctr;
-
-    return *this;
-  }
-
-  affine&  affine::v_scale(double sc, const P& ctr)
-  {
-    return v_scale(sc, pair(ctr.x1(), ctr.x2()));
-  }
-
-  affine&   affine::scale(double sc, const pair& ctr)
-  {
-    // shift
-    m_00 -= ctr;
-    m_10 -= ctr;
-    m_01 -= ctr;
-
-    const pair scale(sc, sc);
-
-    m_00 = (m_00 & scale) + ctr;
-    m_10 = (m_10 & scale) + ctr;
-    m_01 = (m_01 & scale) + ctr;
-
-    return *this;
-  }
-
-  affine&  affine::scale(double sc, const P& ctr)
-  {
-    return scale(sc, pair(ctr.x1(), ctr.x2()));
-  }
-
-
-  affine&  affine::h_shear(double sc, const pair& ctr)
-  {
-    // shift
-    m_00 -= ctr;
-    m_10 -= ctr;
-    m_01 -= ctr;
-
-    m_00 += pair(sc*m_00.x2(), 0) + ctr;
-    m_10 += pair(sc*m_10.x2(), 0) + ctr;
-    m_01 += pair(sc*m_01.x2(), 0) + ctr;
-
-    return *this;
-  }
-
-  affine&  affine::h_shear(double sc, const P& ctr)
-  {
-    return h_shear(sc, pair(ctr.x1(), ctr.x2()));
-  }
-
-  affine&  affine::v_shear(double sc, const pair& ctr)
-  {
-    // shift
-    m_00 -= ctr;
-    m_10 -= ctr;
-    m_01 -= ctr;
-
-    m_00 += pair(0, sc*m_00.x1()) + ctr;
-    m_10 += pair(0, sc*m_10.x1()) + ctr;
-    m_01 += pair(0, sc*m_01.x1()) + ctr;
-
-    return *this;
-  }
-
-  affine&  affine::v_shear(double sc, const P& ctr)
-  {
-    return v_shear(sc, pair(ctr.x1(), ctr.x2()));
-  }
-
-  affine& affine::postcomp(const affine& af)
-  {
-    m_00 = af(m_00);
-    m_10 = af(m_10);
-    m_01 = af(m_01);
-
-    return *this;
-  }
-
-  affine& affine::invert()
-  {
-    m_10 -= m_00;
-    m_01 -= m_00;
-
-    const double denom(m_10.x1()*m_01.x2() - m_10.x2()*m_01.x1());
-
-    if (fabs(denom) < EPIX_EPSILON)
-      {
-	// restore
-	m_10 += m_00;
-	m_01 += m_00;
-	epix_warning("affine not invertible, no action");
-	return *this;
-      }
-
-    // else compute inverse entries
-    const double a11( m_01.x2()/denom);
-    const double a12(-m_01.x1()/denom);
-    const double a21(-m_10.x2()/denom);
-    const double a22( m_10.x1()/denom);
-
-    pair tmp_00(-a11*m_00.x1() + a12*m_00.x2(),
-		 a21*m_00.x1() - a22*m_00.x2());
-
-    m_00 = tmp_00;
-    m_10 = m_00 + pair(a11, a21);
-    m_01 = m_00 + pair(a12, a22);
-
-    return *this;
-  }
-
-
-  // evaluation
-  pair affine::operator() (const pair& arg) const
-  {
-    return m_00 + arg.x1()*(m_10 - m_00) + arg.x2()*(m_01 - m_00);
-  }
-
-  pair affine::operator() (const P& arg) const
-  {
-    return m_00 + arg.x1()*(m_10 - m_00) + arg.x2()*(m_01 - m_00);
-  }
-
-  // pre-composition
-  affine affine::operator() (const affine& af) const
-  {
-    return affine(this->operator()(af.m_10),
-		  this->operator()(af.m_01),
-		  this->operator()(af.m_00));
-  }
-
-  bool affine::reverses_orientation() const
-  {
-    const pair col1(m_10 - m_00);
-    const pair col2(m_01 - m_00);
-
-    return (col1.x1()*col2.x2() - col1.x2()*col2.x1() < -EPIX_EPSILON);
-  }
-} // end of namespace
diff --git a/graphics/epix/affine.h b/graphics/epix/affine.h
deleted file mode 100644
index a56758e550..0000000000
--- a/graphics/epix/affine.h
+++ /dev/null
@@ -1,114 +0,0 @@
-/* 
- * affine.h -- ePiX::affine class (affine screen maps)
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.21
- * Last Change: September 23, 2007
- *
- * 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- *
- *
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-/*
- * An affine map is constructed from the images of the "standard
- * triple" (0,0), (1,0), and (0,1).
- *
- * An affine map may be (post)-composed with translation, rotation,
- * reflection, scaling along either or both coordinate axes, shearing,
- * and may be inverted. An optional pair argument, defaulting to
- * (0,0), gives the center of the operation (if appropriate).
- *
- * An affine map may be post-composed via member function, and
- * pre-composed with operator syntax. The evaluation operator
- * returns the image of the argument.
- */
-
-#ifndef EPIX_AFFINE
-#define EPIX_AFFINE
-
-#include "pairs.h"
-#include "triples.h"
-
-namespace ePiX {
-
-  class affine {
-  public:
-    // the identity map
-    affine();
-
-    // images of (1,0), (0,1), (0,0)
-    affine(const pair&, const pair&, const pair& loc=pair(0,0));
-    affine(const P&, const P&, const P& loc=P(0,0));
-
-    // post-operations
-    // translate by arg
-    affine&   shift(const pair& arg);
-    affine&   shift(const P& arg);
-
-    // rotate by theta about ctr
-    affine&  rotate(double theta, const pair& ctr = pair(0,0));
-    affine&  rotate(double theta, const P& ctr);
-
-    // reflect in angle-theta line through ctr
-    affine& reflect(double theta, const pair& ctr = pair(0,0));
-    affine& reflect(double theta, const P& ctr);
-
-    // scale coord direction(s) fixing ctr
-    affine& h_scale(double, const pair& ctr=pair(0,0));
-    affine& v_scale(double, const pair& ctr=pair(0,0));
-    affine&   scale(double, const pair& ctr=pair(0,0));
-
-    affine& h_scale(double, const P& ctr);
-    affine& v_scale(double, const P& ctr);
-    affine&   scale(double, const P& ctr);
-
-    // shear, fixing ctr
-    affine& h_shear(double, const pair& ctr=pair(0,0));
-    affine& v_shear(double, const pair& ctr=pair(0,0));
-
-    affine& h_shear(double, const P& ctr);
-    affine& v_shear(double, const P& ctr);
-
-    // post-compose
-    affine& postcomp(const affine&);
-
-    affine& invert();
-
-    // evaluation
-    pair operator() (const pair&) const;
-    pair operator() (const P&) const;
-
-    // pre-compose
-    affine operator() (const affine&) const;
-
-    bool reverses_orientation() const;
-
-  private:
-    pair m_00;
-    pair m_10;
-    pair m_01;
-  };
-} // end of ePiX namespace
-
-#endif /* EPIX_AFFINE */
diff --git a/graphics/epix/angle_units.cc b/graphics/epix/angle_units.cc
deleted file mode 100644
index cbc8973703..0000000000
--- a/graphics/epix/angle_units.cc
+++ /dev/null
@@ -1,94 +0,0 @@
-/* 
- * angle_units.cc -- Implementation of ePiX's angular units
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.22
- * Last Change: September 24, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include "constants.h"
-#include "angle_units.h"
-
-namespace ePiX {
-
-  angle_state::angle_state()
-    : m_rad_per_unit(1.0),
-      m_unit_per_deg(PI_180),
-      m_rev_per_unit(1.0/TWO_PI) { }
-
-  void angle_state::set_radians_mode()
-  {
-    m_rad_per_unit = 1.0;
-    m_unit_per_deg = PI_180;
-    m_rev_per_unit = 1.0/TWO_PI;
-  }
-
-  void angle_state::set_degrees_mode()
-  {
-    m_rad_per_unit = PI_180;
-    m_unit_per_deg = 1.0;
-    m_rev_per_unit = 1.0/360;
-  }
-
-  void angle_state::set_revolutions_mode()
-  {
-    m_rad_per_unit = TWO_PI;
-    m_unit_per_deg = 1.0/360;
-    m_rev_per_unit = 1.0;
-  }
-
-
-  double angle_state::to_radians(double t)
-  {
-    return t *= m_rad_per_unit;
-  }
-
-  // result lies in (-180, 180]
-  double angle_state::to_degrees(double t)
-  {
-    t *= m_rev_per_unit;
-
-    t -= 0.5;     // shift half a turn
-    t -= ceil(t); // map to (-1,0]
-    t += 0.5;     // shift to (-0.5, 0.5]
-
-    return t *= 360.0;
-  }
-
-  double angle_state::from_degrees(double t)
-  {
-    return t *= m_unit_per_deg;
-  }
-
-  angle_state& the_angle_style()
-  {
-    static angle_state* the_angle_state(new angle_state());
-    return *the_angle_state;
-  }
-} // end of namespace
diff --git a/graphics/epix/angle_units.h b/graphics/epix/angle_units.h
deleted file mode 100644
index b250b02d51..0000000000
--- a/graphics/epix/angle_units.h
+++ /dev/null
@@ -1,77 +0,0 @@
-/* 
- * angle_units.h -- Implementation of ePiX's angular units
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.22
- * Last Change: September 24, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-/*
- * This file contains:
- *
- *  [] angle_state
- *     Angular mode (radians, degrees, revolutions)
- *
- * The class in this file implements backend for user-level global
- * functions defined in state.h. This header is not part of epix.h.
- */
-#ifndef EPIX_ANGLE_UNITS
-#define EPIX_ANGLE_UNITS
-
-#include <cmath>
-
-namespace ePiX {
-
-  class angle_state {
-  public:
-    angle_state();
-
-    void set_radians_mode();
-    void set_degrees_mode();
-    void set_revolutions_mode();
-
-    // convert to radians, for angle-sensitive trig functions
-    double to_radians(double t);
-
-    // current angle units to/from degrees, for label_style
-    double to_degrees(double t);
-    double from_degrees(double t);
-
-  private:
-    // store state redundantly; small overhead, saves conversion
-    double m_rad_per_unit;
-    double m_unit_per_deg;
-    double m_rev_per_unit;
-  }; // end of class angle_state
-
-  angle_state& the_angle_style();
-
-} // end of namespace
-
-#endif /* EPIX_ANGLE_UNITS */
diff --git a/graphics/epix/arrow_data.cc b/graphics/epix/arrow_data.cc
deleted file mode 100644
index 2c50b0f8bc..0000000000
--- a/graphics/epix/arrow_data.cc
+++ /dev/null
@@ -1,130 +0,0 @@
-/* 
- * arrow_data.cc -- ePiX arrow class
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.2.0-2
- * Last Change: September 26, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include <list>
-#include <cmath>
-
-#include "triples.h"
-#include "functions.h"
-
-#include "camera.h"
-
-#include "edge_data.h"
-#include "path_data.h"
-#include "clipping.h"
-
-#include "arrow_style.h"
-#include "pen_data.h"
-#include "paint_style.h"
-
-#include "halfspace.h"
-#include "pen_line.h"
-#include "pen_arrow.h"
-
-#include "screen_data.h"
-#include "screen.h"
-#include "active_screen.h"
-
-#include "arrow_data.h"
-
-namespace ePiX {
-
-  arrow_data::arrow_data(const std::vector<P>& pv, const P& base, const P& tip,
-			 double scale)
-    : m_base(base), m_tip(tip), m_scale(scale),
-      m_head_seen(!the_clip_box().clips(m_tip))
-  {
-    for (unsigned int i=0; i<pv.size()-1; ++i)
-      m_shaft.push_back(edge3d(pv.at(i), pv.at(i+1), true));
-
-    the_clip_box().clip_path(m_shaft);
-  }
-
-  arrow_data& arrow_data::clip_to(const halfspace& knife)
-  {
-    knife.clip_path(m_shaft);
-    if (knife.clips(m_tip))
-      m_head_seen = false;
-
-    return *this;
-  }
-
-
-  void arrow_data::photo(screen& scr, const Camera& mycam,
-			 const pen_data& line, const pen_data& under) const
-  {
-    arrow_data tmp_data(*this);
-    if (mycam.needs_clip())
-      tmp_data.clip_to(mycam.clip_plane());
-
-    std::list<edge2d> edges;
-    for (std::list<edge3d>::const_iterator p=tmp_data.m_shaft.begin();
-	 p != tmp_data.m_shaft.end(); ++p)
-      {
-	edge2d tmp(mycam((*p).tail()), mycam((*p).head()), (*p).is_seen());
-
-	if (!tmp.is_null()) // endpoints not equal
-	  edges.push_back(tmp);
-      }
-
-    // draw shaft
-    scr.m_screen->add_tile(pen_line(line.seen_through(mycam),
-				    under.seen_through(mycam), edges));
-
-    // and arrowhead
-    if (m_head_seen)
-      {
-	const P dir(m_tip-m_base);
-	const P to_cam(mycam.viewpt()-m_base);
-
-	const double sin_th(norm(dir*to_cam)/(norm(dir)*norm(to_cam)));
-
-	scr.m_screen->add_tile(pen_arrow(mycam(m_base), mycam(m_tip),
-					 line.seen_through(mycam),
-					 under.seen_through(mycam),
-					 m_scale, sin_th, m_head_seen));
-      }
-  }
-
-  void arrow_data::draw() const
-  {
-    photo(*active_screen(), cam(),
-	  the_paint_style().line_pen(), the_paint_style().base_pen());
-  }
-
-  void arrow_data::draw(const pen_data& p1, const pen_data& p2) const
-  {
-    photo(*active_screen(), cam(), p1, p2);
-  }
-} // end of namespace
diff --git a/graphics/epix/arrow_data.h b/graphics/epix/arrow_data.h
deleted file mode 100644
index 5840cd35d3..0000000000
--- a/graphics/epix/arrow_data.h
+++ /dev/null
@@ -1,77 +0,0 @@
-/* 
- * arrow_data.h -- ePiX implementation class for arrows
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.8
- * Last Change: July 19, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#ifndef EPIX_ARROW_DATA
-#define EPIX_ARROW_DATA
-
-#include <list>
-#include <vector>
-
-#include "triples.h"
-#include "edge_data.h"
-
-namespace ePiX {
-
-  class Camera;
-  class Color;
-  class halfspace;
-  class pen_data;
-  class screen;
-
-  // sequence of vertices
-  class arrow_data {
-  public:
-    arrow_data(const std::vector<P>&, const P& base, const P& tip,
-	       double scale=1);
-
-    arrow_data& clip();
-    arrow_data& clip_to(const halfspace&);
-
-    void photo(screen&, const Camera&, const pen_data&, const pen_data&) const;
-
-    void draw() const;
-    void draw(const pen_data&, const pen_data&) const;
-
-  private:
-    // head data
-    P m_base, m_tip;
-    double m_scale; // size multiplier
-    bool m_head_seen;
-
-    // shaft
-    std::list<edge3d> m_shaft;
-  }; // end of class arrow_data
-
-} // end of namespace
-
-#endif /* EPIX_ARROW_DATA */
diff --git a/graphics/epix/arrow_style.cc b/graphics/epix/arrow_style.cc
deleted file mode 100644
index 1397545909..0000000000
--- a/graphics/epix/arrow_style.cc
+++ /dev/null
@@ -1,103 +0,0 @@
-/* 
- * arrow_atyle.cc -- ePiX's arrowhead parameters
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.15
- * Last Change: September 08, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-/*
- * The class in this file implements backend for user-level global
- * functions defined in state.h. This header is not part of epix.h.
- */
-#include <cmath>
-
-#include "constants.h"
-#include "functions.h" // for snip_to
-#include "arrow_style.h"
-
-namespace ePiX {
-
-  arrowhead_state::arrowhead_state()
-    : m_width(0.5*AVG_AWIDTH), m_ratio(AVG_ARATIO),
-      m_inset(AVG_INSET), m_fill(false) { }
-
-  // set
-  arrowhead_state& arrowhead_state::width(double w)
-  {
-    m_width = fabs(0.5*snip_to(w, MIN_AWIDTH, MAX_AWIDTH));
-    return *this;
-  }
-
-  arrowhead_state& arrowhead_state::ratio(double r)
-  {
-    m_ratio = fabs(snip_to(r, MIN_ARATIO, MAX_ARATIO));
-    return *this;
-  }
-
-  arrowhead_state& arrowhead_state::inset(double arg)
-  {
-    m_inset = snip_to(arg, MIN_INSET, MAX_INSET);
-    return *this;
-  }
-
-  arrowhead_state& arrowhead_state::fill(bool fill)
-  {
-    m_fill = fill;
-    return *this;
-  }
-
-
-  // get
-  double arrowhead_state::width() const
-  {
-    return m_width;
-  }
-
-  double arrowhead_state::ratio() const
-  {
-    return m_ratio;
-  }
-
-  double arrowhead_state::inset() const
-  {
-    return m_inset;
-  }
-
-  bool arrowhead_state::fill() const
-  {
-    return m_fill;
-  }
-
-  arrowhead_state& the_arrowhead_style()
-  {
-    static arrowhead_state* the_arrowhead_state(new arrowhead_state());
-    return *the_arrowhead_state;
-  }
-} // end of namespace
diff --git a/graphics/epix/arrow_style.h b/graphics/epix/arrow_style.h
deleted file mode 100644
index 0f9691516e..0000000000
--- a/graphics/epix/arrow_style.h
+++ /dev/null
@@ -1,76 +0,0 @@
-/* 
- * arrow_style.h -- ePiX's arrowhead parameters
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.15
- * Last Change: September 08, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-/*
- * The class in this file implements backend for user-level global
- * functions defined in state.h. This header is not part of epix.h.
- */
-#ifndef EPIX_ARROW_STYLE
-#define EPIX_ARROW_STYLE
-
-namespace ePiX {
-
-  // arrowhead parameters
-  // Magic numbers: initialization constants
-  class arrowhead_state {
-  public:
-    arrowhead_state();
-
-    // set
-    arrowhead_state& width(double w);
-    arrowhead_state& ratio(double r);
-    arrowhead_state& inset(double arg);
-
-    arrowhead_state& fill(bool);
-
-    // get
-    double width() const;
-    double ratio() const;
-    double inset() const;
-
-    bool   fill() const;
-
-  private:
-    double m_width; // Half-width of arrowheads in pt
-    double m_ratio; // 2*Length/width ratio of arrowheads
-    double m_inset; // Base indentation (frac of width*ratio)
-
-    bool   m_fill;
-  }; // end of class arrowhead_state
-
-  arrowhead_state& the_arrowhead_style();
-
-} // end of namespace
-
-#endif /* EPIX_ARROW_STYLE */
diff --git a/graphics/epix/axis.cc b/graphics/epix/axis.cc
deleted file mode 100644
index ed86be7ee3..0000000000
--- a/graphics/epix/axis.cc
+++ /dev/null
@@ -1,925 +0,0 @@
-/* 
- * axis.cc -- ePiX axis class and global compatibility functions
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.18
- * Last Change: September 18, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#include <cmath>
-#include <sstream>
-
-#include "errors.h"
-
-#include "constants.h"
-#include "triples.h"
-
-#include "pairs.h"
-#include "frac.h"
-#include "functions.h"
-
-#include "length.h"
-#include "picture.h"
-
-#include "camera.h"
-
-#include "screen.h"
-#include "active_screen.h"
-#include "curves.h"
-
-#include "label_data.h"
-
-#include "markers.h"
-#include "axis.h"
-
-namespace ePiX {
-
-  // functions to get axis label from position
-  double __epix_coord1(const P&);
-  double __epix_coord2(const P&);
-  double __epix_coord3(const P&);
-
-  // string representations of double
-  std::string __epix_coord_as_double(double x, unsigned int digits,
-				     unsigned int base);
-  std::string __epix_coord_as_frac(double x, unsigned int digits,
-				   unsigned int base);
-  std::string __epix_coord_as_trig_frac(double x, unsigned int digits,
-					unsigned int base);
-  std::string __epix_coord_as_log(double x, unsigned int digits,
-				  unsigned int base);
-  std::string __epix_coord_as_log_sci(double x, unsigned int digits,
-				  unsigned int base);
-  std::string __epix_coord_as_sci(double x, unsigned int digits,
-				  unsigned int base);
-
-  //// Member functions ////
-  // Constructor automatically selects coordinate function from endpoints
-  axis::axis(const P& tail, const P& head, unsigned int n,
-	     const P& offset, epix_label_posn POSN)
-    : m_tail(tail), m_head(head), m_major_segs(n), m_minor_segs(n),
-      m_tick_ratio(0.5), m_align_ticks(c),
-      m_offset(offset), m_align_labels(POSN),
-      m_log_base(10), m_log(false), m_precision(DEF_PRECISION),
-      m_coord(__epix_coord1), m_rep(__epix_coord_as_double)
-  {
-    m_log_tags.insert(1);
-    int count(fabs(head.x1() - tail.x1()) < EPIX_EPSILON ? 0 : 1);
-    if (EPIX_EPSILON < fabs(head.x2() - tail.x2()))
-      {
-	++count;
-	m_coord = __epix_coord2;
-      }
-
-    if (EPIX_EPSILON < fabs(head.x3() - tail.x3()))
-      {
-	++count;
-	m_coord = __epix_coord3;
-      }
-
-    if (1 < count)
-      epix_warning("Axis not parallel to a Cartesian axis");
-
-    else if (count == 0)
-      epix_warning("Degenerate coordinate axis");
-  }
-
-
-  axis& axis::frac()
-  {
-    m_rep = __epix_coord_as_frac;
-    return *this;
-  }
-
-  axis& axis::trig()
-  {
-    m_rep = __epix_coord_as_trig_frac;
-    m_log = false;
-
-    return *this;
-  }
-
-  axis& axis::sci()
-  {
-    if (m_log)
-      m_rep = __epix_coord_as_log_sci;
-    else
-      m_rep = __epix_coord_as_sci;
-    return *this;
-  }
-
-  // f(x, precision, base) returns a string representing x
-  axis& axis::label_rep(std::string f(double, unsigned int, unsigned int))
-  {
-    m_rep = f;
-    return *this;
-  }
-
-  axis& axis::unmark(double arg)
-  {
-    m_omitted.insert(arg);
-    return *this;
-  }
-
-  axis& axis::log(unsigned int base)
-  {
-    if (m_rep == __epix_coord_as_sci) // preserve sci notation
-      m_rep = __epix_coord_as_log_sci;
-    else
-      m_rep = __epix_coord_as_log;
-
-    if (2 <= base && base <= MAX_LOG_BASE)
-      m_log_base = base;
-    else
-      epix_warning("axis::log base out of range, ignoring");
-
-    m_log = true;
-
-    return *this;
-  }
-
-  // add logarithmic labels
-  axis& axis::tag(double arg)
-  {
-    if (0 < arg && 2 < m_log_base)
-      {
-	int k((int) ceil(-std::log(arg)/std::log((double)m_log_base)));
-
-	// arg != b^-k
-	if (k == (int) floor(1 - std::log(arg)/std::log((double)m_log_base)))
-	  m_log_tags.insert(arg*pow(m_log_base, k));
-      }
-
-    return *this;
-  }
-
-  axis& axis::tag235()
-  {
-    if (m_log_base == 10)
-      {
-	m_log_tags.insert(2);
-	m_log_tags.insert(3);
-	m_log_tags.insert(5);
-      }
-
-    return *this;
-  }
-
-  axis& axis::tags()
-  {
-    for (unsigned int i=1; i<m_log_base; ++i)
-      m_log_tags.insert(i);
-
-    return *this;
-  }
-
-  axis& axis::untag(double arg)
-  {
-    m_log_tags.erase(arg);
-    return *this;
-  }
-
-  axis& axis::untag()
-  {
-    m_log_tags.clear();
-    return *this;
-  }
-
-  axis& axis::align_labels(epix_label_posn POSN)
-  {
-    m_align_labels = POSN;
-    return *this;
-  }
-
-  axis& axis::align(epix_label_posn POSN)
-  {
-    m_align_ticks = POSN;
-    return *this;
-  }
-
-
-  // number of minor ticks per segment
-  axis& axis::subdivide(unsigned int n)
-  {
-    m_minor_segs = m_major_segs*((unsigned int) snip_to(n, 1, MAX_LOG_BASE));
-    return *this;
-  }
-
-  // set tick length; printed size governed by MIN/MAX_TICK, but 0 significant
-  axis& axis::tick_ratio(double ratio)
-  {
-    m_tick_ratio = snip_to(ratio, 0, 1);
-    return *this;
-  }
-
-
-  // set precision for printing axis labels in decimal
-  axis& axis::precision(unsigned int digits)
-  {
-    if (digits == 0)
-      m_precision = DEF_PRECISION;
-
-    else
-      m_precision = (unsigned int) min(digits, MAX_PRECISION);
-
-    return *this;
-  }
-
-  void axis::draw_ticks() const
-  {
-    const P major_step((1.0/m_major_segs)*(m_head - m_tail));
-
-    const pair screen_dir(cam()(m_head) - cam()(m_tail));
-
-    if (norm(screen_dir) < EPIX_EPSILON) // poke in the eye
-      return;
-
-    // else, are we closer to horiz or vert?
-    bool nearly_horiz(fabs(screen_dir.x2()) < fabs(screen_dir.x1()));
-
-    // axis
-    line(m_tail, m_head);
-
-    // major ticks
-    for (unsigned int i=0; i <= m_major_segs; ++i)
-      {
-	if (nearly_horiz)
-	  h_axis_tick(m_tail + i*major_step, m_align_ticks);
-
-	else
-	  v_axis_tick(m_tail + i*major_step, m_align_ticks);
-      }
-
-    // Cartesian minor ticks
-    if (!m_log && m_tick_ratio != 0 && m_major_segs != m_minor_segs)
-      {
-	// get tick size
-	const double old_tick_len(the_mark_size().tick_size());
-
-	the_mark_size().tick_size(m_tick_ratio*old_tick_len);
-	const P minor_step((1.0/m_minor_segs)*(m_head - m_tail));
-
-	for (unsigned int i=0; i <= m_minor_segs; ++i)
-	  {
-	    if (nearly_horiz)
-	      h_axis_tick(m_tail + i*minor_step, m_align_ticks);
-
-	    else
-	      v_axis_tick(m_tail + i*minor_step, m_align_ticks);
-	  }
-
-	the_mark_size().tick_size(old_tick_len); // restore state
-      }
-
-    // logarithmic minor ticks
-    else if (m_log && m_tick_ratio != 0)
-      {
-	// get tick size
-	const double old_tick_len(the_mark_size().tick_size());
-
-	the_mark_size().tick_size(m_tick_ratio*old_tick_len);
-
-	const double denom(std::log((double)m_log_base));
-
-	for (unsigned int i=0; i < m_major_segs; ++i)
-	  for (unsigned int j=1; j<m_log_base; ++j)
-	    {
-	      if (nearly_horiz)
-		h_axis_tick(m_tail + (i+std::log((double)j)/denom)*major_step,
-			    m_align_ticks);
-
-	      else
-		v_axis_tick(m_tail + (i+std::log((double)j)/denom)*major_step,
-			    m_align_ticks);
-	    }
-
-	the_mark_size().tick_size(old_tick_len); // restore state
-      }
-  }
-
-  void axis::draw_labels() const
-  {
-    const P major_step((1.0/m_major_segs)*(m_head - m_tail));
-
-    if (!m_log)
-      for (unsigned int i=0; i <= m_major_segs; ++i)
-	{
-	  const P loc(m_tail + i*major_step);
-	  const double tmp_lbl(m_coord(loc));
-	  if (m_omitted.find(tmp_lbl) != m_omitted.end()) // omit marked labels
-	    continue;
-
-	  // else
-	  label_data mk(loc, m_offset,
-			m_rep(tmp_lbl, m_precision, m_log_base));
-
-	  mk.align_to(m_align_labels).draw();
-	}
-
-    else if (2 < m_log_base) // m_log
-      {
-	const double denom(std::log((double)m_log_base));
-
-	for (unsigned int i=0; i < m_major_segs; ++i)
-	  for (std::set<double>::const_iterator tp=m_log_tags.begin();
-	       tp != m_log_tags.end(); ++tp)
-	    {
-	      double dx(std::log(*tp)/denom);
-	      const P posn(m_tail + (i + dx)*major_step);
-
-	      label_data mk(posn, m_offset,
-			    m_rep(m_coord(posn), m_precision, m_log_base));
-
-	      mk.align_to(m_align_labels).draw();
-	    }
-
-	// final label
-	label_data mk(m_head, m_offset,
-		      m_rep(m_coord(m_head), m_precision, m_log_base));
-
-	mk.align_to(m_align_labels).draw();
-      }
-  }
-
-  void axis::draw() const
-  {
-    draw_ticks();
-    draw_labels();
-  }
-
-
-  //// Misc utilities for global functions ////
-  // raw Cartesian coordinates
-  std::string __epix_axis_label(double x)
-  {
-    std::stringstream obuf;
-    obuf << "$" << x << "$";
-
-    return obuf.str();
-  }
-
-  std::string __epix_axis1_label(double x, double y)
-  {
-    return __epix_axis_label(x);
-  }
-
-  std::string __epix_axis2_label(double x, double y)
-  {
-    return __epix_axis_label(y);
-  }
-
-  // log coordinates
-  std::string __epix_log_label(double x, const unsigned int base)
-  {
-    std::stringstream obuf;
-
-    int N((int) ceil(x));
-
-    double k(pow(base, x - N));
-
-    //    obuf.precision(2);
-    obuf << "$";
-    if (k != 1.0)
-      {
-	k *= base;
-	N -= 1;
-	obuf << k << "\\times";
-      }
-
-    obuf << base << "^{" << N << "}$";
-
-    return obuf.str();
-  }
-
-  std::string __epix_log_axis1_label(double x, double y,
-				     const unsigned int base=10)
-  {
-    return __epix_log_label(x, base);
-  }
-
-  std::string __epix_log_axis2_label(double x, double y,
-				     const unsigned int base=10)
-  {
-    return __epix_log_label(y, base);
-  }
-
-  //// Global functions ////
-  // Draws n+1 equally-spaced axis labels between <tail> and <head>.
-  // Uses the string-valued function f to generate label text.
-  void __epix_axis_labels(const P& tail, const P& head, unsigned int n,
-			  const P& offset, epix_label_posn POSN,
-			  std::string f(double, double), bool masked)
-  {
-    const P step((1.0/n)*(head - tail));
-
-    // get mask color, if any
-    Color my_mask(masked ? the_label_style().mask_color() : Neutral());
-
-    if (masked && my_mask.is_unset())
-      my_mask = White();
-
-    for (unsigned int i=0; i<= n; ++i)
-      {
-	label_data mk(tail+i*step, offset, f);
-
-	mk.mask_color(my_mask).align_to(POSN).draw();
-      }
-  }
-
-
-  //// User-visible commands ////
-  // Not implemented with the axis class because masking behavior differs.
-  void h_axis_labels(const P& tail, const P& head, unsigned int n,
-		     const P& offset, epix_label_posn POSN)
-  {
-    __epix_axis_labels(tail, head, n, offset, POSN, __epix_axis1_label, false);
-  }
-
-  void v_axis_labels(const P& tail, const P& head, unsigned int n,
-		     const P& offset, epix_label_posn POSN)
-  {
-    __epix_axis_labels(tail, head, n, offset, POSN, __epix_axis2_label, false);
-  }
-
-
-  void h_axis_masklabels(const P& tail, const P& head, unsigned int n,
-			 const P& offset, epix_label_posn POSN)
-  {
-    __epix_axis_labels(tail, head, n, offset, POSN, __epix_axis1_label, true);
-  }
-
-  void v_axis_masklabels(const P& tail, const P& head, unsigned int n,
-			 const P& offset, epix_label_posn POSN)
-  {
-    __epix_axis_labels(tail, head, n, offset, POSN, __epix_axis2_label, true);
-  }
-
-
-  // automatic endpoints
-  void h_axis_labels(unsigned int n, const P& offset, epix_label_posn POSN)
-  {
-    __epix_axis_labels(P(active_screen()->h_min(), 0),
-		       P(active_screen()->h_max(), 0), n, offset, POSN,
-		       __epix_axis1_label, false);
-  }
-
-  void h_axis_masklabels(unsigned int n, const P& offset, epix_label_posn POSN)
-  {
-    __epix_axis_labels(P(active_screen()->h_min(), 0),
-		       P(active_screen()->h_max(), 0), n, offset, POSN,
-		       __epix_axis1_label, true);
-  }
-
-  void v_axis_labels(unsigned int n, const P& offset, epix_label_posn POSN)
-  {
-    __epix_axis_labels(P(0, active_screen()->v_min()),
-		       P(0, active_screen()->v_max()), n, offset, POSN,
-		       __epix_axis2_label, false);
-  }
-
-  void v_axis_masklabels(unsigned int n, const P& offset, epix_label_posn POSN)
-  {
-    __epix_axis_labels(P(0, active_screen()->v_min()),
-		       P(0, active_screen()->v_max()), n, offset, POSN,
-		       __epix_axis2_label, true);
-  }
-
-
-  // log axis labels
-  void __epix_log_axis_labels(const P& tail, const P& head, unsigned int n,
-			      const P& offset, epix_label_posn POSN,
-			      std::string f(double, double, unsigned int),
-			      bool masked, unsigned int base=10)
-  {
-    const P step((1.0/n)*(head - tail));
-
-    // get mask color, if any
-    Color my_mask(masked ? the_label_style().mask_color() : Neutral());
-
-    if (masked && my_mask.is_unset())
-      my_mask = White();
-
-    for (unsigned int i=0; i<= n; ++i)
-      {
-	P here(tail+i*step);
-	std::string text(f(here.x1(), here.x2(), base));
-
-	label_data mk(here, offset, text);
-
-	mk.mask_color(my_mask).align_to(POSN).draw();
-      }
-  }
-
-  // number of labels specified
-  void h_axis_log_labels(const P& tail, const P& head, unsigned int n,
-			 const P& offset, epix_label_posn POSN,
-			 unsigned int base)
-  {
-    __epix_log_axis_labels(tail, head, n, offset, POSN, 
-			   __epix_log_axis1_label, false, base);
-  }
-
-  void v_axis_log_labels(const P& tail, const P& head, unsigned int n,
-			 const P& offset, epix_label_posn POSN,
-			 unsigned int base)
-  {
-    __epix_log_axis_labels(tail, head, n, offset, POSN, 
-			   __epix_log_axis2_label, false, base);
-  }
-
-
-  // put labels at integer coordinates
-  void h_axis_log_labels(const P& tail, const P& head,
-			 const P& offset, epix_label_posn POSN,
-			 unsigned int base)
-  {
-    if (EPIX_EPSILON < (tail.x2() - head.x2()) ) // non-horizontal axis
-      return;
-
-    const double my_y(tail.x2());
-
-    // get integers in horiz interval
-    const int k_lo((int)  ceil(min(tail.x1(), head.x1())));
-    const int k_hi((int) floor(max(tail.x1(), head.x1())));
-
-    h_axis_log_labels(P(k_lo, my_y), P(k_hi, my_y), k_hi - k_lo,
-		      offset, POSN, base);
-  }
-
-  void v_axis_log_labels(const P& tail, const P& head,
-			 const P& offset, epix_label_posn POSN,
-			 unsigned int base)
-  {
-    if (EPIX_EPSILON < (tail.x1() - head.x1()) ) // non-vertical axis
-      return;
-
-    const double my_x(tail.x1());
-
-    // get integers in vert interval
-    const int k_lo((int)  ceil(min(tail.x2(), head.x2())));
-    const int k_hi((int) floor(max(tail.x2(), head.x2())));
-
-    v_axis_log_labels(P(my_x, k_lo), P(my_x, k_hi), k_hi - k_lo,
-		      offset, POSN, base);
-  }
-
-
-  //// masked versions
-  void h_axis_log_masklabels(const P& tail, const P& head, unsigned int n,
-			     const P& offset, epix_label_posn POSN,
-			     unsigned int base)
-  {
-    __epix_log_axis_labels(tail, head, n, offset, POSN, 
-			   __epix_log_axis1_label, true, base);
-  }
-
-  void v_axis_log_masklabels(const P& tail, const P& head, unsigned int n,
-			     const P& offset, epix_label_posn POSN,
-			     unsigned int base)
-  {
-    __epix_log_axis_labels(tail, head, n, offset, POSN, 
-			   __epix_log_axis2_label, true, base);
-  }
-
-
-  // put labels at integer coordinates
-  void h_axis_log_masklabels(const P& tail, const P& head,
-			     const P& offset, epix_label_posn POSN,
-			     unsigned int base)
-  {
-    if (EPIX_EPSILON < (tail.x2() - head.x2()) ) // non-horizontal axis
-      return;
-
-    const double my_y(tail.x2());
-
-    // get integers in horiz interval
-    const int k_lo((int)  ceil(min(tail.x1(), head.x1())));
-    const int k_hi((int) floor(max(tail.x1(), head.x1())));
-
-    h_axis_log_masklabels(P(k_lo, my_y), P(k_hi, my_y), k_hi - k_lo,
-			  offset, POSN, base);
-  }
-
-  void v_axis_log_masklabels(const P& tail, const P& head,
-			     const P& offset, epix_label_posn POSN,
-			     unsigned int base)
-  {
-    if (EPIX_EPSILON < (tail.x1() - head.x1()) ) // non-vertical axis
-      return;
-
-    const double my_x(tail.x1());
-
-    // get integers in vert interval
-    const int k_lo((int)  ceil(min(tail.x2(), head.x2())));
-    const int k_hi((int) floor(max(tail.x2(), head.x2())));
-
-    v_axis_log_masklabels(P(my_x, k_lo), P(my_x, k_hi), k_hi - k_lo,
-			  offset, POSN, base);
-  }
-
-
-  // Coordinate axes
-  void h_axis(const P& tail, const P& head, unsigned int n, epix_label_posn AL)
-  {
-    line(tail, head);
-
-    const P step((1.0/n)*(head - tail));
-
-    for (unsigned int i=0; i <= n; ++i)
-      h_axis_tick(tail + i*step, AL);
-  }
-
-  void v_axis(const P& tail, const P& head, unsigned int n, epix_label_posn AL)
-  {
-    line(tail, head);
-
-    const P step((1.0/n)*(head - tail));
-
-    for (unsigned int i=0; i <= n; ++i)
-      v_axis_tick(tail + i*step, AL);
-  }
-
-  // n+1 = #ticks, num_pts = #segments used to draw
-  void h_axis(unsigned int n, epix_label_posn AL)
-  {
-    h_axis(P(active_screen()->h_min(), 0),
-	   P(active_screen()->h_max(), 0), n, AL);
-  }
-
-  void v_axis(unsigned int n, epix_label_posn AL)
-  {
-    v_axis(P(0, active_screen()->v_min()),
-	   P(0, active_screen()->v_max()), n, AL);
-  }
-
-
-  void h_log_axis(const P& tail, const P& head,
-		  unsigned int segs, epix_label_posn AL, unsigned int base)
-  {
-    line(tail, head, 0, segs);
-
-    const P step((1.0/segs)*(head - tail));
-    const double denom(log(base));
-
-    for (unsigned int i=0; i < segs; ++i)
-      for (unsigned int j=1; j<base; ++j)
-	h_axis_tick(tail + (i+log(j)/denom)*step, AL);
-
-    h_axis_tick(head, AL);
-  }
-
-  void v_log_axis(const P& tail, const P& head,
-		  unsigned int segs, epix_label_posn AL, unsigned int base)
-  {
-    line(tail, head, 0, segs);
-
-    const P step((1.0/segs)*(head - tail));
-    const double denom(log(base));
-
-    for (unsigned int i=0; i < segs; ++i)
-      for (unsigned int j=1; j<base; ++j)
-	v_axis_tick(tail + (i+log(j)/denom)*step, AL);
-
-    v_axis_tick(head, AL);
-  }
-
-
-  //// New global functions ////
-  axis top_axis(unsigned int n, const P& offset, epix_label_posn POSN)
-  {
-    axis A(active_screen()->tl(), active_screen()->tr(), n, offset, POSN);
-    A.align(b);
-    return A;
-  }
-
-  axis bottom_axis(unsigned int n, const P& offset, epix_label_posn POSN)
-  {
-    axis A(active_screen()->bl(), active_screen()->br(), n, offset, POSN);
-    A.align(t);
-    return A;
-  }
-
-  axis left_axis(unsigned int n, const P& offset, epix_label_posn POSN)
-  {
-    axis A(active_screen()->bl(), active_screen()->tl(), n, offset, POSN);
-    A.align(r);
-    return A;
-  }
-
-  axis right_axis(unsigned int n, const P& offset, epix_label_posn POSN)
-  {
-    axis A(active_screen()->br(), active_screen()->tr(), n, offset, POSN);
-    A.align(l);
-    return A;
-  }
-
-
-  //// Formatting functions for ePiX::axis ////
-  // standard functions to get axis label from position
-  double __epix_coord1(const P& arg)
-  {
-    return arg.x1();
-  }
-
-  double __epix_coord2(const P& arg)
-  {
-    return arg.x2();
-  }
-
-  double __epix_coord3(const P& arg)
-  {
-    return arg.x3();
-  }
-
-
-  // String representations of double
-  // triples separated by commas
-  std::string __epix_coord_as_double(double x, unsigned int digits,
-				     unsigned int base)
-  {
-    std::stringstream obuf;
-    obuf.precision(digits);
-
-    obuf << "$" << x << "$";
-
-    if (fabs(x) < 1000)
-      return obuf.str();
-
-    // else insert commas
-    std::string val(obuf.str());
-
-    std::string::size_type i(val.find_first_of("."));
-
-    if (i == std::string::npos)
-      i = val.size()-1;
-
-    while (4 < i)
-      {
-	i -= 3;
-	val.insert(i, ",");
-      }
-
-    return val;
-  }
-
-  // [-]\frac{p}{q}
-  std::string __epix_coord_as_frac(double x, unsigned int digits,
-				   unsigned int base)
-  {
-    ePiX::frac xfrac(x);
-
-    std::stringstream obuf;
-    obuf.precision(digits);
-
-    obuf << "$";
-
-    if (xfrac.is_int())
-      obuf << xfrac.num() << "$";
-
-    else
-      {
-	if (xfrac.num() < 0) // x may have rounded to zero
-	  obuf << "-";
-
-	obuf << "\\frac{" << abs(xfrac.num()) << "}"
-	     << "{" << xfrac.denom() << "}$";
-      }
-
-    return obuf.str();
-  }
-
-  // [-]\frac{p\pi}{q}
-  std::string __epix_coord_as_trig_frac(double x, unsigned int digits,
-					unsigned int base)
-  {
-    ePiX::frac xfrac(x/M_PI);
-
-    int xnum(xfrac.num());
-
-    std::stringstream obuf;
-    obuf.precision(digits);
-
-    obuf << "$";
-
-    if (xfrac.is_int())
-      {
-	if (xnum == 0)
-	  obuf << 0 << "$";
-
-	else if (xnum == 1)
-	  obuf << "\\pi$";
-
-	else if (xnum == -1)
-	  obuf << "-\\pi$";
-
-	else
-	  obuf << xfrac.num() << "\\pi$";
-      }
-
-    else // xfrac not an int
-      {
-	if (xfrac.num() < 0)
-	  obuf << "-";
-
-	if (abs(xnum) == 1)
-	  obuf << "\\frac{\\pi}{" << xfrac.denom() << "}$";
-
-	else
-	  obuf << "\\frac{" << abs(xnum) << "\\pi}"
-	       << "{" << xfrac.denom() << "}$";
-      }
-
-    return obuf.str();
-  }
-
-  // b^x
-  std::string __epix_coord_as_log(double x, unsigned int digits,
-				  unsigned int base)
-  {
-    std::stringstream obuf;
-    obuf.precision(digits);
-
-    obuf << "$" << pow(base, x) << "$";
-
-    return obuf.str();
-  }
-
-  // x = N + k, write as eval(b^k) \times b^N
-  std::string __epix_coord_as_log_sci(double x, unsigned int digits,
-				      unsigned int base)
-  {
-    std::stringstream obuf;
-    obuf.precision(digits);
-
-    int N((int) ceil(x));
-
-    double k(pow(base, x - N));
-
-    obuf << "$";
-    if (k != 1.0)
-      {
-	k *= base;
-	N -= 1;
-	obuf << k << "\\times";
-      }
-
-    obuf << base << "^{" << N << "}$";
-
-    return obuf.str();
-  }
-
-  std::string __epix_coord_as_sci(double x, unsigned int digits,
-				  unsigned int base)
-  {
-    std::stringstream obuf;
-    obuf.precision(digits);
-
-    int sgn(x < 0 ? -1 : 1);
-    x = fabs(x);
-    if (x < EPIX_EPSILON)
-      return "$0$";
-
-    // else
-    const double tmp(log10(x)/log10(base));
-
-    int N((int) floor(tmp));
-
-    double k(pow(base, tmp - N));
-
-    obuf << "$";
-    if (sgn < 0)
-      obuf << "-";
-
-    if (k != 1.0)
-      obuf << k << "\\times";
-
-    obuf << base << "^{" << N << "}$";
-
-    return obuf.str();
-  }
-} // end of namespace
diff --git a/graphics/epix/axis.h b/graphics/epix/axis.h
deleted file mode 100644
index 2c5d47d568..0000000000
--- a/graphics/epix/axis.h
+++ /dev/null
@@ -1,207 +0,0 @@
-/* 
- * axis.h -- Decorable coordinate axis class
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.13
- * Last Change: August 23, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#ifndef EPIX_AXIS
-#define EPIX_AXIS
-
-#include <string>
-#include <set>
-
-#include "enums.h"
-#include "triples.h"
-
-namespace ePiX {
-
-  class axis {
-  public:
-    axis(const P&, const P&, unsigned int n,
-	 const P& offset = P(0,0), epix_label_posn POSN=none);
-
-    // attribute-setting
-    axis& dec();  // default
-    axis& frac(); // fractional labels
-    axis& trig(); // fractions times pi
-    axis& sci();  // scientific notation
-
-    // f(x, precision, base) returns a string representing x
-    axis& label_rep(std::string f(double, unsigned int, unsigned int));
-
-    // unmark selected location (non-log labels only)
-    axis& unmark(double arg=0);
-
-    // add or remove logarithmic tags ("sublabels")
-    axis& log(unsigned int base=10); // log ticks and labels
-    axis& tag(double);               // put label at arg in log mode
-    axis& tag235();                  // tags at 2, 3, 5 in log10 mode
-    axis& tags();                    // tags at 2, ..., b-1 in logb mode
-
-    axis& untag();                   // remove all log tags
-    axis& untag(double);             // remove selected tag
-
-    axis& align_labels(epix_label_posn);
-    axis& align(epix_label_posn); // align tick marks
-
-    // number of minor ticks per segment
-    axis& subdivide(unsigned int);
-
-    // set length of minor ticks
-    axis& tick_ratio(double);
-
-    // set precision for axis labels
-    axis& precision(unsigned int digits=0); // 0: reset to default
-
-    void draw_ticks() const;
-    void draw_labels() const;
-    void draw() const;
-
-  private:
-    P m_tail;
-    P m_head;
-
-    unsigned int m_major_segs;
-    unsigned int m_minor_segs;
-
-    double m_tick_ratio;
-
-    epix_label_posn m_align_ticks;
-
-    P m_offset;
-    epix_label_posn m_align_labels;
-
-    unsigned int m_log_base;
-    bool m_log;
-    unsigned int m_precision;
-
-    double (*m_coord)(const P&);  // value to place at arg
-
-    // represent arg as string
-    std::string (*m_rep)(double arg, unsigned int prec, unsigned int base);
-
-    std::set<double> m_omitted;
-    std::set<double> m_log_tags;
-  }; // end of axis class
-
-  // axes along sides of bounding box, ticks automatically aligned
-  axis top_axis(unsigned int n, const P& offset=P(0,0),
-		epix_label_posn POSN=t);
-  axis bottom_axis(unsigned int n, const P& offset=P(0,0),
-		   epix_label_posn POSN=b);
-  axis left_axis(unsigned int n, const P& offset=P(0,0),
-		 epix_label_posn POSN=l);
-  axis right_axis(unsigned int n, const P& offset=P(0,0),
-		  epix_label_posn POSN=r);
-
-
-  // Global functions from Version 1.0
-  void h_axis_labels(const P& tail, const P& head, unsigned int n, 
-		     const P& offset, epix_label_posn POSN=none);
-
-  void v_axis_labels(const P& tail, const P& head, unsigned int n, 
-		     const P& offset, epix_label_posn POSN=none);
-
-  void h_axis_masklabels(const P& tail, const P& head, unsigned int n, 
-			 const P& offset, epix_label_posn POSN=none);
-
-  void v_axis_masklabels(const P& tail, const P& head, unsigned int n, 
-			 const P& offset, epix_label_posn POSN=none);
-
-  // Axis labels with default endpoints
-  void h_axis_labels(unsigned int n, const P& offset, 
-		     epix_label_posn POSN=none);
-  void h_axis_masklabels(unsigned int n, const P& offset,
-			 epix_label_posn POSN=none);
-
-  void v_axis_labels(unsigned int n, const P& offset,
-		     epix_label_posn POSN=none);
-  void v_axis_masklabels(unsigned int n, const P& offset,
-			 epix_label_posn POSN=none);
-
-  //// logarithmic labels ////
-  // labels written $k x base^i$ at i + log_b(k)
-  void h_axis_log_labels(const P& tail, const P& head, unsigned int n,
-			 const P& offset, epix_label_posn POSN=none,
-			 unsigned int base=10);
-
-  void v_axis_log_labels(const P& tail, const P& head, unsigned int n,
-			 const P& offset, epix_label_posn POSN=none,
-			 unsigned int base=10);
-
-  // labels written $base^i$ at coord i
-  void h_axis_log_labels(const P& tail, const P& head,
-			 const P& offset, epix_label_posn POSN=none,
-			 unsigned int base=10);
-
-  void v_axis_log_labels(const P& tail, const P& head,
-			 const P& offset, epix_label_posn POSN=none,
-			 unsigned int base=10);
-
-
-  void h_axis_log_masklabels(const P& tail, const P& head, unsigned int n,
-			     const P& offset, epix_label_posn POSN=none,
-			     unsigned int base=10);
-
-  void v_axis_log_masklabels(const P& tail, const P& head, unsigned int n,
-			     const P& offset, epix_label_posn POSN=none,
-			     unsigned int base=10);
-
-  void h_axis_log_masklabels(const P& tail, const P& head,
-			     const P& offset, epix_label_posn POSN=none,
-			     unsigned int base=10);
-
-  void v_axis_log_masklabels(const P& tail, const P& head,
-			     const P& offset, epix_label_posn POSN=none,
-			     unsigned int base=10);
-
-
-  // Coordinate axes, specified by initial and final points, number of
-  // tick marks. h/v_axis are identical except for style of tick marks.
-
-  // n subintervals
-  void h_axis(const P& tail, const P& head, unsigned int n,
-	      epix_label_posn align=c);
-  void v_axis(const P& tail, const P& head, unsigned int n,
-	      epix_label_posn align=c);
-
-  // Default endpoints (xmin(), 0), xmax(), 0), etc.
-  void h_axis(unsigned int n = xsize(), epix_label_posn align=c);
-  void v_axis(unsigned int n = ysize(), epix_label_posn align=c);
-
-  void h_log_axis(const P& tail, const P& head, unsigned int segs,
-		  epix_label_posn align=c, unsigned int base=10);
-
-  void v_log_axis(const P& tail, const P& head, unsigned int segs,
-		  epix_label_posn align=c, unsigned int base=10);
-
-} // end of namespace
-
-#endif /* EPIX_AXIS */
diff --git a/graphics/epix/bash_completions b/graphics/epix/bash_completions
deleted file mode 100644
index a05daab7e4..0000000000
--- a/graphics/epix/bash_completions
+++ /dev/null
@@ -1,8 +0,0 @@
-# If you use Ian MacDonald's bash completion package, put these
-# lines in either /etc/bash_completions or $HOME/.bashrc to use
-# programmable completion with ePiX.
-#
-complete -f -X '!*.@(xp|flx|cc|c|C|cpp)' epix
-complete -f -X '!*.@(tex|dtx|ltx)' laps
-complete -f -X '!*.@(xp|flx|cc|c|C|cpp|eepic)' elaps
-complete -f -X '!*.@(flx|cc|c|C|cpp)' flix
diff --git a/graphics/epix/camera.cc b/graphics/epix/camera.cc
deleted file mode 100644
index 0a70da081b..0000000000
--- a/graphics/epix/camera.cc
+++ /dev/null
@@ -1,318 +0,0 @@
-/* 
- * camera.cc -- ePiX::camera functions
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.21
- * Last Change: September 22, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#include <cmath>
-
-#include "errors.h"
-#include "constants.h"
-
-#include "pairs.h"
-#include "triples.h"
-#include "frame.h"
-
-#include "functions.h"
-
-#include "halfspace.h"
-
-#include "lens.h"
-#include "camera.h"
-
-namespace ePiX {
-
-  // Need to initialize frame argument for Apple gcc; otherwise cam()
-  // gets null vectors in frame()...
-  Camera::Camera()
-    : the_viewpt(P(0,0,EPIX_INFTY)), the_target(P(0,0,0)), 
-      the_orient(frame(E_1, E_2, E_3)),
-      the_distance(EPIX_INFTY), the_clip_range(MIN_CLIP),
-      the_filter(Neutral()), the_lens(new Perspective()) { }
-
-  // viewpt, target, orient
-  Camera::Camera(const P& vpt)
-    : the_viewpt(vpt), the_target(P(0,0,0)), the_clip_range(MIN_CLIP),
-      the_filter(Neutral())
-  {
-    if (the_viewpt == P(0,0,0))
-      {
-	epix_warning("Cannot initialize Camera at Origin, using (0, 0, oo)");
-	the_viewpt = P(0, 0, EPIX_INFTY);
-      }
-    P viewer(the_viewpt - the_target);
-    the_distance = norm(viewer);
-
-    viewer *= recip(norm(viewer));
-
-    // viewer is "eye", if possible E_3 is "sky"
-    P tmp_sea(E_3*viewer);
-
-    if (norm(tmp_sea) < EPIX_EPSILON) // we're on the "z-axis through vpt"
-      tmp_sea = E_1;
-
-    // eye*sea = sky
-    the_orient = frame(tmp_sea, viewer*tmp_sea, viewer);
-    adjust();
-
-    the_lens = new Perspective();
-  }
-
-
-  Camera::Camera(const Camera& cam)
-    : the_viewpt(cam.the_viewpt), the_target(cam.the_target),
-      the_orient(cam.the_orient), the_distance(cam.the_distance),
-      the_clip_range(cam.the_clip_range), the_filter(cam.the_filter),
-      the_lens(cam.the_lens->clone()) { }
-
-  Camera& Camera::operator= (const Camera& cam)
-  {
-    Lens* tmp_lens(cam.the_lens->clone());
-    the_lens = tmp_lens;
-
-    the_viewpt = cam.the_viewpt;
-    the_target = cam.the_target;
-    the_orient =cam.the_orient;
-    the_distance = cam.the_distance;
-    the_clip_range = cam.the_distance;
-
-    the_filter = cam.the_filter;
-
-    return *this;
-  }
-
-  Camera::~Camera()
-  {
-    delete the_lens;
-  }
-
-  // rotate up/down
-  Camera& Camera::tilt(double angle)
-  {
-    the_orient.rot1(-angle);
-    the_target = the_viewpt + (-the_distance)*the_orient.eye();
-    return *this;
-  }
-
-  // rotate left/right
-  Camera& Camera::pan(double angle)
-  {
-    the_orient.rot2(-angle);
-    the_target = the_viewpt + (-the_distance)*the_orient.eye();
-    return *this;
-  }
-
-  // rotate about viewing axis
-  Camera& Camera::roll(double angle)
-  { 
-    the_orient.rot3(-angle); // target unchanged
-    return *this;
-  }
-
-  // fix target, move viewpt radially along eye()
-  Camera& Camera::range(double d)
-  {
-    if (d == 0)
-      d = EPIX_INFTY;
-
-    the_distance = d;
-    the_viewpt = the_target + d*the_orient.eye();
-
-    return *this;
-  }
-
-  // fix viewpt, move target radially along eye()
-  Camera& Camera::focus(double d)
-  {
-    if (d == 0)
-      d = EPIX_INFTY;
-
-    the_distance = d;
-    the_target = the_viewpt - d*the_orient.eye();
-
-    return *this;
-  }
-
-  // clip everything behind this
-  Camera& Camera::clip_range(double dist)
-  {
-    the_clip_range = (dist < MIN_CLIP ? MIN_CLIP : dist);
-    return *this;
-  }
-
-  // fix target, set viewpt
-  Camera& Camera::at(const P& vpt)
-  {
-    the_viewpt = vpt;
-    adjust();
-
-    return *this;
-  }
-
-  // fix viewpt, set target
-  Camera& Camera::look_at(const P& tgt)
-  {
-    the_target = tgt;
-    adjust();
-
-    return *this;
-  }
-
-  Camera& Camera::at(double x1, double x2, double x3)
-  {
-    the_viewpt = P(x1, x2, x3);
-    adjust();
-
-    return *this;
-  }
-
-  // fix viewpt, set target
-  Camera& Camera::look_at(double x1, double x2, double x3)
-  {
-    the_target = P(x1, x2, x3);
-    adjust();
-
-    return *this;
-  }
-
-  Camera& Camera::filter(const Color& filter)
-  {
-    the_filter=filter;
-    return *this;
-  }
-
-  Camera& Camera::perspective()
-  {
-    delete the_lens;
-    the_lens = new Perspective;
-    return *this;
-  }
-
-  Camera& Camera::orthog()
-  {
-    delete the_lens;
-    the_lens = new Orthog;
-    return *this;
-  }
-
-  Camera& Camera::fisheye()
-  {
-    delete the_lens;
-    the_lens = new Fisheye;
-    return *this;
-  }
-
-  Camera& Camera::bubble()
-  {
-    delete the_lens;
-    the_lens = new Bubble;
-    return *this;
-  }
-
-  Color Camera::operator() (const Color& in_color) const
-  {
-    Color temp = the_filter;
-    return temp.filter(in_color);
-  }
-
-  // lens interface
-  pair Camera::operator() (const P& arg) const
-  {
-    return (*the_lens)(arg, the_orient, the_viewpt, the_distance);
-  }
-
-  bool Camera::is_linear() const
-  {
-    return (*the_lens).is_linear();
-  }
-
-  bool Camera::needs_clip() const
-  {
-    return (*the_lens).needs_clip();
-  }
-
-
-  halfspace Camera::clip_plane() const
-  {
-    const P N(-the_orient.eye());
-    return halfspace(the_viewpt + the_clip_range*N, N);
-  }
-
-  P Camera::eye() const
-  { 
-    return the_orient.eye();
-  }
-
-  P Camera::viewpt() const
-  {
-    return the_viewpt;
-  }
-
-  // private function
-  void Camera::adjust()
-  {
-    P temp(the_target - the_viewpt);
-    the_distance = norm(temp);
-
-    if (the_distance < EPIX_EPSILON)
-      {
-	epix_warning("Cannot make viewpoint and target the same, no action");
-	return;
-      }
-
-    // else
-    temp *= -1.0/the_distance; // reverse direction
-
-    double z_ht(temp|E_3);
-
-    // too close to "z-axis" through target?
-    if (sqrt((1-z_ht)*(1+z_ht)) < EPIX_EPSILON)
-      {
-        if (z_ht >= 0)
-          the_orient = frame();
-
-        else // z_ht < 0
-          the_orient = frame(-E_1, E_2, -E_3);
-      }
-
-    else // far enough from axis
-      the_orient = frame(P(-temp.x2(), temp.x1(), 0), E_3, temp);
-  }
-
-
-  Camera& cam()
-  {
-    static Camera* the_camera(new Camera());
-    return *the_camera;
-  }
-
-  Camera& camera(cam());
-
-} // end of namespace
diff --git a/graphics/epix/camera.h b/graphics/epix/camera.h
deleted file mode 100644
index 87a3590db2..0000000000
--- a/graphics/epix/camera.h
+++ /dev/null
@@ -1,134 +0,0 @@
-/* 
- * camera.h -- ePiX::Camera
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.21
- * Last Change: September 22, 2007
- *
- * 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- *
- *
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-/*
- * A Camera has a location, orientation, lens, and color filter.  The
- * viewer sits at given <distance> from the <target>, in the direction
- * of the <eye>. The vectors <sea> and <sky> point horizontally to the
- * right and vertically upward on the screen.  The viewing angle is
- * controlled by changing the viewer, target, and/or the distance
- * between them.
- *
- * The implementation data comprise:
- *   - a frame ({sea, sky, eye}, with the intuitive meanings:)
- *   - a viewpoint
- *   - a target (at the center of the field of view)
- *   - the distance from the viewpoint to the target
- *   - a "filter" color, Neutral by default, for color separation, etc.
- *   - a Lens
- *
- * A Lens is a mapping P -> pair. In the implementation, the Camera
- * ("body") passes the orientation, target, and distance to the Lens
- * operator.
- */
-
-#ifndef EPIX_CAMERA
-#define EPIX_CAMERA
-
-#include "triples.h"
-#include "frame.h"
-#include "Color.h"
-
-namespace ePiX {
-
-  class halfspace;
-  class Lens;
-  class pair;
-
-  class Camera {
-  public:
-    Camera();
-    Camera(const P& vpt);
-
-    Camera(const Camera&);
-    Camera& operator= (const Camera&);
-    ~Camera();
-
-    // rotate
-    Camera& tilt(double angle); // up/down (pitch)
-    Camera& pan(double angle);  // left/right (yaw)
-    Camera& roll(double angle); // about viewing axis
-
-    // fix target, move viewpt radially along eye()
-    Camera& range(double);
-    // fix viewpt, move target radially along eye()
-    Camera& focus(double);
-
-    // set clip distance
-    Camera& clip_range(double);
-
-    Camera& at(const P& arg);      // fix target, set viewpt
-    Camera& look_at(const P& arg); // fix viewpt, set target
-
-    // alternative syntax
-    Camera& at(double, double, double);
-    Camera& look_at(double, double, double);
-
-    Camera& filter(const Color&);
-
-    // set lens
-    Camera& perspective(); // default
-    Camera& orthog(); // faster
-    Camera& fisheye();
-    Camera& bubble();
-
-    // Functions for internal use
-    // Camera maps
-    Color operator() (const Color&) const; // filter
-    pair  operator() (const P&) const; // lens map
-    bool  is_linear() const; // lens preserves lines?
-
-    bool needs_clip() const; // lens needs scene pre-clipping
-    halfspace clip_plane() const;
-
-    // situation
-    P eye() const;
-    P viewpt() const;
-
-  private:
-    P the_viewpt; // center of projection
-    P the_target; // mapped to Screen origin
-    frame the_orient; // our {sea, sky, eye}
-    double the_distance;
-    double the_clip_range;
-
-    Color the_filter;
-    void adjust(); // re-orient according to target, viewpt
-    Lens* the_lens;
-  }; // end of class Camera
-
-  // global Camera
-  Camera& cam();
-  extern Camera& camera;
-} // end of namespace
-
-#endif /* EPIX_CAMERA */
diff --git a/graphics/epix/circle.cc b/graphics/epix/circle.cc
deleted file mode 100644
index b81150587a..0000000000
--- a/graphics/epix/circle.cc
+++ /dev/null
@@ -1,197 +0,0 @@
-/* 
- * circle.cc -- ePiX::Circle class
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.9
- * Last Change: July 30, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#include <cmath>
-
-#include "errors.h"
-
-#include "constants.h"
-
-#include "triples.h"
-#include "state.h"
-
-#include "segment.h"
-#include "frame.h"
-#include "camera.h"
-
-#include "path.h"
-
-#include "paint_style.h"
-
-#include "intersections.h"
-
-#include "circle.h"
-
-namespace ePiX {
-
-  static const double EPS(EPIX_EPSILON);
-
-  Circle::Circle(const P& ctr, const double rad, const P& perp)
-    : m_center(ctr), m_radius(rad), m_perp(perp), m_malformed(false)
-  {
-    double temp(norm(perp));
-    if (temp < EPS)
-      {
-	epix_warning("Degenerate circle normal, using (0,0,1)");
-	m_perp=E_3;
-      }
-
-    else
-      m_perp *= (1.0/temp); // normalize
-  }
-
-  // point-and-center constructor -- parallel to (x1,x2,0)-plane
-  Circle::Circle(const P& ctr, const P& pt)
-    : m_center(ctr), m_radius(norm(pt - ctr)), m_perp(E_3), m_malformed(false)
-  { 
-    if (fabs(E_3|(pt - ctr)) > EPS)
-      epix_warning("Circle requested with point not in (x,y) plane");
-  }
-
-  // three-point circle constructor
-  Circle::Circle(const P& pt1, const P& pt2, const P& pt3)
-    : m_malformed(false)
-  {
-    P D21(pt2-pt1), D31(pt3-pt1), D32(pt3-pt2), N(D21*D31);
-
-    if (norm(D21) < EPS ||
-	norm(D31) < EPS ||
-	norm(D32) < EPS ||
-	norm(N) < EPS)
-      {
-	epix_warning("Collinear points in Circle constructor");
-	m_malformed = true;
-      }
-
-    else
-      {
-	m_perp = (1.0/norm(N))*N;
-
-	P q2(0.5*(pt1+pt2));
-	P dir2(m_perp*(q2-pt1));
-
-	P q3(0.5*(pt1+pt3));
-	P dir3(m_perp*(q3-pt1));
-
-	m_center = Segment(q2, q2+dir2)*Segment(q3, q3+dir3);
-	m_radius = norm(m_center - pt1);
-      }
-  }
-
-
-  Circle::Circle(bool tag) : m_malformed(true) { }
-
-
-  P Circle::center() const
-  {
-    return m_center;
-  }
-
-  double Circle::radius() const
-  {
-    return m_radius;
-  }
-
-  P Circle::perp() const
-  {
-    return m_perp;
-  }
-
-  bool Circle::malformed() const
-  {
-    return m_malformed;
-  }
-
-  // translation
-  Circle& Circle::shift(const P& arg)
-  {
-    if (!m_malformed)
-      m_center += arg;
-    return *this;
-  }
-
-  Circle& Circle::move_to(const P& arg)
-  {
-    if (!m_malformed)
-      m_center = arg;
-    return *this;
-  }
-
-  // scale radius
-  Circle& Circle::scale(const double c)
-  {
-    if (!m_malformed)
-      m_radius *= c;
-    return *this;
-  }
-
-
-  // project to screen by camera
-  void Circle::draw() const
-  {
-    if (m_malformed)
-      return;
-
-    // else
-    double r(m_radius);
-    P N(m_perp);
-    frame axes; // standard basis
-
-    if (EPS <= norm(N*E_3))
-      axes = frame(E_3*N, E_3, N);
-
-    path data(m_center, r*(axes.sea()), r*(axes.sky()), 0, full_turn());
-    data.close().fill(the_paint_style().fill_flag());
-    data.draw();
-  }
-
-
-  //// global functions ////
-  void circle(const P& ctr, const double rad, const P& perp)
-  {
-    Circle C(ctr, rad, perp);
-    C.draw();
-  }
-
-  void circle(const P& ctr, const P& pt)
-  {
-    Circle C(ctr, pt);
-    C.draw();
-  }
-
-  void circle(const P& pt1, const P& pt2, const P& pt3)
-  {
-    Circle C(pt1, pt2, pt3);
-    C.draw();
-  }
-} // end of namespace
diff --git a/graphics/epix/circle.h b/graphics/epix/circle.h
deleted file mode 100644
index 5d3e80dd72..0000000000
--- a/graphics/epix/circle.h
+++ /dev/null
@@ -1,94 +0,0 @@
-/* 
- * circle.h -- ePiX::Circle class
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.9
- * Last Change: July 30, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-/*
- *   This file provides:
- *
- *   The Circle class (center, radius, unit normal).
- *
- *    - Circle() (defaults to origin, unit radius, in (x1,x2,0)-plane
- *    - Circle(ctr, pt) (parallel to (x1,x2,0)-plane, center ctr, through pt)
- *    - Circle(pt1, pt2, pt3) (arbitrary non-collinear points)
- *    - center(), radius(), perp()
- *    - affine operations: shift(P), move_to(P), scale(double)
- *    - draw() (ePiX ellipse)
- */
-#ifndef EPIX_CIRCLE
-#define EPIX_CIRCLE
-
-#include "triples.h"
-
-namespace ePiX {
-
-  class Circle {
-  public:
-    // defaults to unit circle in (x1,x2,0) plane
-    Circle(const P& ctr=P(0,0,0), double rad=1, const P& perp=E_3);
-
-    Circle(const P& ctr, const P& pt); // center, and point, normal = E_3
-    Circle(const P& pt1, const P& pt2, const P& pt3); // three points
-
-    Circle(bool); // malformed Circle for intersection operators
-
-    P center() const;
-    double radius() const;
-    P perp() const;
-
-    bool malformed() const;
-
-    // translate
-    Circle& shift(const P&);
-    Circle& move_to(const P&);
-    // scale radius by c
-    Circle& scale(double c);
-
-    void draw() const;
-
-  private:
-    P m_center;
-    double m_radius;
-    P m_perp; // unit normal, even if rad = 0
-
-    bool m_malformed;
-  }; // end of Circle class
-
-  // global object-drawing commands
-  void circle(const P& ctr=P(0,0,0), double rad=1, const P& perp=E_3);
-
-  void circle(const P& ctr, const P& pt); // center, and point, normal = E_3
-  void circle(const P& pt1, const P& pt2, const P& pt3); // three points
-
-} // end of namespace
-
-#endif /* EPIX_CIRCLE */
diff --git a/graphics/epix/clipping.cc b/graphics/epix/clipping.cc
deleted file mode 100644
index 8da785d2f5..0000000000
--- a/graphics/epix/clipping.cc
+++ /dev/null
@@ -1,136 +0,0 @@
-/* 
- * clipping.cc -- Implementation of ePiX's current drawing state
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.13
- * Last Change: August 23, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#include <list>
-
-#include "constants.h"
-#include "triples.h"
-#include "functions.h"
-#include "clipping.h"
-
-namespace ePiX {
-
-  typedef std::list<halfspace>::const_iterator Hp;
-  static const double INF(EPIX_INFTY);
-
-  clip_state::clip_state(const P& arg1, const P& arg2)
-  {
-    double min1(min(arg1.x1(), arg2.x1())), max1(max(arg1.x1(), arg2.x1()));
-    double min2(min(arg1.x2(), arg2.x2())), max2(max(arg1.x2(), arg2.x2()));
-    double min3(min(arg1.x3(), arg2.x3())), max3(max(arg1.x3(), arg2.x3()));
-
-    double avg1(0.5*(min1+max1)), avg2(0.5*(min2+max2)), avg3(0.5*(min3+max3));
-
-    // inward-pointing faces of clip_box
-    m_walls.push_back(halfspace(P(max1,avg2,avg3), P(-1, 0, 0)));
-    m_walls.push_back(halfspace(P(min1,avg2,avg3), P( 1, 0, 0)));
-
-    m_walls.push_back(halfspace(P(avg1,max2,avg3), P( 0,-1, 0)));
-    m_walls.push_back(halfspace(P(avg1,min2,avg3), P( 0, 1, 0)));
-
-    m_walls.push_back(halfspace(P(avg1,avg2,max3), P( 0, 0,-1)));
-    m_walls.push_back(halfspace(P(avg1,avg2,min3), P( 0, 0, 1)));
-  }
-
-  clip_state::clip_state()
-  {
-    m_walls.push_back(halfspace(P( INF,   0,   0), P(-1, 0, 0)));
-    m_walls.push_back(halfspace(P(-INF,   0,   0), P( 1, 0, 0)));
-
-    m_walls.push_back(halfspace(P(   0, INF,   0), P( 0,-1, 0)));
-    m_walls.push_back(halfspace(P(   0,-INF,   0), P( 0, 1, 0)));
-
-    m_walls.push_back(halfspace(P(   0,   0, INF), P( 0, 0,-1)));
-    m_walls.push_back(halfspace(P(   0,   0,-INF), P( 0, 0, 1)));
-  }
-
-
-  clip_state& clip_state::add_face(const P& loc, const P& perp)
-  {
-    if (EPIX_EPSILON < norm(perp))
-      m_extras.push_back(halfspace(loc, perp));
-
-    return *this;
-  }
-
-
-  clip_state& clip_state::clear_extras()
-  {
-    m_extras.clear();
-
-    return *this;
-  }
-
-
-  bool clip_state::clips(const P& arg) const
-  {
-    for (Hp p=m_walls.begin(); p != m_walls.end(); ++p)
-      if ( (*p).clips(arg) )
-	return true;
-
-    for (Hp p=m_extras.begin(); p != m_extras.end(); ++p)
-      if ( (*p).clips(arg) )
-	return true;
-
-    return false;
-  }
-
-  // return reference to clipped argument
-  std::list<edge3d>& clip_state::clip_path(std::list<edge3d>& L) const
-  {
-    for (Hp p=m_walls.begin(); p != m_walls.end(); ++p)
-      (*p).clip_path(L);
-
-    for (Hp p=m_extras.begin(); p != m_extras.end(); ++p)
-      (*p).clip_path(L);
-
-    return L;
-  }
-
-  std::list<edge3d>& clip_state::clip_loop(std::list<edge3d>& L) const
-  {
-    for (Hp p=m_walls.begin(); p != m_walls.end(); ++p)
-      (*p).clip_loop(L);
-
-    for (Hp p=m_extras.begin(); p != m_extras.end(); ++p)
-      (*p).clip_loop(L);
-
-    return L;
-  }
-
-  clip_state& the_clip_box()
-  {
-    static clip_state* the_clip_state(new clip_state());
-    return *the_clip_state;
-  }
-} // end of namespace
diff --git a/graphics/epix/clipping.h b/graphics/epix/clipping.h
deleted file mode 100644
index bec60a3801..0000000000
--- a/graphics/epix/clipping.h
+++ /dev/null
@@ -1,77 +0,0 @@
-/* 
- * clipping.h -- ePiX's clip box
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.13
- * Last Change: August 23, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-/*
- * The class in this file implements backend for user-level global
- * functions defined in state.h. This header is not part of epix.h.
- */
-#ifndef EPIX_CLIPPING
-#define EPIX_CLIPPING
-
-#include <string>
-
-#include "edge_data.h"
-#include "halfspace.h"
-
-namespace ePiX {
-
-  class P;
-
-  class clip_state {
-  public:
-    // create inward-pointing faces of clip_box
-    clip_state(const P& arg1, const P& arg2);
-    clip_state(); // very large box by default
-
-    // add and remove faces
-    clip_state& add_face(const P& loc, const P& perp);
-    clip_state& clear_extras();
-
-    bool clips(const P&) const;
-
-    // return reference to clipped argument
-    std::list<edge3d>& clip_path(std::list<edge3d>&) const;
-    std::list<edge3d>& clip_loop(std::list<edge3d>&) const;
-
-  private:
-    std::list<halfspace> m_walls;  // always present
-
-    std::list<halfspace> m_extras; // user-added
-  }; // end of class clip_state
-
-  clip_state& the_clip_box();
-
-} // end of namespace
-
-#endif /* EPIX_CLIPPING */
diff --git a/graphics/epix/config.guess b/graphics/epix/config.guess
deleted file mode 100644
index c38553dc74..0000000000
--- a/graphics/epix/config.guess
+++ /dev/null
@@ -1,1497 +0,0 @@
-#! /bin/sh
-# Attempt to guess a canonical system name.
-#   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
-#   2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
-
-timestamp='2006-02-23'
-
-# This file is free software; you can redistribute it and/or modify it
-# under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful, but
-# WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-# General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
-# 02110-1301, USA.
-#
-# As a special exception to the GNU General Public License, if you
-# distribute this file as part of a program that contains a
-# configuration script generated by Autoconf, you may include it under
-# the same distribution terms that you use for the rest of that program.
-
-
-# Originally written by Per Bothner <per@bothner.com>.
-# Please send patches to <config-patches@gnu.org>.  Submit a context
-# diff and a properly formatted ChangeLog entry.
-#
-# This script attempts to guess a canonical system name similar to
-# config.sub.  If it succeeds, it prints the system name on stdout, and
-# exits with 0.  Otherwise, it exits with 1.
-#
-# The plan is that this can be called by configure scripts if you
-# don't specify an explicit build system type.
-
-me=`echo "$0" | sed -e 's,.*/,,'`
-
-usage="\
-Usage: $0 [OPTION]
-
-Output the configuration name of the system \`$me' is run on.
-
-Operation modes:
-  -h, --help         print this help, then exit
-  -t, --time-stamp   print date of last modification, then exit
-  -v, --version      print version number, then exit
-
-Report bugs and patches to <config-patches@gnu.org>."
-
-version="\
-GNU config.guess ($timestamp)
-
-Originally written by Per Bothner.
-Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
-Free Software Foundation, Inc.
-
-This is free software; see the source for copying conditions.  There is NO
-warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
-
-help="
-Try \`$me --help' for more information."
-
-# Parse command line
-while test $# -gt 0 ; do
-  case $1 in
-    --time-stamp | --time* | -t )
-       echo "$timestamp" ; exit ;;
-    --version | -v )
-       echo "$version" ; exit ;;
-    --help | --h* | -h )
-       echo "$usage"; exit ;;
-    -- )     # Stop option processing
-       shift; break ;;
-    - )	# Use stdin as input.
-       break ;;
-    -* )
-       echo "$me: invalid option $1$help" >&2
-       exit 1 ;;
-    * )
-       break ;;
-  esac
-done
-
-if test $# != 0; then
-  echo "$me: too many arguments$help" >&2
-  exit 1
-fi
-
-trap 'exit 1' 1 2 15
-
-# CC_FOR_BUILD -- compiler used by this script. Note that the use of a
-# compiler to aid in system detection is discouraged as it requires
-# temporary files to be created and, as you can see below, it is a
-# headache to deal with in a portable fashion.
-
-# Historically, `CC_FOR_BUILD' used to be named `HOST_CC'. We still
-# use `HOST_CC' if defined, but it is deprecated.
-
-# Portable tmp directory creation inspired by the Autoconf team.
-
-set_cc_for_build='
-trap "exitcode=\$?; (rm -f \$tmpfiles 2>/dev/null; rmdir \$tmp 2>/dev/null) && exit \$exitcode" 0 ;
-trap "rm -f \$tmpfiles 2>/dev/null; rmdir \$tmp 2>/dev/null; exit 1" 1 2 13 15 ;
-: ${TMPDIR=/tmp} ;
- { tmp=`(umask 077 && mktemp -d "$TMPDIR/cgXXXXXX") 2>/dev/null` && test -n "$tmp" && test -d "$tmp" ; } ||
- { test -n "$RANDOM" && tmp=$TMPDIR/cg$$-$RANDOM && (umask 077 && mkdir $tmp) ; } ||
- { tmp=$TMPDIR/cg-$$ && (umask 077 && mkdir $tmp) && echo "Warning: creating insecure temp directory" >&2 ; } ||
- { echo "$me: cannot create a temporary directory in $TMPDIR" >&2 ; exit 1 ; } ;
-dummy=$tmp/dummy ;
-tmpfiles="$dummy.c $dummy.o $dummy.rel $dummy" ;
-case $CC_FOR_BUILD,$HOST_CC,$CC in
- ,,)    echo "int x;" > $dummy.c ;
-	for c in cc gcc c89 c99 ; do
-	  if ($c -c -o $dummy.o $dummy.c) >/dev/null 2>&1 ; then
-	     CC_FOR_BUILD="$c"; break ;
-	  fi ;
-	done ;
-	if test x"$CC_FOR_BUILD" = x ; then
-	  CC_FOR_BUILD=no_compiler_found ;
-	fi
-	;;
- ,,*)   CC_FOR_BUILD=$CC ;;
- ,*,*)  CC_FOR_BUILD=$HOST_CC ;;
-esac ; set_cc_for_build= ;'
-
-# This is needed to find uname on a Pyramid OSx when run in the BSD universe.
-# (ghazi@noc.rutgers.edu 1994-08-24)
-if (test -f /.attbin/uname) >/dev/null 2>&1 ; then
-	PATH=$PATH:/.attbin ; export PATH
-fi
-
-UNAME_MACHINE=`(uname -m) 2>/dev/null` || UNAME_MACHINE=unknown
-UNAME_RELEASE=`(uname -r) 2>/dev/null` || UNAME_RELEASE=unknown
-UNAME_SYSTEM=`(uname -s) 2>/dev/null`  || UNAME_SYSTEM=unknown
-UNAME_VERSION=`(uname -v) 2>/dev/null` || UNAME_VERSION=unknown
-
-# Note: order is significant - the case branches are not exclusive.
-
-case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
-    *:NetBSD:*:*)
-	# NetBSD (nbsd) targets should (where applicable) match one or
-	# more of the tupples: *-*-netbsdelf*, *-*-netbsdaout*,
-	# *-*-netbsdecoff* and *-*-netbsd*.  For targets that recently
-	# switched to ELF, *-*-netbsd* would select the old
-	# object file format.  This provides both forward
-	# compatibility and a consistent mechanism for selecting the
-	# object file format.
-	#
-	# Note: NetBSD doesn't particularly care about the vendor
-	# portion of the name.  We always set it to "unknown".
-	sysctl="sysctl -n hw.machine_arch"
-	UNAME_MACHINE_ARCH=`(/sbin/$sysctl 2>/dev/null || \
-	    /usr/sbin/$sysctl 2>/dev/null || echo unknown)`
-	case "${UNAME_MACHINE_ARCH}" in
-	    armeb) machine=armeb-unknown ;;
-	    arm*) machine=arm-unknown ;;
-	    sh3el) machine=shl-unknown ;;
-	    sh3eb) machine=sh-unknown ;;
-	    *) machine=${UNAME_MACHINE_ARCH}-unknown ;;
-	esac
-	# The Operating System including object format, if it has switched
-	# to ELF recently, or will in the future.
-	case "${UNAME_MACHINE_ARCH}" in
-	    arm*|i386|m68k|ns32k|sh3*|sparc|vax)
-		eval $set_cc_for_build
-		if echo __ELF__ | $CC_FOR_BUILD -E - 2>/dev/null \
-			| grep __ELF__ >/dev/null
-		then
-		    # Once all utilities can be ECOFF (netbsdecoff) or a.out (netbsdaout).
-		    # Return netbsd for either.  FIX?
-		    os=netbsd
-		else
-		    os=netbsdelf
-		fi
-		;;
-	    *)
-	        os=netbsd
-		;;
-	esac
-	# The OS release
-	# Debian GNU/NetBSD machines have a different userland, and
-	# thus, need a distinct triplet. However, they do not need
-	# kernel version information, so it can be replaced with a
-	# suitable tag, in the style of linux-gnu.
-	case "${UNAME_VERSION}" in
-	    Debian*)
-		release='-gnu'
-		;;
-	    *)
-		release=`echo ${UNAME_RELEASE}|sed -e 's/[-_].*/\./'`
-		;;
-	esac
-	# Since CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM:
-	# contains redundant information, the shorter form:
-	# CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM is used.
-	echo "${machine}-${os}${release}"
-	exit ;;
-    *:OpenBSD:*:*)
-	UNAME_MACHINE_ARCH=`arch | sed 's/OpenBSD.//'`
-	echo ${UNAME_MACHINE_ARCH}-unknown-openbsd${UNAME_RELEASE}
-	exit ;;
-    *:ekkoBSD:*:*)
-	echo ${UNAME_MACHINE}-unknown-ekkobsd${UNAME_RELEASE}
-	exit ;;
-    *:SolidBSD:*:*)
-	echo ${UNAME_MACHINE}-unknown-solidbsd${UNAME_RELEASE}
-	exit ;;
-    macppc:MirBSD:*:*)
-	echo powerppc-unknown-mirbsd${UNAME_RELEASE}
-	exit ;;
-    *:MirBSD:*:*)
-	echo ${UNAME_MACHINE}-unknown-mirbsd${UNAME_RELEASE}
-	exit ;;
-    alpha:OSF1:*:*)
-	case $UNAME_RELEASE in
-	*4.0)
-		UNAME_RELEASE=`/usr/sbin/sizer -v | awk '{print $3}'`
-		;;
-	*5.*)
-	        UNAME_RELEASE=`/usr/sbin/sizer -v | awk '{print $4}'`
-		;;
-	esac
-	# According to Compaq, /usr/sbin/psrinfo has been available on
-	# OSF/1 and Tru64 systems produced since 1995.  I hope that
-	# covers most systems running today.  This code pipes the CPU
-	# types through head -n 1, so we only detect the type of CPU 0.
-	ALPHA_CPU_TYPE=`/usr/sbin/psrinfo -v | sed -n -e 's/^  The alpha \(.*\) processor.*$/\1/p' | head -n 1`
-	case "$ALPHA_CPU_TYPE" in
-	    "EV4 (21064)")
-		UNAME_MACHINE="alpha" ;;
-	    "EV4.5 (21064)")
-		UNAME_MACHINE="alpha" ;;
-	    "LCA4 (21066/21068)")
-		UNAME_MACHINE="alpha" ;;
-	    "EV5 (21164)")
-		UNAME_MACHINE="alphaev5" ;;
-	    "EV5.6 (21164A)")
-		UNAME_MACHINE="alphaev56" ;;
-	    "EV5.6 (21164PC)")
-		UNAME_MACHINE="alphapca56" ;;
-	    "EV5.7 (21164PC)")
-		UNAME_MACHINE="alphapca57" ;;
-	    "EV6 (21264)")
-		UNAME_MACHINE="alphaev6" ;;
-	    "EV6.7 (21264A)")
-		UNAME_MACHINE="alphaev67" ;;
-	    "EV6.8CB (21264C)")
-		UNAME_MACHINE="alphaev68" ;;
-	    "EV6.8AL (21264B)")
-		UNAME_MACHINE="alphaev68" ;;
-	    "EV6.8CX (21264D)")
-		UNAME_MACHINE="alphaev68" ;;
-	    "EV6.9A (21264/EV69A)")
-		UNAME_MACHINE="alphaev69" ;;
-	    "EV7 (21364)")
-		UNAME_MACHINE="alphaev7" ;;
-	    "EV7.9 (21364A)")
-		UNAME_MACHINE="alphaev79" ;;
-	esac
-	# A Pn.n version is a patched version.
-	# A Vn.n version is a released version.
-	# A Tn.n version is a released field test version.
-	# A Xn.n version is an unreleased experimental baselevel.
-	# 1.2 uses "1.2" for uname -r.
-	echo ${UNAME_MACHINE}-dec-osf`echo ${UNAME_RELEASE} | sed -e 's/^[PVTX]//' | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz'`
-	exit ;;
-    Alpha\ *:Windows_NT*:*)
-	# How do we know it's Interix rather than the generic POSIX subsystem?
-	# Should we change UNAME_MACHINE based on the output of uname instead
-	# of the specific Alpha model?
-	echo alpha-pc-interix
-	exit ;;
-    21064:Windows_NT:50:3)
-	echo alpha-dec-winnt3.5
-	exit ;;
-    Amiga*:UNIX_System_V:4.0:*)
-	echo m68k-unknown-sysv4
-	exit ;;
-    *:[Aa]miga[Oo][Ss]:*:*)
-	echo ${UNAME_MACHINE}-unknown-amigaos
-	exit ;;
-    *:[Mm]orph[Oo][Ss]:*:*)
-	echo ${UNAME_MACHINE}-unknown-morphos
-	exit ;;
-    *:OS/390:*:*)
-	echo i370-ibm-openedition
-	exit ;;
-    *:z/VM:*:*)
-	echo s390-ibm-zvmoe
-	exit ;;
-    *:OS400:*:*)
-        echo powerpc-ibm-os400
-	exit ;;
-    arm:RISC*:1.[012]*:*|arm:riscix:1.[012]*:*)
-	echo arm-acorn-riscix${UNAME_RELEASE}
-	exit ;;
-    arm:riscos:*:*|arm:RISCOS:*:*)
-	echo arm-unknown-riscos
-	exit ;;
-    SR2?01:HI-UX/MPP:*:* | SR8000:HI-UX/MPP:*:*)
-	echo hppa1.1-hitachi-hiuxmpp
-	exit ;;
-    Pyramid*:OSx*:*:* | MIS*:OSx*:*:* | MIS*:SMP_DC-OSx*:*:*)
-	# akee@wpdis03.wpafb.af.mil (Earle F. Ake) contributed MIS and NILE.
-	if test "`(/bin/universe) 2>/dev/null`" = att ; then
-		echo pyramid-pyramid-sysv3
-	else
-		echo pyramid-pyramid-bsd
-	fi
-	exit ;;
-    NILE*:*:*:dcosx)
-	echo pyramid-pyramid-svr4
-	exit ;;
-    DRS?6000:unix:4.0:6*)
-	echo sparc-icl-nx6
-	exit ;;
-    DRS?6000:UNIX_SV:4.2*:7* | DRS?6000:isis:4.2*:7*)
-	case `/usr/bin/uname -p` in
-	    sparc) echo sparc-icl-nx7; exit ;;
-	esac ;;
-    sun4H:SunOS:5.*:*)
-	echo sparc-hal-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
-	exit ;;
-    sun4*:SunOS:5.*:* | tadpole*:SunOS:5.*:*)
-	echo sparc-sun-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
-	exit ;;
-    i86pc:SunOS:5.*:*)
-	echo i386-pc-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
-	exit ;;
-    sun4*:SunOS:6*:*)
-	# According to config.sub, this is the proper way to canonicalize
-	# SunOS6.  Hard to guess exactly what SunOS6 will be like, but
-	# it's likely to be more like Solaris than SunOS4.
-	echo sparc-sun-solaris3`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
-	exit ;;
-    sun4*:SunOS:*:*)
-	case "`/usr/bin/arch -k`" in
-	    Series*|S4*)
-		UNAME_RELEASE=`uname -v`
-		;;
-	esac
-	# Japanese Language versions have a version number like `4.1.3-JL'.
-	echo sparc-sun-sunos`echo ${UNAME_RELEASE}|sed -e 's/-/_/'`
-	exit ;;
-    sun3*:SunOS:*:*)
-	echo m68k-sun-sunos${UNAME_RELEASE}
-	exit ;;
-    sun*:*:4.2BSD:*)
-	UNAME_RELEASE=`(sed 1q /etc/motd | awk '{print substr($5,1,3)}') 2>/dev/null`
-	test "x${UNAME_RELEASE}" = "x" && UNAME_RELEASE=3
-	case "`/bin/arch`" in
-	    sun3)
-		echo m68k-sun-sunos${UNAME_RELEASE}
-		;;
-	    sun4)
-		echo sparc-sun-sunos${UNAME_RELEASE}
-		;;
-	esac
-	exit ;;
-    aushp:SunOS:*:*)
-	echo sparc-auspex-sunos${UNAME_RELEASE}
-	exit ;;
-    # The situation for MiNT is a little confusing.  The machine name
-    # can be virtually everything (everything which is not
-    # "atarist" or "atariste" at least should have a processor
-    # > m68000).  The system name ranges from "MiNT" over "FreeMiNT"
-    # to the lowercase version "mint" (or "freemint").  Finally
-    # the system name "TOS" denotes a system which is actually not
-    # MiNT.  But MiNT is downward compatible to TOS, so this should
-    # be no problem.
-    atarist[e]:*MiNT:*:* | atarist[e]:*mint:*:* | atarist[e]:*TOS:*:*)
-        echo m68k-atari-mint${UNAME_RELEASE}
-	exit ;;
-    atari*:*MiNT:*:* | atari*:*mint:*:* | atarist[e]:*TOS:*:*)
-	echo m68k-atari-mint${UNAME_RELEASE}
-        exit ;;
-    *falcon*:*MiNT:*:* | *falcon*:*mint:*:* | *falcon*:*TOS:*:*)
-        echo m68k-atari-mint${UNAME_RELEASE}
-	exit ;;
-    milan*:*MiNT:*:* | milan*:*mint:*:* | *milan*:*TOS:*:*)
-        echo m68k-milan-mint${UNAME_RELEASE}
-        exit ;;
-    hades*:*MiNT:*:* | hades*:*mint:*:* | *hades*:*TOS:*:*)
-        echo m68k-hades-mint${UNAME_RELEASE}
-        exit ;;
-    *:*MiNT:*:* | *:*mint:*:* | *:*TOS:*:*)
-        echo m68k-unknown-mint${UNAME_RELEASE}
-        exit ;;
-    m68k:machten:*:*)
-	echo m68k-apple-machten${UNAME_RELEASE}
-	exit ;;
-    powerpc:machten:*:*)
-	echo powerpc-apple-machten${UNAME_RELEASE}
-	exit ;;
-    RISC*:Mach:*:*)
-	echo mips-dec-mach_bsd4.3
-	exit ;;
-    RISC*:ULTRIX:*:*)
-	echo mips-dec-ultrix${UNAME_RELEASE}
-	exit ;;
-    VAX*:ULTRIX*:*:*)
-	echo vax-dec-ultrix${UNAME_RELEASE}
-	exit ;;
-    2020:CLIX:*:* | 2430:CLIX:*:*)
-	echo clipper-intergraph-clix${UNAME_RELEASE}
-	exit ;;
-    mips:*:*:UMIPS | mips:*:*:RISCos)
-	eval $set_cc_for_build
-	sed 's/^	//' << EOF >$dummy.c
-#ifdef __cplusplus
-#include <stdio.h>  /* for printf() prototype */
-	int main (int argc, char *argv[]) {
-#else
-	int main (argc, argv) int argc; char *argv[]; {
-#endif
-	#if defined (host_mips) && defined (MIPSEB)
-	#if defined (SYSTYPE_SYSV)
-	  printf ("mips-mips-riscos%ssysv\n", argv[1]); exit (0);
-	#endif
-	#if defined (SYSTYPE_SVR4)
-	  printf ("mips-mips-riscos%ssvr4\n", argv[1]); exit (0);
-	#endif
-	#if defined (SYSTYPE_BSD43) || defined(SYSTYPE_BSD)
-	  printf ("mips-mips-riscos%sbsd\n", argv[1]); exit (0);
-	#endif
-	#endif
-	  exit (-1);
-	}
-EOF
-	$CC_FOR_BUILD -o $dummy $dummy.c &&
-	  dummyarg=`echo "${UNAME_RELEASE}" | sed -n 's/\([0-9]*\).*/\1/p'` &&
-	  SYSTEM_NAME=`$dummy $dummyarg` &&
-	    { echo "$SYSTEM_NAME"; exit; }
-	echo mips-mips-riscos${UNAME_RELEASE}
-	exit ;;
-    Motorola:PowerMAX_OS:*:*)
-	echo powerpc-motorola-powermax
-	exit ;;
-    Motorola:*:4.3:PL8-*)
-	echo powerpc-harris-powermax
-	exit ;;
-    Night_Hawk:*:*:PowerMAX_OS | Synergy:PowerMAX_OS:*:*)
-	echo powerpc-harris-powermax
-	exit ;;
-    Night_Hawk:Power_UNIX:*:*)
-	echo powerpc-harris-powerunix
-	exit ;;
-    m88k:CX/UX:7*:*)
-	echo m88k-harris-cxux7
-	exit ;;
-    m88k:*:4*:R4*)
-	echo m88k-motorola-sysv4
-	exit ;;
-    m88k:*:3*:R3*)
-	echo m88k-motorola-sysv3
-	exit ;;
-    AViiON:dgux:*:*)
-        # DG/UX returns AViiON for all architectures
-        UNAME_PROCESSOR=`/usr/bin/uname -p`
-	if [ $UNAME_PROCESSOR = mc88100 ] || [ $UNAME_PROCESSOR = mc88110 ]
-	then
-	    if [ ${TARGET_BINARY_INTERFACE}x = m88kdguxelfx ] || \
-	       [ ${TARGET_BINARY_INTERFACE}x = x ]
-	    then
-		echo m88k-dg-dgux${UNAME_RELEASE}
-	    else
-		echo m88k-dg-dguxbcs${UNAME_RELEASE}
-	    fi
-	else
-	    echo i586-dg-dgux${UNAME_RELEASE}
-	fi
- 	exit ;;
-    M88*:DolphinOS:*:*)	# DolphinOS (SVR3)
-	echo m88k-dolphin-sysv3
-	exit ;;
-    M88*:*:R3*:*)
-	# Delta 88k system running SVR3
-	echo m88k-motorola-sysv3
-	exit ;;
-    XD88*:*:*:*) # Tektronix XD88 system running UTekV (SVR3)
-	echo m88k-tektronix-sysv3
-	exit ;;
-    Tek43[0-9][0-9]:UTek:*:*) # Tektronix 4300 system running UTek (BSD)
-	echo m68k-tektronix-bsd
-	exit ;;
-    *:IRIX*:*:*)
-	echo mips-sgi-irix`echo ${UNAME_RELEASE}|sed -e 's/-/_/g'`
-	exit ;;
-    ????????:AIX?:[12].1:2)   # AIX 2.2.1 or AIX 2.1.1 is RT/PC AIX.
-	echo romp-ibm-aix     # uname -m gives an 8 hex-code CPU id
-	exit ;;               # Note that: echo "'`uname -s`'" gives 'AIX '
-    i*86:AIX:*:*)
-	echo i386-ibm-aix
-	exit ;;
-    ia64:AIX:*:*)
-	if [ -x /usr/bin/oslevel ] ; then
-		IBM_REV=`/usr/bin/oslevel`
-	else
-		IBM_REV=${UNAME_VERSION}.${UNAME_RELEASE}
-	fi
-	echo ${UNAME_MACHINE}-ibm-aix${IBM_REV}
-	exit ;;
-    *:AIX:2:3)
-	if grep bos325 /usr/include/stdio.h >/dev/null 2>&1; then
-		eval $set_cc_for_build
-		sed 's/^		//' << EOF >$dummy.c
-		#include <sys/systemcfg.h>
-
-		main()
-			{
-			if (!__power_pc())
-				exit(1);
-			puts("powerpc-ibm-aix3.2.5");
-			exit(0);
-			}
-EOF
-		if $CC_FOR_BUILD -o $dummy $dummy.c && SYSTEM_NAME=`$dummy`
-		then
-			echo "$SYSTEM_NAME"
-		else
-			echo rs6000-ibm-aix3.2.5
-		fi
-	elif grep bos324 /usr/include/stdio.h >/dev/null 2>&1; then
-		echo rs6000-ibm-aix3.2.4
-	else
-		echo rs6000-ibm-aix3.2
-	fi
-	exit ;;
-    *:AIX:*:[45])
-	IBM_CPU_ID=`/usr/sbin/lsdev -C -c processor -S available | sed 1q | awk '{ print $1 }'`
-	if /usr/sbin/lsattr -El ${IBM_CPU_ID} | grep ' POWER' >/dev/null 2>&1; then
-		IBM_ARCH=rs6000
-	else
-		IBM_ARCH=powerpc
-	fi
-	if [ -x /usr/bin/oslevel ] ; then
-		IBM_REV=`/usr/bin/oslevel`
-	else
-		IBM_REV=${UNAME_VERSION}.${UNAME_RELEASE}
-	fi
-	echo ${IBM_ARCH}-ibm-aix${IBM_REV}
-	exit ;;
-    *:AIX:*:*)
-	echo rs6000-ibm-aix
-	exit ;;
-    ibmrt:4.4BSD:*|romp-ibm:BSD:*)
-	echo romp-ibm-bsd4.4
-	exit ;;
-    ibmrt:*BSD:*|romp-ibm:BSD:*)            # covers RT/PC BSD and
-	echo romp-ibm-bsd${UNAME_RELEASE}   # 4.3 with uname added to
-	exit ;;                             # report: romp-ibm BSD 4.3
-    *:BOSX:*:*)
-	echo rs6000-bull-bosx
-	exit ;;
-    DPX/2?00:B.O.S.:*:*)
-	echo m68k-bull-sysv3
-	exit ;;
-    9000/[34]??:4.3bsd:1.*:*)
-	echo m68k-hp-bsd
-	exit ;;
-    hp300:4.4BSD:*:* | 9000/[34]??:4.3bsd:2.*:*)
-	echo m68k-hp-bsd4.4
-	exit ;;
-    9000/[34678]??:HP-UX:*:*)
-	HPUX_REV=`echo ${UNAME_RELEASE}|sed -e 's/[^.]*.[0B]*//'`
-	case "${UNAME_MACHINE}" in
-	    9000/31? )            HP_ARCH=m68000 ;;
-	    9000/[34]?? )         HP_ARCH=m68k ;;
-	    9000/[678][0-9][0-9])
-		if [ -x /usr/bin/getconf ]; then
-		    sc_cpu_version=`/usr/bin/getconf SC_CPU_VERSION 2>/dev/null`
-                    sc_kernel_bits=`/usr/bin/getconf SC_KERNEL_BITS 2>/dev/null`
-                    case "${sc_cpu_version}" in
-                      523) HP_ARCH="hppa1.0" ;; # CPU_PA_RISC1_0
-                      528) HP_ARCH="hppa1.1" ;; # CPU_PA_RISC1_1
-                      532)                      # CPU_PA_RISC2_0
-                        case "${sc_kernel_bits}" in
-                          32) HP_ARCH="hppa2.0n" ;;
-                          64) HP_ARCH="hppa2.0w" ;;
-			  '') HP_ARCH="hppa2.0" ;;   # HP-UX 10.20
-                        esac ;;
-                    esac
-		fi
-		if [ "${HP_ARCH}" = "" ]; then
-		    eval $set_cc_for_build
-		    sed 's/^              //' << EOF >$dummy.c
-
-              #define _HPUX_SOURCE
-              #include <stdlib.h>
-              #include <unistd.h>
-
-              int main ()
-              {
-              #if defined(_SC_KERNEL_BITS)
-                  long bits = sysconf(_SC_KERNEL_BITS);
-              #endif
-                  long cpu  = sysconf (_SC_CPU_VERSION);
-
-                  switch (cpu)
-              	{
-              	case CPU_PA_RISC1_0: puts ("hppa1.0"); break;
-              	case CPU_PA_RISC1_1: puts ("hppa1.1"); break;
-              	case CPU_PA_RISC2_0:
-              #if defined(_SC_KERNEL_BITS)
-              	    switch (bits)
-              		{
-              		case 64: puts ("hppa2.0w"); break;
-              		case 32: puts ("hppa2.0n"); break;
-              		default: puts ("hppa2.0"); break;
-              		} break;
-              #else  /* !defined(_SC_KERNEL_BITS) */
-              	    puts ("hppa2.0"); break;
-              #endif
-              	default: puts ("hppa1.0"); break;
-              	}
-                  exit (0);
-              }
-EOF
-		    (CCOPTS= $CC_FOR_BUILD -o $dummy $dummy.c 2>/dev/null) && HP_ARCH=`$dummy`
-		    test -z "$HP_ARCH" && HP_ARCH=hppa
-		fi ;;
-	esac
-	if [ ${HP_ARCH} = "hppa2.0w" ]
-	then
-	    eval $set_cc_for_build
-
-	    # hppa2.0w-hp-hpux* has a 64-bit kernel and a compiler generating
-	    # 32-bit code.  hppa64-hp-hpux* has the same kernel and a compiler
-	    # generating 64-bit code.  GNU and HP use different nomenclature:
-	    #
-	    # $ CC_FOR_BUILD=cc ./config.guess
-	    # => hppa2.0w-hp-hpux11.23
-	    # $ CC_FOR_BUILD="cc +DA2.0w" ./config.guess
-	    # => hppa64-hp-hpux11.23
-
-	    if echo __LP64__ | (CCOPTS= $CC_FOR_BUILD -E - 2>/dev/null) |
-		grep __LP64__ >/dev/null
-	    then
-		HP_ARCH="hppa2.0w"
-	    else
-		HP_ARCH="hppa64"
-	    fi
-	fi
-	echo ${HP_ARCH}-hp-hpux${HPUX_REV}
-	exit ;;
-    ia64:HP-UX:*:*)
-	HPUX_REV=`echo ${UNAME_RELEASE}|sed -e 's/[^.]*.[0B]*//'`
-	echo ia64-hp-hpux${HPUX_REV}
-	exit ;;
-    3050*:HI-UX:*:*)
-	eval $set_cc_for_build
-	sed 's/^	//' << EOF >$dummy.c
-	#include <unistd.h>
-	int
-	main ()
-	{
-	  long cpu = sysconf (_SC_CPU_VERSION);
-	  /* The order matters, because CPU_IS_HP_MC68K erroneously returns
-	     true for CPU_PA_RISC1_0.  CPU_IS_PA_RISC returns correct
-	     results, however.  */
-	  if (CPU_IS_PA_RISC (cpu))
-	    {
-	      switch (cpu)
-		{
-		  case CPU_PA_RISC1_0: puts ("hppa1.0-hitachi-hiuxwe2"); break;
-		  case CPU_PA_RISC1_1: puts ("hppa1.1-hitachi-hiuxwe2"); break;
-		  case CPU_PA_RISC2_0: puts ("hppa2.0-hitachi-hiuxwe2"); break;
-		  default: puts ("hppa-hitachi-hiuxwe2"); break;
-		}
-	    }
-	  else if (CPU_IS_HP_MC68K (cpu))
-	    puts ("m68k-hitachi-hiuxwe2");
-	  else puts ("unknown-hitachi-hiuxwe2");
-	  exit (0);
-	}
-EOF
-	$CC_FOR_BUILD -o $dummy $dummy.c && SYSTEM_NAME=`$dummy` &&
-		{ echo "$SYSTEM_NAME"; exit; }
-	echo unknown-hitachi-hiuxwe2
-	exit ;;
-    9000/7??:4.3bsd:*:* | 9000/8?[79]:4.3bsd:*:* )
-	echo hppa1.1-hp-bsd
-	exit ;;
-    9000/8??:4.3bsd:*:*)
-	echo hppa1.0-hp-bsd
-	exit ;;
-    *9??*:MPE/iX:*:* | *3000*:MPE/iX:*:*)
-	echo hppa1.0-hp-mpeix
-	exit ;;
-    hp7??:OSF1:*:* | hp8?[79]:OSF1:*:* )
-	echo hppa1.1-hp-osf
-	exit ;;
-    hp8??:OSF1:*:*)
-	echo hppa1.0-hp-osf
-	exit ;;
-    i*86:OSF1:*:*)
-	if [ -x /usr/sbin/sysversion ] ; then
-	    echo ${UNAME_MACHINE}-unknown-osf1mk
-	else
-	    echo ${UNAME_MACHINE}-unknown-osf1
-	fi
-	exit ;;
-    parisc*:Lites*:*:*)
-	echo hppa1.1-hp-lites
-	exit ;;
-    C1*:ConvexOS:*:* | convex:ConvexOS:C1*:*)
-	echo c1-convex-bsd
-        exit ;;
-    C2*:ConvexOS:*:* | convex:ConvexOS:C2*:*)
-	if getsysinfo -f scalar_acc
-	then echo c32-convex-bsd
-	else echo c2-convex-bsd
-	fi
-        exit ;;
-    C34*:ConvexOS:*:* | convex:ConvexOS:C34*:*)
-	echo c34-convex-bsd
-        exit ;;
-    C38*:ConvexOS:*:* | convex:ConvexOS:C38*:*)
-	echo c38-convex-bsd
-        exit ;;
-    C4*:ConvexOS:*:* | convex:ConvexOS:C4*:*)
-	echo c4-convex-bsd
-        exit ;;
-    CRAY*Y-MP:*:*:*)
-	echo ymp-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
-	exit ;;
-    CRAY*[A-Z]90:*:*:*)
-	echo ${UNAME_MACHINE}-cray-unicos${UNAME_RELEASE} \
-	| sed -e 's/CRAY.*\([A-Z]90\)/\1/' \
-	      -e y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/ \
-	      -e 's/\.[^.]*$/.X/'
-	exit ;;
-    CRAY*TS:*:*:*)
-	echo t90-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
-	exit ;;
-    CRAY*T3E:*:*:*)
-	echo alphaev5-cray-unicosmk${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
-	exit ;;
-    CRAY*SV1:*:*:*)
-	echo sv1-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
-	exit ;;
-    *:UNICOS/mp:*:*)
-	echo craynv-cray-unicosmp${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
-	exit ;;
-    F30[01]:UNIX_System_V:*:* | F700:UNIX_System_V:*:*)
-	FUJITSU_PROC=`uname -m | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz'`
-        FUJITSU_SYS=`uname -p | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/\///'`
-        FUJITSU_REL=`echo ${UNAME_RELEASE} | sed -e 's/ /_/'`
-        echo "${FUJITSU_PROC}-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}"
-        exit ;;
-    5000:UNIX_System_V:4.*:*)
-        FUJITSU_SYS=`uname -p | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/\///'`
-        FUJITSU_REL=`echo ${UNAME_RELEASE} | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/ /_/'`
-        echo "sparc-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}"
-	exit ;;
-    i*86:BSD/386:*:* | i*86:BSD/OS:*:* | *:Ascend\ Embedded/OS:*:*)
-	echo ${UNAME_MACHINE}-pc-bsdi${UNAME_RELEASE}
-	exit ;;
-    sparc*:BSD/OS:*:*)
-	echo sparc-unknown-bsdi${UNAME_RELEASE}
-	exit ;;
-    *:BSD/OS:*:*)
-	echo ${UNAME_MACHINE}-unknown-bsdi${UNAME_RELEASE}
-	exit ;;
-    *:FreeBSD:*:*)
-	case ${UNAME_MACHINE} in
-	    pc98)
-		echo i386-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;;
-	    *)
-		echo ${UNAME_MACHINE}-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;;
-	esac
-	exit ;;
-    i*:CYGWIN*:*)
-	echo ${UNAME_MACHINE}-pc-cygwin
-	exit ;;
-    i*:MINGW*:*)
-	echo ${UNAME_MACHINE}-pc-mingw32
-	exit ;;
-    i*:MSYS_NT-*:*:*)
-	echo ${UNAME_MACHINE}-pc-mingw32
-	exit ;;
-    i*:windows32*:*)
-    	# uname -m includes "-pc" on this system.
-    	echo ${UNAME_MACHINE}-mingw32
-	exit ;;
-    i*:PW*:*)
-	echo ${UNAME_MACHINE}-pc-pw32
-	exit ;;
-    x86:Interix*:[345]*)
-	echo i586-pc-interix${UNAME_RELEASE}
-	exit ;;
-    EM64T:Interix*:[345]*)
-	echo x86_64-unknown-interix${UNAME_RELEASE}
-	exit ;;
-    [345]86:Windows_95:* | [345]86:Windows_98:* | [345]86:Windows_NT:*)
-	echo i${UNAME_MACHINE}-pc-mks
-	exit ;;
-    i*:Windows_NT*:* | Pentium*:Windows_NT*:*)
-	# How do we know it's Interix rather than the generic POSIX subsystem?
-	# It also conflicts with pre-2.0 versions of AT&T UWIN. Should we
-	# UNAME_MACHINE based on the output of uname instead of i386?
-	echo i586-pc-interix
-	exit ;;
-    i*:UWIN*:*)
-	echo ${UNAME_MACHINE}-pc-uwin
-	exit ;;
-    amd64:CYGWIN*:*:* | x86_64:CYGWIN*:*:*)
-	echo x86_64-unknown-cygwin
-	exit ;;
-    p*:CYGWIN*:*)
-	echo powerpcle-unknown-cygwin
-	exit ;;
-    prep*:SunOS:5.*:*)
-	echo powerpcle-unknown-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
-	exit ;;
-    *:GNU:*:*)
-	# the GNU system
-	echo `echo ${UNAME_MACHINE}|sed -e 's,[-/].*$,,'`-unknown-gnu`echo ${UNAME_RELEASE}|sed -e 's,/.*$,,'`
-	exit ;;
-    *:GNU/*:*:*)
-	# other systems with GNU libc and userland
-	echo ${UNAME_MACHINE}-unknown-`echo ${UNAME_SYSTEM} | sed 's,^[^/]*/,,' | tr '[A-Z]' '[a-z]'``echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'`-gnu
-	exit ;;
-    i*86:Minix:*:*)
-	echo ${UNAME_MACHINE}-pc-minix
-	exit ;;
-    arm*:Linux:*:*)
-	echo ${UNAME_MACHINE}-unknown-linux-gnu
-	exit ;;
-    cris:Linux:*:*)
-	echo cris-axis-linux-gnu
-	exit ;;
-    crisv32:Linux:*:*)
-	echo crisv32-axis-linux-gnu
-	exit ;;
-    frv:Linux:*:*)
-    	echo frv-unknown-linux-gnu
-	exit ;;
-    ia64:Linux:*:*)
-	echo ${UNAME_MACHINE}-unknown-linux-gnu
-	exit ;;
-    m32r*:Linux:*:*)
-	echo ${UNAME_MACHINE}-unknown-linux-gnu
-	exit ;;
-    m68*:Linux:*:*)
-	echo ${UNAME_MACHINE}-unknown-linux-gnu
-	exit ;;
-    mips:Linux:*:*)
-	eval $set_cc_for_build
-	sed 's/^	//' << EOF >$dummy.c
-	#undef CPU
-	#undef mips
-	#undef mipsel
-	#if defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL) || defined(MIPSEL)
-	CPU=mipsel
-	#else
-	#if defined(__MIPSEB__) || defined(__MIPSEB) || defined(_MIPSEB) || defined(MIPSEB)
-	CPU=mips
-	#else
-	CPU=
-	#endif
-	#endif
-EOF
-	eval "`$CC_FOR_BUILD -E $dummy.c 2>/dev/null | sed -n '
-	    /^CPU/{
-		s: ::g
-		p
-	    }'`"
-	test x"${CPU}" != x && { echo "${CPU}-unknown-linux-gnu"; exit; }
-	;;
-    mips64:Linux:*:*)
-	eval $set_cc_for_build
-	sed 's/^	//' << EOF >$dummy.c
-	#undef CPU
-	#undef mips64
-	#undef mips64el
-	#if defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL) || defined(MIPSEL)
-	CPU=mips64el
-	#else
-	#if defined(__MIPSEB__) || defined(__MIPSEB) || defined(_MIPSEB) || defined(MIPSEB)
-	CPU=mips64
-	#else
-	CPU=
-	#endif
-	#endif
-EOF
-	eval "`$CC_FOR_BUILD -E $dummy.c 2>/dev/null | sed -n '
-	    /^CPU/{
-		s: ::g
-		p
-	    }'`"
-	test x"${CPU}" != x && { echo "${CPU}-unknown-linux-gnu"; exit; }
-	;;
-    or32:Linux:*:*)
-	echo or32-unknown-linux-gnu
-	exit ;;
-    ppc:Linux:*:*)
-	echo powerpc-unknown-linux-gnu
-	exit ;;
-    ppc64:Linux:*:*)
-	echo powerpc64-unknown-linux-gnu
-	exit ;;
-    alpha:Linux:*:*)
-	case `sed -n '/^cpu model/s/^.*: \(.*\)/\1/p' < /proc/cpuinfo` in
-	  EV5)   UNAME_MACHINE=alphaev5 ;;
-	  EV56)  UNAME_MACHINE=alphaev56 ;;
-	  PCA56) UNAME_MACHINE=alphapca56 ;;
-	  PCA57) UNAME_MACHINE=alphapca56 ;;
-	  EV6)   UNAME_MACHINE=alphaev6 ;;
-	  EV67)  UNAME_MACHINE=alphaev67 ;;
-	  EV68*) UNAME_MACHINE=alphaev68 ;;
-        esac
-	objdump --private-headers /bin/sh | grep ld.so.1 >/dev/null
-	if test "$?" = 0 ; then LIBC="libc1" ; else LIBC="" ; fi
-	echo ${UNAME_MACHINE}-unknown-linux-gnu${LIBC}
-	exit ;;
-    parisc:Linux:*:* | hppa:Linux:*:*)
-	# Look for CPU level
-	case `grep '^cpu[^a-z]*:' /proc/cpuinfo 2>/dev/null | cut -d' ' -f2` in
-	  PA7*) echo hppa1.1-unknown-linux-gnu ;;
-	  PA8*) echo hppa2.0-unknown-linux-gnu ;;
-	  *)    echo hppa-unknown-linux-gnu ;;
-	esac
-	exit ;;
-    parisc64:Linux:*:* | hppa64:Linux:*:*)
-	echo hppa64-unknown-linux-gnu
-	exit ;;
-    s390:Linux:*:* | s390x:Linux:*:*)
-	echo ${UNAME_MACHINE}-ibm-linux
-	exit ;;
-    sh64*:Linux:*:*)
-    	echo ${UNAME_MACHINE}-unknown-linux-gnu
-	exit ;;
-    sh*:Linux:*:*)
-	echo ${UNAME_MACHINE}-unknown-linux-gnu
-	exit ;;
-    sparc:Linux:*:* | sparc64:Linux:*:*)
-	echo ${UNAME_MACHINE}-unknown-linux-gnu
-	exit ;;
-    vax:Linux:*:*)
-	echo ${UNAME_MACHINE}-dec-linux-gnu
-	exit ;;
-    x86_64:Linux:*:*)
-	echo x86_64-unknown-linux-gnu
-	exit ;;
-    i*86:Linux:*:*)
-	# The BFD linker knows what the default object file format is, so
-	# first see if it will tell us. cd to the root directory to prevent
-	# problems with other programs or directories called `ld' in the path.
-	# Set LC_ALL=C to ensure ld outputs messages in English.
-	ld_supported_targets=`cd /; LC_ALL=C ld --help 2>&1 \
-			 | sed -ne '/supported targets:/!d
-				    s/[ 	][ 	]*/ /g
-				    s/.*supported targets: *//
-				    s/ .*//
-				    p'`
-        case "$ld_supported_targets" in
-	  elf32-i386)
-		TENTATIVE="${UNAME_MACHINE}-pc-linux-gnu"
-		;;
-	  a.out-i386-linux)
-		echo "${UNAME_MACHINE}-pc-linux-gnuaout"
-		exit ;;
-	  coff-i386)
-		echo "${UNAME_MACHINE}-pc-linux-gnucoff"
-		exit ;;
-	  "")
-		# Either a pre-BFD a.out linker (linux-gnuoldld) or
-		# one that does not give us useful --help.
-		echo "${UNAME_MACHINE}-pc-linux-gnuoldld"
-		exit ;;
-	esac
-	# Determine whether the default compiler is a.out or elf
-	eval $set_cc_for_build
-	sed 's/^	//' << EOF >$dummy.c
-	#include <features.h>
-	#ifdef __ELF__
-	# ifdef __GLIBC__
-	#  if __GLIBC__ >= 2
-	LIBC=gnu
-	#  else
-	LIBC=gnulibc1
-	#  endif
-	# else
-	LIBC=gnulibc1
-	# endif
-	#else
-	#if defined(__INTEL_COMPILER) || defined(__PGI) || defined(__sun)
-	LIBC=gnu
-	#else
-	LIBC=gnuaout
-	#endif
-	#endif
-	#ifdef __dietlibc__
-	LIBC=dietlibc
-	#endif
-EOF
-	eval "`$CC_FOR_BUILD -E $dummy.c 2>/dev/null | sed -n '
-	    /^LIBC/{
-		s: ::g
-		p
-	    }'`"
-	test x"${LIBC}" != x && {
-		echo "${UNAME_MACHINE}-pc-linux-${LIBC}"
-		exit
-	}
-	test x"${TENTATIVE}" != x && { echo "${TENTATIVE}"; exit; }
-	;;
-    i*86:DYNIX/ptx:4*:*)
-	# ptx 4.0 does uname -s correctly, with DYNIX/ptx in there.
-	# earlier versions are messed up and put the nodename in both
-	# sysname and nodename.
-	echo i386-sequent-sysv4
-	exit ;;
-    i*86:UNIX_SV:4.2MP:2.*)
-        # Unixware is an offshoot of SVR4, but it has its own version
-        # number series starting with 2...
-        # I am not positive that other SVR4 systems won't match this,
-	# I just have to hope.  -- rms.
-        # Use sysv4.2uw... so that sysv4* matches it.
-	echo ${UNAME_MACHINE}-pc-sysv4.2uw${UNAME_VERSION}
-	exit ;;
-    i*86:OS/2:*:*)
-	# If we were able to find `uname', then EMX Unix compatibility
-	# is probably installed.
-	echo ${UNAME_MACHINE}-pc-os2-emx
-	exit ;;
-    i*86:XTS-300:*:STOP)
-	echo ${UNAME_MACHINE}-unknown-stop
-	exit ;;
-    i*86:atheos:*:*)
-	echo ${UNAME_MACHINE}-unknown-atheos
-	exit ;;
-    i*86:syllable:*:*)
-	echo ${UNAME_MACHINE}-pc-syllable
-	exit ;;
-    i*86:LynxOS:2.*:* | i*86:LynxOS:3.[01]*:* | i*86:LynxOS:4.0*:*)
-	echo i386-unknown-lynxos${UNAME_RELEASE}
-	exit ;;
-    i*86:*DOS:*:*)
-	echo ${UNAME_MACHINE}-pc-msdosdjgpp
-	exit ;;
-    i*86:*:4.*:* | i*86:SYSTEM_V:4.*:*)
-	UNAME_REL=`echo ${UNAME_RELEASE} | sed 's/\/MP$//'`
-	if grep Novell /usr/include/link.h >/dev/null 2>/dev/null; then
-		echo ${UNAME_MACHINE}-univel-sysv${UNAME_REL}
-	else
-		echo ${UNAME_MACHINE}-pc-sysv${UNAME_REL}
-	fi
-	exit ;;
-    i*86:*:5:[678]*)
-    	# UnixWare 7.x, OpenUNIX and OpenServer 6.
-	case `/bin/uname -X | grep "^Machine"` in
-	    *486*)	     UNAME_MACHINE=i486 ;;
-	    *Pentium)	     UNAME_MACHINE=i586 ;;
-	    *Pent*|*Celeron) UNAME_MACHINE=i686 ;;
-	esac
-	echo ${UNAME_MACHINE}-unknown-sysv${UNAME_RELEASE}${UNAME_SYSTEM}${UNAME_VERSION}
-	exit ;;
-    i*86:*:3.2:*)
-	if test -f /usr/options/cb.name; then
-		UNAME_REL=`sed -n 's/.*Version //p' </usr/options/cb.name`
-		echo ${UNAME_MACHINE}-pc-isc$UNAME_REL
-	elif /bin/uname -X 2>/dev/null >/dev/null ; then
-		UNAME_REL=`(/bin/uname -X|grep Release|sed -e 's/.*= //')`
-		(/bin/uname -X|grep i80486 >/dev/null) && UNAME_MACHINE=i486
-		(/bin/uname -X|grep '^Machine.*Pentium' >/dev/null) \
-			&& UNAME_MACHINE=i586
-		(/bin/uname -X|grep '^Machine.*Pent *II' >/dev/null) \
-			&& UNAME_MACHINE=i686
-		(/bin/uname -X|grep '^Machine.*Pentium Pro' >/dev/null) \
-			&& UNAME_MACHINE=i686
-		echo ${UNAME_MACHINE}-pc-sco$UNAME_REL
-	else
-		echo ${UNAME_MACHINE}-pc-sysv32
-	fi
-	exit ;;
-    pc:*:*:*)
-	# Left here for compatibility:
-        # uname -m prints for DJGPP always 'pc', but it prints nothing about
-        # the processor, so we play safe by assuming i386.
-	echo i386-pc-msdosdjgpp
-        exit ;;
-    Intel:Mach:3*:*)
-	echo i386-pc-mach3
-	exit ;;
-    paragon:*:*:*)
-	echo i860-intel-osf1
-	exit ;;
-    i860:*:4.*:*) # i860-SVR4
-	if grep Stardent /usr/include/sys/uadmin.h >/dev/null 2>&1 ; then
-	  echo i860-stardent-sysv${UNAME_RELEASE} # Stardent Vistra i860-SVR4
-	else # Add other i860-SVR4 vendors below as they are discovered.
-	  echo i860-unknown-sysv${UNAME_RELEASE}  # Unknown i860-SVR4
-	fi
-	exit ;;
-    mini*:CTIX:SYS*5:*)
-	# "miniframe"
-	echo m68010-convergent-sysv
-	exit ;;
-    mc68k:UNIX:SYSTEM5:3.51m)
-	echo m68k-convergent-sysv
-	exit ;;
-    M680?0:D-NIX:5.3:*)
-	echo m68k-diab-dnix
-	exit ;;
-    M68*:*:R3V[5678]*:*)
-	test -r /sysV68 && { echo 'm68k-motorola-sysv'; exit; } ;;
-    3[345]??:*:4.0:3.0 | 3[34]??A:*:4.0:3.0 | 3[34]??,*:*:4.0:3.0 | 3[34]??/*:*:4.0:3.0 | 4400:*:4.0:3.0 | 4850:*:4.0:3.0 | SKA40:*:4.0:3.0 | SDS2:*:4.0:3.0 | SHG2:*:4.0:3.0 | S7501*:*:4.0:3.0)
-	OS_REL=''
-	test -r /etc/.relid \
-	&& OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid`
-	/bin/uname -p 2>/dev/null | grep 86 >/dev/null \
-	  && { echo i486-ncr-sysv4.3${OS_REL}; exit; }
-	/bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \
-	  && { echo i586-ncr-sysv4.3${OS_REL}; exit; } ;;
-    3[34]??:*:4.0:* | 3[34]??,*:*:4.0:*)
-        /bin/uname -p 2>/dev/null | grep 86 >/dev/null \
-          && { echo i486-ncr-sysv4; exit; } ;;
-    m68*:LynxOS:2.*:* | m68*:LynxOS:3.0*:*)
-	echo m68k-unknown-lynxos${UNAME_RELEASE}
-	exit ;;
-    mc68030:UNIX_System_V:4.*:*)
-	echo m68k-atari-sysv4
-	exit ;;
-    TSUNAMI:LynxOS:2.*:*)
-	echo sparc-unknown-lynxos${UNAME_RELEASE}
-	exit ;;
-    rs6000:LynxOS:2.*:*)
-	echo rs6000-unknown-lynxos${UNAME_RELEASE}
-	exit ;;
-    PowerPC:LynxOS:2.*:* | PowerPC:LynxOS:3.[01]*:* | PowerPC:LynxOS:4.0*:*)
-	echo powerpc-unknown-lynxos${UNAME_RELEASE}
-	exit ;;
-    SM[BE]S:UNIX_SV:*:*)
-	echo mips-dde-sysv${UNAME_RELEASE}
-	exit ;;
-    RM*:ReliantUNIX-*:*:*)
-	echo mips-sni-sysv4
-	exit ;;
-    RM*:SINIX-*:*:*)
-	echo mips-sni-sysv4
-	exit ;;
-    *:SINIX-*:*:*)
-	if uname -p 2>/dev/null >/dev/null ; then
-		UNAME_MACHINE=`(uname -p) 2>/dev/null`
-		echo ${UNAME_MACHINE}-sni-sysv4
-	else
-		echo ns32k-sni-sysv
-	fi
-	exit ;;
-    PENTIUM:*:4.0*:*) # Unisys `ClearPath HMP IX 4000' SVR4/MP effort
-                      # says <Richard.M.Bartel@ccMail.Census.GOV>
-        echo i586-unisys-sysv4
-        exit ;;
-    *:UNIX_System_V:4*:FTX*)
-	# From Gerald Hewes <hewes@openmarket.com>.
-	# How about differentiating between stratus architectures? -djm
-	echo hppa1.1-stratus-sysv4
-	exit ;;
-    *:*:*:FTX*)
-	# From seanf@swdc.stratus.com.
-	echo i860-stratus-sysv4
-	exit ;;
-    i*86:VOS:*:*)
-	# From Paul.Green@stratus.com.
-	echo ${UNAME_MACHINE}-stratus-vos
-	exit ;;
-    *:VOS:*:*)
-	# From Paul.Green@stratus.com.
-	echo hppa1.1-stratus-vos
-	exit ;;
-    mc68*:A/UX:*:*)
-	echo m68k-apple-aux${UNAME_RELEASE}
-	exit ;;
-    news*:NEWS-OS:6*:*)
-	echo mips-sony-newsos6
-	exit ;;
-    R[34]000:*System_V*:*:* | R4000:UNIX_SYSV:*:* | R*000:UNIX_SV:*:*)
-	if [ -d /usr/nec ]; then
-	        echo mips-nec-sysv${UNAME_RELEASE}
-	else
-	        echo mips-unknown-sysv${UNAME_RELEASE}
-	fi
-        exit ;;
-    BeBox:BeOS:*:*)	# BeOS running on hardware made by Be, PPC only.
-	echo powerpc-be-beos
-	exit ;;
-    BeMac:BeOS:*:*)	# BeOS running on Mac or Mac clone, PPC only.
-	echo powerpc-apple-beos
-	exit ;;
-    BePC:BeOS:*:*)	# BeOS running on Intel PC compatible.
-	echo i586-pc-beos
-	exit ;;
-    SX-4:SUPER-UX:*:*)
-	echo sx4-nec-superux${UNAME_RELEASE}
-	exit ;;
-    SX-5:SUPER-UX:*:*)
-	echo sx5-nec-superux${UNAME_RELEASE}
-	exit ;;
-    SX-6:SUPER-UX:*:*)
-	echo sx6-nec-superux${UNAME_RELEASE}
-	exit ;;
-    Power*:Rhapsody:*:*)
-	echo powerpc-apple-rhapsody${UNAME_RELEASE}
-	exit ;;
-    *:Rhapsody:*:*)
-	echo ${UNAME_MACHINE}-apple-rhapsody${UNAME_RELEASE}
-	exit ;;
-    *:Darwin:*:*)
-	UNAME_PROCESSOR=`uname -p` || UNAME_PROCESSOR=unknown
-	case $UNAME_PROCESSOR in
-	    unknown) UNAME_PROCESSOR=powerpc ;;
-	esac
-	echo ${UNAME_PROCESSOR}-apple-darwin${UNAME_RELEASE}
-	exit ;;
-    *:procnto*:*:* | *:QNX:[0123456789]*:*)
-	UNAME_PROCESSOR=`uname -p`
-	if test "$UNAME_PROCESSOR" = "x86"; then
-		UNAME_PROCESSOR=i386
-		UNAME_MACHINE=pc
-	fi
-	echo ${UNAME_PROCESSOR}-${UNAME_MACHINE}-nto-qnx${UNAME_RELEASE}
-	exit ;;
-    *:QNX:*:4*)
-	echo i386-pc-qnx
-	exit ;;
-    NSE-?:NONSTOP_KERNEL:*:*)
-	echo nse-tandem-nsk${UNAME_RELEASE}
-	exit ;;
-    NSR-?:NONSTOP_KERNEL:*:*)
-	echo nsr-tandem-nsk${UNAME_RELEASE}
-	exit ;;
-    *:NonStop-UX:*:*)
-	echo mips-compaq-nonstopux
-	exit ;;
-    BS2000:POSIX*:*:*)
-	echo bs2000-siemens-sysv
-	exit ;;
-    DS/*:UNIX_System_V:*:*)
-	echo ${UNAME_MACHINE}-${UNAME_SYSTEM}-${UNAME_RELEASE}
-	exit ;;
-    *:Plan9:*:*)
-	# "uname -m" is not consistent, so use $cputype instead. 386
-	# is converted to i386 for consistency with other x86
-	# operating systems.
-	if test "$cputype" = "386"; then
-	    UNAME_MACHINE=i386
-	else
-	    UNAME_MACHINE="$cputype"
-	fi
-	echo ${UNAME_MACHINE}-unknown-plan9
-	exit ;;
-    *:TOPS-10:*:*)
-	echo pdp10-unknown-tops10
-	exit ;;
-    *:TENEX:*:*)
-	echo pdp10-unknown-tenex
-	exit ;;
-    KS10:TOPS-20:*:* | KL10:TOPS-20:*:* | TYPE4:TOPS-20:*:*)
-	echo pdp10-dec-tops20
-	exit ;;
-    XKL-1:TOPS-20:*:* | TYPE5:TOPS-20:*:*)
-	echo pdp10-xkl-tops20
-	exit ;;
-    *:TOPS-20:*:*)
-	echo pdp10-unknown-tops20
-	exit ;;
-    *:ITS:*:*)
-	echo pdp10-unknown-its
-	exit ;;
-    SEI:*:*:SEIUX)
-        echo mips-sei-seiux${UNAME_RELEASE}
-	exit ;;
-    *:DragonFly:*:*)
-	echo ${UNAME_MACHINE}-unknown-dragonfly`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'`
-	exit ;;
-    *:*VMS:*:*)
-    	UNAME_MACHINE=`(uname -p) 2>/dev/null`
-	case "${UNAME_MACHINE}" in
-	    A*) echo alpha-dec-vms ; exit ;;
-	    I*) echo ia64-dec-vms ; exit ;;
-	    V*) echo vax-dec-vms ; exit ;;
-	esac ;;
-    *:XENIX:*:SysV)
-	echo i386-pc-xenix
-	exit ;;
-    i*86:skyos:*:*)
-	echo ${UNAME_MACHINE}-pc-skyos`echo ${UNAME_RELEASE}` | sed -e 's/ .*$//'
-	exit ;;
-    i*86:rdos:*:*)
-	echo ${UNAME_MACHINE}-pc-rdos
-	exit ;;
-esac
-
-#echo '(No uname command or uname output not recognized.)' 1>&2
-#echo "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" 1>&2
-
-eval $set_cc_for_build
-cat >$dummy.c <<EOF
-#ifdef _SEQUENT_
-# include <sys/types.h>
-# include <sys/utsname.h>
-#endif
-main ()
-{
-#if defined (sony)
-#if defined (MIPSEB)
-  /* BFD wants "bsd" instead of "newsos".  Perhaps BFD should be changed,
-     I don't know....  */
-  printf ("mips-sony-bsd\n"); exit (0);
-#else
-#include <sys/param.h>
-  printf ("m68k-sony-newsos%s\n",
-#ifdef NEWSOS4
-          "4"
-#else
-	  ""
-#endif
-         ); exit (0);
-#endif
-#endif
-
-#if defined (__arm) && defined (__acorn) && defined (__unix)
-  printf ("arm-acorn-riscix\n"); exit (0);
-#endif
-
-#if defined (hp300) && !defined (hpux)
-  printf ("m68k-hp-bsd\n"); exit (0);
-#endif
-
-#if defined (NeXT)
-#if !defined (__ARCHITECTURE__)
-#define __ARCHITECTURE__ "m68k"
-#endif
-  int version;
-  version=`(hostinfo | sed -n 's/.*NeXT Mach \([0-9]*\).*/\1/p') 2>/dev/null`;
-  if (version < 4)
-    printf ("%s-next-nextstep%d\n", __ARCHITECTURE__, version);
-  else
-    printf ("%s-next-openstep%d\n", __ARCHITECTURE__, version);
-  exit (0);
-#endif
-
-#if defined (MULTIMAX) || defined (n16)
-#if defined (UMAXV)
-  printf ("ns32k-encore-sysv\n"); exit (0);
-#else
-#if defined (CMU)
-  printf ("ns32k-encore-mach\n"); exit (0);
-#else
-  printf ("ns32k-encore-bsd\n"); exit (0);
-#endif
-#endif
-#endif
-
-#if defined (__386BSD__)
-  printf ("i386-pc-bsd\n"); exit (0);
-#endif
-
-#if defined (sequent)
-#if defined (i386)
-  printf ("i386-sequent-dynix\n"); exit (0);
-#endif
-#if defined (ns32000)
-  printf ("ns32k-sequent-dynix\n"); exit (0);
-#endif
-#endif
-
-#if defined (_SEQUENT_)
-    struct utsname un;
-
-    uname(&un);
-
-    if (strncmp(un.version, "V2", 2) == 0) {
-	printf ("i386-sequent-ptx2\n"); exit (0);
-    }
-    if (strncmp(un.version, "V1", 2) == 0) { /* XXX is V1 correct? */
-	printf ("i386-sequent-ptx1\n"); exit (0);
-    }
-    printf ("i386-sequent-ptx\n"); exit (0);
-
-#endif
-
-#if defined (vax)
-# if !defined (ultrix)
-#  include <sys/param.h>
-#  if defined (BSD)
-#   if BSD == 43
-      printf ("vax-dec-bsd4.3\n"); exit (0);
-#   else
-#    if BSD == 199006
-      printf ("vax-dec-bsd4.3reno\n"); exit (0);
-#    else
-      printf ("vax-dec-bsd\n"); exit (0);
-#    endif
-#   endif
-#  else
-    printf ("vax-dec-bsd\n"); exit (0);
-#  endif
-# else
-    printf ("vax-dec-ultrix\n"); exit (0);
-# endif
-#endif
-
-#if defined (alliant) && defined (i860)
-  printf ("i860-alliant-bsd\n"); exit (0);
-#endif
-
-  exit (1);
-}
-EOF
-
-$CC_FOR_BUILD -o $dummy $dummy.c 2>/dev/null && SYSTEM_NAME=`$dummy` &&
-	{ echo "$SYSTEM_NAME"; exit; }
-
-# Apollos put the system type in the environment.
-
-test -d /usr/apollo && { echo ${ISP}-apollo-${SYSTYPE}; exit; }
-
-# Convex versions that predate uname can use getsysinfo(1)
-
-if [ -x /usr/convex/getsysinfo ]
-then
-    case `getsysinfo -f cpu_type` in
-    c1*)
-	echo c1-convex-bsd
-	exit ;;
-    c2*)
-	if getsysinfo -f scalar_acc
-	then echo c32-convex-bsd
-	else echo c2-convex-bsd
-	fi
-	exit ;;
-    c34*)
-	echo c34-convex-bsd
-	exit ;;
-    c38*)
-	echo c38-convex-bsd
-	exit ;;
-    c4*)
-	echo c4-convex-bsd
-	exit ;;
-    esac
-fi
-
-cat >&2 <<EOF
-$0: unable to guess system type
-
-This script, last modified $timestamp, has failed to recognize
-the operating system you are using. It is advised that you
-download the most up to date version of the config scripts from
-
-  http://savannah.gnu.org/cgi-bin/viewcvs/*checkout*/config/config/config.guess
-and
-  http://savannah.gnu.org/cgi-bin/viewcvs/*checkout*/config/config/config.sub
-
-If the version you run ($0) is already up to date, please
-send the following data and any information you think might be
-pertinent to <config-patches@gnu.org> in order to provide the needed
-information to handle your system.
-
-config.guess timestamp = $timestamp
-
-uname -m = `(uname -m) 2>/dev/null || echo unknown`
-uname -r = `(uname -r) 2>/dev/null || echo unknown`
-uname -s = `(uname -s) 2>/dev/null || echo unknown`
-uname -v = `(uname -v) 2>/dev/null || echo unknown`
-
-/usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null`
-/bin/uname -X     = `(/bin/uname -X) 2>/dev/null`
-
-hostinfo               = `(hostinfo) 2>/dev/null`
-/bin/universe          = `(/bin/universe) 2>/dev/null`
-/usr/bin/arch -k       = `(/usr/bin/arch -k) 2>/dev/null`
-/bin/arch              = `(/bin/arch) 2>/dev/null`
-/usr/bin/oslevel       = `(/usr/bin/oslevel) 2>/dev/null`
-/usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null`
-
-UNAME_MACHINE = ${UNAME_MACHINE}
-UNAME_RELEASE = ${UNAME_RELEASE}
-UNAME_SYSTEM  = ${UNAME_SYSTEM}
-UNAME_VERSION = ${UNAME_VERSION}
-EOF
-
-exit 1
-
-# Local variables:
-# eval: (add-hook 'write-file-hooks 'time-stamp)
-# time-stamp-start: "timestamp='"
-# time-stamp-format: "%:y-%02m-%02d"
-# time-stamp-end: "'"
-# End:
diff --git a/graphics/epix/config.sub b/graphics/epix/config.sub
deleted file mode 100644
index ad9f395711..0000000000
--- a/graphics/epix/config.sub
+++ /dev/null
@@ -1,1608 +0,0 @@
-#! /bin/sh
-# Configuration validation subroutine script.
-#   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
-#   2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
-
-timestamp='2006-02-23'
-
-# This file is (in principle) common to ALL GNU software.
-# The presence of a machine in this file suggests that SOME GNU software
-# can handle that machine.  It does not imply ALL GNU software can.
-#
-# This file is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
-# 02110-1301, USA.
-#
-# As a special exception to the GNU General Public License, if you
-# distribute this file as part of a program that contains a
-# configuration script generated by Autoconf, you may include it under
-# the same distribution terms that you use for the rest of that program.
-
-
-# Please send patches to <config-patches@gnu.org>.  Submit a context
-# diff and a properly formatted ChangeLog entry.
-#
-# Configuration subroutine to validate and canonicalize a configuration type.
-# Supply the specified configuration type as an argument.
-# If it is invalid, we print an error message on stderr and exit with code 1.
-# Otherwise, we print the canonical config type on stdout and succeed.
-
-# This file is supposed to be the same for all GNU packages
-# and recognize all the CPU types, system types and aliases
-# that are meaningful with *any* GNU software.
-# Each package is responsible for reporting which valid configurations
-# it does not support.  The user should be able to distinguish
-# a failure to support a valid configuration from a meaningless
-# configuration.
-
-# The goal of this file is to map all the various variations of a given
-# machine specification into a single specification in the form:
-#	CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM
-# or in some cases, the newer four-part form:
-#	CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM
-# It is wrong to echo any other type of specification.
-
-me=`echo "$0" | sed -e 's,.*/,,'`
-
-usage="\
-Usage: $0 [OPTION] CPU-MFR-OPSYS
-       $0 [OPTION] ALIAS
-
-Canonicalize a configuration name.
-
-Operation modes:
-  -h, --help         print this help, then exit
-  -t, --time-stamp   print date of last modification, then exit
-  -v, --version      print version number, then exit
-
-Report bugs and patches to <config-patches@gnu.org>."
-
-version="\
-GNU config.sub ($timestamp)
-
-Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
-Free Software Foundation, Inc.
-
-This is free software; see the source for copying conditions.  There is NO
-warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
-
-help="
-Try \`$me --help' for more information."
-
-# Parse command line
-while test $# -gt 0 ; do
-  case $1 in
-    --time-stamp | --time* | -t )
-       echo "$timestamp" ; exit ;;
-    --version | -v )
-       echo "$version" ; exit ;;
-    --help | --h* | -h )
-       echo "$usage"; exit ;;
-    -- )     # Stop option processing
-       shift; break ;;
-    - )	# Use stdin as input.
-       break ;;
-    -* )
-       echo "$me: invalid option $1$help"
-       exit 1 ;;
-
-    *local*)
-       # First pass through any local machine types.
-       echo $1
-       exit ;;
-
-    * )
-       break ;;
-  esac
-done
-
-case $# in
- 0) echo "$me: missing argument$help" >&2
-    exit 1;;
- 1) ;;
- *) echo "$me: too many arguments$help" >&2
-    exit 1;;
-esac
-
-# Separate what the user gave into CPU-COMPANY and OS or KERNEL-OS (if any).
-# Here we must recognize all the valid KERNEL-OS combinations.
-maybe_os=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\2/'`
-case $maybe_os in
-  nto-qnx* | linux-gnu* | linux-dietlibc | linux-newlib* | linux-uclibc* | \
-  uclinux-uclibc* | uclinux-gnu* | kfreebsd*-gnu* | knetbsd*-gnu* | netbsd*-gnu* | \
-  storm-chaos* | os2-emx* | rtmk-nova*)
-    os=-$maybe_os
-    basic_machine=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\1/'`
-    ;;
-  *)
-    basic_machine=`echo $1 | sed 's/-[^-]*$//'`
-    if [ $basic_machine != $1 ]
-    then os=`echo $1 | sed 's/.*-/-/'`
-    else os=; fi
-    ;;
-esac
-
-### Let's recognize common machines as not being operating systems so
-### that things like config.sub decstation-3100 work.  We also
-### recognize some manufacturers as not being operating systems, so we
-### can provide default operating systems below.
-case $os in
-	-sun*os*)
-		# Prevent following clause from handling this invalid input.
-		;;
-	-dec* | -mips* | -sequent* | -encore* | -pc532* | -sgi* | -sony* | \
-	-att* | -7300* | -3300* | -delta* | -motorola* | -sun[234]* | \
-	-unicom* | -ibm* | -next | -hp | -isi* | -apollo | -altos* | \
-	-convergent* | -ncr* | -news | -32* | -3600* | -3100* | -hitachi* |\
-	-c[123]* | -convex* | -sun | -crds | -omron* | -dg | -ultra | -tti* | \
-	-harris | -dolphin | -highlevel | -gould | -cbm | -ns | -masscomp | \
-	-apple | -axis | -knuth | -cray)
-		os=
-		basic_machine=$1
-		;;
-	-sim | -cisco | -oki | -wec | -winbond)
-		os=
-		basic_machine=$1
-		;;
-	-scout)
-		;;
-	-wrs)
-		os=-vxworks
-		basic_machine=$1
-		;;
-	-chorusos*)
-		os=-chorusos
-		basic_machine=$1
-		;;
- 	-chorusrdb)
- 		os=-chorusrdb
-		basic_machine=$1
- 		;;
-	-hiux*)
-		os=-hiuxwe2
-		;;
-	-sco6)
-		os=-sco5v6
-		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
-		;;
-	-sco5)
-		os=-sco3.2v5
-		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
-		;;
-	-sco4)
-		os=-sco3.2v4
-		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
-		;;
-	-sco3.2.[4-9]*)
-		os=`echo $os | sed -e 's/sco3.2./sco3.2v/'`
-		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
-		;;
-	-sco3.2v[4-9]*)
-		# Don't forget version if it is 3.2v4 or newer.
-		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
-		;;
-	-sco5v6*)
-		# Don't forget version if it is 3.2v4 or newer.
-		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
-		;;
-	-sco*)
-		os=-sco3.2v2
-		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
-		;;
-	-udk*)
-		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
-		;;
-	-isc)
-		os=-isc2.2
-		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
-		;;
-	-clix*)
-		basic_machine=clipper-intergraph
-		;;
-	-isc*)
-		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
-		;;
-	-lynx*)
-		os=-lynxos
-		;;
-	-ptx*)
-		basic_machine=`echo $1 | sed -e 's/86-.*/86-sequent/'`
-		;;
-	-windowsnt*)
-		os=`echo $os | sed -e 's/windowsnt/winnt/'`
-		;;
-	-psos*)
-		os=-psos
-		;;
-	-mint | -mint[0-9]*)
-		basic_machine=m68k-atari
-		os=-mint
-		;;
-esac
-
-# Decode aliases for certain CPU-COMPANY combinations.
-case $basic_machine in
-	# Recognize the basic CPU types without company name.
-	# Some are omitted here because they have special meanings below.
-	1750a | 580 \
-	| a29k \
-	| alpha | alphaev[4-8] | alphaev56 | alphaev6[78] | alphapca5[67] \
-	| alpha64 | alpha64ev[4-8] | alpha64ev56 | alpha64ev6[78] | alpha64pca5[67] \
-	| am33_2.0 \
-	| arc | arm | arm[bl]e | arme[lb] | armv[2345] | armv[345][lb] | avr \
-	| bfin \
-	| c4x | clipper \
-	| d10v | d30v | dlx | dsp16xx \
-	| fr30 | frv \
-	| h8300 | h8500 | hppa | hppa1.[01] | hppa2.0 | hppa2.0[nw] | hppa64 \
-	| i370 | i860 | i960 | ia64 \
-	| ip2k | iq2000 \
-	| m32r | m32rle | m68000 | m68k | m88k | maxq | mb | microblaze | mcore \
-	| mips | mipsbe | mipseb | mipsel | mipsle \
-	| mips16 \
-	| mips64 | mips64el \
-	| mips64vr | mips64vrel \
-	| mips64orion | mips64orionel \
-	| mips64vr4100 | mips64vr4100el \
-	| mips64vr4300 | mips64vr4300el \
-	| mips64vr5000 | mips64vr5000el \
-	| mips64vr5900 | mips64vr5900el \
-	| mipsisa32 | mipsisa32el \
-	| mipsisa32r2 | mipsisa32r2el \
-	| mipsisa64 | mipsisa64el \
-	| mipsisa64r2 | mipsisa64r2el \
-	| mipsisa64sb1 | mipsisa64sb1el \
-	| mipsisa64sr71k | mipsisa64sr71kel \
-	| mipstx39 | mipstx39el \
-	| mn10200 | mn10300 \
-	| mt \
-	| msp430 \
-	| nios | nios2 \
-	| ns16k | ns32k \
-	| or32 \
-	| pdp10 | pdp11 | pj | pjl \
-	| powerpc | powerpc64 | powerpc64le | powerpcle | ppcbe \
-	| pyramid \
-	| sh | sh[1234] | sh[24]a | sh[23]e | sh[34]eb | shbe | shle | sh[1234]le | sh3ele \
-	| sh64 | sh64le \
-	| sparc | sparc64 | sparc64b | sparc86x | sparclet | sparclite \
-	| sparcv8 | sparcv9 | sparcv9b \
-	| strongarm \
-	| tahoe | thumb | tic4x | tic80 | tron \
-	| v850 | v850e \
-	| we32k \
-	| x86 | xscale | xscalee[bl] | xstormy16 | xtensa \
-	| z8k)
-		basic_machine=$basic_machine-unknown
-		;;
-	m32c)
-		basic_machine=$basic_machine-unknown
-		;;
-	m6811 | m68hc11 | m6812 | m68hc12)
-		# Motorola 68HC11/12.
-		basic_machine=$basic_machine-unknown
-		os=-none
-		;;
-	m88110 | m680[12346]0 | m683?2 | m68360 | m5200 | v70 | w65 | z8k)
-		;;
-	ms1)
-		basic_machine=mt-unknown
-		;;
-
-	# We use `pc' rather than `unknown'
-	# because (1) that's what they normally are, and
-	# (2) the word "unknown" tends to confuse beginning users.
-	i*86 | x86_64)
-	  basic_machine=$basic_machine-pc
-	  ;;
-	# Object if more than one company name word.
-	*-*-*)
-		echo Invalid configuration \`$1\': machine \`$basic_machine\' not recognized 1>&2
-		exit 1
-		;;
-	# Recognize the basic CPU types with company name.
-	580-* \
-	| a29k-* \
-	| alpha-* | alphaev[4-8]-* | alphaev56-* | alphaev6[78]-* \
-	| alpha64-* | alpha64ev[4-8]-* | alpha64ev56-* | alpha64ev6[78]-* \
-	| alphapca5[67]-* | alpha64pca5[67]-* | arc-* \
-	| arm-*  | armbe-* | armle-* | armeb-* | armv*-* \
-	| avr-* \
-	| bfin-* | bs2000-* \
-	| c[123]* | c30-* | [cjt]90-* | c4x-* | c54x-* | c55x-* | c6x-* \
-	| clipper-* | craynv-* | cydra-* \
-	| d10v-* | d30v-* | dlx-* \
-	| elxsi-* \
-	| f30[01]-* | f700-* | fr30-* | frv-* | fx80-* \
-	| h8300-* | h8500-* \
-	| hppa-* | hppa1.[01]-* | hppa2.0-* | hppa2.0[nw]-* | hppa64-* \
-	| i*86-* | i860-* | i960-* | ia64-* \
-	| ip2k-* | iq2000-* \
-	| m32r-* | m32rle-* \
-	| m68000-* | m680[012346]0-* | m68360-* | m683?2-* | m68k-* \
-	| m88110-* | m88k-* | maxq-* | mcore-* \
-	| mips-* | mipsbe-* | mipseb-* | mipsel-* | mipsle-* \
-	| mips16-* \
-	| mips64-* | mips64el-* \
-	| mips64vr-* | mips64vrel-* \
-	| mips64orion-* | mips64orionel-* \
-	| mips64vr4100-* | mips64vr4100el-* \
-	| mips64vr4300-* | mips64vr4300el-* \
-	| mips64vr5000-* | mips64vr5000el-* \
-	| mips64vr5900-* | mips64vr5900el-* \
-	| mipsisa32-* | mipsisa32el-* \
-	| mipsisa32r2-* | mipsisa32r2el-* \
-	| mipsisa64-* | mipsisa64el-* \
-	| mipsisa64r2-* | mipsisa64r2el-* \
-	| mipsisa64sb1-* | mipsisa64sb1el-* \
-	| mipsisa64sr71k-* | mipsisa64sr71kel-* \
-	| mipstx39-* | mipstx39el-* \
-	| mmix-* \
-	| mt-* \
-	| msp430-* \
-	| nios-* | nios2-* \
-	| none-* | np1-* | ns16k-* | ns32k-* \
-	| orion-* \
-	| pdp10-* | pdp11-* | pj-* | pjl-* | pn-* | power-* \
-	| powerpc-* | powerpc64-* | powerpc64le-* | powerpcle-* | ppcbe-* \
-	| pyramid-* \
-	| romp-* | rs6000-* \
-	| sh-* | sh[1234]-* | sh[24]a-* | sh[23]e-* | sh[34]eb-* | shbe-* \
-	| shle-* | sh[1234]le-* | sh3ele-* | sh64-* | sh64le-* \
-	| sparc-* | sparc64-* | sparc64b-* | sparc86x-* | sparclet-* \
-	| sparclite-* \
-	| sparcv8-* | sparcv9-* | sparcv9b-* | strongarm-* | sv1-* | sx?-* \
-	| tahoe-* | thumb-* \
-	| tic30-* | tic4x-* | tic54x-* | tic55x-* | tic6x-* | tic80-* \
-	| tron-* \
-	| v850-* | v850e-* | vax-* \
-	| we32k-* \
-	| x86-* | x86_64-* | xps100-* | xscale-* | xscalee[bl]-* \
-	| xstormy16-* | xtensa-* \
-	| ymp-* \
-	| z8k-*)
-		;;
-	m32c-*)
-		;;
-	# Recognize the various machine names and aliases which stand
-	# for a CPU type and a company and sometimes even an OS.
-	386bsd)
-		basic_machine=i386-unknown
-		os=-bsd
-		;;
-	3b1 | 7300 | 7300-att | att-7300 | pc7300 | safari | unixpc)
-		basic_machine=m68000-att
-		;;
-	3b*)
-		basic_machine=we32k-att
-		;;
-	a29khif)
-		basic_machine=a29k-amd
-		os=-udi
-		;;
-    	abacus)
-		basic_machine=abacus-unknown
-		;;
-	adobe68k)
-		basic_machine=m68010-adobe
-		os=-scout
-		;;
-	alliant | fx80)
-		basic_machine=fx80-alliant
-		;;
-	altos | altos3068)
-		basic_machine=m68k-altos
-		;;
-	am29k)
-		basic_machine=a29k-none
-		os=-bsd
-		;;
-	amd64)
-		basic_machine=x86_64-pc
-		;;
-	amd64-*)
-		basic_machine=x86_64-`echo $basic_machine | sed 's/^[^-]*-//'`
-		;;
-	amdahl)
-		basic_machine=580-amdahl
-		os=-sysv
-		;;
-	amiga | amiga-*)
-		basic_machine=m68k-unknown
-		;;
-	amigaos | amigados)
-		basic_machine=m68k-unknown
-		os=-amigaos
-		;;
-	amigaunix | amix)
-		basic_machine=m68k-unknown
-		os=-sysv4
-		;;
-	apollo68)
-		basic_machine=m68k-apollo
-		os=-sysv
-		;;
-	apollo68bsd)
-		basic_machine=m68k-apollo
-		os=-bsd
-		;;
-	aux)
-		basic_machine=m68k-apple
-		os=-aux
-		;;
-	balance)
-		basic_machine=ns32k-sequent
-		os=-dynix
-		;;
-	c90)
-		basic_machine=c90-cray
-		os=-unicos
-		;;
-	convex-c1)
-		basic_machine=c1-convex
-		os=-bsd
-		;;
-	convex-c2)
-		basic_machine=c2-convex
-		os=-bsd
-		;;
-	convex-c32)
-		basic_machine=c32-convex
-		os=-bsd
-		;;
-	convex-c34)
-		basic_machine=c34-convex
-		os=-bsd
-		;;
-	convex-c38)
-		basic_machine=c38-convex
-		os=-bsd
-		;;
-	cray | j90)
-		basic_machine=j90-cray
-		os=-unicos
-		;;
-	craynv)
-		basic_machine=craynv-cray
-		os=-unicosmp
-		;;
-	cr16c)
-		basic_machine=cr16c-unknown
-		os=-elf
-		;;
-	crds | unos)
-		basic_machine=m68k-crds
-		;;
-	crisv32 | crisv32-* | etraxfs*)
-		basic_machine=crisv32-axis
-		;;
-	cris | cris-* | etrax*)
-		basic_machine=cris-axis
-		;;
-	crx)
-		basic_machine=crx-unknown
-		os=-elf
-		;;
-	da30 | da30-*)
-		basic_machine=m68k-da30
-		;;
-	decstation | decstation-3100 | pmax | pmax-* | pmin | dec3100 | decstatn)
-		basic_machine=mips-dec
-		;;
-	decsystem10* | dec10*)
-		basic_machine=pdp10-dec
-		os=-tops10
-		;;
-	decsystem20* | dec20*)
-		basic_machine=pdp10-dec
-		os=-tops20
-		;;
-	delta | 3300 | motorola-3300 | motorola-delta \
-	      | 3300-motorola | delta-motorola)
-		basic_machine=m68k-motorola
-		;;
-	delta88)
-		basic_machine=m88k-motorola
-		os=-sysv3
-		;;
-	djgpp)
-		basic_machine=i586-pc
-		os=-msdosdjgpp
-		;;
-	dpx20 | dpx20-*)
-		basic_machine=rs6000-bull
-		os=-bosx
-		;;
-	dpx2* | dpx2*-bull)
-		basic_machine=m68k-bull
-		os=-sysv3
-		;;
-	ebmon29k)
-		basic_machine=a29k-amd
-		os=-ebmon
-		;;
-	elxsi)
-		basic_machine=elxsi-elxsi
-		os=-bsd
-		;;
-	encore | umax | mmax)
-		basic_machine=ns32k-encore
-		;;
-	es1800 | OSE68k | ose68k | ose | OSE)
-		basic_machine=m68k-ericsson
-		os=-ose
-		;;
-	fx2800)
-		basic_machine=i860-alliant
-		;;
-	genix)
-		basic_machine=ns32k-ns
-		;;
-	gmicro)
-		basic_machine=tron-gmicro
-		os=-sysv
-		;;
-	go32)
-		basic_machine=i386-pc
-		os=-go32
-		;;
-	h3050r* | hiux*)
-		basic_machine=hppa1.1-hitachi
-		os=-hiuxwe2
-		;;
-	h8300hms)
-		basic_machine=h8300-hitachi
-		os=-hms
-		;;
-	h8300xray)
-		basic_machine=h8300-hitachi
-		os=-xray
-		;;
-	h8500hms)
-		basic_machine=h8500-hitachi
-		os=-hms
-		;;
-	harris)
-		basic_machine=m88k-harris
-		os=-sysv3
-		;;
-	hp300-*)
-		basic_machine=m68k-hp
-		;;
-	hp300bsd)
-		basic_machine=m68k-hp
-		os=-bsd
-		;;
-	hp300hpux)
-		basic_machine=m68k-hp
-		os=-hpux
-		;;
-	hp3k9[0-9][0-9] | hp9[0-9][0-9])
-		basic_machine=hppa1.0-hp
-		;;
-	hp9k2[0-9][0-9] | hp9k31[0-9])
-		basic_machine=m68000-hp
-		;;
-	hp9k3[2-9][0-9])
-		basic_machine=m68k-hp
-		;;
-	hp9k6[0-9][0-9] | hp6[0-9][0-9])
-		basic_machine=hppa1.0-hp
-		;;
-	hp9k7[0-79][0-9] | hp7[0-79][0-9])
-		basic_machine=hppa1.1-hp
-		;;
-	hp9k78[0-9] | hp78[0-9])
-		# FIXME: really hppa2.0-hp
-		basic_machine=hppa1.1-hp
-		;;
-	hp9k8[67]1 | hp8[67]1 | hp9k80[24] | hp80[24] | hp9k8[78]9 | hp8[78]9 | hp9k893 | hp893)
-		# FIXME: really hppa2.0-hp
-		basic_machine=hppa1.1-hp
-		;;
-	hp9k8[0-9][13679] | hp8[0-9][13679])
-		basic_machine=hppa1.1-hp
-		;;
-	hp9k8[0-9][0-9] | hp8[0-9][0-9])
-		basic_machine=hppa1.0-hp
-		;;
-	hppa-next)
-		os=-nextstep3
-		;;
-	hppaosf)
-		basic_machine=hppa1.1-hp
-		os=-osf
-		;;
-	hppro)
-		basic_machine=hppa1.1-hp
-		os=-proelf
-		;;
-	i370-ibm* | ibm*)
-		basic_machine=i370-ibm
-		;;
-# I'm not sure what "Sysv32" means.  Should this be sysv3.2?
-	i*86v32)
-		basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
-		os=-sysv32
-		;;
-	i*86v4*)
-		basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
-		os=-sysv4
-		;;
-	i*86v)
-		basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
-		os=-sysv
-		;;
-	i*86sol2)
-		basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
-		os=-solaris2
-		;;
-	i386mach)
-		basic_machine=i386-mach
-		os=-mach
-		;;
-	i386-vsta | vsta)
-		basic_machine=i386-unknown
-		os=-vsta
-		;;
-	iris | iris4d)
-		basic_machine=mips-sgi
-		case $os in
-		    -irix*)
-			;;
-		    *)
-			os=-irix4
-			;;
-		esac
-		;;
-	isi68 | isi)
-		basic_machine=m68k-isi
-		os=-sysv
-		;;
-	m88k-omron*)
-		basic_machine=m88k-omron
-		;;
-	magnum | m3230)
-		basic_machine=mips-mips
-		os=-sysv
-		;;
-	merlin)
-		basic_machine=ns32k-utek
-		os=-sysv
-		;;
-	mingw32)
-		basic_machine=i386-pc
-		os=-mingw32
-		;;
-	miniframe)
-		basic_machine=m68000-convergent
-		;;
-	*mint | -mint[0-9]* | *MiNT | *MiNT[0-9]*)
-		basic_machine=m68k-atari
-		os=-mint
-		;;
-	mips3*-*)
-		basic_machine=`echo $basic_machine | sed -e 's/mips3/mips64/'`
-		;;
-	mips3*)
-		basic_machine=`echo $basic_machine | sed -e 's/mips3/mips64/'`-unknown
-		;;
-	monitor)
-		basic_machine=m68k-rom68k
-		os=-coff
-		;;
-	morphos)
-		basic_machine=powerpc-unknown
-		os=-morphos
-		;;
-	msdos)
-		basic_machine=i386-pc
-		os=-msdos
-		;;
-	ms1-*)
-		basic_machine=`echo $basic_machine | sed -e 's/ms1-/mt-/'`
-		;;
-	mvs)
-		basic_machine=i370-ibm
-		os=-mvs
-		;;
-	ncr3000)
-		basic_machine=i486-ncr
-		os=-sysv4
-		;;
-	netbsd386)
-		basic_machine=i386-unknown
-		os=-netbsd
-		;;
-	netwinder)
-		basic_machine=armv4l-rebel
-		os=-linux
-		;;
-	news | news700 | news800 | news900)
-		basic_machine=m68k-sony
-		os=-newsos
-		;;
-	news1000)
-		basic_machine=m68030-sony
-		os=-newsos
-		;;
-	news-3600 | risc-news)
-		basic_machine=mips-sony
-		os=-newsos
-		;;
-	necv70)
-		basic_machine=v70-nec
-		os=-sysv
-		;;
-	next | m*-next )
-		basic_machine=m68k-next
-		case $os in
-		    -nextstep* )
-			;;
-		    -ns2*)
-		      os=-nextstep2
-			;;
-		    *)
-		      os=-nextstep3
-			;;
-		esac
-		;;
-	nh3000)
-		basic_machine=m68k-harris
-		os=-cxux
-		;;
-	nh[45]000)
-		basic_machine=m88k-harris
-		os=-cxux
-		;;
-	nindy960)
-		basic_machine=i960-intel
-		os=-nindy
-		;;
-	mon960)
-		basic_machine=i960-intel
-		os=-mon960
-		;;
-	nonstopux)
-		basic_machine=mips-compaq
-		os=-nonstopux
-		;;
-	np1)
-		basic_machine=np1-gould
-		;;
-	nsr-tandem)
-		basic_machine=nsr-tandem
-		;;
-	op50n-* | op60c-*)
-		basic_machine=hppa1.1-oki
-		os=-proelf
-		;;
-	openrisc | openrisc-*)
-		basic_machine=or32-unknown
-		;;
-	os400)
-		basic_machine=powerpc-ibm
-		os=-os400
-		;;
-	OSE68000 | ose68000)
-		basic_machine=m68000-ericsson
-		os=-ose
-		;;
-	os68k)
-		basic_machine=m68k-none
-		os=-os68k
-		;;
-	pa-hitachi)
-		basic_machine=hppa1.1-hitachi
-		os=-hiuxwe2
-		;;
-	paragon)
-		basic_machine=i860-intel
-		os=-osf
-		;;
-	pbd)
-		basic_machine=sparc-tti
-		;;
-	pbb)
-		basic_machine=m68k-tti
-		;;
-	pc532 | pc532-*)
-		basic_machine=ns32k-pc532
-		;;
-	pc98)
-		basic_machine=i386-pc
-		;;
-	pc98-*)
-		basic_machine=i386-`echo $basic_machine | sed 's/^[^-]*-//'`
-		;;
-	pentium | p5 | k5 | k6 | nexgen | viac3)
-		basic_machine=i586-pc
-		;;
-	pentiumpro | p6 | 6x86 | athlon | athlon_*)
-		basic_machine=i686-pc
-		;;
-	pentiumii | pentium2 | pentiumiii | pentium3)
-		basic_machine=i686-pc
-		;;
-	pentium4)
-		basic_machine=i786-pc
-		;;
-	pentium-* | p5-* | k5-* | k6-* | nexgen-* | viac3-*)
-		basic_machine=i586-`echo $basic_machine | sed 's/^[^-]*-//'`
-		;;
-	pentiumpro-* | p6-* | 6x86-* | athlon-*)
-		basic_machine=i686-`echo $basic_machine | sed 's/^[^-]*-//'`
-		;;
-	pentiumii-* | pentium2-* | pentiumiii-* | pentium3-*)
-		basic_machine=i686-`echo $basic_machine | sed 's/^[^-]*-//'`
-		;;
-	pentium4-*)
-		basic_machine=i786-`echo $basic_machine | sed 's/^[^-]*-//'`
-		;;
-	pn)
-		basic_machine=pn-gould
-		;;
-	power)	basic_machine=power-ibm
-		;;
-	ppc)	basic_machine=powerpc-unknown
-		;;
-	ppc-*)	basic_machine=powerpc-`echo $basic_machine | sed 's/^[^-]*-//'`
-		;;
-	ppcle | powerpclittle | ppc-le | powerpc-little)
-		basic_machine=powerpcle-unknown
-		;;
-	ppcle-* | powerpclittle-*)
-		basic_machine=powerpcle-`echo $basic_machine | sed 's/^[^-]*-//'`
-		;;
-	ppc64)	basic_machine=powerpc64-unknown
-		;;
-	ppc64-*) basic_machine=powerpc64-`echo $basic_machine | sed 's/^[^-]*-//'`
-		;;
-	ppc64le | powerpc64little | ppc64-le | powerpc64-little)
-		basic_machine=powerpc64le-unknown
-		;;
-	ppc64le-* | powerpc64little-*)
-		basic_machine=powerpc64le-`echo $basic_machine | sed 's/^[^-]*-//'`
-		;;
-	ps2)
-		basic_machine=i386-ibm
-		;;
-	pw32)
-		basic_machine=i586-unknown
-		os=-pw32
-		;;
-	rdos)
-		basic_machine=i386-pc
-		os=-rdos
-		;;
-	rom68k)
-		basic_machine=m68k-rom68k
-		os=-coff
-		;;
-	rm[46]00)
-		basic_machine=mips-siemens
-		;;
-	rtpc | rtpc-*)
-		basic_machine=romp-ibm
-		;;
-	s390 | s390-*)
-		basic_machine=s390-ibm
-		;;
-	s390x | s390x-*)
-		basic_machine=s390x-ibm
-		;;
-	sa29200)
-		basic_machine=a29k-amd
-		os=-udi
-		;;
-	sb1)
-		basic_machine=mipsisa64sb1-unknown
-		;;
-	sb1el)
-		basic_machine=mipsisa64sb1el-unknown
-		;;
-	sei)
-		basic_machine=mips-sei
-		os=-seiux
-		;;
-	sequent)
-		basic_machine=i386-sequent
-		;;
-	sh)
-		basic_machine=sh-hitachi
-		os=-hms
-		;;
-	sh64)
-		basic_machine=sh64-unknown
-		;;
-	sparclite-wrs | simso-wrs)
-		basic_machine=sparclite-wrs
-		os=-vxworks
-		;;
-	sps7)
-		basic_machine=m68k-bull
-		os=-sysv2
-		;;
-	spur)
-		basic_machine=spur-unknown
-		;;
-	st2000)
-		basic_machine=m68k-tandem
-		;;
-	stratus)
-		basic_machine=i860-stratus
-		os=-sysv4
-		;;
-	sun2)
-		basic_machine=m68000-sun
-		;;
-	sun2os3)
-		basic_machine=m68000-sun
-		os=-sunos3
-		;;
-	sun2os4)
-		basic_machine=m68000-sun
-		os=-sunos4
-		;;
-	sun3os3)
-		basic_machine=m68k-sun
-		os=-sunos3
-		;;
-	sun3os4)
-		basic_machine=m68k-sun
-		os=-sunos4
-		;;
-	sun4os3)
-		basic_machine=sparc-sun
-		os=-sunos3
-		;;
-	sun4os4)
-		basic_machine=sparc-sun
-		os=-sunos4
-		;;
-	sun4sol2)
-		basic_machine=sparc-sun
-		os=-solaris2
-		;;
-	sun3 | sun3-*)
-		basic_machine=m68k-sun
-		;;
-	sun4)
-		basic_machine=sparc-sun
-		;;
-	sun386 | sun386i | roadrunner)
-		basic_machine=i386-sun
-		;;
-	sv1)
-		basic_machine=sv1-cray
-		os=-unicos
-		;;
-	symmetry)
-		basic_machine=i386-sequent
-		os=-dynix
-		;;
-	t3e)
-		basic_machine=alphaev5-cray
-		os=-unicos
-		;;
-	t90)
-		basic_machine=t90-cray
-		os=-unicos
-		;;
-	tic54x | c54x*)
-		basic_machine=tic54x-unknown
-		os=-coff
-		;;
-	tic55x | c55x*)
-		basic_machine=tic55x-unknown
-		os=-coff
-		;;
-	tic6x | c6x*)
-		basic_machine=tic6x-unknown
-		os=-coff
-		;;
-	tx39)
-		basic_machine=mipstx39-unknown
-		;;
-	tx39el)
-		basic_machine=mipstx39el-unknown
-		;;
-	toad1)
-		basic_machine=pdp10-xkl
-		os=-tops20
-		;;
-	tower | tower-32)
-		basic_machine=m68k-ncr
-		;;
-	tpf)
-		basic_machine=s390x-ibm
-		os=-tpf
-		;;
-	udi29k)
-		basic_machine=a29k-amd
-		os=-udi
-		;;
-	ultra3)
-		basic_machine=a29k-nyu
-		os=-sym1
-		;;
-	v810 | necv810)
-		basic_machine=v810-nec
-		os=-none
-		;;
-	vaxv)
-		basic_machine=vax-dec
-		os=-sysv
-		;;
-	vms)
-		basic_machine=vax-dec
-		os=-vms
-		;;
-	vpp*|vx|vx-*)
-		basic_machine=f301-fujitsu
-		;;
-	vxworks960)
-		basic_machine=i960-wrs
-		os=-vxworks
-		;;
-	vxworks68)
-		basic_machine=m68k-wrs
-		os=-vxworks
-		;;
-	vxworks29k)
-		basic_machine=a29k-wrs
-		os=-vxworks
-		;;
-	w65*)
-		basic_machine=w65-wdc
-		os=-none
-		;;
-	w89k-*)
-		basic_machine=hppa1.1-winbond
-		os=-proelf
-		;;
-	xbox)
-		basic_machine=i686-pc
-		os=-mingw32
-		;;
-	xps | xps100)
-		basic_machine=xps100-honeywell
-		;;
-	ymp)
-		basic_machine=ymp-cray
-		os=-unicos
-		;;
-	z8k-*-coff)
-		basic_machine=z8k-unknown
-		os=-sim
-		;;
-	none)
-		basic_machine=none-none
-		os=-none
-		;;
-
-# Here we handle the default manufacturer of certain CPU types.  It is in
-# some cases the only manufacturer, in others, it is the most popular.
-	w89k)
-		basic_machine=hppa1.1-winbond
-		;;
-	op50n)
-		basic_machine=hppa1.1-oki
-		;;
-	op60c)
-		basic_machine=hppa1.1-oki
-		;;
-	romp)
-		basic_machine=romp-ibm
-		;;
-	mmix)
-		basic_machine=mmix-knuth
-		;;
-	rs6000)
-		basic_machine=rs6000-ibm
-		;;
-	vax)
-		basic_machine=vax-dec
-		;;
-	pdp10)
-		# there are many clones, so DEC is not a safe bet
-		basic_machine=pdp10-unknown
-		;;
-	pdp11)
-		basic_machine=pdp11-dec
-		;;
-	we32k)
-		basic_machine=we32k-att
-		;;
-	sh[1234] | sh[24]a | sh[34]eb | sh[1234]le | sh[23]ele)
-		basic_machine=sh-unknown
-		;;
-	sparc | sparcv8 | sparcv9 | sparcv9b)
-		basic_machine=sparc-sun
-		;;
-	cydra)
-		basic_machine=cydra-cydrome
-		;;
-	orion)
-		basic_machine=orion-highlevel
-		;;
-	orion105)
-		basic_machine=clipper-highlevel
-		;;
-	mac | mpw | mac-mpw)
-		basic_machine=m68k-apple
-		;;
-	pmac | pmac-mpw)
-		basic_machine=powerpc-apple
-		;;
-	*-unknown)
-		# Make sure to match an already-canonicalized machine name.
-		;;
-	*)
-		echo Invalid configuration \`$1\': machine \`$basic_machine\' not recognized 1>&2
-		exit 1
-		;;
-esac
-
-# Here we canonicalize certain aliases for manufacturers.
-case $basic_machine in
-	*-digital*)
-		basic_machine=`echo $basic_machine | sed 's/digital.*/dec/'`
-		;;
-	*-commodore*)
-		basic_machine=`echo $basic_machine | sed 's/commodore.*/cbm/'`
-		;;
-	*)
-		;;
-esac
-
-# Decode manufacturer-specific aliases for certain operating systems.
-
-if [ x"$os" != x"" ]
-then
-case $os in
-        # First match some system type aliases
-        # that might get confused with valid system types.
-	# -solaris* is a basic system type, with this one exception.
-	-solaris1 | -solaris1.*)
-		os=`echo $os | sed -e 's|solaris1|sunos4|'`
-		;;
-	-solaris)
-		os=-solaris2
-		;;
-	-svr4*)
-		os=-sysv4
-		;;
-	-unixware*)
-		os=-sysv4.2uw
-		;;
-	-gnu/linux*)
-		os=`echo $os | sed -e 's|gnu/linux|linux-gnu|'`
-		;;
-	# First accept the basic system types.
-	# The portable systems comes first.
-	# Each alternative MUST END IN A *, to match a version number.
-	# -sysv* is not here because it comes later, after sysvr4.
-	-gnu* | -bsd* | -mach* | -minix* | -genix* | -ultrix* | -irix* \
-	      | -*vms* | -sco* | -esix* | -isc* | -aix* | -sunos | -sunos[34]*\
-	      | -hpux* | -unos* | -osf* | -luna* | -dgux* | -solaris* | -sym* \
-	      | -amigaos* | -amigados* | -msdos* | -newsos* | -unicos* | -aof* \
-	      | -aos* \
-	      | -nindy* | -vxsim* | -vxworks* | -ebmon* | -hms* | -mvs* \
-	      | -clix* | -riscos* | -uniplus* | -iris* | -rtu* | -xenix* \
-	      | -hiux* | -386bsd* | -knetbsd* | -mirbsd* | -netbsd* \
-	      | -openbsd* | -solidbsd* \
-	      | -ekkobsd* | -kfreebsd* | -freebsd* | -riscix* | -lynxos* \
-	      | -bosx* | -nextstep* | -cxux* | -aout* | -elf* | -oabi* \
-	      | -ptx* | -coff* | -ecoff* | -winnt* | -domain* | -vsta* \
-	      | -udi* | -eabi* | -lites* | -ieee* | -go32* | -aux* \
-	      | -chorusos* | -chorusrdb* \
-	      | -cygwin* | -pe* | -psos* | -moss* | -proelf* | -rtems* \
-	      | -mingw32* | -linux-gnu* | -linux-newlib* | -linux-uclibc* \
-	      | -uxpv* | -beos* | -mpeix* | -udk* \
-	      | -interix* | -uwin* | -mks* | -rhapsody* | -darwin* | -opened* \
-	      | -openstep* | -oskit* | -conix* | -pw32* | -nonstopux* \
-	      | -storm-chaos* | -tops10* | -tenex* | -tops20* | -its* \
-	      | -os2* | -vos* | -palmos* | -uclinux* | -nucleus* \
-	      | -morphos* | -superux* | -rtmk* | -rtmk-nova* | -windiss* \
-	      | -powermax* | -dnix* | -nx6 | -nx7 | -sei* | -dragonfly* \
-	      | -skyos* | -haiku* | -rdos*)
-	# Remember, each alternative MUST END IN *, to match a version number.
-		;;
-	-qnx*)
-		case $basic_machine in
-		    x86-* | i*86-*)
-			;;
-		    *)
-			os=-nto$os
-			;;
-		esac
-		;;
-	-nto-qnx*)
-		;;
-	-nto*)
-		os=`echo $os | sed -e 's|nto|nto-qnx|'`
-		;;
-	-sim | -es1800* | -hms* | -xray | -os68k* | -none* | -v88r* \
-	      | -windows* | -osx | -abug | -netware* | -os9* | -beos* | -haiku* \
-	      | -macos* | -mpw* | -magic* | -mmixware* | -mon960* | -lnews*)
-		;;
-	-mac*)
-		os=`echo $os | sed -e 's|mac|macos|'`
-		;;
-	-linux-dietlibc)
-		os=-linux-dietlibc
-		;;
-	-linux*)
-		os=`echo $os | sed -e 's|linux|linux-gnu|'`
-		;;
-	-sunos5*)
-		os=`echo $os | sed -e 's|sunos5|solaris2|'`
-		;;
-	-sunos6*)
-		os=`echo $os | sed -e 's|sunos6|solaris3|'`
-		;;
-	-opened*)
-		os=-openedition
-		;;
-        -os400*)
-		os=-os400
-		;;
-	-wince*)
-		os=-wince
-		;;
-	-osfrose*)
-		os=-osfrose
-		;;
-	-osf*)
-		os=-osf
-		;;
-	-utek*)
-		os=-bsd
-		;;
-	-dynix*)
-		os=-bsd
-		;;
-	-acis*)
-		os=-aos
-		;;
-	-atheos*)
-		os=-atheos
-		;;
-	-syllable*)
-		os=-syllable
-		;;
-	-386bsd)
-		os=-bsd
-		;;
-	-ctix* | -uts*)
-		os=-sysv
-		;;
-	-nova*)
-		os=-rtmk-nova
-		;;
-	-ns2 )
-		os=-nextstep2
-		;;
-	-nsk*)
-		os=-nsk
-		;;
-	# Preserve the version number of sinix5.
-	-sinix5.*)
-		os=`echo $os | sed -e 's|sinix|sysv|'`
-		;;
-	-sinix*)
-		os=-sysv4
-		;;
-        -tpf*)
-		os=-tpf
-		;;
-	-triton*)
-		os=-sysv3
-		;;
-	-oss*)
-		os=-sysv3
-		;;
-	-svr4)
-		os=-sysv4
-		;;
-	-svr3)
-		os=-sysv3
-		;;
-	-sysvr4)
-		os=-sysv4
-		;;
-	# This must come after -sysvr4.
-	-sysv*)
-		;;
-	-ose*)
-		os=-ose
-		;;
-	-es1800*)
-		os=-ose
-		;;
-	-xenix)
-		os=-xenix
-		;;
-	-*mint | -mint[0-9]* | -*MiNT | -MiNT[0-9]*)
-		os=-mint
-		;;
-	-aros*)
-		os=-aros
-		;;
-	-kaos*)
-		os=-kaos
-		;;
-	-zvmoe)
-		os=-zvmoe
-		;;
-	-none)
-		;;
-	*)
-		# Get rid of the `-' at the beginning of $os.
-		os=`echo $os | sed 's/[^-]*-//'`
-		echo Invalid configuration \`$1\': system \`$os\' not recognized 1>&2
-		exit 1
-		;;
-esac
-else
-
-# Here we handle the default operating systems that come with various machines.
-# The value should be what the vendor currently ships out the door with their
-# machine or put another way, the most popular os provided with the machine.
-
-# Note that if you're going to try to match "-MANUFACTURER" here (say,
-# "-sun"), then you have to tell the case statement up towards the top
-# that MANUFACTURER isn't an operating system.  Otherwise, code above
-# will signal an error saying that MANUFACTURER isn't an operating
-# system, and we'll never get to this point.
-
-case $basic_machine in
-	*-acorn)
-		os=-riscix1.2
-		;;
-	arm*-rebel)
-		os=-linux
-		;;
-	arm*-semi)
-		os=-aout
-		;;
-    c4x-* | tic4x-*)
-        os=-coff
-        ;;
-	# This must come before the *-dec entry.
-	pdp10-*)
-		os=-tops20
-		;;
-	pdp11-*)
-		os=-none
-		;;
-	*-dec | vax-*)
-		os=-ultrix4.2
-		;;
-	m68*-apollo)
-		os=-domain
-		;;
-	i386-sun)
-		os=-sunos4.0.2
-		;;
-	m68000-sun)
-		os=-sunos3
-		# This also exists in the configure program, but was not the
-		# default.
-		# os=-sunos4
-		;;
-	m68*-cisco)
-		os=-aout
-		;;
-	mips*-cisco)
-		os=-elf
-		;;
-	mips*-*)
-		os=-elf
-		;;
-	or32-*)
-		os=-coff
-		;;
-	*-tti)	# must be before sparc entry or we get the wrong os.
-		os=-sysv3
-		;;
-	sparc-* | *-sun)
-		os=-sunos4.1.1
-		;;
-	*-be)
-		os=-beos
-		;;
-	*-haiku)
-		os=-haiku
-		;;
-	*-ibm)
-		os=-aix
-		;;
-    	*-knuth)
-		os=-mmixware
-		;;
-	*-wec)
-		os=-proelf
-		;;
-	*-winbond)
-		os=-proelf
-		;;
-	*-oki)
-		os=-proelf
-		;;
-	*-hp)
-		os=-hpux
-		;;
-	*-hitachi)
-		os=-hiux
-		;;
-	i860-* | *-att | *-ncr | *-altos | *-motorola | *-convergent)
-		os=-sysv
-		;;
-	*-cbm)
-		os=-amigaos
-		;;
-	*-dg)
-		os=-dgux
-		;;
-	*-dolphin)
-		os=-sysv3
-		;;
-	m68k-ccur)
-		os=-rtu
-		;;
-	m88k-omron*)
-		os=-luna
-		;;
-	*-next )
-		os=-nextstep
-		;;
-	*-sequent)
-		os=-ptx
-		;;
-	*-crds)
-		os=-unos
-		;;
-	*-ns)
-		os=-genix
-		;;
-	i370-*)
-		os=-mvs
-		;;
-	*-next)
-		os=-nextstep3
-		;;
-	*-gould)
-		os=-sysv
-		;;
-	*-highlevel)
-		os=-bsd
-		;;
-	*-encore)
-		os=-bsd
-		;;
-	*-sgi)
-		os=-irix
-		;;
-	*-siemens)
-		os=-sysv4
-		;;
-	*-masscomp)
-		os=-rtu
-		;;
-	f30[01]-fujitsu | f700-fujitsu)
-		os=-uxpv
-		;;
-	*-rom68k)
-		os=-coff
-		;;
-	*-*bug)
-		os=-coff
-		;;
-	*-apple)
-		os=-macos
-		;;
-	*-atari*)
-		os=-mint
-		;;
-	*)
-		os=-none
-		;;
-esac
-fi
-
-# Here we handle the case where we know the os, and the CPU type, but not the
-# manufacturer.  We pick the logical manufacturer.
-vendor=unknown
-case $basic_machine in
-	*-unknown)
-		case $os in
-			-riscix*)
-				vendor=acorn
-				;;
-			-sunos*)
-				vendor=sun
-				;;
-			-aix*)
-				vendor=ibm
-				;;
-			-beos*)
-				vendor=be
-				;;
-			-hpux*)
-				vendor=hp
-				;;
-			-mpeix*)
-				vendor=hp
-				;;
-			-hiux*)
-				vendor=hitachi
-				;;
-			-unos*)
-				vendor=crds
-				;;
-			-dgux*)
-				vendor=dg
-				;;
-			-luna*)
-				vendor=omron
-				;;
-			-genix*)
-				vendor=ns
-				;;
-			-mvs* | -opened*)
-				vendor=ibm
-				;;
-			-os400*)
-				vendor=ibm
-				;;
-			-ptx*)
-				vendor=sequent
-				;;
-			-tpf*)
-				vendor=ibm
-				;;
-			-vxsim* | -vxworks* | -windiss*)
-				vendor=wrs
-				;;
-			-aux*)
-				vendor=apple
-				;;
-			-hms*)
-				vendor=hitachi
-				;;
-			-mpw* | -macos*)
-				vendor=apple
-				;;
-			-*mint | -mint[0-9]* | -*MiNT | -MiNT[0-9]*)
-				vendor=atari
-				;;
-			-vos*)
-				vendor=stratus
-				;;
-		esac
-		basic_machine=`echo $basic_machine | sed "s/unknown/$vendor/"`
-		;;
-esac
-
-echo $basic_machine$os
-exit
-
-# Local variables:
-# eval: (add-hook 'write-file-hooks 'time-stamp)
-# time-stamp-start: "timestamp='"
-# time-stamp-format: "%:y-%02m-%02d"
-# time-stamp-end: "'"
-# End:
diff --git a/graphics/epix/configure b/graphics/epix/configure
deleted file mode 100644
index 14efb92c86..0000000000
--- a/graphics/epix/configure
+++ /dev/null
@@ -1,6396 +0,0 @@
-#! /bin/sh
-# Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.60 for epix 1.2.1.
-#
-# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
-# 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
-# This configure script is free software; the Free Software Foundation
-# gives unlimited permission to copy, distribute and modify it.
-## --------------------- ##
-## M4sh Initialization.  ##
-## --------------------- ##
-
-# Be Bourne compatible
-if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then
-  emulate sh
-  NULLCMD=:
-  # Zsh 3.x and 4.x performs word splitting on ${1+"$@"}, which
-  # is contrary to our usage.  Disable this feature.
-  alias -g '${1+"$@"}'='"$@"'
-  setopt NO_GLOB_SUBST
-else
-  case `(set -o) 2>/dev/null` in *posix*) set -o posix;; esac
-fi
-BIN_SH=xpg4; export BIN_SH # for Tru64
-DUALCASE=1; export DUALCASE # for MKS sh
-
-
-# PATH needs CR
-# Avoid depending upon Character Ranges.
-as_cr_letters='abcdefghijklmnopqrstuvwxyz'
-as_cr_LETTERS='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
-as_cr_Letters=$as_cr_letters$as_cr_LETTERS
-as_cr_digits='0123456789'
-as_cr_alnum=$as_cr_Letters$as_cr_digits
-
-# The user is always right.
-if test "${PATH_SEPARATOR+set}" != set; then
-  echo "#! /bin/sh" >conf$$.sh
-  echo  "exit 0"   >>conf$$.sh
-  chmod +x conf$$.sh
-  if (PATH="/nonexistent;."; conf$$.sh) >/dev/null 2>&1; then
-    PATH_SEPARATOR=';'
-  else
-    PATH_SEPARATOR=:
-  fi
-  rm -f conf$$.sh
-fi
-
-# Support unset when possible.
-if ( (MAIL=60; unset MAIL) || exit) >/dev/null 2>&1; then
-  as_unset=unset
-else
-  as_unset=false
-fi
-
-
-# IFS
-# We need space, tab and new line, in precisely that order.  Quoting is
-# there to prevent editors from complaining about space-tab.
-# (If _AS_PATH_WALK were called with IFS unset, it would disable word
-# splitting by setting IFS to empty value.)
-as_nl='
-'
-IFS=" ""	$as_nl"
-
-# Find who we are.  Look in the path if we contain no directory separator.
-case $0 in
-  *[\\/]* ) as_myself=$0 ;;
-  *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
-  IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
-  test -r "$as_dir/$0" && as_myself=$as_dir/$0 && break
-done
-IFS=$as_save_IFS
-
-     ;;
-esac
-# We did not find ourselves, most probably we were run as `sh COMMAND'
-# in which case we are not to be found in the path.
-if test "x$as_myself" = x; then
-  as_myself=$0
-fi
-if test ! -f "$as_myself"; then
-  echo "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2
-  { (exit 1); exit 1; }
-fi
-
-# Work around bugs in pre-3.0 UWIN ksh.
-for as_var in ENV MAIL MAILPATH
-do ($as_unset $as_var) >/dev/null 2>&1 && $as_unset $as_var
-done
-PS1='$ '
-PS2='> '
-PS4='+ '
-
-# NLS nuisances.
-for as_var in \
-  LANG LANGUAGE LC_ADDRESS LC_ALL LC_COLLATE LC_CTYPE LC_IDENTIFICATION \
-  LC_MEASUREMENT LC_MESSAGES LC_MONETARY LC_NAME LC_NUMERIC LC_PAPER \
-  LC_TELEPHONE LC_TIME
-do
-  if (set +x; test -z "`(eval $as_var=C; export $as_var) 2>&1`"); then
-    eval $as_var=C; export $as_var
-  else
-    ($as_unset $as_var) >/dev/null 2>&1 && $as_unset $as_var
-  fi
-done
-
-# Required to use basename.
-if expr a : '\(a\)' >/dev/null 2>&1 &&
-   test "X`expr 00001 : '.*\(...\)'`" = X001; then
-  as_expr=expr
-else
-  as_expr=false
-fi
-
-if (basename -- /) >/dev/null 2>&1 && test "X`basename -- / 2>&1`" = "X/"; then
-  as_basename=basename
-else
-  as_basename=false
-fi
-
-
-# Name of the executable.
-as_me=`$as_basename -- "$0" ||
-$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \
-	 X"$0" : 'X\(//\)$' \| \
-	 X"$0" : 'X\(/\)' \| . 2>/dev/null ||
-echo X/"$0" |
-    sed '/^.*\/\([^/][^/]*\)\/*$/{
-	    s//\1/
-	    q
-	  }
-	  /^X\/\(\/\/\)$/{
-	    s//\1/
-	    q
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-IFS=$as_save_IFS
-
-} >&5
-
-cat >&5 <<_ACEOF
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-
-## ----------- ##
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-
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-	case $ac_arg in
-	  *=* | --config-cache | -C | -disable-* | --disable-* \
-	  | -enable-* | --enable-* | -gas | --g* | -nfp | --nf* \
-	  | -q | -quiet | --q* | -silent | --sil* | -v | -verb* \
-	  | -with-* | --with-* | -without-* | --without-* | --x)
-	    case "$ac_configure_args0 " in
-	      "$ac_configure_args1"*" '$ac_arg' "* ) continue ;;
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-	    ;;
-	  -* ) ac_must_keep_next=true ;;
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-      ac_configure_args="$ac_configure_args '$ac_arg'"
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-    cat <<\_ASBOX
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-    if test -n "$ac_subst_files"; then
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-      echo
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-
-    if test -s confdefs.h; then
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-## ----------- ##
-_ASBOX
-      echo
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-ac_signal=0
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-# Predefined preprocessor variables.
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-cat >>confdefs.h <<_ACEOF
-#define PACKAGE_NAME "$PACKAGE_NAME"
-_ACEOF
-
-
-cat >>confdefs.h <<_ACEOF
-#define PACKAGE_TARNAME "$PACKAGE_TARNAME"
-_ACEOF
-
-
-cat >>confdefs.h <<_ACEOF
-#define PACKAGE_VERSION "$PACKAGE_VERSION"
-_ACEOF
-
-
-cat >>confdefs.h <<_ACEOF
-#define PACKAGE_STRING "$PACKAGE_STRING"
-_ACEOF
-
-
-cat >>confdefs.h <<_ACEOF
-#define PACKAGE_BUGREPORT "$PACKAGE_BUGREPORT"
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-
-# Let the site file select an alternate cache file if it wants to.
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-  set x "$ac_default_prefix/share/config.site" \
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-shift
-for ac_site_file
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-  if test -r "$ac_site_file"; then
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-echo "$as_me: loading site script $ac_site_file" >&6;}
-    sed 's/^/| /' "$ac_site_file" >&5
-    . "$ac_site_file"
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-
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-echo "$as_me: loading cache $cache_file" >&6;}
-    case $cache_file in
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-  { echo "$as_me:$LINENO: creating cache $cache_file" >&5
-echo "$as_me: creating cache $cache_file" >&6;}
-  >$cache_file
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-# Check that the precious variables saved in the cache have kept the same
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-ac_cache_corrupted=false
-for ac_var in $ac_precious_vars; do
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-      { echo "$as_me:$LINENO: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&5
-echo "$as_me: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&2;}
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-      ac_cache_corrupted=: ;;
-    ,);;
-    *)
-      if test "x$ac_old_val" != "x$ac_new_val"; then
-	{ echo "$as_me:$LINENO: error: \`$ac_var' has changed since the previous run:" >&5
-echo "$as_me: error: \`$ac_var' has changed since the previous run:" >&2;}
-	{ echo "$as_me:$LINENO:   former value:  $ac_old_val" >&5
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-	ac_cache_corrupted=:
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-if $ac_cache_corrupted; then
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-  { { echo "$as_me:$LINENO: error: run \`make distclean' and/or \`rm $cache_file' and start over" >&5
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-   { (exit 1); exit 1; }; }
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-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
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-
-
-
-am__api_version="1.9"
-ac_aux_dir=
-for ac_dir in "$srcdir" "$srcdir/.." "$srcdir/../.."; do
-  if test -f "$ac_dir/install-sh"; then
-    ac_aux_dir=$ac_dir
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-    ac_aux_dir=$ac_dir
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-    break
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-    ac_aux_dir=$ac_dir
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-if test -z "$ac_aux_dir"; then
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-   { (exit 1); exit 1; }; }
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-ac_config_guess="$SHELL $ac_aux_dir/config.guess"  # Please don't use this var.
-ac_config_sub="$SHELL $ac_aux_dir/config.sub"  # Please don't use this var.
-ac_configure="$SHELL $ac_aux_dir/configure"  # Please don't use this var.
-
-
-# Find a good install program.  We prefer a C program (faster),
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-# SysV /etc/install, /usr/sbin/install
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-    for ac_prog in ginstall scoinst install; do
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-	if { test -f "$as_dir/$ac_prog$ac_exec_ext" && $as_executable_p "$as_dir/$ac_prog$ac_exec_ext"; }; then
-	  if test $ac_prog = install &&
-	    grep dspmsg "$as_dir/$ac_prog$ac_exec_ext" >/dev/null 2>&1; then
-	    # AIX install.  It has an incompatible calling convention.
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-	    # program-specific install script used by HP pwplus--don't use.
-	    :
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-	    ac_cv_path_install="$as_dir/$ac_prog$ac_exec_ext -c"
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-	  fi
-	fi
-      done
-    done
-    ;;
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-IFS=$as_save_IFS
-
-
-fi
-  if test "${ac_cv_path_install+set}" = set; then
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-    # As a last resort, use the slow shell script.  Don't cache a
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-    INSTALL=$ac_install_sh
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-{ echo "$as_me:$LINENO: result: $INSTALL" >&5
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-# Use test -z because SunOS4 sh mishandles braces in ${var-val}.
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-test -z "$INSTALL_PROGRAM" && INSTALL_PROGRAM='${INSTALL}'
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-
-test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644'
-
-{ echo "$as_me:$LINENO: checking whether build environment is sane" >&5
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-# Do `set' in a subshell so we don't clobber the current shell's
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-      # If neither matched, then we have a broken ls.  This can happen
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-      { { echo "$as_me:$LINENO: error: ls -t appears to fail.  Make sure there is not a broken
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-echo "$as_me: error: ls -t appears to fail.  Make sure there is not a broken
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-   { (exit 1); exit 1; }; }
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-
-   test "$2" = conftest.file
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-then
-   # Ok.
-   :
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-   { { echo "$as_me:$LINENO: error: newly created file is older than distributed files!
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-echo "$as_me: error: newly created file is older than distributed files!
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-   { (exit 1); exit 1; }; }
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-{ echo "$as_me:$LINENO: result: yes" >&5
-echo "${ECHO_T}yes" >&6; }
-test "$program_prefix" != NONE &&
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-# Use a double $ so make ignores it.
-test "$program_suffix" != NONE &&
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-# Double any \ or $.  echo might interpret backslashes.
-# By default was `s,x,x', remove it if useless.
-cat <<\_ACEOF >conftest.sed
-s/[\\$]/&&/g;s/;s,x,x,$//
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-program_transform_name=`echo $program_transform_name | sed -f conftest.sed`
-rm -f conftest.sed
-
-# expand $ac_aux_dir to an absolute path
-am_aux_dir=`cd $ac_aux_dir && pwd`
-
-test x"${MISSING+set}" = xset || MISSING="\${SHELL} $am_aux_dir/missing"
-# Use eval to expand $SHELL
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-  am_missing_run=
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-echo "$as_me: WARNING: \`missing' script is too old or missing" >&2;}
-fi
-
-if mkdir -p --version . >/dev/null 2>&1 && test ! -d ./--version; then
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-  #     make install will fail,
-  #  2. the above comment should most certainly read
-  #     $(mkdir_p) $(DESTDIR)$(somedir)
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-fi
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-for ac_prog in gawk mawk nawk awk
-do
-  # Extract the first word of "$ac_prog", so it can be a program name with args.
-set dummy $ac_prog; ac_word=$2
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-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
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-done
-done
-IFS=$as_save_IFS
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-fi
-fi
-AWK=$ac_cv_prog_AWK
-if test -n "$AWK"; then
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-echo "${ECHO_T}$AWK" >&6; }
-else
-  { echo "$as_me:$LINENO: result: no" >&5
-echo "${ECHO_T}no" >&6; }
-fi
-
-
-  test -n "$AWK" && break
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-{ echo "$as_me:$LINENO: checking whether ${MAKE-make} sets \$(MAKE)" >&5
-echo $ECHO_N "checking whether ${MAKE-make} sets \$(MAKE)... $ECHO_C" >&6; }
-set x ${MAKE-make}; ac_make=`echo "$2" | sed 's/+/p/g; s/[^a-zA-Z0-9_]/_/g'`
-if { as_var=ac_cv_prog_make_${ac_make}_set; eval "test \"\${$as_var+set}\" = set"; }; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  cat >conftest.make <<\_ACEOF
-SHELL = /bin/sh
-all:
-	@echo '@@@%%%=$(MAKE)=@@@%%%'
-_ACEOF
-# GNU make sometimes prints "make[1]: Entering...", which would confuse us.
-case `${MAKE-make} -f conftest.make 2>/dev/null` in
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-    eval ac_cv_prog_make_${ac_make}_set=yes;;
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-    eval ac_cv_prog_make_${ac_make}_set=no;;
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-rm -f conftest.make
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-{ echo "$as_me:$LINENO: checking whether ${MAKE-make} sets \$(MAKE)" >&5
-echo $ECHO_N "checking whether ${MAKE-make} sets \$(MAKE)... $ECHO_C" >&6; }
-set x ${MAKE-make}; ac_make=`echo "$2" | sed 's/+/p/g; s/[^a-zA-Z0-9_]/_/g'`
-if { as_var=ac_cv_prog_make_${ac_make}_set; eval "test \"\${$as_var+set}\" = set"; }; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  cat >conftest.make <<\_ACEOF
-SHELL = /bin/sh
-all:
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-# GNU make sometimes prints "make[1]: Entering...", which would confuse us.
-case `${MAKE-make} -f conftest.make 2>/dev/null` in
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-    eval ac_cv_prog_make_${ac_make}_set=no;;
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-rm -f conftest.make
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-if eval test \$ac_cv_prog_make_${ac_make}_set = yes; then
-  { echo "$as_me:$LINENO: result: yes" >&5
-echo "${ECHO_T}yes" >&6; }
-  SET_MAKE=
-else
-  { echo "$as_me:$LINENO: result: no" >&5
-echo "${ECHO_T}no" >&6; }
-  SET_MAKE="MAKE=${MAKE-make}"
-fi
-
-# Find a good install program.  We prefer a C program (faster),
-# so one script is as good as another.  But avoid the broken or
-# incompatible versions:
-# SysV /etc/install, /usr/sbin/install
-# SunOS /usr/etc/install
-# IRIX /sbin/install
-# AIX /bin/install
-# AmigaOS /C/install, which installs bootblocks on floppy discs
-# AIX 4 /usr/bin/installbsd, which doesn't work without a -g flag
-# AFS /usr/afsws/bin/install, which mishandles nonexistent args
-# SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff"
-# OS/2's system install, which has a completely different semantic
-# ./install, which can be erroneously created by make from ./install.sh.
-{ echo "$as_me:$LINENO: checking for a BSD-compatible install" >&5
-echo $ECHO_N "checking for a BSD-compatible install... $ECHO_C" >&6; }
-if test -z "$INSTALL"; then
-if test "${ac_cv_path_install+set}" = set; then
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-else
-  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
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-  # Account for people who put trailing slashes in PATH elements.
-case $as_dir/ in
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-  /etc/* | /usr/sbin/* | /usr/etc/* | /sbin/* | /usr/afsws/bin/* | \
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-  /usr/ucb/* ) ;;
-  *)
-    # OSF1 and SCO ODT 3.0 have their own names for install.
-    # Don't use installbsd from OSF since it installs stuff as root
-    # by default.
-    for ac_prog in ginstall scoinst install; do
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-	if { test -f "$as_dir/$ac_prog$ac_exec_ext" && $as_executable_p "$as_dir/$ac_prog$ac_exec_ext"; }; then
-	  if test $ac_prog = install &&
-	    grep dspmsg "$as_dir/$ac_prog$ac_exec_ext" >/dev/null 2>&1; then
-	    # AIX install.  It has an incompatible calling convention.
-	    :
-	  elif test $ac_prog = install &&
-	    grep pwplus "$as_dir/$ac_prog$ac_exec_ext" >/dev/null 2>&1; then
-	    # program-specific install script used by HP pwplus--don't use.
-	    :
-	  else
-	    ac_cv_path_install="$as_dir/$ac_prog$ac_exec_ext -c"
-	    break 3
-	  fi
-	fi
-      done
-    done
-    ;;
-esac
-done
-IFS=$as_save_IFS
-
-
-fi
-  if test "${ac_cv_path_install+set}" = set; then
-    INSTALL=$ac_cv_path_install
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-    # As a last resort, use the slow shell script.  Don't cache a
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-    INSTALL=$ac_install_sh
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-fi
-{ echo "$as_me:$LINENO: result: $INSTALL" >&5
-echo "${ECHO_T}$INSTALL" >&6; }
-
-# Use test -z because SunOS4 sh mishandles braces in ${var-val}.
-# It thinks the first close brace ends the variable substitution.
-test -z "$INSTALL_PROGRAM" && INSTALL_PROGRAM='${INSTALL}'
-
-test -z "$INSTALL_SCRIPT" && INSTALL_SCRIPT='${INSTALL}'
-
-test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644'
-
-
-# Check whether --enable-epix-el was given.
-if test "${enable_epix_el+set}" = set; then
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-  enable_epix_el=yes
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-
-
-
-if test "$enable_epix_el" = yes; then
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-else
-  ENABLE_EPIX_EL_TRUE='#'
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-
-
-# Extract the first word of "bash", so it can be a program name with args.
-set dummy bash; ac_word=$2
-{ echo "$as_me:$LINENO: checking for $ac_word" >&5
-echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6; }
-if test "${ac_cv_path_BASH_PATH+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  case $BASH_PATH in
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-  ac_cv_path_BASH_PATH="$BASH_PATH" # Let the user override the test with a path.
-  ;;
-  *)
-  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
-  IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
-  for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; }; then
-    ac_cv_path_BASH_PATH="$as_dir/$ac_word$ac_exec_ext"
-    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
-    break 2
-  fi
-done
-done
-IFS=$as_save_IFS
-
-  test -z "$ac_cv_path_BASH_PATH" && ac_cv_path_BASH_PATH="/bin/bash"
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-esac
-fi
-BASH_PATH=$ac_cv_path_BASH_PATH
-if test -n "$BASH_PATH"; then
-  { echo "$as_me:$LINENO: result: $BASH_PATH" >&5
-echo "${ECHO_T}$BASH_PATH" >&6; }
-else
-  { echo "$as_me:$LINENO: result: no" >&5
-echo "${ECHO_T}no" >&6; }
-fi
-
-
-
-# Check whether --with-bash was given.
-if test "${with_bash+set}" = set; then
-  withval=$with_bash; BASH_PATH=$withval
-fi
-
-
-# Extract the first word of "g++", so it can be a program name with args.
-set dummy g++; ac_word=$2
-{ echo "$as_me:$LINENO: checking for $ac_word" >&5
-echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6; }
-if test "${ac_cv_path_RUNTIME_COMPILER+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  case $RUNTIME_COMPILER in
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-  ac_cv_path_RUNTIME_COMPILER="$RUNTIME_COMPILER" # Let the user override the test with a path.
-  ;;
-  *)
-  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
-  IFS=$as_save_IFS
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-  for ac_exec_ext in '' $ac_executable_extensions; do
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-    break 2
-  fi
-done
-done
-IFS=$as_save_IFS
-
-  test -z "$ac_cv_path_RUNTIME_COMPILER" && ac_cv_path_RUNTIME_COMPILER="g++"
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-esac
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-RUNTIME_COMPILER=$ac_cv_path_RUNTIME_COMPILER
-if test -n "$RUNTIME_COMPILER"; then
-  { echo "$as_me:$LINENO: result: $RUNTIME_COMPILER" >&5
-echo "${ECHO_T}$RUNTIME_COMPILER" >&6; }
-else
-  { echo "$as_me:$LINENO: result: no" >&5
-echo "${ECHO_T}no" >&6; }
-fi
-
-
-
-# Check whether --with-runtime was given.
-if test "${with_runtime+set}" = set; then
-  withval=$with_runtime; RUNTIME_COMPILER=$withval
-fi
-
-
-
-
-ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
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-  # Extract the first word of "${ac_tool_prefix}gcc", so it can be a program name with args.
-set dummy ${ac_tool_prefix}gcc; ac_word=$2
-{ echo "$as_me:$LINENO: checking for $ac_word" >&5
-echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6; }
-if test "${ac_cv_prog_CC+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test -n "$CC"; then
-  ac_cv_prog_CC="$CC" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
-  IFS=$as_save_IFS
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-    ac_cv_prog_CC="${ac_tool_prefix}gcc"
-    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
-    break 2
-  fi
-done
-done
-IFS=$as_save_IFS
-
-fi
-fi
-CC=$ac_cv_prog_CC
-if test -n "$CC"; then
-  { echo "$as_me:$LINENO: result: $CC" >&5
-echo "${ECHO_T}$CC" >&6; }
-else
-  { echo "$as_me:$LINENO: result: no" >&5
-echo "${ECHO_T}no" >&6; }
-fi
-
-
-fi
-if test -z "$ac_cv_prog_CC"; then
-  ac_ct_CC=$CC
-  # Extract the first word of "gcc", so it can be a program name with args.
-set dummy gcc; ac_word=$2
-{ echo "$as_me:$LINENO: checking for $ac_word" >&5
-echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6; }
-if test "${ac_cv_prog_ac_ct_CC+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test -n "$ac_ct_CC"; then
-  ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
-  IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
-  for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; }; then
-    ac_cv_prog_ac_ct_CC="gcc"
-    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
-    break 2
-  fi
-done
-done
-IFS=$as_save_IFS
-
-fi
-fi
-ac_ct_CC=$ac_cv_prog_ac_ct_CC
-if test -n "$ac_ct_CC"; then
-  { echo "$as_me:$LINENO: result: $ac_ct_CC" >&5
-echo "${ECHO_T}$ac_ct_CC" >&6; }
-else
-  { echo "$as_me:$LINENO: result: no" >&5
-echo "${ECHO_T}no" >&6; }
-fi
-
-  if test "x$ac_ct_CC" = x; then
-    CC=""
-  else
-    case $cross_compiling:$ac_tool_warned in
-yes:)
-{ echo "$as_me:$LINENO: WARNING: In the future, Autoconf will not detect cross-tools
-whose name does not start with the host triplet.  If you think this
-configuration is useful to you, please write to autoconf@gnu.org." >&5
-echo "$as_me: WARNING: In the future, Autoconf will not detect cross-tools
-whose name does not start with the host triplet.  If you think this
-configuration is useful to you, please write to autoconf@gnu.org." >&2;}
-ac_tool_warned=yes ;;
-esac
-    CC=$ac_ct_CC
-  fi
-else
-  CC="$ac_cv_prog_CC"
-fi
-
-if test -z "$CC"; then
-          if test -n "$ac_tool_prefix"; then
-    # Extract the first word of "${ac_tool_prefix}cc", so it can be a program name with args.
-set dummy ${ac_tool_prefix}cc; ac_word=$2
-{ echo "$as_me:$LINENO: checking for $ac_word" >&5
-echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6; }
-if test "${ac_cv_prog_CC+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test -n "$CC"; then
-  ac_cv_prog_CC="$CC" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
-  IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
-  for ac_exec_ext in '' $ac_executable_extensions; do
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-    ac_cv_prog_CC="${ac_tool_prefix}cc"
-    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
-    break 2
-  fi
-done
-done
-IFS=$as_save_IFS
-
-fi
-fi
-CC=$ac_cv_prog_CC
-if test -n "$CC"; then
-  { echo "$as_me:$LINENO: result: $CC" >&5
-echo "${ECHO_T}$CC" >&6; }
-else
-  { echo "$as_me:$LINENO: result: no" >&5
-echo "${ECHO_T}no" >&6; }
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-
-
-  fi
-fi
-if test -z "$CC"; then
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-set dummy cc; ac_word=$2
-{ echo "$as_me:$LINENO: checking for $ac_word" >&5
-echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6; }
-if test "${ac_cv_prog_CC+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test -n "$CC"; then
-  ac_cv_prog_CC="$CC" # Let the user override the test.
-else
-  ac_prog_rejected=no
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
-  IFS=$as_save_IFS
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-  for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; }; then
-    if test "$as_dir/$ac_word$ac_exec_ext" = "/usr/ucb/cc"; then
-       ac_prog_rejected=yes
-       continue
-     fi
-    ac_cv_prog_CC="cc"
-    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
-    break 2
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-done
-done
-IFS=$as_save_IFS
-
-if test $ac_prog_rejected = yes; then
-  # We found a bogon in the path, so make sure we never use it.
-  set dummy $ac_cv_prog_CC
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-  if test $# != 0; then
-    # We chose a different compiler from the bogus one.
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-fi
-fi
-fi
-CC=$ac_cv_prog_CC
-if test -n "$CC"; then
-  { echo "$as_me:$LINENO: result: $CC" >&5
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-else
-  { echo "$as_me:$LINENO: result: no" >&5
-echo "${ECHO_T}no" >&6; }
-fi
-
-
-fi
-if test -z "$CC"; then
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-{ echo "$as_me:$LINENO: checking for $ac_word" >&5
-echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6; }
-if test "${ac_cv_prog_CC+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test -n "$CC"; then
-  ac_cv_prog_CC="$CC" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
-  IFS=$as_save_IFS
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-done
-done
-IFS=$as_save_IFS
-
-fi
-fi
-CC=$ac_cv_prog_CC
-if test -n "$CC"; then
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-echo "${ECHO_T}$CC" >&6; }
-else
-  { echo "$as_me:$LINENO: result: no" >&5
-echo "${ECHO_T}no" >&6; }
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-
-
-    test -n "$CC" && break
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-if test -z "$CC"; then
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-do
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-set dummy $ac_prog; ac_word=$2
-{ echo "$as_me:$LINENO: checking for $ac_word" >&5
-echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6; }
-if test "${ac_cv_prog_ac_ct_CC+set}" = set; then
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-else
-  if test -n "$ac_ct_CC"; then
-  ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
-  IFS=$as_save_IFS
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-  for ac_exec_ext in '' $ac_executable_extensions; do
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-done
-done
-IFS=$as_save_IFS
-
-fi
-fi
-ac_ct_CC=$ac_cv_prog_ac_ct_CC
-if test -n "$ac_ct_CC"; then
-  { echo "$as_me:$LINENO: result: $ac_ct_CC" >&5
-echo "${ECHO_T}$ac_ct_CC" >&6; }
-else
-  { echo "$as_me:$LINENO: result: no" >&5
-echo "${ECHO_T}no" >&6; }
-fi
-
-
-  test -n "$ac_ct_CC" && break
-done
-
-  if test "x$ac_ct_CC" = x; then
-    CC=""
-  else
-    case $cross_compiling:$ac_tool_warned in
-yes:)
-{ echo "$as_me:$LINENO: WARNING: In the future, Autoconf will not detect cross-tools
-whose name does not start with the host triplet.  If you think this
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-echo "$as_me: WARNING: In the future, Autoconf will not detect cross-tools
-whose name does not start with the host triplet.  If you think this
-configuration is useful to you, please write to autoconf@gnu.org." >&2;}
-ac_tool_warned=yes ;;
-esac
-    CC=$ac_ct_CC
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-fi
-
-fi
-
-
-test -z "$CC" && { { echo "$as_me:$LINENO: error: no acceptable C compiler found in \$PATH
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-echo "$as_me: error: no acceptable C compiler found in \$PATH
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-
-# Provide some information about the compiler.
-echo "$as_me:$LINENO: checking for C compiler version" >&5
-ac_compiler=`set X $ac_compile; echo $2`
-{ (ac_try="$ac_compiler --version >&5"
-case "(($ac_try" in
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-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
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-{ (ac_try="$ac_compiler -v >&5"
-case "(($ac_try" in
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-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_compiler -v >&5") 2>&5
-  ac_status=$?
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-{ (ac_try="$ac_compiler -V >&5"
-case "(($ac_try" in
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-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
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-
-{ echo "$as_me:$LINENO: checking whether we are using the GNU C compiler" >&5
-echo $ECHO_N "checking whether we are using the GNU C compiler... $ECHO_C" >&6; }
-if test "${ac_cv_c_compiler_gnu+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-
-int
-main ()
-{
-#ifndef __GNUC__
-       choke me
-#endif
-
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext
-if { (ac_try="$ac_compile"
-case "(($ac_try" in
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-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_compile") 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
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-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag" || test ! -s conftest.err'
-  { (case "(($ac_try" in
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-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_try") 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest.$ac_objext'
-  { (case "(($ac_try" in
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-  *) ac_try_echo=$ac_try;;
-esac
-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_try") 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  ac_compiler_gnu=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-	ac_compiler_gnu=no
-fi
-
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-ac_cv_c_compiler_gnu=$ac_compiler_gnu
-
-fi
-{ echo "$as_me:$LINENO: result: $ac_cv_c_compiler_gnu" >&5
-echo "${ECHO_T}$ac_cv_c_compiler_gnu" >&6; }
-GCC=`test $ac_compiler_gnu = yes && echo yes`
-ac_test_CFLAGS=${CFLAGS+set}
-ac_save_CFLAGS=$CFLAGS
-{ echo "$as_me:$LINENO: checking whether $CC accepts -g" >&5
-echo $ECHO_N "checking whether $CC accepts -g... $ECHO_C" >&6; }
-if test "${ac_cv_prog_cc_g+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  ac_save_c_werror_flag=$ac_c_werror_flag
-   ac_c_werror_flag=yes
-   ac_cv_prog_cc_g=no
-   CFLAGS="-g"
-   cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-
-int
-main ()
-{
-
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext
-if { (ac_try="$ac_compile"
-case "(($ac_try" in
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-  *) ac_try_echo=$ac_try;;
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-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_compile") 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag" || test ! -s conftest.err'
-  { (case "(($ac_try" in
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-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_try") 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest.$ac_objext'
-  { (case "(($ac_try" in
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-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_try") 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
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-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-	CFLAGS=""
-      cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-
-int
-main ()
-{
-
-  ;
-  return 0;
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-_ACEOF
-rm -f conftest.$ac_objext
-if { (ac_try="$ac_compile"
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-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_compile") 2>conftest.er1
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-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag" || test ! -s conftest.err'
-  { (case "(($ac_try" in
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-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_try") 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest.$ac_objext'
-  { (case "(($ac_try" in
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-  *) ac_try_echo=$ac_try;;
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-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_try") 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  :
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-	ac_c_werror_flag=$ac_save_c_werror_flag
-	 CFLAGS="-g"
-	 cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-
-int
-main ()
-{
-
-  ;
-  return 0;
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-_ACEOF
-rm -f conftest.$ac_objext
-if { (ac_try="$ac_compile"
-case "(($ac_try" in
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-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_compile") 2>conftest.er1
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-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag" || test ! -s conftest.err'
-  { (case "(($ac_try" in
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-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_try") 2>&5
-  ac_status=$?
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-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest.$ac_objext'
-  { (case "(($ac_try" in
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-  *) ac_try_echo=$ac_try;;
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-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_try") 2>&5
-  ac_status=$?
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-  (exit $ac_status); }; }; then
-  ac_cv_prog_cc_g=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-
-fi
-
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-fi
-
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-fi
-
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-   ac_c_werror_flag=$ac_save_c_werror_flag
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-{ echo "$as_me:$LINENO: result: $ac_cv_prog_cc_g" >&5
-echo "${ECHO_T}$ac_cv_prog_cc_g" >&6; }
-if test "$ac_test_CFLAGS" = set; then
-  CFLAGS=$ac_save_CFLAGS
-elif test $ac_cv_prog_cc_g = yes; then
-  if test "$GCC" = yes; then
-    CFLAGS="-g -O2"
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-    CFLAGS="-g"
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-else
-  if test "$GCC" = yes; then
-    CFLAGS="-O2"
-  else
-    CFLAGS=
-  fi
-fi
-{ echo "$as_me:$LINENO: checking for $CC option to accept ISO C89" >&5
-echo $ECHO_N "checking for $CC option to accept ISO C89... $ECHO_C" >&6; }
-if test "${ac_cv_prog_cc_c89+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  ac_cv_prog_cc_c89=no
-ac_save_CC=$CC
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <stdarg.h>
-#include <stdio.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-/* Most of the following tests are stolen from RCS 5.7's src/conf.sh.  */
-struct buf { int x; };
-FILE * (*rcsopen) (struct buf *, struct stat *, int);
-static char *e (p, i)
-     char **p;
-     int i;
-{
-  return p[i];
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-static char *f (char * (*g) (char **, int), char **p, ...)
-{
-  char *s;
-  va_list v;
-  va_start (v,p);
-  s = g (p, va_arg (v,int));
-  va_end (v);
-  return s;
-}
-
-/* OSF 4.0 Compaq cc is some sort of almost-ANSI by default.  It has
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-int osf4_cc_array ['\x00' == 0 ? 1 : -1];
-
-/* IBM C 6 for AIX is almost-ANSI by default, but it replaces macro parameters
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-int xlc6_cc_array[FOO(a) == 'x' ? 1 : -1];
-
-int test (int i, double x);
-struct s1 {int (*f) (int a);};
-struct s2 {int (*f) (double a);};
-int pairnames (int, char **, FILE *(*)(struct buf *, struct stat *, int), int, int);
-int argc;
-char **argv;
-int
-main ()
-{
-return f (e, argv, 0) != argv[0]  ||  f (e, argv, 1) != argv[1];
-  ;
-  return 0;
-}
-_ACEOF
-for ac_arg in '' -qlanglvl=extc89 -qlanglvl=ansi -std \
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-  rm -f conftest.$ac_objext
-if { (ac_try="$ac_compile"
-case "(($ac_try" in
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-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
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-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag" || test ! -s conftest.err'
-  { (case "(($ac_try" in
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-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_try") 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest.$ac_objext'
-  { (case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
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-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_try") 2>&5
-  ac_status=$?
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-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-
-fi
-
-rm -f core conftest.err conftest.$ac_objext
-  test "x$ac_cv_prog_cc_c89" != "xno" && break
-done
-rm -f conftest.$ac_ext
-CC=$ac_save_CC
-
-fi
-# AC_CACHE_VAL
-case "x$ac_cv_prog_cc_c89" in
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-    { echo "$as_me:$LINENO: result: none needed" >&5
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-  xno)
-    { echo "$as_me:$LINENO: result: unsupported" >&5
-echo "${ECHO_T}unsupported" >&6; } ;;
-  *)
-    CC="$CC $ac_cv_prog_cc_c89"
-    { echo "$as_me:$LINENO: result: $ac_cv_prog_cc_c89" >&5
-echo "${ECHO_T}$ac_cv_prog_cc_c89" >&6; } ;;
-esac
-
-
-ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-depcc="$CC"   am_compiler_list=
-
-{ echo "$as_me:$LINENO: checking dependency style of $depcc" >&5
-echo $ECHO_N "checking dependency style of $depcc... $ECHO_C" >&6; }
-if test "${am_cv_CC_dependencies_compiler_type+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
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-  if test -z "$AMDEP_TRUE" && test -f "$am_depcomp"; then
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-  # Copy depcomp to subdir because otherwise we won't find it if we're
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-
-  am_cv_CC_dependencies_compiler_type=none
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-
-    case $depmode in
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-      # after this tag, mechanisms are not by side-effect, so they'll
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-    if depmode=$depmode \
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-      # that says an option was ignored or not supported.
-      # When given -MP, icc 7.0 and 7.1 complain thusly:
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-      # The diagnosis changed in icc 8.0:
-      #   icc: Command line remark: option '-MP' not supported
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-          grep 'not supported' conftest.err) >/dev/null 2>&1; then :; else
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-        break
-      fi
-    fi
-  done
-
-  cd ..
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-  am_cv_CC_dependencies_compiler_type=none
-fi
-
-fi
-{ echo "$as_me:$LINENO: result: $am_cv_CC_dependencies_compiler_type" >&5
-echo "${ECHO_T}$am_cv_CC_dependencies_compiler_type" >&6; }
-CCDEPMODE=depmode=$am_cv_CC_dependencies_compiler_type
-
-
-
-if
-  test "x$enable_dependency_tracking" != xno \
-  && test "$am_cv_CC_dependencies_compiler_type" = gcc3; then
-  am__fastdepCC_TRUE=
-  am__fastdepCC_FALSE='#'
-else
-  am__fastdepCC_TRUE='#'
-  am__fastdepCC_FALSE=
-fi
-
-
-
-ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-{ echo "$as_me:$LINENO: checking how to run the C preprocessor" >&5
-echo $ECHO_N "checking how to run the C preprocessor... $ECHO_C" >&6; }
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-  # On the NeXT, cc -E runs the code through the compiler's parser,
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-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-		     Syntax error
-_ACEOF
-if { (ac_try="$ac_cpp conftest.$ac_ext"
-case "(($ac_try" in
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-esac
-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_cpp conftest.$ac_ext") 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } >/dev/null; then
-  if test -s conftest.err; then
-    ac_cpp_err=$ac_c_preproc_warn_flag
-    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
-  else
-    ac_cpp_err=
-  fi
-else
-  ac_cpp_err=yes
-fi
-if test -z "$ac_cpp_err"; then
-  :
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-  # Broken: fails on valid input.
-continue
-fi
-
-rm -f conftest.err conftest.$ac_ext
-
-  # OK, works on sane cases.  Now check whether nonexistent headers
-  # can be detected and how.
-  cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <ac_nonexistent.h>
-_ACEOF
-if { (ac_try="$ac_cpp conftest.$ac_ext"
-case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_cpp conftest.$ac_ext") 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } >/dev/null; then
-  if test -s conftest.err; then
-    ac_cpp_err=$ac_c_preproc_warn_flag
-    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
-  else
-    ac_cpp_err=
-  fi
-else
-  ac_cpp_err=yes
-fi
-if test -z "$ac_cpp_err"; then
-  # Broken: success on invalid input.
-continue
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-  # Passes both tests.
-ac_preproc_ok=:
-break
-fi
-
-rm -f conftest.err conftest.$ac_ext
-
-done
-# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped.
-rm -f conftest.err conftest.$ac_ext
-if $ac_preproc_ok; then
-  break
-fi
-
-    done
-    ac_cv_prog_CPP=$CPP
-
-fi
-  CPP=$ac_cv_prog_CPP
-else
-  ac_cv_prog_CPP=$CPP
-fi
-{ echo "$as_me:$LINENO: result: $CPP" >&5
-echo "${ECHO_T}$CPP" >&6; }
-ac_preproc_ok=false
-for ac_c_preproc_warn_flag in '' yes
-do
-  # Use a header file that comes with gcc, so configuring glibc
-  # with a fresh cross-compiler works.
-  # Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-  # <limits.h> exists even on freestanding compilers.
-  # On the NeXT, cc -E runs the code through the compiler's parser,
-  # not just through cpp. "Syntax error" is here to catch this case.
-  cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-		     Syntax error
-_ACEOF
-if { (ac_try="$ac_cpp conftest.$ac_ext"
-case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_cpp conftest.$ac_ext") 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } >/dev/null; then
-  if test -s conftest.err; then
-    ac_cpp_err=$ac_c_preproc_warn_flag
-    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
-  else
-    ac_cpp_err=
-  fi
-else
-  ac_cpp_err=yes
-fi
-if test -z "$ac_cpp_err"; then
-  :
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-  # Broken: fails on valid input.
-continue
-fi
-
-rm -f conftest.err conftest.$ac_ext
-
-  # OK, works on sane cases.  Now check whether nonexistent headers
-  # can be detected and how.
-  cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <ac_nonexistent.h>
-_ACEOF
-if { (ac_try="$ac_cpp conftest.$ac_ext"
-case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_cpp conftest.$ac_ext") 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } >/dev/null; then
-  if test -s conftest.err; then
-    ac_cpp_err=$ac_c_preproc_warn_flag
-    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
-  else
-    ac_cpp_err=
-  fi
-else
-  ac_cpp_err=yes
-fi
-if test -z "$ac_cpp_err"; then
-  # Broken: success on invalid input.
-continue
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-  # Passes both tests.
-ac_preproc_ok=:
-break
-fi
-
-rm -f conftest.err conftest.$ac_ext
-
-done
-# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped.
-rm -f conftest.err conftest.$ac_ext
-if $ac_preproc_ok; then
-  :
-else
-  { { echo "$as_me:$LINENO: error: C preprocessor \"$CPP\" fails sanity check
-See \`config.log' for more details." >&5
-echo "$as_me: error: C preprocessor \"$CPP\" fails sanity check
-See \`config.log' for more details." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-
-ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-
-{ echo "$as_me:$LINENO: checking for grep that handles long lines and -e" >&5
-echo $ECHO_N "checking for grep that handles long lines and -e... $ECHO_C" >&6; }
-if test "${ac_cv_path_GREP+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  # Extract the first word of "grep ggrep" to use in msg output
-if test -z "$GREP"; then
-set dummy grep ggrep; ac_prog_name=$2
-if test "${ac_cv_path_GREP+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  ac_path_GREP_found=false
-# Loop through the user's path and test for each of PROGNAME-LIST
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin
-do
-  IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
-  for ac_prog in grep ggrep; do
-  for ac_exec_ext in '' $ac_executable_extensions; do
-    ac_path_GREP="$as_dir/$ac_prog$ac_exec_ext"
-    { test -f "$ac_path_GREP" && $as_executable_p "$ac_path_GREP"; } || continue
-    # Check for GNU ac_path_GREP and select it if it is found.
-  # Check for GNU $ac_path_GREP
-case `"$ac_path_GREP" --version 2>&1` in
-*GNU*)
-  ac_cv_path_GREP="$ac_path_GREP" ac_path_GREP_found=:;;
-*)
-  ac_count=0
-  echo $ECHO_N "0123456789$ECHO_C" >"conftest.in"
-  while :
-  do
-    cat "conftest.in" "conftest.in" >"conftest.tmp"
-    mv "conftest.tmp" "conftest.in"
-    cp "conftest.in" "conftest.nl"
-    echo 'GREP' >> "conftest.nl"
-    "$ac_path_GREP" -e 'GREP$' -e '-(cannot match)-' < "conftest.nl" >"conftest.out" 2>/dev/null || break
-    diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
-    ac_count=`expr $ac_count + 1`
-    if test $ac_count -gt ${ac_path_GREP_max-0}; then
-      # Best one so far, save it but keep looking for a better one
-      ac_cv_path_GREP="$ac_path_GREP"
-      ac_path_GREP_max=$ac_count
-    fi
-    # 10*(2^10) chars as input seems more than enough
-    test $ac_count -gt 10 && break
-  done
-  rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
-esac
-
-
-    $ac_path_GREP_found && break 3
-  done
-done
-
-done
-IFS=$as_save_IFS
-
-
-fi
-
-GREP="$ac_cv_path_GREP"
-if test -z "$GREP"; then
-  { { echo "$as_me:$LINENO: error: no acceptable $ac_prog_name could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" >&5
-echo "$as_me: error: no acceptable $ac_prog_name could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" >&2;}
-   { (exit 1); exit 1; }; }
-fi
-
-else
-  ac_cv_path_GREP=$GREP
-fi
-
-
-fi
-{ echo "$as_me:$LINENO: result: $ac_cv_path_GREP" >&5
-echo "${ECHO_T}$ac_cv_path_GREP" >&6; }
- GREP="$ac_cv_path_GREP"
-
-
-{ echo "$as_me:$LINENO: checking for egrep" >&5
-echo $ECHO_N "checking for egrep... $ECHO_C" >&6; }
-if test "${ac_cv_path_EGREP+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if echo a | $GREP -E '(a|b)' >/dev/null 2>&1
-   then ac_cv_path_EGREP="$GREP -E"
-   else
-     # Extract the first word of "egrep" to use in msg output
-if test -z "$EGREP"; then
-set dummy egrep; ac_prog_name=$2
-if test "${ac_cv_path_EGREP+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  ac_path_EGREP_found=false
-# Loop through the user's path and test for each of PROGNAME-LIST
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin
-do
-  IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
-  for ac_prog in egrep; do
-  for ac_exec_ext in '' $ac_executable_extensions; do
-    ac_path_EGREP="$as_dir/$ac_prog$ac_exec_ext"
-    { test -f "$ac_path_EGREP" && $as_executable_p "$ac_path_EGREP"; } || continue
-    # Check for GNU ac_path_EGREP and select it if it is found.
-  # Check for GNU $ac_path_EGREP
-case `"$ac_path_EGREP" --version 2>&1` in
-*GNU*)
-  ac_cv_path_EGREP="$ac_path_EGREP" ac_path_EGREP_found=:;;
-*)
-  ac_count=0
-  echo $ECHO_N "0123456789$ECHO_C" >"conftest.in"
-  while :
-  do
-    cat "conftest.in" "conftest.in" >"conftest.tmp"
-    mv "conftest.tmp" "conftest.in"
-    cp "conftest.in" "conftest.nl"
-    echo 'EGREP' >> "conftest.nl"
-    "$ac_path_EGREP" 'EGREP$' < "conftest.nl" >"conftest.out" 2>/dev/null || break
-    diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
-    ac_count=`expr $ac_count + 1`
-    if test $ac_count -gt ${ac_path_EGREP_max-0}; then
-      # Best one so far, save it but keep looking for a better one
-      ac_cv_path_EGREP="$ac_path_EGREP"
-      ac_path_EGREP_max=$ac_count
-    fi
-    # 10*(2^10) chars as input seems more than enough
-    test $ac_count -gt 10 && break
-  done
-  rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
-esac
-
-
-    $ac_path_EGREP_found && break 3
-  done
-done
-
-done
-IFS=$as_save_IFS
-
-
-fi
-
-EGREP="$ac_cv_path_EGREP"
-if test -z "$EGREP"; then
-  { { echo "$as_me:$LINENO: error: no acceptable $ac_prog_name could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" >&5
-echo "$as_me: error: no acceptable $ac_prog_name could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" >&2;}
-   { (exit 1); exit 1; }; }
-fi
-
-else
-  ac_cv_path_EGREP=$EGREP
-fi
-
-
-   fi
-fi
-{ echo "$as_me:$LINENO: result: $ac_cv_path_EGREP" >&5
-echo "${ECHO_T}$ac_cv_path_EGREP" >&6; }
- EGREP="$ac_cv_path_EGREP"
-
-
-{ echo "$as_me:$LINENO: checking for ANSI C header files" >&5
-echo $ECHO_N "checking for ANSI C header files... $ECHO_C" >&6; }
-if test "${ac_cv_header_stdc+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <stdlib.h>
-#include <stdarg.h>
-#include <string.h>
-#include <float.h>
-
-int
-main ()
-{
-
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext
-if { (ac_try="$ac_compile"
-case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_compile") 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag" || test ! -s conftest.err'
-  { (case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_try") 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest.$ac_objext'
-  { (case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_try") 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  ac_cv_header_stdc=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-	ac_cv_header_stdc=no
-fi
-
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-
-if test $ac_cv_header_stdc = yes; then
-  # SunOS 4.x string.h does not declare mem*, contrary to ANSI.
-  cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <string.h>
-
-_ACEOF
-if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
-  $EGREP "memchr" >/dev/null 2>&1; then
-  :
-else
-  ac_cv_header_stdc=no
-fi
-rm -f conftest*
-
-fi
-
-if test $ac_cv_header_stdc = yes; then
-  # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI.
-  cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <stdlib.h>
-
-_ACEOF
-if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
-  $EGREP "free" >/dev/null 2>&1; then
-  :
-else
-  ac_cv_header_stdc=no
-fi
-rm -f conftest*
-
-fi
-
-if test $ac_cv_header_stdc = yes; then
-  # /bin/cc in Irix-4.0.5 gets non-ANSI ctype macros unless using -ansi.
-  if test "$cross_compiling" = yes; then
-  :
-else
-  cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <ctype.h>
-#include <stdlib.h>
-#if ((' ' & 0x0FF) == 0x020)
-# define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
-# define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c))
-#else
-# define ISLOWER(c) \
-		   (('a' <= (c) && (c) <= 'i') \
-		     || ('j' <= (c) && (c) <= 'r') \
-		     || ('s' <= (c) && (c) <= 'z'))
-# define TOUPPER(c) (ISLOWER(c) ? ((c) | 0x40) : (c))
-#endif
-
-#define XOR(e, f) (((e) && !(f)) || (!(e) && (f)))
-int
-main ()
-{
-  int i;
-  for (i = 0; i < 256; i++)
-    if (XOR (islower (i), ISLOWER (i))
-	|| toupper (i) != TOUPPER (i))
-      return 2;
-  return 0;
-}
-_ACEOF
-rm -f conftest$ac_exeext
-if { (ac_try="$ac_link"
-case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_link") 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
-  { (case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_try") 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  :
-else
-  echo "$as_me: program exited with status $ac_status" >&5
-echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-( exit $ac_status )
-ac_cv_header_stdc=no
-fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
-fi
-
-
-fi
-fi
-{ echo "$as_me:$LINENO: result: $ac_cv_header_stdc" >&5
-echo "${ECHO_T}$ac_cv_header_stdc" >&6; }
-if test $ac_cv_header_stdc = yes; then
-
-cat >>confdefs.h <<\_ACEOF
-#define STDC_HEADERS 1
-_ACEOF
-
-fi
-
-
-{ echo "$as_me:$LINENO: checking for an ANSI C-conforming const" >&5
-echo $ECHO_N "checking for an ANSI C-conforming const... $ECHO_C" >&6; }
-if test "${ac_cv_c_const+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-
-int
-main ()
-{
-/* FIXME: Include the comments suggested by Paul. */
-#ifndef __cplusplus
-  /* Ultrix mips cc rejects this.  */
-  typedef int charset[2];
-  const charset x;
-  /* SunOS 4.1.1 cc rejects this.  */
-  char const *const *ccp;
-  char **p;
-  /* NEC SVR4.0.2 mips cc rejects this.  */
-  struct point {int x, y;};
-  static struct point const zero = {0,0};
-  /* AIX XL C 1.02.0.0 rejects this.
-     It does not let you subtract one const X* pointer from another in
-     an arm of an if-expression whose if-part is not a constant
-     expression */
-  const char *g = "string";
-  ccp = &g + (g ? g-g : 0);
-  /* HPUX 7.0 cc rejects these. */
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-	  }
-	  /^X\(\/\/\)$/{
-	    s//\1/
-	    q
-	  }
-	  /^X\(\/\).*/{
-	    s//\1/
-	    q
-	  }
-	  s/.*/./; q'`
-      test -d "$as_dir" && break
-    done
-    test -z "$as_dirs" || eval "mkdir $as_dirs"
-  } || test -d "$as_dir" || { { echo "$as_me:$LINENO: error: cannot create directory $as_dir" >&5
-echo "$as_me: error: cannot create directory $as_dir" >&2;}
-   { (exit 1); exit 1; }; }; }
-  ac_builddir=.
-
-case "$ac_dir" in
-.) ac_dir_suffix= ac_top_builddir_sub=. ac_top_build_prefix= ;;
-*)
-  ac_dir_suffix=/`echo "$ac_dir" | sed 's,^\.[\\/],,'`
-  # A ".." for each directory in $ac_dir_suffix.
-  ac_top_builddir_sub=`echo "$ac_dir_suffix" | sed 's,/[^\\/]*,/..,g;s,/,,'`
-  case $ac_top_builddir_sub in
-  "") ac_top_builddir_sub=. ac_top_build_prefix= ;;
-  *)  ac_top_build_prefix=$ac_top_builddir_sub/ ;;
-  esac ;;
-esac
-ac_abs_top_builddir=$ac_pwd
-ac_abs_builddir=$ac_pwd$ac_dir_suffix
-# for backward compatibility:
-ac_top_builddir=$ac_top_build_prefix
-
-case $srcdir in
-  .)  # We are building in place.
-    ac_srcdir=.
-    ac_top_srcdir=$ac_top_builddir_sub
-    ac_abs_top_srcdir=$ac_pwd ;;
-  [\\/]* | ?:[\\/]* )  # Absolute name.
-    ac_srcdir=$srcdir$ac_dir_suffix;
-    ac_top_srcdir=$srcdir
-    ac_abs_top_srcdir=$srcdir ;;
-  *) # Relative name.
-    ac_srcdir=$ac_top_build_prefix$srcdir$ac_dir_suffix
-    ac_top_srcdir=$ac_top_build_prefix$srcdir
-    ac_abs_top_srcdir=$ac_pwd/$srcdir ;;
-esac
-ac_abs_srcdir=$ac_abs_top_srcdir$ac_dir_suffix
-
-
-  case $ac_mode in
-  :F)
-  #
-  # CONFIG_FILE
-  #
-
-  case $INSTALL in
-  [\\/$]* | ?:[\\/]* ) ac_INSTALL=$INSTALL ;;
-  *) ac_INSTALL=$ac_top_build_prefix$INSTALL ;;
-  esac
-_ACEOF
-
-cat >>$CONFIG_STATUS <<\_ACEOF
-# If the template does not know about datarootdir, expand it.
-# FIXME: This hack should be removed a few years after 2.60.
-ac_datarootdir_hack=; ac_datarootdir_seen=
-
-case `sed -n '/datarootdir/ {
-  p
-  q
-}
-/@datadir@/p
-/@docdir@/p
-/@infodir@/p
-/@localedir@/p
-/@mandir@/p
-' $ac_file_inputs` in
-*datarootdir*) ac_datarootdir_seen=yes;;
-*@datadir@*|*@docdir@*|*@infodir@*|*@localedir@*|*@mandir@*)
-  { echo "$as_me:$LINENO: WARNING: $ac_file_inputs seems to ignore the --datarootdir setting" >&5
-echo "$as_me: WARNING: $ac_file_inputs seems to ignore the --datarootdir setting" >&2;}
-_ACEOF
-cat >>$CONFIG_STATUS <<_ACEOF
-  ac_datarootdir_hack='
-  s&@datadir@&$datadir&g
-  s&@docdir@&$docdir&g
-  s&@infodir@&$infodir&g
-  s&@localedir@&$localedir&g
-  s&@mandir@&$mandir&g
-    s&\\\${datarootdir}&$datarootdir&g' ;;
-esac
-_ACEOF
-
-# Neutralize VPATH when `$srcdir' = `.'.
-# Shell code in configure.ac might set extrasub.
-# FIXME: do we really want to maintain this feature?
-cat >>$CONFIG_STATUS <<_ACEOF
-  sed "$ac_vpsub
-$extrasub
-_ACEOF
-cat >>$CONFIG_STATUS <<\_ACEOF
-:t
-/@[a-zA-Z_][a-zA-Z_0-9]*@/!b
-s&@configure_input@&$configure_input&;t t
-s&@top_builddir@&$ac_top_builddir_sub&;t t
-s&@srcdir@&$ac_srcdir&;t t
-s&@abs_srcdir@&$ac_abs_srcdir&;t t
-s&@top_srcdir@&$ac_top_srcdir&;t t
-s&@abs_top_srcdir@&$ac_abs_top_srcdir&;t t
-s&@builddir@&$ac_builddir&;t t
-s&@abs_builddir@&$ac_abs_builddir&;t t
-s&@abs_top_builddir@&$ac_abs_top_builddir&;t t
-s&@INSTALL@&$ac_INSTALL&;t t
-$ac_datarootdir_hack
-" $ac_file_inputs | sed -f "$tmp/subs-1.sed" >$tmp/out
-
-test -z "$ac_datarootdir_hack$ac_datarootdir_seen" &&
-  { ac_out=`sed -n '/\${datarootdir}/p' "$tmp/out"`; test -n "$ac_out"; } &&
-  { ac_out=`sed -n '/^[	 ]*datarootdir[	 ]*:*=/p' "$tmp/out"`; test -z "$ac_out"; } &&
-  { echo "$as_me:$LINENO: WARNING: $ac_file contains a reference to the variable \`datarootdir'
-which seems to be undefined.  Please make sure it is defined." >&5
-echo "$as_me: WARNING: $ac_file contains a reference to the variable \`datarootdir'
-which seems to be undefined.  Please make sure it is defined." >&2;}
-
-  rm -f "$tmp/stdin"
-  case $ac_file in
-  -) cat "$tmp/out"; rm -f "$tmp/out";;
-  *) rm -f "$ac_file"; mv "$tmp/out" $ac_file;;
-  esac
- ;;
-
-
-  :C)  { echo "$as_me:$LINENO: executing $ac_file commands" >&5
-echo "$as_me: executing $ac_file commands" >&6;}
- ;;
-  esac
-
-
-  case $ac_file$ac_mode in
-    "depfiles":C) test x"$AMDEP_TRUE" != x"" || for mf in $CONFIG_FILES; do
-  # Strip MF so we end up with the name of the file.
-  mf=`echo "$mf" | sed -e 's/:.*$//'`
-  # Check whether this is an Automake generated Makefile or not.
-  # We used to match only the files named `Makefile.in', but
-  # some people rename them; so instead we look at the file content.
-  # Grep'ing the first line is not enough: some people post-process
-  # each Makefile.in and add a new line on top of each file to say so.
-  # So let's grep whole file.
-  if grep '^#.*generated by automake' $mf > /dev/null 2>&1; then
-    dirpart=`$as_dirname -- "$mf" ||
-$as_expr X"$mf" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
-	 X"$mf" : 'X\(//\)[^/]' \| \
-	 X"$mf" : 'X\(//\)$' \| \
-	 X"$mf" : 'X\(/\)' \| . 2>/dev/null ||
-echo X"$mf" |
-    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
-	    s//\1/
-	    q
-	  }
-	  /^X\(\/\/\)[^/].*/{
-	    s//\1/
-	    q
-	  }
-	  /^X\(\/\/\)$/{
-	    s//\1/
-	    q
-	  }
-	  /^X\(\/\).*/{
-	    s//\1/
-	    q
-	  }
-	  s/.*/./; q'`
-  else
-    continue
-  fi
-  # Extract the definition of DEPDIR, am__include, and am__quote
-  # from the Makefile without running `make'.
-  DEPDIR=`sed -n 's/^DEPDIR = //p' < "$mf"`
-  test -z "$DEPDIR" && continue
-  am__include=`sed -n 's/^am__include = //p' < "$mf"`
-  test -z "am__include" && continue
-  am__quote=`sed -n 's/^am__quote = //p' < "$mf"`
-  # When using ansi2knr, U may be empty or an underscore; expand it
-  U=`sed -n 's/^U = //p' < "$mf"`
-  # Find all dependency output files, they are included files with
-  # $(DEPDIR) in their names.  We invoke sed twice because it is the
-  # simplest approach to changing $(DEPDIR) to its actual value in the
-  # expansion.
-  for file in `sed -n "
-    s/^$am__include $am__quote\(.*(DEPDIR).*\)$am__quote"'$/\1/p' <"$mf" | \
-       sed -e 's/\$(DEPDIR)/'"$DEPDIR"'/g' -e 's/\$U/'"$U"'/g'`; do
-    # Make sure the directory exists.
-    test -f "$dirpart/$file" && continue
-    fdir=`$as_dirname -- "$file" ||
-$as_expr X"$file" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
-	 X"$file" : 'X\(//\)[^/]' \| \
-	 X"$file" : 'X\(//\)$' \| \
-	 X"$file" : 'X\(/\)' \| . 2>/dev/null ||
-echo X"$file" |
-    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
-	    s//\1/
-	    q
-	  }
-	  /^X\(\/\/\)[^/].*/{
-	    s//\1/
-	    q
-	  }
-	  /^X\(\/\/\)$/{
-	    s//\1/
-	    q
-	  }
-	  /^X\(\/\).*/{
-	    s//\1/
-	    q
-	  }
-	  s/.*/./; q'`
-    { as_dir=$dirpart/$fdir
-  case $as_dir in #(
-  -*) as_dir=./$as_dir;;
-  esac
-  test -d "$as_dir" || { $as_mkdir_p && mkdir -p "$as_dir"; } || {
-    as_dirs=
-    while :; do
-      case $as_dir in #(
-      *\'*) as_qdir=`echo "$as_dir" | sed "s/'/'\\\\\\\\''/g"`;; #(
-      *) as_qdir=$as_dir;;
-      esac
-      as_dirs="'$as_qdir' $as_dirs"
-      as_dir=`$as_dirname -- "$as_dir" ||
-$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
-	 X"$as_dir" : 'X\(//\)[^/]' \| \
-	 X"$as_dir" : 'X\(//\)$' \| \
-	 X"$as_dir" : 'X\(/\)' \| . 2>/dev/null ||
-echo X"$as_dir" |
-    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
-	    s//\1/
-	    q
-	  }
-	  /^X\(\/\/\)[^/].*/{
-	    s//\1/
-	    q
-	  }
-	  /^X\(\/\/\)$/{
-	    s//\1/
-	    q
-	  }
-	  /^X\(\/\).*/{
-	    s//\1/
-	    q
-	  }
-	  s/.*/./; q'`
-      test -d "$as_dir" && break
-    done
-    test -z "$as_dirs" || eval "mkdir $as_dirs"
-  } || test -d "$as_dir" || { { echo "$as_me:$LINENO: error: cannot create directory $as_dir" >&5
-echo "$as_me: error: cannot create directory $as_dir" >&2;}
-   { (exit 1); exit 1; }; }; }
-    # echo "creating $dirpart/$file"
-    echo '# dummy' > "$dirpart/$file"
-  done
-done
- ;;
-
-  esac
-done # for ac_tag
-
-
-{ (exit 0); exit 0; }
-_ACEOF
-chmod +x $CONFIG_STATUS
-ac_clean_files=$ac_clean_files_save
-
-
-# configure is writing to config.log, and then calls config.status.
-# config.status does its own redirection, appending to config.log.
-# Unfortunately, on DOS this fails, as config.log is still kept open
-# by configure, so config.status won't be able to write to it; its
-# output is simply discarded.  So we exec the FD to /dev/null,
-# effectively closing config.log, so it can be properly (re)opened and
-# appended to by config.status.  When coming back to configure, we
-# need to make the FD available again.
-if test "$no_create" != yes; then
-  ac_cs_success=:
-  ac_config_status_args=
-  test "$silent" = yes &&
-    ac_config_status_args="$ac_config_status_args --quiet"
-  exec 5>/dev/null
-  $SHELL $CONFIG_STATUS $ac_config_status_args || ac_cs_success=false
-  exec 5>>config.log
-  # Use ||, not &&, to avoid exiting from the if with $? = 1, which
-  # would make configure fail if this is the last instruction.
-  $ac_cs_success || { (exit 1); exit 1; }
-fi
-
diff --git a/graphics/epix/configure.ac b/graphics/epix/configure.ac
deleted file mode 100644
index b751aa69c4..0000000000
--- a/graphics/epix/configure.ac
+++ /dev/null
@@ -1,58 +0,0 @@
-dnl Process this file with autoconf 2.60 or later
-dnl to produce a configure script.
-AC_INIT(epix, 1.2.1)
-AC_PREREQ(2.60)
-AC_CONFIG_SRCDIR(utils.h)
-AM_INIT_AUTOMAKE
-AM_MAINTAINER_MODE
-
-dnl Checks for programs.
-AC_PROG_CXX
-AC_PROG_LN_S
-AC_PROG_RANLIB
-AC_PROG_MAKE_SET
-AC_PROG_INSTALL
-
-dnl User may request epix.el non-installation
-AC_ARG_ENABLE(epix-el,
-              AS_HELP_STRING([--enable-epix-el],
-                             [Install emacs mode for ePiX files]),
-              enable_epix_el=${enableval-yes},
-              enable_epix_el=yes)
-AM_CONDITIONAL(ENABLE_EPIX_EL, [test "$enable_epix_el" = yes])
-
-dnl For all shell scripts
-AC_PATH_PROG(BASH_PATH, bash, /bin/bash)
-AC_ARG_WITH(bash,
-            AS_HELP_STRING([--with-bash=<bash>],
-                           [The path to bash]),
-            BASH_PATH=$withval)
-
-dnl For epix and flix
-AC_PATH_PROG(RUNTIME_COMPILER, g++, g++)
-AC_ARG_WITH(runtime,
-            AS_HELP_STRING([--with-runtime=<g++>],
-                           [The runtime compiler]),
-            RUNTIME_COMPILER=$withval)
-
-dnl AC_ARG_WITH(contrib,
-dnl             AS_HELP_STRING([--with-contrib],
-dnl                            [Build contributed code and docs]))
-dnl AM_CONDITIONAL(BUILD_CONTRIB, [test "$with_contrib" = yes])
-
-dnl Checks for libraries.
-
-dnl Checks for header files.
-AC_HEADER_STDC
-
-dnl Checks for typedefs, structures, and compiler characteristics.
-AC_C_CONST
-AC_C_INLINE
-
-dnl Checks for library functions.
-AC_CHECK_FUNCS(strtod)
-
-AC_CONFIG_FILES([Makefile samples/Makefile doc/Makefile])
-dnl                contrib/Makefile contrib/doc/Makefile])
-
-AC_OUTPUT
diff --git a/graphics/epix/constants.h b/graphics/epix/constants.h
deleted file mode 100644
index c888c1d4da..0000000000
--- a/graphics/epix/constants.h
+++ /dev/null
@@ -1,108 +0,0 @@
-/* 
- * constants.h -- ePiX's hidden compile-time constants
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.15
- * Last Change: September 08, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#ifndef EPIX_CONSTANTS
-#define EPIX_CONSTANTS
-
-#include "length.h"
-
-namespace ePiX {
-
-  // See lengths.cc for units conversion factors
-
-  //// Style Parameters -- min, default, max ////
-  // standard pen widths
-  const length PLAIN_WIDTH("0.4pt");
-  const length  BOLD_WIDTH("0.8pt");
-  const length BBOLD_WIDTH("1.2pt");
-
-
-  // dot diam in pt
-  const double MIN_DOT(1);
-  const double AVG_DOT(4);
-  const double MAX_DOT(36);
-
-  // page length of dash pattern in pt
-  const double MIN_SEP(4);
-  const double AVG_SEP(12);
-  const double MAX_SEP(36);
-
-  // axis tick half-lengths
-  const double MIN_TICK(1);
-  const double AVG_TICK(3);
-  const double MAX_TICK(8);
-
-  // arrow head parameters
-  const double MIN_AWIDTH(1);
-  const double AVG_AWIDTH(3);
-  const double MAX_AWIDTH(12);
-
-  const double MIN_ARATIO(1);
-  const double AVG_ARATIO(5.5);
-  const double MAX_ARATIO(8);
-
-  const double MIN_INSET(-1);
-  const double AVG_INSET(0);
-  const double MAX_INSET(0.95); // not 1, so head can be hatched
-
-
-  // too small/large
-  const double EPIX_EPSILON(0.0001);  // 10^-4 (prints as decimal)
-  const double EPIX_INFTY(100000.0);  // 10^5
-
-  // Numerical constants
-  const double PI_180(0.01745329251994329577);
-  const double TWO_PI(6.28318530717958647692);
-
-  // smallest distance from camera to clipping plane
-  const double MIN_CLIP(0.01);
-
-  // No more than this many minor ticks per segment in log axis
-  const unsigned int MAX_LOG_BASE(100);
-
-  // For output
-  const unsigned int DEF_PRECISION(6);
-  const unsigned int MAX_PRECISION(20);
-
-  // In calculus plotting, the interval between adjacent points is too large
-  // for accuracy. Divide each such interval into this many subintervals
-  const unsigned int EPIX_ITERATIONS(200);
-
-  // Output-formatting constants:
-  const unsigned int EPIX_NUM_PTS(120); // # of points in ellipses, splines
-  const unsigned int EPIX_FILE_WIDTH(70);  // Width of output file
-
-} // end of namespace
-
-#endif /* EPIX_CONSTANTS */
diff --git a/graphics/epix/crop_algorithms.h b/graphics/epix/crop_algorithms.h
deleted file mode 100644
index e81646958e..0000000000
--- a/graphics/epix/crop_algorithms.h
+++ /dev/null
@@ -1,225 +0,0 @@
-/* 
- * crop_algorithms.h -- clipping/cropping templates
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.9
- * Last Change: July 31, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-/*
- * This file defines list<edge> manipulating template functions and
- * associated utilities. Each chop function returns a reference to its
- * list<edge> argument.
- *
- * double height(perp, base, arg)
- * PT cut_location(perp, base, tail, head)
- * cull(edges)     // remove edges whose tail and head are equal
- * loopify(edges)  // replace contiguous unseen edges with one seen edge
- * chop_path(perp, base, edges) // cull to a halfspace/halfplane
- * chop_loop(perp, base, edges) // same, for loops
- */
-
-#ifndef EPIX_CROP_ALGO
-#define EPIX_CROP_ALGO
-
-#include <list>
-
-#include "constants.h"
-
-namespace ePiX {
-
-  // perp assumed to be *unit*
-  template <typename PT>
-    double height(const PT& perp, const PT& base, const PT& arg)
-    {
-      //      return (perp|(operator-(arg, base)));
-      return (perp|(arg - base));
-    }
-
-  // no check for parallel
-  template <typename PT>
-    PT cut_location(const PT& perp, const PT& base, const PT& p1, const PT& p2)
-    {
-      //      PT dir(operator-(p2, p1)); // -dir to base
-      //      return p1 + (((operator-(base, p1))|perp)/(dir|perp))*dir;
-      PT dir(p2 - p1); // -dir to base
-      return p1 + (((base - p1)|perp)/(dir|perp))*dir;
-    }
-
-  // remove edges whose tail, head are equal
-  template <typename PT>
-    std::list<edge_data<PT> >& cull(std::list<edge_data<PT> >& edges)
-    {
-      typename std::list<edge_data<PT> >::iterator ep(edges.begin());
-
-      while (ep != edges.end())
-	{
-	  if ((*ep).is_null())
-	    ep = edges.erase(ep);
-
-	  else
-	    ++ep;
-	}
-
-      return edges;
-    }
-
-  template <typename PT>
-    std::list<edge_data<PT> >& loopify(std::list<edge_data<PT> >& edges)
-    {
-      if (edges.begin() == edges.end())
-	return edges;
-
-      typename std::list<edge_data<PT> >::iterator ep(edges.begin());
-      bool in_path(false); // currently in a visible sublist?
-
-      // After first pass, ep points to first visible edge
-      while (ep != edges.end())
-	{
-	  if (!(*ep).is_seen()) // invisible edge
-	    {
-	      ep=edges.erase(ep);
-	      in_path=false;
-	      continue;
-	    }
-
-	  // else visible edge
-	  if (in_path)
-	    {
-	      ++ep;
-	      continue;
-	    }
-
-	  // else
-	  in_path=true;
-	  if (ep != edges.begin()) // join our tail to previous head
-	    {
-	      typename std::list<edge_data<PT> >::iterator prev(ep);
-	      --prev;
-	      ep = edges.insert(ep, edge_data<PT>((*prev).head(),
-						  (*ep).tail(),
-						  true));
-	      ++ep;
-	      ++ep;
-	    }
-	}
-
-      // all edges examined; if we contain multiple edges, close final cut
-      ep = edges.begin();
-      // contains at most one edge
-      if (ep == edges.end())
-	; // return below
-
-      else if (++ep == edges.end())
-	edges.erase(edges.begin());
-
-      else
-        {
-          ep = edges.end();
-	  --ep;
-          edges.push_back(edge_data<PT>((*ep).head(),
-					(*edges.begin()).tail(),
-                                        true));
-        }
-
-      return edges;
-    } // end of loopify()
-
-
-  // return result of clipping edges to half space/plane through base
-  // with unit inward normal perp
-  template <typename PT>
-    std::list<edge_data<PT> >& chop_path(const PT& perp, const PT& base,
-					 std::list<edge_data<PT> >& edges)
-    {
-      typename std::list<edge_data<PT> >::iterator ep(edges.begin());
-
-      while(ep != edges.end())
-	{
-	  if (!(*ep).is_seen())
-	    {
-	      ++ep;
-	      continue;
-	    }
-
-	  // else
-	  const PT tail((*ep).tail());
-	  const PT head((*ep).head());
-
-	  const double ht_tail(height(perp, base, tail));
-	  const double ht_head(height(perp, base, head));
-
-	  // non-crossings:
-	  // unclipped
-	  if (-EPIX_EPSILON < ht_tail && -EPIX_EPSILON < ht_head)
-	    {
-	      ++ep;
-	      continue;
-	    }
-
-	  // clipped
-	  else if (ht_tail <= 0 && ht_head <= 0)
-	    {
-	      (*ep).seen(false);
-	      ++ep;
-	      continue;
-	    }
-
-	  // else one end below -EPS, one above 0; split edge
-	  const PT crossing(cut_location(perp, base, tail, head));
-
-	  // visibility of segments
-	  bool vis_tail(false), vis_head(true);
-
-	  if (0 < ht_tail)
-	    {
-	      vis_tail=true;
-	      vis_head=false;
-	    }
-
-	  ep = edges.erase(ep);
-	  ep=edges.insert(ep, edge_data<PT>(crossing, head, vis_head));
-	  ep=edges.insert(ep, edge_data<PT>(tail, crossing, vis_tail));
-	  ++ep;
-	  ++ep;
-	} // all edges examined
-
-      return cull(edges);
-    } // end of chop_path()
-
-
-  template <typename PT>
-    std::list<edge_data<PT> >& chop_loop(const PT& perp, const PT& base,
-			    std::list<edge_data<PT> >& edges)
-    {
-      return loopify(chop_path(perp, base, edges));
-    }
-} // end of namespace
-
-#endif /* EPIX_CROP_ALGO */
diff --git a/graphics/epix/cropping.cc b/graphics/epix/cropping.cc
deleted file mode 100644
index 3bc89a030b..0000000000
--- a/graphics/epix/cropping.cc
+++ /dev/null
@@ -1,88 +0,0 @@
-/* 
- * state_data.cc -- Implementation of ePiX's current drawing state
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.4
- * Last Change: June 17, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-/*
- * This file defines (wrapper functions for) static objects that hold
- * the current drawing state
- */
-
-#include <list>
-
-#include "constants.h"
-#include "screen_mask.h"
-#include "mask_ellipse.h"
-#include "mask_rectangle.h"
-
-#include "cropping.h"
-
-namespace ePiX {
-
-  crop_state::crop_state(const crop_state& cs)
-    : crop_state_mask(cs.crop_state_mask->clone()) { }
-
-  crop_state& crop_state::operator= (const crop_state& cs)
-  {
-    if (this != &cs)
-      {
-	screen_mask* tmp(cs.crop_state_mask->clone());
-
-	delete crop_state_mask;
-	crop_state_mask=tmp;
-      }
-
-    return *this;
-  }
-
-  crop_state::~crop_state()
-  {
-    delete crop_state_mask;
-  }
-
-  std::list<edge2d>& crop_state::crop_path(std::list<edge2d>& L) const
-  {
-    return crop_state_mask->crop_path(L);
-  }
-
-  std::list<edge2d>& crop_state::crop_loop(std::list<edge2d>& L) const
-  {
-    return crop_state_mask->crop_loop(L);
-  }
-
-  crop_state& the_crop_box()
-  {
-    const pair M(EPIX_INFTY, EPIX_INFTY);
-    static crop_state* current_crop_box(new crop_state(mask_rectangle(-M,M)));
-    return *current_crop_box;
-  }
-} // end of namespace
diff --git a/graphics/epix/cropping.h b/graphics/epix/cropping.h
deleted file mode 100644
index b8885e528b..0000000000
--- a/graphics/epix/cropping.h
+++ /dev/null
@@ -1,68 +0,0 @@
-/* 
- * cropping.h -- Implementation of ePiX's current drawing state.
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.0.23
- * Last Change: January 07, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-/*
- * The class in this file implements backend for user-level global
- * functions defined in state.h. This header is not part of epix.h.
- */
-#ifndef EPIX_CROPPING
-#define EPIX_CROPPING
-
-#include <string>
-
-#include "edge_data.h"
-#include "screen_mask.h"
-
-namespace ePiX {
-
-  class crop_state {
-  public:
-    crop_state(const screen_mask& M)
-      : crop_state_mask(M.clone()) { }
-
-    crop_state(const crop_state&);
-    crop_state& operator= (const crop_state&);
-    ~crop_state();
-
-    std::list<edge2d>& crop_path(std::list<edge2d>&) const;
-    std::list<edge2d>& crop_loop(std::list<edge2d>&) const;
-
-  private:
-    screen_mask* crop_state_mask;
-
-  }; // end of class crop_state
-
-} // end of namespace
-
-#endif /* EPIX_CROPPING */
diff --git a/graphics/epix/curves.cc b/graphics/epix/curves.cc
deleted file mode 100644
index 5783dcf83c..0000000000
--- a/graphics/epix/curves.cc
+++ /dev/null
@@ -1,663 +0,0 @@
-/* 
- * curves.cc -- polygons, ellipses, circular arcs, splines
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.2.0-2
- * Last Change: September 26, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include <cmath>
-
-#include "constants.h"
-#include "triples.h"
-#include "errors.h"
-
-#include "functions.h"
-#include "pairs.h"
-
-#include "camera.h"
-
-#include "active_screen.h"
-#include "screen.h"
-
-#include "paint_style.h"
-
-#include "state.h"
-#include "domain.h"
-
-#include "arrow_data.h"
-#include "path.h"
-#include "picture.h"
-
-#include "spline.h"
-#include "spline_data.h"
-#include "curves.h"
-
-namespace ePiX {
-
-  // Simple geometric objects
-
-  // Lines take a stretch factor, roughly in percent
-  void line(const P& tail, const P& head, double expand)
-  {
-    unsigned int num_pts(cam().is_linear() ? 2 : EPIX_NUM_PTS);
-
-    path data(tail, head, expand, num_pts);
-    data.draw();
-  }
-
-  void line(const P& tail, const P& head, double expand,
-	    unsigned int num_pts)
-  {
-    if (!cam().is_linear())
-      num_pts = (unsigned int) max(num_pts, EPIX_NUM_PTS);
-
-    path data(tail, head, expand, num_pts);
-    data.draw();
-  }
-
-  // Line(p1, p2) -- draw uncropped portion of long line through p1, p2
-  void Line(const P& arg1, const P& arg2)
-  {
-    P dir(arg2-arg1);
-    const double denom(norm(dir));
-
-    if (EPIX_EPSILON < denom)
-      {
-	// TO DO: Not as robust as could be:
-	// 1. Assumes endpoint(s) are fairly close to origin
-	// 2. May not handle non-linear lenses well
-	dir *= 1/denom;
-	line(arg1-EPIX_INFTY*dir, arg1+EPIX_INFTY*dir);
-      }
-  } // end of Line
-
-
-  // point-slope form
-  void Line(const P& tail, double slope)
-  {
-    Line(tail, tail+P(1, slope, 0));
-  }
-
-
-  void triangle(const P& p1, const P& p2, const P& p3)
-  {
-    path data;
-    if (cam().is_linear())
-      data.pt(p1).pt(p2).pt(p3);
-    else
-      {
-	// Magic number 60
-	const unsigned int N(60);
-	const double dt(1.0/N);
-
-	const P step12(dt*(p2-p1));
-	const P step23(dt*(p3-p2));
-	const P step31(dt*(p1-p3));
-
-	for (unsigned int i=0; i<N; ++i)
-	  data.pt(p1 + i*step12);
-
-	for (unsigned int i=0; i<N; ++i)
-	  data.pt(p2 + i*step23);
-
-	for (unsigned int i=0; i<N; ++i)
-	  data.pt(p3 + i*step31);
-      }
-
-    data.close().fill(the_paint_style().fill_flag());
-    data.draw();
-  }
-
-  void quad(const P& p1, const P& p2, const P& p3, const P& p4)
-  {
-    path data;
-    if (cam().is_linear())
-      data.pt(p1).pt(p2).pt(p3).pt(p4);
-    else
-      {
-	// Magic number 60 -> quad has 240 pts, is printed in one segment
-	const unsigned int N(60);
-	const double dt(1.0/N);
-
-	const P step12(dt*(p2-p1));
-	const P step23(dt*(p3-p2));
-	const P step34(dt*(p4-p3));
-	const P step41(dt*(p1-p4));
-
-	for (unsigned int i=0; i<N; ++i)
-	  data.pt(p1 + i*step12);
-
-	for (unsigned int i=0; i<N; ++i)
-	  data.pt(p2 + i*step23);
-
-	for (unsigned int i=0; i<N; ++i)
-	  data.pt(p3 + i*step34);
-
-	for (unsigned int i=0; i<N; ++i)
-	  data.pt(p4 + i*step41);
-      }
-
-    data.close().fill(the_paint_style().fill_flag());
-    data.draw();
-  }
-
-  // Draw coordinate rectangle with opposite corners as given. Arguments
-  // must lie is a plane parallel to a coordinate plane, but not on a 
-  // line parallel to a coordinate axis.
-
-  void rect(const P& p1, const P& p2)
-  {
-    P diagonal(p2 - p1);
-    P jump;
-    int perp_count(0);
-
-    // count coordinate axes perp to diagonal and flag normal
-    if (fabs(diagonal|E_1) < EPIX_EPSILON)
-      {
-	++perp_count;
-	jump = E_2&(diagonal);
-      }
-    if (fabs(diagonal|E_2) < EPIX_EPSILON)
-      {
-	++perp_count;
-	jump = E_3&(diagonal);
-      }
-    if (fabs(diagonal|E_3) < EPIX_EPSILON)
-      {
-	++perp_count;
-	jump = E_1&(diagonal);
-      }
-
-    quad(p1, p1+jump, p2, p2-jump);
-  } // end rect
-
-  void dart(const P& tail, const P& head)
-  { 
-    arrow(tail, head, 0.5); 
-  }
-
-  void aarrow(const P& tail, const P& head, double scale)
-  {
-    P midpt(0.5*(tail+head));
-    arrow(midpt, tail, scale);
-    arrow(midpt, head, scale);
-  }
-
-  void ellipse(const P& center, const P& axis1, const P& axis2,  
-	       double t_min, double t_max, unsigned int num_pts)
-  {
-    path data(center, axis1, axis2, t_min, t_max, num_pts);
-
-
-    if (min(fabs(t_max-t_min)/full_turn(), 1) == 1)
-      {
-	data.close();
-	if (the_paint_style().fill_flag())
-	  data.fill();
-      }
-    data.draw();
-  }  
-
-  void ellipse(const P& center, const P& axis1, const P& axis2,  
-	       double t_min, double t_max)
-  {
-    ellipse(center, axis1, axis2, t_min, t_max, EPIX_NUM_PTS);
-  }
-
-
-  void ellipse(const P& center, const P& axis1, const P& axis2)
-  {
-    ellipse(center, axis1, axis2, 0, full_turn());
-  }
-
-
-  void ellipse_arc(const P& center, const P& axis1, const P& axis2,
-		   double t_min, double t_max)
-  {
-    ellipse(center, axis1, axis2, t_min, t_max);
-  }
-
-
-  void arrow(const P& tail, const P& head, double scale)
-  {
-    std::vector<P> shaft(2);
-    shaft.at(0) = tail;
-    shaft.at(1) = head;
-
-    arrow_data data(shaft, tail, head, scale);
-    data.draw();
-  }
-
-  void ellipse(const P& center, const P& radius)
-  {
-    ellipse(center, radius.x1()*E_1, radius.x2()*E_2);
-  }
-
-  // Standard half-ellipse functions
-  void ellipse_left (const P& center, const P& radius)
-  {
-    ellipse(center, radius.x1()*E_1, radius.x2()*E_2, 
-	    0.25*full_turn(), 0.75*full_turn());
-  }
-
-  void ellipse_right (const P& center, const P& radius)
-  {
-    ellipse(center, radius.x1()*E_1, radius.x2()*E_2, 
-	    -0.25*full_turn(), 0.25*full_turn());
-  }
-
-  void ellipse_top (const P& center, const P& radius)
-  {
-    ellipse(center, radius.x1()*E_1, radius.x2()*E_2, 0, 0.5*full_turn());
-  }
-
-  void ellipse_bottom (const P& center, const P& radius)
-  {
-    ellipse(center, radius.x1()*E_1, radius.x2()*E_2, -0.5*full_turn(), 0);
-  }
-
-  void arc(const P& center, double r, 
-	   double start,  double finish)
-  { 
-    ellipse(center, r*E_1, r*E_2, start, finish); 
-  }
-
-  void arrow(const P& center, const P& axis1, const P& axis2,
-	     double t_min, double t_max, double scale)
-  {
-    // EPIX_NUM_PTS pts = one full turn; scale accordingly
-    double frac(fabs(t_max-t_min)/full_turn());
-    unsigned int num_pts((unsigned int) max(2, ceil(frac*EPIX_NUM_PTS)));
-
-    const double dt((t_max - t_min)/num_pts);
-
-    std::vector<P> shaft(num_pts+1);
-
-    for (unsigned int i=0; i <= num_pts; ++i)
-      {
-	double t(t_min + i*dt);
-	shaft.at(i) = center + ((Cos(t)*axis1)+(Sin(t)*axis2));
-      }
-
-    arrow_data data(shaft, shaft.at(num_pts-1), shaft.at(num_pts), scale);
-    data.draw();
-  }
-
-  // circular arcs parallel to (x,y)-plane
-
-  void arc_arrow(const P& center, double r, 
-		 double start, double finish, double scale)
-  {
-    arrow(center, r*E_1, r*E_2, start, finish, scale);
-  }
-
-
-  // quadratic spline
-  void spline(const P& p1, const P& p2, const P& p3, unsigned int num_pts)
-  {
-    path data(p1, p2, p3, num_pts);
-    data.draw();
-  }
-
-  void spline(const P& p1, const P& p2, const P& p3)
-  {
-    spline(p1, p2, p3, EPIX_NUM_PTS);
-  }
-
-  void arrow(const P& p1, const P& p2, const P& p3, double scale)
-  {
-    const unsigned int num_pts(EPIX_NUM_PTS);
-    const double dt(1.0/num_pts);
-    std::vector<P> shaft(num_pts+1);
-
-    for (unsigned int i=0; i <= num_pts; ++i)
-      shaft.at(i) = spl_pt(p1, p2, p3, i*dt);
-
-    arrow_data data(shaft, shaft.at(num_pts-1), shaft.at(num_pts), scale);
-    data.draw();
-  }
-
-  // cubic spline
-  void spline(const P& p1, const P& p2, 
-	      const P& p3, const P& p4, unsigned int num_pts)
-  {
-    path data(p1, p2, p3, p4, num_pts);
-    data.draw();
-  }
-
-  void spline(const P& p1, const P& p2, const P& p3, const P& p4)
-  {
-    spline(p1, p2, p3, p4, EPIX_NUM_PTS);
-  }
-
-  // natural spline through points
-  void spline(const std::vector<P>& data, unsigned int num_pts)
-  {
-    n_spline tmp(data, data.at(0) == data.at(data.size()-1));
-    path trace(tmp.data(num_pts));
-
-    trace.draw();
-  }
-
-  void arrow(const P& p1, const P& p2, const P& p3, const P& p4, double scale)
-  {
-    const unsigned int num_pts(EPIX_NUM_PTS);
-    const double dt(1.0/num_pts);
-    std::vector<P> shaft(num_pts+1);
-
-    for (unsigned int i=0; i <= num_pts; ++i)
-      shaft.at(i) = spl_pt(p1, p2, p3, p4, i*dt);
-
-    arrow_data data(shaft, shaft.at(num_pts-1), shaft.at(num_pts), scale);
-    data.draw();
-  }
-
-
-  // n1 x n2 Cartesian grid, where coarse = (n1, n2)
-  void grid(const P& p1, const P& p2, mesh coarse, mesh fine)
-  {
-    P diagonal(p2 - p1);
-    P jump1, jump2; // sides of grid
-
-    int perp_count(0);
-
-    int N1(coarse.n1());
-    int N2(coarse.n2());
-
-    // count coordinate axes diagonal is perp to and flag normal
-    if (fabs(diagonal|E_1) < EPIX_EPSILON)
-      {
-	++perp_count;
-	jump1 = E_2&diagonal;
-	jump2 = E_3&diagonal;
-
-      }
-    if (fabs(diagonal|E_2) < EPIX_EPSILON)
-      {
-	++perp_count;
-	jump1 = E_3&diagonal;
-	jump2 = E_1&diagonal;
-      }
-    if (fabs(diagonal|E_3) < EPIX_EPSILON)
-      {
-	++perp_count;
-	jump1 = E_1&diagonal;
-	jump2 = E_2&diagonal;
-      }
-
-    if (perp_count != 1)
-      epix_warning("Ignoring degenerate coordinate grid");
-
-    else
-      {
-	// grid line spacing
-	P grid_step1((1.0/N1)*jump1);
-	P grid_step2((1.0/N2)*jump2);
-
-	// makes grid subject to filling
-	rect(p1, p1 + jump1 + jump2);
-
-	for (int i=1; i < N1; ++i)
-	  line(p1+i*grid_step1, p1+i*grid_step1+jump2, 0, fine.n2());
-
-	for (int j=1; j < N2; ++j)
-	  line(p1+j*grid_step2, p1+j*grid_step2+jump1, 0, fine.n1());
-      }
-  }
-
-  // Grids that fill bounding_box with default camera
-  void grid(const P& p1, const P& p2, unsigned int n1, unsigned int n2)
-  {
-    grid(p1, p2, mesh(n1, n2), mesh(1,1));
-  }
-
-  void grid(unsigned int n1, unsigned int n2)
-  {
-    grid(active_screen()->bl(), active_screen()->tr(), n1, n2);
-  }
-
-
-  // polar grid with specified radius, mesh (rings and sectors), and resolution
-  void polar_grid(double radius, mesh coarse, mesh fine)
-  {
-    for (int i=1; i <= coarse.n1(); ++i) 
-      ellipse(P(0,0,0), 
-	      (i*radius/coarse.n1())*E_1, (i*radius/coarse.n1())*E_2, 
-	      0, full_turn(), fine.n2());
-
-    for (int j=0; j < coarse.n2(); ++j)
-      line(P(0,0,0), polar(radius, j*(full_turn())/coarse.n2()), 
-	   0, 2*fine.n1());
-  }
-
-  void polar_grid(double radius, unsigned int n1, unsigned int n2)
-  {
-    polar_grid(radius, mesh(n1,n2), mesh(n1,EPIX_NUM_PTS));
-  }
-
-
-  // logarithmic grids
-
-  // local helpers
-  void grid_lines1_log(double x_lo, double x_hi, double y_lo, double y_hi,
-		       unsigned int segs, unsigned int base)
-  {
-    if (segs == 0)
-      return;
-
-    const double dx((x_hi-x_lo)/segs); // "major grid" steps
-    const double denom(log(base));  // "minor"/log grid scale factor
-
-    for (unsigned int i=0; i < segs; ++i)
-      for (unsigned int j=1; j<base; ++j)
-	{
-	  double x_tmp(x_lo + dx*(i+log(j)/denom));
-
-	  line(P(x_tmp, y_lo), P(x_tmp, y_hi));
-	}
-
-    line(P(x_hi,y_lo), P(x_hi, y_hi)); // draw rightmost line manually
-  }
-
-  void grid_lines2_log(double x_lo, double x_hi, double y_lo, double y_hi,
-		       unsigned int segs, unsigned int base)
-  {
-    if (segs == 0)
-      return;
-
-    const double dy((y_hi-y_lo)/segs);
-    const double denom(log(base));
-
-    for (unsigned int i=0; i < segs; ++i)
-      for (unsigned int j=1; j<base; ++j)
-	{
-	  double y_tmp(y_lo + dy*(i+log(j)/denom));
-
-	  line(P(x_lo, y_tmp), P(x_hi, y_tmp));
-	}
-
-    line(P(x_hi,y_lo), P(x_hi, y_hi));
-  }
-
-  // global functions
-  void log_grid(const P& p1, const P& p2,
-		unsigned int segs1, unsigned int segs2,
-		unsigned int base1, unsigned int base2)
-  {
-    grid_lines1_log(min(p1.x1(), p2.x1()), max(p1.x1(), p2.x1()),
-		    min(p1.x2(), p2.x2()), max(p1.x2(), p2.x2()),
-		    segs1, base1);
-
-    grid_lines2_log(min(p1.x1(), p2.x1()), max(p1.x1(), p2.x1()),
-		    min(p1.x2(), p2.x2()), max(p1.x2(), p2.x2()),
-		    segs2, base2);
-  }
-
-  void log1_grid(const P& p1, const P& p2,
-		 unsigned int segs1, unsigned int segs2,
-		 unsigned int base1)
-  {
-    grid_lines1_log(min(p1.x1(), p2.x1()), max(p1.x1(), p2.x1()),
-		    min(p1.x2(), p2.x2()), max(p1.x2(), p2.x2()),
-		    segs1, base1);
-
-    grid_lines2_log(min(p1.x1(), p2.x1()), max(p1.x1(), p2.x1()),
-		    min(p1.x2(), p2.x2()), max(p1.x2(), p2.x2()),
-		    segs2, 2);
-  }
-
-  void log2_grid(const P& p1, const P& p2,
-		 unsigned int segs1, unsigned int segs2,
-		 unsigned int base2)
-  {
-    grid_lines1_log(min(p1.x1(), p2.x1()),
-		    max(p1.x1(), p2.x1()),
-		    min(p1.x2(), p2.x2()),
-		    max(p1.x2(), p2.x2()),
-		    segs1, 2);
-
-    grid_lines2_log(min(p1.x1(), p2.x1()),
-		    max(p1.x1(), p2.x1()),
-		    min(p1.x2(), p2.x2()),
-		    max(p1.x2(), p2.x2()),
-		    segs2, base2);
-  }
-
-
-  // grids fill current bounding box
-  void log_grid(unsigned int segs1, unsigned int segs2,
-		unsigned int base1, unsigned int base2)
-  {
-    grid_lines1_log(active_screen()->h_min(), active_screen()->h_max(),
-		    active_screen()->v_min(), active_screen()->v_max(),
-		    segs1, base1);
-
-    grid_lines2_log(active_screen()->h_min(), active_screen()->h_max(),
-		    active_screen()->v_min(), active_screen()->v_max(),
-		    segs2, base2);
-  }
-
-  void log1_grid(unsigned int segs1, unsigned int segs2,
-		 unsigned int base1)
-  {
-    grid_lines1_log(active_screen()->h_min(), active_screen()->h_max(),
-		    active_screen()->v_min(), active_screen()->v_max(),
-		    segs1, base1);
-
-    grid_lines2_log(active_screen()->h_min(), active_screen()->h_max(),
-		    active_screen()->v_min(), active_screen()->v_max(),
-		    segs2, 2);
-  }
-
-  void log2_grid(unsigned int segs1, unsigned int segs2,
-		 unsigned int base2)
-  {
-    grid_lines1_log(active_screen()->h_min(), active_screen()->h_max(),
-		    active_screen()->v_min(), active_screen()->v_max(),
-		    segs1, 2);
-
-    grid_lines2_log(active_screen()->h_min(), active_screen()->h_max(),
-		    active_screen()->v_min(), active_screen()->v_max(),
-		    segs2, base2);
-  }
-
-
-  // fractal generation
-  //
-  // The basic recursion unit is a piecewise-linear path whose segments
-  // are parallel to spokes on a wheel, labelled modulo <spokes>.
-  // Recursively up to <depth>, each segment is replaced by a copy of the
-  // recursion unit, scaled and rotated in order to join p to q.
-  //
-  // Kludge: pre_seed[0] = spokes, pre_seed[1] = length of seed;
-  //
-  // Sample data for _/\_ standard Koch snowflake:
-  // const int seed[] = {6, 4, 0, 1, -1, 0};
-
-  P jump(int spokes, int length, const std::vector<int>& seed)
-  {
-    P sum(P(0,0));
-
-    for (int i=0; i< length; ++i)
-      sum += cis(seed.at(i)*(full_turn())/spokes);
-
-    return sum;
-  }
-
-  void fractal(const P& p, const P& q, const int depth, const int *pre_seed)
-  {
-    int spokes(pre_seed[0]);
-    int seed_length(pre_seed[1]);
-    std::vector<int> seed(seed_length);
-
-    // extract seed from pre_seed
-    for (int i=0; i<seed_length; ++i)
-      seed.at(i) = pre_seed[i+2];
-
-    // Unit-length steps in <seed> sequence add up to <scale>
-    P scale(jump(spokes, seed_length, seed));
-
-    // Number of points in final fractal
-    int length(1+(int)pow(seed_length, depth));
-    std::vector<int> dir(length); // stepping information
-    std::vector<P> data(length);  // vertices
-
-    // dir[] starts out [0, 1, -1, 0, ..., 0] (seed_length^depth entries)
-    // then take repeated "Kronecker sum" with seed = [0, 1, -1, 0]
-
-    for(int i=0; i<seed_length; ++i)
-      dir.at(i) = seed.at(i);
-
-    for(int i=1; i<depth; ++i) // recursively fill dir array
-      for(int j=0; j < pow(seed_length,i); ++j)
-	for(int k=seed_length-1; 0 < k; --k)
-	  dir.at(k*(int)pow(seed_length,i) + j) = dir.at(j) + seed.at(k);
-
-    P curr(p);
-    // 10/09/06: -depth -> 1-depth
-    double radius(pow(norm(scale), 1-depth));
-
-    for(int i=0; i<length; ++i)
-      {
-	data.at(i) = curr;
-	// increment between successive points as a pair
-	pair temp((polar(radius, dir.at(i)*(full_turn())/spokes))*pair(q-p));
-
-	// complex arithmetic
-	temp /= pair(scale); // homothety to join p to q
-
-	curr += P(temp.x1(), temp.x2());
-      }
-
-    path fractal(data, false, false);
-    fractal.draw();
-  }
-
-} // end of namespace
diff --git a/graphics/epix/curves.h b/graphics/epix/curves.h
deleted file mode 100644
index d15966d9b0..0000000000
--- a/graphics/epix/curves.h
+++ /dev/null
@@ -1,187 +0,0 @@
-/*
- * curves.h -- Ellipses, arcs, splines, coordinate grids
- *
- * This file is part of ePiX, a C++ library for creating high-quality
- * figures in LaTeX
- *
- * Version 1.1.10
- * Last Change: August 08, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#ifndef EPIX_CURVES
-#define EPIX_CURVES
-
-#include <vector>
-
-#include "constants.h"
-
-namespace ePiX {
-
-  class P;
-  class mesh;
-
-  // lines can be "stretched" by double parameter
-  void line(const P& tail, const P& head, double expand=0); 
-  void line(const P& tail, const P& head, double expand,
-	    unsigned int num_pts);
-
-  // "Visible" portion of the line through p1, p2
-  void Line(const P& tail, const P& head);
-
-  // point-slope form
-  void Line(const P&, double);
-
-  void triangle(const P&, const P&, const P&);
-  void quad(const P&, const P&, const P&, const P&);
-
-  void rect(const P&, const P&);
-  void rect(const P&, const P&, bool solid);
-
-  // arrows
-  void arrow(const P& tail, const P& head, double scale=1);
-  void dart(const P& tail, const P& head);
-
-  // double-tipped
-  void aarrow(const P& tail, const P& head, double scale=1);
-
-  // arbitrary elliptical arc
-  void arrow(const P& center, const P& axis1, const P& axis2,
-	     double t_min, double t_max, double scale=1);
-
-  // Algebraic curves (elliptical and circular arcs, splines)
-  void ellipse(const P& center, const P& axis1, const P& axis2); // full turn
-
-  void ellipse(const P& center, const P& axis1, const P& axis2,  
-	       double t_min, double t_max); // angle range
-
-  void ellipse(const P& center, const P& axis1, const P& axis2,  
-	       double t_min, double t_max, unsigned int num_pts);
-
-  // for backward compatibility
-  void ellipse_arc(const P& center, const P& axis1, const P& axis2,
-		   double t_min, double t_max);
-
-  // old style "center and polyradius"
-  void ellipse (const P& center, const P& radius);
-
-  // Standard half-ellipse functions
-  void ellipse_left (const P&, const P&);
-  void ellipse_right (const P&, const P&);
-  void ellipse_top (const P&, const P&);
-  void ellipse_bottom (const P&, const P&);
-
-  // Circular arcs parallel to (x,y)-plane
-  void arc(const P& center, double r, 
-	   double start,  double finish);
-
-  void arc_arrow (const P& center, double r, 
-		  double start, double finish, 
-		  double scale=1);
-
-
-  // Quadratic and cubic splines/spline arrows
-  void spline(const P& p1, const P& p2, const P& p3, unsigned int num_pts);
-  void spline(const P& p1, const P& p2, const P& p3);
-
-  void arrow(const P& p1, const P& p2, const P& p3, double scale=1);
-
-  void spline (const P& p1, const P& p2, const P& p3, const P& p4,
-	       unsigned int num_pts);
-  void spline (const P& p1, const P& p2, const P& p3, const P& p4);
-
-  void arrow(const P&, const P&, const P&, const P&, double scale=1);
-
-  // natural spline
-  void spline(const std::vector<P>&, unsigned int num_pts);
-
-
-  // A "mesh" is an ordered pair of positive integers, and is used to
-  // specify the "fineness" of a grid. Grids, like parametric surface
-  // meshes, have a "coarse mesh" -- the numbers of grid intervals in
-  // each direction, and a "fine mesh" -- the numbers of points used
-  // to render the grid lines. Since an ePiX camera does not always
-  // map lines in object space to lines on the screen, grid lines cannot
-  // generally be drawn using only two points.
-  // A grid may look strange unless each component of fine is a multiple
-  // of the corresponding entry of coarse, of course. :)
-
-  // Cartesian grid of specified size, mesh, and resolution
-  void grid(const P& arg1, const P& arg2, mesh coarse, mesh fine);
-
-  // coarse = fine = (n1,n2)
-  void grid(const P& arg1, const P& arg2,
-	    unsigned int n1=1, unsigned int n2=1);
-  void grid(unsigned int n1=1, unsigned int n2=1);
-
-  // polar grid of specified radius, mesh (rings and sectors), and resolution
-  void polar_grid(double r, mesh coarse, mesh fine);
-
-  // polar grid with n1 rings and n2 sectors
-  void polar_grid(double r, unsigned int n1, unsigned int n2);
-
-
-  // (semi-)logarithmic grids specified by corners and numbers of orders of
-  // magnitude or grid divisions in each direction. Optional arguments
-  // specify the log base (10 by default). If corners are omitted, the grid
-  // fills the bounding box.
-  void log_grid(const P& arg1, const P& arg2,
-		unsigned int segs1, unsigned int segs2,
-		unsigned int base1=10, unsigned int base2=10);
-
-  void log1_grid(const P& arg1, const P& arg2,
-		 unsigned int segs1, unsigned int segs2,
-		 unsigned int base1=10);
-
-  void log2_grid(const P& arg1, const P& arg2,
-		 unsigned int segs1, unsigned int segs2,
-		 unsigned int base2=10);
-
-  void log_grid(unsigned int segs1, unsigned int segs2,
-		unsigned int base1=10, unsigned int base2=10);
-
-  void log1_grid(unsigned int segs1, unsigned int segs2,
-		 unsigned int base1=10);
-
-  void log2_grid(unsigned int segs1, unsigned int segs2,
-		 unsigned int base2=10);
-
-  // fractal generation
-  //
-  // The basic "level-1" recursion unit is a piecewise-linear path whose 
-  // segments are parallel to spokes on a wheel, labelled modulo <spokes>.
-  // Recursively up to <depth>, each segment is replaced by a copy of the
-  // recursion unit.
-  //
-  // Sample data for _/\_ standard Koch snowflake:
-  // const int pre_seed[] = {6, 4, 0, 1, -1, 0};
-  // pre_seed[0] = spokes, pre_seed[1] = seed_length;
-
-  void fractal (const P& p, const P& q, const int depth, const int *pre_seed);
-
-} // end of namespace
-
-#endif /* EPIX_CURVES */
diff --git a/graphics/epix/data_bins.cc b/graphics/epix/data_bins.cc
deleted file mode 100644
index 9474c1de25..0000000000
--- a/graphics/epix/data_bins.cc
+++ /dev/null
@@ -1,411 +0,0 @@
-/* 
- * data_bins.cc -- ePiX::data_bins class for histogram data
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.2.0-2
- * Last Change: September 26, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#include <cmath>
-#include <string>
-#include <sstream>
-#include <list>
-#include <vector>
-
-#include "errors.h"
-
-#include "constants.h"
-#include "functions.h"
-#include "triples.h"
-
-#include "path.h"
-#include "spline.h"
-
-#include "curves.h"
-
-#include "data_bins.h"
-
-namespace ePiX {
-
-  // print summary statistics
-  static void __epix_out_of_range(const std::string& fcn,
-				  unsigned int lo, unsigned int hi,
-				  unsigned int hits)
-  {
-    if (0 == lo + hi && 0 == hits)
-      return;
-
-    // else
-    if (0 < lo + hi)
-      {
-	std::stringstream buf;
-	buf << fcn << " has " << lo + hi << " point(s) out of range: ";
-
-	bool need_comma(false);
-
-	if (0 < lo)
-	  {
-	    buf << lo << " below";
-	    need_comma = true;
-	  }
-
-	if (0 < hi)
-	  {
-	    if (need_comma)
-	      buf << ", ";
-
-	    buf << hi << " above";
-	  }
-	epix_warning(buf.str());
-      }
-
-    if (0 < hits)
-      {
-	std::stringstream buf;
-	buf << fcn << " has " << hits/2 << " point(s) on cuts";
-	epix_warning(buf.str());
-      }
-  }
-
-
-  //// histogram data bin ////
-  class d_bin {
-  public:
-    d_bin(double low, double high)
-      : m_lo(low), m_hi(high), m_dbl_count(0) { }
-
-    double add_datum(double x)
-    {
-      if (x < m_lo || m_hi < x)
-	return 0.0;
-
-      else if (m_lo < x && x < m_hi)
-	{
-	  m_dbl_count += 2;
-	  return 1.0;
-	}
-
-      else // x == m_lo || x == m_hi
-	{
-	  ++m_dbl_count;
-	  return 0.5;
-	}
-    }
-
-    // draw rectangle; height = scale*population
-    void draw_ht(double scale) const
-    {
-      rect(P(m_lo,0), P(m_hi, 0.5*scale*m_dbl_count));
-    }
-
-    // area = scale*population
-    void draw_area(double scale) const
-    {
-      if (EPIX_EPSILON < m_hi - m_lo)
-	rect(P(m_lo,0), P(m_hi, 0.5*scale*m_dbl_count/(m_hi - m_lo)));
-    }
-
-    double lo() const
-    {
-      return m_lo;
-    }
-
-    double hi() const
-    {
-      return m_hi;
-    }
-
-    double ht(double scale) const
-    {
-      return 0.5*scale*m_dbl_count;
-    }
-
-    P loc(double scale) const
-    {
-      return P(0.5*(m_lo + m_hi), 0.5*scale*m_dbl_count);
-    }
-
-    d_bin* clone() const
-    {
-      return new d_bin(*this);
-    }
-
-  private:
-    double m_lo, m_hi;    // end values
-
-    // twice the number of elements; endpoint hits count as 1
-    unsigned int m_dbl_count;
-  }; // end of class d_bin
-
-
-  //// data_bins functions ////
-  data_bins::data_bins(double lo, double hi, unsigned int n)
-    : m_lo_val(min(lo, hi)), m_hi_val(max(lo, hi)),
-      m_lo_ct(0), m_hi_ct(0), m_pop(0), m_cut_hits(0),
-      m_cuts_locked(false)
-  {
-    // divide [lo, hi] into n pieces (n>0), or into unit pieces (n=0)
-    unsigned int ct(n>0 ? n : (unsigned int)(m_hi_val - m_lo_val));
-    const double dx((m_hi_val - m_lo_val)/ct);
-
-    for (unsigned int i=0; i<=ct; ++i)
-      m_cuts.push_back(m_lo_val + i*dx);
-  }
-
-  data_bins::data_bins(const data_bins& db)
-    : m_lo_val(db.m_lo_val), m_hi_val(db.m_hi_val),
-      m_lo_ct(db.m_lo_ct), m_hi_ct(db.m_hi_ct),
-      m_pop(db.m_pop), m_cut_hits(db.m_cut_hits),
-      m_cuts_locked(db.m_cuts_locked), m_cuts(db.m_cuts)
-  {
-    for (std::list<d_bin*>::const_iterator p=db.m_bins.begin();
-	 p != db.m_bins.end(); ++p)
-      m_bins.push_back((*p)->clone());
-  }
-
-  data_bins& data_bins::operator= (const data_bins& db)
-  {
-    if (this != &db)
-      {
-        std::list<d_bin*> tmp;
-        for (std::list<d_bin*>::const_iterator p=db.m_bins.begin();
-             p!=db.m_bins.end(); ++p)
-          tmp.push_back((*p)->clone());
-
-	// assign data
-	m_lo_val = db.m_lo_val;
-	m_hi_val = db.m_hi_val;
-
-	m_lo_ct = db.m_lo_ct;
-	m_hi_ct = db.m_hi_ct;
-	m_pop = db.m_pop;
-	m_cut_hits = db.m_cut_hits;
-	m_cuts_locked = db.m_cuts_locked;
-
-        // deallocate memory
-        for (std::list<d_bin*>::iterator p=m_bins.begin();
-             p!=m_bins.end(); ++p)
-          delete *p;
-
-	m_cuts = db.m_cuts;
-	swap(m_bins, tmp);
-      }
-
-    return *this;
-  }
-
-  data_bins::~data_bins()
-  {
-    for (std::list<d_bin*>::iterator p=m_bins.begin(); p!=m_bins.end(); ++p)
-      delete *p;
-  }
-
-
-  data_bins& data_bins::cut(double x)
-  {
-    if (m_cuts_locked)
-      epix_warning("cut() called on locked data_bins, no action");
-
-    else if (x < m_lo_val || m_hi_val < x)
-      epix_warning("cut() out of range, no action");
-
-    else
-      m_cuts.push_back(x);
-
-    return *this;
-  }
-
-  data_bins& data_bins::read(const std::vector<double>& data)
-  {
-    if (0 < data.size())
-      {
-	if (!m_cuts_locked)
-	  initialize();
-
-	for (std::vector<double>::const_iterator p=data.begin();
-	     p != data.end(); ++p)
-	  insert(*p);
-      }
-    return *this;
-  }
-
-  unsigned int data_bins::pop() const
-  {
-    return m_pop;
-  }
-
-  // rectangles
-  void data_bins::histogram(double scale) const
-  {
-    if (m_pop == 0)
-      return;
-
-    // else
-    __epix_out_of_range("histogram", m_lo_ct, m_hi_ct, m_cut_hits);
-
-    // const double denom((m_hi_val - m_lo_val)/m_pop);
-    const double adj(scale/m_pop);
-
-    for (std::list<d_bin*>::const_iterator p=m_bins.begin();
-	 p != m_bins.end(); ++p)
-      (*p)->draw_area(adj);
-  }
-
-  void data_bins::bar_chart(double scale) const
-  {
-    if (m_pop == 0)
-      return;
-
-    // else
-    __epix_out_of_range("bar_chart", m_lo_ct, m_hi_ct, m_cut_hits);
-
-    const double adj(scale/m_pop); // scale=1 -> ht=frac of pop in bin
-
-    for (std::list<d_bin*>::const_iterator p=m_bins.begin();
-	 p != m_bins.end(); ++p)
-      (*p)->draw_ht(adj);
-  }
-
-  // piecewise-cubic interpolation of bar_chart
-  void data_bins::plot(double scale) const
-  {
-    if (m_pop == 0)
-      return;
-
-    // else
-    __epix_out_of_range("data_bins::plot", m_lo_ct, m_hi_ct, m_cut_hits);
-
-    // get rectangle corners
-    std::vector<P> vertices;
-
-    std::list<d_bin*>::const_iterator bn(m_bins.begin());
-    vertices.push_back(P((*bn)->lo(),0));
-
-    for (bn = m_bins.begin(); bn != m_bins.end(); ++bn)
-      {
-	vertices.push_back(P((*bn)->lo(), (*bn)->ht(scale/m_pop)));
-	vertices.push_back(P((*bn)->hi(), (*bn)->ht(scale/m_pop)));
-      }
-
-    --bn; // last bin
-    vertices.push_back(P((*bn)->hi(),0));
-
-    const unsigned int N(vertices.size());
-
-    // draw piecewise cubic interpolation
-    line(vertices.at(0), 0.5*(vertices.at(0) + vertices.at(1)));
-
-    // Magic number 20 to reduce file size
-    for (unsigned int i=1; i< N-1; ++i)
-      spline(0.5*(vertices.at(i-1) + vertices.at(i)),
-	     vertices.at(i),
-	     vertices.at(i),
-	     0.5*(vertices.at(i) + vertices.at(i+1)), 20);
-
-    line(0.5*(vertices.at(N-2) + vertices.at(N-1)), vertices.at(N-1));
-  } // end of plot(scale)
-
-
-  // private bookkeeping functions
-  void data_bins::initialize()
-  {
-    if (!m_cuts_locked) // defensive redundancy
-      {
-	// sort list of cuts, remove duplicates, and lock
-	m_cuts.sort();
-	m_cuts.unique();
-
-	m_cuts_locked=true;
-
-	// allocate d_bins
-	for (std::list<double>::const_iterator curr = m_cuts.begin();
-	     curr != m_cuts.end(); ++curr)
-	  {
-	    std::list<double>::const_iterator next(curr);
-	    ++next;
-
-	    if (next != m_cuts.end() && *curr != *next)
-	      m_bins.push_back(new d_bin(*curr, *next));
-
-	    else if (*curr != m_hi_val)
-	      m_bins.push_back(new d_bin(*curr, m_hi_val));
-	  }
-      }
-  }
-
-  // Ideally no data lies on a cut, but we'll cope as well as possible
-  // otherwise. Data on an end cut is "out of range". Data on an interior
-  // cut contributes 1/2 to the population of each adjacent bin.
-  void data_bins::insert(double x)
-  {
-    ++m_pop;
-
-    std::list<d_bin*>::iterator p(m_bins.begin());
-
-    // check end bins first
-    if (x <= m_lo_val)
-      {
-	++m_lo_ct;
-	if (fabs(x - m_lo_val) < EPIX_EPSILON)
-	  {
-	    (*p)->add_datum(x);
-	    m_cut_hits += 2;
-	  }
-	return;
-      }
-
-    if (m_hi_val <= x)
-      {
-	++m_hi_ct;
-	if (fabs(x - m_hi_val) < EPIX_EPSILON)
-	  {
-	    p = m_bins.end();
-	    --p;
-	    (*p)->add_datum(x);
-	    m_cut_hits += 2;
-	  }
-	return;
-      }
-
-    // else
-    double success(0.0);
-    p = m_bins.begin();
-
-    // try "normal" bins serially
-    while (success < 0.75 && p!=m_bins.end()) // success is a half-integer
-      {
-	double ct((*p++)->add_datum(x)); // 1 for yes, 0.5 for endpt, 0 for no
-	success += ct;
-	if (fabs(ct - 0.5) < EPIX_EPSILON)
-	  ++m_cut_hits;
-      }
-
-    if (success < 0.75) // still not added!
-      epix_warning("data_bin::insert() internal error");
-  }
-} // end of namespace
diff --git a/graphics/epix/data_bins.h b/graphics/epix/data_bins.h
deleted file mode 100644
index e0d9a200e6..0000000000
--- a/graphics/epix/data_bins.h
+++ /dev/null
@@ -1,101 +0,0 @@
-/* 
- * data_bins.h -- ePiX::data_bins class for histogram data
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.19
- * Last Change: September 17, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-/*
- * This file provides the "data_bins" class.
- *
- * An object of type data_bins models a closed interval [lo, hi]
- * divided into subintervals (not necessarily of equal length). Each
- * subinterval is a "d_bin", whose endpoints are "cuts". A data_bins
- * can read and sort numerical data, count how many numbers lie in
- * each bin, and print the result as a bar chart (rectangle height
- * proportional to population), histogram (area proportional to
- * population), or as a spline interpolation.
- *
- * Ideally no data lies outside (lo, hi) or on a cut. Data on an end
- * cut is "out of range", data on an interior cut contributes 1/2 to
- * the population of each adjacent bin. A summary statistic warning is
- * printed if any points are out of range or lie on a cut.
- */
-
-#ifndef EPIX_DATA_BINS
-#define EPIX_DATA_BINS
-
-#include <vector>
-#include <list>
-
-namespace ePiX {
-
-  class d_bin;
-
-  class data_bins {
-  public:
-    data_bins(double lo, double hi, unsigned int n=1);
-
-    data_bins(const data_bins&);
-    data_bins& operator= (const data_bins&);
-    ~data_bins();
-
-    data_bins&  cut(double); // add a cut
-    data_bins& read(const std::vector<double>&);
-
-    unsigned int pop() const; // current population
-
-    // draw rectangles
-    void histogram(double scale=1) const; // area prop to pop
-    void bar_chart(double scale=1) const; // height prop to pop
-    void plot(double scale=1) const;  // smooth interpolation
-
-  private:
-    double m_lo_val;
-    double m_hi_val;
-
-    unsigned int m_lo_ct; // population smaller than m_lo_val
-    unsigned int m_hi_ct; // population larger than m_hi_val
-    unsigned int m_pop;   // current total population
-
-    unsigned int m_cut_hits; // number of data on a cut
-    bool m_cuts_locked; // true once we read data
-
-    std::list<double> m_cuts;
-    std::list<d_bin*> m_bins;
-
-    // bookkeeping
-    void initialize();         // convert cuts to bins and lock
-    void insert(double); // add data point
-  }; // end of class data_bins
-
-} // end of namespace
-
-#endif /* EPIX_DATA_BINS */
diff --git a/graphics/epix/data_file.cc b/graphics/epix/data_file.cc
deleted file mode 100644
index fb2e6a5a5b..0000000000
--- a/graphics/epix/data_file.cc
+++ /dev/null
@@ -1,687 +0,0 @@
-/* 
- * data_file.cc -- ePiX::data_file class
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.2.0-2
- * Last Change: September 26, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#include <cmath>
-#include <fstream>
-#include <sstream>
-#include <list>
-#include <vector>
-#include <stdexcept>
-
-#include "errors.h"
-
-#include "functions.h"
-#include "triples.h"
-#include "path.h"
-#include "spline.h"
-
-#include "label_data.h"
-#include "curves.h"
-
-#include "interval.h"
-#include "data_bins.h"
-#include "data_mask.h"
-#include "data_file.h"
-
-namespace ePiX {
-
-  const std::string default_delim("\t");
-  const std::string default_commt("%");
-
-  // magic number -- precision for data_file.write() 
-  const unsigned int PRECISION(6);
-
-  double truncate(double arg, const unsigned int n)
-  {
-    if (fabs(arg) < pow(0.1, n))
-      return 0;
-
-    return arg;
-  }
-
-  // warning message for data_file::tokenize
-  void non_parsable(const std::string& msg)
-  {
-    std::stringstream obuf;
-    obuf << "data_file::tokenise():" << std::endl
-	 << "  Non-parsable input \"" << msg << "\", setting value to 0";
-    epix_warning(obuf.str());
-  }
-
-  //// private data_file functions ////
-  // returns # of columns, i.e. # of entries in first parsable row
-  unsigned int data_file::entries(const char* filename)
-  {
-    std::ifstream input(filename);
-    if (!input)
-      {
-	epix_warning("Cannot open file \""+std::string(filename)+"\"");
-	return(0);
-      }
-
-    // else
-    std::string linebuf;
-    std::vector<double> tmp;
-
-    while (getline(input, linebuf) && tmp.size() == 0)
-      {
-	// strip comments
-	linebuf = linebuf.substr(0, linebuf.find_first_of(m_commt));
-	if (linebuf.length() > 0)
-	  tmp = tokenise(linebuf);
-      }
-
-    input.close();
-
-    if (tmp.size() == 0)
-      {
-	std::stringstream obuf; // solely for code readability :)
-	obuf << "File \"" << std::string(filename)
-	     << "\" contains no parsable data";
-
-	epix_warning(obuf.str());
-      }
-
-    return tmp.size();
-  } // end of entries(const char*)
-
-
-  // private function: 
-  // Tokenise line using our delimiter, return a vector of doubles
-  std::vector<double> data_file::tokenise(std::string line)
-  {
-    size_t pos(line.find(m_delim, 0)); // first delimiter
-    std::string tmpStr;                // current chunk of input
-    double tmpDbl;                     // current parsed chunk
-    std::vector<double> tmpVec;        // output found so far
-
-    // read current line into a vector of doubles
-    while(pos != std::string::npos)
-      {
-	tmpStr = line.substr(0, pos);
-	line.erase(0, pos+1);
-	std::istringstream convStr(tmpStr);
-
-	if (!(convStr >> tmpDbl))
-	  {
-	    tmpDbl = 0;
-	    non_parsable(convStr.str());
-	  }
-
-	tmpVec.push_back(tmpDbl);
-	pos = line.find(m_delim, 0);
-      }
-
-    if (line.size()) // There's input remaining
-      {
-	std::istringstream convStr(line);
-
-	if (!(convStr >> tmpDbl))
-	  {
-	    tmpDbl = 0;
-	    non_parsable(convStr.str());
-	  }
-
-	else
-	  tmpVec.push_back(tmpDbl);
-      }
-
-    return tmpVec;
-  }
-
-  //// public data_file functions ////
-  data_file::data_file(unsigned int n)
-    : m_precision(PRECISION), m_data(n),
-      m_delim(default_delim),
-      m_commt(default_commt) { }
-
-  // provide two version to avoid exposing default delim, commt
-  data_file::data_file(const char* filename,
-		       const std::string& delim, const std::string& commt )
-    : m_precision(PRECISION), m_delim(delim), m_commt(commt)
-  {
-    // get number of columns by parsing first line of file
-    const unsigned int N(entries(filename));
-    m_data.resize(N);
-
-    if (N > 0) // file contains data
-      read(filename);
-
-  } // end of data_file()
-
-  // filename-only version
-  data_file::data_file(const char* filename)
-    : m_precision(PRECISION), m_delim(default_delim), m_commt(default_commt)
-  {
-    // get number of columns by parsing first line of file
-    const unsigned int N(entries(filename));
-    m_data.resize(N);
-
-    if (N > 0) // file contains data
-      read(filename);
-
-  } // end of data_file(const char*)
-
-
-  // file made from components
-  data_file::data_file(double f(double),
-		       double t_min, double t_max, unsigned int num_pts)
-    : m_precision(PRECISION), m_data(1),
-      m_delim(default_delim), m_commt(default_commt)
-  {
-    const double dt((t_max - t_min)/num_pts);
-    for (unsigned int i=0; i<= num_pts; ++i)
-      m_data.at(0).push_back(f(t_min+i*dt));
-  }
-
-  data_file::data_file(double f1(double), double f2(double), 
-		       double t_min, double t_max, unsigned int num_pts)
-    : m_precision(PRECISION), m_data(2),
-      m_delim(default_delim), m_commt(default_commt)
-  {
-    const double dt((t_max - t_min)/num_pts);
-    for (unsigned int i=0; i<= num_pts; ++i)
-      {
-	m_data.at(0).push_back(f1(t_min+i*dt));
-	m_data.at(1).push_back(f2(t_min+i*dt));
-      }
-  }
-
-
-  data_file::data_file(double f1(double), double f2(double), double f3(double),
-		       double t_min, double t_max, unsigned int num_pts)
-    : m_precision(PRECISION), m_data(3),
-      m_delim(default_delim), m_commt(default_commt)
-  {
-    const double dt((t_max - t_min)/num_pts);
-    for (unsigned int i=0; i<= num_pts; ++i)
-      {
-	m_data.at(0).push_back(f1(t_min+i*dt));
-	m_data.at(1).push_back(f2(t_min+i*dt));
-	m_data.at(2).push_back(f3(t_min+i*dt));
-      }
-  }
-
-
-  data_file& data_file::read(const char* filename)
-  {
-    unsigned int columns(entries(filename));
-    if (columns != m_data.size())
-      {
-	std::stringstream msg;
-	msg << "Column count mismatch in file " << filename;
-	epix_warning(msg.str());
-      }
-
-    else if (0 < columns)
-      {
-	std::ifstream input(filename);
-	std::string linebuf;
-	std::vector<double> line;
-
-	bool warned(false);
-
-	while (getline(input, linebuf))
-	  {
-	    // strip comments
-	    linebuf = linebuf.substr(0, linebuf.find_first_of(m_commt));
-	    if (linebuf.length() > 0)
-	      {
-		line = tokenise(linebuf);
-
-		if (line.size() > m_data.size())
-		  {
-		    if (!warned)
-		      {
-			epix_warning("File has more columns than allocated");
-			warned = true;
-		      }
-		  }
-		else if (line.size() < m_data.size())
-		  {
-		    if (!warned)
-		      {
-			epix_warning("File has fewer columns than allocated");
-			warned = true;
-		      }
-		  }
-		else
-		  {
-		    for (unsigned int i = 0; i < m_data.size(); i++)
-		      m_data.at(i).push_back(line.at(i));
-		  }
-	      } // linebuf non-empty
-	  } // end of file
-	input.close();
-      }
-    return *this;
-  } // end of data_file::read(const char*, const std::string&)
-
-
-  // transform column(s)
-  data_file& data_file::transform(double f(double), unsigned int col)
-  {
-    unsigned int rows(m_data.at(0).size());
-
-    if (0 < col) // apply to selected column
-      for (unsigned int i=0; i<rows; ++i)
-	m_data.at(col-1).at(i) = f(m_data.at(col-1).at(i));
-
-    else // apply to all columns, default
-      {
-	for (unsigned int j=0; j<m_data.size(); ++j)
-	  for (unsigned int i=0; i<rows; ++i)
-	    m_data.at(j).at(i) = f(m_data.at(j).at(i));
-      }
-
-    return *this;
-  }
-
-    // apply f to selected columns, components of image go back to columns
-  data_file& data_file::transform(P f(double, double),
-				  unsigned int col1, unsigned int col2)
-  {
-    unsigned int rows(m_data.at(0).size());
-
-    for (unsigned int i=0; i<rows; ++i)
-      {
-	P tmp(f(m_data.at(col1 - 1).at(i), m_data.at(col2 - 1).at(i)));
-
-	m_data.at(col1 - 1).at(i) = tmp.x1();
-	m_data.at(col2 - 1).at(i) = tmp.x2();
-      }
-
-    return *this;
-  }
-
-  data_file& data_file::transform(P f(double, double, double),
-				  unsigned int col1, unsigned int col2)
-  {
-    unsigned int rows(m_data.at(0).size());
-
-    for (unsigned int i=0; i<rows; ++i)
-      {
-	P tmp(f(m_data.at(col1 - 1).at(i), m_data.at(col2 - 1).at(i), 0));
-
-	m_data.at(col1 - 1).at(i) = tmp.x1();
-	m_data.at(col2 - 1).at(i) = tmp.x2();
-      }
-
-    return *this;
-  }
-
-  data_file& data_file::transform(P f(double, double, double),
-				  unsigned int col1,
-				  unsigned int col2,
-				  unsigned int col3)
-  {
-    unsigned int rows(m_data.at(0).size());
-
-    for (unsigned int i=0; i<rows; ++i)
-      {
-	P tmp(f(m_data.at(col1 - 1).at(i),
-		m_data.at(col2 - 1).at(i),
-		m_data.at(col3 - 1).at(i)));
-
-	m_data.at(col1 - 1).at(i) = tmp.x1();
-	m_data.at(col2 - 1).at(i) = tmp.x2();
-	m_data.at(col3 - 1).at(i) = tmp.x3();
-      }
-
-    return *this;
-  }
-
-  // Erase rows where the data is outside of the specified range
-  data_file& data_file::prune(const data_mask& dm, const unsigned int col)
-  {
-    std::vector<std::vector<double>::iterator> iter(m_data.size());
-    for (unsigned int i = 0; i < m_data.size(); i++)
-      iter.at(i) = m_data.at(i).begin();
-
-    while (iter.at(0) != m_data.at(0).end())
-      {
-	if ( dm.masks(*iter.at(col-1)) )
-	  for (unsigned int j = 0; j < m_data.size(); j++)
-	    m_data.at(j).erase(iter.at(j));
-
-	else
-	  for (unsigned int j = 0; j < m_data.size(); j++)
-	    iter.at(j)++;
-      }
-
-    return *this;
-  }
-
-  data_file& data_file::prune(const interval& range, const unsigned int col)
-  {
-    data_mask dm(range);
-    return prune(dm, col);
-  }
-
-  data_file& data_file::prune(double rmin, double rmax,
-			      const unsigned int col)
-  {
-    data_mask dm(rmin, rmax);
-    return prune(dm, col);
-  }
-
-
-  // (col1|col2)
-  double data_file::dot(unsigned int col1, unsigned int col2) const
-  {
-    double sum(0);
-
-    if ((col1 > m_data.size()) || (col2 > m_data.size()) )
-      epix_warning("Invalid column index in dot product");
-	
-    else
-      for (unsigned int i=0; i < m_data.at(0).size(); ++i)
-	sum += m_data.at(col1-1).at(i)*m_data.at(col2-1).at(i);
-
-    return sum;
-  } // end of dot
-
-  // avg (mean) of col1
-  double data_file::avg(unsigned int col1) const
-  {
-    double sum(0);
-
-    if (col1 > m_data.size())
-      epix_warning("Invalid column index in mean");
-	
-    else
-      for (unsigned int i=0; i < m_data.at(0).size(); ++i)
-	sum += m_data.at(col1-1).at(i);
-
-    return sum/m_data.at(0).size();
-  } // end of avg
-
-  // variance (x|x) - n*\bar{x}^2
-  double data_file::var(unsigned int col1) const
-  {
-    double mean(avg(col1));
-
-    return dot(col1, col1) - mean*mean*m_data.at(0).size();
-  } // end of var
-
-  // covariance (x|y) - n*\bar{x}*\bar{y}
-  double data_file::covar(unsigned int col1, unsigned int col2) const
-  {
-    return dot(col1, col2) - (m_data.at(0).size())*avg(col1)*avg(col2);
-  } // end of covar
-
-  void data_file::regression(unsigned int col1, unsigned int col2) const
-  {
-    Line(P(avg(col1), avg(col2)), covar(col1, col2)/var(col1));
-  }
-
-
-  //// Output functions ////
-  // return selected column
-  std::vector<double> data_file::column(unsigned int n) const
-  {
-    if (1 <= n && n <= m_data.size())
-      return m_data.at(n-1);
-    else
-      {
-	if (0 < m_data.size())
-	  {
-	    epix_warning("Out of range argument to data_file::column()");
-	    return m_data.at(0);
-	  }
-	else
-	  {
-	    epix_warning("data_file::column() requested for empty file");
-	    std::vector<double> err_val(1, 0);
-	    return err_val;
-	  }
-      }
-  }
-
-  // apply f to selected column
-  std::vector<double> data_file::column(double f(double), unsigned int n) const
-  {
-    // must copy data
-    std::vector<double> value(m_data.at(0).size());
-    unsigned int col(n);
-
-    if (col < 1 || m_data.size() < col)
-      {
-	if (0 < m_data.size())
-	  {
-	    epix_warning("Out of range argument to data_file::column()");
-	    col=1;
-	  }
-	else
-	  {
-	    epix_warning("data_file::column() requested for empty file");
-	    std::vector<double> err_val(1, 0);
-	    return err_val;
-	  }
-      }
-
-    for (unsigned int i=0; i<m_data.at(0).size(); ++i)
-      value.at(i) = f(m_data.at(col-1).at(i));
-
-    return value;
-  }
-
-
-  // set precision for write()
-  void data_file::precision(const unsigned int n) const
-  {
-    m_precision=n;
-  }
-
-  // write file or selected columns
-  void data_file::write(const char* filename) const
-  {
-    std::ofstream output(filename);
-    if (!output)
-      {
-	epix_warning("data_file::write() cannot open file");
-	return;
-      }
-
-    // else
-    output.precision(m_precision);
-    output.setf(std::ios_base::showpoint); // pad with 0s
-    output.setf(std::ios_base::right);     // right-justify
-
-    unsigned int cols(m_data.size());
-
-    for (unsigned int j=0; j < m_data.at(0).size(); ++j)
-      {
-	output << m_data.at(0).at(j);
-	for (unsigned int i=1; i < cols; ++i)
-	  output << m_delim << m_data.at(i).at(j);
-
-	output << std::endl;
-      }
-    output.close();
-  }
-
-
-  void data_file::write(const char* fname, std::string pt_out(double, double),
-			unsigned int col1, unsigned int col2) const
-  {
-    std::ofstream output(fname);
-    if (!output)
-      {
-	epix_warning("data_file::write() cannot open file");
-	return;
-      }
-
-    // else
-    output.precision(m_precision);
-
-    for (unsigned int i=0; i < m_data.at(0).size(); ++i)
-      try 
-	{
-	  output << pt_out(m_data.at(col1-1).at(i), m_data.at(col2-1).at(i));
-	}
-
-      catch (std::out_of_range) 
-	{
-	  epix_warning("data_file::write(): Invalid column index");
-	  return;
-	}
-
-    output.close();
-  } // end of data_file::write(const char*, string function)
-
-  // experimental: LaTeX tabular environment
-  void data_file::tabular(const char* filename,
-			  const std::string& alignment,
-			  const std::string& legend) const
-  {
-    std::ofstream output(filename);
-    if (!output)
-      {
-	epix_warning("data_file::table() cannot open file");
-	return;
-      }
-
-    // else
-    using std::endl;
-
-    output.precision(m_precision);
-    unsigned int cols(m_data.size());
-
-    output << "\\begin{tabular}{" << alignment << "}" << endl
-	   << "\\hline" << endl;
-    if (legend != "")
-      output << legend << endl << "\\hline" << endl;
-
-    for (unsigned int j=0; j < m_data.at(0).size(); ++j)
-      {
-	output << "$" << truncate(m_data.at(0).at(j), m_precision) << "$";
-	for (unsigned int i=1; i < cols; ++i)
-	  output << " & $" << truncate(m_data.at(i).at(j), m_precision) << "$";
-      
-	output << " \\\\" << endl;
-      }
-
-    output << "\\hline" << endl
-	   << "\\end{tabular}" << endl;
-
-    output.close();
-  } // end of data_file::tabular()
-
-
-  void data_file::plot(epix_mark_type TYPE,
-		       unsigned int col1, unsigned int col2, unsigned int col3,
-		       P f(double, double, double)) const
-  {
-    unsigned int num_entries(m_data.at(0).size());
-
-    std::vector<P> data(num_entries);
-
-    // create path
-    for (unsigned int i=0; i < num_entries; ++i)
-      try 
-	{
-	  if (col3 == 0)
-	    data.at(i) = f(m_data.at(col1-1).at(i),
-			   m_data.at(col2-1).at(i),
-			   0);
-
-	  else
-	    data.at(i) = f(m_data.at(col1-1).at(i),
-			   m_data.at(col2-1).at(i),
-			   m_data.at(col3-1).at(i));
-	}
-
-      catch (std::out_of_range) 
-	{
-	  epix_warning("data_file::plot(): Invalid column index");
-	  return;
-	}
-
-    // and write it
-    if (PATH == TYPE) // N.B. Unaffected by "select"
-      {
-	path temp(data, false, false); // not closed or filled
-	temp.draw();
-      }
-
-    else
-      for (unsigned int i=0; i < num_entries; ++i)
-	{
-	  //	if (m_select(data.at(i)))
-	  label_data temp(data.at(i), TYPE);
-	  temp.draw();
-	}
-  }
-
-  void data_file::plot(epix_mark_type TYPE, P f(double, double, double),
-		       unsigned int col1, unsigned int col2,
-		       unsigned int col3) const
-  {
-    plot(TYPE, col1, col2, col3, f);
-  }
-
-  //// global functions ////
-  void plot(const char* filename, epix_mark_type TYPE,
-	    unsigned int col1, unsigned int col2, unsigned int col3,
-	    P f(double, double, double))
-  {
-    data_file temp(filename);
-    temp.plot(TYPE, col1, col2, col3, f);
-  }
-
-  void plot(const char* filename, epix_mark_type TYPE,
-	    P f(double, double, double),
-	    unsigned int col1, unsigned int col2, unsigned int col3)
-  {
-    data_file temp(filename);
-    temp.plot(TYPE, col1, col2, col3, f);
-  }
-
-  // pass 3rd arg by value
-  void histogram(const char* filename, unsigned int col, data_bins db,
-		 double scale)
-  {
-    data_file temp(filename);
-    db.read(temp.column(col));
-    db.histogram(scale);
-  }
-
-  void bar_chart(const char* filename, unsigned int col, data_bins db,
-		 double scale)
-  {
-    data_file temp(filename);
-    db.read(temp.column(col));
-    db.bar_chart(scale);
-  }
-} // end of namespace
diff --git a/graphics/epix/data_file.h b/graphics/epix/data_file.h
deleted file mode 100644
index e5a3af956e..0000000000
--- a/graphics/epix/data_file.h
+++ /dev/null
@@ -1,172 +0,0 @@
-/* 
- * data_file.h -- ePiX::data_file class
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.6
- * Last Change: July 04, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#ifndef EPIX_DATA_FILE
-#define EPIX_DATA_FILE
-
-#include <vector>
-#include <list>
-
-#include "enums.h"
-
-namespace ePiX {
-
-  class data_bins;
-  class data_mask;
-  class interval;
-
-  class data_file {
-  public:
-    explicit data_file(unsigned int n=2);
-
-    // get size from first line of file;
-    // provide two versions to avoid exposing default delim/commt strings
-    data_file(const char* filename,
-	      const std::string& delim, const std::string& commt);
-    explicit data_file(const char* filename);
-
-    // file made from components
-    data_file(double f(double),
-	      double t_min, double t_max, unsigned int num_pts);
-
-    data_file(double f1(double), double f2(double), 
-	      double t_min, double t_max, unsigned int num_pts);
-
-    data_file(double f1(double), double f2(double), double f3(double),
-	      double t_min, double t_max, unsigned int num_pts);
-
-    // input
-    data_file& read(const char*);
-
-    // transform column(s)
-    data_file& transform(double f(double), unsigned int col=0);
-
-    // apply f to selected columns; components of image go back to columns
-    data_file& transform(P f(double, double),
-			 unsigned int col1=1, unsigned int col2=2);
-
-    data_file& transform(P f(double, double, double),
-			 unsigned int col1, unsigned int col2);
-
-    data_file& transform(P f(double, double, double),
-			 unsigned int col1,
-			 unsigned int col2,
-			 unsigned int col3);
-
-    // remove rows where specified entry is masked or outside interval/range
-    data_file& prune(const data_mask&, const unsigned int col);
-    data_file& prune(const interval&, const unsigned int col);
-    data_file& prune(double, double, const unsigned int col);
-
-    // basic statistical operations on columns
-    double dot(unsigned int col1, unsigned int col2) const; // dot product
-    double avg(unsigned int col1) const;  // mean
-    double var(unsigned int col1) const;  // |x|^2 - n*avg^2
-    double covar(unsigned int col1, unsigned int col2) const;
-    void   regression(unsigned int col1, unsigned int col2) const;
-
-
-    // output functions
-    // extract column
-    std::vector<double> column(unsigned int) const;
-    // apply f to values
-    std::vector<double> column(double f(double), unsigned int) const;
-
-    // set C++ output precision for write
-    void precision(unsigned int n=6) const;
-
-	// Setters and getters for delimiter and comment character
-	void delimiter(const char* delim) { m_delim = delim; }
-	std::string delimiter() const { return m_delim; }
-
-	void comment(const char* commt) { m_commt = commt; }
-	std::string comment() const { return m_commt; }
-
-    // write raw data to file
-    void write(const char* filename) const;
-
-    // write selected columns formatted by string-valued function
-    void write(const char* filename, std::string pt_out(double, double),
-	       unsigned int col1=1, unsigned int col2=2) const;
-
-    // LaTeX tabular environment
-    void tabular(const char* filename,
-		 const std::string& alignment,
-		 const std::string& legend="") const;
-
-
-    /*
-    // (un)set cropping criterion for plotting
-    void select(bool Fsel(P));
-    void select(const selection&); // e.g. select(all());
-    */
-
-    // scatter plots; f applied to selected columns
-    void plot(epix_mark_type TYPE,
-	      unsigned int col1=1, unsigned int col2=2, unsigned int col3=0,
-	      P f(double, double, double) = xyz) const;
-
-    void plot(epix_mark_type TYPE, P f(double, double, double),
-	      unsigned int col1=1, unsigned int col2=2,
-	      unsigned int col3=0) const;
-
-  private:
-	std::vector<double> tokenise(std::string line);
-	unsigned int entries(const char* filename);
-
-    mutable unsigned int m_precision;
-    // selection m_select;
-
-    std::vector<std::vector<double> > m_data;
-    std::string m_delim;		// Field delimiter
-    std::string m_commt;		// Comment character
-  }; // end of class data_file
-
-
-  //// Global functions that use file_data, data_bins ////
-  void plot(const char* filename, epix_mark_type TYPE,
-	    unsigned int col1=1, unsigned int col2=2, unsigned int col3=0,
-	    P f(double, double, double) = xyz);
-
-  void plot(const char* filename, epix_mark_type TYPE,
-	    P f(double, double, double),
-	    unsigned int col1=1, unsigned int col2=2, unsigned int col3=0);
-
-  // pass 3rd arg by value
-  void histogram(const char* filename, unsigned int col, data_bins,
-		 double scale=1);
-  void bar_chart(const char* filename, unsigned int col, data_bins,
-		 double scale=1);
-} // end of namespace
-
-#endif /* EPIX_DATA_FILE */
diff --git a/graphics/epix/data_mask.cc b/graphics/epix/data_mask.cc
deleted file mode 100644
index d2f0290426..0000000000
--- a/graphics/epix/data_mask.cc
+++ /dev/null
@@ -1,76 +0,0 @@
-/* 
- * data_mask.cc -- ePiX::data_mask class
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.8
- * Last Change: July 22, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#include "functions.h"
-#include "interval.h"
-#include "data_mask.h"
-
-namespace ePiX {
-
-  double identity(double x) { return x; }
-
-  data_mask::data_mask(std::string arg)
-    : m_range(arg), m_filter(identity), m_reverse(false) { }
-
-  data_mask::data_mask(std::string arg, double f(double))
-    : m_range(arg), m_filter(f), m_reverse(false) { }
-
-
-  data_mask::data_mask(const interval& range)
-    : m_range(range), m_filter(identity), m_reverse(false) { }
-
-  data_mask::data_mask(const interval& range, double f(double))
-    : m_range(range), m_filter(f), m_reverse(false) { }
-
-  data_mask::data_mask(double arg1, double arg2)
-    : m_range(arg1, arg2), m_filter(identity), m_reverse(false) { }
-
-  data_mask::data_mask(double arg1, double arg2, double f(double))
-    : m_range(arg1, arg2), m_filter(f), m_reverse(false) { }
-
-  data_mask& data_mask::reverse()
-  {
-    m_reverse = !m_reverse;
-    return *this;
-  }
-
-  bool data_mask::masks(double x) const
-  {
-    bool masked(!m_range.contains(m_filter(x)));
-
-    if (m_reverse)
-      masked = !masked;
-
-    return masked;
-  }
-} // end of namespace
diff --git a/graphics/epix/data_mask.h b/graphics/epix/data_mask.h
deleted file mode 100644
index e522af0975..0000000000
--- a/graphics/epix/data_mask.h
+++ /dev/null
@@ -1,66 +0,0 @@
-/* 
- * data_mask.h -- ePiX::data_mask, for selective row removal from data_file
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.6
- * Last Change: July 3, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#ifndef EPIX_DATA_MASK
-#define EPIX_DATA_MASK
-
-#include <string>
-
-#include "interval.h"
-
-namespace ePiX {
-
-  class data_mask {
-  public:
-    data_mask(std::string);
-    data_mask(std::string, double f(double));
-
-    data_mask(const interval& range);
-    data_mask(const interval& range, double f(double));
-
-    data_mask(double range_min, double range_max);
-    data_mask(double range_min, double range_max,
-	      double f(double));
-
-    data_mask& reverse(); // negate mask criterion
-    bool masks(double) const; // true if we mask arg 
-
-  private:
-    interval m_range;
-    double (*m_filter)(double); // filter criterion
-    bool m_reverse;
-
-  }; // end of data_mask
-} // end of namespace
-
-#endif /* EPIX_DATA_MASK */
diff --git a/graphics/epix/debug.h b/graphics/epix/debug.h
deleted file mode 100644
index 204063447a..0000000000
--- a/graphics/epix/debug.h
+++ /dev/null
@@ -1,37 +0,0 @@
-#ifndef EPIX_DEBUG
-#define EPIX_DEBUG
-
-#include <iostream>
-#include <cstdlib>
-#include <sstream>
-#include <string>
-
-#include "pairs.h"
-#include "triples.h"
-
-#include "errors.h"
-
-namespace ePiX
-{
-  inline void debug_msg(const std::string& msg)
-    {
-      std::cerr << msg << std::endl;
-    }
-
-  inline void debug_print(const pair& arg, const std::string& msg="")
-    {
-      std::cerr << msg << " (" 
-		<< arg.x1() << ", " 
-		<< arg.x2() << ")" << std::endl;
-    }
-
-  inline void debug_print(const P& arg, const std::string& msg="")
-    {
-      std::cerr << msg << " (" 
-		<< arg.x1() << ", " 
-		<< arg.x2() << ", " 
-		<< arg.x3() << ")" << std::endl;
-    }
-
-}
-#endif /* EPIX_DEBUG */
diff --git a/graphics/epix/depcomp b/graphics/epix/depcomp
deleted file mode 100644
index 04701da536..0000000000
--- a/graphics/epix/depcomp
+++ /dev/null
@@ -1,530 +0,0 @@
-#! /bin/sh
-# depcomp - compile a program generating dependencies as side-effects
-
-scriptversion=2005-07-09.11
-
-# Copyright (C) 1999, 2000, 2003, 2004, 2005 Free Software Foundation, Inc.
-
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2, or (at your option)
-# any later version.
-
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
-# 02110-1301, USA.
-
-# As a special exception to the GNU General Public License, if you
-# distribute this file as part of a program that contains a
-# configuration script generated by Autoconf, you may include it under
-# the same distribution terms that you use for the rest of that program.
-
-# Originally written by Alexandre Oliva <oliva@dcc.unicamp.br>.
-
-case $1 in
-  '')
-     echo "$0: No command.  Try \`$0 --help' for more information." 1>&2
-     exit 1;
-     ;;
-  -h | --h*)
-    cat <<\EOF
-Usage: depcomp [--help] [--version] PROGRAM [ARGS]
-
-Run PROGRAMS ARGS to compile a file, generating dependencies
-as side-effects.
-
-Environment variables:
-  depmode     Dependency tracking mode.
-  source      Source file read by `PROGRAMS ARGS'.
-  object      Object file output by `PROGRAMS ARGS'.
-  DEPDIR      directory where to store dependencies.
-  depfile     Dependency file to output.
-  tmpdepfile  Temporary file to use when outputing dependencies.
-  libtool     Whether libtool is used (yes/no).
-
-Report bugs to <bug-automake@gnu.org>.
-EOF
-    exit $?
-    ;;
-  -v | --v*)
-    echo "depcomp $scriptversion"
-    exit $?
-    ;;
-esac
-
-if test -z "$depmode" || test -z "$source" || test -z "$object"; then
-  echo "depcomp: Variables source, object and depmode must be set" 1>&2
-  exit 1
-fi
-
-# Dependencies for sub/bar.o or sub/bar.obj go into sub/.deps/bar.Po.
-depfile=${depfile-`echo "$object" |
-  sed 's|[^\\/]*$|'${DEPDIR-.deps}'/&|;s|\.\([^.]*\)$|.P\1|;s|Pobj$|Po|'`}
-tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`}
-
-rm -f "$tmpdepfile"
-
-# Some modes work just like other modes, but use different flags.  We
-# parameterize here, but still list the modes in the big case below,
-# to make depend.m4 easier to write.  Note that we *cannot* use a case
-# here, because this file can only contain one case statement.
-if test "$depmode" = hp; then
-  # HP compiler uses -M and no extra arg.
-  gccflag=-M
-  depmode=gcc
-fi
-
-if test "$depmode" = dashXmstdout; then
-   # This is just like dashmstdout with a different argument.
-   dashmflag=-xM
-   depmode=dashmstdout
-fi
-
-case "$depmode" in
-gcc3)
-## gcc 3 implements dependency tracking that does exactly what
-## we want.  Yay!  Note: for some reason libtool 1.4 doesn't like
-## it if -MD -MP comes after the -MF stuff.  Hmm.
-  "$@" -MT "$object" -MD -MP -MF "$tmpdepfile"
-  stat=$?
-  if test $stat -eq 0; then :
-  else
-    rm -f "$tmpdepfile"
-    exit $stat
-  fi
-  mv "$tmpdepfile" "$depfile"
-  ;;
-
-gcc)
-## There are various ways to get dependency output from gcc.  Here's
-## why we pick this rather obscure method:
-## - Don't want to use -MD because we'd like the dependencies to end
-##   up in a subdir.  Having to rename by hand is ugly.
-##   (We might end up doing this anyway to support other compilers.)
-## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
-##   -MM, not -M (despite what the docs say).
-## - Using -M directly means running the compiler twice (even worse
-##   than renaming).
-  if test -z "$gccflag"; then
-    gccflag=-MD,
-  fi
-  "$@" -Wp,"$gccflag$tmpdepfile"
-  stat=$?
-  if test $stat -eq 0; then :
-  else
-    rm -f "$tmpdepfile"
-    exit $stat
-  fi
-  rm -f "$depfile"
-  echo "$object : \\" > "$depfile"
-  alpha=ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz
-## The second -e expression handles DOS-style file names with drive letters.
-  sed -e 's/^[^:]*: / /' \
-      -e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile"
-## This next piece of magic avoids the `deleted header file' problem.
-## The problem is that when a header file which appears in a .P file
-## is deleted, the dependency causes make to die (because there is
-## typically no way to rebuild the header).  We avoid this by adding
-## dummy dependencies for each header file.  Too bad gcc doesn't do
-## this for us directly.
-  tr ' ' '
-' < "$tmpdepfile" |
-## Some versions of gcc put a space before the `:'.  On the theory
-## that the space means something, we add a space to the output as
-## well.
-## Some versions of the HPUX 10.20 sed can't process this invocation
-## correctly.  Breaking it into two sed invocations is a workaround.
-    sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
-  rm -f "$tmpdepfile"
-  ;;
-
-hp)
-  # This case exists only to let depend.m4 do its work.  It works by
-  # looking at the text of this script.  This case will never be run,
-  # since it is checked for above.
-  exit 1
-  ;;
-
-sgi)
-  if test "$libtool" = yes; then
-    "$@" "-Wp,-MDupdate,$tmpdepfile"
-  else
-    "$@" -MDupdate "$tmpdepfile"
-  fi
-  stat=$?
-  if test $stat -eq 0; then :
-  else
-    rm -f "$tmpdepfile"
-    exit $stat
-  fi
-  rm -f "$depfile"
-
-  if test -f "$tmpdepfile"; then  # yes, the sourcefile depend on other files
-    echo "$object : \\" > "$depfile"
-
-    # Clip off the initial element (the dependent).  Don't try to be
-    # clever and replace this with sed code, as IRIX sed won't handle
-    # lines with more than a fixed number of characters (4096 in
-    # IRIX 6.2 sed, 8192 in IRIX 6.5).  We also remove comment lines;
-    # the IRIX cc adds comments like `#:fec' to the end of the
-    # dependency line.
-    tr ' ' '
-' < "$tmpdepfile" \
-    | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' | \
-    tr '
-' ' ' >> $depfile
-    echo >> $depfile
-
-    # The second pass generates a dummy entry for each header file.
-    tr ' ' '
-' < "$tmpdepfile" \
-   | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
-   >> $depfile
-  else
-    # The sourcefile does not contain any dependencies, so just
-    # store a dummy comment line, to avoid errors with the Makefile
-    # "include basename.Plo" scheme.
-    echo "#dummy" > "$depfile"
-  fi
-  rm -f "$tmpdepfile"
-  ;;
-
-aix)
-  # The C for AIX Compiler uses -M and outputs the dependencies
-  # in a .u file.  In older versions, this file always lives in the
-  # current directory.  Also, the AIX compiler puts `$object:' at the
-  # start of each line; $object doesn't have directory information.
-  # Version 6 uses the directory in both cases.
-  stripped=`echo "$object" | sed 's/\(.*\)\..*$/\1/'`
-  tmpdepfile="$stripped.u"
-  if test "$libtool" = yes; then
-    "$@" -Wc,-M
-  else
-    "$@" -M
-  fi
-  stat=$?
-
-  if test -f "$tmpdepfile"; then :
-  else
-    stripped=`echo "$stripped" | sed 's,^.*/,,'`
-    tmpdepfile="$stripped.u"
-  fi
-
-  if test $stat -eq 0; then :
-  else
-    rm -f "$tmpdepfile"
-    exit $stat
-  fi
-
-  if test -f "$tmpdepfile"; then
-    outname="$stripped.o"
-    # Each line is of the form `foo.o: dependent.h'.
-    # Do two passes, one to just change these to
-    # `$object: dependent.h' and one to simply `dependent.h:'.
-    sed -e "s,^$outname:,$object :," < "$tmpdepfile" > "$depfile"
-    sed -e "s,^$outname: \(.*\)$,\1:," < "$tmpdepfile" >> "$depfile"
-  else
-    # The sourcefile does not contain any dependencies, so just
-    # store a dummy comment line, to avoid errors with the Makefile
-    # "include basename.Plo" scheme.
-    echo "#dummy" > "$depfile"
-  fi
-  rm -f "$tmpdepfile"
-  ;;
-
-icc)
-  # Intel's C compiler understands `-MD -MF file'.  However on
-  #    icc -MD -MF foo.d -c -o sub/foo.o sub/foo.c
-  # ICC 7.0 will fill foo.d with something like
-  #    foo.o: sub/foo.c
-  #    foo.o: sub/foo.h
-  # which is wrong.  We want:
-  #    sub/foo.o: sub/foo.c
-  #    sub/foo.o: sub/foo.h
-  #    sub/foo.c:
-  #    sub/foo.h:
-  # ICC 7.1 will output
-  #    foo.o: sub/foo.c sub/foo.h
-  # and will wrap long lines using \ :
-  #    foo.o: sub/foo.c ... \
-  #     sub/foo.h ... \
-  #     ...
-
-  "$@" -MD -MF "$tmpdepfile"
-  stat=$?
-  if test $stat -eq 0; then :
-  else
-    rm -f "$tmpdepfile"
-    exit $stat
-  fi
-  rm -f "$depfile"
-  # Each line is of the form `foo.o: dependent.h',
-  # or `foo.o: dep1.h dep2.h \', or ` dep3.h dep4.h \'.
-  # Do two passes, one to just change these to
-  # `$object: dependent.h' and one to simply `dependent.h:'.
-  sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile"
-  # Some versions of the HPUX 10.20 sed can't process this invocation
-  # correctly.  Breaking it into two sed invocations is a workaround.
-  sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" |
-    sed -e 's/$/ :/' >> "$depfile"
-  rm -f "$tmpdepfile"
-  ;;
-
-tru64)
-   # The Tru64 compiler uses -MD to generate dependencies as a side
-   # effect.  `cc -MD -o foo.o ...' puts the dependencies into `foo.o.d'.
-   # At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put
-   # dependencies in `foo.d' instead, so we check for that too.
-   # Subdirectories are respected.
-   dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
-   test "x$dir" = "x$object" && dir=
-   base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
-
-   if test "$libtool" = yes; then
-      # With Tru64 cc, shared objects can also be used to make a
-      # static library.  This mecanism is used in libtool 1.4 series to
-      # handle both shared and static libraries in a single compilation.
-      # With libtool 1.4, dependencies were output in $dir.libs/$base.lo.d.
-      #
-      # With libtool 1.5 this exception was removed, and libtool now
-      # generates 2 separate objects for the 2 libraries.  These two
-      # compilations output dependencies in in $dir.libs/$base.o.d and
-      # in $dir$base.o.d.  We have to check for both files, because
-      # one of the two compilations can be disabled.  We should prefer
-      # $dir$base.o.d over $dir.libs/$base.o.d because the latter is
-      # automatically cleaned when .libs/ is deleted, while ignoring
-      # the former would cause a distcleancheck panic.
-      tmpdepfile1=$dir.libs/$base.lo.d   # libtool 1.4
-      tmpdepfile2=$dir$base.o.d          # libtool 1.5
-      tmpdepfile3=$dir.libs/$base.o.d    # libtool 1.5
-      tmpdepfile4=$dir.libs/$base.d      # Compaq CCC V6.2-504
-      "$@" -Wc,-MD
-   else
-      tmpdepfile1=$dir$base.o.d
-      tmpdepfile2=$dir$base.d
-      tmpdepfile3=$dir$base.d
-      tmpdepfile4=$dir$base.d
-      "$@" -MD
-   fi
-
-   stat=$?
-   if test $stat -eq 0; then :
-   else
-      rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
-      exit $stat
-   fi
-
-   for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
-   do
-     test -f "$tmpdepfile" && break
-   done
-   if test -f "$tmpdepfile"; then
-      sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
-      # That's a tab and a space in the [].
-      sed -e 's,^.*\.[a-z]*:[	 ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
-   else
-      echo "#dummy" > "$depfile"
-   fi
-   rm -f "$tmpdepfile"
-   ;;
-
-#nosideeffect)
-  # This comment above is used by automake to tell side-effect
-  # dependency tracking mechanisms from slower ones.
-
-dashmstdout)
-  # Important note: in order to support this mode, a compiler *must*
-  # always write the preprocessed file to stdout, regardless of -o.
-  "$@" || exit $?
-
-  # Remove the call to Libtool.
-  if test "$libtool" = yes; then
-    while test $1 != '--mode=compile'; do
-      shift
-    done
-    shift
-  fi
-
-  # Remove `-o $object'.
-  IFS=" "
-  for arg
-  do
-    case $arg in
-    -o)
-      shift
-      ;;
-    $object)
-      shift
-      ;;
-    *)
-      set fnord "$@" "$arg"
-      shift # fnord
-      shift # $arg
-      ;;
-    esac
-  done
-
-  test -z "$dashmflag" && dashmflag=-M
-  # Require at least two characters before searching for `:'
-  # in the target name.  This is to cope with DOS-style filenames:
-  # a dependency such as `c:/foo/bar' could be seen as target `c' otherwise.
-  "$@" $dashmflag |
-    sed 's:^[  ]*[^: ][^:][^:]*\:[    ]*:'"$object"'\: :' > "$tmpdepfile"
-  rm -f "$depfile"
-  cat < "$tmpdepfile" > "$depfile"
-  tr ' ' '
-' < "$tmpdepfile" | \
-## Some versions of the HPUX 10.20 sed can't process this invocation
-## correctly.  Breaking it into two sed invocations is a workaround.
-    sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
-  rm -f "$tmpdepfile"
-  ;;
-
-dashXmstdout)
-  # This case only exists to satisfy depend.m4.  It is never actually
-  # run, as this mode is specially recognized in the preamble.
-  exit 1
-  ;;
-
-makedepend)
-  "$@" || exit $?
-  # Remove any Libtool call
-  if test "$libtool" = yes; then
-    while test $1 != '--mode=compile'; do
-      shift
-    done
-    shift
-  fi
-  # X makedepend
-  shift
-  cleared=no
-  for arg in "$@"; do
-    case $cleared in
-    no)
-      set ""; shift
-      cleared=yes ;;
-    esac
-    case "$arg" in
-    -D*|-I*)
-      set fnord "$@" "$arg"; shift ;;
-    # Strip any option that makedepend may not understand.  Remove
-    # the object too, otherwise makedepend will parse it as a source file.
-    -*|$object)
-      ;;
-    *)
-      set fnord "$@" "$arg"; shift ;;
-    esac
-  done
-  obj_suffix="`echo $object | sed 's/^.*\././'`"
-  touch "$tmpdepfile"
-  ${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
-  rm -f "$depfile"
-  cat < "$tmpdepfile" > "$depfile"
-  sed '1,2d' "$tmpdepfile" | tr ' ' '
-' | \
-## Some versions of the HPUX 10.20 sed can't process this invocation
-## correctly.  Breaking it into two sed invocations is a workaround.
-    sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
-  rm -f "$tmpdepfile" "$tmpdepfile".bak
-  ;;
-
-cpp)
-  # Important note: in order to support this mode, a compiler *must*
-  # always write the preprocessed file to stdout.
-  "$@" || exit $?
-
-  # Remove the call to Libtool.
-  if test "$libtool" = yes; then
-    while test $1 != '--mode=compile'; do
-      shift
-    done
-    shift
-  fi
-
-  # Remove `-o $object'.
-  IFS=" "
-  for arg
-  do
-    case $arg in
-    -o)
-      shift
-      ;;
-    $object)
-      shift
-      ;;
-    *)
-      set fnord "$@" "$arg"
-      shift # fnord
-      shift # $arg
-      ;;
-    esac
-  done
-
-  "$@" -E |
-    sed -n -e '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
-       -e '/^#line [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' |
-    sed '$ s: \\$::' > "$tmpdepfile"
-  rm -f "$depfile"
-  echo "$object : \\" > "$depfile"
-  cat < "$tmpdepfile" >> "$depfile"
-  sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
-  rm -f "$tmpdepfile"
-  ;;
-
-msvisualcpp)
-  # Important note: in order to support this mode, a compiler *must*
-  # always write the preprocessed file to stdout, regardless of -o,
-  # because we must use -o when running libtool.
-  "$@" || exit $?
-  IFS=" "
-  for arg
-  do
-    case "$arg" in
-    "-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
-	set fnord "$@"
-	shift
-	shift
-	;;
-    *)
-	set fnord "$@" "$arg"
-	shift
-	shift
-	;;
-    esac
-  done
-  "$@" -E |
-  sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::echo "`cygpath -u \\"\1\\"`":p' | sort | uniq > "$tmpdepfile"
-  rm -f "$depfile"
-  echo "$object : \\" > "$depfile"
-  . "$tmpdepfile" | sed 's% %\\ %g' | sed -n '/^\(.*\)$/ s::	\1 \\:p' >> "$depfile"
-  echo "	" >> "$depfile"
-  . "$tmpdepfile" | sed 's% %\\ %g' | sed -n '/^\(.*\)$/ s::\1\::p' >> "$depfile"
-  rm -f "$tmpdepfile"
-  ;;
-
-none)
-  exec "$@"
-  ;;
-
-*)
-  echo "Unknown depmode $depmode" 1>&2
-  exit 1
-  ;;
-esac
-
-exit 0
-
-# Local Variables:
-# mode: shell-script
-# sh-indentation: 2
-# eval: (add-hook 'write-file-hooks 'time-stamp)
-# time-stamp-start: "scriptversion="
-# time-stamp-format: "%:y-%02m-%02d.%02H"
-# time-stamp-end: "$"
-# End:
diff --git a/graphics/epix/deriv.h b/graphics/epix/deriv.h
deleted file mode 100644
index 56214ef462..0000000000
--- a/graphics/epix/deriv.h
+++ /dev/null
@@ -1,49 +0,0 @@
-/*
- * deriv.h  -- ePiX derivative function template
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.0.23
- * Last Change: January 06, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#ifndef EPIX_DERIV
-#define EPIX_DERIV
-
-#include "constants.h"
-
-namespace ePiX {
-
-  // moved from functions.h to hide global constant EPIX_EPSILON
-  template<class T> T deriv(T f(double), double t, double dt=EPIX_EPSILON)
-  {
-    return (1.0/dt)*(f(t+0.5*dt) - f(t-0.5*dt));
-  }
-} // end of namespace
-
-#endif /* EPIX_DERIV */
diff --git a/graphics/epix/doc/Makefile.am b/graphics/epix/doc/Makefile.am
deleted file mode 100644
index ec9ac95e5f..0000000000
--- a/graphics/epix/doc/Makefile.am
+++ /dev/null
@@ -1,45 +0,0 @@
-# Makefile.am for ePiX v1.x "doc" directory
-#
-
-EPIXFLAGS = --no-defaults -I.. -L.. -lepix -v
-
-%.eepic: %.xp
-	../epix-local $(EPIXFLAGS) $<
-
-XPS := $(wildcard *.xp)
-
-EEPICS = $(XPS:.xp=.eepic)
-
-CLEANFILES = *~ *.aux *.dvi *.log *.out *.idx *.ilg *.ind *.toc \
-	  epix.info.bz2 manual_src.tar manual.pdf manual.ps \
-	  manual_src.tar.gz manual.pdf.gz manual.ps.gz manual-stamp
-
-MAINTAINERCLEANFILES = *.eepic *.aux *.dvi *.log *.out *.toc *.idx *.ind *.ilg
-
-## Targets ##
-doc_DATA = manual.pdf.gz manual.ps.gz manual_src.tar.gz epix.info.bz2
-
-
-# tar up tex, xp, and eepic files; build ps, pdf
-manual-stamp: manual.tex $(XPS) $(EEPICS)
-	latex -interaction=batchmode manual &>/dev/null
-	latex -interaction=batchmode manual &>/dev/null
-	makeindex manual.idx &>/dev/null
-	../laps-local --pdf manual.tex
-	touch manual-stamp
-
-manual_src.tar.gz: manual-stamp
-	tar -cf manual_src.tar manual.aux manual.ind manual.tex manual.toc \
-	   $(XPS) $(EEPICS)
-	gzip -9 manual_src.tar
-
-#PS
-manual.ps.gz: manual-stamp
-	gzip -9 -c manual.ps > manual.ps.gz
-
-#PDF
-manual.pdf.gz: manual-stamp
-	gzip -9 -c manual.pdf > manual.pdf.gz
-
-epix.info.bz2: manual-stamp epix.info
-	bzip2 -fk epix.info
diff --git a/graphics/epix/doc/Makefile.in b/graphics/epix/doc/Makefile.in
deleted file mode 100644
index 293c547251..0000000000
--- a/graphics/epix/doc/Makefile.in
+++ /dev/null
@@ -1,364 +0,0 @@
-# Makefile.in generated by automake 1.9.6 from Makefile.am.
-# @configure_input@
-
-# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
-# 2003, 2004, 2005  Free Software Foundation, Inc.
-# This Makefile.in is free software; the Free Software Foundation
-# gives unlimited permission to copy and/or distribute it,
-# with or without modifications, as long as this notice is preserved.
-
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
-# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
-# PARTICULAR PURPOSE.
-
-@SET_MAKE@
-
-# Makefile.am for ePiX v1.x "doc" directory
-#
-
-srcdir = @srcdir@
-top_srcdir = @top_srcdir@
-VPATH = @srcdir@
-pkgdatadir = $(datadir)/@PACKAGE@
-pkglibdir = $(libdir)/@PACKAGE@
-pkgincludedir = $(includedir)/@PACKAGE@
-top_builddir = ..
-am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd
-INSTALL = @INSTALL@
-install_sh_DATA = $(install_sh) -c -m 644
-install_sh_PROGRAM = $(install_sh) -c
-install_sh_SCRIPT = $(install_sh) -c
-INSTALL_HEADER = $(INSTALL_DATA)
-transform = $(program_transform_name)
-NORMAL_INSTALL = :
-PRE_INSTALL = :
-POST_INSTALL = :
-NORMAL_UNINSTALL = :
-PRE_UNINSTALL = :
-POST_UNINSTALL = :
-subdir = doc
-DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in
-ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
-am__aclocal_m4_deps = $(top_srcdir)/configure.ac
-am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
-	$(ACLOCAL_M4)
-mkinstalldirs = $(SHELL) $(top_srcdir)/mkinstalldirs
-CONFIG_CLEAN_FILES =
-SOURCES =
-DIST_SOURCES =
-am__vpath_adj_setup = srcdirstrip=`echo "$(srcdir)" | sed 's|.|.|g'`;
-am__vpath_adj = case $$p in \
-    $(srcdir)/*) f=`echo "$$p" | sed "s|^$$srcdirstrip/||"`;; \
-    *) f=$$p;; \
-  esac;
-am__strip_dir = `echo $$p | sed -e 's|^.*/||'`;
-am__installdirs = "$(DESTDIR)$(docdir)"
-docDATA_INSTALL = $(INSTALL_DATA)
-DATA = $(doc_DATA)
-DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
-ACLOCAL = @ACLOCAL@
-AMDEP_FALSE = @AMDEP_FALSE@
-AMDEP_TRUE = @AMDEP_TRUE@
-AMTAR = @AMTAR@
-AUTOCONF = @AUTOCONF@
-AUTOHEADER = @AUTOHEADER@
-AUTOMAKE = @AUTOMAKE@
-AWK = @AWK@
-BASH_PATH = @BASH_PATH@
-CC = @CC@
-CCDEPMODE = @CCDEPMODE@
-CFLAGS = @CFLAGS@
-CPP = @CPP@
-CPPFLAGS = @CPPFLAGS@
-CXX = @CXX@
-CXXDEPMODE = @CXXDEPMODE@
-CXXFLAGS = @CXXFLAGS@
-CYGPATH_W = @CYGPATH_W@
-DEFS = @DEFS@
-DEPDIR = @DEPDIR@
-ECHO_C = @ECHO_C@
-ECHO_N = @ECHO_N@
-ECHO_T = @ECHO_T@
-EGREP = @EGREP@
-ENABLE_EPIX_EL_FALSE = @ENABLE_EPIX_EL_FALSE@
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-EPIXFLAGS = --no-defaults -I.. -L.. -lepix -v
-XPS := $(wildcard *.xp)
-EEPICS = $(XPS:.xp=.eepic)
-CLEANFILES = *~ *.aux *.dvi *.log *.out *.idx *.ilg *.ind *.toc \
-	  epix.info.bz2 manual_src.tar manual.pdf manual.ps \
-	  manual_src.tar.gz manual.pdf.gz manual.ps.gz manual-stamp
-
-MAINTAINERCLEANFILES = *.eepic *.aux *.dvi *.log *.out *.toc *.idx *.ind *.ilg
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-all: all-am
-
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-	    *$$dep*) \
-	      cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh \
-		&& exit 0; \
-	      exit 1;; \
-	  esac; \
-	done; \
-	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu  doc/Makefile'; \
-	cd $(top_srcdir) && \
-	  $(AUTOMAKE) --gnu  doc/Makefile
-.PRECIOUS: Makefile
-Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
-	@case '$?' in \
-	  *config.status*) \
-	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
-	  *) \
-	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
-	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \
-	esac;
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-	  echo " $(docDATA_INSTALL) '$$d$$p' '$(DESTDIR)$(docdir)/$$f'"; \
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-	@list='$(doc_DATA)'; for p in $$list; do \
-	  f=$(am__strip_dir) \
-	  echo " rm -f '$(DESTDIR)$(docdir)/$$f'"; \
-	  rm -f "$(DESTDIR)$(docdir)/$$f"; \
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-	list='$(DISTFILES)'; for file in $$list; do \
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-	    cp -pR $$d/$$file $(distdir)$$dir || exit 1; \
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-	    || exit 1; \
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-	    echo "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'"` install
-mostlyclean-generic:
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-clean-generic:
-	-test -z "$(CLEANFILES)" || rm -f $(CLEANFILES)
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-	../epix-local $(EPIXFLAGS) $<
-
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-manual-stamp: manual.tex $(XPS) $(EEPICS)
-	latex -interaction=batchmode manual &>/dev/null
-	latex -interaction=batchmode manual &>/dev/null
-	makeindex manual.idx &>/dev/null
-	../laps-local --pdf manual.tex
-	touch manual-stamp
-
-manual_src.tar.gz: manual-stamp
-	tar -cf manual_src.tar manual.aux manual.ind manual.tex manual.toc \
-	   $(XPS) $(EEPICS)
-	gzip -9 manual_src.tar
-
-#PS
-manual.ps.gz: manual-stamp
-	gzip -9 -c manual.ps > manual.ps.gz
-
-#PDF
-manual.pdf.gz: manual-stamp
-	gzip -9 -c manual.pdf > manual.pdf.gz
-
-epix.info.bz2: manual-stamp epix.info
-	bzip2 -fk epix.info
-# Tell versions [3.59,3.63) of GNU make to not export all variables.
-# Otherwise a system limit (for SysV at least) may be exceeded.
-.NOEXPORT:
diff --git a/graphics/epix/doc/alignment.eepic b/graphics/epix/doc/alignment.eepic
deleted file mode 100644
index 1c5d93bd48..0000000000
--- a/graphics/epix/doc/alignment.eepic
+++ /dev/null
@@ -1,19 +0,0 @@
-%% Generated from alignment.xp on Fri Jan  7 14:18:43 EST 2005 by
-%% ePiX-1.0.3
-%%
-%%   Cartesian bounding box: [-1,1] x [-1,1]
-%%   Actual size: 72pt x 24pt
-%%   Figure offset: right by 0pt, up by 0pt
-%%
-\setlength{\unitlength}{1pt}
-\begin{picture}(72,24)(-0,-0)
-%% ---
-\path(0.00140226,12)(12.001,12)(24.0006,12)(36.0002,12)(47.9998,12)
-  (59.9994,12)(71.999,12)
-\path(36,0.00046742)(36,12.0001)(36,23.9997)
-\put(36,12){\makebox(0,0)[bl]{\texttt{[tr]}}}
-\put(36,12){\makebox(0,0)[c]{{\circle*{3}}}}
-\put(36,12){\makebox(0,0)[br]{\texttt{[tl]}}}
-\put(36,12){\makebox(0,0)[tl]{\texttt{[br]}}}
-\put(36,12){\makebox(0,0)[tr]{\texttt{[bl]}}}
-\end{picture}
diff --git a/graphics/epix/doc/alignment.xp b/graphics/epix/doc/alignment.xp
deleted file mode 100644
index e6bfc3c298..0000000000
--- a/graphics/epix/doc/alignment.xp
+++ /dev/null
@@ -1,26 +0,0 @@
-/* -*-ePiX-*- */
-/* alignment.c -- ePiX's reverse-LaTeX label alignment option */
-#include "epix.h"
-using namespace ePiX;
-
-P O(0,0);
-
-int main()
-{
-  bounding_box(P(-1,-1), P(1,1));
-  picture(P(72,24));
-  unitlength("1pt");
-
-  begin();
-
-  Line(O, E_1);
-  Line(O, E_2);
-
-  font_face("tt");
-  dot(O, P(0,0), "[tr]", tr); 
-  label(O, P(0,0), "[tl]", tl);
-  label(O, P(0,0), "[br]", br);
-  label(O, P(0,0), "[bl]", bl);
-
-  end();
-}
diff --git a/graphics/epix/doc/alignment_lr.eepic b/graphics/epix/doc/alignment_lr.eepic
deleted file mode 100644
index 111098caf3..0000000000
--- a/graphics/epix/doc/alignment_lr.eepic
+++ /dev/null
@@ -1,17 +0,0 @@
-%% Generated from alignment_lr.xp on Fri Jan  7 14:18:31 EST 2005 by
-%% ePiX-1.0.3
-%%
-%%   Cartesian bounding box: [-1,1] x [-1,1]
-%%   Actual size: 72pt x 24pt
-%%   Figure offset: right by 0pt, up by 0pt
-%%
-\setlength{\unitlength}{1pt}
-\begin{picture}(72,24)(-0,-0)
-%% ---
-\put(0,12){\makebox(0,0)[r]{\texttt{[l]}}}
-\put(0,12){\makebox(0,0)[c]{{\circle*{3}}}}
-\put(0,12){\makebox(0,0)[l]{\texttt{[r]}}}
-\put(72,12){\makebox(0,0)[b]{\texttt{[t]}}}
-\put(72,12){\makebox(0,0)[c]{{\circle*{3}}}}
-\put(72,12){\makebox(0,0)[t]{\texttt{[b]}}}
-\end{picture}
diff --git a/graphics/epix/doc/alignment_lr.xp b/graphics/epix/doc/alignment_lr.xp
deleted file mode 100644
index a6871278e3..0000000000
--- a/graphics/epix/doc/alignment_lr.xp
+++ /dev/null
@@ -1,24 +0,0 @@
-/* -*-ePiX-*- */
-/* alignment_lr.c -- ePiX's reverse-LaTeX label alignment option */
-#include "epix.h"
-using namespace ePiX;
-
-P p1(-1,0), p2(1,0);
-
-int main()
-{
-  bounding_box(P(-1,-1), P(1,1));
-  picture(P(72,24));
-  unitlength("1pt");
-
-  begin();
-
-  font_face("tt");
-  dot(p1, P(0,0), "[l]", l); 
-  label(p1, P(0,0), "[r]", r); 
-
-  dot(p2, P(0,0), "[t]", t); 
-  label(p2, P(0,0), "[b]", b); 
-
-  end();
-}
diff --git a/graphics/epix/doc/arrow.eepic b/graphics/epix/doc/arrow.eepic
deleted file mode 100644
index 98adf21b49..0000000000
--- a/graphics/epix/doc/arrow.eepic
+++ /dev/null
@@ -1,22 +0,0 @@
-%% Generated from arrows.xp on Mon Jul  2 20:38:11 EDT 2007 by
-%% ePiX-1.1.6
-%%
-%%   Cartesian bounding box: [-2,2] x [-1,1]
-%%   Actual size: 24 x 12pt
-%%   Figure offset: left by 0pt, down by 0pt
-%%
-\xdefinecolor{rgb_000000}{rgb}{0,0,0}
-\setlength{\unitlength}{1pt}
-\begin{picture}(24,12)(-0,-0)
-\path(0,6)(24,6)
-%%
-\path(17.8125,4.875)(15.75,4.875)
-\path(19.875,5.25)(15.75,5.25)
-\path(21.9375,5.625)(15.75,5.625)
-\path(24,6)(15.75,6)
-\path(21.9375,6.375)(15.75,6.375)
-\path(19.875,6.75)(15.75,6.75)
-\path(17.8125,7.125)(15.75,7.125)
-\path(15.75,6)(15.75,4.5)(24,6)(15.75,7.5)(15.75,6)
-%%
-\end{picture}
diff --git a/graphics/epix/doc/arrow.xp b/graphics/epix/doc/arrow.xp
deleted file mode 100644
index 34c47ad5e0..0000000000
--- a/graphics/epix/doc/arrow.xp
+++ /dev/null
@@ -1,18 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-int main() 
-{
-  picture(P(-2,-1),P(2,1), "24x12pt");
-
-  begin();
-#ifdef CAMBER25
-  arrow_camber(0.25);
-#elif CAMBER50
-  arrow_camber(0.5);
-#endif
-
-  arrow(P(xmin(),0), P(xmax(),0));
-  end();
-}
diff --git a/graphics/epix/doc/arrow25.eepic b/graphics/epix/doc/arrow25.eepic
deleted file mode 100644
index 196889e2b2..0000000000
--- a/graphics/epix/doc/arrow25.eepic
+++ /dev/null
@@ -1,22 +0,0 @@
-%% Generated from arrows.xp on Mon Jul  2 20:38:23 EDT 2007 by
-%% ePiX-1.1.6
-%%
-%%   Cartesian bounding box: [-2,2] x [-1,1]
-%%   Actual size: 24 x 12pt
-%%   Figure offset: left by 0pt, down by 0pt
-%%
-\xdefinecolor{rgb_000000}{rgb}{0,0,0}
-\setlength{\unitlength}{1pt}
-\begin{picture}(24,12)(-0,-0)
-\path(0,6)(24,6)
-%%
-\path(17.8125,4.875)(16.2656,4.875)
-\path(19.875,5.25)(16.7813,5.25)
-\path(21.9375,5.625)(17.2969,5.625)
-\path(24,6)(17.8125,6)
-\path(21.9375,6.375)(17.2969,6.375)
-\path(19.875,6.75)(16.7813,6.75)
-\path(17.8125,7.125)(16.2656,7.125)
-\path(17.8125,6)(15.75,4.5)(24,6)(15.75,7.5)(17.8125,6)
-%%
-\end{picture}
diff --git a/graphics/epix/doc/arrow50.eepic b/graphics/epix/doc/arrow50.eepic
deleted file mode 100644
index e22fec0fd0..0000000000
--- a/graphics/epix/doc/arrow50.eepic
+++ /dev/null
@@ -1,22 +0,0 @@
-%% Generated from arrows.xp on Mon Jul  2 20:38:34 EDT 2007 by
-%% ePiX-1.1.6
-%%
-%%   Cartesian bounding box: [-2,2] x [-1,1]
-%%   Actual size: 24 x 12pt
-%%   Figure offset: left by 0pt, down by 0pt
-%%
-\xdefinecolor{rgb_000000}{rgb}{0,0,0}
-\setlength{\unitlength}{1pt}
-\begin{picture}(24,12)(-0,-0)
-\path(0,6)(24,6)
-%%
-\path(17.8125,4.875)(16.7813,4.875)
-\path(19.875,5.25)(17.8125,5.25)
-\path(21.9375,5.625)(18.8438,5.625)
-\path(24,6)(19.875,6)
-\path(21.9375,6.375)(18.8438,6.375)
-\path(19.875,6.75)(17.8125,6.75)
-\path(17.8125,7.125)(16.7813,7.125)
-\path(19.875,6)(15.75,4.5)(24,6)(15.75,7.5)(19.875,6)
-%%
-\end{picture}
diff --git a/graphics/epix/doc/basepoint.eepic b/graphics/epix/doc/basepoint.eepic
deleted file mode 100644
index efd76dfaa5..0000000000
--- a/graphics/epix/doc/basepoint.eepic
+++ /dev/null
@@ -1,16 +0,0 @@
-%% Generated from basepoint.xp on Tue Jan  4 15:32:04 EST 2005 by
-%% ePiX-1.0.3
-%%
-%%   Cartesian bounding box: [0,3.75] x [0,1]
-%%   Actual size: 3.75pc x 1pc
-%%   Figure offset: right by 0pc, up by 0pc
-%%
-\setlength{\unitlength}{1pc}
-\begin{picture}(3.75,1)(-0,-0)
-%% ---
-\path(0,-0.375)(3.75,-0.375)(3.75,1)(0,1)(0,-0.375)
-\allinethickness{0.15pt}%
-\path(0,0)(3.75,0)
-\put(0,0){$y=f(x)$}
-\put(0,0){\makebox(0,0)[c]{{\circle*{0.111111}}}}
-\end{picture}
diff --git a/graphics/epix/doc/basepoint.xp b/graphics/epix/doc/basepoint.xp
deleted file mode 100644
index 7fc15f6cb1..0000000000
--- a/graphics/epix/doc/basepoint.xp
+++ /dev/null
@@ -1,36 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-int main() {
-  bounding_box(P(0,0),P(3.75,1));
-  unitlength("1pc");
-  picture(3.75,1);
-  //  offset(-0.5,0);
-
-  begin();
-
-  rect(P(x_min, y_min-0.375), P(x_max, y_max));
-
-  pen(0.15);
-  line(P(x_min,0), P(x_max,0));
-
-  dot_size(2);
-
-  //  std::cout << "\n\\LARGE";
-  /*
-  label(P(0,0), P(0,0), "$b$");
-  ddot(P(0,0));
-
-  label(P(1,0), P(0,0), "$f$");
-  ddot(P(1,0));
-
-  label(P(2,0), P(0,0), "$p$");
-  ddot(P(2,0));
-  */
-
-  label(P(0,0), P(0,0), "$y=f(x)$");
-  ddot(P(0,0));
-
-  end();
-}
diff --git a/graphics/epix/doc/camera.eepic b/graphics/epix/doc/camera.eepic
deleted file mode 100644
index 7da56f9987..0000000000
--- a/graphics/epix/doc/camera.eepic
+++ /dev/null
@@ -1,285 +0,0 @@
-%% Generated from camera.xp on Sat Sep 22 17:10:34 EDT 2007 by
-%% ePiX-1.2.0
-%% 
-%%   Cartesian bounding box: [-3.5,3.5] x [-3.5,2.5]
-%%   Actual size: 2.625 x 2.25in
-%%   Figure offset: left by 0in, down by 0in
-%% 
-%% usepackages epic,eepic,xcolor
-%% 
-\xdefinecolor{rgb_000000}{rgb}{0,0,0}%
-\xdefinecolor{rgb_7f7f7f}{rgb}{0.498039,0.498039,0.498039}%
-\xdefinecolor{rgb_e5e5e5}{rgb}{0.898039,0.898039,0.898039}%
-\xdefinecolor{rgb_ffffff}{rgb}{1,1,1}%
-\setlength{\unitlength}{1in}%
-\begin{picture}(2.625,2.25)(0,0)%
-\path(1.42243,1.30711)(1.4086,1.26997)(1.29561,1.27568)
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diff --git a/graphics/epix/doc/camera.xp b/graphics/epix/doc/camera.xp
deleted file mode 100644
index 66f8fdb334..0000000000
--- a/graphics/epix/doc/camera.xp
+++ /dev/null
@@ -1,86 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-const double ht(4);
-
-const P target(0,0,0);
-const P observer(0,-4,0);
-const P dtarg(-0.5,0,1);
-const double dx(0.375);
-
-// location of label
-const P obj_loc(1,0,0.25);
-
-P F(P arg)
-{
-  double x(arg.x2());
-  return (ht/(ht+x))*P(arg.x1(), 0, arg.x3());
-}
-
-P P1(0.75, -1,    -0.25);
-P P2(1,    -1.25, -0.75);
-P P3(0.5,  -1.5,  -0.5 );
-P midpt((1.0/3)*(P1+P2+P3));
-
-int main() {
-  bounding_box(P(-3.5,-3.5),P(3.5,2.5));
-  unitlength("0.375in");
-  picture(P(7,6));
-
-  begin();
-
-  camera.at(P(1.5,-10,3.5));
-  camera.range(10);
-
-  font_size("footnotesize");
-  right_angle(target, E_1, -E_2);
-
-  line(target, target+2*dx*E_1);
-  line(target, target+2*dx*E_3);
-
-  //  grid(P(-3,0,-2), P(3,0,2), 6, 8);
-  grid(P(-3,0,-2), P(3,0,2));
-
-  masklabel(observer+E_1, P(2,0), "\\textbf{Sea}", r);
-  masklabel(observer+E_3, P(0,2), "\\textbf{Sky}", t);
-  masklabel(observer-E_2, P(-4,0), "\\textbf{Eye}", l);
-
-  masklabel(observer, P(-2,0), "Viewpoint", l);
-  dot(observer);
-
-  masklabel(P(3,0,2), P(-6,-2), "Canvas", bl);
-
-  line(observer, target);
-
-  fill(Black(0.5));
-  triangle(F(P1), F(P2), F(P3));
-
-  line(P1, F(P1));
-  line(P2, F(P2));
-  line(P3, F(P3));
-
-  line(observer, F(P1));
-  line(observer, F(P2));
-  line(observer, F(P3));
-
-  fill(Black(0.1));
-  triangle(P1, P2, P3);
-
-  line(obj_loc, midpt);
-  masklabel(obj_loc, P(0,0), "Object", t);
-
-  line(P(2,0,-1), F(midpt));
-  masklabel(P(2,0,-1), P(0,0), "Shadow", r);
-
-  masklabel(target+dtarg, P(0,0), "Target", t);
-  arrow(target+dtarg, target+0.1*dtarg, 0.5);
-  dot(target);
-
-  bold();
-  arrow(observer, observer+E_1, 0.5);
-  arrow(observer, observer-E_2, 0.5);
-  arrow(observer, observer+E_3, 0.5);
-
-  end();
-}
diff --git a/graphics/epix/doc/cb.eepic b/graphics/epix/doc/cb.eepic
deleted file mode 100644
index 7df0354645..0000000000
--- a/graphics/epix/doc/cb.eepic
+++ /dev/null
@@ -1,25 +0,0 @@
-%% Generated from cb.xp on Tue Jan  4 15:32:10 EST 2005 by
-%% ePiX-1.0.3
-%%
-%%   Cartesian bounding box: [-2,2] x [-1,1]
-%%   Actual size: 1.5in x 0.75in
-%%   Figure offset: right by 0in, up by 0in
-%%
-\setlength{\unitlength}{1in}
-\begin{picture}(1.5,0.75)(-0,-0)
-%% ---
-\path(0,0.375)(1.5,0.375)
-\put(0,0.375){\makebox(0,0)[c]{\rule{0.5pt}{4pt}}}
-\put(0.375,0.375){\makebox(0,0)[c]{\rule{0.5pt}{4pt}}}
-\put(0.75,0.375){\makebox(0,0)[c]{\rule{0.5pt}{4pt}}}
-\put(1.125,0.375){\makebox(0,0)[c]{\rule{0.5pt}{4pt}}}
-\put(1.5,0.375){\makebox(0,0)[c]{\rule{0.5pt}{4pt}}}
-%% ---
-\path(0.75,0)(0.75,0.75)
-\put(0.75,0){\makebox(0,0)[c]{\rule{4pt}{0.5pt}}}
-\put(0.75,0.75){\makebox(0,0)[c]{\rule{4pt}{0.5pt}}}
-%% ---
-\thicklines
-\path(0,0.375)(0.375,0.75)(0.75,0.375)(1.125,0.75)(1.5,0.375)
-\put(0.75,-0.055348){\makebox(0,0)[t]{\code{cb}}}
-\end{picture}
diff --git a/graphics/epix/doc/cb.xp b/graphics/epix/doc/cb.xp
deleted file mode 100644
index e0434b483e..0000000000
--- a/graphics/epix/doc/cb.xp
+++ /dev/null
@@ -1,22 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-int main() 
-{
-  bounding_box(P(-2,-1),P(2,1));
-  unitlength("1in");
-  picture(1.5,0.75);
-
-  begin();
-
-  h_axis(4);
-  v_axis(1);
-
-  bold();
-  plot(cb, x_min, x_max, 4);
-
-  label(P(0,y_min), P(0,-4), "\\code{cb}", b);
-
-  end();
-}
diff --git a/graphics/epix/doc/color_density.eepic b/graphics/epix/doc/color_density.eepic
deleted file mode 100644
index 1b0ee79028..0000000000
--- a/graphics/epix/doc/color_density.eepic
+++ /dev/null
@@ -1,139 +0,0 @@
-%% Generated from color_density.xp on Thu Jul  5 10:01:14 EDT 2007 by
-%% ePiX-1.1.6
-%%
-%%   Cartesian bounding box: [-2,2] x [0,1.375]
-%%   Actual size: 4 x 1.5in
-%%   Figure offset: left by 0in, down by 0in
-%%
-\newrgbcolor{rgb_000000}{0 0 0}
-\newrgbcolor{rgb_005454}{0 0.329412 0.329412}
-\newrgbcolor{rgb_00a9a9}{0 0.662745 0.662745}
-\newrgbcolor{rgb_00fefe}{0 0.996078 0.996078}
-\newrgbcolor{rgb_00ffff}{0 1 1}
-\newrgbcolor{rgb_540000}{0.329412 0 0}
-\newrgbcolor{rgb_54ffff}{0.329412 1 1}
-\newrgbcolor{rgb_a90000}{0.662745 0 0}
-\newrgbcolor{rgb_a9ffff}{0.662745 1 1}
-\newrgbcolor{rgb_fe0000}{0.996078 0 0}
-\newrgbcolor{rgb_feffff}{0.996078 1 1}
-\newrgbcolor{rgb_ff0000}{1 0 0}
-\newrgbcolor{rgb_ff5454}{1 0.329412 0.329412}
-\newrgbcolor{rgb_ffa9a9}{1 0.662745 0.662745}
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-\psset{unit=1in,linewidth=0.4pt}
-\begin{pspicture}(4,1.5)(-0,-0)
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-\psline[fillstyle=solid]
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-\psline[fillstyle=solid]
-  (0.21,1.22727)(0.46,1.22727)(0.46,1.5)(0.21,1.5)(0.21,1.22727)
-%%
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-%%
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-  (0.543,1.22727)(0.793,1.22727)(0.793,1.5)(0.543,1.5)(0.543,1.22727)
-%%
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-%%
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-%%
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-\psline[fillstyle=solid]
-  (1.209,1.22727)(1.459,1.22727)(1.459,1.5)(1.209,1.5)(1.209,1.22727)
-%%
-\psline(1.209,1.22727)(1.459,1.22727)(1.459,1.5)(1.209,1.5)(1.209,1.22727)
-%%
-\psset{fillcolor=rgb_005454}%
-\psline[fillstyle=solid]
-  (1.542,1.22727)(1.792,1.22727)(1.792,1.5)(1.542,1.5)(1.542,1.22727)
-%%
-\psline(1.542,1.22727)(1.792,1.22727)(1.792,1.5)(1.542,1.5)(1.542,1.22727)
-%%
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-%%
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-%%
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-%%
-\psline(2.208,1.22727)(2.458,1.22727)(2.458,1.5)(2.208,1.5)(2.208,1.22727)
-%%
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-\psline[fillstyle=solid]
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-%%
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-%%
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-\psline[fillstyle=solid]
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-%%
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-%%
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-\psline[fillstyle=solid]
-  (3.207,1.22727)(3.457,1.22727)(3.457,1.5)(3.207,1.5)(3.207,1.22727)
-%%
-\psline(3.207,1.22727)(3.457,1.22727)(3.457,1.5)(3.207,1.5)(3.207,1.22727)
-%%
-\psset{fillcolor=rgb_ffa9a9}%
-\psline[fillstyle=solid]
-  (3.54,1.22727)(3.79,1.22727)(3.79,1.5)(3.54,1.5)(3.54,1.22727)
-%%
-\psline(3.54,1.22727)(3.79,1.22727)(3.79,1.5)(3.54,1.5)(3.54,1.22727)
-%%
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-%%
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-%%
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-%%
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-\rput(0,-0.055348){\makebox(0,0)[t]{{$-2$}}}
-\rput(1,-0.055348){\makebox(0,0)[t]{{$-1$}}}
-\rput(2,-0.055348){\makebox(0,0)[t]{{$\phantom{-}0$}}}
-\rput(3,-0.055348){\makebox(0,0)[t]{{$\phantom{-}1$}}}
-\rput(4,-0.055348){\makebox(0,0)[t]{{$\phantom{-}2$}}}
-\psset{linecolor=rgb_00ffff}%
-\psline(0,1.09091)(1,1.09091)
-%%
-\psline(1,1.09091)(2,0)
-%%
-\psline(2,0)(3,0)
-%%
-\psline(3,0)(4,1.09091)
-%%
-\psset{linewidth=0.8pt}%
-\psset{linecolor=rgb_ff0000}%
-\psline
-  (0,1.09091)(1,0)
-%%
-\psline(1,0)(2,0)
-%%
-\psline(2,0)(3,1.09091)
-%%
-\psline(3,1.09091)(4,1.09091)
-%%
-\end{pspicture}
diff --git a/graphics/epix/doc/color_density.xp b/graphics/epix/doc/color_density.xp
deleted file mode 100644
index f561fa43e3..0000000000
--- a/graphics/epix/doc/color_density.xp
+++ /dev/null
@@ -1,42 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-double dX(0.125), dY(0.25);
-
-int main()
-{
-  picture(P(-2, 0), P(2, 1.125 + dY), "4 x 1.5in");
-
-  begin();
-
-  fill();
-  for (int i=-6; i<=6; ++i)
-    {
-      const double x(0.333*i);
-      fill(Red(x));
-      rect(P(x-dX, 1.125), P(x+dX, 1.125+dY));
-    }
-  nofill();
-
-  h_axis(4);
-  v_axis(P(0,0), P(0,1), 1);
-
-  h_axis_labels(4, P(0,-4), b);
-  red(-1);
-  line(P(-2,1), P(-1,1));
-  line(P(-1,1), P(0,0));
-  line(P(0,0), P(1,0));
-  line(P(1,0), P(2,1));
-
-  red();
-  bold();
-  line(P(-2,1), P(-1,0));
-  line(P(-1,0), P(0,0));
-
-  line(P(0,0), P(1,1));
-  line(P(1,1), P(2,1));
-
-  pst_format();
-  end();
-}
diff --git a/graphics/epix/doc/dots.eepic b/graphics/epix/doc/dots.eepic
deleted file mode 100644
index 839663481d..0000000000
--- a/graphics/epix/doc/dots.eepic
+++ /dev/null
@@ -1,19 +0,0 @@
-%% Generated from dots.xp on Tue Jan  4 15:32:12 EST 2005 by
-%% ePiX-1.0.3
-%%
-%%   Cartesian bounding box: [0,8] x [0,1]
-%%   Actual size: 72pt x 12pt
-%%   Figure offset: right by 10pt, up by 2pt
-%%
-\setlength{\unitlength}{1pt}
-\begin{picture}(72,12)(-10,-2)
-%% ---
-\put(0,0){\makebox(0,0)[c]{{\circle*{4.5}}}}
-\put(9,0){\makebox(0,0)[c]{{\circle*{3}}}}
-\put(18,0){\makebox(0,0)[c]{{\circle*{2}}}}
-\put(36,0){\makebox(0,0)[c]{\rule{3pt}{3pt}}}
-\put(45,0){\makebox(0,0)[c]{\rule{2pt}{2pt}}}
-\path(58.5,0)(78.75,0)
-\put(63,0){\makebox(0,0)[c]{{\circle{4.5}}}}
-\whiten\put(72,0){\makebox(0,0)[c]{{\circle{3}}}}
-\end{picture}
diff --git a/graphics/epix/doc/dots.xp b/graphics/epix/doc/dots.xp
deleted file mode 100644
index 1f13fb6099..0000000000
--- a/graphics/epix/doc/dots.xp
+++ /dev/null
@@ -1,28 +0,0 @@
-/* -*-ePiX-*- */
-/* dots.c -- Dot primitives */
-#include "epix.h"
-using namespace ePiX;
-
-int main()
-{
-  unitlength("1pt");
-  bounding_box(P(0,0), P(8,1));
-  picture(P(72,12));
-  offset(P(10,2));
-
-  begin();
-
-  spot(P(0,0));
-  dot(P(1,0));
-  ddot(P(2,0));
-
-  box(P(4,0));
-  bbox(P(5,0));
-
-  line(P(6.5,0), P(8.75,0));
-
-  ring(P(7,0));
-  circ(P(8,0));
-
-  end();
-}
diff --git a/graphics/epix/doc/ePiX.eepic b/graphics/epix/doc/ePiX.eepic
deleted file mode 100644
index 4bdec31118..0000000000
--- a/graphics/epix/doc/ePiX.eepic
+++ /dev/null
@@ -1,1099 +0,0 @@
-%% Generated from ePiX.xp on Sat Sep 22 20:16:03 EDT 2007 by
-%% ePiX-1.2.0
-%% 
-%%   Cartesian bounding box: [-0.5,5.75] x [2,10]
-%%   Actual size: 4 x 7.5in
-%%   Figure offset: left by 0in, down by 0in
-%% 
-%% usepackages epic,eepic,xcolor
-%% 
-\xdefinecolor{cmy_000019}{cmyk}{0,0,0.0980392,0}%
-\xdefinecolor{rgb_0000ff}{rgb}{0,0,1}%
-\xdefinecolor{rgb_009800}{rgb}{0,0.596078,0}%
-\xdefinecolor{rgb_7f7f7f}{rgb}{0.498039,0.498039,0.498039}%
-\xdefinecolor{rgb_ff0000}{rgb}{1,0,0}%
-\setlength{\unitlength}{1in}%
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-\color{rgb_7f7f7f}%
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-  (2.42133,1.16549)(2.42667,1.17106)(2.432,1.17656)(2.43733,1.182)
-  (2.44267,1.18737)(2.448,1.19268)(2.45333,1.19792)(2.45867,1.20309)
-  (2.464,1.2082)(2.46933,1.21325)(2.47467,1.21823)(2.48,1.22314)
-  (2.48533,1.22799)(2.49067,1.23278)(2.496,1.2375)(2.50133,1.24215)
-  (2.50667,1.24674)(2.512,1.25127)(2.51733,1.25573)(2.52267,1.26012)
-  (2.528,1.26445)(2.53333,1.26872)(2.53867,1.27292)(2.544,1.27705)
-  (2.54933,1.28112)(2.55467,1.28512)(2.56,1.28906)(2.56533,1.29294)
-  (2.57067,1.29674)(2.576,1.30049)(2.58133,1.30417)(2.58667,1.30778)
-  (2.592,1.31133)(2.59733,1.31481)(2.60267,1.31823)(2.608,1.32158)
-  (2.61333,1.32487)(2.61867,1.32809)(2.624,1.33125)(2.62933,1.33434)
-  (2.63467,1.33737)(2.64,1.34033)(2.64533,1.34323)(2.65067,1.34606)
-  (2.656,1.34883)(2.66133,1.35153)(2.66667,1.35417)(2.672,1.35674)
-  (2.67733,1.35924)(2.68267,1.36169)(2.688,1.36406)(2.69333,1.36637)
-  (2.69867,1.36862)(2.704,1.3708)(2.70933,1.37292)(2.71467,1.37497)
-  (2.72,1.37695)(2.72533,1.37887)(2.73067,1.38073)(2.736,1.38252)
-  (2.74133,1.38424)(2.74667,1.3859)(2.752,1.3875)(2.75733,1.38903)
-  (2.76267,1.39049)(2.768,1.39189)(2.77333,1.39323)(2.77867,1.3945)
-  (2.784,1.3957)(2.78933,1.39684)(2.79467,1.39792)(2.8,1.39893)
-  (2.80533,1.39987)(2.81067,1.40075)(2.816,1.40156)(2.82133,1.40231)
-  (2.82667,1.40299)(2.832,1.40361)(2.83733,1.40417)(2.84267,1.40465)
-  (2.848,1.40508)(2.85333,1.40544)(2.85867,1.40573)(2.864,1.40596)
-  (2.86933,1.40612)(2.87467,1.40622)(2.88,1.40625)
-\allinethickness{0.0055348in}%
-\path(2.82288,1.41337)(2.82817,1.3965)
-\path(2.82772,1.41543)(2.83335,1.39747)
-\path(2.83353,1.41441)(2.83854,1.39845)
-\path(2.83934,1.41339)(2.84372,1.39942)
-\path(2.84515,1.41237)(2.8489,1.4004)
-\path(2.85096,1.41135)(2.85408,1.40137)
-\path(2.85677,1.41033)(2.85927,1.40235)
-\path(2.86257,1.40931)(2.86445,1.40332)
-\path(2.86838,1.40829)(2.86963,1.4043)
-\path(2.87419,1.40727)(2.87482,1.40527)
-\path(2.83547,1.39787)(2.86857,1.40826)
-\path(2.82296,1.39954)(2.85714,1.41026)
-\path(2.82293,1.40512)(2.84572,1.41227)
-\path(2.82289,1.4107)(2.83429,1.41427)
-\allinethickness{1.2pt}%
-\path(2.82292,1.4059)(2.82299,1.39552)(2.88,1.40625)
-  (2.82286,1.41628)(2.82292,1.4059)
-\put(2.86001,1.46481){\makebox(0,0)[b]{\fboxrule0.1pt%
-\fcolorbox{rgb_ff0000}{cmy_000019}{\hbox{\color{rgb_0000ff}\texttt{\footnotesize \texttt{eps}}}}}}
-\put(2.88,1.40625){\color{rgb_0000ff}$\allinethickness{0.0207555in}\circle{0.0207555}$}%
-\path(2.88,1.40625)(3.52,1.40625)
-\allinethickness{0.0055348in}%
-\path(3.50867,1.40419)(3.51287,1.40755)
-\path(3.49734,1.40213)(3.50573,1.40884)
-\path(3.48601,1.40007)(3.4986,1.41014)
-\path(3.47467,1.39801)(3.49146,1.41144)
-\path(3.46334,1.39595)(3.48433,1.41274)
-\path(3.46292,1.40262)(3.47719,1.41403)
-\path(3.46292,1.40962)(3.47006,1.41533)
-\path(3.51429,1.40521)(3.51235,1.40764)
-\path(3.50858,1.40417)(3.5047,1.40903)
-\path(3.50288,1.40314)(3.49705,1.41042)
-\path(3.49717,1.4021)(3.4894,1.41181)
-\path(3.49146,1.40106)(3.48175,1.41321)
-\path(3.48575,1.40002)(3.47409,1.4146)
-\path(3.48005,1.39899)(3.46644,1.41599)
-\path(3.47434,1.39795)(3.46292,1.41222)
-\path(3.46863,1.39691)(3.46292,1.40404)
-\allinethickness{1.2pt}%
-\path(3.46292,1.40625)(3.46292,1.39587)(3.52,1.40625)
-  (3.46292,1.41663)(3.46292,1.40625)
-\put(3.57535,1.40625){\makebox(0,0)[l]{\fboxrule0.1pt%
-\fcolorbox{rgb_ff0000}{cmy_000019}{\hbox{\color{rgb_0000ff}\texttt{\footnotesize \begin{minipage}{0.225in}\texttt{png mng gif}\end{minipage}}}}}}
-\put(3.52,1.40625){\color{rgb_0000ff}$\allinethickness{0.0207555in}\circle{0.0207555}$}%
-\put(1.92,0.46875){\makebox(0,0)[c]{\hbox{\color{rgb_009800}\texttt{\Large flix}}}}
-\end{picture}%
diff --git a/graphics/epix/doc/ePiX.xp b/graphics/epix/doc/ePiX.xp
deleted file mode 100644
index c39e6b2ac0..0000000000
--- a/graphics/epix/doc/ePiX.xp
+++ /dev/null
@@ -1,156 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-void emph(const std::string& prog)
-{
-  if (prog == "all")
-    black();
-  else
-    {
-      bbold(Red());
-      label_color(Blue());
-      label_mask(Yellow(0.1));
-      label_border(Red(), "0.1pt");
-    }
-}
-
-void restore(const std::string& prog)
-{
-  if (prog == "all")
-    emph(prog);
-
-  else
-    {
-      plain();
-      black(0.5);
-      label_mask(Neutral());
-    }
-}
-
-void diagram(const std::string& prog)
-{
-  font_size("footnotesize");
-  arrow_width(1.5);
-  restore(prog);
-
-  if (prog != "laps")
-    emph(prog);
-
-  arrow(P(0,1), P(1,1));
-
-  dot(P(0,1), P(0,4), "\\texttt{xp}, \\texttt{flx}", t);
-  dot(P(1,1), P(2,4), "\\texttt{eepic}", t);
-  restore(prog);
-
-  if (prog != "epix")
-    emph(prog);
-
-  spline(P(1,1), P(1.2,1), P(1.3,0.5), P(1.5,0.5));
-  arrow(P(1.5,0.5), P(2,0.5));
-  arrow(P(2,0.5), P(3,0.5));
-
-  dot(P(2,0.5), P(0,4), "\\texttt{dvi}", t);
-  dot(P(3,0.5), P(-2,2), "\\texttt{ps}", tl);
-  restore(prog);
-
-  if(prog == "laps")
-    emph(prog);
-
-  spline(P(1,0), P(1.2,0), P(1.3,0.5), P(1.5,0.5));
-
-  dot(P(1,0), P(2,-4), "\\texttt{tex}", b);
-
-  if (prog == "elaps") // and laps
-    emph(prog);
-
-  arrow(P(3,0.5), P(3.5,0), P(4,0));
-
-  dot(P(4,0), P(4,0), "\\texttt{pdf}", r);
-  restore(prog);
-
-  if (prog == "elaps" || prog == "flix")
-    emph(prog);
-
-  arrow(P(3,0.5), P(3.5,1), P(4,1));
-
-  dot(P(4,1), P(-2,4), "\\texttt{eps}", t);
-  restore(prog);
-
-  if(prog == "flix")
-    emph(prog);
-
-  arrow(P(4,1), P(5,1));
-
-  dot(P(5,1), P(4,0),
-      "\\begin{minipage}{0.225in}\\texttt{png mng gif}\\end{minipage}", r);
-  restore(prog);
-
-  if (prog != "all")
-    {
-      font_size("Large");
-      font_face("tt");
-      label_color(Green(0.6));
-      label(P(2.5,0), prog);
-    }
-
-}
-
-int main()
-{
-#ifdef SHOW_ALL
-  picture(P(-0.5,0), P(5.75,10), "4 x 7.5 in");
-#else
-  picture(P(-0.5,2), P(5.75,10), "4 x 7.5 in");
-#endif
-
-  begin();
-  //  border();
-
-  screen laps(P(0,0), P(5,1));
-  activate(laps);
-
-  diagram("laps");
-  laps.v_scale(0.5, P(0,0.5));
-  inset(laps, P(0,8), P(5,10));
-  deactivate(laps);
-
-
-  screen epix(P(0,0), P(5,1));
-  activate(epix);
-
-  diagram("epix");
-  epix.v_scale(0.5, P(0,0.5));
-  inset(epix, P(0,6), P(5,8));
-  deactivate(epix);
-
-
-  screen elaps(P(0,0), P(5,1));
-  activate(elaps);
-
-  diagram("elaps");
-  elaps.v_scale(0.5, P(0,0.5));
-  inset(elaps, P(0,4), P(5,6));
-  deactivate(elaps);
-
-
-  screen flix(P(0,0), P(5,1));
-  activate(flix);
-
-  diagram("flix");
-  flix.v_scale(0.5, P(0,0.5));
-  inset(flix, P(0,2), P(5,4));
-  deactivate(flix);
-
-#ifdef SHOW_ALL
-  screen all(P(0,0), P(5,1));
-  activate(all);
-
-  diagram("all");
-  all.v_scale(0.5, P(0,0.5));
-  inset(all, P(0,0), P(5,2));
-  deactivate(all);
-#endif
-
-  end();
-}
diff --git a/graphics/epix/doc/epix.info b/graphics/epix/doc/epix.info
deleted file mode 100644
index 3b30c42c39..0000000000
--- a/graphics/epix/doc/epix.info
+++ /dev/null
@@ -1,4696 +0,0 @@
-This is epix.info, produced by makeinfo version 4.9 from epix.texi.
-
-   This is the manual for ePiX, Version 1.2 Copyright (C) 2001, 2002,
-2003, 2004, 2005, 2006, 2007 Andrew D. Hwang
-
-
-File: epix.info,  Node: Top,  Next: Introduction,  Prev: (dir),  Up: (dir)
-
-ePiX manual
-***********
-
-This is the manual for ePiX, Version 1.2 Copyright (C) 2001, 2002,
-2003, 2004, 2005, 2006, 2007 Andrew D. Hwang
-
-* Menu:
-
-* Introduction ::
-* Getting Started ::
-* Reference Manual ::
-* Advanced Topics ::
-* Software Freedom::
-* Acknowledgments::
-* Function Index::
-* Concept Index::
-
- --- The Detailed Node Listing ---
-
-Introduction
-
-* Changes in Version 1.2::
-* Software Dependencies::
-* Installation::
-
-Getting Started
-
-* Running `ePiX'::
-* The Drawing Model::
-* Tutorial::
-* `C++' Basics::
-* Animation::
-* Layout Tricks::
-
-Reference Manual
-
-* File Structure::
-* Picture Size and Aspect Ratio::
-* Color::
-* Scene Attributes::
-* Drawing Attributes::
-* Creating and Drawing Objects::
-* More About `C++'::
-* Attribute Quick Reference::
-
-Advanced Topics
-
-* Hidden Object Removal::
-* Extensions::
-* Programmer's Guide::
-
-
-File: epix.info,  Node: Introduction,  Next: Getting Started,  Prev: Top,  Up: Top
-
-1 Introduction
-**************
-
-`ePiX', a collection of batch utilities, creates mathematically
-accurate figures, plots, and animations containing `LaTeX' typography.
-The input syntax is easy to learn, and the user interface resembles
-that of `LaTeX' itself: You prepare a scene description in a text
-editor, then "compile" the input file into a picture. `LaTeX'- and
-web-compatible output types include a `LaTeX' picture-like environment
-written with `PSTricks', `tikz', or `eepic' macros; vector images
-(`eps', `ps', and `pdf'); and bitmapped images and movies (`png',
-`mng', and `gif').
-
-   `ePiX''s strengths include:
-
-   * Quality of output: `ePiX' creates accurate, publication-quality
-     figures whose appearance matches that of `LaTeX'.  Typography may
-     be   put in a figure as easily as in an ordinary `LaTeX' document.
-
-   * Ease of use: Figure objects and their attributes are specified
-     by simple, descriptive commands.
-
-   * Flexibility: Objects are described by attributes and Cartesian
-     location; as in `LaTeX', printed appearance is determined when the
-      figure is compiled. A well-designed figure can be altered
-     dramatically, yet precisely, with command-line switches or minor
-     changes to the input file.
-
-   * Power and extendibility: `ePiX' inherits the power of `C++' as a
-     programming language; variables, data structures, loops, and
-     recursion can be used to draw complicated plots and figures with
-     just a few lines of input. External code can be incorporated in a
-     figure with a command line option or by using a Makefile.
-
-   * Economy of storage and transmission: For a document containing
-     many figures, a compressed tar file of the `LaTeX' sources and
-     `ePiX' files is typically a few percent the size of the compressed
-      PostScript file.
-
-   * License: `ePiX' is _free software_.  You are granted the right to
-     use the program for whatever purpose,   and to inspect, modify,
-     and re-distribute the source code, so long   as you do not
-     restrict the rights of others to do the same. In   short, the
-     license is similar to the terms under which theorems are
-     published.
-
-
-   `ePiX' facilitates logical, as opposed to visual, structuring of
-mathematical figures, analogous to the relationship between `LaTeX' and
-a word processor. A few stylistic defaults streamline the creation of
-simple figures, but there are few internal restrictions on the contents
-or appearance of a figure; aesthetic and practical decisions are left
-to you.
-
-   If you are a:
-
-   * Potential user, you may wish to skip immediately to "Software
-     Dependencies" before investing additional time.
-
-   * New user, proceed from here until you have enough understanding
-     to run the software, then experiment with the samples files while
-     reading Chapter *Note chapter:started::, , or return to the
-     manual as   needed.
-
-   * More advanced user, browse at will, probably starting with
-     Chapter *Note chapter:ref-man::, .
-
-
-   This manual is relatively conversational, and occasionally redundant,
-especially between portions meant for readers at different levels of
-familiarity. Throughout, you are assumed to be familiar with `LaTeX'
-and basic linear algebra: the description of points, vectors, lines,
-and planes in three-dimensional space. Other material, such as `C++'
-syntax, is introduced as needed.
-
-* Menu:
-
-* Changes in Version 1.2::
-* Software Dependencies::
-* Installation::
-
-
-File: epix.info,  Node: Changes in Version 1.2,  Next: Software Dependencies,  Prev: Introduction,  Up: Introduction
-
-1.1 Changes in Version 1.2
-==========================
-
-`ePiX' 1.2.x has been written almost entirely from scratch.  The
-conceptual model is unchanged, but there are a few changes of syntax.
-If you're new to `ePiX', please skip straight to Section *Note
-section:software_deps::, .
-
-
-
-Except as noted below, `ePiX' 1.0 files will compile under Version 1.2.
-Generally, global variables have been deprecated or removed, and should
-be replaced by function calls in new files. The following changes are
-either required, or else strongly recommended (and may become
-mandatory).
-
-   * (Mandatory) The global variable tix in a `flix'   file must be
-     manipulated through the function tix().
-
-   * (Mandatory) The command `use_pstricks()' is obsolete.    PSTricks
-     output is obtained systematically as an output format.
-
-   * (Mandatory) Deprecated "aliases" no longer exist:   `triple' (for
-     the `P' class), `D' (for `Deriv'),   and `I' (for `Integral').
-     Lowercase trig function names   conflicted with the standard
-     namespace and have been removed.
-
-   * (Mandatory) Geometric object commands (`circle',   `plane',
-     `segment', and `sphere'), which formerly   created class objects,
-     now perform drawing just as `ellipse',   `line', `rect', etc., do.
-     The classes are available with   capitalized names (`Circle',
-     etc.).
-
-   * (Mandatory) Camera orientation is controlled with functions
-     named `tilt', `pan', and `roll'; each rotates   the camera about
-     an axis through the viewpoint, not through the   target.
-
-   * (Recommended) The global size variables x_min,   x_max, y_min,
-     y_max, x_size, and   y_size should be replaced by the function
-     calls   xmin(), etc. (No underscores.)
-
-   * (Suggested) The camera may be accessed through the function
-     `cam()'.
-
-   * (Suggested) The size and bounding box are given in one command,
-     such as `picture(P(-1,0), P(1,1), "4x3in")'. The old syntax   will
-     be retained indefinitely.
-
-
-
-
-   * Output is cleanly separated from the internal representation.
-     Figures may be written with a choice of macros--`PSTricks',
-     `tikz', and `eepic' at present--and new output types   are easily
-     coded so long as the format supports arbitrary line   segments,
-     color, and the ability to place a `LaTeX' box at a   specified
-     location.
-
-   * Colors are a manipulable data type, available in RGB, CMY, CMYK,
-     and Gray models. `xcolor'-style operations, such as color   model
-     conversion, blending, superposition, and inversion are   provided.
-
-     The camera has a filter which affects the colors of all scene
-     elements. Filters performing CMYK separation are provided.
-
-   * Color filling is controlled with declarations, similarly to line
-     colors in `ePiX' 1.0.  Arrows and markers of type spot, dot, ddot,
-      and circ are now colored like other markers.  Parametric surfaces
-      may be color-shaded.
-
-     If a figure contains many shaded elements, a color-capable output
-     format (e.g.\ `PSTricks' or `tikz') should be used for
-     efficiency.  Filled regions are implemented as fine hatching in
-     `eepic'.
-
-   * An `axis' class provides coordinate axes with labels in a
-     variety of styles: decimals or scientific notation of specified
-     precision, fractions, trig fractions, logarithmic labels in
-     arbitrary (integer) base, and user-supplied styles.
-
-   * `ePiX' 1.2.x performs page layout. Sub-figures may be manipulated
-     flexibly. The sample files give several applications.
-
-   * Non-member intersection operators for circles, planes, spheres,
-     and segments are provided.  A "non-generic" intersection does not
-     throw an exception, but instead returns an undrawable "malformed"
-      object.
-
-
-
-File: epix.info,  Node: Software Dependencies,  Next: Installation,  Prev: Changes in Version 1.2,  Up: Introduction
-
-1.2 Software Dependencies
-=========================
-
-If you run GNU/Linux, a BSD, or Solaris, you probably have (and can
-surely install) all the external software needed to use `ePiX'.  On Mac
-OS X, you will need the Apple developer tools and an X server (XCode
-and XDarwin on the Tiger disks), and the free `fink' package manager to
-build a GNU environment.  For Windows, you'll need to install Cygwin
-and several packages. Detailed instructions are given below.
-
-   "Under the hood", an input file is successively converted to a
-`LaTeX' picture; `dvi'; PostScript, `pdf' or `eps'; and if desired, to
-a bitmapped image or movie.  Four shell scripts--`epix', `laps',
-`elaps', and `flix'--automate the various file format conversions.
-
-   `ePiX' consists of a `C++' library, header, and shell scripts, and
-requires GNU `bash' and a compiler _for normal use_.  For complete
-functionality, you need `g++' (Version 3.2 or later), `bash', a text
-editor (`ePiX' works particularly well with `emacs'), a `LaTeX'
-distribution, `Ghostscript', `gv' (or your favorite PS/PDF previewer),
-and `ImageMagick'. GNU `grep' and `sed' are good to have.  You may need
-additional "developer packages" (`binutils', `make') in order to build
-`ePiX'.  The more up to date your software is, the better your
-experience is likely to be, but bleeding edge versions are not
-necessary, or even always desirable.
-
-   Aside from their reliance on specific programs, `ePiX''s shell
-scripts are written using Unix-style pathnames. Thus, the most
-straightforward way to use `ePiX' is to install a GNU environment.
-
-   Jay Belanger's `emacs' mode allows you to write, compile, and view
-`ePiX' figures without leaving `emacs'. If you use another editor,
-you'll want to create template source files so you don't have to type
-boilerplate code each time you write a new figure.  
-
-
-
-Cygwin can be used to run `ePiX' under Windows. Download `setup.exe'
-from `http://www.cygwin.com', then install the packages you need. The
-following are recommended, and sufficient for the actions described in
-this manual.
-
-(Archive)    bzip2, tar
-(Devel)      binutils, coreutils, gcc, gcc-g++, make, sed
-(Editors)    emacs, emacs-X11, vim
-(Graphics)   ImageMagick, ghostscript-base, ghostscript-x11, gv
-(Publishing) tetex (all)
-(Shells)     bash, bash-completion
-(X11)        X-start-menu-icons, X-startup-scripts,
-             XFree86-lib-compat, xorg-x11-fscl, xorg-x11-fsrv
- 
-
-
-File: epix.info,  Node: Installation,  Prev: Software Dependencies,  Up: Introduction
-
-1.3 Installation
-================
-
-`ePiX' is distributed over the World-Wide Web as source code. Packages
-may be found at `http://mathcs.holycross.edu/~ahwang/epix/ePiX.html'
-The latest stable release is also on the CTAN mirrors, in the
-`graphics' directory.  (Some users of Red Hat have reported file
-permission problems when unpacking the CTAN tarballs. If you encounter
-this difficulty, please try downloading the sources from the project
-main page.)  Unpack the compressed tar file with the appropriate
-command:
-
-  tar -zxvf epix-x.y.z.tar.gz
-  tar -jxvf epix-x.y.z.tar.bz2
- (`x.y.z' is the version number) or, if your `tar' doesn't do
-decompression,
-
-  gunzip -c epix-x.y.z.tar.gz | tar -xvf -
-  bzcat epix-x.y.z.tar.bz2 | tar -xvf -
- `cd' to the source directory, `epix-x.y.z'.  The `INSTALL' file
-contains detailed installation instructions.  If you're impatient, the
-short of it is `./configure [--options];   make; make install'.  Run
-`./configure --help' for a list of options.
-
-   By default, `ePiX' installs in subdirectories of `/usr/local'; if
-you want to install elsewhere, supply `./configure' with the
-appropriate `--prefix'. You may also want to consult `POST-INSTALL' for
-information on setting your `PATH' variable so your shell can find
-`ePiX'.  The manual and sample files are in `/usr/local/share/doc/epix'.  
-
-
-
-There are two mailing lists, one for user questions, one for
-development discussion. Please visit
-`http://savannah.nongnu.org/mail/?group=epix' to subscribe.
-
-
-File: epix.info,  Node: Getting Started,  Next: Reference Manual,  Prev: Introduction,  Up: Top
-
-2 Getting Started
-*****************
-
-This chapter describes the basics of creating figures in `ePiX' for
-readers familiar with `LaTeX' but completely new to `C++'. No detailed
-knowledge of `C++' is needed to use `ePiX', only a bit of grammar that
-is easily absorbed by example.
-
-   Section *Note section:running::, describes the commands (shell
-scripts) comprising `ePiX', and explains how to set up a graphical
-environment using standard *nix programs. Section *Note
-section:overview::, briefly describes figure creation. Section *Note
-section:tutorial::, presents a few files side-by-side with their
-output, and should be read at a computer so you can run the exercises.
-
-* Menu:
-
-* Running `ePiX'::
-* The Drawing Model::
-* Tutorial::
-* `C++' Basics::
-* Animation::
-* Layout Tricks::
-
-
-File: epix.info,  Node: Running `ePiX',  Next: The Drawing Model,  Prev: Getting Started,  Up: Getting Started
-
-2.1 Running `ePiX'
-==================
-
-An "input file" is a human-written figure specification containing
-`ePiX' commands. An "output file" is machine-created, and is included
-directly into a `LaTeX' document with the appropriate packages.
-
-   Conversion ("compiling" a figure) is accomplished with four shell
-scripts, `laps', `epix', `elaps', and `flix'.  Each script has a
-preferred extension for its input files, and is invoked with a command
-of the form
-
-  <script> [options] <input file(s)>
- Often, no options are necessary.  `<script> --help' describes
-`<script>''s options.
-
-   By default, output file names are constructed by replacing the input
-extension with the (preferred) output extension. For brevity,
-extensions may be omitted. If the script has doubts about your intent,
-it proceeds with default behavior and prints a warning message.
-
-   The author is a great fan of <TAB> completion, under which a shell,
-based on what has been typed so far, automatically fills in a command
-when the <TAB> key is pressed.  `ePiX' comes with code snippets that
-complete intelligently when the first part of a command is one of the
-shell scripts. For example, if command completion is active, typing
-`epix' <TAB> prints only names of `epix' input files. To use this
-feature, you must install Ian MacDonald's `bash completion' package.
-The `INSTALL' and `POST_INSTALL' files contain details.
-
-
-
-`laps' performs `LaTeX' to PostScript/PDF conversion, and is
-independent of the rest of `ePiX'. By default, `laps' invokes `LaTeX'
-and `dvips'. The option `--pdf' creates a PDF file by post-processing
-the PostScript with `ps2pdf'.  Other `TeX'-family processors
-(`pslatex', `pdftex', etc.) may be used instead of `LaTeX' by invoking
-`laps' with an appropriate option.
-
-
-
-`epix' compiles an input file into a `LaTeX' picture.  The input file
-should have extension `xp' (for eXtended Picture).  Jay Belanger's
-`emacs' mode is Highly Recommended; the installation procedure can be
-found in the `POST_INSTALL' file. When this mode is active, `emacs'
-automatically inserts a preamble template when a new `xp' file is
-created. In addition, you can peruse `ePiX''s info file, or format,
-compile, and preview files, all from within `emacs'.  
-
-   Output files from the script `epix' have extension `eepic', after
-Conrad Kwok's enhancements to the `LaTeX' picture environment. In
-Version 1.2, however, an output file need not contain `eepic' macros at
-all.
-
-   An output file is `input' directly into a `LaTeX' document whose
-preamble contains appropriate `usepackage' lines.  Rotated text
-requires the `rotating' package.
-
-
-
-`elaps' creates stand-alone vector images (`eps' or `pdf') from `epix'
-input files or `eepic' figures, even those not produced with `epix'.
-`elaps' automatically loads the `LaTeX' packages needed for features
-described in this manual. Additional `LaTeX' packages and `dvips'
-options may be specified on the command line.
-
-
-
-`flix' creates bitmapped images and movies, Section *Note
-section:animation::, . Input files should have extension `flx', and
-must contain a valid `epix' header as well as additional code. Jay
-Belanger's `emacs' mode facilitates creation of `flix' files.
-
-
-File: epix.info,  Node: The Drawing Model,  Next: Tutorial,  Prev: Running `ePiX',  Up: Getting Started
-
-2.2 The Drawing Model
-=====================
-
-To draw a figure manually, you select a sheet of paper of appropriate
-size and add paths, markers, and labels. These scene elements have
-attributes (line color, line width, fill color, font size, etc.)
-affecting their appearance.
-
-   `ePiX''s drawing model behaves similarly.  A `picture' command sets
-the _canvas_ (or logical drawing area, a Cartesian rectangle) and the
-true size of the final figure. A `begin' command initializes the
-"virtual paper" for drawing. Subsequent _drawing commands_ add objects
-to the scene: lines, curves, function plots, labels, and the like. The
-printed appearance of scene elements is determined by the current
-"attribute state" and controlled by _style declaration_ which remain in
-effect until superseded. Finally, an `end' command closes the figure and
-prints it to the output file.
-
-   In this manual, command descriptions follow a few conventions.
-Optional arguments are enclosed in square brackets. A `len' argument is
-either a number (representing a length in `pt') or a double-quoted
-string containing a number and a two-letter `LaTeX' length unit, such
-as `"1.5pt"' or `"6cm"'.  A `color' argument is a named primary
-(`Red()', `Cyan()', `White()', etc.), or a `Color' specified by
-densities (`RGB(r,g,b)', `CMY(c,m,y)', etc.)
-
-   * Fill color: `fill(color)', `nofill()'.
-
-   * Line color and width: `plain([color])',     `bold([color])'.
-
-   * Text size: `font_size([size])', returns to     `normalsize' if no
-     argument is given.
-
-
-   \noindent A complete list of style commands is found in Section
-*Note section:quickref::, , starting on page *Note section:quickref::.
-
-   To handle three-dimensional scenes, a `camera' performs point
-projection from a selected spatial location to the canvas. As a user,
-you'll need to control relatively few of the `camera''s parameters.
-Keep in mind, however, that elements are added to a scene in the same
-order their commands appear in the output file, and that later elements
-generally cover earlier ones. Some three-dimensional scenes require
-manual ordering of the input file; such ordering is dependent on the
-`camera''s location.
-
-   By default, `ePiX' draws thin, solid, black lines, performs no
-filling of regions, prints text in a 12 pt Roman font, and looks down
-the z axis from a large distance, giving orthogonal projection on the
-(x,y) plane. When the `camera' is moved, the z axis points vertically
-up on the page.
-
-
-File: epix.info,  Node: Tutorial,  Next: `C++' Basics,  Prev: The Drawing Model,  Up: Getting Started
-
-2.3 Tutorial
-============
-
-This section presents sample input files side-by-side with their output
-so you can compare what you write with what you'll see on the screen or
-page.  `ePiX' provides standard drawing capabilities, but like all
-software has its own idioms and personality. The basic syntax, which
-comes from `C'/`C++', should be mostly self-explanatory. One-line
-comments begin with the string "//".
-
-   To use the sample files interactively, you'll need working software:
-`bash', `emacs', `ePiX', `g++', `gv', and a running X server. To
-complete your "GUI", start `gv' and select "Watch file" from the "State"
-menu. The loaded file will update automatically when it changes.
-
-   Create a "scratch" directory, `cd' into it, and run the command
-
-  tar -zxf /usr/local/share/doc/epix/sample_src.tar.gz
- (Change the path as appropriate for your installation.)  This unpacks
-copies of the sample files into your scratch directory, including all
-the files mentioned in this manual. The `README' file serves as a table
-of contents.
-
-   Open a sample file in `emacs', compile it from the drop-down menu
-(or with the keyboard command), then open the `EPS' file in `gv'. Now
-you're ready to follow the tutorial interactively. A few suggested
-exercises are included with each file. Naturally, as you study more
-files, you'll be able to make more interesting changes on your own.
-
-
-
-The first sample, `hello.xp', contains code needed to specify the
-figure's size, followed by the classic greeting. The `border' command
-draws a box around the figure in the specified color and width, and
-serves here merely to delimit the output from the surrounding page.
-
-/* -*-ePiX-*- */
-#include "epix.h"      // These lines are analogous
-using namespace ePiX;  // to a usepackage command.
-
-int main()
-{
-  picture(P(-1,-1), P(1,1), "2 x 1in"); // corners, true size
-
-  begin(); // ---- Figure body starts here ----
-
-  border(Black(), "1pt"); // color, line width
-
-  font_size("Huge");  // May be any font size, e.g. "scriptsize"
-  label(P(0,0), "Hello, world!");
-
-  end();   // ---- End figure; write output file ----
-}
-
-
-[Image]
-
-   * Change the color and width of the   border. (`RGB(r,g,b);' creates
-     an RGB color, CMY colors are   analogous. Named primaries are
-     available. The densities should be   between 0 and 1 for
-     "expected" behavior.)
-
-   * Add `backing(Cyan());' after the `border' command.
-
-   * Put the command `crop_ellipse();' before the `border'   command.
-     Permute the `crop_ellipse' command with the   `border' and
-     `backing' lines, and note how the attribute   (`crop') affects
-     objects (`border', `backing').
-
-
-
-
-Our next file uses simple objects to draw a 2-D house-and-sun scene.
-
-
-int main()
-{
-  picture(P(0,0), P(5,2), "3.75 x 1.5in");
-
-  begin();
-
-  triangle(P(0.9, 1), P(3.1, 1), P(2, 1.5)); // vertices
-  circle(P(4,1.5), 0.25); // center and radius
-
-  rect(P(1,0), P(3,1)); // opposite corners
-
-  fill(Black(0.1));     // light gray
-  rect(P(2.3,0), P(2.7,0.8)); // the door
-  nofill();
-
-  bold();               // draw thicker lines
-  grid(P(1.4, 0.2), P(2, 0.6), 2, 2); // corners, number of squares
-
-  line(P(xmin(), 0), P(xmax(), 0));   // endpoints
-
-  end();
-}
-
-
-[Image]
-
-   * Add declarations such as `bold(RGB(1,0.9,0.5))' or
-     `fill(Yellow())' to color the scene. (Color and filling are
-     orthogonal attributes.)
-
-   \noindent The sample file `house.flx' uses loops to draw gradient
-fills of the lawn, sky, and sun, and animates a sunset.
-
-
-
-Plotted functions must be defined in the "preamble", before `main'.
-"High-level" elements--coordinate axes and grids, axis labels, and
-graphs--are drawn with mnemonically-named commands.
-
-// double = double-precision floating point
-double f(double x) { return 0.75*Sin(x) - 0.25*Sin(2*x); }
-
-int main()
-{
-  picture(P(-2,-1), P(2,1), "5 x 1in"); // [-2,2] x [-1,1]
-
-  begin();
-  revolutions(); // set angle units, [0,1] = one turn
-
-  h_axis(16); // axes w/default endpts
-  v_axis(4);
-  h_axis_labels(4, P(0,-4), b); // shift down 4pt, align below
-
-  plain(Red());
-  plot(f, xmin(), xmax(), 120); // use 120 intervals
-
-  end();
-}
-
-
-[Image]
-
-   * Define and plot some different functions; adjust the bounding
-     box as necessary. (Use repeated multiplication for polynomials.
-     The `polarplot' command graphs r=f(\theta).)
-
-   * Change the arguments to `h_axis_labels'. The first   specifies the
-     number of intervals to label; the second gives the   label offset
-     in `pt'. The last puts each label below (`b')   its Cartesian
-     location.
-
-
-
-
-Functions of two or three variables are defined just like functions of
-one variable, but for plotting the return type must be a point (`P'),
-not a real number (`double'). The `domain' class specifies the set of
-inputs to plot.
-
-
-P f(double r, double th)
-{
-  return P(r*Cos(th), r*Sin(th), pow(r, 3)*Cos(3*th));
-}
-
-int main()
-{
-  picture(P(-1,-1), P(1, 1), "2 x 1in");
-  begin();
-  pst_format();     // use PSTricks macros for output
-
-  // corners ([0,1] x [0,2\pi]) and fineness
-  // (8x40 rectangles, plotted at 16x120 resolution)
-  domain R(P(0,0), P(1, 2*M_PI), mesh(8,40), mesh(16,120));
-
-  camera.at(P(3,1,2)); // set the viewpoint
-  arrow(P(0,0,0), P(1.25,0,0)); // coordinate axes
-  arrow(P(0,0,0), P(0,1.25,0));
-
-  plain(Blue(1.2)); // line color and width
-  fill(Yellow());   // shading color
-  surface(f, R);
-
-  end();
-}
-
-
-[Image]
-
-
-
-A function can be defined by an arbitrary algorithm, and a `domain' may
-be used to plot a family of functions for several values of one
-variable.
-
-
-P sin_n(double x, double n)     // Taylor polynomial of sin x
-{
-  const int N((int) floor(n));  // convert n to an index bound
-  const double sqx(-pow(x, 2)); // -x^2
-  double val(x), summand(x);
-
-  for (int i=1; i <= 2*N+1; i += 2)
-    {
-      summand *= (sqx/((i+1)*(i+2)));   // (-1)^i x^{2i+1}/(2i+1)!
-      val += summand;
-    }
-
-  return P(x, val);    // return (x, y)
-}
-
-int main()
-{
-  picture(P(0, -1), P(6*M_PI, 1), "5 x 1in");
-
-  begin();
-
-  set_crop();
-  bold(Green());
-  plot(Sin, 0, xmax(), 120);
-
-  domain R(P(0,1), P(6*M_PI, 41), mesh(60, 40), mesh(120, 40));
-  for (int i=3; 0 <= i; --i)  // print in descending degree
-    {
-      bold(RGB(0.25*i, 0, 1-0.25*i)); // degree-dependent color
-      plot(sin_n, R.slice2(5*i+1));   // plot for n = 5i+1
-    }
-  end();
-}
-
-
-[Image]
-
-
-
-Page layout can be composed from sub-pages with `screen' objects.  In
-the loop body below, objects are added to the "active" `screen', then
-`inset' into the "canvas", the screen representing the entire figure.
-
-
-P f(double u, double v)
-{
-  return P((u-v)*(u+v), 2*u*v, u);
-}
-
-int main()
-{
-  picture(P(0,0), P(2,3), "5x7.5in"); // overall size
-
-  begin();
-
-  domain R(P(-1,-1), P(1,1), mesh(12,12), mesh(24,24));
-
-  for (int i=0; i<2; ++i)
-    for (int j=0; j<3; ++j)
-      {
-        screen my(P(-3,-3), P(3,3));
-        activate(my);
-        border(Red(0.6), "1pt");
-        // frame-dependent viewpoint
-        camera.at(sph(10, (2*j+i+1)*M_PI/8, M_PI/6));
-
-        plot(f, R);
-        arrow(P(0,0,0), 2*E_1);
-        arrow(P(0,0,0), 2*E_2);
-        // SW corner at (i, 2-j), padded by 0.05 on all sides
-        inset(P(i+0.05,2.05-j), P(i+0.95,2.95-j));
-      }
-
-  end();
-}
-
-
-[Image]
-
-
-File: epix.info,  Node: `C++' Basics,  Next: Animation,  Prev: Tutorial,  Up: Getting Started
-
-2.4 `C++' Basics
-================
-
-An `ePiX' source file is a `C++' program. If you've successfully
-modified and compiled the sample files, you know enough `C++' to use
-`ePiX'. In the author's experience, `C' grammar suffices for most
-applications.  An excellent introduction to definitions of functions
-and variables, control statements, and overall program structure is
-Kernighan and Ritchie's _The `C' Programming Language_, second edition
-`KnR'.
-
-
-
-Jay Belanger's `emacs' mode for `ePiX' inserts a file template when an
-empty buffer is opened with the extension `xp'.  This section explains
-the purposes served by the template. A few additional remarks may help
-you avoid basic syntax pitfalls.
-
-   A `C++' file consists of "statements", analogous to ordinary
-sentences. Common types include _declarations_ (which "register" a
-function, variable, or type name with the compiler), _definitions_
-(which assign meaning to declared names), and _function calls_ (which
-cause a named function to execute).  Most statements in an `ePiX' input
-file are function calls ("commands").  Plain declarations are
-relatively rare in user files, since a definition serves to declare any
-new names that it contains.
-
-   Every statement ends with a semicolon, and conventionally a file
-contains at most one statement per line.  The compiler ignores nearly
-all whitespace (spaces, tabs, and newlines), which should be used
-freely to make files easy to read.  Other punctuation (periods, commas,
-(semi)colons, parentheses, braces, and quotes) dictates file parsing,
-and must adhere stringently to grammar.
-
-   An `ePiX' file always begins with the lines 
-
-#include "epix.h" // N.B. pre-processor directive, no semicolon
-using namespace ePiX;
- The first line is analogous to a `LaTeX' `usepackage' command: It
-loads the contents of the "header" file `epix.h', importing the names
-of commands provided by `ePiX'.  To avoid name conflicts, `ePiX''s
-commands are enclosed in a "namespace". For example, the `label'
-command is actually known to the compiler as `ePiX::label'. The second
-line above tells the compiler to apply the prefix tacitly.
-
-
-
-Definitions of variables and functions play the same role in a figure
-that macro definitions play in a `LaTeX' document: gathering and
-organizing information on which the figure depends. A variable is
-defined by supplying its type, name, and initial value. By far the most
-common data types in `ePiX' are `double' (double-precision floating
-point number), `P', and `int'. The name of a variable may consist
-(only) of letters (including the underscore character) and digits, and
-must begin with a letter:
-
-my_var, var2,    MY_var, aLongVariableName;  // valid
-my-var, 2var, \v@@riable, $x, ${MY_VARIABLE}; // not valid
- Variable names are case-sensitive, and numerous (non-universal)
-conventions govern the significance of capitalization. Generally, make
-names descriptive but not unwieldy, and avoid language keywords (such
-as `const', `true', `double', `class', or `public') and names that
-begin with an underscore.
-
-   A function accepts "arguments" and "returns a value". To define a
-function in `C++', you must specify the return type, the name of the
-function, the types of the arguments, and the algorithm by which the
-value is computed from the inputs.  The code block
-
-double f(double x)
-{
-  return sqrt(1-x*x);
-}
- specifies the `double'-valued function f of one `double' variable
-defined by the formula f(x)=\sqrt1-x^2.
-
-
-
-`C++' has two types of comments. `C'-style comments, which may span
-several lines, are delimited by the strings `/*' and `*/'. One-line
-comments, analogous to the `LaTeX' `\%', are begun with `//'. A
-one-line comment may appear within a multi-line comment, but a
-`C'-style comment may not; the compiler will mistake the first `*/' it
-encounters as the end of the current multi-line comment.
-
-
-
-All the "action" in a `C++' program occurs inside the special function
-`main'. Running a compiled `C++' program is viewed by the operating
-system as calling the program's `main' function. The return value (an
-`int') is the program's exit status.  The contents of the output file
-start with `begin()' and terminate with `end()'.  Intervening
-statements constitute the _body_ of the file.
-
-   In `C++', a function may not be defined inside another function.
-Thus, variables may be defined inside `main', but functions cannot be.
-
-
-
-In `C++', a `string' is a sequence of characters. Most `string's in
-`ePiX' input files are _literals_, double-quoted `string's whose value
-is read from the input. In a string literal, backslash is an escape
-character; a single backslash is produced by a double backslash in the
-input file.  Certain letters have special meanings when
-backslash-escaped, including "\n" (newline) and "\t" (<TAB>).  Unlike
-`LaTeX', `C++' does not require a space to separate an escape sequence
-from following text; the string "\\textwidth" literally represents a
-`LaTeX' command, while "\textwidth" is read "`TABextwidth'" by the
-compiler.
-
-   Though not commonly needed, raw text can be printed to the output
-file. The functions `write', `pre_write', and `post_write' accept
-`string' arguments. `write' prints its argument where the call appears
-in the input file. The other functions print their arguments before or
-after the completed picture, respectively. These commands must be in
-the file body.  As an application, a complete `LaTeX' `figure'
-environment (with caption and label) can be produced by an `ePiX' file,
-Figure *Note fig:captioned::, .
-
-
-#include "epix.h"
-using namespace ePiX;
-
-int main()
-{
-  picture(P(-1,-1), P(1,1), "10cm x 3in);
-  begin();
-  pre_write("\@float Figure[hbt]"); // comes before the picture
-
-  post_write("\@caption{A \@code{LaTeX}\ figure.}"); // and after
-  post_write("\@end float");
-
-  < ... other ePiX commands ... >
-  write("%% A comment near the end, but inside the picture.");
-  end();
-} // End of main()
-
-Figure: Generating a self-contained figure in `ePiX'.
-
-
-
-An algorithm's behavior usually depends on internal state. A
-_conditional statement_ causes blocks of code to be executed according
-to criteria. A _loop_ repeatedly executes a code block, usually
-changing the values of variables in a predictable way, so that the loop
-exits after finitely many traversals.
-
-
-File: epix.info,  Node: Animation,  Next: Layout Tricks,  Prev: `C++' Basics,  Up: Getting Started
-
-2.5 Animation
-=============
-
-`ePiX' is well-suited to the creation of mathematically accurate
-animations: If a figure depends suitably upon a "time" parameter, then
-a loop can be used to draw the entire figure for multiple time values,
-yielding successive "snapshots" of the figure as time progresses. The
-shell script `flix' automates the process of compiling a suitable input
-file into a collection of `png's and assembling these frames into a
-`mng' or `gif' animation.  ImageMagick is the image-handling engine.
-
-   A `flix' file is an `epix' file with two restrictions:
-   * The `double' variable `tix()' is used as   "clock".
-
-   * `main' accepts two command line arguments and sets   `tix()'
-     accordingly.
-   Jay Belanger's `emacs' mode recognizes the file extension `.flx' and
-inserts template code if an empty buffer is opened. Creation of `flix'
-files is as easy as creation of `epix' files.  The `samples' directory
-contains a handful of `flix' files that may be consulted for ideas.
-
-   By default, `flix' creates movies with 24 frames, in which `tix()'
-runs from 0 to 1, and animates at 0.08 sec/frame.  These and other
-parameters can be changed with command-line options.
-
-   A "typical" `.flx' file may take 30 seconds to a few minutes to
-compile, depending on the number of frames and the complexity of each
-frame. To facilitate debugging, `elaps' can be run on a `flix' file.
-`elaps' runs in a fraction of the time, and if `elaps' can't produce a
-viewable image, `flix' will surely fail.  While running, `flix' prints
-a progress bar counting the number of `eps' files that have been
-created.  There will be a delay of a few seconds (or more) after the
-last frame is produced, during which ImageMagick's `convert' utility
-assembles the movie.  
-
-
-File: epix.info,  Node: Layout Tricks,  Prev: Animation,  Up: Getting Started
-
-2.6 Layout Tricks
-=================
-
-
-
-Stereograms are created by drawing a single scene twice from slightly
-different points of view. To create a stereogram with `ePiX', write a
-"scene" function containing the necessary drawing commands, then set
-the camera appropriately and call the scene function twice, once for
-each frame.
-
-
-
-The sample files `lorenz.xp' and `twisted_cubic.xp' use page layout to
-draw crossed-eyes stereograms. For each frame, create and activate a
-`screen', set the camera, and call the scene function. The frames are
-inset side by side in the final picture. For a crossed-eyes stereogram,
-the frame from the "rightmost" camera position is placed on the left.
-
-
-
-The sample files `cube.flx' and `mirrorball.flx' contain animated
-red-cyan stereograms, suitable for viewing with 3-D glasses. The
-technique works best with black-and-white line drawings, but the basic
-approach is the same as for crossed-eyes stereograms: Create a scene
-function and call it twice, setting the camera appropriately. Layout is
-unnecessary since the frames are superposed.  Pen colors should be
-close to red and cyan, but "optimal" choices depend on one's eyes and
-3-D glasses.
-
-
-
-Either form of stereogram can be animated in a `.flx' file, but keeping
-one's eyes properly crossed requires practice while most people can
-instantly see depth with 3-D glasses. As always when using `flix',
-debug the scene with `elaps' before compiling a movie. If a
-stereoscopic effect is difficult to see in a still image, it will be
-even harder to perceive in a movie.
-
-
-
-`ePiX' can place external images into a figure, similarly to Rolf
-Niepraschk's `overpic' package. You provide the Cartesian center point,
-the file name, and optionally the true height and/or width of the image: 
-
-  label(P(a,b), "\\includegraphics[width=w,height=h]{file}");
- This effect requires the `graphicx' package. When compiling a
-stand-alone graphic containing an external image, you must specify the
-`graphicx' package on the command line: `elaps -p graphicx <file>'
-
-
-File: epix.info,  Node: Reference Manual,  Next: Advanced Topics,  Prev: Getting Started,  Up: Top
-
-3 Reference Manual
-******************
-
-This chapter details `ePiX''s capabilities, discussing attributes and
-data types, and listing available commands in the form
-
-  label(P posn, [P offset], string text, [align]);
-  circle(P ctr, double rad=1, normal=P(0,0,1));
- As in Chapter *Note chapter:started::, , function arguments are given
-by type (`P', `double', `string', etc.)\ and name, or by name alone if
-the type is clear. Optional arguments are enclosed in square brackets.
-A few argument types, such as `[align]' above, admit only a small
-number of values; these cases are explained when the corresponding
-command is first introduced.
-
-   A name followed by an equals sign and a value indicates a default
-argument; if omitted in an input file, the compiler substitutes the
-default value. Only trailing arguments may be specified this way.  For
-example, if the `rad' argument of the `circle' command is omitted, the
-`normal' argument _must_ be omitted as well.
-
-   In an input file, only an argument's value is given, not the type:
-
-  label(P(0,0), P(0,-4), "Hello world", b);
-  circle(P(0,-0.25), sqrt(2)); // use default normal
-
-   Generally, `len' signifies either a number (representing a length in
-`pt') or a double-quoted string containing a number and a two-letter
-`LaTeX' length unit, such as `"1.5pt"' or `"6cm"'. `color' represents a
-`Color' object constructed from a named primary (`Blue()',
-`Magenta(0.7)', etc.), a color specification (`RGB(r,g,b)',
-`CMY(c,m,y)', etc.), or an operator applied to an existing `Color'.
-
-* Menu:
-
-* File Structure::
-* Picture Size and Aspect Ratio::
-* Color::
-* Scene Attributes::
-* Drawing Attributes::
-* Creating and Drawing Objects::
-* More About `C++'::
-* Attribute Quick Reference::
-
-
-File: epix.info,  Node: File Structure,  Next: Picture Size and Aspect Ratio,  Prev: Reference Manual,  Up: Reference Manual
-
-3.1 File Structure
-==================
-
-An `ePiX' input file constitutes a short `C++' program. When this
-program is compiled and run by one of the shell scripts, it creates a
-figure file suitable for inclusion in `LaTeX'.
-
-   Like a `LaTeX' document, an `ePiX' file contains a _preamble_, which
-sets up a drawing environment, and a _body_, which contains actual
-figure-generating commands.  The minimal file has the form 
-
-#include "epix.h"  // N.B. no semicolon
-using namespace ePiX;
-
-int main() {
-  picture(P(a1,b1), P(a2,b2), "n1 [unit1] x n2 unit2");
-  begin(); // end of preamble, start of body
-  end();   // end of body
-}
- `ePiX' commands are of four general types: drawing, attribute setting,
-definitions (of data and functions), and operations on existing
-objects. Except as noted below, drawing and attribute commands must
-appear in the body, between `begin()' and `end()'. Function definitions
-must come in the preamble, before `main()'. Data definitions may appear
-in the preamble or body.
-
-
-
-The `end()' command writes the output file to `stdout', using `eepic'
-macros by default. The shell scripts redirect `stdout' to an
-appropriate disk file.
-
-   The attribute-setting command `pst_format()' causes the output file
-to be written using `PSTricks' macros when `end' is called. Similarly,
-`tikz_format()' causes the file to be written using `tikz' macros, and
-`eepic_format()' causes the file to be written using `eepic' macros.
-These commands may appear anywhere in the figure body. There is no
-reason for a file to contain more than one such command.
-
-   The output format may be selected on the command line, overriding any
-explicit request in the input file. Supplying `epix', `elaps', or
-`flix' with one of the options `--pst', `--tikz', or `--eepic' is
-tantamount to issuing a `pst_format()' (etc.)\ command just before the
-end of the file. These options are listed in decreasing precedence. If
-more than one is given, the "strongest" applies, regardless of the
-command line order.
-
-   A figure may be written directly to a specified disk file, in a
-format unaffected by the command line flags above. The command
-
-  print_eepic("file.tex");
- writes the figure to the named file using `eepic' macros. Analogous
-commands exist for the formats `pst' and `tikz'. These commands perform
-an immediate action. Consequently, the command's location in the input
-file is significant, and multiple commands may appear in a single file,
-so long as distinct file name arguments are provided. Applications
-include writing the same figure in multiple formats, or creating
-successive "snapshots" of a lengthy computation.
-
-
-File: epix.info,  Node: Picture Size and Aspect Ratio,  Next: Color,  Prev: File Structure,  Up: Reference Manual
-
-3.2 Picture Size and Aspect Ratio
-=================================
-
-The `picture' command specifies a figure's logical and true sizes. In
-the "minimal file" snippet above, the _canvas_ is the Cartesian
-rectangle [a_1,a_2]\times[b_1,b_2] whose corners are given. Either pair
-of opposite corners is acceptable, but confusion is less likely when
-the SW and NE corners are given, in this order.
-
-   The true (printed) width and height are read from `picture''s third
-argument, a "size `string'" such as "4cm x 1in", containing a number
-and optional `LaTeX' length unit, an `x', another number, and a
-mandatory length unit. Spaces may be used for legibility.  The
-mandatory length unit becomes the `LaTeX' `unitlength'.  The argument
-"4cm x 1in" creates a picture 4 cm wide and 1 in high, but internally
-converts 4 cm to inches.  Recognized length units are `pt' (points, the
-default), `cm' (centimeters), `in' (inches), `mm' (millimeters), `pc'
-(picas), and `bp' (big points).  (`1in = 2.54cm = 72bp = 72.27pt', `1pc
-= 12pt'.)
-
-   The logical and true sizes may be defined separately with the
-commands 
-
-  bounding_box(P(a1,b1), P(a2,b2));
-  picture(n1, n2);
-  unitlength(len); // len a length string, not a double
- One way or another, the logical and true dimensions _must_ have
-positive values when the `begin()' command is issued.
-
-   `LaTeX' treats the contents of a picture environment as a single box,
-aligned by default on its lower left corner. An `offset' command
-accepts two `double' arguments or a size `string' and shifts the page
-location accordingly. The command `offset("0.25 x -0.5cm")' shifts the
-picture right 0.25 cm and down 0.5 cm.  If the `unitlength' is 1 cm,
-the command `offset(0.25, -0.5)' has the same effect.
-
-   A non-zero `offset' causes a picture's contents to appear in a
-location where `LaTeX' does not expect them. This can be useful in a
-`LaTeX' document, but should be avoided when compiling a stand-alone
-image, since `dvips' may crop according to rules of its own.
-
-   The canvas's corners are `(xmin(),ymin())' and `(xmax(),ymax())',
-while its width and height are `xsize()' and `ysize()'. The canvas is a
-virtual, advisory data structure; its dimensions are not directly
-related to the figure's printed size, and picture elements may lie
-outside the canvas. Affine scaling maps the canvas to the page when the
-output file is written.
-[Image]
-
-   The figure's aspect ratio is controlled by sizing the canvas.  The
-aspect ratio is "true" if the canvas and page rectangles are
-geometrically similar, e.g., if both boxes are 1.5 times as wide as
-they are tall.
-
-
-File: epix.info,  Node: Color,  Next: Scene Attributes,  Prev: Picture Size and Aspect Ratio,  Up: Reference Manual
-
-3.3 Color
-=========
-
-`ePiX' provides a `Color' data type. Four models are implemented:
-`RGB', `CMY', `CMYK', and `Gray'.  A `Color' holds primary color
-"channels", each carrying an intensity between 0 (no color) and 1 (full
-saturation).  "No color" means black in `RGB' and `Gray', white in
-`CMY(K)'.  `RGB', `CMY', and `CMYK' colors are written to the output
-file as commands in the corresponding model. `Gray' shades are written
-in `RGB'.
-
-   Operations on red-green-blue colors are described below.
-Functionally, colors are converted to `RGB', operated upon, then
-converted back to the original model. Conversions are as described in
-Uwe Kern's `xcolor' manual `xcolor'.
-
-
-
-Each color model has a "constructor" creating a color of specified
-densities. The `RGB' and `CMY' models have named "primary"
-constructors; the density argument is optional and defaults to 1.  
-
-  // red-green-blue colors
-  RGB(double r=0, double g=0, double b=0);
-  Red(d=1);   Green(d=1);   Blue(d=1);
-  White(d=1);   Black(d=1);
- 
-
-  // cyan-magenta-yellow colors
-  CMY(double c=0, double m=0, double y=0);
-  Cyan(d=1);   Magenta(d=1);   Yellow(d=1);
-  CMY_White(d=1);   CMY_Black(d=1);
-
-  // gray
-  Gray(double d=0); // equivalent to RGB(d, d, d)
- Each `CMY' constructor has a corresponding `CMYK' function, e.g.\
-`CyanK()' or `CMYK_White()'.
-
-   Though color densities lie between 0 and 1, `ePiX''s primary color
-constructors take arguments mod 4, viewed as elements of [-2,2].
-Consider `Red(d)', "red with density d". For integer values of d, the
-constructor has the following meanings: `Red(0)' is black, `Red(1)' is
-red, `Red(2)'=`Red(-2)' is white, and `Red(-1)' is anti-red, or cyan.
-For non-integer d, the constructor interpolates between the bracketing
-integer values, Figure *Note fig:densities::, . Other primary
-constructors work analogously.
-
-
-[Image]
-
-Figure[hbt]
-
-   Let \delta:[-2,2]\to[0,1] be the piecewise-linear function that
-converts real numbers to primary color densities, \clip:R\to[0,1] the
-clipping function.  The non-primary constructor `RGB(r, g, b)' computes
-the density of the red channel as
-\clip\bigl(\delta(r)+\delta(-g)+\delta(-b)\bigr); the green and blue
-channel densities are computed similarly. Every color can be created
-with arguments between 0 and 1, but the constructor accepts arbitrary
-real arguments and returns colors varying "continuously and
-periodically".
-
-   Colors possess an "alpha-channel" for transparency. Except as
-supported by the output format, this feature is a stub.
-
-
-
-Colors can be scaled, inverted, blended, superposed, and filtered. In
-the code below, `tint' is a `Color'. The effect of each operation is
-described in the `rgb' model; the visual result is the same in all
-models.  
-
-  tint *= double c; // multiply channels by c, rebuild
-  tint.invert();    // (r, g, b) -> (1-r, 1-g, 1-b)
-  tint.blend(Color col, double t);  // (1-t)*tint + t*col
-  tint.superpose(col); // add channels, then clip to [0,1]
-  tint.alpha(double d); // set alpha channel to clip(d)
-
-  tint.filter(col); // return min density in each channel
- Except for `filter', these operators modify their object.  `filter'
-simulates the effect of viewing `col' through a transparent sheet of
-`tint', and returns a new `Color' object having the same model as
-`tint' without modifying `tint' itself.
-
-
-File: epix.info,  Node: Scene Attributes,  Next: Drawing Attributes,  Prev: Color,  Up: Reference Manual
-
-3.4 Scene Attributes
-====================
-
-Objects in a scene sit in 3-dimensional space. A _camera_ maps objects
-to the _active screen_. The active `screen' may, in turn crop its
-contents. Each drawing command creates an object, "photographs" it, and
-adds the image to the active `screen'. This section describes the
-`Camera' and `screen' classes and a few associated concepts.
-
-
-
-By default, angles are measured in `radian's. Two other angular modes
-are available: `degrees' and `revolutions'. The angular mode is set
-with a named command, `radians()', `degrees()', or `revolutions()'. The
-current angular mode affects all trigonometric functions and operations.
-
-
-
-Three-dimensional scenes are drawn on flat paper by applying a
-mathematical transformation. By default, `ePiX' uses _point
-projection_, the technique used by art students when they trace on a
-window with grease pencil, Figure *Note fig:camera::, .
-
-
-[Image]
-
-Figure[hbt]
-
-   `ePiX' depicts a Cartesian world by projecting mathematically to a
-screen plane, then affinely scaling to a printed page. The camera,
-which maps the world to the screen, consists of a _body_ (data that
-determines the position and orientation of the camera), a _lens_ (the
-actual mapping to the screen plane), and a _filter_ (a color through
-which the scene is viewed).
-
-
-
-The camera's spatial orientation is described by a triple of mutually
-perpendicular unit vectors.  In memory of happy days at the beach,
-these vectors are called _sea_, _sky_, and _eye_. The screen plane is
-parallel to the sea-sky plane; the sea vector points horizontally to
-the right, sky points vertically upward. The eye is their cross
-product, which points directly at the viewer.
-
-   The sea-sky-eye basis is located at the _viewpoint_, the camera's
-spatial location. The _target_, the origin of the screen plane, lies on
-the line through the viewpoint in the direction opposite the eye
-vector.  The distance from the viewpoint to the target is the _range_.
-The _camera sphere_ is centered at the viewpoint and passes through the
-target.  The orientation, viewpoint, target, and range completely (and
-redundantly) determine the camera's geometric situation in the world.
-
-
-
-A _lens_ maps the world to the screen.  `ePiX' comes with four lenses:
-_shadow_ (the default), _orthogonal_, _fisheye_, and _bubble_. Each
-lens simulates the appearance of world objects as seen by an observer
-at the viewpoint. The shadow lens is point projection from the
-viewpoint to the screen plane. The orthogonal lens projects from
-infinite distance.  Each of the other lenses performs radial projection
-to the camera sphere, then maps the sphere to the screen plane; the
-fisheye lens does orthogonal projection (so the entire image lies
-inside the disk centered at the target whose radius is the range) while
-the bubble lens does stereographic projection from the target's
-antipode.  
-
-   An input file normally uses a single camera, so a global object named
-`camera' is defined automatically. At the start of a figure, the
-`camera' looks down on the (x_1,x_2)-plane from a distant point on the
-x_3-axis. The resulting view, essentially projection along the axis, is
-suitable for 2-dimensional figures.
-
-   The `camera' is manipulated similarly to a real camera: 
-
-  camera.at(P posn);          // set viewpoint to posn
-  camera.look_at(P targ);     // set target to targ
-  camera.range(double dist);  // fix target, move viewpoint
-  camera.focus(double dist);  // fix viewpoint, move target
-  camera.tilt(double angle);  // rotate about the sea axis
-  camera.pan(double angle);   // rotate about the sky axis
-  camera.roll(double angle);  // rotate about the eye axis
-  camera.clip_range(dist);    // cull scenery closer than dist
- Explicitly setting the viewpoint or target makes the sky vector
-parallel to the projection of the x_3 axis when possible; otherwise the
-x_2-axis is used. Setting the range or focus moves the `camera'
-parallel along the eye line. Each command re-sizes the image; note that
-increasing the focus _enlarges_ the image. The three rotation
-operations fix the viewpoint, but only roll fixes the target.
-
-
-
-The `camera' has a _filter_ through which all scene `Color's pass. For
-uniformity, the filter should only be set at the start of the file
-body, before any visible elements have been placed in the scene.  The
-filter has two primary uses--model conversion and color separation--but
-can also be used for special effects.
-
-   There is a `Neutral' color, for which filtering has no effect at
-all. The `camera''s default filter is `Neutral'. In addition, each
-color model has a _neutral_ representative, `RGB_Neutral', etc. Passing
-`Color's through a neutral filter preserves their appearance but
-converts them to the neutral `Color''s model.
-
-   Filtering can be used to "split" a `Color' into primary
-constituents. For `RGB' channels, the primaries themselves are suitable
-filters. For `CMYK' channels, there are special _process_ filters,
-named C_Process, etc.
-
-  camera.filter(CMY_Neutral());  // convert all colors to CMY
-  camera.filter(Gray_Neutral()); // black and white photography
-  camera.filter(Green());        // the green channel
-  camera.filter(M_Process());    // the magenta channel
-  camera.filter(Red(1.4));       // la vie en rose?
- 
-
-
-
-Two operations handle elements lying far from the target.  _Cropping_
-culls elements based on their screen location, and is described later.
-_Clipping_ removes objects whose spatial location lies outside the
-"clip region".
-
-   Initially, the clip region is a very large box centered at the
-origin. Commands are provided to resize this box, keeping the faces
-parallel to coordinate planes.  
-
-  clip_box(P pt1, P pt2); // opposite corners
-  clip_box(P pt);         // opposite corners pt and -pt
-  clip_to (P pt);         //                  pt and P(0,0,0)
-  clip_box();             // very large box
- Additional "clippers" may be added manually. Individual clipping
-planes are specified by a point and inward-pointing normal vector.
-Parallel planes cutting a "slice" or "slab" are described by a
-location, direction, and a distance. The location lies halfway between
-the clipping planes, and the planes' normals point toward the location.  
-
-  clip_face(P loc, P perp); // perp points inward
-  clip_slice(loc, perp);    // very close parallel planes
-  clip_slice(loc, perp, dist); // planes separated by dist
-  clip_restore();  // remove manually-added clip planes
- Like `clip_restore', the `clip_box' and `clip_to' commands remove all
-user-specified half spaces.  
-
-
-
-By default, drawing occurs in the Cartesian coordinate system of the
-`canvas'. However, insets and subfigures are most naturally composed in
-"local" coordinates, then placed into their final location as a unit, a
-process called _layout_. `ePiX' implements layout with the `screen'
-class.
-
-
-
-A `screen' is a Cartesian plane containing a distinguished coordinate
-rectangle, its _bounding box_. The `canvas' of a figure is a `screen',
-as is the internal representation of the printed page.  At any point of
-a file body, some `screen' is _active_, or "open for drawing". A new
-`screen' is created from a pair of opposite corners, but is not used
-until explicitly activated.  
-
-  screen subfig(P(a1,b1), P(a2,b2)); // [a1, a2] x [b1, b2]
-  activate(subfig);   // open subfig for drawing
-  // commands to draw in subfig
-  deactivate(subfig); // re-activate the previous screen
-
-   The `canvas' is automatically drawn at the `end' of the input file.
-The contents of other `screen's must be incorporated into the `canvas'
-explicitly with an `import' or `inset' command. `import' affinely
-scales the bounding box of the "child" `screen' to the `canvas'. `inset'
-specifies corners in the "parent" where the child is placed.  
-
-  import();           // active screen to canvas
-  import(subfig);     // subfig to canvas
-  inset(P sw, P ne);  // active screen to specified rectangle
-  inset(subfig, sw, ne); // subfig to specified rectangle
-  inset(subfig);      // inset to subfig's corners
-
-
-
-The portion of a `screen' enclosed by a specified rectangle can be
-_extracted_. Each of the commands 
-
-  subfig.extract(P sw, P ne);
-  canvas().extract(P sw, P ne);
- returns the `screen' having stated corners and containing part of
-`subfig' or the `canvas', respectively. Elliptical and diamond-shaped
-portions of a `screen' may be extracted.  The contents occupy the
-ellipse or diamond inscribed in the given rectangle.  
-
-  subfig.extract_ellipse(sw, ne);
-  canvas().extract_diamond(sw, ne);
- The `screen' returned by `extract' (or its variants) may be used just
-like a manually-constructed `screen', for example to construct a
-magnified inset.
-
-
-
-On occasion, it is necessary to draw at known page size, independently
-of the unit length. For 2-dimensional drawing in the (x_1,x_2)-plane
-with the `camera' in its default location, the coordinates (horizontal,
-vertical, or both) of a `screen' may be interpreted as true pt offsets
-relative to a specified point rather than as Cartesian coordinates.  
-
-  inlay(subfig, P loc);
-  inlay_horizontal(subfig, loc);
-  inlay_vertical(subfig, loc);
- Each command maps the origin of `subfig' to the specified location in
-the active `screen'. The first performs affine scaling so that one
-Cartesian unit in `subfig' maps to one true pt on the page.  The second
-and third commands perform this scaling only in the named direction.
-
-   The `inlay' functions are suitable only for 2-dimensional effects.
-For 3-dimensional true-size drawing, the function `pt_to_screen'
-converts a true length of 1 pt into Cartesian coordinates in the active
-`screen'. For example, the command `line(P(0,0),
-P(pt_to_screen(12),0))' draws a line segment 12 pt long with its left
-endpoint at the Cartesian origin. True size drawing is unusual in an
-input file, but has definite uses in library code; `ePiX''s right angle
-marker is a typical application.
-
-   Either type of true-size drawing works as described when drawing in
-the `canvas', and _only_ when drawing in a `screen' imported to the
-`canvas' at "true Cartesian" size (one `screen' unit maps to one
-Cartesian unit in the `canvas').  In other situations, the true size
-coordinate(s) will be scaled by additional affine transformation(s).
-
-
-
-A `screen' has a _crop mask_: rectangular (default), elliptical, or
-diamond-shaped. If cropping is switched on in the active `screen',
-added elements are cropped to the crop mask.  For example, cropping by
-the default crop mask in the `canvas' ensures the figure lies inside
-the printed region allocated by `LaTeX'.
-
-   The `crop' commands below affect the active `screen' only. Cropping
-is not a "global" attribute, but must be set or unset explicitly for
-each `screen'. By default, cropping is switched off.  
-
-  set_crop();      // activate cropping
-  set_crop(false); // deactivate cropping
-  crop_diamond();  // <>-shaped mask, set crop state
-  crop_ellipse();  // etc...
-  crop();          // crop active screen's contents
- Normally the crop mask is inscribed in the `screen''s bounding box.
-The commands `crop_diamond' and `crop_ellipse' also accept a pair of
-`P' arguments, which are treated as corners of the crop box.
-
-   The active `screen' may be decorated with a `border' (outline of
-specified color and line width) and `backing' (solid fill color). The
-crop mask determines the shape of the `border' and `backing'.  
-
-  border(color, len);
-  backing(color);
- Identically-named member functions can be applied to an arbitrary
-`screen' whether or not it is active:
-
-  scr.crop_rectangle().backing(Blue(1.8));
-  canvas().crop();
-
-
-
-A _plane affine map_ has the form T(x) = Ax+b for some invertible
-2\times2 matrix A and a constant vector b. `ePiX''s `affine' class
-allows affine maps to be built and applied to `screen's' contents.
-
-   An affine map is uniquely determined by the images of three
-non-collinear points.  The constructor returns the affine map sending
-the points (1,0), (0,1), and (0,0) to `pt1', `pt2', and `pt0',
-respectively.  
-
-  affine af(P pt1, P pt2, P pt0=P(0,0));
- To emphasize, the arguments are locations, not displacements, and the
-image of the origin comes last.  There is also a `void' constructor
-(taking no arguments) which returns the identity map.
-
-   To facilitate construction of affine maps, an existing `affine' may
-be post-composed with a variety of "elementary" affine transformations.
-In the commands below, `th' is an angle (in current units), `sc' is a
-non-zero `double', and `ctr' is a point fixed by the composing
-transformation. In each command, `ctr' defaults to (0,0).  
-
-  affine af; // the identity map
-  af.shift(P arg);    // translate by arg
-  af.rotate(th, [ctr]);  // counterclockwise rotation about ctr
-  af.reflect(th, [ctr]); // reflect across line through ctr
-
-  af.h_scale(sc, [ctr]); // horizontal scaling
-  af.v_scale(sc, [ctr]); // vertical scaling
-  af.scale(sc, [ctr]);   // dilatation
-
-  af.h_shear(sc, [ctr]); // shear preserving horizontals
-  af.v_shear(sc, [ctr]); // shear preserving verticals
-
-  af.invert();           // the inverse
-  af.postcomp(affine f); // post-compose with f
-  af(f);                 // pre-compose, af not modified
- A non-invertible `affine' can be created _only_ by shearing or scaling
-with an extremely large or extremely small argument, or by supplying
-three collinear points to the constructor.  Calling `invert' on a
-non-invertible map merely issues a warning and performs no action.
-
-   An `affine' may be applied to a `screen''s current contents.  The
-`screen' class has eight member functions (`shift' through `shear')
-with syntax identical to the affine map functions. In addition, an
-arbitrary `affine' may be applied to a `screen': 
-
-  scr.shift(arg); // shift scr's contents by arg; etc.
-  scr.apply(f);   // apply f to scr's contents
- To apply a composition of several maps to a `screen', it's best to
-build an `affine' map by composition, then `apply' the map. Composing
-`affine's is cheap; `apply'ing an `affine' is costly in proportion to
-the number of elements in the `screen'.
-
-   Applying an `affine' to a `screen' has no effect on the bounding
-box, `border', or `backing', and may move elements outside the bounding
-box even if cropping is active. To ensure a `screen''s contents lie
-inside the bounding box, `crop' the `screen' _after_ `apply'ing the
-`affine'(s).
-
-   The sample file `inverse.xp' uses `affine' maps to depict branches
-of inverse functions in one variable, `symmetry.xp' depicts the
-permutation group S_3 by its action on a regular hexagon.  
-
-
-File: epix.info,  Node: Drawing Attributes,  Next: Creating and Drawing Objects,  Prev: Scene Attributes,  Up: Reference Manual
-
-3.5 Drawing Attributes
-======================
-
-`ePiX' maintains drawing states for filled regions, paths, and text
-objects.
-
-
-
-Filling is either on or off. When filling is active, closed paths are
-filled with the current _fill color_.  
-
-  fill();   // turn filling on
-  fill(color); // turn filling on, specify color
-  nofill(); // turn filling off, same as fill(false);
-
-
-
-Paths and borders of filled regions are drawn with two _pen_s, each
-described by color and line width. The _line pen_ draws all path-like
-objects. The _base pen_ does nothing unless it is wider then the line
-pen, in which case it draws an "underlayer" or "border" on the line pen.  
-
-  pen(len);          // set line pen width
-  pen(color);        // set line color, keep width
-  pen(color, len);   // set color and width
- As usual, `len' may be either a length string or a `double',
-interpreted as a width in `pt'.  There are `base' functions with the
-same signatures and analogous meanings for the base pen.
-
-   The line width can be set with named declarations; the optional
-argument sets the line color: 
-
-  plain([color]); // 0.4pt
-  bold([color]);  // 0.8pt
-  bbold([color]); // 1.6pt
-
-
-
-By default, path-like objects are drawn with solid lines. Dashed,
-dotted, and free-form path style patterns are also available. (The
-`base' underlayer is always solid.) The page length of a pattern
-defaults to 12 pt, but can be set.  
-
-  line_style(string);
-  dash_size(len=12);
- The path style is set with a WYSIWYG string of dashes, spaces, and
-periods, representing a pattern of dashes, gaps, and dots. In the
-sample styles below, the repeating units have the same page size, 12 pt.
-[Image]
-
-   For brevity and uniformity, named commands are provided.  
-
-  solid(); "-"     dashed(); "-  -"    dotted(); " . "
- A sequence of n dashes, spaces, and dots corresponds to a dash/dot
-pattern in an interval divided into n subintervals of equal length. If
-the ith character is a dash or space, the ith subinterval is drawn
-solid or empty, respectively. If the ith character is a period, a dot is
-placed at the midpoint of the ith subinterval.
-
-   This pattern is applied to a path-like object as follows. The page
-length of each edge is divided by the current `dash_size' and the
-ceiling (next largest integer) taken. This many copies of the current
-path style are scaled onto the edge. The first and last characters are
-adjacent in repeated units.
-
-   There are three inequivalent ways to adjust the dash length/dot
-spacing in a non-line path: Change the `dash_length', create a path
-with a different number of points, or use a longer, repetitive pattern.
-For best results, the style string should not be longer than about a
-dozen characters.
-
-   If you need several dashed/dotted line styles in multiple figures,
-it's best to define a custom header instead of hard-coding line styles.
-See Section *Note section:extensions::, for guidance.  
-
-
-
-Two types of textual element may appear in a file: _labels_ (text
-boxes) and _markers_ (`LaTeX' symbols). A marker occupies a box of zero
-size, and is placed at a specified Cartesian location. A label has
-typographical size, and is usually offset from its Cartesian location.
-For placement, an _alignment point_ is attached to each label, and
-Cartesian coordinates position the alignment point.
-
-
-
-A label is printed as a `LaTeX' box.  By default, the alignment point
-is its reference point, the intersection of the left edge and the
-baseline, which is used by `LaTeX' to position the box on the
-page:[Image]
-
-   The alignment point may be _offset_ manually by a specified number
-of `pt'. Additionally, a label's location with respect to the alignment
-point can be chosen with an optional `LaTeX'-style alignment option.
-This scheme allows labels to be placed easily where they will not
-overlap other parts of the figure, and ensures labels stay properly
-positioned when the size or aspect ratio of a figure changes.  
-
-  label(P posn, P offset, string msg, [align]);
-  label(posn, msg);
- The first two components of the `offset' argument are numbers of `pt'
-to shift the alignment point right and up.  The optional `align'
-argument may be one--or an appropriate pair--of `t', `b', `r', or `l'
-(top, bottom, right, left), or `c' (center). These alignment options
-specify the position of the label _relative to the Cartesian location_
-`posn', namely they work _opposite_ to the way they work in `LaTeX'.
-[Image]\qquad   [Image]
-
-   The `msg' argument is usually a snippet of `LaTeX' code enclosed in
-double quotes. `C++' treats "\" as an escape character, so a double
-backslash is needed in the source to get a single backslash in the
-output. For example,
-
-  label(P(0,0), P(2,-1), "$\\rho = \\sin\\theta$", br);
- positions an alignment point `2pt' right and `1pt' below the
-(Cartesian) origin, and typesets the equation \rho=\sin\theta below and
-to the right.
-
-   Labels can be rotated; the (counterclockwise) angle is set in current
-angle units with the command `label_angle(theta)'. For example, a
-rotation angle of 90 degrees prints labels along a vertical axis.
-Though label rotation has legitimate uses, it can make labels more
-difficult to read, defeating their purpose. Do not use rotated labels
-merely because they are available. As a practical matter, if an output
-file contains rotated labels, the enclosing document must use the
-`rotating' package. `elaps' automatically loads this package.
-
-   An `affine' behaves moderately intelligently when acting on a marker
-or label. The mapping is applied to the label's location, and the
-"linear part" is used to adjust the offset and label angle. No attempt
-is made to treat alignment. For best results, if a `screen' will have
-an `affine' applied to it, label positions should be fine-tuned only
-with offsets, not alignment arguments.  In all situations, the font
-itself is unchanged; no attempt is made to print sheared, scaled, or
-reflected text. The sample file `inverse.xp' illustrates the effect of
-affine maps on labels.
-
-
-
-By default, the font in an `ePiX' figure is that of the enclosing
-document. The font size and face are changed with "declaration-style"
-commands such as 
-
-font_size("Large");
-font_face("sc");
- The argument of font_size is a valid `LaTeX' size. If no argument is
-given, `normalsize' is understood. font_face accepts a two-letter
-string, appended to the string "`text'" to give a `LaTeX' font
-declaration command ("`textsc'" above).  Finer-grained control is
-accomplished by placing `LaTeX' commands into the label text.
-
-
-
-Each label command has a corresponding "mask" version (`masklabel')
-that draws an opaque rectangle under the label text. The mask size
-exceeds the label's size by an amount of _padding_, and the mask is
-itself surrounded by a rectangular _border_, of specified color and
-width.  
-
-  label_color(color);         // set label text color
-  label_mask(color=White());  // set mask color
-  label_pad(string len);
-
-  label_border(color, [len]); // set color (and line width)
-  label_border(len);          // set line width only
-  no_label_border();          // turn off label borders
-
-
-
-`ePiX''s marker types, listed in Table *Note table:marker::, , are
-obtained with the command marker(P pt, <MARKER TYPE>); Several
-"dot-like" marker types are available by name: [Image] 
-
-  spot(P pt);  dot(P pt);   ddot(P pt);
-     ---       box(P pt);   bbox(P pt);
-  ring(P pt);  circ(P pt);     ---
- A `circ' is filled with the current `mask_color', and a `ring' is
-"hollow".  Each dot-like marker can also be called with label syntax,
-generating a labeled marker with one command.
-
-  dot(P posn, offset=P(0,0), msg="", align=none); // etc.
-
-   By default, `spot' and `ring' are 4 pt in diameter; `dot', `box',
-and `circ' are 3 pt in diameter; `ddot' and `bbox' are 2 pt in
-diameter. At arbitrary diameter, a `spot' is 4/3 the diameter of a `dot'
-and a `ddot' is 2/3 the diameter.  The command `dot_size(diam=3)' sets
-the diameter of a `dot', and hence the size of all dot-like markers.
-
-
-[Image]
-
-Table[tb]
-
-
-
-When constructing and placing a label,
-   * Offsets are specified in `pt' (true length), not Cartesian
-     units: A label's location relative to its alignment point should
-     not   depend on the logical or printed size of the figure.
-
-   * The label text is enclosed in double quotes (the single
-     character `"'), and contains the `LaTeX' code to generate the
-     label. Backslashes are doubled.      
-   
-
-
-Old-style color declarations set the fill color, line color, and text
-color.  
-
-  rgb(r, g, b);      cmyk(c, m, y, k);
-  rgb(P);            cmyk(P);  // for function-controlled colors
-  red(d);  // similarly for other primaries
- 
-
-
-File: epix.info,  Node: Creating and Drawing Objects,  Next: More About `C++',  Prev: Drawing Attributes,  Up: Reference Manual
-
-3.6 Creating and Drawing Objects
-================================
-
-Scene elements include geometric objects, coordinate grids, axis
-labels, and function plots. A few commands create an object (a point,
-line segment, circle, sphere, or plane) that can be used in subsequent
-computations, but most drawing commands automatically create, draw, and
-discard objects.
-
-
-
-The simplest object in the world, and by far the most common named data
-structure, is `P', an ordered triple of real numbers (double-precision
-floats). The function `P(x1,x2,x3)' creates the point (x_1,x_2,x_3). If
-only two arguments are provided, x_3=0 by default. This convention
-allows `ePiX' to treat 2- and 3-dimensional figures uniformly. The
-standard basis is available: `E_1=P(1,0,0)', etc.
-
-   Depending on context, a `P' may represent either a _location_
-(point) or a _displacement_ (vector). Almost all `ePiX' functions treat
-a `P' as a point. However, algebraic operators and commands that plot
-vector fields treat `P' arguments as displacements.
-
-   Polar, cylindrical, and spherical coordinate `P' constructors are
-sensitive to the current angular mode.  
-
-  P pt=polar(r,t);   // (r*Cos(t), r*Sin(t), 0)
-  P pt=cis(t);       // (Cos(t), Sin(t), 0) = polar(1, t)
-  P pt=cyl(r,t,z);   // (r*Cos(t), r*Sin(t), z)
-  P pt=sph(r,t,phi); // polar(r,t)*Cos(phi) + (0,0,r*Sin(phi))
-
-   Algebraic operations--addition/subtraction, scalar multiplication;
-scalar, cross, and componentwise products; orthogonalization--can be
-performed on `P's.  In compound expressions, the binary operators below
-should be enclosed in parentheses, and scalars must be collected at
-left, `P's at right.  
-
-  double u=pt.x1();   // first coordinate of pt, etc.
-  P(a,b,c)|P(x,y,z);  // scalar product, ax+by+cz
-  P(a,b,c)&P(x,y,z);  // componentwise product (ax, by, cz)
-  P(a,b,c)*P(x,y,z);  // cross product (bz-cy, cx-az, ay-bx)
-  J(p);               // quarter turn about the x3-axis
-  p%q;                // orthogonalization, p (mod q)
- Explicitly, `p\%q' is the unique vector `p+k*q' perpendicular to `q'.
-
-   `P' operations express mathematical relationships, and therefore
-imbue a figure with logical structure, making the input file easier to
-read, modify, and maintain. Commonly, a file preamble will define a few
-named points with hard-coded coordinates, then define additional points
-of interest using `P' operators.  
-
-
-
-In addition to `P', objects of type `Circle', `Plane', `Segment', and
-`Sphere' can be used for Euclidean geometry constructions. Simple
-affine operations are supplied for each type, as is a `draw()'
-function, which represents the object as a path in the screen.  
-
-  obj.shift(P arg);    // translate by arg
-  obj.move_to(P arg);  // move center to arg
-  obj.scale(double c); // scale about center by c
-  obj.draw();
- A `Segment''s "center" is its midpoint. A `Plane' has no center;
-`move_to' translates the `Plane' to pass through `arg', and `scale' has
-no effect.
-
-   A `Circle' data structure consists of a center, radius, and a
-perpendicular unit vector. Three constructors are provided: 
-
-  Circle(center=P(0,0,0), double rad=1, normal=E_3);
-  Circle(P center, P point);
-  Circle(P p1, P p2, P p3);
- The second constructor creates the `Circle' parallel to the (x_1,x_2)
-plane, with given center, and radius equal to the distance between the
-arguments. (A warning is printed if the second argument does not lie on
-the circle, namely, if the arguments do not lie in a plane parallel to
-the (x_1,x_2) plane.) The third returns the `Circle' passing through
-the given points; the points must not be collinear.
-
-   The data defining a `Circle' are recovered with member functions
-named `center()', `radius()', and `perp()'.
-
-   A `Plane' is specified by a point and normal vector, or by three
-non-collinear points. The `draw()' function clips the plane and draws
-the resulting polygon. Unless the clip box has been set manually, the
-clipped polygon's vertices will have large coordinates.
-
-   A `Segment' is constructed from its endpoints. The member function
-`midpoint()' returns the center.
-
-   A `Sphere' is specified by a point and a radius--by default the
-origin and unity, or by the center and a point on the sphere. Member
-functions `center()' and `radius()' return the defining data.
-Capabilities specific to geography and spherical geometry are described
-below, pp. *Note non-eucl::ff.
-
-   The `draw()' function of a `Sphere' draws the horizon visible from
-the current viewpoint. While this horizon is a circle in object space,
-its image in the screen is generally an ellipse.  Antipodal points are
-not generally mapped to points symmetrically placed with respect to the
-center of this ellipse. These effects are most pronounced when the
-viewpoint is close to the `Sphere' and the center is not close to the
-`target'.
-
-
-
-To facilitate geometric computation, `ePiX''s `Circle', `Plane',
-`Segment', and `Sphere' classes can be intersected with the `*'
-operator.
-
-   A `Circle' has a center, radius, and unit normal; a `Plane' has a
-distinguished point and unit normal; a `Segment' has two endpoints; a
-`Sphere' has a center and radius. An object is _malformed_ if these
-conditions are not met.  The constructors return well-formed objects
-with two exceptions: `Circle' and `Plane' create malformed objects if
-called with three collinear points.  The operator `*' returns a
-malformed object if either argument is malformed, or if the operands
-are disjoint, tangent, or coincident.  Malformedness is benign: Calling
-`draw()' on a malformed object does nothing.
-
-
-
-A `frame' comprises three mutually perpendicular unit vectors. The
-constructor takes three vectors. The `frame''s third vector e_3 is
-positively proportional to `v3', the second vector e_2 is positively
-proportional to `v2\%v3', and the first is the cross product,
-e_1=e_2\times e_3. Thus, a `frame' is right-handed, and does not depend
-on `v1'.
-
-   The elements of a `frame' are named `sea', `sky', and `eye', just as
-for the `camera'. A `frame' can be rotated through an arbitrary angle
-about any of its elements.  
-
-  frame();        // the standard basis {E_1, E_2, E_3}
-  frame fr(v1, v2, v3); // orthonormalize {v1, v2, v3}
-  fr.sea();       // the first element of fr, etc.
-  fr.rot1(theta); // rotate fr through theta about sea, etc.
-
-
-
-Basic path-like objects are drawn with named commands. Arguments of
-polygon commands are endpoints/vertices. Except for `line' and `Line',
-the following are subject to filling.  
-
-  line(P p1, P p2, [double expand]);
-  Line(p1, p2);  // draw line through p1, p2 (crop required)
-  triangle(P p1, P p2, P p3);
-  rect(P p1, P p2);
-  quad(P p1, P p2, P p3, P p4); // quadrilateral
-  circle(ctr=P(0,0,0), rad=1, normal=E_3);
-  circle(ctr, pt);
-  circle(pt1, pt2, pt3);
- The optional `line' argument is an expansion parameter:
-`line(p1,p2,t);' draws a segment centered at the midpoint of `p1' and
-`p2', with length scaled by 2^t/100. (Setting t=100 doubles the length,
-while t=-100 halves the length.) The arguments of `rect()' must lie in
-a plane parallel to a coordinate plane. The arguments to `circle'
-commands are the same as for `Circle' constructors.
-
-   Quadratic and cubic splines are described by their control points.  A
-list of `P' is drawn as a "natural" spline (the C^2 piecewise cubic
-curve with vanishing second derivatives at the endpoints); the number
-of points per cubic segment must be specified.  Circular and elliptical
-arcs are given by center, a basis, angular range, and an optional
-number of intervals.  
-
-  spline(P p1, P p2, P p3, [int n]);       // quadratic
-  spline(P p1, P p2, P p3, P p4, [int n]); // cubic
-  spline(vector<P>, int n);                // natural spline
-
-  arc(P ctr, rad, t_min, t_max);  // parallel to (x1,x2)-plane
-  ellipse(P ctr, P v1, P v2);     // in plane spanned by v1, v2
-  ellipse(P ctr, P v1, P v2, t_min, t_max, [int n]);
- If parameter bounds are omitted in an `ellipse' command, the entire
-ellipse is drawn.  When the angular range subtends one or more full
-turns in an `arc' or `ellipse' the curve is subject to filling.
-
-   Commands for planar (half-)ellipses remain from `ePiX''s early days: 
-
-  ellipse(P ctr, P radius);
-  ellipse_left(P ctr, P radius);
-  ellipse_right(P ctr, P radius);
-  ellipse_top(P ctr, P radius);
-  ellipse_bottom(P ctr, P radius);
- If `radius' is `P(a,b)', these commands draw all or half of the
-ellipse with given center in the (x_1,x_2) plane, axes parallel to the
-coordinate axes, and axis lengths 2a and 2b.
-
-   Two commands are available to mark off right angles or a subtended
-angle. Each accepts a spatial location and two non-zero directions, and
-draws a scene element in the plane spanned by the vectors.  
-
-  right_angle(P loc, P v1, P v2, scale=8);
-  arc_measure(P loc, P v1, P v2, scale=8);
-  arc_measure(P loc, P v1, P v2, offset, text, align, scale=8);
- The `right_angle' command does not check its arguments for
-perpendicularity. The `arc_measure' commands mark the _small_ angle
-subtended by the directions; the label form places a label at the
-midpoint of the arc. The (optional) `scale' argument is the true size
-in `pt' of the marker.
-
-
-
-Consider a path made up of equal-length segments that can point at any
-angle of the form 2\pi k/n radians, for 0\leq k<n, like spokes on a
-wheel. A path is specified by a finite sequence of integers, taken
-modulo n. For example, if n=6, then the sequence 0, 1, -1, 0 corresponds
-to the ASCII path _/_.  `ePiX''s fractal approximation starts with such
-a "seed" then recursively (up to a specified depth) replaces each
-segment with a scaled and rotated copy of the seed, Figure *Note
-fig:fractal::, . The seed above generates the standard von Koch
-snowflake fractal. In code: 
-
-  const int seed[] = {6, 4, 0, 1, -1, 0};
-  fractal(P(a,b), P(c,d), depth, seed);
- The first entry of `seed[]' (here 6) is the number of "spokes" n, the
-second (4) is the number of terms in the seed, and the remaining
-entries are the seed proper. The final path joins (a,b) to (c,d). The
-number of segments in the final path grows exponentially in the depth,
-so depths larger than 5 or 6 are likely to exceed the capabilities of
-`LaTeX' and/or PostScript.
-
-[Image]
-
-Figure[hbt]
-
-
-
-Line segments, splines, and arcs can be drawn with arrowheads at one
-end.  In profile, an arrowhead's width is `3pt', and its height is 5.5
-times the width.  The actual printed height depends on the head's
-orientation with respect to the camera.  By default, an arrowhead is a
-filled triangle. The shape and size are adjusted with declarations: 
-
-  arrow_width(w=3);   // width in pt
-  arrow_ratio(r=5.5); // height-to-width
-  arrow_inset(c=0);   // base indent as frac of ht
- [Image]\qquad [Image]\qquad [Image] \\ The `inset' must be between -1
-and 1. Each `arrow' command accepts an optional `scale' argument, which
-scales the arrowhead.  
-
-  arrow(P tail, P tip, [scale]);
-  arrow(P p1, P p2, P p3, [scale]);   // spline arrows
-  arrow(P p1, P p2, P p3, P p4, [scale]);
-  arrow(P ctr, P v1, P v2, t_min, t_max, [scale]); // ellipse
- A few "special-purpose" commands are supplied: 
-
-  dart (P p1, P p2);  // same as arrow(p1, p2, 0.5);
-  aarrow(P p1, P p2); // double-headed arrow <--->
-  arc_arrow(ctr, rad, t_min, t_max, [scale]);
- If an `arc_arrow' is too short, nothing is drawn.
-
-
-
-`ePiX' provides an `axis' class for coordinate axes. Labels are
-generated automatically in a variety of styles: decimal, scientific
-notation, fraction, and trigonometric fraction. Logarithmic axes and
-labels are available. Axis and labeling commands from Version 1.0 have
-been retained.
-
-
-
-An `axis' consists of a line segment divided into a specified number of
-equal-length subintervals by "major" (long) tick marks.  Each
-subinterval may be divided further by "minor" (short) tick marks.
-Minor ticks may be equally-spaced ("Cartesian") or logarithmically
-placed. Finally, a label is written at each major tick mark with
-specified offset and alignment. Labels are generated automatically from
-the endpoints, so the line should be parallel to a coordinate axis.
-Label attributes (masking, borders, font size and face, rotation angle)
-are determined by the current label style, not by the `axis'.
-
-   The command 
-
-  axis(P tail, P head, int n, P offset=P(0,0), [align = none]);
- creates an axis joining `tail' to `head', divided into `n' segments of
-equal length, with a major tick mark and label at each division point
-and endpoint. The `offset' and `align' arguments have the same meaning
-as for ordinary labels.
-
-   The number and length of minor ticks, and the alignment of ticks, are
-controlled with member functions: 
-
-  axis Ax(P(a,c), P(b,c), n);
-  Ax.subdivide(n);  // put n-1 minor ticks in each axis segment
-  Ax.tick_ratio(r); // minor length = r*major length
-  Ax.align(AL=c);   // align all ticks; AL = t, b, l, r, or c
- By default, major ticks are `6pt' long and twice the length of minor
-ticks. The global declaration `tick_size(len)' sets the major length,
-subject to "reasonable stylistic limits". For visual consistency, tick
-lengths should not be changed casually.
-
-   Labels on an `axis' may be drawn in several styles, selected with
-member functions: 
-
-  Ax.dec();  // decimals (default)
-  Ax.frac(); // fractions, e.g. 0.5 -> \frac{1}{2}
-  Ax.trig(); // fractional multiples of \pi
-  Ax.sci();  // scientific notation, k\times base^N
-
-  Ax.unmark(double); // remove label at selected location
-  Ax.precision(p);   // set number of digits for decimal labels
-  Ax.align_labels(AL); // re-align labels
- Arbitrary textual labels depending on one coordinate are obtained by
-writing a `string'-valued function of `double' and "registering" it: 
-
-  // f represents x as a string in given precision and base
-  std::string f(double x, unsigned int prec, unsigned int base);
-  Ax.label_rep(f);
- For example, textual tags can be printed instead of numeric labels.
-
-   By default, an `axis' is Cartesian. The member function `log(int
-b=10)' converts an `axis' to "log mode" with specified base; this
-affects both tick marks and labeling. If `b' is at least 3, minor tick
-marks appropriate for a logarithmic axis base `b' are drawn. Second,
-labels are written in decimal or scientific notation appropriately for
-a logarithmic axis; that is, "k\times b^N" (or its decimal value) is
-written at location N+\log_b k.
-
-   Minor ticks of a log `axis' may be labeled individually; again, this
-is controlled with member functions: 
-
-  Ax.tag(d);   // labels at N+log_b(d)
-  Ax.tag235(); // tag 2, 3, and 5 if b=10
-  Ax.tags();   // tag 1, ..., b-1
-  Ax.untag();  // remove all tags, including 1
-  Ax.untag(double);  // remove one tag, e.g. Ax.untag(9);
-
-   For convenience, an `axis' object along an edge of the active
-`screen' can be created with a named command: 
-
-  top_axis(n, offset, align);
-  bottom_axis(n, offset, align);
-  left_axis(n, offset, align);
-  right_axis(n, offset, align);
- The ticks automatically point into the bounding box.
-
-   The functions above create objects or set `axis' attributes, but
-write no output. Tick marks and labels can be printed separately, or at
-once: 
-
-  Ax.draw();        // axis, tick marks, and labels
-  Ax.draw_ticks();  // axis and ticks only
-  Ax.draw_labels();
-
-
-
-`ePiX' formerly supplied commands for drawing simple axes and their
-labels. These commands have been kept for compatibility.  Horizontal
-axes are generated with 
-
-  h_axis(p1, p2, n, align=c);    // n subintervals (n+1 ticks)
-  h_log_axis(p1, p2, n, align=c, base=10);
- For vertical axes, use `v_axis'.  The style of tick mark is
-appropriate for an axis of the given type.  Horizontal axis tick marks
-may be aligned `t' (above the axis) or `b' (below). Similarly, vertical
-axis ticks may be aligned `r' or `l'.
-
-   The endpoint arguments of a coordinate axis may be omitted, in which
-case they default to p_1=(x_min,0) and p_2=(x_max,0) for a horizontal
-axis, or to p_1=(0,y_min) and p_2=(0,y_max) for a vertical axis. If the
-bounding box has integer width and/or height, omitting the number of
-points draws tick marks one unit apart.
-
-   Labels for a horizontal Cartesian or logarithmic axis are generated
-with the commands 
-
-  h_axis_labels(P p1, P p2, int n, P offset, [align]);
-  h_axis_masklabels(p1, p2, n, offset, [align]);
-  h_axis_log_labels(p1, p2, [n], offset, [align], base=10);
-  h_axis_log_masklabels(p1, p2, [n], offset, [align], base=10);
- Labels for a vertical axis are generated with `v_axis_labels', etc.
-The labels are automatically generated to match their horizontal
-location.  The first puts (n+1) evenly-spaced labels on the segment
-joining `p1' and `p2'. As with ordinary labels, the `offset' is in
-`pt', and the optional `LaTeX'-style alignment option positions the
-labels using their corners.  The second command draws masked labels
-according to the current label masking attributes. The third writes
-labels in exponential notation, using the Cartesian coordinate as
-exponent.
-
-   As for coordinate axes, the initial and final points may be omitted
-in an `axis_[mask]labels' command, with the same defaults.  The
-`offset' and number of labels must always be specified.
-
-
-
-Broken axes are best drawn using page layout, especially if axis labels
-are to be drawn. To accomplish the task, create a screen for each piece
-of axis, using appropriate Cartesian coordinates for the corners, then
-`inset' the screens so the axis pieces are nearly end to end. A zig-zag
-glyph signifies the break: 
-
-  axis_break(P, P, scale=12);
- The `P' arguments are the screen coordinates of the ends to be joined;
-the optional third argument is the true height and width in `pt' of the
-glyph. The sample file `coord_tricks.xp' uses layout and axis breaks.
-
-
-
-Cartesian grids fill a coordinate rectangle, and have a specified
-number of lines in each direction. A polar grid has specified radius,
-and numbers of rings and sectors.  
-
-  grid(n1, n2);         // fills the bounding box
-  grid(p1, p2, n1, n2); // fills the box with corners p1, p2
-  polar_grid(r, n1, n2);
-
-   Log and semi-log grids are drawn with analogous syntax: 
-
-  log_grid (p1, p2, n1, n2, [base1], [base2]); // log-log
-  log1_grid(p1, p2, n1, n2, [base]);           // log-lin
-  log2_grid(p1, p2, n1, n2, [base]);           // lin-log
- The n_i arguments dictate the number of squares, namely the number of
-orders of magnitude spanned in the logarithmic direction(s).  The
-(optional) base arguments default to 10, and control the number of
-lines drawn per order of magnitude. As with Cartesian grids, the
-corners are optional; if omitted, the grid fills the bounding box.
-
-   Graph paper may be created by superimposing grids: 
-
-  pen(0.25);
-  grid(10*xsize(), 10*ysize());
-  pen(0.5);
-  grid(2*xsize(), 2*ysize());
-  pen(1);
-  grid(xsize(), ysize());
-
-
-
-A `path' data structure is an ordered list of points that can be
-cropped, clipped, mapped, concatenated, and drawn.  The first four
-constructors mirror polygon-drawing commands above.  Function graphs
-and parametric paths are built from a real- or `P'-valued function `f'
-of one variable.  
-
-  path(p1, p2, expand=0);     // line (endpoints)
-  path(p1, p2, p3, [n]);      // quadratic spline
-  path(p1, p2, p3, p4, [n]);  // cubic spline
-  path(p1, v1, v2, t_min, t_max, [n]); // ellipse
-  path(f, t_min, t_max, [n]);
-
-   The member function `pt()' accepts a `P' or three (or two) doubles
-and appends the specified point to a `path'.  This snippet creates a
-regular n-gon:
-
-  path ngon; // declare new path
-  for (int i=0; i<=n; ++i)
-    ngon.pt(cis(i*full_turn()/n)); // works in all angle modes
- Compound paths may be built by concatenation.  If `path1' and `path2'
-share an endpoint, the commands
-
-  path1 += path2;
-  path1 -= path2;
- replace `path1' with the result of traversing `path1' "forward", then
-following `path2' in the forward or reverse direction (respectively).
-For expected results, the first (or last) point on `path2' should be
-the last point of `path1'. The notation suggests 1-dimensional homology
-chains. The sample file `contour.xp' illustrates path creation and
-manipulation.
-
-   A `path' is a data structure, and must be drawn explicitly to create
-visible output. By default a `path' is not a closed loop (even if the
-first and last points are the same), and is not filled when drawn.
-Member functions perform these tasks. Continuing the n-gon snippet
-above, 
-
-  ngon.close(); // mark path as closed
-  ngon.fill();  // draw filled region if filling is active
-  ngon.draw();  // print to the screen
- `path::close()' adds a closing edge if necessary. Once a `path' is
-closed, no more points can be added. A closed path clips and crops
-differently than an open `path' with the same data. `path::fill()' has
-no effect on an unclosed `path'.
-
-
-
-The noun "map" refers to a `C++' function that accepts one or more
-`double' arguments and returns a `double' or a `P'. Mathematically, a
-map can be depicted in two ways: as a graph (which retains information
-about the domain), or as a parametrized curve or surface (which
-discards domain information). `ePiX' assumes that `double'-valued maps
-are graphed and `P'-valued maps are drawn parametrically. Either sort
-of depiction is called a "plot".  `ePiX' plots are either "wire mesh",
-produced by a `plot' command, or "shaded", produced by a `surface'
-command.
-
-
-
-For the moment, "function" means "function of one variable" (precisely,
-a `double'-valued function of a `double' variable). A function graph
-depends on the domain and the number of points to use. Each of the
-commands 
-
-  plot(f, t_min, t_max, n);
-  polarplot(f, t_min, t_max, n);
-  shadeplot(f, t_min, t_max, n);
- graphs the function `f' on the interval `[t_min, t_max]' by dividing
-the interval into `n' subintervals of equal length.  The first gives a
-Cartesian plot, the second a polar plot with bounds in current angular
-units, the third shades the region between the graph and the horizontal
-axis. If two functions are given to `shadeplot', the region between
-their graphs is shaded.
-
-
-
-An `ePiX' `domain' is a coordinate box of dimension one, two, or three,
-specified by a pair of opposite corners and two _meshes_ ("coarse" and
-"fine", respectively) which specify the amount of data to be plotted.
-Plotting is explained in detail below.  
-
-  // [a1,a2] x [b1,b2]: n1 x n2 rectangles, m1 x m2 intervals
-  domain R2(P(a1,b1), P(a2,b2), mesh(n1,n2), [mesh(m1,m2)]);
-
-  // [a1,a2] x [b1,b2] x [c1,c2] divided analogously
-  domain R3(P(a1,b1,c1), P(a2,b2,c2),
-            mesh(n1,n2,n3), [mesh(m1,m2,m3)]);
- If unspecified, the fine mesh is the same as the coarse mesh. For
-expected behavior, the coarse mesh should "divide" the fine mesh, in
-that m_i should be a (usually small) integer multiple of n_i for each i.
-
-   A `domain' may be _resized_ in any coordinate for which the
-thickness is positive, and can be _sliced_ by setting one variable to a
-constant. The result of slicing is a `domain' whose dimension is one
-smaller than the original.  Finally, "`slices'" operators return the
-list of `domain's obtained by setting one variable to evenly-spaced
-constants.  By default, the number of slices is specified by the coarse
-mesh. An optional argument specifies the number of slices. This
-argument need not be related to the coarse mesh.  
-
-  R2.resize2(a,b); // [a1,b1] x [a,b]
-  R2.slice1(t);    // set x1 = t
-  R3.slices3([n]); // (n+1) domains with x3 = const
-[Image]
-
-   \smallskip When possible, resizing preserves grid square sizes.
-Generally, though, integer truncation occurs: If `R=domain(P(0,0),
-P(1,1), mesh(10,6))', then `R.resize1(0,0.25)' is the rectangle
-[0,0.25]\times[0,1] subdivided into 2\times6 subrectangles, since
-10\div4=2 in integer arithmetic. For expected behavior, choose mesh
-sizes to avoid integer truncation.
-
-   The arguments of a `plot' command are a map, followed by either a
-domain or its logical equivalent.  
-
-  double f(double t) { return t*t; }
-  P F(double u, double v) { return P(u, v, exp(u)*Sin(v)); }
-  P G(double u, double v, double w) { return P(v*w, u*w, u*v); }
-
-  plot(f, a, b, n);       // f:[a,b] -> R, using n intervals
-  plot(F, R2);            // graph of exp(u)*Sin(v)
-  plot(G, R3.slice2(0.5); // G: R^3 -> R^3 restricted to y=0.5
- By (compiler-enforced) convention, `plot' commands involving a
-`P'-valued map accept a `domain' argument, as in the second and third
-commands above. To plot a `double'-valued function, by contrast, supply
-the logical equivalent of a `domain', usually the endpoints and the
-number of intervals, as in the first `plot' command above.
-
-   Resizing and slicing allow a map `F' to be plotted selectively over
-parts of its domain. This can be used to emphasize parts of the image,
-layer scene elements, patch surfaces together, and so forth.  Resize
-and slice(s) commands may be used directly in a `plot' command: 
-
-  plot(F, R2.resize1(0,0.5));
-  plot(F, R2.slices1());
-
-
-
-The `P' arguments of a `domain' are a pair of opposite corners. The
-first `mesh' argument, the _coarse_ mesh, specifies the number of
-subdivisions in each coordinate direction.  The second `mesh', the
-_fine_ mesh, determines the number of points used in each direction
-when plotting.
-
-   Separating the roles of coarse and fine meshes allows a plot to
-conform closely to a surface without using a fine grid of curves.  Both
-parts of Figure *Note fig:plot::, are drawn with a 6\times20 coarse
-mesh. In the first picture, the fine mesh is also 6\times20, while in
-the second, the fine mesh is 12\times60.
-
-
-[Image]     [Image]
-
-Figure[hbt]
-
-   The coarse mesh is significant only for domains of dimension at
-least 2. The coarse mesh's size determines the number of curves or
-surfaces plotted _perpendicularly_ to a coordinate direction, while the
-fine mesh's size determines the number of segments used _along_ that
-direction.  For predictable results, the fine mesh should be a small
-multiple of the coarse mesh.
-
-   Plotting works analogously for 3-dimensional `domain's and maps
-depending on three variables: The "one-dimensional skeleton" of the
-`domain''s image is drawn.  A `P'-valued map of three variables can be
-plotted over a 1- or 2-dimensional `domain'. (The effect may be
-unexpected unless the domain arises by slicing, however.) A map
-depending on one or two variables cannot be plotted over a
-3-dimensional `domain'.  
-
-
-
-`ePiX''s shaded surface plotting implements a degree of hidden surface
-removal. The algorithm breaks a surface into mesh fragments, sorts them
-in decreasing (approximate) distance to the camera, and prints them.
-If filling is active, a mesh fragment is shaded according to the angle
-between the normal vector and the direction to the camera, simulating
-constant ambient lighting; otherwise, the current fill color is used.
-This technique works fairly well for surfaces without intersection, and
-even acceptably handles intersecting surfaces for which mesh elements
-intersect only along boundaries.
-
-   The syntax of a `surface' command is identical to a `plot' command
-when only a single surface is drawn. For example, 
-
-  surface(F, R, cull=0);
- plots the `P'-valued function `F' over the domain `R', the shaded
-equivalent of the corresponding `plot' command. The optional `cull'
-argument removes elements that point toward (`cull=-1') or away from
-(`cull=1') the camera. Naturally, orientation of mesh elements depends
-on the parametrization `F', not merely on the surface. Culling reduces
-the output file size, but is useful mostly for closed, convex surfaces.
-
-   There are special commands for surfaces of rotation; each accepts a
-final `cull' argument.  
-
-  surface_rev(f, t_min, t_max, n_lats, n_longs);
-  surface_rev(f, g, t_min, t_max, n_lats, n_longs=24);
-  surface_rev(f, g, R, frame coords);
- The first revolves the graph of f about the x-axis, the second uses
-the parametric curve t\mapsto\bigl(f(t),g(t)\bigr) as profile. In each
-case, the parameter interval [t_min,t_max] is divided into n_lats
-equal-length subintervals, n_longs copies of the profile curve are
-drawn, and the complete surface (one full turn) is drawn.
-
-   The third form uses a `domain' to control the range of longitudes,
-and draws a surface of rotation in the Cartesian coordinate system
-defined by the orthonormal basis `coords', by default the standard
-basis. The arguments `f' and `g' define a parametric curve in the plane
-spanned by the first two elements of `coords', and the first element is
-the axis of rotation.
-
-   As in wire mesh plotting, the fine mesh is used to draw the
-boundaries of surface patches; this tends to make surfaces look
-smoother for modest-sized coarse meshes. If the coarse mesh is too
-coarse, however, two visually undesirable effects can occur. First,
-adjacent regions of the surface may be shaded very differently, since
-shading is constant over patches defined by the coarse mesh. Second, a
-patch nearly tangent to a line of sight may be drawn badly if the patch
-bends back on itself, since the boundary of the _patch_ is drawn, not
-the visible edge of the mathematical surface. See
-`samples/artifacts.xp'.
-
-
-
-A scene containing two or more shaded surfaces cannot generally be
-built up one surface at a time. Instead, multiple surfaces must be
-assembled into a single data structure before they can be drawn.
-Multiple surfaces are built from one or more maps and one or more
-2-dimensional `domain's. In the code snippets below, `F' and `G' are
-`P'-valued functions of 3 variables, and `R' is a 3-dimensional
-`domain'.
-
-   To plot the images of several `domain's under a _single map_,
-assemble the `domain's into a list if necessary, then issue a `surface'
-command: 
-
-  surface(F, R.slices3(), cull=0);
-
-  domain_list DL(R.slice1(0));  // build domain list
-  DL.add(R.slice2(0.5));        // add a domain, etc.
-  surface(G, DL, cull=0);       // draw
- For multiple maps, `ePiX' provides the `scenery' class. Conceptually,
-`scenery' is an agglomeration of shaded surfaces, built one surface at
-a time from maps and 2-dimensional `domain's. The `add' function
-accepts two arguments--a map, and either a `domain' or a list of
-`domain's--and contributes its data to the `scenery' rather than
-plotting immediately. Completed `scenery' is drawn manually.  
-
-  scenery S(F, R.slice3(0.25)); // S contains one surface
-  S.add(F, R.slice2(0));        // S contains two surfaces
-  S.add(G, R.slices1(3));       // S contains six surfaces
-  S.draw(cull=0);
- Complete examples are included in the `samples' directory:
-`spherical.xp' and `minkowski.xp'.
-
-   In principle, a scene may contain arbitrarily many surfaces. However,
-figures that contain many objects tend to tax `LaTeX''s internal
-stacks. Frequent color changes exacerbate the problem.  Even if you use
-`hugelatex' (or increase `LaTeX''s memory), a figure containing more
-than a few thousand mesh elements is unlikely to compile. At moderate
-resolution, a surface can easily contain 1000 patches. Each shell
-script has a command-line option to invoke `hugelatex'; your mileage
-may vary.
-
-
-
-By default, a `surface' or `scenery' is colored according to the
-current fill color. For finer control, each `surface', `surface_rev',
-and `scenery' command accepts an optional position-dependent `color'
-specification.  
-
-  surface(F, R, color, cull=0);
-  surface_rev(f, [g], t_min, t_max, n_lats, n_longs, color);
-  surface_rev(f, g, R, color, [coords]);
-
-  scenery S(F, R, color);
-  S.add(F, R, color);
- The `color' argument is a `P'-valued function of two or three
-`double's whose output is interpreted as a set of `RGB' densities. If
-`color' takes two arguments, they are `domain' coordinates, and the
-surface is colored according to parameter values. If `color' takes
-three arguments, they are Cartesian coordinates, and the surface is
-colored according to spatial location.  Please see the sample files
-`surface_shade.xp' and `S2_harmonics.xp'.  
-
-
-
-`ePiX' provides high-level commands for plotting derivatives and
-definite integrals, Riemann sums, tangent lines, slope- and vector
-fields, and solutions of planar and spatial systems of differential
-equations.
-
-   In this section, `f' and `g' are `double'-valued functions of one
-variable.
-
-
-
-
-  sup(f, a, b);     // max/min of f on [a,b]
-  inf(f, a, b);
-  newton(f, g, x0); // find approximate crossing point
- Newton's method returns the crossing point of the given functions,
-starting from the specified seed, which should be reasonably close to
-the expected solution. If a critical point is hit or 5 iterations pass,
-a warning is issued and the current result (probably incorrect) is
-returned. The second function g defaults to the zero function if
-omitted.
-
-
-
-The classes `Deriv' and `Integral' are used to calculate values of
-derivatives and integrals, and to plot these functions.  
-
-  Deriv df(f); // function object: df(x) = f'(x)
-  df.eval(t);  // return f'(t)
-  df.left(t);  // deriv from left at t:  (f(t)-f(t-dt))/dt
-  df.right(t); // deriv from right at t: (f(t+dt)-f(t))/dt
-
-  Integral prim(f,a); // function object: prim(x) = int_a^x f
-  prim.eval(b);  // numerical integral of f over [a,b]
-  double val(Integral(f).eval(1));   // val = \int_0^1 f
- The lower limit on an integral is 0 by default. `Deriv's and
-`Integral's can be used directly in a `plot' command: 
-
-  plot(Deriv(f), a, b, n);  // plot f' over [a,b]
-  plot(Integral(f, x0), a, b, n);
-  riemann_sum(f, a, b, n, TYPE);
- The second graphs the definite integral x\mapsto\int_x_0^x f(t)\,dt
-over [a,b]. As above, x_0 defaults to 0. The third draws rectangles or
-trapezoids whose area approximates the definite integral of f over
-[a,b]. The `TYPE' may be `UPPER', `LOWER', `LEFT', `RIGHT', `MIDPT', or
-`TRAP'.
-
-   Tangent lines and envelopes (families of tangent lines) are drawn
-with 
-
-  tan_line(f, t);                // f real- or vector-valued
-  envelope(f, t_min, t_max, n);  // family of tangent lines
-  tan_field(f, g, t_min, t_max, n); // field of tangents
- The sample files `conic.xp' and `lissajous.xp' illustrate these
-features.
-
-
-
-Let `F' be a `P'-valued function of two or three variables.  
-
-  ode_plot(F, p_0, t_min, t_max, n);
-  flow(F, p_0, t_max, n);
- The first plots the solution curve of the initial-value problem
-\dotx=F(x), x(0)=p_0, over the specified time interval.  If t_min is
-omitted, its value is 0, so the curve starts at p_0. With manual
-calculation to rotate a planar field a quarter turn, `ode_plot' can be
-used to draw level curves (isobars) of a function of two variables; see
-the sample file `dipole.xp'.  The `flow' function returns the result of
-starting at p_0 and flowing by F for time t_max, using Euler's method
-with n time steps.  This is useful for placing markers or arrowheads
-precisely along a flow line.
-
-   A planar or spatial vector field itself may be plotted over a domain
-`R' in three styles: 
-
-  vector_field(F, R, [scale]); //  true length
-  dart_field  (F, R, [scale]); // const length
-  slope_field (F, R, [scale]); // const length
- The field is sampled at the grid points of the coarse mesh. If the
-domain is 2-dimensional, the plot is a planar slice of the field, even
-if the field depends on three variables. If the domain is
-3-dimensional, the field is drawn in successive slices x_3=const,
-starting at the height of the first corner of `R' and ending at the
-height of the second corner.
-
-   The optional final argument, which defaults to 1, scales the
-arrowheads in a vector field, and scales the (constant) length of field
-elements for slope and dart fields. The sample files `layout2.xp',
-`lorenz.xp', `slopefield.xp', and `vfield.xp' illustrate usage.
-
-   In each field-plotting command, the domain argument may be replaced
-by two points, representing corners of a coordinate rectangle, and two
-integers, the number of grid intervals in the selected coordinate
-directions. Only planar slices of a vector field can be plotted using
-the alternative syntax.  
-
-
-
-`ePiX' provides limited features for spherical and hyperbolic geometry:
-the ability to draw lines in the half-plane and Poincar\'e disk models
-of the hyperbolic plane, and to draw latitudes, longitudes, great
-circle arcs, spherical triangles, regular polyhedra, and parametrized
-curves on a sphere.
-
-   Hyperbolic line segments are specified by their endpoints in the
-upper half space or ball (Poincar\'e) models.  In each case there is no
-output if either endpoint lies outside the model.  
-
-  hyperbolic_line(p, q);
-  disk_line(p, q);
- For compatibility with 2-dimensional hyperbolic space, the half-space
-model is the set \(x_1,x_2,x_3)\mid x_2>0\.
-
-   A `frame' determines geographical coordinates on a `Sphere': the
-first element points toward longitude 0 on the equator, the third
-element points to the north pole.  A latitude line depends on a
-`Sphere', a `frame', the numerical latitude, and a range of longitudes.
-A longitude line is described similarly.  
-
-  latitude(lat, long_min, long_max, Sphere S, frame coords);
-  longitude(lngtd, lat_min, lat_max, Sphere S, frame coords);
- By default, `coords' is the standard `frame' and `S' is the unit
-sphere. These commands draw only the portion of the curve that is
-visible from the current viewpoint. The function `back_latitude' draws
-the invisible portion of a latitude line.
-
-   Spherical arcs and triangles are described by their endpoints. Only
-the direction vector from the center of the sphere to an endpoint is
-significant; if a sphere is scaled or moved, the same function call
-will draw the corresponding object on the new sphere.
-
-   The following draw the visible (front) portions of great circle arcs: 
-
-  front_arc(p1, p2, S);  // short arc on S from p1 to p2
-  front_arc2(p1, p2, S); // arc from p1 to -p1 through p2
-  front_line(p1, p2, S); // great circle through p1 and p2
- Triangles and regular (Platonic) polyhedra are provided. The sample
-file `sample/polyhedra.xp' illustrates usage.  
-
-  front_triangle(p1, p2, p3, S); // spherical triangle
-  front_tetra(S, coords);  // regular tetrahedron
-  front_cube(S, coords);   //    hexahedron
-  front_octa(S, coords);   //    octahedron
-  front_dodeca(S, coords); //    dodecahedron
-  front_icosa(S, coords);  //    icosahedron
- Each function has a `back' version, which draws the hidden portion.
-The tetrahedron, cube, and octahedron are (up to scale) inscribed in
-the cube of side length 2 centered at the origin whose sides are
-parallel to `frame'. The point (1,1,1) is a vertex of the tetrahedron.
-
-   Up to scale, the icosahedron's vertices lie on the golden rectangle
-with vertices (\pm\gamma,0,\pm1) and its images under cyclic
-permutation of coordinates. The dodecahedron is dual to the icosahedron.
-
-
-
-Parametrized paths on a `Sphere S' (by default the unit sphere) can be
-specified either by radial projection of a `P'-valued curve, or by
-stereographic projection of a plane curve given as a pair of
-`double'-valued functions: 
-
-  frontplot_R(phi, t_min, t_max, n, [S]);    // radial
-  frontplot_N(f1, f2, t_min, t_max, n, [S]); // from north pole
-  frontplot_S(f1, f2, t_min, t_max, n, [S]); // from south pole
- Attempts to perform radial projection on a path through the origin
-will generate division-by-zero errors. Stereographic projection maps
-the equatorial plane \x_3=0\ to the unit sphere by projection from the
-corresponding pole: N=(0,0,1), S=(0,0,-1).
-
-   Each spherical plot command has a `back' version that prints only
-the portion of the path invisible from the current viewpoint.  Because
-of the way `ePiX' layers output, it is generally best to put hidden
-portions of the input before visible portions, with line width and/or
-style that suggests hidden lines.
-
-
-
-Files of numerical data can be created, manipulated, analyzed, plotted
-(paths, scatter plots, and histograms), read, and written.  The format
-for a data file is one or more floating-point numbers per line, with
-the same number of entries per line. Anything that appears on a line
-after the `LaTeX' comment character `\%' is a comment.
-
-   `ePiX' provides two `plot' commands for file data. The first
-facilitates plotting selected columns; the second simplifies plotting
-the first two columns with one or both scales logarithmic. Either form
-can be used to plot selected columns logarithmically.
-
-   The general commands read numbers from two or three columns of a
-specified file, pass them as arguments to a `P'-valued function `F',
-and plot the resulting points: 
-
-  plot("filename", STYLE, [i_1], [i_2], [i_3], [F]);
-  plot("filename", STYLE, F, [i_1], [i_2], [i_3]);
- The first argument is the name of the data file. The `STYLE' may be
-`PATH', which joins the points in the order they appear, or any of the
-marker types in Table *Note table:marker::, .  The integers i_k specify
-columns from which to extract data; these default, respectively, to the
-first column, second column, and null (a column of zeroes). If the
-"coordinate system" `F' is omitted in the first command, it defaults to
-the Cartesian point constructor. The function `F' is mandatory in the
-second form; useful choices include `log_log', `log_lin', and
-`lin_log', which plot the corresponding coordinate logarithmically.
-
-
-
-For more elaborate analysis, the `data_file' class presents an
-interface to a file as an ordered list of columns. There are two
-general ways to create a `data_file': read in an external file, or
-generate data (up to three columns) using specified `double'-valued
-functions. In the constructors below, each function `fi' is a
-`double'-valued function of one variable.  
-
-  data_file DF("my_data"); // read data from disk file
-  data_file DF(f1, t_min, t_max, num_pts); // values of f1
-  data_file DF(f1, f2, t_min, t_max, num_pts);
-  data_file DF(f1, f2, f3, t_min, t_max, num_pts);
-  data_file DF(3);  // create empty data_file with 3 columns
-  DF.read("file1"); // read a disk file
-
-   Columns of a `data_file' can be transformed by a user-specified
-function, averaged, correlated, extracted (for use by other code),
-scatter plotted, and written to a disk file at specified precision.
-Below, the function `f' is a `double'-valued function of one variable
-and `F' is a `P'-valued function of two or three variables, whose
-components are written back to the selected columns.  
-
-  DF.transform(f, i);    // apply f to selected column(s)
-  DF.transform(F, i=1, j=2);
-  DF.transform(F, i, j, k);
- Basic statistical operations on columns are provided.  
-
-  DF.dot(i,j);        // dot product of columns i, j
-  DF.avg(i);          // mean of column i
-  DF.var(i);          // population variance
-  DF.covar(i,j);      // covariance
-  DF.regression(i,j); // plot regression line
- A `data_file' is scatter plotted using syntax as described above.  %
-The output is cropped automatically to the bounding box.  
-
-  DF.plot(STYLE, [i1], [i2], [i3], [F]);
-  DF.plot(STYLE, F, [i1], [i2], [i3]);
- Histograms and bar charts are described below.
-
-   A `data_file' can be written to a disk file as raw data, or in
-specified format. Below, `fmt' denotes a `string'-valued formatting
-function of two variables and `myfile' is the name of the disk file to
-be written.  
-
-  DF.precision(4);    // set to 4 significant figures
-  DF.write("myfile"); // write as tab-separated columns
-  DF.write("myfile", fmt, [i1], [i2]); // apply fmt to cols
- A column can be extracted as a `C++' `vector' for use by another
-function.  
-
-  DF.column(i);    // i-th column
-  DF.column(f, i); // i-th column, transformed by f
-
-
-
-`ePiX' provides a `data_mask' class for culling data from a file
-according to the values in a specified column, and a `data_bins' class
-for sorting data by value.
-
-   A `data_mask' consists of an interval of numbers and a "filter"
-function. The (closed, open, or half-open) interval is given as a
-string in standard mathematical notation, or by its endpoints (for a
-closed interval).  The filter is a `double'-valued function of
-`double', by default the identity, f(x)=x.  
-
-  data_mask dm("[a, b]", [f]);
-  data_mask dm(a, b, [f]);
- A `data_mask' "passes" inputs x if f(x) lies in the interval. The
-member function `reverse()' inverts this logical test.
-
-   The `data_file' class has `prune' functions to cull rows for which a
-specified column's entry satisfies a `data_mask''s criterion.  
-
-  DF.prune(dm, i);   // remove row if i-th column entry fails
-  DF.prune(a, b, i); // remove row if i-th column outside [a,b]
-
-   A `data_bins' object models an interval divided at specified
-locations into "bins", not necessarily of equal length. Numerical data
-is read in and the number of points in each bin counted. The lifetime
-of a `data_bins' object has two stages. First, "cuts" (endpoints of
-subintervals) are added. Then, once data is read, the cuts are "locked"
-and cannot subsequently be changed.  
-
-  // [xmin, xmax] divided into n equal intervals, 1 by default
-  data_bins db(xmin, xmax, [n]);
-  db.cut(x);  // add a cut at x (if x is in bounds)
-  db.read(vector<double>); // read data, lock bins
-
-   A `data_bins' object can be plotted as a histogram (rectangles'
-_area_ is proportional to the bin population), bar chart (rectangles'
-_height_ is proportional to the bin population), or spline
-interpolation of a bar chart.  
-
-  db.histogram(c=1);  // c = vertical scale factor
-  db.bar_chart(c=1);
-  db.plot(c=1);
- By default (`c=1'), the height of a bar chart rectangle is the
-fraction of the total population contained in the bin; thus, the height
-is always between 0 and 1. For a histogram, the height of a rectangle
-is the fraction of the population per horizontal unit in the bin; thus,
-the total area over an interval [a,b] does not depend on how [a,b] has
-been subdivided. The sample files `dataplot.xp' and `histogram.xp'
-illustrate use.
-
-   Statistical convention dictates cuts be chosen distinctly from data
-values; that is, values should all fall strictly within a bin, not at a
-boundary point. With large, unknown data sets, this convention may be
-difficult to uphold. `ePiX' attempts to handle anomalous data
-intelligently, by keeping counts of values "out-of-range" or "on-cut".
-
-   In detail, if x<a or x>b is a data value, it is counted as
-out-of-range and does not contribute to the histogram population. If
-x=a or x=b, the value counts as both out-of-range and on-cut but is
-added to the population of the lowest or highest bin, respectively. Any
-other cut appearing as a data input is flagged as on-cut, and
-increments the population of each adjacent bin by one-half. When a
-histogram or bar chart is written, `ePiX' prints a warning message
-summarizing the number of anomalous data seen.
-
-
-
-Simple horizontal and vertical error bars are provided.  The final
-(optional) argument is the true height or width (respectively) in pt.  
-
-  h_error_bar(P location, double error, <mark type>, ht=6);
-  v_error_bar(P location, double error, <mark type>, wd=6);
-
-   To create more complex elements, such as asymmetric bars, whisker
-plots, labeled error bars, and the like, write a custom function using
-true-size drawing, see page *Note truesize::. For example, a fillable,
-labeled, asymmetric, vertical rectangular error bar can be implemented
-(entirely in `ePiX') like this:
-
-  void error_bar(P loc, double lo, double hi, P offset,
-                 std::string text, align, double wd=6)
-  {
-    const double width(pt_to_screen(0.5*wd)); // converts to 3pt
-    rect(loc - P(width, lo), loc + P(width, hi));
-    line(loc - P(width,  0), loc + P(width,  0));
-    label(loc + P(width, 0), offset, text, align);
-  }
- For stylistic uniformity, functions such as this should be put into a
-library and used systematically. Section *Note section:extensions::,
-outlines the process of writing, compiling, and using a custom library.  
-
-
-
-A `legend' systematically labels different parts of a plot by
-associating visual "keys" with explanatory text. This tends to be most
-useful for plots containing several distinct but conceptually related
-graphs requiring contrast.
-
-   Visually, a `legend' is represented as an aligned list of rows, each
-containing a box (the key), a gap (the label skip), and some text.
-These rows are printed in a (usually large) masked label. By default,
-keys are `12pt' squares bordered in black, the label skip is `6pt', the
-background is white, and the border is plain black. These attributes
-are controlled (simultaneously for all items) with member functions.
-Parameters of type `double' represent lengths in `pt'.  
-
-  legend L;
-  L.backing(color);          // set background
-  L.border(color, [double]); // set border color [and width]
-  L.border(double);          // border width
-
-  L.item_border(color, [double]);
-  L.item_border(double);     // same, for item borders
-
-  L.label_skip(double);
-  L.key_size(double);
-
-
-
-There are three types of legend key, representing filled regions,
-paths, and markers. Fill and path keys get their visual attributes from
-the current drawing state. A mark key must be told the marker type.
-Each is created by specifying the item text.  
-
-  L.fill_item(text);
-  L.path_item(text);
-  L.mark_item(<mark type>, text);
- Keys in the printed legend appear in the same order they are created
-in the input file.
-
-
-
-Normally, a `legend' is defined near the start of a file, and an item
-is added at the point in the file where the corresponding object or
-plot is drawn, so that the item receives the correct attributes. A
-`legend' is placed into the figure with the `draw' function. The
-arguments have the same meaning as for ordinary `label's.  
-
-  L.draw(P location, P offset, align);
- All three arguments are mandatory.  "Global" `legend' settings
-(border, backing, etc.) may be changed anywhere between the `legend''s
-creation and `draw' function. The sample file `legend.xp' revisits the
-example on page *Note taylor_poly::, including a trig-labeled axis and a
-legend. The file `shadeplot.xp' contains filled keys, and `dataplot.xp'
-contains a `legend' with items of mixed type.
-
-
-File: epix.info,  Node: More About `C++',  Next: Attribute Quick Reference,  Prev: Creating and Drawing Objects,  Up: Reference Manual
-
-3.7 More About `C++'
-====================
-
-A textbook or similarly detailed reference is essential for serious
-study of `C' or `C++'. _The `C' Programming Language_, second edition,
-by Kernighan and Ritchie `KnR', is an excellent, manageable resource
-for the basics of procedural programming. _C++ Primer Plus_, by Stephen
-Prata `Prata', clearly lays out the extensive details of `C++'.
-Marshall Cline's _`C++' FAQ Lite_ `Cline' engagingly discusses common
-points of confusion and furnishes tips on good design and programming.
-
-   `C++' is a powerful, complex language whose syntax is similar to that
-of `C', or to the scripting languages of Maple and Mathematica. An
-`ePiX' input file is source code for a `C++' program that writes a
-`LaTeX' picture as output.  `ePiX' may be viewed as an extension to
-`C++'; in the same way that `LaTeX' furnishes a high-level interface to
-`TeX', `ePiX' provides a high-level bridge between the computational
-power of `C++' and the `LaTeX' `picture' environment.
-
-   Like all high-level programming languages, `C++' provides variables,
-functions, and control structures. Variables hold pieces of data such
-as numerical values and geometric locations, while functions operate on
-data. A control structure, such as a loop or conditional statement,
-affects the program's course according to the program's current state.
-A source file is composed primarily of "statements", which perform
-actions ranging from defining variables and functions to setting figure
-attributes, performing calculations, and writing objects to the output
-file.
-
-
-
-Names of variables and functions may consist (only) of letters, digits,
-and the underscore character. The first character of a name must not be
-a digit, and the language standard reserves names starting with
-underscore for library authors. Names are case-sensitive, but it's
-usually a bad idea to use a single name capitalized and uncapitalized
-in a single file. Numerous capitalization conventions are used
-informally; this document uses uncapitalized words separated by
-underscores for variables and functions, and occasionally uses all
-capitals for constants. As with names of `LaTeX' macros, primary
-considerations are clarity (of meaning), readability, and consistency.  
-
-   Every variable in `C++' has a "type", such as integer (`int'),
-double-precision floating point (`double'), or Boolean (`bool', true or
-false).  `ePiX' provides additional types, the most common of which is
-`P', for point. The construct `P(x,y,z)' creates (x,y,z), while
-`P(x,y)' gives (x,y,0), which is effectively the pair (x,y). A variable
-is defined by giving its type, its name, and an initializing expression.
-
-   In `C' and `C++', a _pointer_ variable holds the memory address of
-another variable. Pointers are useful for manipulating (possibly large)
-data structures through "handles" of fixed small size. `C++' also
-provides _references_, which bind an additional name to an existing
-object and allow the object to be manipulated through this alias. The
-statements
-
-  double  x=1;   // ordinary variable definition
-  double& rx=x;  // bind a reference, signified by &
- define a variable `x' having the value 1, and bind a reference
-variable `rx' to it. As long as `rx' exists, it refers to `x'. If the
-value of `x' changes, the value of `rx' does as well. Conversely, the
-value of `x' can be altered by assigning to `rx'. However, `rx' is the
-size of a pointer, regardless of the size of `x', so `rx' can be passed
-efficiently in a function call.
-
-
-
-In a programming language, the term "function" refers to a block of
-code that is executable by name.  A `C++' function takes a list of
-"arguments", and has a "return value".  This information, together with
-the function's name, must be provided when a function is defined.  A
-function may not be defined inside another function. However, a
-function may call other functions (including itself) as part of its
-execution:
-
-  int factorial(unsigned int n)
-  {
-    if (n == 0) return 1;
-    else return n*factorial(n-1);
-  }
-
-   The special type `void' represents a "null type". A function that
-performs an action but does not return a value has return type `void'.
-A function that takes no arguments may be viewed as taking a single
-`void' argument.
-
-   Every `C++' program has a special function `main()', which is called
-by the operating system when the program is run. The arguments of
-`main()' are command-line arguments, and the return type is an integer
-that signals success or failure. User-specified functions must be
-defined before the call to `main()' or in a separately-compiled file.
-
-   Functions in `C++' may be as simple as an algebraic formula or as
-complex as an arbitrary algorithm. Greatest common divisors, finite
-sums, numerical derivatives and integrals, solutions of differential
-equations, recursively generated fractal curves, and curves of best fit
-are a few applications in `ePiX'. Several sample files contain
-user-level algorithms, which do not require knowledge of `ePiX''s
-internal data structures. The source file `functions.cc' contains
-simple functions defined by algorithms, and `functions.h' illustrates
-the use of `C++' templates. Other source files, such as `plots.cc', may
-be consulted for Simpson's rule, Euler's method, and the like.
-
-
-
-`C++' knows several familiar mathematical functions by name:
-
-  sqrt   exp   log   log10   ceil   floor   fabs
- (`fabs' is the absolute value for a floating-point argument.)  `ePiX'
-provides trig and inverse trig functions sensitive to angular mode: 
-
-  Cos       Sin       Tan
-  Sec       Csc       Cot
-  Acos      Asin      Atan
- The inverse functions are principle branches.
-
-   The function `pow(x,y)' returns x^y when x>0, and `atan2(y,x)' (N.B.
-argument order) returns Arg(x+iy)\in(-\pi,\pi], the principle branch of
-arg.  `C++' knows many constants to 20 decimal places, such as `M_PI',
-`M_PI_2', and `M_E' for \pi, \pi/2, and e respectively.  `ePiX' defines
-a few additional functions: 
-
-  sgn   zero   sinx   cb
- `sgn' is the signum function; `zero' is the constant function; `sinx'
-is the function x\mapsto \sin(x)/x with the discontinuity removed; `cb'
-(for "Charlie Brown") is the period-2 extension of the absolute value
-function on [-1,1].
-
-   The GNU `C++' library defines other functions, including inverse
-hyperbolic functions (`acosh', etc.), `log' and `exp' with base 2, 10,
-or arbitrary b (`log2', etc.), the error and gamma functions (`erf' and
-`tgamma' [sic], respectively), and Bessel functions of first and second
-kind: `j0', `j1', `y0', etc. Use, e.g., `jn(5, )' to get higher
-indices.  The GNU `C' library reference manual `GNUC' describes these
-and other functions in detail.
-
-   Functions may be used in subsequent definitions, and functions of two
-(or more) variables are defined in direct analogy to functions of one
-variable:
-
-double f(double t) { return t*t*log(t*t); } // t^2 \ln(t^2)
-double g(double s, double t) { return exp(2*s)*Sin(t); }
- 
-
-
-
-Unlike `C', `C++' supports "object-oriented programming". In a
-nutshell, a _class_ is an abstraction in computer code of some concept,
-such as a point, a sphere, a mapping that can be plotted, or a camera.
-Classes allow a programmer to separate an object's _interface_ (the set
-of meaningful operations) from its _implementation_ (the data
-structures and algorithms that realize the interface).
-
-   A class implementation consists of _members_ (named data elements)
-and _member functions_ (functions that belong to the class and have
-free access to members).  `C++' classes enforce access permissions on
-their members, protecting data from being manipulated except as
-promised by the interface.
-
-   An ideal interface looks like a black box: It hides the
-implementation completely.  In order to cooperate, two classes need
-only know each other's interfaces. This separation of form and function
-modularizes a program, and facilitates debugging, code reuse, and
-overall maintainability, particularly in large programs.
-
-   In simple programming, classes may be treated like built-in types.
-Each class object has its own member functions, whose call syntax
-differs from standard function calls:
-
-  Circle C1(P(1,0), 1.5); // circle of given center and radius
-  C1.draw();              // member function Circle::draw();
- Naturally, this call draws the circle `C1'. Generally, a member
-function call consists of a class object's name, a period, and the name
-of the member function. Arguments, if any, go in the parentheses after
-the member function name, just as in a regular function call.
-
-   A few short paragraphs cannot do more than scratch the surface of
-classes and object-oriented programming. For more details, please
-consult a book, such as Prata `Prata' or Stroustrup `S', or Cline's
-on-line FAQ `Cline'.  
-
-
-
-`C' and `C++' are "call by value" languages. Variables are not passed
-to a function; instead a copy of the value is made, and the function
-operates only on the copy. Though this feature causes occasional
-inconvenience, it prevents an object from being altered unexpectedly by
-a function call in a different part of the program.  Calling by value
-helps localize the logic of a program, and circumvents easy-to-write
-but extremely hard-to-find bugs.
-
-   In `C++', a function may accept reference arguments. Passing an
-object by reference grants the calling function access to the object
-itself, not to a copy. There are two common applications: The object is
-a large data structure for which copying is "expensive", or the
-function _needs_ to modify its arguments (e.g., a function `swap(x,y)'
-that exchanges the values of `x' and `y').
-
-   For the first situation, `C++' provides the `const' keyword, which
-ensures the function does not modify its arguments, but accepts a
-reference merely for efficiency. Any attempt to modify a `const'
-argument will be caught by the compiler. Most `ePiX' commands accept
-`const' reference arguments.
-
-   The ability to pass function arguments by reference is sometimes
-touted as a feature in `C++' texts. However, the technique circumvents
-the data encapsulation of calling by value, and should be avoided
-unless absolutely necessary. If a function merely "updates" the value
-of a variable, probably the variable should be of class type, and the
-update should be performed by a member function.
-
-   A function declaration must indicate that its arguments are
-references. The declarations below have the indicated idiomatic
-meanings.
-
-  class matrix;
-  double det(matrix); // call by value, perhaps inefficient
-  matrix& transpose(matrix&); // probably changes its argument
-  double trace(const matrix&); // does not change its argument
- Unlike pointer arguments, reference arguments impose no syntactic
-burden on the user. If `A' is a `matrix', then `transpose(A);' and
-`trace(A);' will compile. You need not declare explicit reference
-variables and pass those to the function.
-
-
-
-`C++' provides "overloading": Multiple functions can be given the same
-name, so long as the number and/or type of their arguments differ. (It
-is _not_ enough for the return types alone to differ.  The compiler
-must be able to select a function from its calling syntax.)  To the
-user, the appearance is that a single function intelligently handles
-multiple argument lists. Naturally, overloaded names should refer to
-functions that are conceptually related.  
-
-
-
-A `C++' statement ends with a semicolon. A collection of statements
-enclosed by curly braces is a "code block", and may be viewed as a
-single logical statement. Curly braces determine a "scope", inside
-which variable names may be re-used without ambiguity.  Function bodies
-are code blocks, as are the alternatives associated to control
-statements.  A variable defined between curly braces is said to be
-_local_ to the scope in which it is defined; its value cannot be used
-out of scope.  Variables should be declared in the smallest scope
-possible.
-
-   The compiler is not picky about spaces, tabs, and newlines, so an
-input file should be formatted to make local scopes visually apparent.
-`emacs' automatically indents code to reflect scope, though the default
-behavior does not please all users.  As with variable naming, clarity
-and consistency are paramount.
-
-
-
-A `C++' source file is compiled in multiple stages that occur
-transparently to the user. The first step, pre-processing, involves
-simple text replacement for file inclusion, macro expansion and
-conditional compilation. Next, the source is compiled and assembled:
-Human-readable language instructions are parsed, then represented in
-assembly language. Finally, the object files are linked: Function calls
-are resolved to hard-coded file offsets, possibly involving external
-library files, and the program instructions are packaged into an
-executable binary that the operating system can run.
-
-   Pre-processing is used much less in `C++' than in `C'; the language
-itself supports safer and more featureful alternatives to macros, such
-as `const' variables and inline functions. File inclusion and
-conditional compilation are the chief uses of the pre-processor. Lines
-of the form
-
-  #include <iostream>
-  #include "epix.h"
- cause the contents of a _header file_ to be read into the source file.
-A header file contains variable and function _declarations_, statements
-that specify types and names but do not define actual data.
-Declarations tell the compiler just enough to resolve expressions and
-function calls without knowing specific values or function definitions.
-
-   Conditional compilation is similar to conditional `LaTeX' code. For
-example, a file might produce either color or monochrome output as
-follows:
-
-#ifdef COLOR
-  ...  // code for generating color figure
-#endif /* COLOR */
-#ifndef COLOR
-  ...  // monochrome code
-#endif /* undef COLOR */
- The "compiler symbol" `COLOR' is an ordinary `C++' name. To control
-compilation, either put a `\#define COLOR' line in the file, or
-(better) supply the flag on the command line: \\   epix -DCOLOR
-<file.xp> \\ Every `\#ifdef' must have a matching `\#endif'. Commenting
-the `\#endif' is a good habit; in a realistic file, the start and end
-of a conditional block may be separated by more than one screen.
-
-
-
-As a programming language, `C++' provides certain features common to
-all languages (such as `LaTeX', MetaPost, Perl, Lisp\ldots) and adheres
-to rules of grammar. Salient differences between `LaTeX' and `C++'
-include:
-
-  1. Every `C++' statement and function call must end with a
-     semicolon. An omitted semicolon may result in a cryptic error
-     message from the compiler. Pre-processor directives, which start
-     with a `\#', do not end with a semicolon.
-
-  2. Backslash is an escape character in `C++':   
-       // Put label $y=\sin x$ at (2,1)
-       // Note single  ^ backslash in output
-       label(P(2,1), P(0,0), "$y=\\sin x$");
-       //       Double backslash ^^ in source
-
-  3. Variable and function names may contain letters (including
-     underscore) and digits _only_, are case sensitive, and must
-     begin with a letter.
-
-  4. Variables in `C++' must have a declared _type_, such as   `int'
-     (integer) or `double' (double-precision floating   point). If a
-     variable has global scope and its value does not   change, the
-     definition should probably come in the preamble or at   the
-     beginning of `main'. Local variables should be defined in   the
-     smallest possible scope. Unlike `C', `C++' allows variables to be
-     defined where they first appear.
-
-  5. `C++' requires explicit use of `*' to denote multiplication;
-     juxtaposition is not enough. `C++' does not support the use of   ^
-     for exponentiation, e.g., t^2 is invalid. Instead,   use `t*t' or
-     `pow(t,2)'.
-
-  6. `C++' has single- and multi-line comments. Everything between a
-     double slash and the next newline is ignored, while the strings
-     /* and */ delimit multi-line comments. A single-line   comment may
-     appear within a multi-line comment, but the compiler   does not
-     nest multi-line comments.    
-
-
-   Between them, `C' and `C++' have about 100 reserved keywords which
-cannot be used as function or variable names.  
-
-
-File: epix.info,  Node: Attribute Quick Reference,  Prev: More About `C++',  Up: Reference Manual
-
-3.8 Attribute Quick Reference
-=============================
-
-In the body of an input file, the "drawing state" determines the
-figure's appearance. Attributes are declarations, set by commands that
-accept arguments of the stated type.
-
-   A `len' argument is a double-quoted string containing a number and a
-two-letter `LaTeX' length unit, such as `"1.5pt"' or `"6cm"'. A `color'
-argument is a named primary (`Red()', `Cyan()', `White()', etc.), a
-`Color' specified by densities (`RGB(...)', `CMYK(...)', etc.), or a
-`Color' object. Using `Neutral()' as a `Color' argument generally turns
-off the corresponding attribute.
-
-   * Angular mode: `radians()', `degrees()', or   `revolutions()'.
-
-     The angular mode affects all trigonometric operations, including
-     camera rotations, the drawing of arcs and ellipses, polar plotting,
-      label angle, and the trig functions themselves. Angle-sensitive
-     trig   functions are capitalized, e.g., `Cos', `Tan'.
-
-   * Fill style: `fill(color)', `fill(bool)',   `nofill()'.
-
-   * Path style:
-
-        * Width: `plain()', `bold()', `bbold()',     `pen(len)'.
-
-        * Line style: `line_style(string)'. The argument is a
-          WYSIWYG sequence of dashes, spaces, and periods.
-          `dash_size(double)' and `dot_sep(double)' set the
-          (approximate) length in `pt' of the pattern.  The commands
-          `solid()', `dashed()', `dotted()' define     "standard"
-          defaults for brevity.
-
-        * Path color:     Paths can be drawn using _two_ pens, one atop
-          the other. When     the "base" pen is white (or the
-          background color) and wider than     the "line" pen, a path
-          masks parts of the figure it crosses. A     3-D effect may be
-          obtained by making the base pen a darker shade     than the
-          "line" pen.
-
-          `pen(color,[len])', `base(color,[len])'
-
-          Standard widths: `plain(color)', `bold(color)',
-          `bbold(color)'
-
-
-   * Text attributes:
-
-        * Color: `label_color(color)'
-
-        * Mask: `label_mask(color)', `label_pad(len)'
-
-        * Border: `label_border(color, [len])',
-          `label_border(len)'. The command `no_label_border()'
-          turns off label borders.
-
-        * Font size: `font_size(LaTeX size)', no argument means
-          `normalsize'.
-
-        * Font face: `font_face(LaTeX font)', two-letter font
-          selection string, default is `rm'.
-
-        * Rotation: `label_angle(double)'
-
-
-
-   Do not confuse `Color' constructors with the similarly-named
-(deprecated) lowercase attribute-setting commands, `rgb(r,g,b)',
-`cmyk(c,m,y,k)', `red(d)', etc. These commands affect text, paths, and
-filled regions. For example, the single command `red()' has the same
-effect as the three commands `pen(Red())', `fill(Red())', and
-`label_color(Red())'.
-
-
-File: epix.info,  Node: Advanced Topics,  Next: Software Freedom,  Prev: Reference Manual,  Up: Top
-
-4 Advanced Topics
-*****************
-
-This chapter covers _ad hoc_ tricks and open-ended techniques that
-require relatively more programming sophistication. You will almost
-surely need an external `C++' reference if you do not speak the
-language.
-
-* Menu:
-
-* Hidden Object Removal::
-* Extensions::
-* Programmer's Guide::
-
-
-File: epix.info,  Node: Hidden Object Removal,  Next: Extensions,  Prev: Advanced Topics,  Up: Advanced Topics
-
-4.1 Hidden Object Removal
-=========================
-
-`ePiX' writes the output file in the same order that objects appear in
-the input. The order is significant because PostScript builds a figure
-in layers: Objects are drawn over objects that come earlier in the
-file. Shaded polygons can be used to obtain surprisingly effective
-hidden object removal in surface meshes. This section describes the
-data structures defined in the source files `surface.*'.
-
-   The basic idea is to create a shaded polygon class that knows its
-approximate distance to the camera. For computational simplicity, a
-mesh "facet" is treated as a quadrilateral, located at the arithmetic
-mean of its vertices. A facet's boundary is created from a map and a
-domain by tracing a fine mesh rectangle counterclockwise.
-
-   To draw a parametrized surface, facets are stored in a `C++' vector,
-sorted in decreasing order of distance to the camera, and printed to
-the output file. If filling is active, the gray density of a facet
-depends on the cosine of the angle between the normal vector and the
-vector from the camera to the element.
-
-   This simple algorithm works surprisingly well when mesh elements
-intersect at most along complete edges. To incorporate line-like
-elements (e.g., coordinate axes, wire-mesh plots) with shaded surfaces,
-the best technique is often to order high-level scene elements
-manually, breaking up shaded surfaces (for example, with domain
-resizing or clipping) as necessary. The sample file `saddle.xp'
-illustrates possible techniques.
-
-   Shaded surfaces can be decorated with a bit of hackery. For example,
-the `facet::draw' function in `facet.cc' can be modified easily to draw
-line elements, tangents, or normal vectors along with the facet itself.
-The sample file `decorate.xp' contains a couple of ideas. (The
-decorations are activated by compiler flags; please consult the file
-itself for information on compiling.)  
-
-
-File: epix.info,  Node: Extensions,  Next: Programmer's Guide,  Prev: Hidden Object Removal,  Up: Advanced Topics
-
-4.2 Extensions
-==============
-
-Thanks to a suggestion of Andrew Sterian, `ePiX' is extensible. User
-extensions span a spectrum, from header files that require only basic
-knowledge of `C++' to separately compiled libraries that add
-substantial new features.  The structure of the source code is outlined
-in Section *Note section:programmers::, .
-
-
-
-A `C++' header file conventionally has suffix `.h', as in `myheader.h'.
-To use this custom header, put a line `\#include "myheader.h"' in your
-source file.
-
-   User definitions can be easily and robustly implemented with "inline
-functions". Inline functions are superficially similar to macros, but
-are far more safe and featureful (since they are handled by the
-compiler rather than by the pre-processor).  Examples are
-
-  inline void Bold() { pen(1.6); }
-  inline void purple() { rgb(0.5, 0, 0.7); }
-  inline void draw_square(double s) { rect(P(-s,-s),P(s,s)); }
-  inline double cube(double x) { return pow(x,3); // x^3 }
- The keyword `void' signifies a function that does not return a value,
-or (when used as an implicit parameter) a function that does not accept
-arguments. Inline function definitions are syntactically identical to
-ordinary function definitions, but _must_ occur in a header file or in
-the source file where they are used. The examples above might be used
-in an input file as follows:
-
-  Bold();
-  draw_square(cube(1.25));
-
-
-
-The next few sections outline the creation of a "static library" on
-GNU/Linux, and explain how to incorporate custom features at runtime.
-The extensively-commented sample files `std_F.cc' and `std_F.h'
-illustrate the techniques described below, and may be used for guidance
-and experimentation.
-
-   A small library is usually written as a _header_ file, which
-contains class and function declarations (also called "prototypes"),
-and a _source_ file, which contains the actual code. Conventionally
-(under *nix), these files have extension `.h' and `.cc' respectively.
-Header and source files may "include" other header files, to
-incorporate additional functionality.
-
-/* my_code.h */
-#ifndef MY_CODE
-#define MY_CODE
-#include <cmath>   // standard library math header
-#include "epix.h"  // ePiX header
-using ePiX::P;
-
-namespace Mine {   // to avoid name conflicts
-  // functions for special relativity
-  double lorentz_norm(const P&);
-  bool   spacelike(const P&);
-} // end of namespace
-#endif /* MY_CODE */
- This file exhibits two "safety features". The three `MY_CODE' lines
-prevent the file from being included multiple times. In a file of this
-size, inclusion protection is overkill, but as your code base grows and
-the number of header files increases, this protection is essential.
-Second, the header introduces a "Mine" namespace. Inside this
-namespace, two functions are declared as prototypes, giving the
-function's return type, name, and argument type(s). A header file
-should be commented fairly liberally, so that a year or two from now
-you'll be able to decipher the file's contents.  For a longer file,
-version and contact information, an overall comment describing the
-file's features, and license information are appropriate.
-
-   Next, the corresponding source file; definitions are also placed into
-the namespace, and must match their prototypes from the header file
-exactly.
-
-/* my_code.cc */
-#include "my_code.h"
-using namespace ePiX;
-
-namespace Mine {
-  double lorentz_norm(const P& arg)
-  {
-    double x(arg.x1()), y(arg.x2()), z(arg.x3()); // extract coords
-    return (y-x)*(y+x) + z*z; // -x^2 + y^2 + z^2
-  }
-  bool spacelike(const P& arg)
-  {
-    return (lorentz_norm(arg) > 0); // true if inequality is
-  }
-} // end of namespace
- Copies of these files are included with the source code so you can
-experiment with them. Next, the source file must be "compiled",
-"archived", and "indexed". In the commands below, the percent sign is
-the prompt.
-
-% g++ -c my_code.cc
-% ar -ru libcustom.a my_code.o
-% ranlib libcustom.a
- Please see your system documentation for details on command options
-and what each step does. For linking (below), the name of the library
-file must begin "lib" and have the extension `.a'. Once these steps are
-successfully completed, put the library `libcustom.a' and header file
-`my_code.h' in your project directory. You're ready to use the code in
-an `ePiX' figure.
-
-
-
-The script `epix' allows input files to be linked with external
-libraries at run time, when the input file is compiled into a temporary
-executable.
-
-   `epix' recognizes command line options and passes them verbatim to
-the compiler. The most commonly used options are those of the form
-
-   -I<include>     -L<libdir>     -l<lib>
- For example, to link `figure.xp' against `mylibs/libcustom.a', run the
-command
-
-   epix -Lmylibs -lcustom figure
- The options `-I. -L.' tell the compiler to look in the current
-directory for header and library files.  Compiler options may appear in
-any order, but must come before the name of the input file(s).
-
-   Compiler options may be placed in the configuration file
-`\$HOME/.epixrc', with syntax as above. A line in the config file that
-contains a pound sign (`\#') is a comment, no matter where in the line
-the `\#' appears. If any non-comment line fails to start with a dash,
-the rest of the file is silently discarded.  Command-line options are
-read before the config file.
-
-
-
-The script `epix' links by default against the `C' math library
-`libm.a' and the `ePiX' library `libepix.a'.  The command option
-`--no-defaults' clears the header and include paths and removes
-`libepix.a' from the link list. The script may therefore be used with
-multiple versions of `ePiX', a potentially useful feature if you
-regularly need to compile old source files, or simply prefer the syntax
-of an older version.
-
-   To install and use (say) Version 1.0.0, build the package according
-to its `INSTALL' instructions, but _do not use the makefile   to
-install_. Instead, manually install the header and library only, using
-their version number:
-
-# install -m 644 epix.h /usr/local/include/epix-1.0.h
-# install -m 644 libepix.a /usr/local/lib/libepix-1.0.a
- A non-system directory may be used instead of `/usr/local'.  To use
-the old version, a source file must `include' the appropriate header
-file (which is identified by its version number).  To compile, issue a
-command such as
-
-epix --no-defaults -I/usr/local -L/usr/local -lepix-1.0 file.xp
-
-
-File: epix.info,  Node: Programmer's Guide,  Prev: Extensions,  Up: Advanced Topics
-
-4.3 Programmer's Guide
-======================
-
-This section briefly surveys `ePiX''s implementation, and is intended
-for (potential) programmers. The source code is divided into modules
-with small, well-defined responsibilities, but the user interface is
-mostly compatible with the syntax of Version 1.0. These constraints
-demanded a degree of implementation hiding. For example, the
-user-visible classes defined in `Color.h', `path.h', and `screen.h'
-contain only a pointer to the implementation class, and style data is
-hidden behind global commands.
-
-   Functionally, the code consists of the user interface; implementation
-class\-es comprising drawing attributes, spatial objects, screens and
-representations of their elements, and output; and miscellaneous
-utility functions. The headers in each group, and their contents, are
-described in Section *Note section:interface::, .
-
-   The user interface headers are assembled into a single file,
-`epix.h', and installed in `/usr/local/include' by default. In normal
-use, the shell scripts read only the user interface header.  The
-individual headers, including the components of `epix.h', are installed
-in `/usr/local/include/epix'. These are provided for authors of
-external libraries, who may need access to implementation details.
-
-
-
-`ePiX' harnesses the computational power of `C++' to the typographical
-capabilities of `LaTeX'. Consequently, `ePiX' should be viewed in part
-as a framework for expressing numerical data visually.
-
-   In the course of your work, you may develop specialized code filling
-a gap in `ePiX''s functionality. If your code seems likely to be of
-interest to other users, please consider bundling it as an external
-package and notifying the `ePiX' community so your work can be linked
-from the project pages and distributed to interested users.
-
-   There are no formal requirements for external packages, but in the
-interest of uniformity contributed code should follow the GNU Coding
-Standards `GNUCoding'. At a minimum, an external package should build
-with the standard `./configure; make; make install' commands, and the
-`configure' script should accept an option `--with-epix' for the user
-to specify a non-default `ePiX' install directory.
-
-   If an external package builds a static library, it should provide a
-single header containing all the package's entry points, and enclose
-its interface in a namespace. Entry points should not collide with
-`ePiX' functions. Naming the package "`epix-<...>'" is a good idea, but
-not essential. For example, a package providing textual nodes and
-diagram layout might be named `epix-nodes'.  Input files would use the
-package with the lines
-
-  #include "epix-nodes.h"
-  using namespace ePiX-nodes;
- and be compiled with
-
-  epix -lepix-nodes <file>
-
-   The user and internal interfaces of `ePiX'-1.2 are not likely to
-change. Still, it's prudent to rely only on the user interface in
-contributed code whenever possible. Doing so also simplifies your work
-as an author; your library can simply `include' the user header file,
-and deal only with high-level objects and drawing attributes.
-
-
-
-These files (in order) comprise the global header `epix.h'.
-
-   `enums.h'  Marker, alignment, Riemann integral, and vector field
-types.
-
-   `length.h'  Physical lengths, conceptually a number and two-letter
-`LaTeX' length unit.
-
-   `interval.h'  Closed, open, and half-open interval ranges for data
-culling.
-
-   `triples.h' The `P'  class.
-
-   `functions.h'  Angle-sensitive trig functions, miscellaneous utility
-functions, the `Deriv' and `Integral' classes.
-
-   `pairs.h'  Screen locations and displacements, with complex
-arithmetic operations.
-
-   `Color.h'  The Color class interface, named primaries and
-constructors.
-
-   `state.h'  Angle mode; clipping and cropping; label styles; filling;
-arrow head style; dot and tick sizes, dash length; line style; line and
-base pen attributes; color-setting commands.
-
-   `frame.h'  Orthonormal bases.
-
-   `domain.h'  Coordinate boxes for function plotting.
-
-   `camera.h'  The camera.
-
-   `screen.h'  The screen class.
-
-   `picture.h'  Dimension-setting, offset, layout, decoration, verbatim
-text, and output format commands.
-
-   `markers.h'  Point markers, axis labels, and coordinate axes.
-
-   `axis.h'  Coordinate axes and labels in various styles.
-
-   `legend.h'  Plot legends.
-
-   `path.h'  The path class.
-
-   `curves.h'  Polygons, arrows, ellipses, arcs, splines, coordinate
-grids, and recursive fractal curves.
-
-   `circle.h' The `Circle'  shape object class.
-
-   `plane.h' The `Plane'  shape object class.
-
-   `segment.h' The `Segment'  shape object class.
-
-   `sphere.h' The `Sphere'  shape object class.
-
-   `intersections.h'  Shape object intersection operators.
-
-   `plots.h'  Plotting commands.
-
-   `surface.h'  Shaded surface plots.
-
-   `data_mask.h'  Helper class for data pruning.
-
-   `data_file.h'  Class for storing and representing data.
-
-   `data_bins.h'  Class for sorting and counting data.
-
-   `geometry.h'  Latitudes and longitudes; spherical plotting, arcs,
-polygons, and polyhedra; hyperbolic arcs.
-
-
-
-`Color_Base.h'  The Color implementation interface.
-
-   `Color_CMY.h'  The CMY color model.
-
-   `Color_CMYK.h'  The CMYK color model.
-
-   `Color_Gray.h'  The Gray color model.
-
-   `Color_Neutral.h'  Each color class has a "Neutral" member that
-converts colors to that model by filtering. This file defines the
-unique "model-less" Neutral color for which filtering performs no
-action.
-
-   `Color_RGB.h'  The RGB color model.
-
-   `Color_Sep.h'  Classes for CMYK separation.
-
-   `active_screen.h'  Simple manipulator for the active screen.
-
-   `picture_data.h' Picture implementation: two `screen' s
-(representing the `canvas' and the output page), true dimensions and
-offsets, pointer to output format, list of colors, and lists of
-verbatim text to write before and after printing the `picture'
-environment in the output file. For simplicity, the `screen's and
-dimensions are public; encapsulation from the user results from
-"hiding" this header.
-
-
-
-Declaration-style attributes are maintained with functions returning
-static references: `the_angle_style()', `the_arrowhead_style()',
-`the_label_style()', `the_mark_size()', `the_paint_style()', and
-`the_path_style()'. Each function is declared in the analogously-named
-header.
-
-   `angle_units.h' Angular modes: `radians' , `revolutions', and
-`degrees'.
-
-   `arrow_style.h'  Arrow head style data: width, ratio, and inset.
-
-   `label_style.h'  Text object style: Label and mask colors, padding,
-border color and width, alignment, font size, font face, and angle.
-
-   `marker_style.h'  Dot and tick sizes.
-
-   `paint_style.h'  Line and base pens, fill color.
-
-   `path_style.h'  Solid, dashed, dotted lines.
-
-   `pen_data.h'  The pen class.
-
-
-
-`arrow_data.h'  Arrow representation.
-
-   `facet.h'  Shaded surface elements.
-
-   `label_data.h'  Text (label and marker) objects.
-
-   `legend_item.h' Items for `legend' s.
-
-   `path_data.h'  Path implementation.
-
-   `spline.h'  The natural spline class.
-
-   `spline_data.h'  Templates for quadratic and cubic splines.
-
-
-
-Elements in a `screen' are represented polymorphically as "`tile's", of
-which there are six types: `glyph' (textual elements), `pen_arrow'
-(arrows), `pen_fill' (filled regions), `pen_line' (path-like elements),
-`verbatim' (raw text), and `legend_tile' (legends).
-
-   Border and background shape are dictated by the `screen_mask' class.
-The cropping algorithm assumes the contour of a screen mask is convex.
-
-   `affine.h'  Affine maps.
-
-   `cropping.h'  Screen mask cropping.
-
-   `glyph.h'  Markers and labels.
-
-   `legend_tile.h' Screen representation of a `legend' .
-
-   `mask_diamond.h'  Screen diamond mask.
-
-   `mask_ellipse.h'  Screen elliptical mask.
-
-   `mask_rectangle.h'  Screen rectangular mask.
-
-   `pen_arrow.h'  Arrows.
-
-   `pen_fill.h'  Filled regions.
-
-   `pen_line.h'  Paths.
-
-   `screen_data.h'  Screen implementation class.
-
-   `screen_mask.h'  Screen mask interface.
-
-   `tile.h'  Screen element interface.
-
-   `verbatim.h'  Text in output stream.
-
-
-
-Output is divided into a couple of high-level operations and several
-"atomic" low-level operations.  To create a new output format, one need
-only implement the `format' interface for the desired file type. Paths
-and filled regions may be implemented however the output type dictates.
-
-   `eepic.h'  eepic macros.
-
-   `fmt_template.h'  "skeleton" header for new output formats.
-
-   `format.h'  The output interface.
-
-   `pst.h'  PSTricks macros.
-
-   `tikz.h'  tikz macros.
-
-
-
-`Color_Utils.h'  Functions for setting color channel densities.
-
-   `clipping.h'  The clip box.
-
-   `constants.h'  Global constants: Line widths; dot, tick, and dash
-sizes; arrowhead parameters; miscellaneous numerical constants and
-internal parameters.
-
-   `crop_algorithms.h'  Path and loop clipping templates.
-
-   `deriv.h'  Finite difference template.
-
-   `edge_data.h'  Path element representation template.
-
-   `errors.h'  Warning and error messages.
-
-   `frac.h'  Rational numbers and operators.
-
-   `halfspace.h'  Halfspace cutting.
-
-   `hatching.h'  Filling regions in eepic.
-
-   `lens.h'  Camera lenses.
-
-   `map.h'  Wrappers for templated plotting.
-
-   `plot_algorithms.h'  Plotting templates.
-
-   `screen_crop.h'  Crop paths and loops.
-
-   `utils.h'  Truncation, date and time, line breaking.
-
-
-File: epix.info,  Node: Software Freedom,  Next: Acknowledgments,  Prev: Advanced Topics,  Up: Top
-
-Appendix A Software Freedom
-***************************
-
-Academics in general, and mathematicians in particular, depend on free
-exchange of information. We prove theorems or establish experimental
-results, write up formal accounts, place preprints on public file
-servers, and submit papers to peer-reviewed journals. If accepted, the
-results--data, techniques, methods of reasoning, citations, and
-conclusions--are published in print and become part of the public
-record, governed by copyright law. Libraries purchase journal
-subscriptions, but researchers and scholars may use ideas from the
-literature merely by giving appropriate citations in their own work.
-"Theft" arises from false claims of authorship.
-
-   Carried over to software, the academic process would guarantee rights
-similar to those provided by the GNU General Public License (GPL):
-
-   * (GPL 0) To run a program for any purpose.
-
-   * (GPL 1) To study how the program works, and adapt it to your
-     needs.
-
-   * (GPL 2) To redistribute copies of the program.
-
-   * (GPL 3) To improve the program, and release improvements to the
-     public, so that the whole community benefits.
-
-
-   In reality, attitudes toward software differ markedly. Most academics
-work on a proprietary platform, use proprietary software for research
-and teaching, and share information with colleagues and students in
-proprietary, even obfuscated, data formats.  Contrary to the academic
-ethic, proprietary software licenses restrict access to information:
-preventing users from learning how a program works internally ("reverse
-engineering"), limiting the number of users who may run a piece of
-software, and forbidding users from running (or sometimes even
-installing) a purchased copy on multiple machines.
-
-   Restrictions on use aside, if one cannot examine a program's source
-code, one cannot fully trust the output, any more than one can trust
-(for purposes of scientific publication) results of a commercial
-testing lab.
-
-   Consider a hypothetical future world in which scholarly results are
-disseminated like software. Instead of subscriptions, journals sell
-licenses granting readership to a specified number of individuals.
-Photocopying an article for a class or research seminar constitutes
-"piracy", though if the institution has purchased a sufficiently large
-site license the teacher or speaker may bring the physical volume to
-class and project the pages onto a screen.
-
-   Of course, reading an article is scarcely enlightening. Mathematics
-papers contain only the statements of theorems. Merely opening the
-journal binds the reader to a lengthy legal agreement, stating that
-theorems be used only for specific purposes and threatening serious
-legal consequences for attempting to discover the author's proofs.
-
-   The actions of a single student, employee, or faculty member can
-expose an institution to a costly "journal audit" from the Mathematical
-Society of America (MSA), with the institution responsible for legal
-costs if the audit reveals license violations anywhere in the
-organization.
-
-   Mathematicians who long for the Old Days when papers contained
-proofs and were shared freely are dismissed as idealistic cranks or
-labeled anti-business communists. Common knowledge asserts the obvious
-superiority of proprietary journals, and the necessity of licenses for
-keeping mathematicians gainfully employed.
-
-   Back in our world, some vendors have attempted to placate opponents
-of closed source with "shared source" licenses, under which one may
-sign a non-disclosure agreement and subsequently examine source code.
-In the future world analogy, a shared source agreement would allow
-journal licensees to sign an NDA, then see the proofs of theorems.
-Readers could thereby correct errors in proofs (benefitting the
-publisher by improving the reliability of the journal), but would be
-legally forbidden from using the ideas elsewhere (denying benefit to
-other mathematicians).
-
-   Legally and conceptually codifying software as a commodity ignores a
-fundamental reality: Like an idea or recipe, software can be copied
-without loss of the original. The perception of "theft" by copying
-arises from an artificial belief that software has an owner who must be
-monetarily compensated each time a person acquires a copy.  The nature
-of software does not enforce the "sale" model in the way services and
-physical commodities do. It therefore seems philosophically
-inappropriate to treat software as a commodity, and perilous to conform
-the legal system to the enforcement of such a model.
-
-   At its best, software enhances our productivity and creativity.
-Sharing software, like sharing ideas, benefits a larger number of
-people without detriment to existing users.  I hope this modest program
-is, in conjunction with the much larger efforts of others (especially
-Donald Knuth, Richard Stallman, and the many people who have
-contributed to the authorship of `LaTeX' and its packages), useful to
-you in your mathematical work.
-
-   Please visit the Free Software Foundation, at `http://www.fsf.org',
-to learn more about free software and how you can contribute to its
-development and adoption.  
-
-
-File: epix.info,  Node: Acknowledgments,  Next: Function Index,  Prev: Software Freedom,  Up: Top
-
-Appendix B Acknowledgments
-**************************
-
-`ePiX' is built on the work of many people (unfortunately, most of whom
-I am unaware). The following people have contributed, sometimes
-unknowingly but always generously:
-
-   *Infrastructure* Donald Knuth, Conrad Kwok, Leslie Lamport, Tim
-Morgan, Piet van Oostrum, Sunil Podar, Richard Stallman, Till Tantau,
-Herbert Voss, Timothy van Zandt
-
-   *Enhancements* Jay Belanger, Robin Blume-Kohout, Julian Gilbey,
-Marcus Hanwell, Yvon Henel, Svend Daugaard Pedersen, Andrew Sterian
-
-   *Porting and packaging* Julian Gilbey (Debian); Tsuguru Kato
-(FreeBSD); Markus Dittrich, Danny van Dyk, Christian Faulhammer,
-Olivier Fisette, Chris Gianelloni, Michael Hanselmann, Marcus Hanwell,
-David Holm, Peter Johanson, Patrick Kursawe, Tobias Scherbaum, Markus
-Ullmann (Gentoo); Guido Gonzato (RPM); Rene Rebe (T2)
-
-   *Debugging, advice, and other assistance* Jay Belanger, Felipe Paulo
-Guazzi Bergo, Karl Berry, Robin Blume-Kohout, Patrick Cousot, Stephen
-Gibson, Julian Gilbey, Dov Grobgeld, Bob Grover, Jim Hefferon, Jacques
-L'helgoual, Yvon Henel, Hartmut Henkel, Herng-Jeng Jou, Walter
-Kehowski, Kevin McCormick, Ross Moore, Thorsten Riess, Alan Sill, Neel
-Smith, Michael Somos, Andrew Sterian, Ryszard Tanas, Kai Trukenmueller,
-Torbjorn Vik, Wenguang Wang, Gabe Weaver, Mariusz Wodzicki
-
-
-File: epix.info,  Node: Function Index,  Next: Concept Index,  Prev: Acknowledgments,  Up: Top
-
-Function Index
-**************
-
-
-* Menu:
-
-* aarrow:                                Creating and Drawing Objects.
-                                                             (line  248)
-* Acos:                                  More About C++.     (line  112)
-* activate:                              Scene Attributes.   (line  161)
-* affine:                                Scene Attributes.   (line  271)
-* apply:                                 Scene Attributes.   (line  307)
-* arc:                                   Creating and Drawing Objects.
-                                                             (line  167)
-* arc_arrow:                             Creating and Drawing Objects.
-                                                             (line  248)
-* arc_measure:                           Creating and Drawing Objects.
-                                                             (line  193)
-* arrow:                                 Creating and Drawing Objects.
-                                                             (line  242)
-* arrow_inset:                           Creating and Drawing Objects.
-                                                             (line  235)
-* arrow_ratio:                           Creating and Drawing Objects.
-                                                             (line  235)
-* arrow_width:                           Creating and Drawing Objects.
-                                                             (line  235)
-* Asin:                                  More About C++.     (line  112)
-* Atan:                                  More About C++.     (line  112)
-* axis:                                  Creating and Drawing Objects.
-                                                             (line  275)
-* axis.align:                            Creating and Drawing Objects.
-                                                             (line  284)
-* axis.align_labels:                     Creating and Drawing Objects.
-                                                             (line  296)
-* axis.dec:                              Creating and Drawing Objects.
-                                                             (line  296)
-* axis.draw:                             Creating and Drawing Objects.
-                                                             (line  342)
-* axis.draw_labels:                      Creating and Drawing Objects.
-                                                             (line  342)
-* axis.draw_ticks:                       Creating and Drawing Objects.
-                                                             (line  342)
-* axis.frac:                             Creating and Drawing Objects.
-                                                             (line  296)
-* axis.label_rep:                        Creating and Drawing Objects.
-                                                             (line  307)
-* axis.precision:                        Creating and Drawing Objects.
-                                                             (line  296)
-* axis.sci:                              Creating and Drawing Objects.
-                                                             (line  296)
-* axis.subdivide:                        Creating and Drawing Objects.
-                                                             (line  284)
-* axis.tag:                              Creating and Drawing Objects.
-                                                             (line  323)
-* axis.tag235:                           Creating and Drawing Objects.
-                                                             (line  323)
-* axis.tags:                             Creating and Drawing Objects.
-                                                             (line  323)
-* axis.tick_ratio:                       Creating and Drawing Objects.
-                                                             (line  284)
-* axis.trig:                             Creating and Drawing Objects.
-                                                             (line  296)
-* axis.unmark:                           Creating and Drawing Objects.
-                                                             (line  296)
-* axis.untag:                            Creating and Drawing Objects.
-                                                             (line  323)
-* axis_break:                            Creating and Drawing Objects.
-                                                             (line  394)
-* back_arc:                              Creating and Drawing Objects.
-                                                             (line  851)
-* back_arc2:                             Creating and Drawing Objects.
-                                                             (line  851)
-* back_cube:                             Creating and Drawing Objects.
-                                                             (line  857)
-* back_dodeca:                           Creating and Drawing Objects.
-                                                             (line  857)
-* back_icosa:                            Creating and Drawing Objects.
-                                                             (line  857)
-* back_latitude:                         Creating and Drawing Objects.
-                                                             (line  837)
-* back_line:                             Creating and Drawing Objects.
-                                                             (line  851)
-* back_longitude:                        Creating and Drawing Objects.
-                                                             (line  837)
-* back_octa:                             Creating and Drawing Objects.
-                                                             (line  857)
-* back_tetra:                            Creating and Drawing Objects.
-                                                             (line  857)
-* back_triangle:                         Creating and Drawing Objects.
-                                                             (line  857)
-* backing:                               Scene Attributes.   (line  252)
-* backplot_N:                            Creating and Drawing Objects.
-                                                             (line  879)
-* backplot_R:                            Creating and Drawing Objects.
-                                                             (line  879)
-* backplot_S:                            Creating and Drawing Objects.
-                                                             (line  879)
-* bbold:                                 Drawing Attributes. (line   33)
-* bbox:                                  Drawing Attributes. (line  174)
-* begin:                                 File Structure.     (line   12)
-* Black:                                 Color.              (line   23)
-* Blue:                                  Color.              (line   23)
-* bold:                                  Drawing Attributes. (line   33)
-* border:                                Scene Attributes.   (line  252)
-* bottom_axis:                           Creating and Drawing Objects.
-                                                             (line  332)
-* bounding_box:                          Picture Size and Aspect Ratio.
-                                                             (line   24)
-* box:                                   Drawing Attributes. (line  174)
-* Camera.at:                             Scene Attributes.   (line   75)
-* Camera.clip_range:                     Scene Attributes.   (line   75)
-* Camera.focus:                          Scene Attributes.   (line   75)
-* Camera.look_at:                        Scene Attributes.   (line   75)
-* Camera.pan:                            Scene Attributes.   (line   75)
-* Camera.range:                          Scene Attributes.   (line   75)
-* Camera.roll:                           Scene Attributes.   (line   75)
-* Camera.tilt:                           Scene Attributes.   (line   75)
-* canvas:                                Scene Attributes.   (line  183)
-* cb:                                    More About C++.     (line  123)
-* circ:                                  Drawing Attributes. (line  174)
-* circle:                                Creating and Drawing Objects.
-                                                             (line  145)
-* Circle:                                Creating and Drawing Objects.
-                                                             (line   70)
-* cis:                                   Creating and Drawing Objects.
-                                                             (line   27)
-* clip_box:                              Scene Attributes.   (line  127)
-* clip_face:                             Scene Attributes.   (line  137)
-* clip_restore:                          Scene Attributes.   (line  137)
-* clip_slice:                            Scene Attributes.   (line  137)
-* clip_to:                               Scene Attributes.   (line  127)
-* CMY:                                   Color.              (line   29)
-* CMY_Black:                             Color.              (line   29)
-* CMY_White:                             Color.              (line   29)
-* cmyk:                                  Drawing Attributes. (line  210)
-* CMYK:                                  Color.              (line   29)
-* Color.alpha:                           Color.              (line   73)
-* Color.blend:                           Color.              (line   73)
-* Color.filter:                          Color.              (line   73)
-* Color.invert:                          Color.              (line   73)
-* Color.superpose:                       Color.              (line   73)
-* Cos:                                   More About C++.     (line  112)
-* Cot:                                   More About C++.     (line  112)
-* crop:                                  Scene Attributes.   (line  239)
-* crop_diamond:                          Scene Attributes.   (line  239)
-* crop_ellipse:                          Scene Attributes.   (line  239)
-* Csc:                                   More About C++.     (line  112)
-* Cyan:                                  Color.              (line   29)
-* cyl:                                   Creating and Drawing Objects.
-                                                             (line   27)
-* dart:                                  Creating and Drawing Objects.
-                                                             (line  248)
-* dart_field:                            Creating and Drawing Objects.
-                                                             (line  793)
-* dash_size:                             Drawing Attributes. (line   44)
-* dashed:                                Drawing Attributes. (line   53)
-* data_bins:                             Creating and Drawing Objects.
-                                                             (line 1006)
-* data_bins.bar_chart:                   Creating and Drawing Objects.
-                                                             (line 1016)
-* data_bins.cut:                         Creating and Drawing Objects.
-                                                             (line 1006)
-* data_bins.histogram:                   Creating and Drawing Objects.
-                                                             (line 1016)
-* data_bins.plot:                        Creating and Drawing Objects.
-                                                             (line 1016)
-* data_bins.read:                        Creating and Drawing Objects.
-                                                             (line 1006)
-* data_file:                             Creating and Drawing Objects.
-                                                             (line  931)
-* data_file.avg:                         Creating and Drawing Objects.
-                                                             (line  950)
-* data_file.column:                      Creating and Drawing Objects.
-                                                             (line  973)
-* data_file.covar:                       Creating and Drawing Objects.
-                                                             (line  950)
-* data_file.dot:                         Creating and Drawing Objects.
-                                                             (line  950)
-* data_file.plot:                        Creating and Drawing Objects.
-                                                             (line  958)
-* data_file.precision:                   Creating and Drawing Objects.
-                                                             (line  967)
-* data_file.read:                        Creating and Drawing Objects.
-                                                             (line  931)
-* data_file.regression:                  Creating and Drawing Objects.
-                                                             (line  950)
-* data_file.transform:                   Creating and Drawing Objects.
-                                                             (line  945)
-* data_file.var:                         Creating and Drawing Objects.
-                                                             (line  950)
-* data_file.write:                       Creating and Drawing Objects.
-                                                             (line  967)
-* data_mask:                             Creating and Drawing Objects.
-                                                             (line  988)
-* data_mask.prune:                       Creating and Drawing Objects.
-                                                             (line  996)
-* ddot:                                  Drawing Attributes. (line  174)
-* deactivate:                            Scene Attributes.   (line  161)
-* Deriv:                                 Creating and Drawing Objects.
-                                                             (line  745)
-* Deriv.eval:                            Creating and Drawing Objects.
-                                                             (line  745)
-* Deriv.left:                            Creating and Drawing Objects.
-                                                             (line  745)
-* Deriv.right:                           Creating and Drawing Objects.
-                                                             (line  745)
-* disk_line:                             Creating and Drawing Objects.
-                                                             (line  826)
-* domain:                                Creating and Drawing Objects.
-                                                             (line  512)
-* domain.resize:                         Creating and Drawing Objects.
-                                                             (line  531)
-* domain.slice:                          Creating and Drawing Objects.
-                                                             (line  531)
-* domain.slices:                         Creating and Drawing Objects.
-                                                             (line  531)
-* domain_list:                           Creating and Drawing Objects.
-                                                             (line  668)
-* domain_list.add:                       Creating and Drawing Objects.
-                                                             (line  668)
-* dot:                                   Drawing Attributes. (line  174)
-* dot_size:                              Drawing Attributes. (line  185)
-* dotted:                                Drawing Attributes. (line   53)
-* draw:                                  Creating and Drawing Objects.
-                                                             (line   59)
-* ellipse:                               Creating and Drawing Objects.
-                                                             (line  167)
-* ellipse_bottom:                        Creating and Drawing Objects.
-                                                             (line  180)
-* ellipse_left:                          Creating and Drawing Objects.
-                                                             (line  180)
-* ellipse_right:                         Creating and Drawing Objects.
-                                                             (line  180)
-* ellipse_top:                           Creating and Drawing Objects.
-                                                             (line  180)
-* end:                                   File Structure.     (line   12)
-* envelope:                              Creating and Drawing Objects.
-                                                             (line  768)
-* extract:                               Scene Attributes.   (line  183)
-* extract_diamond:                       Scene Attributes.   (line  190)
-* extract_ellipse:                       Scene Attributes.   (line  190)
-* fill:                                  Drawing Attributes. (line   12)
-* flow:                                  Creating and Drawing Objects.
-                                                             (line  778)
-* font_face:                             Drawing Attributes. (line  144)
-* font_size:                             Drawing Attributes. (line  144)
-* fractal:                               Creating and Drawing Objects.
-                                                             (line  214)
-* frame:                                 Creating and Drawing Objects.
-                                                             (line  134)
-* front_arc:                             Creating and Drawing Objects.
-                                                             (line  851)
-* front_arc2:                            Creating and Drawing Objects.
-                                                             (line  851)
-* front_cube:                            Creating and Drawing Objects.
-                                                             (line  857)
-* front_dodeca:                          Creating and Drawing Objects.
-                                                             (line  857)
-* front_icosa:                           Creating and Drawing Objects.
-                                                             (line  857)
-* front_line:                            Creating and Drawing Objects.
-                                                             (line  851)
-* front_octa:                            Creating and Drawing Objects.
-                                                             (line  857)
-* front_tetra:                           Creating and Drawing Objects.
-                                                             (line  857)
-* front_triangle:                        Creating and Drawing Objects.
-                                                             (line  857)
-* frontplot_N:                           Creating and Drawing Objects.
-                                                             (line  879)
-* frontplot_R:                           Creating and Drawing Objects.
-                                                             (line  879)
-* frontplot_S:                           Creating and Drawing Objects.
-                                                             (line  879)
-* Gray:                                  Color.              (line   29)
-* Green:                                 Color.              (line   23)
-* grid:                                  Creating and Drawing Objects.
-                                                             (line  405)
-* h_axis:                                Creating and Drawing Objects.
-                                                             (line  352)
-* h_axis_labels:                         Creating and Drawing Objects.
-                                                             (line  368)
-* h_axis_log_labels:                     Creating and Drawing Objects.
-                                                             (line  368)
-* h_axis_log_masklabels:                 Creating and Drawing Objects.
-                                                             (line  368)
-* h_axis_masklabels:                     Creating and Drawing Objects.
-                                                             (line  368)
-* h_error_bar:                           Creating and Drawing Objects.
-                                                             (line 1047)
-* h_log_axis:                            Creating and Drawing Objects.
-                                                             (line  352)
-* h_scale:                               Scene Attributes.   (line  282)
-* h_shear:                               Scene Attributes.   (line  282)
-* hyperbolic_line:                       Creating and Drawing Objects.
-                                                             (line  826)
-* import:                                Scene Attributes.   (line  172)
-* include:                               C++ Basics.         (line   37)
-* inf:                                   Creating and Drawing Objects.
-                                                             (line  731)
-* inlay:                                 Scene Attributes.   (line  204)
-* inlay_horizontal:                      Scene Attributes.   (line  204)
-* inlay_vertical:                        Scene Attributes.   (line  204)
-* inset:                                 Scene Attributes.   (line  172)
-* Integral:                              Creating and Drawing Objects.
-                                                             (line  745)
-* Integral.eval:                         Creating and Drawing Objects.
-                                                             (line  745)
-* J:                                     Creating and Drawing Objects.
-                                                             (line   38)
-* label <1>:                             Drawing Attributes. (line   99)
-* label:                                 Layout Tricks.      (line   46)
-* label_border:                          Drawing Attributes. (line  160)
-* label_color:                           Drawing Attributes. (line  160)
-* label_mask:                            Drawing Attributes. (line  160)
-* label_pad:                             Drawing Attributes. (line  160)
-* latitude:                              Creating and Drawing Objects.
-                                                             (line  837)
-* left_axis:                             Creating and Drawing Objects.
-                                                             (line  332)
-* legend:                                Creating and Drawing Objects.
-                                                             (line 1083)
-* legend.backing:                        Creating and Drawing Objects.
-                                                             (line 1083)
-* legend.border:                         Creating and Drawing Objects.
-                                                             (line 1083)
-* legend.draw:                           Creating and Drawing Objects.
-                                                             (line 1115)
-* legend.fill_item:                      Creating and Drawing Objects.
-                                                             (line 1101)
-* legend.item_border:                    Creating and Drawing Objects.
-                                                             (line 1083)
-* legend.key_size:                       Creating and Drawing Objects.
-                                                             (line 1083)
-* legend.label_skip:                     Creating and Drawing Objects.
-                                                             (line 1083)
-* legend.mark_item:                      Creating and Drawing Objects.
-                                                             (line 1101)
-* legend.path_item:                      Creating and Drawing Objects.
-                                                             (line 1101)
-* Line:                                  Creating and Drawing Objects.
-                                                             (line  145)
-* line:                                  Creating and Drawing Objects.
-                                                             (line  145)
-* line_style:                            Drawing Attributes. (line   44)
-* log1_grid:                             Creating and Drawing Objects.
-                                                             (line  411)
-* log2_grid:                             Creating and Drawing Objects.
-                                                             (line  411)
-* log_grid:                              Creating and Drawing Objects.
-                                                             (line  411)
-* longitude:                             Creating and Drawing Objects.
-                                                             (line  837)
-* Magenta:                               Color.              (line   29)
-* move_to:                               Creating and Drawing Objects.
-                                                             (line   59)
-* newton:                                Creating and Drawing Objects.
-                                                             (line  731)
-* no_label_border:                       Drawing Attributes. (line  160)
-* nofill:                                Drawing Attributes. (line   12)
-* ode_plot:                              Creating and Drawing Objects.
-                                                             (line  778)
-* P:                                     Creating and Drawing Objects.
-                                                             (line   27)
-* P.x1:                                  Creating and Drawing Objects.
-                                                             (line   38)
-* P.x2:                                  Creating and Drawing Objects.
-                                                             (line   38)
-* P.x3:                                  Creating and Drawing Objects.
-                                                             (line   38)
-* path:                                  Creating and Drawing Objects.
-                                                             (line  437)
-* path.close:                            Creating and Drawing Objects.
-                                                             (line  468)
-* path.draw:                             Creating and Drawing Objects.
-                                                             (line  468)
-* path.fill:                             Creating and Drawing Objects.
-                                                             (line  468)
-* pen <1>:                               Creating and Drawing Objects.
-                                                             (line  422)
-* pen:                                   Drawing Attributes. (line   23)
-* picture <1>:                           Picture Size and Aspect Ratio.
-                                                             (line   24)
-* picture:                               File Structure.     (line   12)
-* plain:                                 Drawing Attributes. (line   33)
-* Plane:                                 Creating and Drawing Objects.
-                                                             (line   85)
-* plot:                                  Creating and Drawing Objects.
-                                                             (line  495)
-* polar:                                 Creating and Drawing Objects.
-                                                             (line   27)
-* polar_grid:                            Creating and Drawing Objects.
-                                                             (line  405)
-* polarplot:                             Creating and Drawing Objects.
-                                                             (line  495)
-* post_write:                            C++ Basics.         (line  122)
-* postcomp:                              Scene Attributes.   (line  282)
-* pre_write:                             C++ Basics.         (line  122)
-* pt_to_screen:                          Scene Attributes.   (line  214)
-* quad:                                  Creating and Drawing Objects.
-                                                             (line  145)
-* rect:                                  Creating and Drawing Objects.
-                                                             (line  145)
-* Red:                                   Color.              (line   23)
-* reflect:                               Scene Attributes.   (line  282)
-* rgb:                                   Drawing Attributes. (line  210)
-* RGB:                                   Color.              (line   23)
-* riemann_sum:                           Creating and Drawing Objects.
-                                                             (line  756)
-* right_angle:                           Creating and Drawing Objects.
-                                                             (line  193)
-* right_axis:                            Creating and Drawing Objects.
-                                                             (line  332)
-* ring:                                  Drawing Attributes. (line  174)
-* rotate:                                Scene Attributes.   (line  282)
-* scale <1>:                             Creating and Drawing Objects.
-                                                             (line   59)
-* scale:                                 Scene Attributes.   (line  282)
-* scenery:                               Creating and Drawing Objects.
-                                                             (line  680)
-* scenery.add:                           Creating and Drawing Objects.
-                                                             (line  680)
-* scenery.draw:                          Creating and Drawing Objects.
-                                                             (line  680)
-* Sec:                                   More About C++.     (line  112)
-* Segment:                               Creating and Drawing Objects.
-                                                             (line   90)
-* set_crop:                              Scene Attributes.   (line  239)
-* sgn:                                   More About C++.     (line  123)
-* shadeplot:                             Creating and Drawing Objects.
-                                                             (line  495)
-* shift <1>:                             Creating and Drawing Objects.
-                                                             (line   59)
-* shift:                                 Scene Attributes.   (line  282)
-* Sin:                                   More About C++.     (line  112)
-* sinx:                                  More About C++.     (line  123)
-* slope_field:                           Creating and Drawing Objects.
-                                                             (line  793)
-* solid:                                 Drawing Attributes. (line   53)
-* sph:                                   Creating and Drawing Objects.
-                                                             (line   27)
-* Sphere:                                Creating and Drawing Objects.
-                                                             (line   93)
-* spline:                                Creating and Drawing Objects.
-                                                             (line  167)
-* spot:                                  Drawing Attributes. (line  174)
-* sup:                                   Creating and Drawing Objects.
-                                                             (line  731)
-* surface:                               Creating and Drawing Objects.
-                                                             (line  616)
-* surface_rev:                           Creating and Drawing Objects.
-                                                             (line  627)
-* Tan:                                   More About C++.     (line  112)
-* tan_field:                             Creating and Drawing Objects.
-                                                             (line  768)
-* tan_line:                              Creating and Drawing Objects.
-                                                             (line  768)
-* top_axis:                              Creating and Drawing Objects.
-                                                             (line  332)
-* triangle:                              Creating and Drawing Objects.
-                                                             (line  145)
-* unitlength:                            Picture Size and Aspect Ratio.
-                                                             (line   24)
-* v_axis:                                Creating and Drawing Objects.
-                                                             (line  352)
-* v_axis_labels:                         Creating and Drawing Objects.
-                                                             (line  368)
-* v_axis_log_labels:                     Creating and Drawing Objects.
-                                                             (line  368)
-* v_axis_log_masklabels:                 Creating and Drawing Objects.
-                                                             (line  368)
-* v_axis_masklabels:                     Creating and Drawing Objects.
-                                                             (line  368)
-* v_error_bar:                           Creating and Drawing Objects.
-                                                             (line 1047)
-* v_log_axis:                            Creating and Drawing Objects.
-                                                             (line  352)
-* v_scale:                               Scene Attributes.   (line  282)
-* v_shear:                               Scene Attributes.   (line  282)
-* vector_field:                          Creating and Drawing Objects.
-                                                             (line  793)
-* White:                                 Color.              (line   23)
-* write:                                 C++ Basics.         (line  122)
-* Yellow:                                Color.              (line   29)
-* zero:                                  More About C++.     (line  123)
-
-
-File: epix.info,  Node: Concept Index,  Prev: Function Index,  Up: Top
-
-Concept Index
-*************
-
-
-* Menu:
-
-* Affine map:                            Scene Attributes.   (line  264)
-* Affine map!action on labels:           Drawing Attributes. (line  130)
-* Angle units <1>:                       Drawing Attributes. (line  121)
-* Angle units:                           Scene Attributes.   (line   14)
-* Angular mode <1>:                      More About C++.     (line  112)
-* Angular mode:                          Creating and Drawing Objects.
-                                                             (line   27)
-* Animation:                             Animation.          (line    6)
-* Arrow:                                 Creating and Drawing Objects.
-                                                             (line  231)
-* Axes:                                  Creating and Drawing Objects.
-                                                             (line  257)
-* Axes!broken:                           Creating and Drawing Objects.
-                                                             (line  390)
-* Axes!labeling:                         Creating and Drawing Objects.
-                                                             (line  257)
-* Axes!logarithmic:                      Creating and Drawing Objects.
-                                                             (line  350)
-* Bar Charts:                            Creating and Drawing Objects.
-                                                             (line 1013)
-* Bounding box:                          Scene Attributes.   (line  156)
-* Camera <1>:                            Hidden Object Removal.
-                                                             (line   13)
-* Camera:                                Scene Attributes.   (line   21)
-* Camera!color separation:               Scene Attributes.   (line   94)
-* Camera!lens:                           Scene Attributes.   (line   57)
-* Camera!manipulation:                   Scene Attributes.   (line   69)
-* Camera!manipulation of:                Scene Attributes.   (line  116)
-* Camera!viewpoint:                      Scene Attributes.   (line   31)
-* canvas:                                The Drawing Model.  (line   11)
-* Circle:                                Creating and Drawing Objects.
-                                                             (line   69)
-* Classes:                               More About C++.     (line  149)
-* Clipping:                              Scene Attributes.   (line  120)
-* Color <1>:                             Drawing Attributes. (line  215)
-* Color:                                 Color.              (line    6)
-* Color!separation:                      Scene Attributes.   (line   94)
-* Color!surface plotting:                Creating and Drawing Objects.
-                                                             (line  700)
-* Color!transparency:                    Color.              (line   65)
-* Conditional statement:                 More About C++.     (line   22)
-* Cplusplus@C++ <1>:                     More About C++.     (line    6)
-* Cplusplus@C++:                         C++ Basics.         (line    6)
-* Cropping:                              Scene Attributes.   (line  231)
-* Data plotting:                         Creating and Drawing Objects.
-                                                             (line  897)
-* Domain:                                Creating and Drawing Objects.
-                                                             (line  509)
-* Emacs@emacs <1>:                       Animation.          (line   19)
-* Emacs@emacs <2>:                       C++ Basics.         (line   16)
-* Emacs@emacs <3>:                       Running ePiX.       (line   50)
-* Emacs@emacs:                           Software Dependencies.
-                                                             (line   36)
-* Error bars:                            Creating and Drawing Objects.
-                                                             (line 1046)
-* Filling:                               Drawing Attributes. (line   11)
-* Fonts:                                 Drawing Attributes. (line  142)
-* Free software <1>:                     Software Freedom.   (line    6)
-* Free software:                         Introduction.       (line   42)
-* Function:                              More About C++.     (line   22)
-* Function!call syntax:                  More About C++.     (line  186)
-* Function!class member:                 More About C++.     (line  156)
-* Function!mathematical:                 More About C++.     (line  108)
-* Function!overloaded:                   More About C++.     (line  229)
-* Function!returning void:               More About C++.     (line   84)
-* Graph paper:                           Creating and Drawing Objects.
-                                                             (line  422)
-* Graphical interface:                   Tutorial.           (line   13)
-* Hidden object removal:                 Hidden Object Removal.
-                                                             (line    6)
-* Histograms:                            Creating and Drawing Objects.
-                                                             (line 1013)
-* Input file!comment in:                 More About C++.     (line  337)
-* Input file!conditional compilation:    More About C++.     (line  281)
-* Installation <1>:                      Installation.       (line   31)
-* Installation:                          Software Dependencies.
-                                                             (line    6)
-* Intersection:                          Creating and Drawing Objects.
-                                                             (line  109)
-* Labels <1>:                            More About C++.     (line  310)
-* Labels:                                Drawing Attributes. (line   80)
-* Labels!alignment:                      Drawing Attributes. (line   80)
-* Labels!axis:                           Creating and Drawing Objects.
-                                                             (line  257)
-* Labels!backslash in:                   Drawing Attributes. (line  205)
-* Labels!fonts in:                       Drawing Attributes. (line  142)
-* Labels!in double quotes:               Drawing Attributes. (line  205)
-* Labels!rotated:                        Drawing Attributes. (line  121)
-* Layout <1>:                            Scene Attributes.   (line  148)
-* Layout:                                Layout Tricks.      (line    6)
-* Legends:                               Creating and Drawing Objects.
-                                                             (line 1072)
-* Mac OS X:                              Software Dependencies.
-                                                             (line    6)
-* Marker types:                          Drawing Attributes. (line  172)
-* Output format:                         File Structure.     (line   31)
-* Path:                                  Drawing Attributes. (line   11)
-* Path!class:                            Creating and Drawing Objects.
-                                                             (line  433)
-* Path!filled:                           Drawing Attributes. (line   11)
-* Path!fractal:                          Creating and Drawing Objects.
-                                                             (line  206)
-* Path!style:                            Drawing Attributes. (line   41)
-* Picture!aspect ratio:                  Picture Size and Aspect Ratio.
-                                                             (line   44)
-* Picture!bounding box:                  Picture Size and Aspect Ratio.
-                                                             (line   44)
-* Picture!offset:                        Picture Size and Aspect Ratio.
-                                                             (line    6)
-* Picture!size:                          Picture Size and Aspect Ratio.
-                                                             (line    6)
-* Plane:                                 Creating and Drawing Objects.
-                                                             (line   85)
-* Plotting:                              Creating and Drawing Objects.
-                                                             (line  480)
-* Plotting!calculus:                     Creating and Drawing Objects.
-                                                             (line  721)
-* Plotting!data:                         Creating and Drawing Objects.
-                                                             (line  897)
-* Plotting!spherical:                    Creating and Drawing Objects.
-                                                             (line  833)
-* Plotting!surface:                      Creating and Drawing Objects.
-                                                             (line  605)
-* Point:                                 Creating and Drawing Objects.
-                                                             (line   14)
-* Pointer:                               More About C++.     (line   52)
-* post_write:                            C++ Basics.         (line  122)
-* pre_write:                             C++ Basics.         (line  122)
-* Preamble:                              File Structure.     (line   10)
-* Screen:                                Scene Attributes.   (line   21)
-* Screen!active:                         Scene Attributes.   (line  148)
-* Segment:                               Creating and Drawing Objects.
-                                                             (line   90)
-* Sphere:                                Creating and Drawing Objects.
-                                                             (line   93)
-* Stereograms:                           Layout Tricks.      (line    8)
-* Variable!local:                        More About C++.     (line  239)
-* Variable!names:                        More About C++.     (line   34)
-* Variable!pointer:                      More About C++.     (line   52)
-* Variable!reference:                    More About C++.     (line  186)
-* Variable!type of:                      More About C++.     (line   45)
-* Viewpoint:                             Scene Attributes.   (line   31)
-* Windows operating system:              Software Dependencies.
-                                                             (line   40)
-* write:                                 C++ Basics.         (line  122)
-
-
-
-Tag Table:
-Node: Top185
-Node: Introduction1105
-Node: Changes in Version 1.24664
-Node: Software Dependencies8541
-Ref: section:software_deps8714
-Node: Installation11086
-Node: Getting Started12670
-Ref: chapter:started12806
-Node: Running `ePiX'13556
-Ref: section:running13709
-Node: The Drawing Model16861
-Ref: section:overview17013
-Node: Tutorial19428
-Ref: section:tutorial19560
-Ref: taylor_poly24927
-Node: `C++' Basics26756
-Ref: fig:captioned32767
-Node: Animation33131
-Ref: section:animation33262
-Node: Layout Tricks34998
-Ref: section:layout35116
-Node: Reference Manual37114
-Ref: chapter:ref-man37255
-Node: File Structure38952
-Node: Picture Size and Aspect Ratio41705
-Ref: page:scaling44202
-Node: Color44417
-Ref: section:color44557
-Ref: fig:densities46382
-Node: Scene Attributes47847
-Ref: fig:camera48882
-Ref: truesize56642
-Node: Drawing Attributes62495
-Ref: table:marker70626
-Node: Creating and Drawing Objects71285
-Ref: fig:fractal81596
-Ref: fig:plot96868
-Ref: non-eucl107182
-Node: More About `C++'121128
-Ref: references130049
-Node: Attribute Quick Reference137418
-Ref: section:quickref137580
-Node: Advanced Topics140341
-Ref: chapter:adv140481
-Node: Hidden Object Removal140765
-Ref: section:hidden140932
-Node: Extensions142805
-Ref: section:extensions142953
-Node: Programmer's Guide149302
-Ref: section:programmers149436
-Ref: section:interface152502
-Node: Software Freedom158743
-Node: Acknowledgments164009
-Node: Function Index165447
-Node: Concept Index200200
-
-End Tag Table
diff --git a/graphics/epix/doc/graphpaper.eepic b/graphics/epix/doc/graphpaper.eepic
deleted file mode 100644
index 94a18e8085..0000000000
--- a/graphics/epix/doc/graphpaper.eepic
+++ /dev/null
@@ -1,101 +0,0 @@
-%% Generated from graphpaper.xp on Tue Jan  4 15:32:14 EST 2005 by
-%% ePiX-1.0.3
-%%
-%%   Cartesian bounding box: [-2,2] x [-1,1]
-%%   Actual size: 2in x 1in
-%%   Figure offset: right by 0in, up by 0in
-%%
-\setlength{\unitlength}{0.01in}
-\begin{picture}(200,100)(-0,-0)
-%% ---
-\allinethickness{0.25pt}%
-\path(0,0)(0,100)
-\path(5,0)(5,100)
-\path(10,0)(10,100)
-\path(15,0)(15,100)
-\path(20,0)(20,100)
-\path(25,0)(25,100)
-\path(30,0)(30,100)
-\path(35,0)(35,100)
-\path(40,0)(40,100)
-\path(45,0)(45,100)
-\path(50,0)(50,100)
-\path(55,0)(55,100)
-\path(60,0)(60,100)
-\path(65,0)(65,100)
-\path(70,0)(70,100)
-\path(75,0)(75,100)
-\path(80,0)(80,100)
-\path(85,0)(85,100)
-\path(90,0)(90,100)
-\path(95,0)(95,100)
-\path(100,0)(100,100)
-\path(105,0)(105,100)
-\path(110,0)(110,100)
-\path(115,0)(115,100)
-\path(120,0)(120,100)
-\path(125,0)(125,100)
-\path(130,0)(130,100)
-\path(135,0)(135,100)
-\path(140,0)(140,100)
-\path(145,0)(145,100)
-\path(150,0)(150,100)
-\path(155,0)(155,100)
-\path(160,0)(160,100)
-\path(165,0)(165,100)
-\path(170,0)(170,100)
-\path(175,0)(175,100)
-\path(180,0)(180,100)
-\path(185,0)(185,100)
-\path(190,0)(190,100)
-\path(195,0)(195,100)
-\path(200,0)(200,100)
-\path(0,0)(200,0)
-\path(0,5)(200,5)
-\path(0,10)(200,10)
-\path(0,15)(200,15)
-\path(0,20)(200,20)
-\path(0,25)(200,25)
-\path(0,30)(200,30)
-\path(0,35)(200,35)
-\path(0,40)(200,40)
-\path(0,45)(200,45)
-\path(0,50)(200,50)
-\path(0,55)(200,55)
-\path(0,60)(200,60)
-\path(0,65)(200,65)
-\path(0,70)(200,70)
-\path(0,75)(200,75)
-\path(0,80)(200,80)
-\path(0,85)(200,85)
-\path(0,90)(200,90)
-\path(0,95)(200,95)
-\path(0,100)(200,100)
-%% ---
-\allinethickness{0.5pt}%
-\path(0,0)(0,100)
-\path(25,0)(25,100)
-\path(50,0)(50,100)
-\path(75,0)(75,100)
-\path(100,0)(100,100)
-\path(125,0)(125,100)
-\path(150,0)(150,100)
-\path(175,0)(175,100)
-\path(200,0)(200,100)
-\path(0,0)(200,0)
-\path(0,25)(200,25)
-\path(0,50)(200,50)
-\path(0,75)(200,75)
-\path(0,100)(200,100)
-%% ---
-\allinethickness{1pt}%
-\path(0,0)(0,100)
-\path(50,0)(50,100)
-\path(100,0)(100,100)
-\path(150,0)(150,100)
-\path(200,0)(200,100)
-\path(0,0)(200,0)
-\path(0,50)(200,50)
-\path(0,100)(200,100)
-%% ---
-\end{picture}
diff --git a/graphics/epix/doc/graphpaper.xp b/graphics/epix/doc/graphpaper.xp
deleted file mode 100644
index 795c499d4d..0000000000
--- a/graphics/epix/doc/graphpaper.xp
+++ /dev/null
@@ -1,24 +0,0 @@
-/* -*-ePiX-*- */
-/* graphpaper.c -- July 6, 2002 */
-#include "epix.h"
-using namespace ePiX;
-
-int main()
-{
-  bounding_box(P(-2,-1), P(2,1));
-  picture(P(200,100));
-  unitlength("0.01in");
-
-  begin();
-
-  pen(0.25);
-  grid(10*x_size, 10*y_size);
-
-  pen(0.5);
-  grid(2*x_size, 2*y_size);
-
-  pen(1);
-  grid(x_size, y_size);
-
-  end();
-}
diff --git a/graphics/epix/doc/hello.eepic b/graphics/epix/doc/hello.eepic
deleted file mode 100644
index 9b58fefc81..0000000000
--- a/graphics/epix/doc/hello.eepic
+++ /dev/null
@@ -1,15 +0,0 @@
-%% Generated from hello.xp on Thu Jun 28 11:33:40 EDT 2007 by
-%% ePiX-1.1.6
-%%
-%%   Cartesian bounding box: [-1,1] x [-1,1]
-%%   Actual size: 2 x 1in
-%%   Figure offset: left by 0in, down by 0in
-%%
-\xdefinecolor{rgb_000000}{rgb}{0,0,0}
-\setlength{\unitlength}{1in}
-\begin{picture}(2,1)(-0,-0)
-\put(1,0.5){\makebox(0,0)[c]{{\Huge Hello, world!}}}
-\allinethickness{1pt}%
-\path(2,0)(2,1)(0,1)(0,0)(2,0)
-%%
-\end{picture}
diff --git a/graphics/epix/doc/hello.xp b/graphics/epix/doc/hello.xp
deleted file mode 100644
index c8bd3739b9..0000000000
--- a/graphics/epix/doc/hello.xp
+++ /dev/null
@@ -1,20 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-int main()
-{
-  picture(P(-1,-1),P(1,1), "2x1in");
-
-  begin();
-
-  // uncomment and permute these lines
-  // crop_ellipse();
-  // backing(Yellow());
-  border(Black(), "1pt");
-
-  font_size("Huge");
-  label(P(0,0), "Hello, world!");
-
-  end();
-}
diff --git a/graphics/epix/doc/koch.eepic b/graphics/epix/doc/koch.eepic
deleted file mode 100644
index 1f949958c0..0000000000
--- a/graphics/epix/doc/koch.eepic
+++ /dev/null
@@ -1,160 +0,0 @@
-%% Generated from koch.xp on Tue Jan  4 15:32:16 EST 2005 by
-%% ePiX-1.0.3
-%%
-%%   Cartesian bounding box: [0,3] x [0,0.5]
-%%   Actual size: 3in x 0.5in
-%%   Figure offset: right by 0in, up by 0.25in
-%%
-\setlength{\unitlength}{1in}
-\begin{picture}(3,0.5)(-0,-0.25)
-%% ---
-\path(0,0)(0.25,0)(0.25,0.25)(0.5,0.25)(0.5,0)(0.5,-0.25)(0.75,-0.25)
-  (0.75,0)(1,0)
-%% ---
-\path(1,0)(1.0625,0)(1.0625,0.0625)(1.125,0.0625)(1.125,0)(1.125,-0.0625)
-  (1.1875,-0.0625)(1.1875,0)(1.25,0)(1.25,0.0625)(1.1875,0.0625)
-  (1.1875,0.125)(1.25,0.125)(1.3125,0.125)(1.3125,0.1875)(1.25,0.1875)
-  (1.25,0.25)(1.3125,0.25)(1.3125,0.3125)(1.375,0.3125)(1.375,0.25)
-  (1.375,0.1875)(1.4375,0.1875)(1.4375,0.25)(1.5,0.25)(1.5,0.1875)
-  (1.5625,0.1875)(1.5625,0.125)(1.5,0.125)(1.4375,0.125)(1.4375,0.0625)
-  (1.5,0.0625)(1.5,0)(1.5,-0.0625)(1.5625,-0.0625)(1.5625,-0.125)
-  (1.5,-0.125)(1.4375,-0.125)(1.4375,-0.1875)(1.5,-0.1875)(1.5,-0.25)
-  (1.5625,-0.25)(1.5625,-0.1875)(1.625,-0.1875)(1.625,-0.25)(1.625,-0.3125)
-  (1.6875,-0.3125)(1.6875,-0.25)(1.75,-0.25)(1.75,-0.1875)(1.6875,-0.1875)
-  (1.6875,-0.125)(1.75,-0.125)(1.8125,-0.125)(1.8125,-0.0625)(1.75,-0.0625)
-  (1.75,0)(1.8125,0)(1.8125,0.0625)(1.875,0.0625)(1.875,0)
-\path(1.875,0)(1.875,-0.0625)(1.9375,-0.0625)(1.9375,0)(2,0)
-%% ---
-\path(2,0)(2.01562,0)(2.01562,0.015625)(2.03125,0.015625)(2.03125,0)
-  (2.03125,-0.015625)(2.04688,-0.015625)(2.04688,0)(2.0625,0)
-  (2.0625,0.015625)(2.04688,0.015625)(2.04688,0.03125)(2.0625,0.03125)
-  (2.07812,0.03125)(2.07812,0.046875)(2.0625,0.046875)(2.0625,0.0625)
-  (2.07812,0.0625)(2.07812,0.078125)(2.09375,0.078125)(2.09375,0.0625)
-  (2.09375,0.046875)(2.10938,0.046875)(2.10938,0.0625)(2.125,0.0625)
-  (2.125,0.046875)(2.14062,0.046875)(2.14062,0.03125)(2.125,0.03125)
-  (2.10938,0.03125)(2.10938,0.015625)(2.125,0.015625)(2.125,0)
-  (2.125,-0.015625)(2.14062,-0.015625)(2.14062,-0.03125)(2.125,-0.03125)
-  (2.10938,-0.03125)(2.10938,-0.046875)(2.125,-0.046875)(2.125,-0.0625)
-  (2.14062,-0.0625)(2.14062,-0.046875)(2.15625,-0.046875)(2.15625,-0.0625)
-  (2.15625,-0.078125)(2.17188,-0.078125)(2.17188,-0.0625)(2.1875,-0.0625)
-  (2.1875,-0.046875)(2.17188,-0.046875)(2.17188,-0.03125)(2.1875,-0.03125)
-  (2.20312,-0.03125)(2.20312,-0.015625)(2.1875,-0.015625)(2.1875,0)
-  (2.20312,0)(2.20312,0.015625)(2.21875,0.015625)(2.21875,0)
-\path(2.21875,0)(2.21875,-0.015625)(2.23438,-0.015625)(2.23438,0)(2.25,0)
-  (2.25,0.015625)(2.23438,0.015625)(2.23438,0.03125)(2.25,0.03125)
-  (2.26562,0.03125)(2.26562,0.046875)(2.25,0.046875)(2.25,0.0625)
-  (2.23438,0.0625)(2.23438,0.046875)(2.21875,0.046875)(2.21875,0.0625)
-  (2.21875,0.078125)(2.20312,0.078125)(2.20312,0.0625)(2.1875,0.0625)
-  (2.1875,0.078125)(2.17188,0.078125)(2.17188,0.09375)(2.1875,0.09375)
-  (2.20312,0.09375)(2.20312,0.109375)(2.1875,0.109375)(2.1875,0.125)
-  (2.20312,0.125)(2.20312,0.140625)(2.21875,0.140625)(2.21875,0.125)
-  (2.21875,0.109375)(2.23438,0.109375)(2.23438,0.125)(2.25,0.125)
-  (2.26562,0.125)(2.26562,0.140625)(2.28125,0.140625)(2.28125,0.125)
-  (2.28125,0.109375)(2.29688,0.109375)(2.29688,0.125)(2.3125,0.125)
-  (2.3125,0.140625)(2.29688,0.140625)(2.29688,0.15625)(2.3125,0.15625)
-  (2.32812,0.15625)(2.32812,0.171875)(2.3125,0.171875)(2.3125,0.1875)
-  (2.29688,0.1875)(2.29688,0.171875)(2.28125,0.171875)(2.28125,0.1875)
-  (2.28125,0.203125)(2.26562,0.203125)(2.26562,0.1875)
-\path(2.26562,0.1875)(2.25,0.1875)(2.25,0.203125)(2.23438,0.203125)
-  (2.23438,0.21875)(2.25,0.21875)(2.26562,0.21875)(2.26562,0.234375)
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diff --git a/graphics/epix/doc/koch.xp b/graphics/epix/doc/koch.xp
deleted file mode 100644
index d1a04e1c0f..0000000000
--- a/graphics/epix/doc/koch.xp
+++ /dev/null
@@ -1,24 +0,0 @@
-/* -*-ePiX-*- */
-/* koch.c -- Simple fractal "curve" generation. -- June 6, 2002 */
-
-#include "epix.h"
-using namespace ePiX;
-
-// const int koch_seed[] = {6, 4, 0, 1, -1, 0};
-const int seed[] = {4, 8, 0, 1, 0, 3, 3, 0, 1, 0};
-
-int main() 
-{
-  bounding_box(P(0,0), P(3, 0.5));
-  picture(P(3, 0.5));
-  unitlength("1in");
-  offset(P(0,0.25));
-
-  begin();   
-
-  for (int i=1; i <= 3; ++i)
-    fractal(P(i-1,0), P(i,0), i, seed);
-
-  end();
-}
-
diff --git a/graphics/epix/doc/layout.eepic b/graphics/epix/doc/layout.eepic
deleted file mode 100644
index 07eec3fcb6..0000000000
--- a/graphics/epix/doc/layout.eepic
+++ /dev/null
@@ -1,1511 +0,0 @@
-%% Generated from layout.xp on Sat Jun 30 12:16:41 EDT 2007 by
-%% ePiX-1.1.6
-%%
-%%   Cartesian bounding box: [0,2] x [0,3]
-%%   Actual size: 5 x 7.5in
-%%   Figure offset: left by 0in, down by 0in
-%%
-\xdefinecolor{rgb_000000}{rgb}{0,0,0}
-\xdefinecolor{rgb_980000}{rgb}{0.596078,0,0}
-\setlength{\unitlength}{1in}
-\begin{picture}(5,7.5)(-0,-0)
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-  (0.654259,6.69459)(0.568192,6.71076)
-%%
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-%%
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-%%
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-%%
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-\color{rgb_980000}%
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diff --git a/graphics/epix/doc/layout.xp b/graphics/epix/doc/layout.xp
deleted file mode 100644
index cd3e201011..0000000000
--- a/graphics/epix/doc/layout.xp
+++ /dev/null
@@ -1,36 +0,0 @@
-/* -*-ePiX-*- */
-/* layout.xp -- June 27, 2007 */
-#include "epix.h"
-using namespace ePiX;
-
-const double a(sqrt(3));
-P f(double u, double v)
-{
-  return P((u-v)*(u+v), 2*u*v, u); //u*(u-a*v)*(u+a*v));
-}
-
-int main()
-{
-  picture(P(0,0), P(2,3), "5x7.5in");
-
-  begin();
-
-  domain R(P(-1,-1), P(1,1), mesh(12,12), mesh(24,24));
-
-  for (int i=0; i<2; ++i)
-    for (int j=0; j<3; ++j)
-      {
-        screen my(P(-3,-3), P(3,3));
-        activate(my);
-        border(Red(0.6), "1pt");
-	camera.at(sph(10, (2*j+i+1)*M_PI/8, M_PI/6));
-
-	plot(f, R);
-	arrow(P(0,0,0), 2*E_1);
-	arrow(P(0,0,0), 2*E_2);
-        inset(P(i+0.05,2.05-j), P(i+0.95,2.95-j));
-      }
-
-  end();
-}
-
diff --git a/graphics/epix/doc/manual.pdf b/graphics/epix/doc/manual.pdf
deleted file mode 100644
index bd8fc76619..0000000000
--- a/graphics/epix/doc/manual.pdf
+++ /dev/null
diff --git a/graphics/epix/doc/manual.tex b/graphics/epix/doc/manual.tex
deleted file mode 100644
index 71aa59aa97..0000000000
--- a/graphics/epix/doc/manual.tex
+++ /dev/null
@@ -1,5030 +0,0 @@
-%% Version 1.2.0
-\documentclass[12pt]{book}
-\usepackage{amsmath,latexsym,epic,eepic,pstricks,xcolor,comment}
-\usepackage[dvips,hyperref]{hyperref}
-
-\usepackage{makeidx}
-\makeindex
-
-\renewcommand{\thefigure}{\arabic{chapter}.\arabic{figure}}
-
-\newcommand{\code}[1]{\texttt{#1}}
-\newcommand{\filename}[1]{\texttt{#1}}
-\newcommand{\Key}[1]{\texttt{#1}}
-\newcommand{\URL}[1]{\texttt{#1}}
-
-%% \setlength{\topmargin}{0.5in}
-\newcommand{\ePiX}{\code{ePiX}}
-\newcommand{\ext}{\code{ePiX\_ext}}
-\newcommand{\epix}{\code{epix}}
-\newcommand{\eepic}{\code{eepic}}
-\newcommand{\C}{\code{C}}
-\newcommand{\CXX}{\code{C++}}
-\newcommand{\pyepix}{\code{Pyepix}}
-
-\DeclareMathOperator{\clip}{clip}
-
-\newcommand{\Header}[1]{\smallskip\noindent\texttt{#1}%
-  \index{Header file!{#1}@\texttt{#1}}\quad}
-
-%% Substitution commands easily removable by sed for texinfo:
-%% Remove recalcitrant chunks,
-\newcommand{\texicomment}{}
-\newcommand{\texicommentend}{}
-
-%% mark simple math,
-\newcommand{\teximath}[1]{$#1$}
-%% make function index entries,
-\newcommand{\findex}[1]{}
-
-%% top-level division (first argument for texinfo node name)
-\newcommand{\texinfochapter}[2]{\chapter{#2}}
-\newcommand{\texinfoappendix}[2]{\chapter{#2}}
-
-%%\renewcommand{\subsection*}[1]{\subsection{#1}}
-
-\title{ \ePiX\ Tutorial and  \\ Reference Manual}
-\author{Andrew D. Hwang \\ 
-  Department\ of Math and CS \\ 
-  College of the Holy Cross}
-\date{Version 1.2, September, 2007}
-
-\begin{document}
-
-\maketitle
-
-\tableofcontents
-
-\texinfochapter{1}{Introduction}
-
-\ePiX, a collection of batch utilities, creates mathematically
-accurate figures, plots, and animations containing \LaTeX\ typography.
-The input syntax is easy to learn, and the user interface resembles
-that of \LaTeX\ itself: You prepare a scene description in a text
-editor, then ``compile'' the input file into a picture. \LaTeX- and
-web-compatible output types include a \LaTeX\ picture-like environment
-written with \code{PSTricks}, \code{tikz}, or \code{eepic} macros;
-vector images (\code{eps}, \code{ps}, and~\code{pdf}); and bitmapped
-images and movies (\code{png}, \code{mng}, and~\code{gif}).
-
-\ePiX's strengths include:
- 
-\begin{itemize}
-\item Quality of output: \ePiX\ creates accurate, publication-quality
-  figures whose appearance matches that of \LaTeX.  Typography may be
-  put in a figure as easily as in an ordinary \LaTeX\ document.
-  
-\item Ease of use: Figure objects and their attributes are specified
-  by simple, descriptive commands.
-  
-\item Flexibility: Objects are described by attributes and Cartesian
-  location; as in \LaTeX, printed appearance is determined when the
-  figure is compiled. A well-designed figure can be altered
-  dramatically, yet precisely, with command-line switches or minor
-  changes to the input file.
-  
-\item Power and extendibility: \ePiX\ inherits the power of \CXX\ as a
-  programming language; variables, data structures, loops, and
-  recursion can be used to draw complicated plots and figures with
-  just a few lines of input. External code can be incorporated in a
-  figure with a command line option or by using a Makefile.
-  
-\item Economy of storage and transmission: For a document containing
-  many figures, a compressed tar file of the \LaTeX\ sources and
-  \ePiX\ files is typically a few percent the size of the compressed
-  PostScript file.
-  
-\item License: \ePiX\ is \emph{free software}.\index{Free software}
-  You are granted the right to use the program for whatever purpose,
-  and to inspect, modify, and re-distribute the source code, so long
-  as you do not restrict the rights of others to do the same. In
-  short, the license is similar to the terms under which theorems are
-  published.
-
-\end{itemize}
-
-
-\ePiX\ facilitates logical, as opposed to visual, structuring of
-mathematical figures, analogous to the relationship between \LaTeX\
-and a word processor. A few stylistic defaults streamline the creation
-of simple figures, but there are few internal restrictions on the
-contents or appearance of a figure; aesthetic and practical decisions
-are left to you.
-
-If you are a:
-
-\begin{itemize}
-
-\item Potential user, you may wish to skip immediately to ``Software
-  Dependencies'' before investing additional time.
-
-\item New user, proceed from here until you have enough understanding
-  to run the software, then experiment with the samples files while
-  reading Chapter~\ref{chapter:started}, or return to the manual as
-  needed.
-
-\item More advanced user, browse at will, probably starting with
-  Chapter~\ref{chapter:ref-man}.
-
-\end{itemize}
-
-This manual is relatively conversational, and occasionally redundant,
-especially between portions meant for readers at different levels of
-familiarity. Throughout, you are assumed to be familiar with \LaTeX\
-and basic linear algebra: the description of points, vectors, lines,
-and planes in three-dimensional space. Other material, such as \CXX\
-syntax, is introduced as needed.
-
-
-\section{Changes in Version~1.2}
-
-\ePiX~1.2.x has been written almost entirely from scratch.  The
-conceptual model is unchanged, but there are a few changes of
-syntax. If you're new to~\ePiX, please skip straight to
-Section~\ref{section:software_deps}.
-
-
-\subsection{Syntax Changes}
-
-Except as noted below, \ePiX~1.0 files will compile under
-Version~1.2. Generally, global variables have been deprecated or
-removed, and should be replaced by function calls in new files. The
-following changes are either required, or else strongly recommended
-(and may become mandatory).
-
-\begin{itemize}
-
-\item (Mandatory) The global variable \verb+tix+ in a \filename{flix}
-  file must be manipulated through the function \verb+tix()+.
-
-\item (Mandatory) The command \code{use\_pstricks()} is obsolete.
-  PSTricks output is obtained systematically as an output format.
-
-\item (Mandatory) Deprecated ``aliases'' no longer exist:
-  \code{triple} (for the \code{P} class), \code{D}~(for \code{Deriv}),
-  and \code{I}~(for \code{Integral}). Lowercase trig function names
-  conflicted with the standard namespace and have been removed.
-
-\item (Mandatory) Geometric object commands (\code{circle},
-  \code{plane}, \code{segment}, and~\code{sphere}), which formerly
-  created class objects, now perform drawing just as \code{ellipse},
-  \code{line}, \code{rect}, etc., do. The classes are available with
-  capitalized names (\code{Circle}, etc.).
-
-\item (Mandatory) Camera orientation is controlled with functions
-  named \code{tilt}, \code{pan}, and~\code{roll}; each rotates
-  the camera about an axis through the viewpoint, not through the
-  target.
-
-\item (Recommended) The global size variables \verb+x_min+,
-  \verb+x_max+, \verb+y_min+, \verb+y_max+, \verb+x_size+, and
-  \verb+y_size+ should be replaced by the function calls
-  \verb+xmin()+, etc. (No underscores.)
-
-\item (Suggested) The camera may be accessed through the function
-  \code{cam()}.
-
-\item (Suggested) The size and bounding box are given in one command,
-  such as \code{picture(P(-1,0), P(1,1), "4x3in")}. The old syntax
-  will be retained indefinitely.
-
-\end{itemize}
-
-
-\subsection{New Features}
-
-\begin{itemize}
-
-\item Output is cleanly separated from the internal representation.
-  Figures may be written with a choice of macros---\code{PSTricks},
-  \code{tikz}, and \code{eepic} at present---and new output types
-  are easily coded so long as the format supports arbitrary line
-  segments, color, and the ability to place a \LaTeX\ box at a
-  specified location.
-
-\item Colors are a manipulable data type, available in RGB, CMY, CMYK,
-  and Gray models. \filename{xcolor}-style operations, such as color
-  model conversion, blending, superposition, and inversion are
-  provided.
-
-  The camera has a filter which affects the colors of all scene
-  elements. Filters performing CMYK separation are provided.
-
-\item Color filling is controlled with declarations, similarly to line
-  colors in \ePiX~1.0.  Arrows and markers of type spot, dot, ddot,
-  and~circ are now colored like other markers.  Parametric surfaces
-  may be color-shaded.
-
-  If a figure contains many shaded elements, a color-capable output
-  format (e.g.\ \code{PSTricks}~or \code{tikz}) should be used for
-  efficiency.  Filled regions are implemented as fine hatching in
-  \filename{eepic}.
-
-\item An \code{axis} class provides coordinate axes with labels in a
-  variety of styles: decimals or scientific notation of specified
-  precision, fractions, trig fractions, logarithmic labels in
-  arbitrary (integer) base, and user-supplied styles.
-
-\item \ePiX~1.2.x performs page layout. Sub-figures may be manipulated
-  flexibly. The sample files give several applications.
-
-\item Non-member intersection operators for circles, planes, spheres,
-  and segments are provided.  A ``non-generic'' intersection does not
-  throw an exception, but instead returns an undrawable ``malformed''
-  object.
-
-\end{itemize}
-
-
-\section{Software Dependencies}
-\label{section:software_deps}
-
-\index{Installation|(}
-\index{Mac OS X}
-
-If you run GNU/Linux, a BSD, or Solaris, you probably have (and can
-surely install) all the external software needed to use \ePiX.  On
-Mac~OS~X, you will need the Apple developer tools and an X~server
-(XCode and XDarwin on the Tiger disks), and the free~\code{fink}
-package manager to build a GNU environment.  For Windows, you'll need
-to install Cygwin and several packages. Detailed instructions are
-given below.
-
-``Under the hood'', an input file is successively converted to a
-\LaTeX\ picture; \code{dvi}; PostScript, \code{pdf}~or \code{eps}; and
-if desired, to a bitmapped image or movie.  Four shell
-scripts---\epix, \code{laps}, \code{elaps}, and~\code{flix}---automate
-the various file format conversions.
-
-\ePiX\ consists of a \CXX\ library, header, and shell scripts, and
-requires GNU \code{bash} and a compiler \emph{for normal use}.  For
-complete functionality, you need \code{g++} (Version~3.2 or later),
-\code{bash}, a text editor (\ePiX\ works particularly well with
-\code{emacs}), a \LaTeX\ distribution, \code{Ghostscript}, \code{gv}
-(or your favorite PS/PDF previewer), and \code{ImageMagick}. GNU
-\code{grep} and \code{sed} are good to have.  You may need additional
-``developer packages'' (\code{binutils}, \code{make}) in order to
-build \ePiX.  The more up to date your software is, the better your
-experience is likely to be, but bleeding edge versions are not
-necessary, or even always desirable.
-
-Aside from their reliance on specific programs, \ePiX's shell scripts
-are written using Unix-style pathnames. Thus, the most straightforward
-way to use \ePiX\ is to install a GNU environment.
-
-Jay Belanger's \code{emacs} mode allows you to write, compile, and
-view \ePiX\ figures without leaving \code{emacs}. If you use another
-editor, you'll want to create template source files so you don't have
-to type boilerplate code each time you write a new figure.
-\index{Emacs@\code{emacs}}
-
-
-\subsection{Setting up an Environment Under  Windows}
-
-\index{Windows operating system|(}
-\begin{comment}
-Version~1.0.4 of \ePiX\ has been implemented in Python~2.2 by Andrew
-Sterian, making \ePiX\ available on any platform that supports Python,
-and without requiring a \CXX~compiler or~\code{bash}.  Python is a
-GPL-ed scripting language, and is available with a Windows installer
-and detailed instructions.  The easiest alternative for Windows users
-is probably to install Python~2.2 or later (if necessary) and
-\code{Pyepix}. The \code{pyepix} project home page is:
-\URL{claymore.engineer.gvsu.edu/~steriana/Python/index.html}
-\end{comment}
-
-Cygwin can be used to run \ePiX\ under Windows. Download
-\filename{setup.exe} from \URL{www.cygwin.com}, then install the
-packages you need. The following are recommended, and sufficient for
-the actions described in this manual.
-\begin{verbatim}
-(Archive)    bzip2, tar
-(Devel)      binutils, coreutils, gcc, gcc-g++, make, sed
-(Editors)    emacs, emacs-X11, vim
-(Graphics)   ImageMagick, ghostscript-base, ghostscript-x11, gv
-(Publishing) tetex (all)
-(Shells)     bash, bash-completion
-(X11)        X-start-menu-icons, X-startup-scripts,
-             XFree86-lib-compat, xorg-x11-fscl, xorg-x11-fsrv
-\end{verbatim}
-\index{Windows operating system|)}
-
-
-\section{Installation}
-
-\ePiX\ is distributed over the World-Wide Web as source code. Packages
-may be found at \URL{mathcs.holycross.edu/\~{}ahwang/epix/ePiX.html}
-The latest stable release is also on the CTAN mirrors, in the
-\code{graphics} directory.  (Some users of Red Hat have reported file
-permission problems when unpacking the CTAN tarballs. If you encounter
-this difficulty, please try downloading the sources from the project
-main page.)  Unpack the compressed tar file with the appropriate
-command:
-\begin{verbatim}
-  tar -zxvf epix-x.y.z.tar.gz
-  tar -jxvf epix-x.y.z.tar.bz2
-\end{verbatim}
-(\code{x.y.z}~is the version number) or, if your \code{tar}
-doesn't do decompression,
-\begin{verbatim}
-  gunzip -c epix-x.y.z.tar.gz | tar -xvf -
-  bzcat epix-x.y.z.tar.bz2 | tar -xvf -
-\end{verbatim}
-\code{cd} to the source directory, \filename{epix-x.y.z}.  The
-\filename{INSTALL} file contains detailed installation instructions.
-If you're impatient, the short of it is \code{./configure [--options];
-  make; make install}.  Run \code{./configure --help} for a list of
-options.
-
-By default, \ePiX\ installs in subdirectories of
-\filename{/usr/local}; if you want to install elsewhere, supply
-\code{./configure} with the appropriate \code{--prefix}. You may also
-want to consult \filename{POST-INSTALL} for information on setting
-your \code{PATH} variable so your shell can find \ePiX.  The manual
-and sample files are in \filename{/usr/local/share/doc/epix}.
-\index{Installation|)}
-
-
-\subsection{Development}
-
-There are two mailing lists, one for user questions, one for
-development discussion. Please visit
-\URL{savannah.nongnu.org/mail/?group=epix} to subscribe.
-
-
-\texinfochapter{2}{Getting Started}
-\label{chapter:started}
-
-This chapter describes the basics of creating figures in \ePiX\ for
-readers familiar with \LaTeX\ but completely new to~\CXX. No detailed
-knowledge of~\CXX\ is needed to use \ePiX, only a bit of grammar that
-is easily absorbed by example.
-
-Section~\ref{section:running} describes the commands (shell scripts)
-comprising \ePiX, and explains how to set up a graphical environment
-using standard *nix programs. Section~\ref{section:overview} briefly
-describes figure creation. Section~\ref{section:tutorial} presents a
-few files side-by-side with their output, and should be read at a
-computer so you can run the exercises.
-
-
-\section{Running \ePiX}
-\label{section:running}
-
-An ``input file'' is a human-written figure specification containing
-\ePiX\ commands. An ``output file'' is machine-created, and is
-included directly into a \LaTeX\ document with the appropriate
-packages.
-
-Conversion (``compiling'' a figure) is accomplished with four shell
-scripts, \code{laps}, \code{epix}, \code{elaps}, and \code{flix}.
-Each script has a preferred extension for its input files, and is
-invoked with a command of the form
-\begin{verbatim}
-  <script> [options] <input file(s)>
-\end{verbatim}
-Often, no options are necessary.  \code{<script> --help}
-describes \code{<script>}'s options.
-\texicomment
-Figure~\ref{fig:programs} (page~\pageref{fig:programs}) diagrams the
-shell scripts and the file types they process.
-\texicommentend
-
-By default, output file names are constructed by replacing the input
-extension with the (preferred) output extension. For brevity,
-extensions may be omitted. If the script has doubts about your intent,
-it proceeds with default behavior and prints a warning message.
-
-The author is a great fan of \Key{TAB} completion, under which a
-shell, based on what has been typed so far, automatically fills in a
-command when the \Key{TAB} key is pressed.  \ePiX\ comes with code
-snippets that complete intelligently when the first part of a command
-is one of the shell scripts. For example, if command completion is
-active, typing \code{epix} \Key{TAB} prints only names of \code{epix}
-input files. To use this feature, you must install Ian MacDonald's
-\code{bash completion} package. The \filename{INSTALL} and
-\filename{POST\_INSTALL} files contain details.
-
-
-\subsubsection*{\code{laps}}
-
-\code{laps} performs \LaTeX\ to PostScript/PDF conversion, and is
-independent of the rest of \ePiX. By default, \code{laps} invokes
-\LaTeX~and \code{dvips}. The option \code{--pdf} creates a PDF~file by
-post-processing the PostScript with~\code{ps2pdf}.  Other \TeX-family
-processors (\code{pslatex}, \code{pdftex}, etc.) may be used instead
-of~\LaTeX\ by invoking \code{laps} with an appropriate option.
-
-
-\subsubsection*{\code{epix}}
-
-\code{epix} compiles an input file into a \LaTeX\ picture.  The input
-file should have extension \filename{xp} (for eXtended Picture).  Jay
-Belanger's \code{emacs} mode is Highly Recommended; the installation
-procedure can be found in the \filename{POST\_INSTALL} file. When this
-mode is active, \code{emacs} automatically inserts a preamble template
-when a new \filename{xp} file is created. In addition, you can peruse
-\ePiX's info file, or format, compile, and preview files, all from
-within \code{emacs}.
-\index{Emacs@\code{emacs}}
-
-Output files from the script \code{epix} have extension
-\filename{eepic}, after Conrad Kwok's enhancements to the \LaTeX\
-picture environment. In Version~1.2, however, an output file need not
-contain \code{eepic} macros at all.
-
-An output file is \code{input} directly into a \LaTeX\ document whose
-preamble contains appropriate \code{usepackage} lines.
-\texicomment
-\begin{center}
-  \begin{tabular}{cc}
-    Format & Required Package(s) \\
-    \hline
-    \code{eepic} & \code{epic,eepic,xcolor} \\
-    \code{pst}   & \code{pstricks} \\
-    \code{tikz}  & \code{tikz}
-  \end{tabular}
-\end{center}
-\texicommentend
-Rotated text requires the \code{rotating} package.
-
-
-\subsubsection*{\code{elaps}}
-
-\code{elaps} creates stand-alone vector images (\filename{eps}~or
-\filename{pdf}) from \code{epix} input files or \filename{eepic}
-figures, even those not produced with \code{epix}.  \code{elaps}
-automatically loads the \LaTeX\ packages needed for features described
-in this manual. Additional \LaTeX\ packages and \code{dvips} options
-may be specified on the command line.
-
-
-\subsubsection*{\code{flix}}
-
-\code{flix} creates bitmapped images and movies,
-Section~\ref{section:animation}. Input files should have extension
-\filename{flx}, and must contain a valid \code{epix} header as well as
-additional code. Jay Belanger's \code{emacs} mode facilitates creation
-of \code{flix} files.
-
-
-\section{The Drawing Model}
-\label{section:overview}
-
-To draw a figure manually, you select a sheet of paper of appropriate
-size and add paths, markers, and labels. These scene elements have
-attributes (line color, line width, fill color, font size, etc.)
-affecting their appearance. 
-
-\index{canvas}
-\ePiX's drawing model behaves similarly.  A \code{picture} command
-sets the \emph{canvas} (or logical drawing area, a Cartesian
-rectangle) and the true size of the final figure. A \code{begin}
-command initializes the ``virtual paper'' for drawing. Subsequent
-\emph{drawing commands} add objects to the scene: lines, curves,
-function plots, labels, and the like. The printed appearance of scene
-elements is determined by the current ``attribute state'' and
-controlled by \emph{style declaration} which remain in effect until
-superseded. Finally, an \code{end} command closes the figure and
-prints it to the output file.
-
-In this manual, command descriptions follow a few
-conventions. Optional arguments are enclosed in square brackets. A
-\code{len} argument is either a number (representing a length in
-\code{pt}) or a double-quoted string containing a number and a
-two-letter \LaTeX\ length unit, such as \code{"1.5pt"} or
-\code{"6cm"}.  A \code{color} argument is a named primary
-(\code{Red()}, \code{Cyan()}, \code{White()}, etc.), or a \code{Color}
-specified by densities (\code{RGB(r,g,b)}, \code{CMY(c,m,y)}, etc.)
-
-\begin{itemize}
-
-\item Fill color: \code{fill(color)}, \code{nofill()}.
-
-\item Line color and width: \code{plain([color])},
-    \code{bold([color])}.
-
-\item Text size: \code{font\_size([size])}, returns to
-    \code{normalsize} if no argument is given.
-
-\end{itemize}
-
-\noindent A complete list of style commands is found in
-Section~\ref{section:quickref}, starting on
-page~\pageref{section:quickref}.
-
-To handle three-dimensional scenes, a \code{camera} performs point
-projection from a selected spatial location to the canvas. As a user,
-you'll need to control relatively few of the \code{camera}'s
-parameters. Keep in mind, however, that elements are added to a scene
-in the same order their commands appear in the output file, and that
-later elements generally cover earlier ones. Some three-dimensional
-scenes require manual ordering of the input file; such ordering is
-dependent on the \code{camera}'s location.
-
-By default, \ePiX\ draws thin, solid, black lines, performs no filling
-of regions, prints text in a 12~pt Roman font, and looks down the
-\teximath{z}~axis from a large distance, giving orthogonal projection
-on the \teximath{(x,y)}~plane. When the \code{camera} is moved, the
-\teximath{z}~axis points vertically up on the page.
-
-
-\section{Tutorial}
-\label{section:tutorial}
-
-This section presents sample input files side-by-side with their
-output so you can compare what you write with what you'll see on the
-screen or page.  \ePiX\ provides standard drawing capabilities, but
-like all software has its own idioms and personality. The basic
-syntax, which comes from \code{C}/\CXX, should be mostly
-self-explanatory. One-line comments begin with the
-string~``\verb+//+''.
-
-
-%%\index{Emacs@\code{emacs}}
-\index{Graphical interface}
-To use the sample files interactively, you'll need working software:
-\filename{bash}, \filename{emacs}, \ePiX, \filename{g++},
-\filename{gv}, and a running X~server. To complete your ``GUI'',
-start~\filename{gv} and select ``Watch file'' from the ``State''
-menu. The loaded file will update automatically when it changes.
-
-Create a ``scratch'' directory, \code{cd} into it, and run the command
-\begin{verbatim}
-  tar -zxf /usr/local/share/doc/epix/sample_src.tar.gz
-\end{verbatim}
-(Change the path as appropriate for your installation.)  This unpacks
-copies of the sample files into your scratch directory, including all
-the files mentioned in this manual. The \filename{README} file serves
-as a table of contents.
-
-Open a sample file in \filename{emacs}, compile it from the drop-down
-menu (or with the keyboard command), then open the \filename{EPS} file
-in~\filename{gv}. Now you're ready to follow the tutorial
-interactively. A few suggested exercises are included with each
-file. Naturally, as you study more files, you'll be able to make more
-interesting changes on your own.
-
-
-\subsubsection*{Basic Drawing}
-
-The first sample, \filename{hello.xp}, contains code needed to specify
-the figure's size, followed by the classic greeting. The \code{border}
-command draws a box around the figure in the specified color and
-width, and serves here merely to delimit the output from the
-surrounding page.
-\begin{verbatim}
-/* -*-ePiX-*- */
-#include "epix.h"      // These lines are analogous
-using namespace ePiX;  // to a usepackage command.
-
-int main()
-{
-  picture(P(-1,-1), P(1,1), "2 x 1in"); // corners, true size
-
-  begin(); // ---- Figure body starts here ----
-
-  border(Black(), "1pt"); // color, line width
-
-  font_size("Huge");  // May be any font size, e.g. "scriptsize"
-  label(P(0,0), "Hello, world!");
-
-  end();   // ---- End figure; write output file ----
-}
-\end{verbatim}
-
-\begin{center}
-  \input{hello.eepic}
-\end{center}
-
-\begin{itemize}
-
-\item Change the color and width of the
-  border. (\code{RGB(r,g,b);} creates an RGB color, CMY colors are
-  analogous. Named primaries are available. The densities should be
-  between \teximath{0}~and \teximath{1} for ``expected'' behavior.)
-
-\item Add \code{backing(Cyan());} after the \code{border} command. 
-
-\item Put the command \code{crop\_ellipse();} before the \code{border}
-  command. Permute the \code{crop\_ellipse} command with the
-  \code{border} and \code{backing} lines, and note how the attribute
-  (\code{crop}) affects objects (\code{border}, \code{backing}).
-
-\end{itemize}
-
-
-\subsubsection*{Geometric Objects}
-
-Our next file uses simple objects to draw a 2-D house-and-sun scene.
-
-\begin{verbatim}
-int main()
-{
-  picture(P(0,0), P(5,2), "3.75 x 1.5in");
-
-  begin();
-
-  triangle(P(0.9, 1), P(3.1, 1), P(2, 1.5)); // vertices
-  circle(P(4,1.5), 0.25); // center and radius
-
-  rect(P(1,0), P(3,1)); // opposite corners
-
-  fill(Black(0.1));     // light gray
-  rect(P(2.3,0), P(2.7,0.8)); // the door
-  nofill();
-
-  bold();               // draw thicker lines
-  grid(P(1.4, 0.2), P(2, 0.6), 2, 2); // corners, number of squares
-
-  line(P(xmin(), 0), P(xmax(), 0));   // endpoints
-
-  end();
-}
-\end{verbatim}
-
-\begin{center}
-  \input{objects.eepic}
-\end{center}
-
-\begin{itemize}
-
-\item Add declarations such as \code{bold(RGB(1,0.9,0.5))} or
-  \code{fill(Yellow())} to color the scene. (Color and filling are
-  orthogonal attributes.)
-\end{itemize}
-
-\noindent The sample file \filename{house.flx} uses loops to draw
-gradient fills of the lawn, sky, and sun, and animates a sunset.
-
-
-\subsubsection*{Function Plotting}
-
-Plotted functions must be defined in the ``preamble'', before
-\code{main}. ``High-level'' elements---coordinate axes and grids, axis
-labels, and graphs---are drawn with mnemonically-named commands.
-\begin{verbatim}
-// double = double-precision floating point
-double f(double x) { return 0.75*Sin(x) - 0.25*Sin(2*x); }
-
-int main()
-{
-  picture(P(-2,-1), P(2,1), "5 x 1in"); // [-2,2] x [-1,1]
-
-  begin();
-  revolutions(); // set angle units, [0,1] = one turn
-
-  h_axis(16); // axes w/default endpts
-  v_axis(4);
-  h_axis_labels(4, P(0,-4), b); // shift down 4pt, align below
-
-  plain(Red());
-  plot(f, xmin(), xmax(), 120); // use 120 intervals
-
-  end();
-}
-\end{verbatim}
-
-\begin{center}
-  \input{plotting.eepic}
-\end{center}
-
-\begin{itemize}
-
-\item Define and plot some different functions; adjust the bounding
-  box as necessary. (Use repeated multiplication for polynomials.
-  The \code{polarplot} command graphs \teximath{r=f(\theta)}.)
-
-\item Change the arguments to \code{h\_axis\_labels}. The first
-  specifies the number of intervals to label; the second gives the
-  label offset in~\code{pt}. The last puts each label below~(\code{b})
-  its Cartesian location.
-
-\end{itemize}
-
-
-\subsubsection*{Multivariable Plotting}
-
-Functions of two or three variables are defined just like functions of
-one variable, but for plotting the return type must be a
-point~(\code{P}), not a real number~(\code{double}). The \code{domain}
-class specifies the set of inputs to plot.
-
-\begin{verbatim}
-P f(double r, double th)
-{
-  return P(r*Cos(th), r*Sin(th), pow(r, 3)*Cos(3*th));
-}
-
-int main()
-{
-  picture(P(-1,-1), P(1, 1), "2 x 1in");
-  begin();
-  pst_format();     // use PSTricks macros for output
-
-  // corners ([0,1] x [0,2\pi]) and fineness
-  // (8x40 rectangles, plotted at 16x120 resolution)
-  domain R(P(0,0), P(1, 2*M_PI), mesh(8,40), mesh(16,120));
-
-  camera.at(P(3,1,2)); // set the viewpoint
-  arrow(P(0,0,0), P(1.25,0,0)); // coordinate axes
-  arrow(P(0,0,0), P(0,1.25,0));
-
-  plain(Blue(1.2)); // line color and width
-  fill(Yellow());   // shading color
-  surface(f, R);
-
-  end();
-}
-\end{verbatim}
-
-\begin{center}
-  \input{plotting2.eepic}
-\end{center}
-
-
-\subsubsection*{Loops and Control Structures}
-\label{taylor_poly}
-
-A function can be defined by an arbitrary algorithm, and a
-\code{domain} may be used to plot a family of functions for several
-values of one variable.
-
-\begin{footnotesize}
-\begin{verbatim}
-P sin_n(double x, double n)     // Taylor polynomial of sin x
-{
-  const int N((int) floor(n));  // convert n to an index bound
-  const double sqx(-pow(x, 2)); // -x^2
-  double val(x), summand(x);
-
-  for (int i=1; i <= 2*N+1; i += 2)
-    {
-      summand *= (sqx/((i+1)*(i+2)));   // (-1)^i x^{2i+1}/(2i+1)!
-      val += summand;
-    }
-
-  return P(x, val);    // return (x, y)
-}
-
-int main()
-{
-  picture(P(0, -1), P(6*M_PI, 1), "5 x 1in");
-
-  begin();
-
-  set_crop();
-  bold(Green());
-  plot(Sin, 0, xmax(), 120);
-
-  domain R(P(0,1), P(6*M_PI, 41), mesh(60, 40), mesh(120, 40));
-  for (int i=3; 0 <= i; --i)  // print in descending degree
-    {
-      bold(RGB(0.25*i, 0, 1-0.25*i)); // degree-dependent color
-      plot(sin_n, R.slice2(5*i+1));   // plot for n = 5i+1
-    }
-  end();
-}
-\end{verbatim}
-\end{footnotesize}
-
-\begin{center}
-  \input{plotting3.eepic}
-\end{center}
-
-
-\subsubsection*{Page Layout}
-
-Page layout can be composed from sub-pages with \code{screen} objects.
-In the loop body below, objects are added to the ``active''
-\code{screen}, then \code{inset} into the ``canvas'', the screen
-representing the entire figure.
-
-\begin{verbatim}
-P f(double u, double v)
-{
-  return P((u-v)*(u+v), 2*u*v, u);
-}
-
-int main()
-{
-  picture(P(0,0), P(2,3), "5x7.5in"); // overall size
-
-  begin();
-
-  domain R(P(-1,-1), P(1,1), mesh(12,12), mesh(24,24));
-
-  for (int i=0; i<2; ++i)
-    for (int j=0; j<3; ++j)
-      {
-        screen my(P(-3,-3), P(3,3));
-        activate(my);
-        border(Red(0.6), "1pt");
-        // frame-dependent viewpoint
-        camera.at(sph(10, (2*j+i+1)*M_PI/8, M_PI/6));
-
-        plot(f, R);
-        arrow(P(0,0,0), 2*E_1);
-        arrow(P(0,0,0), 2*E_2);
-        // SW corner at (i, 2-j), padded by 0.05 on all sides
-        inset(P(i+0.05,2.05-j), P(i+0.95,2.95-j));
-      }
-
-  end();
-}
-\end{verbatim}
-
-\begin{center}
-  \input{layout.eepic}
-\end{center}
-
-
-\section{\CXX\ Basics}
-
-\index{Cplusplus@\CXX|(}
-An \ePiX\ source file is a \CXX~program. If you've successfully
-modified and compiled the sample files, you know enough~\CXX\ to use
-\ePiX. In the author's experience, \code{C}~grammar suffices for most
-applications.  An excellent introduction to definitions of functions
-and variables, control statements, and overall program structure is
-Kernighan~and Ritchie's \emph{The \code{C} Programming Language},
-second edition~\cite{KnR}.
-
-
-\subsection{File Format}
-
-\index{Emacs@\code{emacs}}
-Jay Belanger's \code{emacs} mode for \code{ePiX} inserts a file
-template when an empty buffer is opened with the extension~\code{xp}.
-This section explains the purposes served by the template. A few
-additional remarks may help you avoid basic syntax pitfalls.
-
-A \CXX\ file consists of ``statements'', analogous to ordinary
-sentences. Common types include \emph{declarations} (which
-``register'' a function, variable, or type name with the compiler),
-\emph{definitions} (which assign meaning to declared names), and
-\emph{function calls} (which cause a named function to execute).  Most
-statements in an \ePiX\ input file are function calls (``commands'').
-Plain declarations are relatively rare in user files, since a
-definition serves to declare any new names that it contains.
-
-Every statement ends with a semicolon, and conventionally a file
-contains at most one statement per line.  The compiler ignores
-nearly all whitespace (spaces, tabs, and newlines), which should be
-used freely to make files easy to read.  Other punctuation
-(periods, commas, (semi)colons, parentheses, braces, and quotes)
-dictates file parsing, and must adhere stringently to grammar.
-
-An \ePiX\ file always begins with the lines
-\findex{include}
-\begin{verbatim}
-#include "epix.h" // N.B. pre-processor directive, no semicolon
-using namespace ePiX;
-\end{verbatim}
-The first line is analogous to a \LaTeX\ \code{usepackage} command: It
-loads the contents of the ``header'' file \filename{epix.h}, importing
-the names of commands provided by~\ePiX.  To avoid name conflicts,
-\ePiX's commands are enclosed in a ``namespace''. For example, the
-\code{label} command is actually known to the compiler as
-\code{ePiX::label}. The second line above tells the compiler to apply
-the prefix tacitly.
-
-
-\subsection{Variables and Functions}
-%% \index{Variable}\index{Variable!names}
-%% \index{Function}\index{Function!names} 
-
-Definitions of variables and functions play the same role in a figure
-that macro definitions play in a \LaTeX\ document: gathering and
-organizing information on which the figure depends. A variable is
-defined by supplying its type, name, and initial value. By far the
-most common data types in~\ePiX\ are \code{double} (double-precision
-floating point number), \code{P}, and \code{int}. The name of a
-variable may consist (only) of letters (including the underscore
-character) and digits, and must begin with a letter:
-\begin{verbatim}
-my_var, var2,    MY_var, aLongVariableName;  // valid
-my-var, 2var, \v@riable, $x, ${MY_VARIABLE}; // not valid
-\end{verbatim}
-Variable names are case-sensitive, and numerous (non-universal)
-conventions govern the significance of capitalization. Generally, make
-names descriptive but not unwieldy, and avoid language keywords (such
-as \code{const}, \code{true}, \code{double}, \code{class}, or
-\code{public}) and names that begin with an underscore.
-
-A function accepts ``arguments'' and ``returns a value''. To define a
-function in~\CXX, you must specify the return type, the name of the
-function, the types of the arguments, and the algorithm by which the
-value is computed from the inputs.  The code block
-\begin{verbatim}
-double f(double x) 
-{ 
-  return sqrt(1-x*x); 
-}
-\end{verbatim}
-specifies the \code{double}-valued function~\teximath{f} of one \code{double}
-variable defined by the formula \teximath{f(x)=\sqrt{1-x^2}}.
-
-
-\subsection{Comments}
-
-\CXX\ has two types of comments. \code{C}-style comments, which may
-span several lines, are delimited by the strings \code{/*}~and
-\code{*/}. One-line comments, analogous to the \LaTeX~\code{\%}, are
-begun with \code{//}. A one-line comment may appear within a multi-line
-comment, but a \code{C}-style comment may not; the compiler will
-mistake the first~\code{*/} it encounters as the end of the current
-multi-line comment.
-
-
-\subsection{Program Execution}
-
-All the ``action'' in a \CXX\ program occurs inside the special
-function~\code{main}. Running a compiled \CXX~program is viewed by the
-operating system as calling the program's \code{main} function. The
-return value (an \code{int}) is the program's exit status.  The
-contents of the output file start with \code{begin()} and terminate
-with \code{end()}.  Intervening statements constitute the \emph{body}
-of the file.
-
-In \CXX, a function may not be defined inside another function. Thus,
-variables may be defined inside \code{main}, but functions cannot be.
-
-
-\subsection{Strings and Raw Output} 
-
-In \CXX, a \code{string} is a sequence of characters. Most
-\code{string}s in \ePiX\ input files are \emph{literals},
-double-quoted \code{string}s whose value is read from the input. In a
-string literal, backslash is an escape character; a single backslash
-is produced by a double backslash in the input file.  Certain letters
-have special meanings when backslash-escaped, including ``\verb+\n+''
-(newline) and ``\verb+\t+'' (\Key{TAB}).  Unlike~\LaTeX, \CXX~does not
-require a space to separate an escape sequence from following text;
-the string ``\verb+\\textwidth+'' literally represents a \LaTeX\
-command, while ``\verb+\textwidth+'' is read ``\code{TABextwidth}'' by
-the compiler.
-
-Though not commonly needed, raw text can be printed to the output
-file. The functions \code{write}, \code{pre\_write}, and
-\code{post\_write} accept \code{string} arguments. \code{write} prints
-its argument where the call appears in the input file. The other
-functions print their arguments before or after the completed picture,
-respectively. These commands must be in the file body.  As an
-application, a complete \LaTeX\ \code{figure} environment (with
-caption and label) can be produced by an \ePiX\ file,
-Figure~\ref{fig:captioned}.
-
-\index{pre\_write}
-\index{post\_write}
-\index{write}
-\findex{pre\_write}
-\findex{post\_write}
-\findex{write}
-\begin{figure}
-\begin{footnotesize}
-\begin{verbatim}
-#include "epix.h"
-using namespace ePiX;
-
-int main()
-{
-  picture(P(-1,-1), P(1,1), "10cm x 3in);
-  begin();
-  pre_write("\\begin{figure}[hbt]"); // comes before the picture
-
-  post_write("\\caption{A \\LaTeX\\ figure.}"); // and after
-  post_write("\\end{figure}");
-
-  < ... other ePiX commands ... >
-  write("%% A comment near the end, but inside the picture.");
-  end();
-} // End of main()
-\end{verbatim}
-\end{footnotesize}
-\caption{Generating a self-contained figure in \ePiX.}
-\label{fig:captioned}
-\end{figure}
-
-
-\subsection{Conditionals and Loops}
-
-An algorithm's behavior usually depends on internal state. A
-\emph{conditional statement} causes blocks of code to be executed
-according to criteria. A \emph{loop} repeatedly executes a code
-block, usually changing the values of variables in a predictable way,
-so that the loop exits after finitely many traversals.
-
-\texicomment
-Figure~\ref{fig:gcd} illustrates conditionals and loops with
-Euclid's algorithm for the greatest common divisor. Three pieces of
-notation require explanation: \code{j\%i} means~``\teximath{j\pmod i}'',
-\code{||} is logical~``or'', and \code{==} is ``test for equality''.
-(A single~``\code{=}'' is the assignment operator.)
-
-\index{Function!Euclidean algorithm}
-\begin{figure}[hbt]
-\begin{footnotesize}
-\begin{verbatim}
-int gcd (int i, int j)
-{
-  int temp(i);  // initialization syntax
-    if (i==0 || j==0)
-        return i+j;    // define gcd(k,0) = k
-
-    else {
-        if (j < i)     // swap them
-            {
-                temp = j;
-                j = i;
-                i = temp;
-            }
-        // the work is done here...
-        while (0 != (temp = j%i)) // assign temp, test for zero
-            {
-                j = i;
-                i = temp;
-            }
-        return i;
-    }
-}
-\end{verbatim}
-\end{footnotesize}
-\caption{Euclid's division algorithm in~\CXX.}
-\label{fig:gcd}
-\end{figure}
-\texicommentend
-
-%% \noindent For details on conditionals, or for more advanced techniques
-%% of \CXX\ programming, please consult a textbook or online tutorial.
-\index{Cplusplus@\CXX|)}
-
-%% Force previous two figures onto the same page
-%%\clearpage
-
-\section{Animation}
-\label{section:animation}
-
-\index{Animation|(} 
-\ePiX\ is well-suited to the creation of mathematically accurate
-animations: If a figure depends suitably upon a ``time'' parameter,
-then a loop can be used to draw the entire figure for multiple time
-values, yielding successive ``snapshots'' of the figure as time
-progresses. The shell script~\code{flix} automates the process of
-compiling a suitable input file into a collection of \filename{png}s
-and assembling these frames into a \filename{mng}~or \filename{gif}
-animation.  ImageMagick is the image-handling engine.
-
-A \code{flix} file is an \code{epix} file with two restrictions:
-\begin{itemize}
-  \item The \code{double} variable \code{tix()} is used as
-  ``clock''.
-
-  \item \code{main} accepts two command line arguments and sets
-  \code{tix()} accordingly.
-\end{itemize}
-\index{Emacs@\code{emacs}}
-Jay Belanger's \code{emacs} mode recognizes the file
-extension~\filename{.flx} and inserts template code if an empty buffer
-is opened. Creation of \code{flix} files is as easy as creation of
-\code{epix} files.  The \filename{samples} directory contains a
-handful of \code{flix} files that may be consulted for ideas.
-
-By default, \code{flix} creates movies with 24~frames, in which
-\code{tix()} runs from~0 to~1, and animates at
-\teximath{0.08}~sec/frame.  These and other parameters can be changed
-with command-line options.
-
-A ``typical'' \code{.flx} file may take 30~seconds to a few minutes to
-compile, depending on the number of frames and the complexity of each
-frame. To facilitate debugging, \code{elaps} can be run on a
-\code{flix} file. \code{elaps} runs in a fraction of the time, and if
-\code{elaps} can't produce a viewable image, \code{flix} will surely
-fail.  While running, \code{flix} prints a progress bar counting the
-number of \filename{eps} files that have been created.  There will be
-a delay of a few seconds (or more) after the last frame is produced,
-during which ImageMagick's \code{convert} utility assembles the movie.
-\index{Animation|)}
-
-
-\section{Layout Tricks}
-\label{section:layout}
-\index{Layout}
-
-\subsection{Stereograms}
-\index{Stereograms}
-Stereograms are created by drawing a single scene twice from slightly
-different points of view. To create a stereogram with \ePiX, write a
-``scene'' function containing the necessary drawing commands, then set
-the camera appropriately and call the scene function twice, once for
-each frame. 
-
-\subsubsection*{Crossed-Eyes Stereograms}
-
-The sample files \filename{lorenz.xp}~and \filename{twisted\_cubic.xp}
-use page layout to draw crossed-eyes stereograms. For each frame,
-create and activate a \code{screen}, set the camera, and call the
-scene function. The frames are inset side by side in the final
-picture. For a crossed-eyes stereogram, the frame from the
-``rightmost'' camera position is placed on the left.
-
-\subsubsection*{Bi-Color Stereograms}
-
-The sample files \filename{cube.flx}~and \filename{mirrorball.flx}
-contain animated red-cyan stereograms, suitable for viewing with 3-D
-glasses. The technique works best with black-and-white line drawings,
-but the basic approach is the same as for crossed-eyes stereograms:
-Create a scene function and call it twice, setting the camera
-appropriately. Layout is unnecessary since the frames are superposed.
-Pen colors should be close to red and cyan, but ``optimal'' choices
-depend on one's eyes and 3-D glasses.
-
-\subsubsection*{Stereographic Movies}
-
-Either form of stereogram can be animated in a \code{.flx} file, but
-keeping one's eyes properly crossed requires practice while most
-people can instantly see depth with 3-D glasses. As always when using
-\code{flix}, debug the scene with \code{elaps} before compiling a
-movie. If a stereoscopic effect is difficult to see in a still image,
-it will be even harder to perceive in a movie.
-
-
-\subsection{Inset Images}
-
-\ePiX\ can place external images into a figure, similarly to
-Rolf Niepraschk's \code{overpic} package. You provide the Cartesian
-center point, the file name, and optionally the true height and/or
-width of the image:
-\findex{label}
-\begin{verbatim}
-  label(P(a,b), "\\includegraphics[width=w,height=h]{file}");
-\end{verbatim}
-This effect requires the \filename{graphicx} package. When compiling a
-stand-alone graphic containing an external image, you must specify the
-\filename{graphicx} package on the command line: \code{elaps -p
-graphicx <file>}
-
-\texicomment
-\begin{figure}[hbt]
-  \begin{center}
-    \input{ePiX.eepic}
-  \end{center}
-  \caption{Visual guide to \ePiX's shell scripts}
-  \label{fig:programs}
-\end{figure}
-\texicommentend
-
-
-\texinfochapter{3}{Reference Manual}
-\label{chapter:ref-man}
-
-This chapter details \ePiX's capabilities, discussing attributes and
-data types, and listing available commands in the form
-\begin{verbatim}
-  label(P posn, [P offset], string text, [align]);
-  circle(P ctr, double rad=1, normal=P(0,0,1));
-\end{verbatim}
-As in Chapter~\ref{chapter:started}, function arguments are given by
-type (\code{P}, \code{double}, \code{string}, etc.)\ and name, or by
-name alone if the type is clear. Optional arguments are enclosed in
-square brackets. A few argument types, such as \code{[align]} above,
-admit only a small number of values; these cases are explained when
-the corresponding command is first introduced.
-
-A name followed by an equals sign and a value indicates a default
-argument; if omitted in an input file, the compiler substitutes the
-default value. Only trailing arguments may be specified this way.  For
-example, if the \code{rad} argument of the \code{circle} command is
-omitted, the \code{normal} argument \emph{must} be omitted as well.
-
-In an input file, only an argument's value is given, not the type:
-\begin{verbatim}
-  label(P(0,0), P(0,-4), "Hello world", b);
-  circle(P(0,-0.25), sqrt(2)); // use default normal
-\end{verbatim}
-
-Generally, \code{len} signifies either a number (representing a length
-in \code{pt}) or a double-quoted string containing a number and a
-two-letter \LaTeX\ length unit, such as \code{"1.5pt"} or
-\code{"6cm"}. \code{color} represents a \code{Color} object
-constructed from a named primary (\code{Blue()}, \code{Magenta(0.7)},
-etc.), a color specification (\code{RGB(r,g,b)}, \code{CMY(c,m,y)},
-etc.), or an operator applied to an existing \code{Color}.
-
-
-\section{File Structure}
-
-An \ePiX\ input file constitutes a short \CXX\ program. When this
-program is compiled and run by one of the shell scripts, it creates a
-figure file suitable for inclusion in \LaTeX.
-
-\index{Preamble}
-Like a \LaTeX\ document, an \ePiX\ file contains a \emph{preamble},
-which sets up a drawing environment, and a \emph{body}, which contains
-actual figure-generating commands.  The minimal file has the form
-\findex{picture}
-\findex{begin}
-\findex{end}
-\begin{verbatim}
-#include "epix.h"  // N.B. no semicolon
-using namespace ePiX;
-
-int main() {
-  picture(P(a1,b1), P(a2,b2), "n1 [unit1] x n2 unit2");
-  begin(); // end of preamble, start of body
-  end();   // end of body
-}
-\end{verbatim}
-\ePiX\ commands are of four general types: drawing, attribute setting,
-definitions (of data and functions), and operations on existing
-objects. Except as noted below, drawing and attribute commands must
-appear in the body, between \code{begin()}~and \code{end()}. Function
-definitions must come in the preamble, before \code{main()}. Data
-definitions may appear in the preamble or body.
-
-
-\subsubsection*{Output Format}
-\index{Output format}
-
-The \code{end()} command writes the output file to \code{stdout},
-using \code{eepic} macros by default. The shell scripts redirect
-\code{stdout} to an appropriate disk file.
-
-The attribute-setting command \code{pst\_format()} causes the output
-file to be written using \code{PSTricks} macros when \code{end} is
-called. Similarly, \code{tikz\_format()} causes the file to be written
-using \code{tikz} macros, and \code{eepic\_format()} causes the file
-to be written using \code{eepic} macros. These commands may appear
-anywhere in the figure body. There is no reason for a file to contain
-more than one such command.
-
-The output format may be selected on the command line, overriding any
-explicit request in the input file. Supplying \code{epix},
-\code{elaps}, or \code{flix} with one of the options \code{--pst},
-\code{--tikz}, or \code{--eepic} is tantamount to issuing a
-\code{pst\_format()} (etc.)\ command just before the end of the
-file. These options are listed in decreasing precedence. If more than
-one is given, the ``strongest'' applies, regardless of the command
-line order.
-
-A figure may be written directly to a specified disk file, in a format
-unaffected by the command line flags above. The command
-\begin{verbatim}
-  print_eepic("file.tex");
-\end{verbatim}
-writes the figure to the named file using \code{eepic}
-macros. Analogous commands exist for the formats \code{pst}~and
-\code{tikz}. These commands perform an immediate action. Consequently,
-the command's location in the input file is significant, and multiple
-commands may appear in a single file, so long as distinct file name
-arguments are provided. Applications include writing the same figure
-in multiple formats, or creating successive ``snapshots'' of a lengthy
-computation.
-
-
-\section{Picture Size and Aspect Ratio}
-
-\index{Picture!size}
-\index{Picture!offset}
-The \code{picture} command specifies a figure's logical and true
-sizes. In the ``minimal file'' snippet above, the \emph{canvas} is the
-Cartesian rectangle \teximath{[a_1,a_2]\times[b_1,b_2]} whose corners
-are given. Either pair of opposite corners is acceptable, but
-confusion is less likely when the SW~and NE corners are given, in this
-order.
-
-The true (printed) width and height are read from \code{picture}'s
-third argument, a ``size \code{string}'' such as \verb+"4cm x 1in"+,
-containing a number and optional \LaTeX\ length unit, an~\code{x},
-another number, and a mandatory length unit. Spaces may be used for
-legibility.  The mandatory length unit becomes the \LaTeX\
-\code{unitlength}.  The argument \verb+"4cm x 1in"+ creates a picture
-4~cm wide and 1~in high, but internally converts 4~cm to inches.  
-Recognized length units are \code{pt} (points, the default), \code{cm}
-(centimeters), \code{in} (inches), \code{mm} (millimeters), \code{pc}
-(picas), and \code{bp} (big points).  
-(\code{1in = 2.54cm = 72bp = 72.27pt}, \code{1pc = 12pt}.)
-
-The logical and true sizes may be defined separately with the commands
-\findex{bounding\_box}
-\findex{picture}
-\findex{unitlength}
-\begin{verbatim}
-  bounding_box(P(a1,b1), P(a2,b2));
-  picture(n1, n2);
-  unitlength(len); // len a length string, not a double
-\end{verbatim}
-One way or another, the logical and true dimensions \emph{must} have
-positive values when the \code{begin()} command is issued.
-
-\LaTeX\ treats the contents of a picture environment as a single box,
-aligned by default on its lower left corner. An \code{offset} command
-accepts two \code{double} arguments or a size \code{string} and shifts
-the page location accordingly. The command
-\code{offset("0.25 x -0.5cm")} shifts the picture right
-\teximath{0.25}~cm and down \teximath{0.5}~cm.  If the
-\code{unitlength} is 1~cm, the command \code{offset(0.25, -0.5)} has
-the same effect.
-
-A non-zero \code{offset} causes a picture's contents to appear in a
-location where \LaTeX\ does not expect them. This can be useful in a
-\LaTeX\ document, but should be avoided when compiling a stand-alone
-image, since \code{dvips} may crop according to rules of its own.
-
-
-\index{Picture!aspect ratio}
-\index{Picture!bounding box}
-The canvas's corners are \code{(xmin(),ymin())} and
-\code{(xmax(),ymax())}, while its width and height are
-\code{xsize()}~and \code{ysize()}. The canvas is a virtual, advisory
-data structure; its dimensions are not directly related to the
-figure's printed size, and picture elements may lie outside the
-canvas. Affine scaling maps the canvas to the page when the output
-file is written.
-\begin{center}
-\input{scaling.eepic}
-\end{center}
-\label{page:scaling}
-The figure's aspect ratio is controlled by sizing the canvas.  The
-aspect ratio is ``true'' if the canvas and page rectangles are
-geometrically similar, e.g., if both boxes are 1.5~times as wide as
-they are tall.
-
-
-\section{Color}
-\label{section:color}
-
-\index{Color|(} 
-\ePiX\ provides a \code{Color} data type. Four models are implemented:
-\code{RGB}, \code{CMY}, \code{CMYK}, and \code{Gray}.  A \code{Color}
-holds primary color ``channels'', each carrying an intensity between
-0~(no color) and~1 (full saturation).  ``No color'' means black in
-\code{RGB} and \code{Gray}, white in \code{CMY(K)}.  \code{RGB},
-\code{CMY}, and~\code{CMYK} colors are written to the output file as
-commands in the corresponding model. \code{Gray} shades are written
-in~\code{RGB}.
-
-Operations on red-green-blue colors are described below. Functionally,
-colors are converted to~\code{RGB}, operated upon, then converted back
-to the original model. Conversions are as described in Uwe Kern's
-\filename{xcolor} manual~\cite{xcolor}.
-
-
-\subsection{Constructors}
-
-Each color model has a ``constructor'' creating a color of specified
-densities. The \code{RGB}~and \code{CMY} models have named ``primary''
-constructors; the density argument is optional and defaults to~1.
-\findex{RGB}
-\findex{Red}
-\findex{Green}
-\findex{Blue}
-\findex{White}
-\findex{Black}
-\begin{verbatim}
-  // red-green-blue colors
-  RGB(double r=0, double g=0, double b=0);
-  Red(d=1);   Green(d=1);   Blue(d=1);
-  White(d=1);   Black(d=1);
-\end{verbatim}
-\findex{CMY}
-\findex{Cyan}
-\findex{Magenta}
-\findex{Yellow}
-\findex{CMY\_White}
-\findex{CMY\_Black}
-\findex{CMYK}
-\findex{Gray}
-\begin{verbatim}
-  // cyan-magenta-yellow colors
-  CMY(double c=0, double m=0, double y=0);
-  Cyan(d=1);   Magenta(d=1);   Yellow(d=1);
-  CMY_White(d=1);   CMY_Black(d=1);
-
-  // gray
-  Gray(double d=0); // equivalent to RGB(d, d, d)
-\end{verbatim}
-Each \code{CMY} constructor has a corresponding \code{CMYK} function,
-e.g.\ \code{CyanK()}~or \code{CMYK\_White()}.
-
-Though color densities lie between 0~and 1, \ePiX's primary color
-constructors take arguments mod~4, viewed as elements
-of~\teximath{[-2,2]}. Consider \code{Red(d)}, ``red with
-density~\teximath{d}''. For integer values of~\teximath{d}, the
-constructor has the following meanings: \code{Red(0)}~is black,
-\code{Red(1)}~is red, \code{Red(2)}=\code{Red(-2)}~is white, and
-\code{Red(-1)}~is anti-red, or cyan. For non-integer~\teximath{d}, the
-constructor interpolates between the bracketing integer values,
-Figure~\ref{fig:densities}. Other primary constructors work
-analogously.
-
-\begin{figure}[hbt]
-  \begin{center}
-    \input{color_density.eepic}
-  \end{center}
-  \caption{The red primary constructor.}
-\label{fig:densities}
-\end{figure}
-
-Let \teximath{\delta:[-2,2]\to[0,1]} be the piecewise-linear function
-that converts real numbers to primary color densities,
-\teximath{\clip:\mathbf{R}\to[0,1]} the clipping function.  The
-non-primary constructor \code{RGB(r, g, b)} computes the density of
-the red channel as
-\teximath{\clip\bigl(\delta(r)+\delta(-g)+\delta(-b)\bigr)}; the green
-and blue channel densities are computed similarly. Every color can be
-created with arguments between 0~and 1, but the constructor accepts
-arbitrary real arguments and returns colors varying ``continuously and
-periodically''.
-
-\index{Color!transparency} 
-Colors possess an ``alpha-channel'' for transparency. Except as
-supported by the output format, this feature is a stub.
-
-
-\subsection{Color Operations}
-
-Colors can be scaled, inverted, blended, superposed, and filtered. In
-the code below, \code{tint}~is a \code{Color}. The effect of each
-operation is described in the \code{rgb} model; the visual result is
-the same in all models.
-\findex{Color.invert}
-\findex{Color.blend}
-\findex{Color.superpose}
-\findex{Color.alpha}
-\findex{Color.filter}
-\begin{verbatim}
-  tint *= double c; // multiply channels by c, rebuild
-  tint.invert();    // (r, g, b) -> (1-r, 1-g, 1-b)
-  tint.blend(Color col, double t);  // (1-t)*tint + t*col
-  tint.superpose(col); // add channels, then clip to [0,1]
-  tint.alpha(double d); // set alpha channel to clip(d)
-
-  tint.filter(col); // return min density in each channel
-\end{verbatim}
-Except for \code{filter}, these operators modify their object. 
-\code{filter} simulates the effect of viewing \code{col}
-through a transparent sheet of \code{tint}, and returns a new
-\code{Color} object having the same model as \code{tint} without
-modifying \code{tint} itself.
-
-
-\section{Scene Attributes}
-
-Objects in a scene sit in 3-dimensional space. A \emph{camera}
-maps objects to the \emph{active screen}. The active \code{screen}
-may, in turn crop its contents. Each drawing command creates an
-object, ``photographs'' it, and adds the image to the active
-\code{screen}. This section describes the \code{Camera} and
-\code{screen} classes and a few associated concepts.
-
-
-\subsection{Angular Mode}
-\index{Angle units}
-
-By default, angles are measured in \code{radian}s. Two other angular
-modes are available: \code{degrees}~and \code{revolutions}. The
-angular mode is set with a named command, \code{radians()},
-\code{degrees()}, or \code{revolutions()}. The current angular mode
-affects all trigonometric functions and operations.
-
-
-\subsection{The Camera}
-\index{Camera|(emph}
-\index{Screen|(}
-
-Three-dimensional scenes are drawn on flat paper by applying a
-mathematical transformation. By default, \ePiX\ uses \emph{point
-projection}, the technique used by art students when they trace on a
-window with grease pencil, Figure~\ref{fig:camera}.
-
-\begin{figure}[hbt]
-  \begin{center}
-    \input{camera.eepic}
-  \end{center}
-  \vspace*{-0.25in}
-  \caption{Point projection.}
-  \label{fig:camera}
-\end{figure}
-
-\index{Camera!viewpoint}
-\index{Viewpoint}
-\ePiX\ depicts a Cartesian world by projecting mathematically to a
-screen plane, then affinely scaling to a printed page. The camera,
-which maps the world to the screen, consists of a \emph{body} (data
-that determines the position and orientation of the camera), a
-\emph{lens} (the actual mapping to the screen plane), and a
-\emph{filter} (a color through which the scene is viewed).
-
-
-\subsubsection*{Body}
-
-The camera's spatial orientation is described by a triple of mutually
-perpendicular unit vectors.  In memory of happy days at the beach,
-these vectors are called \emph{sea}, \emph{sky}, and~\emph{eye}. The
-screen plane is parallel to the sea-sky plane; the sea vector points
-horizontally to the right, sky points vertically upward. The eye is
-their cross product, which points directly at the viewer.
-
-The sea-sky-eye basis is located at the \emph{viewpoint}, the camera's
-spatial location. The \emph{target}, the origin of the screen plane,
-lies on the line through the viewpoint in the direction opposite the
-eye vector.  The distance from the viewpoint to the target is the
-\emph{range}.  The \emph{camera sphere} is centered at the viewpoint
-and passes through the target.  The orientation, viewpoint, target,
-and range completely (and redundantly) determine the camera's
-geometric situation in the world.
-
-
-\subsubsection*{The Lens}
-\index{Camera!lens}
-
-A \emph{lens} maps the world to the screen.  \ePiX\ comes with four
-lenses: \emph{shadow} (the default), \emph{orthogonal},
-\emph{fisheye}, and \emph{bubble}. Each lens simulates the appearance
-of world objects as seen by an observer at the viewpoint. The shadow
-lens is point projection from the viewpoint to the screen plane. The
-orthogonal lens projects from infinite distance.  Each of the other
-lenses performs radial projection to the camera sphere, then maps the
-sphere to the screen plane; the fisheye lens does orthogonal
-projection (so the entire image lies inside the disk centered at the
-target whose radius is the range) while the bubble lens does
-stereographic projection from the target's antipode.
-\index{Screen|)}
-
-
-\index{Camera!manipulation|(}
-An input file normally uses a single camera, so a global object named
-\code{camera} is defined automatically. At the start of a figure, the
-\code{camera} looks down on the \teximath{(x_1,x_2)}-plane from a
-distant point on the \teximath{x_3}-axis. The resulting view,
-essentially projection along the axis, is suitable for 2-dimensional
-figures.
-
-The \code{camera} is manipulated similarly to a real camera:
-\findex{Camera.at}
-\findex{Camera.look\_at}
-\findex{Camera.range}
-\findex{Camera.focus}
-\findex{Camera.tilt}
-\findex{Camera.pan}
-\findex{Camera.roll}
-\findex{Camera.clip\_range}
-\begin{verbatim}
-  camera.at(P posn);          // set viewpoint to posn
-  camera.look_at(P targ);     // set target to targ
-  camera.range(double dist);  // fix target, move viewpoint
-  camera.focus(double dist);  // fix viewpoint, move target
-  camera.tilt(double angle);  // rotate about the sea axis
-  camera.pan(double angle);   // rotate about the sky axis
-  camera.roll(double angle);  // rotate about the eye axis
-  camera.clip_range(dist);    // cull scenery closer than dist
-\end{verbatim}
-Explicitly setting the viewpoint or target makes the sky vector
-parallel to the projection of the \teximath{x_3}~axis when possible;
-otherwise the \teximath{x_2}-axis is used. Setting the range or focus
-moves the \code{camera} parallel along the eye line. Each command
-re-sizes the image; note that increasing the focus \emph{enlarges} the
-image. The three rotation operations fix the viewpoint, but only roll
-fixes the target.
-
-
-\subsubsection*{Filtering and Color Separation}
-\index{Color!separation}
-\index{Camera!color separation}
-
-The \code{camera} has a \emph{filter} through which all scene
-\code{Color}s pass. For uniformity, the filter should only be set at
-the start of the file body, before any visible elements have been
-placed in the scene.  The filter has two primary uses---model
-conversion and color separation---but can also be used for special
-effects.
-
-There is a \code{Neutral} color, for which filtering has no effect at
-all. The \code{camera}'s default filter is \code{Neutral}. In
-addition, each color model has a \emph{neutral} representative,
-\code{RGB\_Neutral}, etc. Passing \code{Color}s through a neutral
-filter preserves their appearance but converts them to the neutral
-\code{Color}'s model.
-
-Filtering can be used to ``split'' a \code{Color} into primary
-constituents. For \code{RGB} channels, the primaries themselves are
-suitable filters. For \code{CMYK} channels, there are special
-\emph{process} filters, named \verb+C_Process+, etc.
-\begin{verbatim}
-  camera.filter(CMY_Neutral());  // convert all colors to CMY
-  camera.filter(Gray_Neutral()); // black and white photography
-  camera.filter(Green());        // the green channel
-  camera.filter(M_Process());    // the magenta channel
-  camera.filter(Red(1.4));       // la vie en rose?
-\end{verbatim}
-\index{Camera!manipulation of|)}
-\index{Camera|)}
-
-
-\subsection{Clipping}
-
-\index{Clipping|(}
-
-Two operations handle elements lying far from the target.
-\emph{Cropping} culls elements based on their screen location, and is
-described later. \emph{Clipping} removes objects whose spatial
-location lies outside the ``clip region''.
-
-Initially, the clip region is a very large box centered at the
-origin. Commands are provided to resize this box, keeping the faces
-parallel to coordinate planes.
-\findex{clip\_box}
-\findex{clip\_to}
-\begin{verbatim}
-  clip_box(P pt1, P pt2); // opposite corners
-  clip_box(P pt);         // opposite corners pt and -pt
-  clip_to (P pt);         //                  pt and P(0,0,0)
-  clip_box();             // very large box
-\end{verbatim}
-Additional ``clippers'' may be added manually. Individual clipping
-planes are specified by a point and inward-pointing normal vector.
-Parallel planes cutting a ``slice'' or ``slab'' are described by a
-location, direction, and a distance. The location lies halfway between
-the clipping planes, and the planes' normals point toward the location.
-\findex{clip\_face}
-\findex{clip\_slice}
-\findex{clip\_restore}
-\begin{verbatim}
-  clip_face(P loc, P perp); // perp points inward
-  clip_slice(loc, perp);    // very close parallel planes
-  clip_slice(loc, perp, dist); // planes separated by dist
-  clip_restore();  // remove manually-added clip planes
-\end{verbatim}
-Like \code{clip\_restore}, the \code{clip\_box} and \code{clip\_to}
-commands remove all user-specified half spaces. 
-\index{Clipping|)}
-
-
-\subsection{Screens and Page Layout}
-\index{Screen|(}
-\index{Screen!active}
-\index{Layout}
-
-By default, drawing occurs in the Cartesian coordinate system of the
-\code{canvas}. However, insets and subfigures are most naturally
-composed in ``local'' coordinates, then placed into their final
-location as a unit, a process called \emph{layout}. \ePiX\ implements
-layout with the \code{screen} class.
-
-
-\subsubsection*{Screens}
-\index{Bounding box}
-
-A \code{screen} is a Cartesian plane containing a distinguished
-coordinate rectangle, its \emph{bounding box}. The \code{canvas} of a
-figure is a \code{screen}, as is the internal representation of the
-printed page.  At any point of a file body, some \code{screen} is
-\emph{active}, or ``open for drawing''. A new \code{screen} is created
-from a pair of opposite corners, but is not used until explicitly
-activated. 
-\findex{activate}
-\findex{deactivate}
-\begin{verbatim}
-  screen subfig(P(a1,b1), P(a2,b2)); // [a1, a2] x [b1, b2]
-  activate(subfig);   // open subfig for drawing
-  // commands to draw in subfig
-  deactivate(subfig); // re-activate the previous screen
-\end{verbatim}
-
-The \code{canvas} is automatically drawn at the \code{end} of the
-input file. The contents of other \code{screen}s must be incorporated
-into the \code{canvas} explicitly with an \code{import}~or
-\code{inset} command. \code{import} affinely scales the bounding box
-of the ``child'' \code{screen} to the \code{canvas}. \code{inset}
-specifies corners in the ``parent'' where the child is
-placed.
-\findex{import}
-\findex{inset}
-\begin{verbatim}
-  import();           // active screen to canvas
-  import(subfig);     // subfig to canvas
-  inset(P sw, P ne);  // active screen to specified rectangle
-  inset(subfig, sw, ne); // subfig to specified rectangle
-  inset(subfig);      // inset to subfig's corners
-\end{verbatim}
-
-
-\subsubsection*{Extracting}
-
-The portion of a \code{screen} enclosed by a specified rectangle can
-be \emph{extracted}. Each of the commands
-\findex{extract}
-\findex{canvas}
-\begin{verbatim}
-  subfig.extract(P sw, P ne);
-  canvas().extract(P sw, P ne);
-\end{verbatim}
-returns the \code{screen} having stated corners and containing part of
-\code{subfig} or the \code{canvas}, respectively. Elliptical and
-diamond-shaped portions of a \code{screen} may be extracted.  The
-contents occupy the ellipse or diamond inscribed in the given
-rectangle.
-\findex{extract\_diamond}
-\findex{extract\_ellipse}
-\begin{verbatim}
-  subfig.extract_ellipse(sw, ne);
-  canvas().extract_diamond(sw, ne);
-\end{verbatim}
-The \code{screen} returned by \code{extract} (or its variants) may be
-used just like a manually-constructed \code{screen}, for example to
-construct a magnified inset. 
-
-
-\subsubsection*{True-Size Drawing}
-\label{truesize}
-
-On occasion, it is necessary to draw at known page size, independently
-of the unit length. For 2-dimensional drawing in the
-\teximath{(x_1,x_2)}-plane with the \code{camera} in its default
-location, the coordinates (horizontal, vertical, or both) of a
-\code{screen} may be interpreted as true~pt offsets relative to a
-specified point rather than as Cartesian coordinates.
-\findex{inlay}
-\findex{inlay\_horizontal}
-\findex{inlay\_vertical}
-\begin{verbatim}
-  inlay(subfig, P loc);
-  inlay_horizontal(subfig, loc);
-  inlay_vertical(subfig, loc);
-\end{verbatim}
-Each command maps the origin of \code{subfig} to the specified
-location in the active \code{screen}. The first performs affine
-scaling so that one Cartesian unit in \code{subfig} maps to one
-true~pt on the page.  The second and third commands perform this
-scaling only in the named direction.
-
-\findex{pt\_to\_screen}
-The \code{inlay} functions are suitable only for 2-dimensional
-effects. For 3-dimensional true-size drawing, the function
-\code{pt\_to\_screen} converts a true length of 1~pt into Cartesian
-coordinates in the active \code{screen}. For example, the command
-\code{line(P(0,0), P(pt\_to\_screen(12),0))} draws a line segment
-12~pt long with its left endpoint at the Cartesian origin. True size
-drawing is unusual in an input file, but has definite uses in library
-code; \ePiX's right angle marker is a typical application.
-
-Either type of true-size drawing works as described when drawing in
-the \code{canvas}, and \emph{only} when drawing in a \code{screen}
-imported to the \code{canvas} at ``true Cartesian'' size (one
-\code{screen} unit maps to one Cartesian unit in the \code{canvas}).
-In other situations, the true size coordinate(s) will be scaled by
-additional affine transformation(s).
-
-
-\subsubsection*{Cropping and Decorations}
-
-\index{Cropping}
-A \code{screen} has a \emph{crop mask}: rectangular (default),
-elliptical, or diamond-shaped. If cropping is switched on in the
-active \code{screen}, added elements are cropped to the crop mask.
-For example, cropping by the default crop mask in the \code{canvas}
-ensures the figure lies inside the printed region allocated by
-\LaTeX.
-
-The \code{crop} commands below affect the active \code{screen}
-only. Cropping is not a ``global'' attribute, but must be set or unset
-explicitly for each \code{screen}. By default, cropping is switched
-off.
-\findex{crop}
-\findex{crop\_ellipse}
-\findex{crop\_diamond}
-\findex{set\_crop}
-\begin{verbatim}
-  set_crop();      // activate cropping
-  set_crop(false); // deactivate cropping
-  crop_diamond();  // <>-shaped mask, set crop state
-  crop_ellipse();  // etc...
-  crop();          // crop active screen's contents
-\end{verbatim}
-Normally the crop mask is inscribed in the \code{screen}'s bounding
-box. The commands \code{crop\_diamond} and \code{crop\_ellipse} also
-accept a pair of \code{P}~arguments, which are treated as corners of
-the crop box. 
-
-The active \code{screen} may be decorated with a \code{border}
-(outline of specified color and line width) and \code{backing} (solid
-fill color). The crop mask determines the shape of the \code{border}
-and \code{backing}.
-\findex{border}
-\findex{backing}
-\begin{verbatim}
-  border(color, len);
-  backing(color);
-\end{verbatim}
-Identically-named member functions can be applied to an arbitrary
-\code{screen} whether or not it is active:
-\begin{verbatim}
-  scr.crop_rectangle().backing(Blue(1.8));
-  canvas().crop();
-\end{verbatim}
-
-
-\subsubsection*{Affine Maps}
-\index{Affine map}
-
-A \emph{plane affine map} has the form \teximath{T(x) = Ax+b} for some
-invertible \teximath{2\times2} matrix~\teximath{A} and a constant
-vector~\teximath{b}. \ePiX's \code{affine} class allows affine maps to
-be built and applied to \code{screen}s' contents.
-
-An affine map is uniquely determined by the images of three
-non-collinear points.  The constructor returns the affine map sending
-the points \teximath{(1,0)}, \teximath{(0,1)}, and~\teximath{(0,0)} to
-\code{pt1}, \code{pt2}, and~\code{pt0}, respectively.
-\findex{affine}
-\begin{verbatim}
-  affine af(P pt1, P pt2, P pt0=P(0,0));
-\end{verbatim}
-To emphasize, the arguments are locations, not displacements, and the
-image of the origin comes last.  There is also a \code{void}
-constructor (taking no arguments) which returns the identity map.
-
-To facilitate construction of affine maps, an existing \code{affine}
-may be post-composed with a variety of ``elementary'' affine
-transformations. In the commands below, \code{th} is an angle (in
-current units), \code{sc} is a non-zero \code{double}, and \code{ctr}
-is a point fixed by the composing transformation. In each command,
-\code{ctr} defaults to \teximath{(0,0)}.
-\findex{shift}
-\findex{rotate}
-\findex{reflect}
-\findex{h\_scale}
-\findex{v\_scale}
-\findex{scale}
-\findex{h\_shear}
-\findex{v\_shear}
-\findex{postcomp}
-\begin{verbatim}
-  affine af; // the identity map
-  af.shift(P arg);    // translate by arg
-  af.rotate(th, [ctr]);  // counterclockwise rotation about ctr
-  af.reflect(th, [ctr]); // reflect across line through ctr
-
-  af.h_scale(sc, [ctr]); // horizontal scaling
-  af.v_scale(sc, [ctr]); // vertical scaling
-  af.scale(sc, [ctr]);   // dilatation
-
-  af.h_shear(sc, [ctr]); // shear preserving horizontals
-  af.v_shear(sc, [ctr]); // shear preserving verticals
-
-  af.invert();           // the inverse
-  af.postcomp(affine f); // post-compose with f
-  af(f);                 // pre-compose, af not modified
-\end{verbatim}
-A non-invertible \code{affine} can be created \emph{only} by shearing
-or scaling with an extremely large or extremely small argument, or by
-supplying three collinear points to the constructor.  Calling
-\code{invert} on a non-invertible map merely issues a warning and
-performs no action.
-
-An \code{affine} may be applied to a \code{screen}'s current contents.
-The \code{screen} class has eight member functions (\code{shift}
-through \code{shear}) with syntax identical to the affine map
-functions. In addition, an arbitrary \code{affine} may be applied to a
-\code{screen}:
-\findex{apply}
-\begin{verbatim}
-  scr.shift(arg); // shift scr's contents by arg; etc.
-  scr.apply(f);   // apply f to scr's contents
-\end{verbatim}
-To apply a composition of several maps to a \code{screen}, it's best
-to build an \code{affine} map by composition, then \code{apply} the
-map. Composing \code{affine}s is cheap; \code{apply}ing an
-\code{affine} is costly in proportion to the number of elements in the
-\code{screen}.
-
-Applying an \code{affine} to a \code{screen} has no effect on the
-bounding box, \code{border}, or \code{backing}, and may move elements
-outside the bounding box even if cropping is active. To ensure a
-\code{screen}'s contents lie inside the bounding box, \code{crop} the
-\code{screen} \emph{after} \code{apply}ing the \code{affine}(s).
-
-The sample file \filename{inverse.xp} uses \code{affine} maps to
-depict branches of inverse functions in one variable,
-\filename{symmetry.xp} depicts the permutation group~\teximath{S_3}
-by its action on a regular hexagon.
-\index{Screen|)}
-
-
-\section{Drawing Attributes}
-
-\ePiX\ maintains drawing states for filled regions, paths, and text
-objects.
-
-
-\subsection{Filled Regions}
-
-\index{Filling}
-\index{Path|(}
-\index{Path!filled}
-Filling is either on or off. When filling is active, closed paths are
-filled with the current \emph{fill color}.
-\findex{fill}
-\findex{nofill}
-\begin{verbatim}
-  fill();   // turn filling on
-  fill(color); // turn filling on, specify color
-  nofill(); // turn filling off, same as fill(false);
-\end{verbatim}
-
-
-\subsection{Paths}
-
-Paths and borders of filled regions are drawn with two \emph{pen}s,
-each described by color and line width. The \emph{line pen} draws
-all path-like objects. The \emph{base pen} does nothing unless it is
-wider then the line pen, in which case it draws an ``underlayer'' or
-``border'' on the line pen.
-\findex{pen}
-\begin{verbatim}
-  pen(len);          // set line pen width
-  pen(color);        // set line color, keep width
-  pen(color, len);   // set color and width
-\end{verbatim}
-As usual, \code{len} may be either a length string or a \code{double},
-interpreted as a width in~\code{pt}.  There are \code{base} functions
-with the same signatures and analogous meanings for the base pen.
-
-The line width can be set with named declarations; the optional
-argument sets the line color:
-\findex{plain}
-\findex{bold}
-\findex{bbold}
-\begin{verbatim}
-  plain([color]); // 0.4pt
-  bold([color]);  // 0.8pt
-  bbold([color]); // 1.6pt
-\end{verbatim}
-
-
-\subsubsection*{Path Style}
-
-\index{Path!style}
-By default, path-like objects are drawn with solid lines. Dashed,
-dotted, and free-form path style patterns are also available. (The
-\code{base} underlayer is always solid.) The page length of a pattern
-defaults to 12~pt, but can be set.
-\findex{line\_style}
-\findex{dash\_size}
-\begin{verbatim}
-  line_style(string);
-  dash_size(len=12); 
-\end{verbatim}
-The path style is set with a WYSIWYG string of dashes, spaces, and
-periods, representing a pattern of dashes, gaps, and dots. In the
-sample styles below, the repeating units have the same page size,
-12~pt. 
-\begin{center}
-  \input{pathstyle.eepic}
-\end{center}
-For brevity and uniformity, named commands are provided.
-\findex{solid}
-\findex{dashed}
-\findex{dotted}
-\begin{verbatim}
-  solid(); "-"     dashed(); "-  -"    dotted(); " . "
-\end{verbatim}
-A sequence of \teximath{n}~dashes, spaces, and dots corresponds to a
-dash/dot pattern in an interval divided into \teximath{n}~subintervals
-of equal length. If the \teximath{i}th character is a dash or space,
-the \teximath{i}th~subinterval is drawn solid or empty,
-respectively. If the \teximath{i}th~character is a period, a dot is
-placed at the midpoint of the \teximath{i}th~subinterval.
-
-This pattern is applied to a path-like object as follows. The page
-length of each edge is divided by the current \code{dash\_size} and
-the ceiling (next largest integer) taken. This many copies of the
-current path style are scaled onto the edge. The first and last
-characters are adjacent in repeated units.
-
-There are three inequivalent ways to adjust the dash length/dot
-spacing in a non-line path: Change the \code{dash\_length}, create a
-path with a different number of points, or use a longer, repetitive
-pattern.  For best results, the style string should not be longer than
-about a dozen characters.
-
-If you need several dashed/dotted line styles in multiple figures,
-it's best to define a custom header instead of hard-coding line
-styles. See Section~\ref{section:extensions} for guidance.
-\index{Path|)}
-
-
-\subsection{Text Objects}
-
-\index{Labels|(emph}
-\index{Labels!alignment}
-
-Two types of textual element may appear in a file: \emph{labels} (text
-boxes) and \emph{markers} (\LaTeX\ symbols). A marker occupies a box
-of zero size, and is placed at a specified Cartesian location. A label
-has typographical size, and is usually offset from its Cartesian
-location. For placement, an \emph{alignment point} is attached to each
-label, and Cartesian coordinates position the alignment point.
-
-\subsubsection*{Labels}
-
-A label is printed as a \LaTeX\ box.  By default, the alignment point
-is its reference point, the intersection of the left edge and the
-baseline, which is used by \LaTeX\ to position the box on the
-page:\input{basepoint.eepic}
-
-\index{Labels!alignment|(}
-The alignment point may be \emph{offset} manually by a specified
-number of \code{pt}. Additionally, a label's location with respect to
-the alignment point can be chosen with an optional \LaTeX-style
-alignment option. This scheme allows labels to be placed easily where
-they will not overlap other parts of the figure, and ensures labels
-stay properly positioned when the size or aspect ratio of a figure
-changes.
-\findex{label}
-\begin{verbatim}
-  label(P posn, P offset, string msg, [align]);
-  label(posn, msg);
-\end{verbatim}
-The first two components of the \code{offset} argument are numbers
-of~\code{pt} to shift the alignment point right and up.  The optional
-\code{align} argument may be one---or an appropriate pair---of
-\code{t}, \code{b}, \code{r}, or~\code{l} (top, bottom, right, left),
-or~\code{c} (center). These alignment options specify the position of
-the label \emph{relative to the Cartesian location}~\code{posn},
-namely they work \emph{opposite} to the way they work in \LaTeX.
-\begin{center}
-  \input{alignment_lr.eepic}\qquad
-  \input{alignment.eepic}
-\end{center}
-\index{Labels!alignment|)}
-
-The \code{msg} argument is usually a snippet of \LaTeX\ code enclosed
-in double quotes. \CXX~treats ``\verb+\+'' as an escape character, so
-a double backslash is needed in the source to get a single backslash
-in the output. For example,
-\begin{verbatim}
-  label(P(0,0), P(2,-1), "$\\rho = \\sin\\theta$", br);
-\end{verbatim}
-positions an alignment point \code{2pt}~right and \code{1pt}~below the
-(Cartesian) origin, and typesets the equation
-\teximath{\rho=\sin\theta} below and to the right.
-
-\index{Labels!rotated}
-\index{Angle units}
-Labels can be rotated; the (counterclockwise) angle is set in current
-angle units with the command \code{label\_angle(theta)}. For example,
-a rotation angle of~90 degrees prints labels along a vertical
-axis. Though label rotation has legitimate uses, it can make labels
-more difficult to read, defeating their purpose. Do not use rotated
-labels merely because they are available. As a practical matter, if an
-output file contains rotated labels, the enclosing document must use
-the \code{rotating} package. \code{elaps} automatically loads this
-package.
-
-\index{Affine map!action on labels}
-An \code{affine} behaves moderately intelligently when acting on a
-marker or label. The mapping is applied to the label's location, and
-the ``linear part'' is used to adjust the offset and label angle. No
-attempt is made to treat alignment. For best results, if a
-\code{screen} will have an \code{affine} applied to it, label
-positions should be fine-tuned only with offsets, not alignment
-arguments.  In all situations, the font itself is unchanged; no
-attempt is made to print sheared, scaled, or reflected text. The
-sample file \filename{inverse.xp} illustrates the effect of affine
-maps on labels.
-
-
-\subsubsection*{Fonts and Type Size}
-
-\index{Fonts}
-\index{Labels!fonts in}
-By default, the font in an \ePiX\ figure is that of the enclosing
-document. The font size and face are changed with
-``declaration-style'' commands such as
-\findex{font\_size}
-\findex{font\_face}
-\begin{verbatim}
-font_size("Large");
-font_face("sc");
-\end{verbatim}
-The argument of \verb+font_size+ is a valid \LaTeX\ size. If no
-argument is given, \code{normalsize} is understood. \verb+font_face+
-accepts a two-letter string, appended to the string ``\code{text}'' to
-give a \LaTeX\ font declaration command (``\code{textsc}'' above).
-Finer-grained control is accomplished by placing \LaTeX\ commands
-into the label text.
-
-
-\subsubsection*{Label Attributes and Masked Labels}
-
-Each label command has a corresponding ``mask'' version
-(\code{masklabel}) that draws an opaque rectangle under the label
-text. The mask size exceeds the label's size by an amount of
-\emph{padding}, and the mask is itself surrounded by a rectangular
-\emph{border}, of specified color and width.
-\findex{label\_color}
-\findex{label\_mask}
-\findex{label\_pad}
-\findex{label\_border}
-\findex{no\_label\_border}
-\begin{verbatim}
-  label_color(color);         // set label text color
-  label_mask(color=White());  // set mask color
-  label_pad(string len);
-
-  label_border(color, [len]); // set color (and line width)
-  label_border(len);          // set line width only
-  no_label_border();          // turn off label borders
-\end{verbatim}
-
-
-\subsubsection*{Markers}
-
-\index{Marker types|(}
-\ePiX's marker types, listed in Table~\ref{table:marker}, are obtained
-with the command \verb+marker(P pt, <MARKER TYPE>);+ Several
-``dot-like'' marker types are available by name: \input{dots.eepic}
-\findex{spot}
-\findex{dot}
-\findex{ddot}
-\findex{box}
-\findex{bbox}
-\findex{ring}
-\findex{circ}
-\begin{verbatim}
-  spot(P pt);  dot(P pt);   ddot(P pt);
-     ---       box(P pt);   bbox(P pt);  
-  ring(P pt);  circ(P pt);     ---
-\end{verbatim}
-A \code{circ} is filled with the current \code{mask\_color}, and a
-\code{ring} is ``hollow''.  Each dot-like marker can also be called
-with label syntax, generating a labeled marker with one command.
-\begin{verbatim}
-  dot(P posn, offset=P(0,0), msg="", align=none); // etc.
-\end{verbatim}
-
-\findex{dot\_size}
-By default, \code{spot}~and \code{ring} are 4~pt in diameter;
-\code{dot}, \code{box}, and~\code{circ} are 3~pt in diameter;
-\code{ddot}~and \code{bbox} are 2~pt in diameter. At arbitrary
-diameter, a \code{spot} is \teximath{4/3}~the diameter of a~\code{dot}
-and a~\code{ddot} is \teximath{2/3}~the diameter.  The command
-\code{dot\_size(diam=3)} sets the diameter of a \code{dot}, and hence
-the size of all dot-like markers.
-
-\begin{table}[tb]
-  \begin{center}
-    \input{marker.eepic}
-  \end{center}
-  \caption{\ePiX's \code{marker} types.}
-  \label{table:marker}
-\end{table}
-\index{Marker types|)}
-
-
-
-\subsubsection*{Reminders}
-
-When constructing and placing a label,
-\begin{itemize}
-\item Offsets are specified in \code{pt} (true length), not Cartesian
-  units: A label's location relative to its alignment point should not
-  depend on the logical or printed size of the figure.
-
-\item The label text is enclosed in double quotes (the single
-  character~\code{"}), and contains the \LaTeX\ code to generate the
-  label. Backslashes are doubled.
-  \index{Labels!backslash in}
-  \index{Labels!in double quotes}
-\end{itemize}
-\index{Labels|)}
-
-
-\subsection{Color Declarations}
-
-Old-style color declarations set the fill color, line color, and
-text color.
-\findex{rgb}
-\findex{cmyk}
-\begin{verbatim}
-  rgb(r, g, b);      cmyk(c, m, y, k);
-  rgb(P);            cmyk(P);  // for function-controlled colors
-  red(d);  // similarly for other primaries
-\end{verbatim}
-\index{Color|)}
-
-
-\section{Creating and Drawing Objects}
-
-Scene elements include geometric objects, coordinate grids, axis
-labels, and function plots. A few commands create an object (a point,
-line segment, circle, sphere, or plane) that can be used in subsequent
-computations, but most drawing commands automatically create, draw,
-and discard objects.
-
-
-\subsection{Geometric Data Structures}
-
-\index{Point|(}
-The simplest object in the world, and by far the most common named
-data structure, is~\code{P}, an ordered triple of real numbers
-(double-precision floats). The function~\code{P(x1,x2,x3)} creates the
-point~\teximath{(x_1,x_2,x_3)}. If only two arguments are provided,
-\teximath{x_3=0} by default. This convention allows \ePiX\ to treat
-2-~and 3-dimensional figures uniformly. The standard basis is
-available: \code{E\_1=P(1,0,0)}, etc. 
-
-Depending on context, a \code{P} may represent either a
-\emph{location} (point) or a \emph{displacement} (vector). Almost all
-\ePiX\ functions treat a~\code{P} as a point. However, algebraic
-operators and commands that plot vector fields treat \code{P}
-arguments as displacements.
-
-Polar, cylindrical, and spherical coordinate \code{P}~constructors are
-sensitive to the current angular mode. 
-\index{Angular mode}
-\findex{P}
-\findex{polar}
-\findex{cis}
-\findex{cyl}
-\findex{sph}
-\begin{verbatim}
-  P pt=polar(r,t);   // (r*Cos(t), r*Sin(t), 0)
-  P pt=cis(t);       // (Cos(t), Sin(t), 0) = polar(1, t)
-  P pt=cyl(r,t,z);   // (r*Cos(t), r*Sin(t), z)
-  P pt=sph(r,t,phi); // polar(r,t)*Cos(phi) + (0,0,r*Sin(phi))
-\end{verbatim}
-
-Algebraic operations---addition/subtraction, scalar multiplication;
-scalar, cross, and componentwise products; orthogonalization---can
-be performed on~\code{P}s.  In compound expressions, the binary
-operators below should be enclosed in parentheses, and scalars must be
-collected at left, \code{P}s at right.
-\findex{P.x1}
-\findex{P.x2}
-\findex{P.x3}
-\findex{J}
-\begin{verbatim}
-  double u=pt.x1();   // first coordinate of pt, etc.
-  P(a,b,c)|P(x,y,z);  // scalar product, ax+by+cz
-  P(a,b,c)&P(x,y,z);  // componentwise product (ax, by, cz)
-  P(a,b,c)*P(x,y,z);  // cross product (bz-cy, cx-az, ay-bx)
-  J(p);               // quarter turn about the x3-axis
-  p%q;                // orthogonalization, p (mod q)
-\end{verbatim}
-Explicitly, \code{p\%q}~is the unique vector \code{p+k*q}
-perpendicular to~\code{q}.
-
-\code{P}~operations express mathematical relationships, and therefore
-imbue a figure with logical structure, making the input file easier to
-read, modify, and maintain. Commonly, a file preamble will define a
-few named points with hard-coded coordinates, then define additional
-points of interest using \code{P}~operators.
-\index{Point|)}
-
-
-\subsubsection*{Other Geometric Classes}
-
-In addition to~\code{P}, objects of type \code{Circle}, \code{Plane},
-\code{Segment}, and \code{Sphere} can be used for Euclidean geometry
-constructions. Simple affine operations are supplied for each type, as
-is a \code{draw()} function, which represents the object as a path in
-the screen.
-\findex{shift}
-\findex{move\_to}
-\findex{scale}
-\findex{draw}
-\begin{verbatim}
-  obj.shift(P arg);    // translate by arg
-  obj.move_to(P arg);  // move center to arg
-  obj.scale(double c); // scale about center by c
-  obj.draw();
-\end{verbatim}
-A \code{Segment}'s ``center'' is its midpoint. A \code{Plane} has no
-center; \code{move\_to} translates the \code{Plane} to pass through
-\code{arg}, and \code{scale} has no effect.
-
-\index{Circle}
-A \code{Circle} data structure consists of a center, radius, and a
-perpendicular unit vector. Three constructors are provided:
-\findex{Circle}
-\begin{verbatim}
-  Circle(center=P(0,0,0), double rad=1, normal=E_3);
-  Circle(P center, P point);
-  Circle(P p1, P p2, P p3);
-\end{verbatim}
-The second constructor creates the \code{Circle} parallel to the
-\teximath{(x_1,x_2)}~plane, with given center, and radius equal to the distance
-between the arguments. (A warning is printed if the second argument
-does not lie on the circle, namely, if the arguments do not lie in a
-plane parallel to the \teximath{(x_1,x_2)}~plane.) The third returns the
-\code{Circle} passing through the given points; the points must not be
-collinear.
-
-The data defining a \code{Circle} are recovered with member functions
-named \code{center()}, \code{radius()}, and \code{perp()}.
-
-\index{Plane}
-\findex{Plane}
-A \code{Plane} is specified by a point and normal vector, or by three
-non-collinear points. The \code{draw()} function clips the plane and
-draws the resulting polygon. Unless the clip box has been set
-manually, the clipped polygon's vertices will have large coordinates.
-
-\index{Segment}
-\findex{Segment}
-A \code{Segment} is constructed from its endpoints. The member
-function \code{midpoint()} returns the center.
-
-\index{Sphere}
-\findex{Sphere}
-A \code{Sphere} is specified by a point and a radius---by default the
-origin and unity, or by the center and a point on the sphere. Member
-functions \code{center()}~and \code{radius()} return the defining
-data.  Capabilities specific to geography and spherical geometry are
-described below, pp.~\pageref{non-eucl}ff.
-
-The \code{draw()} function of a \code{Sphere} draws the horizon
-visible from the current viewpoint. While this horizon is a circle in
-object space, its image in the screen is generally an ellipse.
-Antipodal points are not generally mapped to points symmetrically
-placed with respect to the center of this ellipse. These effects are
-most pronounced when the viewpoint is close to the \code{Sphere} and
-the center is not close to the \code{target}.
-
-
-\subsubsection*{Intersection}
-
-\index{Intersection}
-
-To facilitate geometric computation, \ePiX's \code{Circle},
-\code{Plane}, \code{Segment}, and \code{Sphere} classes can be
-intersected with the \code{*}~operator.
-\texicomment
-Table~\ref{table:intersect}
-lists the return types for each pair of arguments.  Intersection is
-commutative, so only the top half of the table is shown. For purposes
-of intersection, a \code{Segment} is extended into a line.
-The sample file \filename{pascal.xp} gives typical applications of
-objects and intersection.
-\findex{intersection}
-\begin{table}[hbt]
-\begin{center}
-  \begin{tabular}{c|cccc}
-    \code{*} & 
-    \code{Segment} & \code{Circle} & \code{Plane} & \code{Sphere} \\
-    \hline
-    \code{Segment} & \code{P} & \code{Segment} & \code{P} & \code{Segment} \\
-    \code{Circle}  &    & \code{Segment} & \code{Segment} & \code{Segment} \\
-    \code{Plane}   &    &    &   \code{Segment} & \code{Circle} \\
-    \code{Sphere}  &    &    &    & \code{Circle}
-  \end{tabular}
-  \caption{Object intersection types.}
-  \label{table:intersect}
-\end{center}
-\end{table}
-\texicommentend
-
-A \code{Circle} has a center, radius, and unit normal; a \code{Plane}
-has a distinguished point and unit normal; a \code{Segment} has two
-endpoints; a \code{Sphere} has a center and radius. An object is
-\emph{malformed} if these conditions are not met.  The constructors
-return well-formed objects with two exceptions: \code{Circle} and
-\code{Plane} create malformed objects if called with three collinear
-points.  The operator~\code{*} returns a malformed object if either
-argument is malformed, or if the operands are disjoint, tangent, or
-coincident.  Malformedness is benign: Calling \code{draw()} on a
-malformed object does nothing.
-
-
-\subsubsection*{Orthonormal Frames}
-
-A \code{frame} comprises three mutually perpendicular unit
-vectors. The constructor takes three vectors. The \code{frame}'s third
-vector~\teximath{e_3} is positively proportional to~\code{v3}, the
-second vector~\teximath{e_2} is positively proportional to
-\code{v2\%v3}, and the first is the cross product,
-\teximath{e_1=e_2\times e_3}. Thus, a \code{frame} is right-handed,
-and does not depend on~\code{v1}. 
-
-The elements of a \code{frame} are named \code{sea}, \code{sky}, and
-\code{eye}, just as for the \code{camera}. A \code{frame} can be
-rotated through an arbitrary angle about any of its elements.
-\findex{frame}
-\begin{verbatim}
-  frame();        // the standard basis {E_1, E_2, E_3}
-  frame fr(v1, v2, v3); // orthonormalize {v1, v2, v3}
-  fr.sea();       // the first element of fr, etc.
-  fr.rot1(theta); // rotate fr through theta about sea, etc.
-\end{verbatim}
-
-
-\subsection{Path-Like Elements}
-
-Basic path-like objects are drawn with named commands. Arguments of
-polygon commands are endpoints/vertices. Except for \code{line}~and
-\code{Line}, the following are subject to filling.
-\findex{line}
-\findex{Line}
-\findex{triangle}
-\findex{rect}
-\findex{quad}
-\findex{circle}
-\begin{verbatim}
-  line(P p1, P p2, [double expand]);
-  Line(p1, p2);  // draw line through p1, p2 (crop required)
-  triangle(P p1, P p2, P p3);
-  rect(P p1, P p2);
-  quad(P p1, P p2, P p3, P p4); // quadrilateral
-  circle(ctr=P(0,0,0), rad=1, normal=E_3);
-  circle(ctr, pt);
-  circle(pt1, pt2, pt3);
-\end{verbatim}
-The optional \code{line} argument is an expansion parameter:
-\code{line(p1,p2,t);} draws a segment centered at the midpoint of
-\code{p1}~and \code{p2}, with length scaled
-by~\teximath{2^{t/100}}. (Setting \teximath{t=100} doubles the length,
-while \teximath{t=-100} halves the length.) The arguments of
-\code{rect()} must lie in a plane parallel to a coordinate plane. The
-arguments to \code{circle} commands are the same as for \code{Circle}
-constructors.
-
-Quadratic and cubic splines are described by their control points.  A
-list of~\code{P} is drawn as a ``natural'' spline (the \teximath{C^2}
-piecewise cubic curve with vanishing second derivatives at the
-endpoints); the number of points per cubic segment must be specified.
-Circular and elliptical arcs are given by center, a basis, angular
-range, and an optional number of intervals.
-\findex{spline}
-\findex{arc}
-\findex{ellipse}
-\begin{verbatim}
-  spline(P p1, P p2, P p3, [int n]);       // quadratic
-  spline(P p1, P p2, P p3, P p4, [int n]); // cubic
-  spline(vector<P>, int n);                // natural spline
-
-  arc(P ctr, rad, t_min, t_max);  // parallel to (x1,x2)-plane
-  ellipse(P ctr, P v1, P v2);     // in plane spanned by v1, v2
-  ellipse(P ctr, P v1, P v2, t_min, t_max, [int n]);
-\end{verbatim}
-\texicomment
-Mathematically, these commands draw parametric paths
-\begin{align*}
-  \text{Spline:}\quad&(1-t)^2 p_1 + 2(1-t)t p_2 + t^2 p_3,
-    && t\in[0,1] \\
-  \text{Spline:}\quad&(1-t)^3 p_1 + 3(1-t)^2t p_2 + 3(1-t)t^2 p_3 + t^3p_4,
-    && t\in[0,1] \\
-  \text{Arc:}\quad&\mathrm{ctr} + (\cos t)(\mathrm{rad},0,0)
-                + (\sin t)(0,\mathrm{rad},0),
-    && t\in[t_\mathrm{min}, t_\mathrm{max}] \\
-  \text{Ellipse:}\quad&\mathrm{ctr} + (\cos t)v_1 + (\sin t)v_2, 
-    && t\in[t_\mathrm{min}, t_\mathrm{max}].
-\end{align*}
-\texicommentend
-If parameter bounds are omitted in an \code{ellipse} command, the
-entire ellipse is drawn.  When the angular range subtends one or more
-full turns in an \code{arc}~or \code{ellipse} the curve is subject to
-filling.
-
-Commands for planar (half-)ellipses remain from \ePiX's early days:
-\findex{ellipse}
-\findex{ellipse\_left}
-\findex{ellipse\_right}
-\findex{ellipse\_top}
-\findex{ellipse\_bottom}
-\begin{verbatim}
-  ellipse(P ctr, P radius);
-  ellipse_left(P ctr, P radius);
-  ellipse_right(P ctr, P radius);
-  ellipse_top(P ctr, P radius);
-  ellipse_bottom(P ctr, P radius);
-\end{verbatim}
-If \code{radius} is \code{P(a,b)}, these commands draw all or half of
-the ellipse with given center in the \teximath{(x_1,x_2)} plane, axes
-parallel to the coordinate axes, and axis lengths \teximath{2a}~and
-\teximath{2b}.
-
-Two commands are available to mark off right angles or a subtended
-angle. Each accepts a spatial location and two non-zero directions,
-and draws a scene element in the plane spanned by the vectors.
-\findex{right\_angle}
-\findex{arc\_measure}
-\begin{verbatim}
-  right_angle(P loc, P v1, P v2, scale=8);
-  arc_measure(P loc, P v1, P v2, scale=8);
-  arc_measure(P loc, P v1, P v2, offset, text, align, scale=8);
-\end{verbatim}
-The \code{right\_angle} command does not check its arguments for
-perpendicularity. The \code{arc\_measure} commands mark the
-\emph{small} angle subtended by the directions; the label form places
-a label at the midpoint of the arc. The (optional) \code{scale}
-argument is the true size in~\code{pt} of the marker.
-
-
-\subsubsection*{Recursive Fractal Curves}  
-
-\index{Path!fractal}
-Consider a path made up of equal-length segments that can point at any
-angle of the form~\teximath{2\pi k/n} radians, for \teximath{0\leq
-k<n}, like spokes on a wheel. A path is specified by a finite sequence
-of integers, taken modulo~\teximath{n}. For example, if
-\teximath{n=6}, then the sequence \teximath{0, 1, -1, 0} corresponds
-to the ASCII path \verb+_/\_+.  \ePiX's fractal approximation starts
-with such a ``seed'' then recursively (up to a specified depth)
-replaces each segment with a scaled and rotated copy of the seed,
-Figure~\ref{fig:fractal}. The seed above generates the standard
-von~Koch snowflake fractal. In code: 
-\findex{fractal}
-\begin{verbatim}
-  const int seed[] = {6, 4, 0, 1, -1, 0};
-  fractal(P(a,b), P(c,d), depth, seed);
-\end{verbatim}
-The first entry of \code{seed[]} (here~6) is the number of
-``spokes''~\teximath{n}, the second~(4) is the number of terms in the
-seed, and the remaining entries are the seed proper. The final path
-joins \teximath{(a,b)}~to \teximath{(c,d)}. The number of segments in
-the final path grows exponentially in the depth, so depths larger than
-5~or 6 are likely to exceed the capabilities of \LaTeX\ and/or
-PostScript.
-\begin{figure}[hbt]
-  \begin{center}
-  \input{koch.eepic}
-  \end{center}
-  \caption{Successive iterations of \{\code{4,8,0,1,0,3,3,0,1,0}\}}
-  \label{fig:fractal}
-\end{figure}
-
-
-\subsubsection*{Arrows}
-
-\index{Arrow}
-Line segments, splines, and arcs can be drawn with arrowheads at one
-end.  In profile, an arrowhead's width is \code{3pt}, and its height
-is 5.5~times the width.  The actual printed height depends on the
-head's orientation with respect to the camera.  By default, an
-arrowhead is a filled triangle. The shape and size are adjusted with
-declarations:
-\findex{arrow\_width}
-\findex{arrow\_ratio}
-\findex{arrow\_inset}
-\begin{verbatim}
-  arrow_width(w=3);   // width in pt
-  arrow_ratio(r=5.5); // height-to-width
-  arrow_inset(c=0);   // base indent as frac of ht
-\end{verbatim}
-\input{arrow.eepic} Inset\teximath{=0}\qquad
-\input{arrow25.eepic} Inset\teximath{=0.25}\qquad
-\input{arrow50.eepic} Inset\teximath{=0.5} \\
-The \code{inset} must be between \teximath{-1}~and \teximath{1}. Each
-\code{arrow} command accepts an optional \code{scale} argument, which
-scales the arrowhead.
-\findex{arrow}
-\begin{verbatim}
-  arrow(P tail, P tip, [scale]);
-  arrow(P p1, P p2, P p3, [scale]);   // spline arrows
-  arrow(P p1, P p2, P p3, P p4, [scale]);
-  arrow(P ctr, P v1, P v2, t_min, t_max, [scale]); // ellipse
-\end{verbatim}
-A few ``special-purpose'' commands are supplied:
-\findex{dart}
-\findex{aarrow}
-\findex{arc\_arrow}
-\begin{verbatim}
-  dart (P p1, P p2);  // same as arrow(p1, p2, 0.5);
-  aarrow(P p1, P p2); // double-headed arrow <--->
-  arc_arrow(ctr, rad, t_min, t_max, [scale]);
-\end{verbatim}
-If an \code{arc\_arrow} is too short, nothing is drawn.
-
-
-\subsection{Coordinate Axes and Labels} 
-
-\index{Labels!axis|(}
-\index{Axes!labeling}
-\index{Axes|(}
-\ePiX\ provides an \code{axis} class for coordinate axes. Labels are
-generated automatically in a variety of styles: decimal, scientific
-notation, fraction, and trigonometric fraction. Logarithmic axes and
-labels are available. Axis and labeling commands from Version~1.0 have
-been retained.
-
-
-\subsubsection*{The \code{axis} Class}
-
-An \code{axis} consists of a line segment divided into a specified
-number of equal-length subintervals by ``major'' (long) tick marks.
-Each subinterval may be divided further by ``minor'' (short) tick
-marks.  Minor ticks may be equally-spaced (``Cartesian'') or
-logarithmically placed. Finally, a label is written at each major tick
-mark with specified offset and alignment. Labels are generated
-automatically from the endpoints, so the line should be parallel to a
-coordinate axis. Label attributes (masking, borders, font size and
-face, rotation angle) are determined by the current label style, not
-by the \code{axis}.
-
-The command
-\findex{axis}
-\begin{verbatim}
-  axis(P tail, P head, int n, P offset=P(0,0), [align = none]);
-\end{verbatim}
-creates an axis joining \code{tail} to \code{head}, divided into
-\code{n}~segments of equal length, with a major tick mark and label at
-each division point and endpoint. The \code{offset} and \code{align}
-arguments have the same meaning as for ordinary labels.
-
-The number and length of minor ticks, and the alignment of ticks, are
-controlled with member functions:
-\findex{axis.subdivide}
-\findex{axis.tick\_ratio}
-\findex{axis.align}
-\begin{verbatim}
-  axis Ax(P(a,c), P(b,c), n);
-  Ax.subdivide(n);  // put n-1 minor ticks in each axis segment
-  Ax.tick_ratio(r); // minor length = r*major length
-  Ax.align(AL=c);   // align all ticks; AL = t, b, l, r, or c
-\end{verbatim}
-By default, major ticks are \code{6pt}~long and twice the length of
-minor ticks. The global declaration \code{tick\_size(len)} sets the
-major length, subject to ``reasonable stylistic limits''. For visual
-consistency, tick lengths should not be changed casually. 
-
-\index{Axes!labeling}
-Labels on an \code{axis} may be drawn in several styles, selected with
-member functions:
-\findex{axis.dec}
-\findex{axis.frac}
-\findex{axis.trig}
-\findex{axis.sci}
-\findex{axis.unmark}
-\findex{axis.precision}
-\findex{axis.align\_labels}
-\begin{verbatim}
-  Ax.dec();  // decimals (default)
-  Ax.frac(); // fractions, e.g. 0.5 -> \frac{1}{2}
-  Ax.trig(); // fractional multiples of \pi
-  Ax.sci();  // scientific notation, k\times base^N
-
-  Ax.unmark(double); // remove label at selected location
-  Ax.precision(p);   // set number of digits for decimal labels
-  Ax.align_labels(AL); // re-align labels
-\end{verbatim}
-Arbitrary textual labels depending on one coordinate are obtained by
-writing a \code{string}-valued function of~\code{double} and
-``registering'' it:
-\findex{axis.label\_rep}
-\begin{verbatim}
-  // f represents x as a string in given precision and base
-  std::string f(double x, unsigned int prec, unsigned int base);
-  Ax.label_rep(f);
-\end{verbatim}
-For example, textual tags can be printed instead of numeric labels.
-
-By default, an \code{axis} is Cartesian. The member function
-\code{log(int b=10)} converts an \code{axis} to ``log mode'' with
-specified base; this affects both tick marks and labeling. If \code{b}
-is at least~3, minor tick marks appropriate for a logarithmic axis
-base~\code{b} are drawn. Second, labels are written in decimal or
-scientific notation appropriately for a logarithmic axis; that is,
-``\teximath{k\times b^N}'' (or its decimal value) is written at
-location \teximath{N+\log_b k}.
-
-Minor ticks of a log \code{axis} may be labeled individually; again,
-this is controlled with member functions:
-\findex{axis.tag}
-\findex{axis.tag235}
-\findex{axis.tags}
-\findex{axis.untag}
-\begin{verbatim}
-  Ax.tag(d);   // labels at N+log_b(d)
-  Ax.tag235(); // tag 2, 3, and 5 if b=10
-  Ax.tags();   // tag 1, ..., b-1
-  Ax.untag();  // remove all tags, including 1
-  Ax.untag(double);  // remove one tag, e.g. Ax.untag(9);
-\end{verbatim}
-
-For convenience, an \code{axis} object along an edge of the active
-\code{screen} can be created with a named command:
-\findex{top\_axis}
-\findex{bottom\_axis}
-\findex{left\_axis}
-\findex{right\_axis}
-\begin{verbatim}
-  top_axis(n, offset, align);
-  bottom_axis(n, offset, align);
-  left_axis(n, offset, align);
-  right_axis(n, offset, align);
-\end{verbatim}
-The ticks automatically point into the bounding box.
-
-The functions above create objects or set \code{axis} attributes, but
-write no output. Tick marks and labels can be printed separately, or
-at once:
-\findex{axis.draw}
-\findex{axis.draw\_ticks}
-\findex{axis.draw\_labels}
-\begin{verbatim}
-  Ax.draw();        // axis, tick marks, and labels
-  Ax.draw_ticks();  // axis and ticks only
-  Ax.draw_labels();
-\end{verbatim}
-
-
-\subsubsection*{Other Axis-Drawing Commands}
-
-\index{Axes!logarithmic}
-\ePiX\ formerly supplied commands for drawing simple axes and their
-labels. These commands have been kept for compatibility.  Horizontal
-axes are generated with
-\findex{h\_axis}
-\findex{h\_log\_axis}
-\findex{v\_axis}
-\findex{v\_log\_axis}
-\begin{verbatim}
-  h_axis(p1, p2, n, align=c);    // n subintervals (n+1 ticks)
-  h_log_axis(p1, p2, n, align=c, base=10);
-\end{verbatim}
-For vertical axes, use \code{v\_axis}.  The style of tick mark is
-appropriate for an axis of the given type.  Horizontal axis tick marks
-may be aligned \code{t}~(above the axis) or~\code{b}
-(below). Similarly, vertical axis ticks may be aligned \code{r}~or
-\code{l}.
-
-The endpoint arguments of a coordinate axis may be omitted, in which
-case they default to \teximath{p_1=(x_\mathrm{min},0)} and
-\teximath{p_2=(x_\mathrm{max},0)} for a horizontal axis, or to
-\teximath{p_1=(0,y_\mathrm{min})} and
-\teximath{p_2=(0,y_\mathrm{max})} for a vertical axis. If the bounding
-box has integer width and/or height, omitting the number of points
-draws tick marks one unit apart.
-
-Labels for a horizontal Cartesian or logarithmic axis are generated
-with the commands
-\findex{h\_axis\_labels}
-\findex{h\_axis\_masklabels}
-\findex{h\_axis\_log\_labels}
-\findex{h\_axis\_log\_masklabels}
-\findex{v\_axis\_labels}
-\findex{v\_axis\_masklabels}
-\findex{v\_axis\_log\_labels}
-\findex{v\_axis\_log\_masklabels}
-\begin{verbatim}
-  h_axis_labels(P p1, P p2, int n, P offset, [align]);
-  h_axis_masklabels(p1, p2, n, offset, [align]);
-  h_axis_log_labels(p1, p2, [n], offset, [align], base=10);
-  h_axis_log_masklabels(p1, p2, [n], offset, [align], base=10);
-\end{verbatim}
-Labels for a vertical axis are generated with \code{v\_axis\_labels},
-etc. The labels are automatically generated to match their horizontal
-location.  The first puts \teximath{(n+1)}~evenly-spaced labels on the segment
-joining \code{p1}~and \code{p2}. As with ordinary labels, the
-\code{offset} is in~\code{pt}, and the optional \LaTeX-style alignment
-option positions the labels using their corners.  The second command
-draws masked labels according to the current label masking
-attributes. The third writes labels in exponential notation, using the
-Cartesian coordinate as exponent.
-
-As for coordinate axes, the initial and final points may be omitted in
-an \code{axis\_[mask]labels} command, with the same defaults.  The
-\code{offset} and number of labels must always be specified.
-
-
-\subsubsection*{Broken Axes}
-\index{Axes!broken}
-
-Broken axes are best drawn using page layout, especially if axis
-labels are to be drawn. To accomplish the task, create a screen for
-each piece of axis, using appropriate Cartesian coordinates for the
-corners, then \code{inset} the screens so the axis pieces are nearly
-end to end. A zig-zag glyph signifies the break:
-\findex{axis\_break}
-\begin{verbatim}
-  axis_break(P, P, scale=12);
-\end{verbatim}
-The \code{P} arguments are the screen coordinates of the ends to be
-joined; the optional third argument is the true height and width
-in~\code{pt} of the glyph. The sample file \filename{coord\_tricks.xp}
-uses layout and axis breaks.
-
-
-\subsubsection*{Coordinate Grids}
-
-Cartesian grids fill a coordinate rectangle, and have a specified
-number of lines in each direction. A polar grid has specified radius,
-and numbers of rings and sectors.
-\findex{grid}
-\findex{polar\_grid}
-\begin{verbatim}
-  grid(n1, n2);         // fills the bounding box
-  grid(p1, p2, n1, n2); // fills the box with corners p1, p2
-  polar_grid(r, n1, n2);
-\end{verbatim}
-
-Log and semi-log grids are drawn with analogous syntax:
-\findex{log\_grid}
-\findex{log1\_grid}
-\findex{log2\_grid}
-\begin{verbatim}
-  log_grid (p1, p2, n1, n2, [base1], [base2]); // log-log
-  log1_grid(p1, p2, n1, n2, [base]);           // log-lin
-  log2_grid(p1, p2, n1, n2, [base]);           // lin-log
-\end{verbatim}
-The~\teximath{n_i} arguments dictate the number of squares, namely the number
-of orders of magnitude spanned in the logarithmic direction(s).  The
-(optional) base arguments default to~10, and control the number of
-lines drawn per order of magnitude. As with Cartesian grids, the
-corners are optional; if omitted, the grid fills the bounding box.
-
-\index{Graph paper}
-Graph paper may be created by superimposing grids:
-\texicomment
-\begin{center}
-  \begin{minipage}[b]{2.5in}
-    \begin{footnotesize}
-\texicommentend
-\findex{pen}
-\findex{grid}
-\begin{verbatim}
-  pen(0.25);
-  grid(10*xsize(), 10*ysize());
-  pen(0.5);
-  grid(2*xsize(), 2*ysize());
-  pen(1);
-  grid(xsize(), ysize());
-\end{verbatim}
-\texicomment
-    \end{footnotesize}
-  \end{minipage}
-  \qquad
-  \input{graphpaper.eepic}
-\end{center}
-\index{Axes|)}
-\texicommentend
-
-\subsection{The Path Class}
-
-\index{Path!class}
-A \code{path} data structure is an ordered list of points that can be
-cropped, clipped, mapped, concatenated, and drawn.  The first four
-constructors mirror polygon-drawing commands above.  Function graphs
-and parametric paths are built from a real- or \code{P}-valued
-function~\code{f} of one variable.
-\findex{path}
-\begin{verbatim}
-  path(p1, p2, expand=0);     // line (endpoints)
-  path(p1, p2, p3, [n]);      // quadratic spline
-  path(p1, p2, p3, p4, [n]);  // cubic spline
-  path(p1, v1, v2, t_min, t_max, [n]); // ellipse
-  path(f, t_min, t_max, [n]);
-\end{verbatim}
-
-The member function \code{pt()} accepts a~\code{P} or three (or two)
-doubles and appends the specified point to a \code{path}.  This
-snippet creates a regular \teximath{n}-gon:
-\begin{verbatim}
-  path ngon; // declare new path
-  for (int i=0; i<=n; ++i)
-    ngon.pt(cis(i*full_turn()/n)); // works in all angle modes
-\end{verbatim}
-Compound paths may be built by concatenation.  If \code{path1}~and
-\code{path2} share an endpoint, the commands
-\begin{verbatim}
-  path1 += path2;
-  path1 -= path2;
-\end{verbatim}
-replace \code{path1} with the result of traversing \code{path1}
-``forward'', then following \code{path2} in the forward or reverse
-direction (respectively). For expected results, the first
-(or last) point on~\code{path2} should be the last point
-of~\code{path1}. The notation suggests 1-dimensional homology
-chains. The sample file \filename{contour.xp} illustrates path
-creation and manipulation.
-
-A \code{path} is a data structure, and must be drawn explicitly to
-create visible output. By default a \code{path} is not a closed loop
-(even if the first and last points are the same), and is not filled
-when drawn. Member functions perform these tasks. Continuing the
-\teximath{n}-gon snippet above,
-\findex{path.close}
-\findex{path.fill}
-\findex{path.draw}
-\begin{verbatim}
-  ngon.close(); // mark path as closed
-  ngon.fill();  // draw filled region if filling is active
-  ngon.draw();  // print to the screen
-\end{verbatim}
-\code{path::close()} adds a closing edge if necessary. Once a
-\code{path} is closed, no more points can be added. A closed path
-clips and crops differently than an open \code{path} with the same
-data. \code{path::fill()} has no effect on an unclosed \code{path}.
-
-
-\subsection{Function Plotting}
-
-\index{Plotting|(}
-The noun ``map'' refers to a \CXX\ function that accepts one or
-more \code{double} arguments and returns a \code{double}~or
-a~\code{P}. Mathematically, a map can be depicted in two ways: as a
-graph (which retains information about the domain), or as a
-parametrized curve or surface (which discards domain
-information). \ePiX\ assumes that \code{double}-valued maps are
-graphed and \code{P}-valued maps are drawn parametrically. Either sort
-of depiction is called a ``plot''.  \ePiX\ plots are either ``wire
-mesh'', produced by a \code{plot} command, or ``shaded'', produced by
-a \code{surface} command.
-
-
-\subsubsection*{Basic Plotting}
-
-For the moment, ``function'' means ``function of one variable''
-(precisely, a \code{double}-valued function of a \code{double}
-variable). A function graph depends on the domain and the number of
-points to use. Each of the commands
-\findex{plot}
-\findex{polarplot}
-\findex{shadeplot}
-\begin{verbatim}
-  plot(f, t_min, t_max, n);
-  polarplot(f, t_min, t_max, n);
-  shadeplot(f, t_min, t_max, n);
-\end{verbatim}
-graphs the function~\code{f} on the interval \code{[t\_min, t\_max]}
-by dividing the interval into \code{n}~subintervals of equal length.
-The first gives a Cartesian plot, the second a polar plot with bounds
-in current angular units, the third shades the region between the
-graph and the horizontal axis. If two functions are given to
-\code{shadeplot}, the region between their graphs is shaded.
-
-
-\subsubsection*{Domains and Wiremesh Plots}
-
-\index{Domain|(}
-An \ePiX\ \code{domain} is a coordinate box of dimension one, two, or
-three, specified by a pair of opposite corners and two \emph{meshes}
-(``coarse'' and ``fine'', respectively) which specify the amount of
-data to be plotted. Plotting is explained in detail below.
-\findex{domain}
-\begin{verbatim}
-  // [a1,a2] x [b1,b2]: n1 x n2 rectangles, m1 x m2 intervals
-  domain R2(P(a1,b1), P(a2,b2), mesh(n1,n2), [mesh(m1,m2)]);
-
-  // [a1,a2] x [b1,b2] x [c1,c2] divided analogously
-  domain R3(P(a1,b1,c1), P(a2,b2,c2),
-            mesh(n1,n2,n3), [mesh(m1,m2,m3)]);
-\end{verbatim}
-If unspecified, the fine mesh is the same as the coarse mesh. For
-expected behavior, the coarse mesh should ``divide'' the fine mesh, in
-that \teximath{m_i}~should be a (usually small) integer multiple
-of~\teximath{n_i} for each~\teximath{i}.
-
-A \code{domain} may be \emph{resized} in any coordinate for which the
-thickness is positive, and can be \emph{sliced} by setting one
-variable to a constant. The result of slicing is a \code{domain} whose
-dimension is one smaller than the original.  Finally,
-``\code{slices}'' operators return the list of \code{domain}s obtained
-by setting one variable to evenly-spaced constants.  By default, the
-number of slices is specified by the coarse mesh. An optional argument
-specifies the number of slices. This argument need not be related to
-the coarse mesh.
-\findex{domain.resize}
-\findex{domain.slice}
-\findex{domain.slices}
-\begin{verbatim}
-  R2.resize2(a,b); // [a1,b1] x [a,b]
-  R2.slice1(t);    // set x1 = t
-  R3.slices3([n]); // (n+1) domains with x3 = const
-\end{verbatim}
-\begin{center}
-  \input{slices.eepic}
-\end{center}
-\smallskip
-When possible, resizing preserves grid square sizes. Generally,
-though, integer truncation occurs: If \code{R=domain(P(0,0), P(1,1),
-mesh(10,6))}, then \code{R.resize1(0,0.25)} is the rectangle
-\teximath{[0,0.25]\times[0,1]} subdivided into \teximath{2\times6}
-subrectangles, since \teximath{10\div4=2} in integer arithmetic. For
-expected behavior, choose mesh sizes to avoid integer truncation.
-
-
-The arguments of a \code{plot} command are a map, followed by either a
-domain or its logical equivalent.
-\findex{plot}
-\begin{verbatim}
-  double f(double t) { return t*t; }
-  P F(double u, double v) { return P(u, v, exp(u)*Sin(v)); }
-  P G(double u, double v, double w) { return P(v*w, u*w, u*v); }
-
-  plot(f, a, b, n);       // f:[a,b] -> R, using n intervals
-  plot(F, R2);            // graph of exp(u)*Sin(v)
-  plot(G, R3.slice2(0.5); // G: R^3 -> R^3 restricted to y=0.5
-\end{verbatim}
-By (compiler-enforced) convention, \code{plot} commands involving a
-\code{P}-valued map accept a \code{domain} argument, as in the second
-and third commands above. To plot a \code{double}-valued function, by
-contrast, supply the logical equivalent of a \code{domain}, usually
-the endpoints and the number of intervals, as in the first \code{plot}
-command above.
-
-Resizing and slicing allow a map~\code{F} to be plotted selectively
-over parts of its domain. This can be used to emphasize parts of the
-image, layer scene elements, patch surfaces together, and so forth.
-Resize and slice(s) commands may be used directly in a \code{plot}
-command:
-\findex{plot}
-\begin{verbatim}
-  plot(F, R2.resize1(0,0.5));
-  plot(F, R2.slices1());
-\end{verbatim}
-
-
-\subsubsection*{Meshes and Plotting}
-
-The \code{P}~arguments of a \code{domain} are a pair of opposite
-corners. The first \code{mesh} argument, the \emph{coarse} mesh,
-specifies the number of subdivisions in each coordinate direction.
-The second \code{mesh}, the \emph{fine} mesh, determines the number of
-points used in each direction when plotting.
-
-\begin{comment}
-Suppose the \code{domain}~\code{R2} is, as above, the rectangle
-\teximath{[0,3]\times[-1,2]}. The argument \code{mesh(12,6)} divides the
-rectangle a \teximath{12\times6}~array of subrectangles known as the
-\emph{coarse mesh}. A \code{P}-valued map~\code{F} of two variables is
-plotted over the edges of the coarse mesh. Rather than drawing
-quadrilaterals, however, \ePiX\ draws the image curves at the
-resolution specified by the argument \code{mesh(60,60)}, the
-\emph{fine mesh}. In this example, the curves in each direction are
-drawn using 60~line segments.
-\end{comment}
-
-Separating the roles of coarse and fine meshes allows a plot to
-conform closely to a surface without using a fine grid of curves.
-Both parts of Figure~\ref{fig:plot} are drawn with a
-\teximath{6\times20} coarse mesh. In the first picture, the fine mesh
-is also \teximath{6\times20}, while in the second, the fine mesh is
-\teximath{12\times60}.
-
-\begin{figure}[hbt]
-  \begin{center}
-    \input{plot_a.eepic}\hspace*{0.5in}
-    \input{plot_b.eepic}
-    \caption{Coarse and fine meshes.}
-    \label{fig:plot}
-  \end{center}
-\end{figure}
-
-The coarse mesh is significant only for domains of dimension at
-least~2. The coarse mesh's size determines the number of curves or
-surfaces plotted \emph{perpendicularly} to a coordinate direction,
-while the fine mesh's size determines the number of segments used
-\emph{along} that direction.  For predictable results, the fine mesh
-should be a small multiple of the coarse mesh.
-
-Plotting works analogously for 3-dimensional \code{domain}s and maps
-depending on three variables: The ``one-dimensional skeleton'' of the
-\code{domain}'s image is drawn.  A \code{P}-valued map of
-three variables can be plotted over a 1-~or 2-dimensional
-\code{domain}. (The effect may be unexpected unless the domain arises
-by slicing, however.) A map depending on one or two variables cannot
-be plotted over a 3-dimensional \code{domain}.
-\index{Domain|)}
-
-
-\subsubsection*{Shaded Surfaces}
-
-\index{Plotting!surface|(}
-
-\ePiX's shaded surface plotting implements a degree of hidden surface
-removal. The algorithm breaks a surface into mesh fragments, sorts
-them in decreasing (approximate) distance to the camera, and prints
-them.  If filling is active, a mesh fragment is shaded according to
-the angle between the normal vector and the direction to the camera,
-simulating constant ambient lighting; otherwise, the current fill
-color is used.  This technique works fairly well for surfaces without
-intersection, and even acceptably handles intersecting surfaces for
-which mesh elements intersect only along boundaries.
-
-The syntax of a \code{surface} command is identical to a \code{plot}
-command when only a single surface is drawn. For example,
-\findex{surface}
-\begin{verbatim}
-  surface(F, R, cull=0);
-\end{verbatim}
-plots the \code{P}-valued function~\code{F} over the domain~\code{R},
-the shaded equivalent of the corresponding \code{plot} command. The
-optional \code{cull} argument removes elements that point toward
-(\code{cull=-1}) or away from (\code{cull=1}) the camera. Naturally,
-orientation of mesh elements depends on the parametrization~\code{F},
-not merely on the surface. Culling reduces the output file size, but
-is useful mostly for closed, convex surfaces.
-
-There are special commands for surfaces of rotation; each accepts a
-final \code{cull} argument.
-\findex{surface\_rev}
-\begin{verbatim}
-  surface_rev(f, t_min, t_max, n_lats, n_longs);
-  surface_rev(f, g, t_min, t_max, n_lats, n_longs=24);
-  surface_rev(f, g, R, frame coords);
-\end{verbatim}
-The first revolves the graph of~\teximath{f} about the
-\teximath{x}-axis, the second uses the parametric curve
-\teximath{t\mapsto\bigl(f(t),g(t)\bigr)} as profile. In each case, the
-parameter interval \verb+[t_min,t_max]+ is divided into \verb+n_lats+
-equal-length subintervals, \verb+n_longs+ copies of the profile curve
-are drawn, and the complete surface (one full turn) is drawn.
-
-The third form uses a \code{domain} to control the range of
-longitudes, and draws a surface of rotation in the Cartesian
-coordinate system defined by the orthonormal basis \code{coords}, by
-default the standard basis. The arguments \code{f}~and \code{g} define
-a parametric curve in the plane spanned by the first two elements
-of~\code{coords}, and the first element is the axis of rotation.
-
-As in wire mesh plotting, the fine mesh is used to draw the boundaries
-of surface patches; this tends to make surfaces look smoother for
-modest-sized coarse meshes. If the coarse mesh is too coarse, however,
-two visually undesirable effects can occur. First, adjacent regions of
-the surface may be shaded very differently, since shading is constant
-over patches defined by the coarse mesh. Second, a patch nearly
-tangent to a line of sight may be drawn badly if the patch bends back
-on itself, since the boundary of the \emph{patch} is drawn, not the
-visible edge of the mathematical surface. See
-\filename{samples/artifacts.xp}.
-
-
-\subsubsection*{Multiple Domains and/or Maps}
-
-A scene containing two or more shaded surfaces cannot generally be
-built up one surface at a time. Instead, multiple surfaces must be
-assembled into a single data structure before they can be drawn.
-Multiple surfaces are built from one or more maps and one or more
-2-dimensional \code{domain}s. In the code snippets below, \code{F}~and
-\code{G} are \code{P}-valued functions of 3~variables, and~\code{R} is
-a 3-dimensional \code{domain}.
-
-To plot the images of several \code{domain}s under a \emph{single
-map}, assemble the \code{domain}s into a list if necessary, then issue
-a \code{surface} command:
-\findex{surface}
-\findex{domain\_list}
-\findex{domain\_list.add}
-\begin{verbatim}
-  surface(F, R.slices3(), cull=0);
-
-  domain_list DL(R.slice1(0));  // build domain list
-  DL.add(R.slice2(0.5));        // add a domain, etc.
-  surface(G, DL, cull=0);       // draw
-\end{verbatim}
-For multiple maps, \ePiX\ provides the \code{scenery}
-class. Conceptually, \code{scenery} is an agglomeration of shaded
-surfaces, built one surface at a time from maps and 2-dimensional
-\code{domain}s. The \code{add} function accepts two arguments---a map,
-and either a \code{domain} or a list of \code{domain}s---and
-contributes its data to the \code{scenery} rather than plotting
-immediately. Completed \code{scenery} is drawn manually.
-\findex{scenery}
-\findex{scenery.add}
-\findex{scenery.draw}
-\begin{verbatim}
-  scenery S(F, R.slice3(0.25)); // S contains one surface
-  S.add(F, R.slice2(0));        // S contains two surfaces
-  S.add(G, R.slices1(3));       // S contains six surfaces
-  S.draw(cull=0);
-\end{verbatim}
-Complete examples are included in the \filename{samples} directory:
-\filename{spherical.xp}~and \filename{minkowski.xp}.
-
-In principle, a scene may contain arbitrarily many surfaces. However,
-figures that contain many objects tend to tax \LaTeX's internal
-stacks. Frequent color changes exacerbate the problem.  Even if you
-use \filename{hugelatex} (or increase \LaTeX's memory), a figure
-containing more than a few thousand mesh elements is unlikely to
-compile. At moderate resolution, a surface can easily contain
-1000~patches. Each shell script has a command-line option to invoke
-\filename{hugelatex}; your mileage may vary.
-
-
-\subsubsection*{User-Specified Color Shading}
-
-\index{Color!surface plotting}
-By default, a \code{surface} or \code{scenery} is colored according to
-the current fill color. For finer control, each \code{surface},
-\code{surface\_rev}, and \code{scenery} command accepts an optional
-position-dependent \code{color} specification.
-\findex{surface}
-\findex{surface\_rev}
-\findex{scenery}
-\findex{scenery.add}
-\begin{verbatim}
-  surface(F, R, color, cull=0);
-  surface_rev(f, [g], t_min, t_max, n_lats, n_longs, color);
-  surface_rev(f, g, R, color, [coords]);
-
-  scenery S(F, R, color);
-  S.add(F, R, color);
-\end{verbatim}
-The \code{color} argument is a \code{P}-valued function of two or
-three \code{double}s whose output is interpreted as a set of
-\code{RGB}~densities. If \code{color} takes two arguments, they are
-\code{domain} coordinates, and the surface is colored according to
-parameter values. If \code{color} takes three arguments, they are
-Cartesian coordinates, and the surface is colored according to spatial
-location.  Please see the sample files
-\filename{surface\_shade.xp}~and \filename{S2\_harmonics.xp}. 
-\index{Plotting!surface|)}
-
-
-\subsection{Calculus Plotting} 
-\index{Plotting!calculus|(}
-
-\ePiX\ provides high-level commands for plotting derivatives and
-definite integrals, Riemann sums, tangent lines, slope- and vector
-fields, and solutions of planar and spatial systems of differential
-equations.
-
-In this section, \code{f}~and \code{g} are \code{double}-valued
-functions of one variable.
-
-\subsubsection*{Utility Functions}
-
-\findex{sup}
-\findex{inf}
-\findex{newton}
-\begin{verbatim}
-  sup(f, a, b);     // max/min of f on [a,b]
-  inf(f, a, b);
-  newton(f, g, x0); // find approximate crossing point
-\end{verbatim}
-Newton's method returns the crossing point of the given functions,
-starting from the specified seed, which should be reasonably close to
-the expected solution. If a critical point is hit or 5~iterations
-pass, a warning is issued and the current result (probably incorrect)
-is returned. The second function~\teximath{g} defaults to the zero function if
-omitted.
-
-\subsubsection*{Derivatives and Integrals}
-
-The classes \code{Deriv}~and \code{Integral} are used to calculate
-values of derivatives and integrals, and to plot these functions.
-\findex{Deriv}
-\findex{Deriv.eval}
-\findex{Deriv.left}
-\findex{Deriv.right}
-\findex{Integral}
-\findex{Integral.eval}
-\begin{verbatim}
-  Deriv df(f); // function object: df(x) = f'(x)
-  df.eval(t);  // return f'(t)
-  df.left(t);  // deriv from left at t:  (f(t)-f(t-dt))/dt
-  df.right(t); // deriv from right at t: (f(t+dt)-f(t))/dt
-
-  Integral prim(f,a); // function object: prim(x) = int_a^x f
-  prim.eval(b);  // numerical integral of f over [a,b]
-  double val(Integral(f).eval(1));   // val = \int_0^1 f
-\end{verbatim}
-The lower limit on an integral is~0 by default. \code{Deriv}s and
-\code{Integral}s can be used directly in a \code{plot} command:
-\findex{plot}
-\findex{riemann\_sum}
-\begin{verbatim}
-  plot(Deriv(f), a, b, n);  // plot f' over [a,b]
-  plot(Integral(f, x0), a, b, n);
-  riemann_sum(f, a, b, n, TYPE);
-\end{verbatim}
-The second graphs the definite integral \teximath{x\mapsto\int_{x_0}^x
-f(t)\,dt} over~\teximath{[a,b]}. As above, \teximath{x_0}~defaults
-to~0. The third draws rectangles or trapezoids whose area approximates
-the definite integral of~\teximath{f} over~\teximath{[a,b]}. The
-\code{TYPE} may be \code{UPPER}, \code{LOWER}, \code{LEFT},
-\code{RIGHT}, \code{MIDPT}, or~\code{TRAP}.
-
-Tangent lines and envelopes (families of tangent lines) are drawn with
-\findex{tan\_line}
-\findex{envelope}
-\findex{tan\_field}
-\begin{verbatim}
-  tan_line(f, t);                // f real- or vector-valued
-  envelope(f, t_min, t_max, n);  // family of tangent lines
-  tan_field(f, g, t_min, t_max, n); // field of tangents
-\end{verbatim}
-The sample files \filename{conic.xp}~and \filename{lissajous.xp}
-illustrate these features.
-
-
-\subsubsection*{Systems of Differential Equations}
-
-Let \code{F}~be a \code{P}-valued function of two or three variables.
-\findex{ode\_plot}
-\findex{flow}
-\begin{verbatim}
-  ode_plot(F, p_0, t_min, t_max, n); 
-  flow(F, p_0, t_max, n);
-\end{verbatim}
-The first plots the solution curve of the initial-value problem
-\teximath{\dot{x}=F(x)}, \teximath{x(0)=p_0}, over the specified time
-interval.  If \teximath{t_\mathrm{min}} is omitted, its value is~0, so
-the curve starts at~\teximath{p_0}. With manual calculation to rotate
-a planar field a quarter turn, \code{ode\_plot} can be used to draw
-level curves (isobars) of a function of two variables; see the sample
-file \filename{dipole.xp}.  The \code{flow} function returns the
-result of starting at~\teximath{p_0} and flowing by~\teximath{F} for
-time~\teximath{t_\mathrm{max}}, using Euler's method with~\teximath{n}
-time steps.  This is useful for placing markers or arrowheads precisely
-along a flow line.
-
-A planar or spatial vector field itself may be plotted over a
-domain~\code{R} in three styles:
-\findex{vector\_field}
-\findex{dart\_field}
-\findex{slope\_field}
-\begin{verbatim}
-  vector_field(F, R, [scale]); //  true length
-  dart_field  (F, R, [scale]); // const length
-  slope_field (F, R, [scale]); // const length
-\end{verbatim}
-The field is sampled at the grid points of the coarse mesh. If the
-domain is 2-dimensional, the plot is a planar slice of the field, even
-if the field depends on three variables. If the domain is
-3-dimensional, the field is drawn in successive slices
-\teximath{x_3=\mathrm{const}}, starting at the height of the first
-corner of~\code{R} and ending at the height of the second corner.
-
-The optional final argument, which defaults to~\teximath{1}, scales the
-arrowheads in a vector field, and scales the (constant) length of
-field elements for slope and dart fields. The sample files
-\filename{layout2.xp}, \filename{lorenz.xp}, \filename{slopefield.xp},
-and \filename{vfield.xp} illustrate usage.
-
-In each field-plotting command, the domain argument may be replaced by
-two points, representing corners of a coordinate rectangle, and two
-integers, the number of grid intervals in the selected coordinate
-directions. Only planar slices of a vector field can be plotted using
-the alternative syntax.
-\index{Plotting|)}
-
-
-\subsection{Non-Euclidean Geometry}
-\label{non-eucl}
-
-\ePiX\ provides limited features for spherical and hyperbolic
-geometry: the ability to draw lines in the half-plane and Poincar\'e
-disk models of the hyperbolic plane, and to draw latitudes,
-longitudes, great circle arcs, spherical triangles, regular polyhedra,
-and parametrized curves on a sphere.
-
-Hyperbolic line segments are specified by their endpoints in the upper
-half space or ball (Poincar\'e) models.  In each case there is no
-output if either endpoint lies outside the model.
-\findex{hyperbolic\_line}
-\findex{disk\_line}
-\begin{verbatim}
-  hyperbolic_line(p, q);
-  disk_line(p, q);
-\end{verbatim}
-For compatibility with 2-dimensional hyperbolic space, the half-space
-model is the set \teximath{\{(x_1,x_2,x_3)\mid x_2>0\}}.
-
-\index{Plotting!spherical|(}
-A \code{frame} determines geographical coordinates on a \code{Sphere}:
-the first element points toward longitude~0 on the equator, the third
-element points to the north pole.  A latitude line depends on a
-\code{Sphere}, a \code{frame}, the numerical latitude, and a range of
-longitudes. A longitude line is described similarly.
-\findex{latitude}
-\findex{longitude}
-\findex{back\_latitude}
-\findex{back\_longitude}
-\begin{verbatim}
-  latitude(lat, long_min, long_max, Sphere S, frame coords);
-  longitude(lngtd, lat_min, lat_max, Sphere S, frame coords);
-\end{verbatim}
-By default, \code{coords} is the standard \code{frame} and \code{S} is
-the unit sphere. These commands draw only the portion of the curve
-that is visible from the current viewpoint. The function
-\code{back\_latitude} draws the invisible portion of a latitude line.
-
-Spherical arcs and triangles are described by their endpoints. Only
-the direction vector from the center of the sphere to an endpoint is
-significant; if a sphere is scaled or moved, the same function call
-will draw the corresponding object on the new sphere. 
-
-The following draw the visible (front) portions of great circle arcs:
-\findex{front\_arc}
-\findex{front\_arc2}
-\findex{front\_line}
-\findex{back\_arc}
-\findex{back\_arc2}
-\findex{back\_line}
-\begin{verbatim}
-  front_arc(p1, p2, S);  // short arc on S from p1 to p2
-  front_arc2(p1, p2, S); // arc from p1 to -p1 through p2
-  front_line(p1, p2, S); // great circle through p1 and p2
-\end{verbatim}
-Triangles and regular (Platonic) polyhedra are provided. The sample
-file \filename{sample/polyhedra.xp} illustrates usage.
-\findex{front\_triangle}
-\findex{front\_tetra}
-\findex{front\_cube}
-\findex{front\_octa}
-\findex{front\_dodeca}
-\findex{front\_icosa}
-\findex{back\_triangle}
-\findex{back\_tetra}
-\findex{back\_cube}
-\findex{back\_octa}
-\findex{back\_dodeca}
-\findex{back\_icosa}
-\begin{verbatim}
-  front_triangle(p1, p2, p3, S); // spherical triangle
-  front_tetra(S, coords);  // regular tetrahedron
-  front_cube(S, coords);   //    hexahedron
-  front_octa(S, coords);   //    octahedron
-  front_dodeca(S, coords); //    dodecahedron
-  front_icosa(S, coords);  //    icosahedron
-\end{verbatim}
-Each function has a \code{back} version, which draws the hidden
-portion. The tetrahedron, cube, and octahedron are (up to scale)
-inscribed in the cube of side length~\teximath{2} centered at the origin whose
-sides are parallel to~\code{frame}. The point \teximath{(1,1,1)} is a vertex of
-the tetrahedron.
-
-Up to scale, the icosahedron's vertices lie on the golden rectangle
-with vertices \teximath{(\pm\gamma,0,\pm1)} and its images under cyclic
-permutation of coordinates. The dodecahedron is dual to the
-icosahedron.
-
-\subsubsection*{Spherical Plotting}
-
-Parametrized paths on a \code{Sphere~S} (by default the unit sphere)
-can be specified either by radial projection of a \code{P}-valued
-curve, or by stereographic projection of a plane curve given as a pair
-of \code{double}-valued functions:
-\findex{frontplot\_R}
-\findex{frontplot\_N}
-\findex{frontplot\_S}
-\findex{backplot\_R}
-\findex{backplot\_N}
-\findex{backplot\_S}
-\begin{verbatim}
-  frontplot_R(phi, t_min, t_max, n, [S]);    // radial
-  frontplot_N(f1, f2, t_min, t_max, n, [S]); // from north pole
-  frontplot_S(f1, f2, t_min, t_max, n, [S]); // from south pole
-\end{verbatim}
-Attempts to perform radial projection on a path through the origin
-will generate division-by-zero errors. Stereographic projection maps
-the equatorial plane \teximath{\{x_3=0\}} to the unit sphere by
-projection from the corresponding pole: \teximath{N=(0,0,1)},
-\teximath{S=(0,0,-1)}.
-
-Each spherical plot command has a \code{back} version that prints only
-the portion of the path invisible from the current viewpoint.
-Because of the way \ePiX\ layers output, it is generally best to put
-hidden portions of the input before visible portions, with line width
-and/or style that suggests hidden lines.
-
-
-\subsection{Data Plotting} 
-\index{Plotting!data|(}
-\index{Data plotting|(}
-
-Files of numerical data can be created, manipulated, analyzed,
-plotted (paths, scatter plots, and histograms), read, and written. 
-The format for a data file is one or more floating-point
-numbers per line, with the same number of entries per line. Anything
-that appears on a line after the \LaTeX\ comment character~\code{\%}
-is a comment. 
-
-\ePiX\ provides two \code{plot} commands for file data. The first
-facilitates plotting selected columns; the second simplifies plotting
-the first two columns with one or both scales logarithmic. Either form
-can be used to plot selected columns logarithmically.
-
-The general commands read numbers from two or three columns of a
-specified file, pass them as arguments to a \code{P}-valued
-function~\code{F}, and plot the resulting points:
-\findex{plot}
-\begin{verbatim}
-  plot("filename", STYLE, [i_1], [i_2], [i_3], [F]);
-  plot("filename", STYLE, F, [i_1], [i_2], [i_3]);
-\end{verbatim}
-The first argument is the name of the data file. The \code{STYLE} may
-be \code{PATH}, which joins the points in the order they appear, or
-any of the marker types in Table~\ref{table:marker}.  The
-integers~\teximath{i_k} specify columns from which to extract data; these
-default, respectively, to the first column, second column, and null (a
-column of zeroes). If the ``coordinate system''~\code{F} is omitted in
-the first command, it defaults to the Cartesian point constructor. The
-function~\code{F} is mandatory in the second form; useful choices
-include \code{log\_log}, \code{log\_lin}, and~\code{lin\_log}, which
-plot the corresponding coordinate logarithmically.
-
-
-\subsubsection*{Data Files}
-
-For more elaborate analysis, the \code{data\_file} class presents an
-interface to a file as an ordered list of columns. There are two
-general ways to create a \code{data\_file}: read in an external file,
-or generate data (up to three columns) using specified
-\code{double}-valued functions. In the constructors below, each
-function~\code{fi} is a \code{double}-valued function of one variable.
-\findex{data\_file}
-\findex{data\_file.read}
-\begin{verbatim}
-  data_file DF("my_data"); // read data from disk file
-  data_file DF(f1, t_min, t_max, num_pts); // values of f1
-  data_file DF(f1, f2, t_min, t_max, num_pts);
-  data_file DF(f1, f2, f3, t_min, t_max, num_pts);
-  data_file DF(3);  // create empty data_file with 3 columns
-  DF.read("file1"); // read a disk file
-\end{verbatim}
-
-Columns of a \code{data\_file} can be transformed by a user-specified
-function, averaged, correlated, extracted (for use by other code),
-scatter plotted, and written to a disk file at specified
-precision. Below, the function~\code{f} is a \code{double}-valued
-function of one variable and~\code{F} is a \code{P}-valued function of
-two or three variables, whose components are written back to the
-selected columns.
-\findex{data\_file.transform}
-\begin{verbatim}
-  DF.transform(f, i);    // apply f to selected column(s)
-  DF.transform(F, i=1, j=2);
-  DF.transform(F, i, j, k);
-\end{verbatim}
-Basic statistical operations on columns are provided.
-\findex{data\_file.dot}
-\findex{data\_file.avg}
-\findex{data\_file.var}
-\findex{data\_file.covar}
-\findex{data\_file.regression}
-\begin{verbatim}
-  DF.dot(i,j);        // dot product of columns i, j
-  DF.avg(i);          // mean of column i
-  DF.var(i);          // population variance
-  DF.covar(i,j);      // covariance
-  DF.regression(i,j); // plot regression line
-\end{verbatim}
-A \code{data\_file} is scatter plotted using syntax as described above.
-% The output is cropped automatically to the bounding box.
-\findex{data\_file.plot}
-\begin{verbatim}
-  DF.plot(STYLE, [i1], [i2], [i3], [F]);
-  DF.plot(STYLE, F, [i1], [i2], [i3]);
-\end{verbatim}
-Histograms and bar charts are described below.
-
-A \code{data\_file} can be written to a disk file as raw data, or in
-specified format. Below, \code{fmt} denotes a \code{string}-valued
-formatting function of two variables and \filename{myfile} is the
-name of the disk file to be written.
-\findex{data\_file.precision}
-\findex{data\_file.write}
-\begin{verbatim}
-  DF.precision(4);    // set to 4 significant figures
-  DF.write("myfile"); // write as tab-separated columns
-  DF.write("myfile", fmt, [i1], [i2]); // apply fmt to cols
-\end{verbatim}
-A column can be extracted as a \code{C++}~\code{vector} for use by
-another function.
-\findex{data\_file.column}
-\begin{verbatim}
-  DF.column(i);    // i-th column
-  DF.column(f, i); // i-th column, transformed by f
-\end{verbatim}
-
-
-\subsubsection*{Data Containers}
-
-\ePiX\ provides a \code{data\_mask} class for culling data from a file
-according to the values in a specified column, and a \code{data\_bins}
-class for sorting data by value.
-
-A \code{data\_mask} consists of an interval of numbers and a
-``filter'' function. The (closed, open, or half-open) interval is
-given as a string in standard mathematical notation, or by its
-endpoints (for a closed interval).  The filter is a
-\code{double}-valued function of \code{double}, by default the
-identity, \teximath{f(x)=x}.
-\findex{data\_mask}
-\begin{verbatim}
-  data_mask dm("[a, b]", [f]);
-  data_mask dm(a, b, [f]);
-\end{verbatim}
-A \code{data\_mask} ``passes'' inputs~\teximath{x} if~\teximath{f(x)}
-lies in the interval. The member function \code{reverse()} inverts
-this logical test.
-
-The \code{data\_file} class has \code{prune} functions to cull
-rows for which a specified column's entry satisfies a
-\code{data\_mask}'s criterion.
-\findex{data\_mask.prune}
-\begin{verbatim}
-  DF.prune(dm, i);   // remove row if i-th column entry fails
-  DF.prune(a, b, i); // remove row if i-th column outside [a,b]
-\end{verbatim}
-
-A \code{data\_bins} object models an interval divided at specified
-locations into ``bins'', not necessarily of equal length. Numerical
-data is read in and the number of points in each bin counted. The
-lifetime of a \code{data\_bins} object has two stages. First, ``cuts''
-(endpoints of subintervals) are added. Then, once data is read, the
-cuts are ``locked'' and cannot subsequently be changed.
-\findex{data\_bins}
-\findex{data\_bins.cut}
-\findex{data\_bins.read}
-\begin{verbatim}
-  // [xmin, xmax] divided into n equal intervals, 1 by default
-  data_bins db(xmin, xmax, [n]);
-  db.cut(x);  // add a cut at x (if x is in bounds)
-  db.read(vector<double>); // read data, lock bins
-\end{verbatim}
-
-\index{Histograms}
-\index{Bar Charts}
-A \code{data\_bins} object can be plotted as a histogram (rectangles'
-\emph{area} is proportional to the bin population), bar chart
-(rectangles' \emph{height} is proportional to the bin population), or
-spline interpolation of a bar chart.
-\findex{data\_bins.histogram}
-\findex{data\_bins.bar\_chart}
-\findex{data\_bins.plot}
-\begin{verbatim}
-  db.histogram(c=1);  // c = vertical scale factor
-  db.bar_chart(c=1);
-  db.plot(c=1);
-\end{verbatim}
-By default (\code{c=1}), the height of a bar chart rectangle is the
-fraction of the total population contained in the bin; thus, the
-height is always between 0~and 1. For a histogram, the height of a
-rectangle is the fraction of the population per horizontal unit in the
-bin; thus, the total area over an interval~\teximath{[a,b]} does not
-depend on how~\teximath{[a,b]} has been subdivided. The sample files
-\filename{dataplot.xp}~and \filename{histogram.xp} illustrate use.
-
-Statistical convention dictates cuts be chosen distinctly from data
-values; that is, values should all fall strictly within a bin, not at
-a boundary point. With large, unknown data sets, this convention may
-be difficult to uphold. \ePiX\ attempts to handle anomalous data
-intelligently, by keeping counts of values ``out-of-range'' or
-``on-cut''.
-
-In detail, if \teximath{x<a} or \teximath{x>b} is a data value, it is
-counted as out-of-range and does not contribute to the histogram
-population. If \teximath{x=a} or \teximath{x=b}, the value counts as
-both out-of-range and on-cut but is added to the population of the
-lowest or highest bin, respectively. Any other cut appearing as a data
-input is flagged as on-cut, and increments the population of each
-adjacent bin by one-half. When a histogram or bar chart is written,
-\ePiX\ prints a warning message summarizing the number of anomalous
-data seen.
-
-
-\subsubsection*{Error Bars}
-\index{Error bars}
-
-Simple horizontal and vertical error bars are provided.  The final
-(optional) argument is the true height or width (respectively) in pt.
-\findex{h\_error\_bar}
-\findex{v\_error\_bar}
-\begin{verbatim}
-  h_error_bar(P location, double error, <mark type>, ht=6);
-  v_error_bar(P location, double error, <mark type>, wd=6);
-\end{verbatim}
-
-To create more complex elements, such as asymmetric bars, whisker
-plots, labeled error bars, and the like, write a custom function using
-true-size drawing, see page~\pageref{truesize}. For example, a
-fillable, labeled, asymmetric, vertical rectangular error bar can be
-implemented (entirely in \ePiX) like this:
-\begin{verbatim}
-  void error_bar(P loc, double lo, double hi, P offset,
-                 std::string text, align, double wd=6)
-  {
-    const double width(pt_to_screen(0.5*wd)); // converts to 3pt
-    rect(loc - P(width, lo), loc + P(width, hi));
-    line(loc - P(width,  0), loc + P(width,  0));
-    label(loc + P(width, 0), offset, text, align);
-  }
-\end{verbatim}
-For stylistic uniformity, functions such as this should be put into a
-library and used systematically. Section~\ref{section:extensions}
-outlines the process of writing, compiling, and using a custom
-library.
-\index{Plotting!data|)}
-\index{Data plotting|)}
-
-
-\subsection{Legends}
-\index{Legends}
-
-A \code{legend} systematically labels different parts of a plot by
-associating visual ``keys'' with explanatory text. This tends to be
-most useful for plots containing several distinct but conceptually
-related graphs requiring contrast. 
-
-Visually, a \code{legend} is represented as an aligned list of rows,
-each containing a box (the key), a gap (the label skip), and some
-text.  These rows are printed in a (usually large) masked label. By
-default, keys are \code{12pt}~squares bordered in black, the label
-skip is~\code{6pt}, the background is white, and the border is plain
-black. These attributes are controlled (simultaneously for all items)
-with member functions.  Parameters of type \code{double} represent
-lengths in~\code{pt}.
-\findex{legend}
-\findex{legend.backing}
-\findex{legend.border}
-\findex{legend.item\_border}
-\findex{legend.label\_skip}
-\findex{legend.key\_size}
-\begin{verbatim}
-  legend L;
-  L.backing(color);          // set background
-  L.border(color, [double]); // set border color [and width]
-  L.border(double);          // border width
-
-  L.item_border(color, [double]);
-  L.item_border(double);     // same, for item borders
-
-  L.label_skip(double);
-  L.key_size(double);
-\end{verbatim}
-
-
-\subsubsection*{Legend Keys}
-
-There are three types of legend key, representing filled regions,
-paths, and markers. Fill and path keys get their visual attributes
-from the current drawing state. A mark key must be told the marker
-type. Each is created by specifying the item text.
-\findex{legend.fill\_item}
-\findex{legend.path\_item}
-\findex{legend.mark\_item}
-\begin{verbatim}
-  L.fill_item(text);
-  L.path_item(text);
-  L.mark_item(<mark type>, text);
-\end{verbatim}
-Keys in the printed legend appear in the same order they are created
-in the input file.
-
-
-\subsubsection*{Creating a Legend}
-
-Normally, a \code{legend} is defined near the start of a file, and an
-item is added at the point in the file where the corresponding object
-or plot is drawn, so that the item receives the correct attributes. A
-\code{legend} is placed into the figure with the \code{draw}
-function. The arguments have the same meaning as for ordinary
-\code{label}s.
-\findex{legend.draw}
-\begin{verbatim}
-  L.draw(P location, P offset, align);
-\end{verbatim}
-All three arguments are mandatory.  ``Global'' \code{legend} settings
-(border, backing, etc.) may be changed anywhere between the
-\code{legend}'s creation and \code{draw} function. The sample file
-\filename{legend.xp} revisits the example on
-page~\pageref{taylor_poly}, including a trig-labeled axis and a
-legend. The file \filename{shadeplot.xp} contains filled keys, and
-\filename{dataplot.xp} contains a \code{legend} with items of mixed
-type.
-
-
-\section{More About \CXX}
-\index{Cplusplus@\CXX|(emph}
-
-A textbook or similarly detailed reference is essential for serious
-study of~\code{C} or~\CXX. \emph{The \code{C} Programming Language},
-second edition, by Kernighan~and Ritchie~\cite{KnR}, is an excellent,
-manageable resource for the basics of procedural
-programming. \emph{C++ Primer Plus}, by Stephen Prata~\cite{Prata},
-clearly lays out the extensive details of~\CXX.  Marshall Cline's
-\emph{\CXX\ FAQ Lite}~\cite{Cline} engagingly discusses common points
-of confusion and furnishes tips on good design and programming.
-
-\CXX\ is a powerful, complex language whose syntax is similar to that
-of~\C, or to the scripting languages of Maple~and Mathematica. An
-\ePiX\ input file is source code for a \CXX~program that writes a
-\LaTeX\ picture as output.  \ePiX\ may be viewed as an extension
-to~\CXX; in the same way that \LaTeX\ furnishes a high-level interface
-to~\TeX, \ePiX\ provides a high-level bridge between the computational
-power of~\CXX\ and the \LaTeX\ \code{picture} environment.
-
-\index{Function}
-\index{Conditional statement}
-Like all high-level programming languages, \CXX\ provides variables,
-functions, and control structures. Variables hold pieces of data such
-as numerical values and geometric locations, while functions operate
-on data. A control structure, such as a loop or conditional statement,
-affects the program's course according to the program's current state.
-A source file is composed primarily of ``statements'', which perform
-actions ranging from defining variables and functions to setting
-figure attributes, performing calculations, and writing objects to the
-output file.
-
-\subsection{Names and Types}
-
-\index{Variable!names|(}
-Names of variables and functions may consist (only) of letters,
-digits, and the underscore character. The first character of a name
-must not be a digit, and the language standard reserves names starting
-with underscore for library authors. Names are case-sensitive, but
-it's usually a bad idea to use a single name capitalized and
-uncapitalized in a single file. Numerous capitalization conventions
-are used informally; this document uses uncapitalized words separated
-by underscores for variables and functions, and occasionally uses all
-capitals for constants. As with names of \LaTeX\ macros, primary
-considerations are clarity (of meaning), readability, and consistency.
-\index{Variable!names|)}
-
-\index{Variable!type of}
-Every variable in \CXX\ has a ``type'',
-such as integer (\code{int}), double-precision floating point
-(\code{double}), or Boolean (\code{bool}, true~or false).  \ePiX\ 
-provides additional types, the most common of which is~\code{P}, for
-point. The construct \code{P(x,y,z)} creates~\teximath{(x,y,z)}, while
-\code{P(x,y)} gives~\teximath{(x,y,0)}, which is effectively the
-pair~\teximath{(x,y)}. A variable is defined by giving its type, its
-name, and an initializing expression.
-
-\index{Variable!pointer}
-\index{Pointer}
-In~\code{C} and~\CXX, a \emph{pointer} variable holds the memory
-address of another variable. Pointers are useful for manipulating
-(possibly large) data structures through ``handles'' of fixed small
-size. \CXX\ also provides \emph{references}, which bind an additional
-name to an existing object and allow the object to be manipulated
-through this alias. The statements
-\begin{verbatim}
-  double  x=1;   // ordinary variable definition
-  double& rx=x;  // bind a reference, signified by &
-\end{verbatim}
-define a variable~\code{x} having the value~1, and bind a reference
-variable~\code{rx} to it. As long as~\code{rx} exists, it refers
-to~\code{x}. If the value of~\code{x} changes, the value of~\code{rx}
-does as well. Conversely, the value of~\code{x} can be altered by
-assigning to~\code{rx}. However,~\code{rx} is the size of a pointer,
-regardless of the size of~\code{x}, so~\code{rx} can be passed
-efficiently in a function call.
-\texicomment
-Some applications are discussed on page~\pageref{references}.
-\texicommentend
-
-
-\subsection{Functions}
-
-\index{Function|(}
-In a programming language, the term ``function'' refers to a block of
-code that is executable by name.  A \CXX\ function takes a list of
-``arguments'', and has a ``return value''.  This information, together
-with the function's name, must be provided when a function is defined.
-A function may not be defined inside another function. However, a
-function may call other functions (including itself) as part of its
-execution:
-\begin{verbatim}
-  int factorial(unsigned int n)
-  {
-    if (n == 0) return 1;
-    else return n*factorial(n-1);
-  }
-\end{verbatim}
-
-\index{Function!returning \code{void}}
-The special type~\code{void} represents a ``null type''. A function
-that performs an action but does not return a value has return type
-\code{void}. A function that takes no arguments may be viewed as
-taking a single \code{void} argument.
-
-Every \CXX\ program has a special function~\code{main()}, which is
-called by the operating system when the program is run. The arguments
-of~\code{main()} are command-line arguments, and the return type is an
-integer that signals success or failure. User-specified functions must
-be defined before the call to \code{main()} or in a
-separately-compiled file.
-
-Functions in~\CXX\ may be as simple as an algebraic formula or as
-complex as an arbitrary algorithm. Greatest common divisors, finite
-sums, numerical derivatives and integrals, solutions of differential
-equations, recursively generated fractal curves, and curves of best
-fit are a few applications in \ePiX. Several sample files contain
-user-level algorithms, which do not require knowledge of \ePiX's
-internal data structures. The source file \filename{functions.cc}
-contains simple functions defined by algorithms, and
-\filename{functions.h} illustrates the use of \CXX\ templates. Other
-source files, such as \filename{plots.cc}, may be consulted for
-Simpson's rule, Euler's method, and the like.
-
-
-\subsection{Mathematical Functions}
-
-\index{Function!mathematical|(}
-\CXX~knows several familiar mathematical functions by name:
-\begin{verbatim}
-  sqrt   exp   log   log10   ceil   floor   fabs
-\end{verbatim}
-(\code{fabs} is the absolute value for a floating-point argument.)
-\ePiX\ provides trig and inverse trig functions sensitive to angular
-mode:
-\index{Angular mode}
-\findex{Cos}
-\findex{Sin}
-\findex{Tan}
-\findex{Sec}
-\findex{Csc}
-\findex{Cot}
-\findex{Acos}
-\findex{Asin}
-\findex{Atan}
-\begin{verbatim}
-  Cos       Sin       Tan
-  Sec       Csc       Cot
-  Acos      Asin      Atan
-\end{verbatim}
-The inverse functions are principle branches.
-
-The function \code{pow(x,y)} returns~\teximath{x^y} when
-\teximath{x>0}, and \code{atan2(y,x)} (N.B. argument order) returns
-\teximath{\mathrm{Arg}(x+iy)\in(-\pi,\pi]}, the principle branch of
-arg.  \CXX~knows many constants to 20~decimal places, such as
-\code{M\_PI}, \code{M\_PI\_2}, and \code{M\_E} for~\teximath{\pi},
-\teximath{\pi/2}, and~\teximath{e} respectively.  \ePiX\ defines a few
-additional functions:
-\findex{sgn}
-\findex{zero}
-\findex{sinx}
-\findex{cb}
-\begin{verbatim}
-  sgn   zero   sinx   cb
-\end{verbatim}
-\texicomment
-\begin{center}
-  \input{sgn.eepic}\qquad
-  \input{sinx.eepic}\qquad
-  \input{cb.eepic}
-\end{center}
-\medskip
-\texicommentend
-\code{sgn} is the signum function; \code{zero} is the constant
-function; \code{sinx} is the function \teximath{x\mapsto \sin(x)/x}
-with the discontinuity removed; \code{cb} (for ``Charlie Brown'') is
-the period-2 extension of the absolute value function
-on~\teximath{[-1,1]}.
-
-The GNU \CXX\ library defines other functions, including inverse
-hyperbolic functions (\code{acosh}, etc.), \code{log}~and \code{exp}
-with base~2, 10, or arbitrary~\teximath{b} (\code{log2}, etc.), the
-error and gamma functions (\code{erf}~and \code{tgamma} [sic],
-respectively), and Bessel functions of first and second kind:
-\code{j0}, \code{j1}, \code{y0}, etc. Use, e.g., \code{jn(5,~)} to get
-higher indices.  The GNU \C~library reference manual~\cite{GNUC}
-describes these and other functions in detail.
-
-Functions may be used in subsequent definitions, and functions of two
-(or more) variables are defined in direct analogy to functions of one
-variable:
-\begin{verbatim}
-double f(double t) { return t*t*log(t*t); } // t^2 \ln(t^2)
-double g(double s, double t) { return exp(2*s)*Sin(t); }
-\end{verbatim}
-\index{Function!mathematical|)}
-
-
-\subsection{Basics of Classes}
-
-\index{Classes|(}
-Unlike~\code{C}, \CXX\ supports ``object-oriented programming''. In a
-nutshell, a \emph{class} is an abstraction in computer code of some
-concept, such as a point, a sphere, a mapping that can be plotted, or
-a camera. Classes allow a programmer to separate an object's
-\emph{interface} (the set of meaningful operations) from its
-\emph{implementation} (the data structures and algorithms that realize
-the interface). 
-
-\index{Function!class member}
-A class implementation consists of \emph{members} (named data
-elements) and \emph{member functions} (functions that belong to the
-class and have free access to members).  \CXX\ classes enforce access
-permissions on their members, protecting data from being manipulated
-except as promised by the interface.
-
-An ideal interface looks like a black box: It hides the implementation
-completely.  In order to cooperate, two classes need only know each
-other's interfaces. This separation of form and function modularizes a
-program, and facilitates debugging, code reuse, and overall
-maintainability, particularly in large programs. 
-
-In simple programming, classes may be treated like built-in types.
-Each class object has its own member functions, whose call syntax
-differs from standard function calls:
-\begin{verbatim}
-  Circle C1(P(1,0), 1.5); // circle of given center and radius
-  C1.draw();              // member function Circle::draw();
-\end{verbatim}
-Naturally, this call draws the circle~\code{C1}. Generally, a member
-function call consists of a class object's name, a period, and the
-name of the member function. Arguments, if any, go in the parentheses
-after the member function name, just as in a regular function call.
-
-A few short paragraphs cannot do more than scratch the surface of
-classes and object-oriented programming. For more details, please
-consult a book, such as Prata~\cite{Prata} or Stroustrup~\cite{S}, or
-Cline's on-line FAQ~\cite{Cline}.
-\index{Classes|)}
-
-
-\subsection{References and Function Arguments}
-
-\index{Function!call syntax}
-\index{Variable!reference}
-\label{references}
-\code{C}~and \CXX\ are ``call by value'' languages. Variables are not
-passed to a function; instead a copy of the value is made, and the
-function operates only on the copy. Though this feature causes
-occasional inconvenience, it prevents an object from being altered
-unexpectedly by a function call in a different part of the program.
-Calling by value helps localize the logic of a program, and
-circumvents easy-to-write but extremely hard-to-find bugs.
-
-In \CXX, a function may accept reference arguments. Passing an object
-by reference grants the calling function access to the object itself,
-not to a copy. There are two common applications: The object is a
-large data structure for which copying is ``expensive'', or the
-function \emph{needs} to modify its arguments (e.g., a function
-\code{swap(x,y)} that exchanges the values of \code{x}~and
-\code{y}). 
-
-For the first situation, \CXX\ provides the \code{const} keyword,
-which ensures the function does not modify its arguments, but accepts
-a reference merely for efficiency. Any attempt to modify a
-\code{const} argument will be caught by the compiler. Most \ePiX\
-commands accept \code{const} reference arguments.
-
-The ability to pass function arguments by reference is sometimes
-touted as a feature in \CXX\ texts. However, the technique circumvents
-the data encapsulation of calling by value, and should be avoided
-unless absolutely necessary. If a function merely ``updates'' the
-value of a variable, probably the variable should be of class type,
-and the update should be performed by a member function.
-
-A function declaration must indicate that its arguments are
-references. The declarations below have the indicated idiomatic
-meanings.
-\begin{verbatim}
-  class matrix;
-  double det(matrix); // call by value, perhaps inefficient
-  matrix& transpose(matrix&); // probably changes its argument
-  double trace(const matrix&); // does not change its argument
-\end{verbatim}
-Unlike pointer arguments, reference arguments impose no syntactic
-burden on the user. If~\code{A} is a~\code{matrix}, then
-\code{transpose(A);} and \code{trace(A);} will compile. You need not
-declare explicit reference variables and pass those to the function.
-
-
-\subsection{Overloading}
-
-\index{Function!overloaded}
-\CXX\ provides ``overloading'': Multiple functions can be given the
-same name, so long as the number and/or type of their arguments
-differ. (It is \emph{not} enough for the return types alone to differ.
-The compiler must be able to select a function from its calling
-syntax.)  To the user, the appearance is that a single function
-intelligently handles multiple argument lists. Naturally, overloaded
-names should refer to functions that are conceptually related.
-\index{Function|)}
-
-
-\subsection{Scope}
-
-\index{Variable!local}
-A \CXX\ statement ends with a semicolon. A collection of statements
-enclosed by curly braces is a ``code block'', and may be viewed as a
-single logical statement. Curly braces determine a ``scope'', inside
-which variable names may be re-used without ambiguity.  Function
-bodies are code blocks, as are the alternatives associated to control
-statements.  A variable defined between curly braces is said to be
-\emph{local} to the scope in which it is defined; its value cannot
-be used out of scope.  Variables should be declared in the smallest
-scope possible.
-
-The compiler is not picky about spaces, tabs, and newlines, so an
-input file should be formatted to make local scopes visually
-apparent. \code{emacs} automatically indents code to reflect scope,
-though the default behavior does not please all users.  As with
-variable naming, clarity and consistency are paramount.
-
-
-\subsection{Headers and Pre-Processing}
-
-A \CXX\ source file is compiled in multiple stages that occur
-transparently to the user. The first step, pre-processing, involves
-simple text replacement for file inclusion, macro expansion and
-conditional compilation. Next, the source is compiled and assembled:
-Human-readable language instructions are parsed, then represented in
-assembly language. Finally, the object files are linked: Function
-calls are resolved to hard-coded file offsets, possibly involving
-external library files, and the program instructions are packaged into
-an executable binary that the operating system can run.
-
-Pre-processing is used much less in~\CXX\ than in~\code{C}; the
-language itself supports safer and more featureful alternatives to
-macros, such as \code{const} variables and inline functions. File
-inclusion and conditional compilation are the chief uses of the
-pre-processor. Lines of the form 
-\begin{verbatim}
-  #include <iostream>
-  #include "epix.h"
-\end{verbatim}
-cause the contents of a \emph{header file} to be read into the source
-file. A header file contains variable and function
-\emph{declarations}, statements that specify types and names but do
-not define actual data. Declarations tell the compiler just enough
-to resolve expressions and function calls without knowing specific
-values or function definitions. 
-
-\index{Input file!conditional compilation}
-Conditional compilation is similar to conditional \LaTeX\ code. For
-example, a file might produce either color or monochrome output as
-follows:
-\begin{verbatim}
-#ifdef COLOR
-  ...  // code for generating color figure
-#endif /* COLOR */
-#ifndef COLOR
-  ...  // monochrome code
-#endif /* undef COLOR */
-\end{verbatim}
-The ``compiler symbol'' \code{COLOR} is an ordinary \CXX\ name. To
-control compilation, either put a \code{\#define COLOR} line in the
-file, or (better) supply the flag on the command line: \\
-\verb+  epix -DCOLOR <file.xp>+ \\
-Every \code{\#ifdef} must have a matching \code{\#endif}. Commenting
-the \code{\#endif} is a good habit; in a realistic file, the start and
-end of a conditional block may be separated by more than one screen.
-
-
-\subsection{Comparison with \LaTeX\ Syntax}
-
-As a programming language, \CXX\ provides certain features common to
-all languages (such as \LaTeX, MetaPost, Perl, Lisp\ldots) and adheres
-to rules of grammar. Salient differences between \LaTeX\ and \CXX\ 
-include:
-
-\begin{enumerate}
-\item Every \CXX\ statement and function call must end with a
-  semicolon. An omitted semicolon may result in a cryptic error
-  message from the compiler. Pre-processor directives, which start
-  with a~\code{\#}, do not end with a semicolon.
-
-\item Backslash is an escape character in \CXX:
-  \index{Labels}
-\begin{verbatim}
-  // Put label $y=\sin x$ at (2,1)
-  // Note single  ^ backslash in output
-  label(P(2,1), P(0,0), "$y=\\sin x$"); 
-  //       Double backslash ^^ in source
-\end{verbatim}
-  
-\item Variable and function names may contain letters (including
-  underscore) and digits \emph{only}, are case sensitive, and must
-  begin with a letter.
-
-\item Variables in \CXX\ must have a declared \emph{type}, such as
-  \code{int} (integer) or \code{double} (double-precision floating
-  point). If a variable has global scope and its value does not
-  change, the definition should probably come in the preamble or at
-  the beginning of \code{main}. Local variables should be defined in
-  the smallest possible scope. Unlike~\C, \CXX\ allows variables to be
-  defined where they first appear.
-  
-\item \CXX~requires explicit use of~\code{*} to denote multiplication;
-  juxtaposition is not enough. \CXX~does not support the use of
-  \verb+^+ for exponentiation, e.g., \verb+t^2+ is invalid. Instead,
-  use \code{t*t}~or \code{pow(t,2)}.
-
-\item \CXX\ has single- and multi-line comments. Everything between a
-  double slash and the next newline is ignored, while the strings
-  \verb+/*+~and \verb+*/+ delimit multi-line comments. A single-line
-  comment may appear within a multi-line comment, but the compiler
-  does not nest multi-line comments.
-  \index{Input file!comment in}
-
-\end{enumerate}
-
-Between them, \C~and \CXX~have about 100~reserved keywords which
-cannot be used as function or variable names.
-\index{Cplusplus@\CXX|)}
-
-
-\section{Attribute Quick Reference}
-\label{section:quickref}
-
-In the body of an input file, the ``drawing state'' determines the
-figure's appearance. Attributes are declarations, set by commands that
-accept arguments of the stated type.
-
-A \code{len} argument is a double-quoted string containing a number
-and a two-letter \LaTeX\ length unit, such as \code{"1.5pt"} or
-\code{"6cm"}. A \code{color} argument is a named primary
-(\code{Red()}, \code{Cyan()}, \code{White()}, etc.), a \code{Color}
-specified by densities (\code{RGB(...)}, \code{CMYK(...)}, etc.), or a
-\code{Color} object. Using \code{Neutral()} as a \code{Color} argument
-generally turns off the corresponding attribute.
-
-\begin{itemize}
-
-\item Angular mode: \code{radians()}, \code{degrees()}, or
-  \code{revolutions()}.
-
-  The angular mode affects all trigonometric operations, including
-  camera rotations, the drawing of arcs and ellipses, polar plotting,
-  label angle, and the trig functions themselves. Angle-sensitive trig
-  functions are capitalized, e.g., \code{Cos}, \code{Tan}.
-
-\item Fill style: \code{fill(color)}, \code{fill(bool)},
-  \code{nofill()}.
-
-\item Path style:
-
-  \begin{itemize}
-
-  \item Width: \code{plain()}, \code{bold()}, \code{bbold()},
-    \code{pen(len)}.
-
-  \item Line style: \code{line\_style(string)}. The argument is a
-    WYSIWYG sequence of dashes, spaces, and periods.
-    \code{dash\_size(double)} and \code{dot\_sep(double)} set the
-    (approximate) length in~\code{pt} of the pattern.  The commands
-    \code{solid()}, \code{dashed()}, \code{dotted()} define
-    ``standard'' defaults for brevity.
-
-  \item Path color:
-    Paths can be drawn using \emph{two} pens, one atop the other. When
-    the ``base'' pen is white (or the background color) and wider than
-    the ``line'' pen, a path masks parts of the figure it crosses. A
-    3-D effect may be obtained by making the base pen a darker shade
-    than the ``line'' pen.
-
-    \code{pen(color,[len])}, \code{base(color,[len])}
-
-    Standard widths: \code{plain(color)}, \code{bold(color)},
-    \code{bbold(color)}
-
-  \end{itemize}
-
-\item Text attributes:
-
-  \begin{itemize}
-
-  \item Color: \code{label\_color(color)}
-
-  \item Mask: \code{label\_mask(color)}, \code{label\_pad(len)}
-
-  \item Border: \code{label\_border(color, [len])},
-    \code{label\_border(len)}. The command \code{no\_label\_border()}
-    turns off label borders.
-
-  \item Font size: \code{font\_size(LaTeX size)}, no argument means
-    \code{normalsize}.
-
-  \item Font face: \code{font\_face(LaTeX font)}, two-letter font
-    selection string, default is \code{rm}.
-
-  \item Rotation: \code{label\_angle(double)}
-
-  \end{itemize}
-
-\end{itemize}
-
-Do not confuse \code{Color} constructors with the similarly-named
-(deprecated) lowercase attribute-setting commands, \code{rgb(r,g,b)},
-\code{cmyk(c,m,y,k)}, \code{red(d)}, etc. These commands affect text,
-paths, and filled regions. For example, the single command
-\code{red()} has the same effect as the three commands
-\code{pen(Red())}, \code{fill(Red())}, and \code{label\_color(Red())}.
-
-
-\texinfochapter{4}{Advanced Topics}
-\label{chapter:adv}
-
-This chapter covers \emph{ad hoc} tricks and open-ended techniques
-that require relatively more programming sophistication. You will
-almost surely need an external \CXX\ reference if you do not speak the
-language.
-
-
-\section{Hidden Object Removal}
-\label{section:hidden}
-
-\index{Hidden object removal|(}
-\ePiX\ writes the output file in the same order that objects appear in
-the input. The order is significant because PostScript builds a figure
-in layers: Objects are drawn over objects that come earlier in the
-file. Shaded polygons can be used to obtain surprisingly effective
-hidden object removal in surface meshes. This section describes the
-data structures defined in the source files \code{surface.*}.
-
-\index{Camera}
-The basic idea is to create a shaded polygon class that knows its
-approximate distance to the camera. For computational simplicity, a
-mesh ``facet'' is treated as a quadrilateral, located at the
-arithmetic mean of its vertices. A facet's boundary is created from a
-map and a domain by tracing a fine mesh rectangle counterclockwise.
-
-To draw a parametrized surface, facets are stored in a \CXX\ vector,
-sorted in decreasing order of distance to the camera, and printed to
-the output file. If filling is active, the gray density of a facet
-depends on the cosine of the angle between the normal vector and the
-vector from the camera to the element.
-
-This simple algorithm works surprisingly well when mesh elements
-intersect at most along complete edges. To incorporate line-like
-elements (e.g., coordinate axes, wire-mesh plots) with shaded
-surfaces, the best technique is often to order high-level scene
-elements manually, breaking up shaded surfaces (for example, with
-domain resizing or clipping) as necessary. The sample file
-\filename{saddle.xp} illustrates possible techniques.
-
-Shaded surfaces can be decorated with a bit of hackery. For example,
-the \code{facet::draw} function in \filename{facet.cc} can be
-modified easily to draw line elements, tangents, or normal vectors
-along with the facet itself. The sample file
-\filename{decorate.xp} contains a couple of ideas. (The
-decorations are activated by compiler flags; please consult the file
-itself for information on compiling.)
-\index{Hidden object removal|)}
-
-
-\section{Extensions}
-\label{section:extensions}
-
-Thanks to a suggestion of Andrew Sterian, \ePiX\ is extensible. User
-extensions span a spectrum, from header files that require only basic
-knowledge of~\CXX\ to separately compiled libraries that add
-substantial new features.  The structure of the source code is
-outlined in Section~\ref{section:programmers}.
-
-
-\subsection{Header Files}
-
-A \CXX~header file conventionally has suffix~\filename{.h}, as in
-\filename{myheader.h}. To use this custom header, put a line
-\code{\#include "myheader.h"} in your source file.
-
-User definitions can be easily and robustly implemented with ``inline
-functions''. Inline functions are superficially similar to macros, but
-are far more safe and featureful (since they are handled by the
-compiler rather than by the pre-processor).  Examples are
-\begin{verbatim}
-  inline void Bold() { pen(1.6); }
-  inline void purple() { rgb(0.5, 0, 0.7); }
-  inline void draw_square(double s) { rect(P(-s,-s),P(s,s)); }
-  inline double cube(double x) { return pow(x,3); // x^3 }
-\end{verbatim}
-The keyword \code{void} signifies a function that does not return a
-value, or (when used as an implicit parameter) a function that does
-not accept arguments. Inline function definitions are syntactically
-identical to ordinary function definitions, but \emph{must} occur in a
-header file or in the source file where they are used. The examples
-above might be used in an input file as follows:
-\begin{verbatim}
-  Bold();  
-  draw_square(cube(1.25));
-\end{verbatim}
-
-
-\subsection{Compiling}
-
-The next few sections outline the creation of a ``static library'' on
-GNU/Linux, and explain how to incorporate custom features at runtime.
-The extensively-commented sample files \filename{std\_F.cc}~and
-\filename{std\_F.h} illustrate the techniques described below, and may
-be used for guidance and experimentation.
-
-A small library is usually written as a \emph{header} file, which
-contains class and function declarations (also called ``prototypes''),
-and a \emph{source} file, which contains the actual
-code. Conventionally (under *nix), these files have extension
-\filename{.h}~and \filename{.cc} respectively. Header and source files
-may ``include'' other header files, to incorporate additional
-functionality.
-\begin{verbatim}
-/* my_code.h */
-#ifndef MY_CODE
-#define MY_CODE
-#include <cmath>   // standard library math header
-#include "epix.h"  // ePiX header
-using ePiX::P;
-
-namespace Mine {   // to avoid name conflicts
-  // functions for special relativity
-  double lorentz_norm(const P&);
-  bool   spacelike(const P&);
-} // end of namespace
-#endif /* MY_CODE */
-\end{verbatim}
-This file exhibits two ``safety features''. The three \code{MY\_CODE}
-lines prevent the file from being included multiple times. In a file
-of this size, inclusion protection is overkill, but as your code base
-grows and the number of header files increases, this protection is
-essential. Second, the header introduces a ``Mine'' namespace. Inside
-this namespace, two functions are declared as prototypes, giving the
-function's return type, name, and argument type(s). A header file
-should be commented fairly liberally, so that a year or two from now
-you'll be able to decipher the file's contents.  For a longer file,
-version and contact information, an overall comment describing the
-file's features, and license information are appropriate.
-
-Next, the corresponding source file; definitions are also placed into
-the namespace, and must match their prototypes from the header file
-exactly.
-\begin{verbatim}
-/* my_code.cc */
-#include "my_code.h"
-using namespace ePiX;
-
-namespace Mine {
-  double lorentz_norm(const P& arg)
-  {
-    double x(arg.x1()), y(arg.x2()), z(arg.x3()); // extract coords
-    return (y-x)*(y+x) + z*z; // -x^2 + y^2 + z^2
-  }
-  bool spacelike(const P& arg)
-  {
-    return (lorentz_norm(arg) > 0); // true if inequality is
-  }
-} // end of namespace
-\end{verbatim}
-Copies of these files are included with the source code so you can
-experiment with them. Next, the source file must be ``compiled'',
-``archived'', and ``indexed''. In the commands below, the percent sign
-is the prompt.
-\begin{verbatim}
-% g++ -c my_code.cc
-% ar -ru libcustom.a my_code.o
-% ranlib libcustom.a
-\end{verbatim}
-Please see your system documentation for details on command options
-and what each step does. For linking (below), the name of the library
-file must begin ``lib'' and have the extension~\filename{.a}. Once these
-steps are successfully completed, put the library \filename{libcustom.a}
-and header file \filename{my\_code.h} in your project directory. You're
-ready to use the code in an \ePiX\ figure.
-
-
-\subsection{Runtime Linking}
-
-The script~\epix\ allows input files to be linked with external
-libraries at run time, when the input file is compiled into a
-temporary executable.
-
-\epix\ recognizes command line options and passes them verbatim to the
-compiler. The most commonly used options are those of the form
-\begin{verbatim}
-   -I<include>     -L<libdir>     -l<lib>
-\end{verbatim}
-For example, to link \filename{figure.xp} against
-\filename{mylibs/libcustom.a}, run the command
-\begin{verbatim}
-   epix -Lmylibs -lcustom figure
-\end{verbatim}
-The options \code{-I. -L.} tell the compiler to look in the current
-directory for header and library files.  Compiler options may appear
-in any order, but must come before the name of the input file(s).
-
-Compiler options may be placed in the configuration file
-\filename{\$HOME/.epixrc}, with syntax as above. A line in the config
-file that contains a pound sign~(\code{\#}) is a comment, no matter
-where in the line the~\code{\#} appears. If any non-comment line
-fails to start with a dash, the rest of the file is silently
-discarded.  Command-line options are read before the config file.
-
-
-\subsection{Using Multiple Versions}
-
-The script \filename{epix}~links by default against the \code{C}~math
-library \code{libm.a}~and the \ePiX\ library \code{libepix.a}.  The
-command option \code{--no-defaults} clears the header and include
-paths and removes \code{libepix.a} from the link list. The script may
-therefore be used with multiple versions of \ePiX, a potentially
-useful feature if you regularly need to compile old source files, or
-simply prefer the syntax of an older version.
-
-To install and use (say) Version~1.0.0, build the package according to
-its \filename{INSTALL} instructions, but \emph{do not use the makefile
-  to install}. Instead, manually install the header and library only,
-using their version number:
-\begin{verbatim}
-# install -m 644 epix.h /usr/local/include/epix-1.0.h
-# install -m 644 libepix.a /usr/local/lib/libepix-1.0.a
-\end{verbatim}
-A non-system directory may be used instead of \filename{/usr/local}.
-To use the old version, a source file must \code{include} the
-appropriate header file (which is identified by its version number).
-To compile, issue a command such as
-\begin{verbatim}
-epix --no-defaults -I/usr/local -L/usr/local -lepix-1.0 file.xp
-\end{verbatim}
-
-
-\section{Programmer's Guide}
-\label{section:programmers}
-
-This section briefly surveys \ePiX's implementation, and is intended
-for (potential) programmers. The source code is divided into modules
-with small, well-defined responsibilities, but the user interface is
-mostly compatible with the syntax of Version~1.0. These constraints
-demanded a degree of implementation hiding. For example, the
-user-visible classes defined in \filename{Color.h}, \filename{path.h},
-and~\filename{screen.h} contain only a pointer to the implementation
-class, and style data is hidden behind global commands.
-
-Functionally, the code consists of the user interface; implementation
-class\-es comprising drawing attributes, spatial objects, screens and
-representations of their elements, and output; and miscellaneous
-utility functions. The headers in each group, and their contents, are
-described in Section~\ref{section:interface}.
-
-The user interface headers are assembled into a single file,
-\filename{epix.h}, and installed in \filename{/usr/local/include} by
-default. In normal use, the shell scripts read only the user interface
-header.  The individual headers, including the components of
-\filename{epix.h}, are installed in
-\filename{/usr/local/include/epix}. These are provided for authors of
-external libraries, who may need access to implementation details.
-
-
-\subsection{External Packages}
-
-\ePiX\ harnesses the computational power of~\CXX\ to the typographical
-capabilities of \LaTeX. Consequently, \ePiX\ should be viewed in part
-as a framework for expressing numerical data visually.
-
-In the course of your work, you may develop specialized code filling a
-gap in \ePiX's functionality. If your code seems likely to be of
-interest to other users, please consider bundling it as an external
-package and notifying the \ePiX\ community so your work can be linked
-from the project pages and distributed to interested users.
-
-There are no formal requirements for external packages, but in the
-interest of uniformity contributed code should follow the GNU Coding
-Standards~\cite{GNUCoding}. At a minimum, an external package should
-build with the standard \code{./configure; make; make install}
-commands, and the \code{configure} script should accept an option
-\code{--with-epix} for the user to specify a non-default \ePiX\
-install directory.
-
-If an external package builds a static library, it should provide a
-single header containing all the package's entry points, and enclose
-its interface in a namespace. Entry points should not collide with
-\ePiX\ functions. Naming the package ``\filename{epix-<...>}'' is a
-good idea, but not essential. For example, a package providing textual
-nodes and diagram layout might be named \filename{epix-nodes}.  Input
-files would use the package with the lines
-\begin{verbatim}
-  #include "epix-nodes.h"
-  using namespace ePiX-nodes;
-\end{verbatim}
-and be compiled with
-\begin{verbatim}
-  epix -lepix-nodes <file>
-\end{verbatim}
-
-The user and internal interfaces of \ePiX-1.2 are not likely to
-change. Still, it's prudent to rely only on the user interface in
-contributed code whenever possible. Doing so also simplifies your work
-as an author; your library can simply \code{include} the user header
-file, and deal only with high-level objects and drawing attributes.
-
-
-\subsection{User Interface}
-\label{section:interface}
-
-These files (in order) comprise the global header \filename{epix.h}.
-
-\Header{enums.h} Marker, alignment, Riemann integral, and vector field
-types.
-
-\Header{length.h} Physical lengths, conceptually a number and
-two-letter \LaTeX\ length unit.
-
-\Header{interval.h} Closed, open, and half-open interval ranges for
-data culling.
-
-\Header{triples.h} The \code{P} class.
-
-\Header{functions.h} Angle-sensitive trig functions, miscellaneous
-utility functions, the \code{Deriv}~and \code{Integral} classes.
-
-\Header{pairs.h} Screen locations and displacements, with complex
-arithmetic operations.
-
-\Header{Color.h} The Color class interface, named
-primaries and constructors.
-
-\Header{state.h} Angle mode; clipping and cropping; label styles;
-filling; arrow head style; dot and tick sizes, dash length; line
-style; line and base pen attributes; color-setting commands.
-
-\Header{frame.h} Orthonormal bases.
-
-\Header{domain.h} Coordinate boxes for function plotting.
-
-\Header{camera.h} The camera.
-
-\Header{screen.h} The screen class.
-
-\Header{picture.h} Dimension-setting, offset, layout, decoration,
-verbatim text, and output format commands.
-
-\Header{markers.h} Point markers, axis labels, and coordinate axes.
-
-\Header{axis.h} Coordinate axes and labels in various styles.
-
-\Header{legend.h} Plot legends.
-
-\Header{path.h} The path class.
-
-\Header{curves.h} Polygons, arrows, ellipses, arcs, splines,
-coordinate grids, and recursive fractal curves.
-
-\Header{circle.h} The \code{Circle} shape object class.
-
-\Header{plane.h} The \code{Plane} shape object class.
-
-\Header{segment.h} The \code{Segment} shape object class.
-
-\Header{sphere.h} The \code{Sphere} shape object class.
-
-\Header{intersections.h} Shape object intersection operators.
-
-\Header{plots.h} Plotting commands.
-
-\Header{surface.h} Shaded surface plots.
-
-\Header{data\_mask.h} Helper class for data pruning.
-
-\Header{data\_file.h} Class for storing and representing data.
-
-\Header{data\_bins.h} Class for sorting and counting data.
-
-\Header{geometry.h} Latitudes and longitudes; spherical plotting,
-arcs, polygons, and polyhedra; hyperbolic arcs.
-
-
-\subsection{Implementation Classes}
-
-\Header{Color\_Base.h} The Color implementation interface.
-
-\Header{Color\_CMY.h} The CMY color model.
-
-\Header{Color\_CMYK.h} The CMYK color model.
-
-\Header{Color\_Gray.h} The Gray color model.
-
-\Header{Color\_Neutral.h} Each color class has a ``Neutral'' member
-that converts colors to that model by filtering. This file defines the
-unique ``model-less'' Neutral color for which filtering performs no
-action.
-
-\Header{Color\_RGB.h} The RGB color model.
-
-\Header{Color\_Sep.h} Classes for CMYK separation.
-
-\Header{active\_screen.h} Simple manipulator for the active screen.
-
-\Header{picture\_data.h} Picture implementation: two \code{screen}s
-(representing the \code{canvas}~and the output page), true dimensions
-and offsets, pointer to output format, list of colors, and lists of
-verbatim text to write before and after printing the \code{picture}
-environment in the output file. For simplicity, the \code{screen}s and
-dimensions are public; encapsulation from the user results from
-``hiding'' this header.
-
-
-\subsubsection*{Style Attributes}
-
-Declaration-style attributes are maintained with functions returning
-static references: \code{the\_angle\_style()},
-\code{the\_arrowhead\_style()}, \code{the\_label\_style()},
-\code{the\_mark\_size()}, \code{the\_paint\_style()}, and
-\code{the\_path\_style()}. Each function is declared in the
-analogously-named header.
-
-\Header{angle\_units.h} Angular modes: \code{radians},
-\code{revolutions}, and \code{degrees}.
-
-\Header{arrow\_style.h} Arrow head style data: width, ratio, and
-inset.
-
-\Header{label\_style.h} Text object style: Label and mask colors,
-padding, border color and width, alignment, font size, font face, and
-angle.
-
-\Header{marker\_style.h} Dot and tick sizes.
-
-\Header{paint\_style.h} Line and base pens, fill color.
-
-\Header{path\_style.h} Solid, dashed, dotted lines.
-
-\Header{pen\_data.h} The pen class.
-
-
-\subsubsection*{Objects}
-
-\Header{arrow\_data.h} Arrow representation.
-
-\Header{facet.h} Shaded surface elements.
-
-\Header{label\_data.h} Text (label and marker) objects.
-
-\Header{legend\_item.h} Items for \code{legend}s.
-
-\Header{path\_data.h} Path implementation.
-
-\Header{spline.h} The natural spline class.
-
-\Header{spline\_data.h} Templates for quadratic and cubic splines.
-
-
-\subsubsection*{Screen Representation}
-
-Elements in a \code{screen} are represented polymorphically as
-``\code{tile}s'', of which there are six types: \code{glyph} (textual
-elements), \code{pen\_arrow} (arrows), \code{pen\_fill} (filled
-regions), \code{pen\_line} (path-like elements), \code{verbatim}
-(raw text), and \code{legend\_tile} (legends).
-
-Border and background shape are dictated by the \code{screen\_mask}
-class. The cropping algorithm assumes the contour of a screen mask is
-convex.
-
-\Header{affine.h} Affine maps.
-
-\Header{cropping.h} Screen mask cropping.
-
-\Header{glyph.h} Markers and labels.
-
-\Header{legend\_tile.h} Screen representation of a \code{legend}.
-
-\Header{mask\_diamond.h} Screen diamond mask.
-
-\Header{mask\_ellipse.h} Screen elliptical mask.
-
-\Header{mask\_rectangle.h} Screen rectangular mask.
-
-\Header{pen\_arrow.h} Arrows.
-
-\Header{pen\_fill.h} Filled regions.
-
-\Header{pen\_line.h} Paths.
-
-\Header{screen\_data.h} Screen implementation class.
-
-\Header{screen\_mask.h} Screen mask interface.
-
-\Header{tile.h} Screen element interface.
-
-\Header{verbatim.h} Text in output stream.
-
-
-\subsubsection*{Output}
-
-Output is divided into a couple of high-level operations and several
-``atomic'' low-level operations.  To create a new output
-format, one need only implement the \code{format} interface for the
-desired file type. Paths and filled regions may be implemented however
-the output type dictates.
-
-\Header{eepic.h} eepic macros.
-
-\Header{fmt\_template.h} ``skeleton'' header for new output formats.
-
-\Header{format.h} The output interface.
-
-\Header{pst.h} PSTricks macros.
-
-\Header{tikz.h} tikz macros.
-
-
-\subsubsection*{Utilities}
-
-\Header{Color\_Utils.h} Functions for setting color channel densities.
-
-\Header{clipping.h} The clip box.
-
-\Header{constants.h} Global constants: Line widths; dot, tick, and
-dash sizes; arrowhead parameters; miscellaneous numerical constants
-and internal parameters.
-
-\Header{crop\_algorithms.h} Path and loop clipping templates.
-
-\Header{deriv.h} Finite difference template.
-
-\Header{edge\_data.h} Path element representation template.
-
-\Header{errors.h} Warning and error messages.
-
-\Header{frac.h} Rational numbers and operators.
-
-\Header{halfspace.h} Halfspace cutting.
-
-\Header{hatching.h} Filling regions in eepic.
-
-\Header{lens.h} Camera lenses.
-
-\Header{map.h} Wrappers for templated plotting.
-
-\Header{plot\_algorithms.h} Plotting templates.
-
-\Header{screen\_crop.h} Crop paths and loops.
-
-\Header{utils.h} Truncation, date and time, line breaking.
-
-
-\appendix
-\texinfoappendix{A}{Software Freedom}
-\index{Free software|(} 
-
-Academics in general, and mathematicians in particular, depend on free
-exchange of information. We prove theorems or establish experimental
-results, write up formal accounts, place preprints on public file
-servers, and submit papers to peer-reviewed journals. If accepted, the
-results---data, techniques, methods of reasoning, citations, and
-conclusions---are published in print and become part of the public
-record, governed by copyright law. Libraries purchase journal
-subscriptions, but researchers and scholars may use ideas from the
-literature merely by giving appropriate citations in their own
-work. ``Theft'' arises from false claims of authorship.
-
-Carried over to software, the academic process would guarantee rights
-similar to those provided by the GNU General Public License (GPL):
-
-\begin{itemize}
-
-\item (GPL~0) To run a program for any purpose.
-
-\item (GPL~1) To study how the program works, and adapt it to your
-  needs.
-
-\item (GPL~2) To redistribute copies of the program.
-
-\item (GPL~3) To improve the program, and release improvements to the
-  public, so that the whole community benefits.
-
-\end{itemize}
-
-In reality, attitudes toward software differ markedly. Most academics
-work on a proprietary platform, use proprietary software for research
-and teaching, and share information with colleagues and students in
-proprietary, even obfuscated, data formats.  Contrary to the academic
-ethic, proprietary software licenses restrict access to information:
-preventing users from learning how a program works internally
-(``reverse engineering''), limiting the number of users who may run a
-piece of software, and forbidding users from running (or sometimes
-even installing) a purchased copy on multiple machines.
-
-Restrictions on use aside, if one cannot examine a program's source
-code, one cannot fully trust the output, any more than one can trust
-(for purposes of scientific publication) results of a commercial
-testing lab.
-
-\texicomment
-\noindent$\phantom{.}$\hfil\vbox{\hrule width 4in}\hfil
-\texicommentend
-
-Consider a hypothetical future world in which scholarly results are
-disseminated like software. Instead of subscriptions, journals 
-sell licenses granting readership to a specified number of
-individuals. Photocopying an article for a class or research seminar
-constitutes ``piracy'', though if the institution has purchased a
-sufficiently large site license the teacher or speaker may bring the
-physical volume to class and project the pages onto a screen.
-
-Of course, reading an article is scarcely enlightening. Mathematics
-papers contain only the statements of theorems. Merely opening the
-journal binds the reader to a lengthy legal agreement, stating that
-theorems be used only for specific purposes and threatening serious
-legal consequences for attempting to discover the author's proofs.
-
-The actions of a single student, employee, or faculty member can
-expose an institution to a costly ``journal audit'' from the
-Mathematical Society of America (MSA), with the institution
-responsible for legal costs if the audit reveals license violations
-anywhere in the organization.
-
-Mathematicians who long for the Old Days when papers contained
-proofs and were shared freely are dismissed as idealistic cranks
-or labeled anti-business communists. Common knowledge asserts the
-obvious superiority of proprietary journals, and the necessity of
-licenses for keeping mathematicians gainfully employed.
-
-\texicomment
-\noindent$\phantom{.}$\hfil\vbox{\hrule width 4in}\hfil
-\texicommentend
-
-Back in our world, some vendors have attempted to placate opponents of
-closed source with ``shared source'' licenses, under which one may
-sign a non-disclosure agreement and subsequently examine source
-code. In the future world analogy, a shared source agreement would
-allow journal licensees to sign an NDA, then see the proofs of
-theorems. Readers could thereby correct errors in proofs (benefitting
-the publisher by improving the reliability of the journal), but would
-be legally forbidden from using the ideas elsewhere (denying benefit
-to other mathematicians).
-
-Legally and conceptually codifying software as a commodity ignores a
-fundamental reality: Like an idea or recipe, software can be copied
-without loss of the original. The perception of ``theft'' by copying
-arises from an artificial belief that software has an owner who must
-be monetarily compensated each time a person acquires a copy.  The
-nature of software does not enforce the ``sale'' model in the way
-services and physical commodities do. It therefore seems
-philosophically inappropriate to treat software as a commodity, and
-perilous to conform the legal system to the enforcement of such a
-model.
-
-At its best, software enhances our productivity and
-creativity. Sharing software, like sharing ideas, benefits a larger
-number of people without detriment to existing users.  I hope this
-modest program is, in conjunction with the much larger efforts of
-others (especially Donald Knuth, Richard Stallman, and the many people
-who have contributed to the authorship of \LaTeX\ and its packages),
-useful to you in your mathematical work.
-
-Please visit the Free Software Foundation, at
-\URL{www.fsf.org}, to learn more about free software and how
-you can contribute to its development and adoption.
-\index{Free software|)}
-
-\texinfoappendix{B}{Acknowledgments}
-
-\ePiX\ is built on the work of many people (unfortunately, most of
-whom I am unaware). The following people have contributed, sometimes
-unknowingly but always generously: 
-
-\paragraph{Infrastructure} Donald Knuth, Conrad Kwok, Leslie Lamport,
-Tim Morgan, Piet van~Oostrum, Sunil Podar, Richard Stallman, Till
-Tantau, Herbert Voss, Timothy van~Zandt
-
-\paragraph{Enhancements} Jay Belanger, Robin Blume-Kohout, Julian
-Gilbey, Marcus Hanwell, Yvon Henel, Svend Daug{\aa}rd Pedersen, Andrew
-Sterian
-
-\paragraph{Porting and packaging} Julian Gilbey (Debian); Tsuguru Kato
-(FreeBSD); Markus Dittrich, Danny van Dyk, Christian Faulhammer,
-Olivier Fisette, Chris Gianelloni, Michael Hanselmann, Marcus Hanwell,
-David Holm, Peter Johanson, Patrick Kursawe, Tobias Scherbaum, Markus
-Ullmann (Gentoo); Guido Gonzato (RPM); Rene Rebe (T2)
-
-\paragraph{Debugging, advice, and other assistance} Jay Belanger,
-Felipe Paulo Guazzi Bergo, Karl Berry, Robin Blume-Kohout, Patrick
-Cousot, Stephen Gibson, Julian Gilbey, Dov Grobgeld, Bob Grover, Jim
-Hefferon, Jacques L'helgoual, Yvon Henel, Hartmut Henkel, Herng-Jeng
-Jou, Walter Kehowski, Kevin McCormick, Ross Moore, Thorsten Riess,
-Alan Sill, Neel Smith, Michael Somos, Andrew Sterian, Ryszard Tanas,
-Kai Trukenmueller, Torbjorn Vik, Wenguang Wang, Gabe Weaver, Mariusz
-Wodzicki
-
-\texicomment
-\begin{thebibliography}{9}
-%
-\bibitem{Cline} Marshall Cline, \emph{\CXX\ FAQ Lite}, \\
-  \URL{http://www.parashift.com/c++-faq-lite/}
-%
-\bibitem{xcolor} Uwe Kern, \emph{Extending \LaTeX's color facilities:
-  the \code{xcolor} package}, white paper, Jan.~21, 2007
-%
-\bibitem{KnR} Brian Kernighan and Dennis Ritchie, \emph{The \code{C}
-    Programming Language}, Second Ed., Prentice-Hall Software Series,
-    1988
-%
-\bibitem{GNUC} Sandra Loosemore, Richard M. Stallman, et.\ al.,
-    \emph{The GNU \code{C}~Library Reference Manual}, GNU Press,
-    2004
-%
-\bibitem{Prata} Stephen Prata, \emph{\CXX\ Primer Plus}, Sams, 2002
-%
-\bibitem{R} Keith Reckdahl, \emph{Using Imported Graphics in
-  \LaTeX2e}, Version~2.0, white paper, Dec.~15, 1997
-%
-\bibitem{GNUCoding} Richard M. Stallman, et.\ al., \emph{The GNU
-  Coding Standards}, \\
-  \URL{http://www.gnu.org/prep/standards/}
-%
-\bibitem{S} Bjarne Stroustrup, \emph{The \CXX\ Programming Language},
-  Special Ed., Addison-Wesley, 1997
-%
-\bibitem{Z} Timothy van~Zandt, \emph{PSTricks: PostScript Macros for
-  Generic \TeX}, Version~0.93a, white paper, Mar.~12, 1993
-%
-\end{thebibliography}
-
-\clearpage
-
-\printindex
-
-\end{document}
-
-\texicommentend
diff --git a/graphics/epix/doc/marker.eepic b/graphics/epix/doc/marker.eepic
deleted file mode 100644
index 5ee5923a3b..0000000000
--- a/graphics/epix/doc/marker.eepic
+++ /dev/null
@@ -1,39 +0,0 @@
-%% Generated from marker.xp on Tue Jan  4 15:32:18 EST 2005 by
-%% ePiX-1.0.3
-%%
-%%   Cartesian bounding box: [0,5] x [0,1]
-%%   Actual size: 3.75in x 1in
-%%   Figure offset: right by 0in, up by 0in
-%%
-\setlength{\unitlength}{0.25in}
-\begin{picture}(15,4)(-0,-0)
-%% ---
-\put(0.664176,3.77861){{\tt{CIRC}}}
-\whiten\put(0,4){\makebox(0,0)[c]{{\circle{0.166044}}}}
-\put(4.41418,3.77861){{\tt{SPOT}}}
-\put(3.75,4){\makebox(0,0)[c]{{\circle*{0.249066}}}}
-\put(8.16418,3.77861){{\tt{RING}}}
-\put(7.5,4){\makebox(0,0)[c]{{\circle{0.249066}}}}
-\put(11.9142,3.77861){{\tt{DOT}}}
-\put(11.25,4){\makebox(0,0)[c]{{\circle*{0.166044}}}}
-\put(15.6642,3.77861){{\tt{DDOT}}}
-\put(15,4){\makebox(0,0)[c]{{\circle*{0.110696}}}}
-\put(0.664176,1.77861){{\tt{PLUS}}}
-\put(0,2){\makebox(0,0)[c]{+}}
-\put(4.41418,1.77861){{\tt{OPLUS}}}
-\put(3.75,2){\makebox(0,0)[c]{$\oplus$}}
-\put(8.16418,1.77861){{\tt{TIMES}}}
-\put(7.5,2){\makebox(0,0)[c]{$\times$}}
-\put(11.9142,1.77861){{\tt{OTIMES}}}
-\put(11.25,2){\makebox(0,0)[c]{$\otimes$}}
-\put(0.664176,-0.221392){{\tt{DIAMOND}}}
-\put(0,0){\makebox(0,0)[c]{$\diamond$}}
-\put(4.41418,-0.221392){{\tt{UP}}}
-\put(3.75,0){\makebox(0,0)[c]{$\bigtriangleup$}}
-\put(8.16418,-0.221392){{\tt{DOWN}}}
-\put(7.5,0){\makebox(0,0)[c]{$\bigtriangledown$}}
-\put(11.9142,-0.221392){{\tt{BOX}}}
-\put(11.25,0){\makebox(0,0)[c]{\rule{3pt}{3pt}}}
-\put(15.6642,-0.221392){{\tt{BBOX}}}
-\put(15,0){\makebox(0,0)[c]{\rule{2pt}{2pt}}}
-\end{picture}
diff --git a/graphics/epix/doc/marker.xp b/graphics/epix/doc/marker.xp
deleted file mode 100644
index f1569c1476..0000000000
--- a/graphics/epix/doc/marker.xp
+++ /dev/null
@@ -1,68 +0,0 @@
-/* -*-ePiX-*- */
-/* marker.c -- types of marker */
-#include "epix.h"
-using namespace ePiX;
-
-int main()
-{
-  unitlength("0.25in");
-  picture(P(15,4));
-  bounding_box(P(0,0), P(5,1));
-  //  offset(P(-1,0));
-
-  begin();
-
-  double x1 = x_min;
-  double x2 = x_min + x_size/4;
-  double x3 = x_min + 2*x_size/4;
-  double x4 = x_min + 3*x_size/4;
-  double x5 = x_max;
-
-  double y1 = y_min;
-  double y2 = y_min + y_size/2;
-  double y3 = y_max;
-
-  label(P(x1,y3), P(12,-4), "{\\tt{CIRC}}");
-  circ(P(x1,y3));
-
-  label(P(x2,y3), P(12,-4), "{\\tt{SPOT}}");
-  spot(P(x2,y3));
-
-  label(P(x3,y3), P(12,-4), "{\\tt{RING}}");
-  ring(P(x3,y3));
-
-  label(P(x4,y3), P(12,-4), "{\\tt{DOT}}");
-  dot(P(x4,y3));
-
-  label(P(x5,y3), P(12,-4), "{\\tt{DDOT}}");
-  ddot(P(x5,y3));
-
-  label(P(x1,y2), P(12,-4), "{\\tt{PLUS}}");
-  marker(P(x1,y2), PLUS);
-
-  label(P(x2,y2), P(12,-4), "{\\tt{OPLUS}}");
-  marker(P(x2,y2), OPLUS);
-
-  label(P(x3,y2), P(12,-4), "{\\tt{TIMES}}");
-  marker(P(x3,y2), TIMES);
-
-  label(P(x4,y2), P(12,-4), "{\\tt{OTIMES}}");
-  marker(P(x4,y2), OTIMES);
-
-  label(P(x1,y1), P(12,-4), "{\\tt{DIAMOND}}");
-  marker(P(x1,y1), DIAMOND);
-
-  label(P(x2,y1), P(12,-4), "{\\tt{UP}}");
-  marker(P(x2,y1),UP);
-
-  label(P(x3,y1), P(12,-4), "{\\tt{DOWN}}");
-  marker(P(x3,y1), DOWN);
-
-  label(P(x4,y1), P(12,-4), "{\\tt{BOX}}");
-  marker(P(x4,y1), BOX);
-
-  label(P(x5,y1), P(12,-4), "{\\tt{BBOX}}");
-  marker(P(x5,y1), BBOX);
-
-  end();
-}
diff --git a/graphics/epix/doc/my_code.cc b/graphics/epix/doc/my_code.cc
deleted file mode 100644
index b7365fa63c..0000000000
--- a/graphics/epix/doc/my_code.cc
+++ /dev/null
@@ -1,15 +0,0 @@
-/* my_code.cc */
-#include "my_code.h"
-using namespace ePiX;
-
-namespace Mine {
-  double lorentz_norm(P arg)
-  {
-    double x=arg.x1(), y=arg.x2(), z=arg.x3(); // extract coords
-    return -x*x + y*y + z*z;
-  }
-  bool spacelike(P arg)
-  {
-    return (lorentz_norm(arg) > 0);
-  }
-} // end of namespace
diff --git a/graphics/epix/doc/my_code.h b/graphics/epix/doc/my_code.h
deleted file mode 100644
index 229e80dbf4..0000000000
--- a/graphics/epix/doc/my_code.h
+++ /dev/null
@@ -1,10 +0,0 @@
-/* my_code.h */
-#include <cmath>   // standard library math header
-#include "epix.h"  // ePiX header
-using ePiX::P;
-
-namespace Mine {   // to avoid name conflicts
-  // functions for special relativity
-  double lorentz_norm(P);
-  bool   spacelike(P);
-} // end of namespace
diff --git a/graphics/epix/doc/objects.eepic b/graphics/epix/doc/objects.eepic
deleted file mode 100644
index 9b17600895..0000000000
--- a/graphics/epix/doc/objects.eepic
+++ /dev/null
@@ -1,412 +0,0 @@
-%% Generated from objects.xp on Thu Jun 28 14:55:45 EDT 2007 by
-%% ePiX-1.1.6
-%%
-%%   Cartesian bounding box: [0,5] x [0,2]
-%%   Actual size: 3.75 x 1.5in
-%%   Figure offset: left by 0in, down by 0in
-%%
-\xdefinecolor{rgb_000000}{rgb}{0,0,0}
-\xdefinecolor{rgb_e5e5e5}{rgb}{0.898039,0.898039,0.898039}
-\xdefinecolor{rgb_ffffff}{rgb}{1,1,1}
-\setlength{\unitlength}{1in}
-\begin{picture}(3.75,1.5)(-0,-0)
-\path(0.675,0.75)(2.325,0.75)(1.5,1.125)(0.675,0.75)
-%%
-\path(3.1875,1.125)(3.18724,1.13481)(3.18647,1.1446)
-  (3.18519,1.15433)(3.1834,1.16398)(3.18111,1.17353)(3.17832,1.18294)
-  (3.17505,1.19219)(3.17129,1.20126)(3.16706,1.21012)
-  (3.16238,1.21875)(3.15725,1.22712)(3.15169,1.23521)(3.14571,1.243)
-  (3.13934,1.25046)(3.13258,1.25758)(3.12546,1.26434)(3.118,1.27071)
-  (3.11021,1.27669)(3.10212,1.28225)(3.09375,1.28738)
-  (3.08512,1.29206)(3.07626,1.29629)(3.06719,1.30005)
-  (3.05794,1.30332)(3.04853,1.30611)(3.03898,1.3084)(3.02933,1.31019)
-  (3.0196,1.31147)(3.00981,1.31224)(3,1.3125)(2.99019,1.31224)
-  (2.9804,1.31147)(2.97067,1.31019)(2.96102,1.3084)(2.95147,1.30611)
-  (2.94206,1.30332)(2.93281,1.30005)(2.92374,1.29629)
-  (2.91488,1.29206)(2.90625,1.28738)(2.89788,1.28225)
-  (2.88979,1.27669)(2.882,1.27071)(2.87454,1.26434)(2.86742,1.25758)
-  (2.86066,1.25046)(2.85429,1.243)(2.84831,1.23521)(2.84275,1.22712)
-  (2.83762,1.21875)(2.83294,1.21012)(2.82871,1.20126)
-  (2.82495,1.19219)(2.82168,1.18294)(2.81889,1.17353)(2.8166,1.16398)
-  (2.81481,1.15433)(2.81353,1.1446)(2.81276,1.13481)(2.8125,1.125)
-  (2.81276,1.11519)(2.81353,1.1054)(2.81481,1.09567)(2.8166,1.08602)
-  (2.81889,1.07647)(2.82168,1.06706)(2.82495,1.05781)
-  (2.82871,1.04874)(2.83294,1.03988)(2.83762,1.03125)
-  (2.84275,1.02288)(2.84831,1.01479)(2.85429,1.007)(2.86066,0.999538)
-  (2.86742,0.992417)(2.87454,0.98566)(2.882,0.979285)
-  (2.88979,0.973309)(2.89788,0.967749)(2.90625,0.96262)
-  (2.91488,0.957936)(2.92374,0.95371)(2.93281,0.949954)
-  (2.94206,0.946677)(2.95147,0.943889)(2.96102,0.941597)
-  (2.97067,0.939808)(2.9804,0.938527)(2.99019,0.937757)(3,0.9375)
-  (3.00981,0.937757)(3.0196,0.938527)(3.02933,0.939808)
-  (3.03898,0.941597)(3.04853,0.943889)(3.05794,0.946677)
-  (3.06719,0.949954)(3.07626,0.95371)(3.08512,0.957936)
-  (3.09375,0.96262)(3.10212,0.967749)(3.11021,0.973309)
-  (3.118,0.979285)(3.12546,0.98566)(3.13258,0.992417)
-  (3.13934,0.999538)(3.14571,1.007)(3.15169,1.01479)(3.15725,1.02288)
-  (3.16238,1.03125)(3.16706,1.03988)(3.17129,1.04874)
-  (3.17505,1.05781)(3.17832,1.06706)(3.18111,1.07647)(3.1834,1.08602)
-  (3.18519,1.09567)(3.18647,1.1054)(3.18724,1.11519)(3.1875,1.125)
-%%
-\path(0.75,0)(2.25,0)(2.25,0.75)(0.75,0.75)(0.75,0)
-%%
-\color{rgb_e5e5e5}%
-\path(2.025,0.00550459)(1.725,0.00550459)
-\path(2.025,0.0110092)(1.725,0.0110092)
-\path(2.025,0.0165138)(1.725,0.0165138)
-\path(2.025,0.0220183)(1.725,0.0220183)
-\path(2.025,0.0275229)(1.725,0.0275229)
-\path(2.025,0.0330275)(1.725,0.0330275)
-\path(2.025,0.0385321)(1.725,0.0385321)
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diff --git a/graphics/epix/doc/objects.xp b/graphics/epix/doc/objects.xp
deleted file mode 100644
index d0828f0b94..0000000000
--- a/graphics/epix/doc/objects.xp
+++ /dev/null
@@ -1,33 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-int main()
-{
-  picture(P(0,0), P(5,2), "3.75 x 1.5in");
-
-  begin();
-
-  // roof
-  triangle(P(0.9, 1), P(3.1, 1), P(2, 1.5)); // vertices
-
-  // sun
-  circle(P(4,1.5), 0.25); // center and radius
-
-  // house
-  rect(P(1,0), P(3,1)); // opposite corners
-  // grid(P(1,0), P(3,1), 1, 10); // corners, numbers of subdivisions 
-
-  // door
-  fill(Black(0.1));
-  rect(P(2.3,0), P(2.7,0.8)); // corners
-
-  fill(White());
-  // window
-  rect(P(1.4,0.2), P(2, 0.6));
-  bold();
-  grid(P(1.4,0.2), P(2, 0.6), 2, 2);
-
-  line(P(xmin(),0), P(xmax(),0));
-  end();
-}
diff --git a/graphics/epix/doc/pathstyle.eepic b/graphics/epix/doc/pathstyle.eepic
deleted file mode 100644
index 531523bf45..0000000000
--- a/graphics/epix/doc/pathstyle.eepic
+++ /dev/null
@@ -1,225 +0,0 @@
-%% Generated from pathstyle.xp on Tue Jul 17 15:01:22 EDT 2007 by
-%% ePiX-1.1.8
-%%
-%%   Cartesian bounding box: [0,4] x [0,4]
-%%   Actual size: 4 x 1in
-%%   Figure offset: left by 0in, down by 0in
-%%
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-\put(2.98421,0){\makebox(0,0){\circle{0.0055348}}}
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diff --git a/graphics/epix/doc/pathstyle.xp b/graphics/epix/doc/pathstyle.xp
deleted file mode 100644
index 47fe65e5e1..0000000000
--- a/graphics/epix/doc/pathstyle.xp
+++ /dev/null
@@ -1,24 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-void dash_sample(double ht, std::string pattern)
-{
-  line_style(pattern);
-  line(P(0,ht), P(3,ht));
-  label(P(3, ht), P(4,0), "\\code{line\\_style(\""+pattern+"\")}", r);
-}
-
-int main() {
-  picture(P(0,0), P(4,4), "4x1in");
-
-  begin();
-
-  dash_sample(4, "-\\ \\ -");
-  dash_sample(3, "-\\ \\ \\ \\ -");
-  dash_sample(2, " .\\ ");
-  dash_sample(1, "-\\ .\\ -");
-  dash_sample(0, ".\\ - .");
-
-  end();
-}
diff --git a/graphics/epix/doc/plot_a.eepic b/graphics/epix/doc/plot_a.eepic
deleted file mode 100644
index bf0e6e787a..0000000000
--- a/graphics/epix/doc/plot_a.eepic
+++ /dev/null
@@ -1,95 +0,0 @@
-%% Generated from plot_a.xp on Tue Jul  3 00:20:34 EDT 2007 by
-%% ePiX-1.0.25
-%%
-%%   Cartesian bounding box: [-1,1] x [-1,1]
-%%   Actual size: 1.5in x 1.5in
-%%   Figure offset: right by 0in, up by 0in
-%%
-\setlength{\unitlength}{1in}
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-%% ---
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-\path(0.46836,0.168485)(0.742767,0.297412)(1.04539,0.445422)
-  (1.30251,0.545884)(1.45594,0.578419)(1.50104,0.577699)(1.46759,0.593248)
-  (1.38541,0.658506)(1.27061,0.785404)(1.12739,0.966366)(0.954829,1.17292)
-  (0.755083,1.35363)(0.541119,1.44293)(0.33859,1.39004)(0.176669,1.19323)
-  (0.0740632,0.905071)(0.0341447,0.601107)(0.0523099,0.345536)
-  (0.126363,0.178624)(0.261856,0.119648)(0.46836,0.168485)
-\end{picture}
diff --git a/graphics/epix/doc/plot_a.xp b/graphics/epix/doc/plot_a.xp
deleted file mode 100644
index 4304d501d3..0000000000
--- a/graphics/epix/doc/plot_a.xp
+++ /dev/null
@@ -1,27 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-P f(double u, double v)
-{
-  double x=u*Cos(v), y=u*Sin(v);
-  //  return P(x, y, 0.25*x*(x*x-3*y*y));
-  return P(x, y, x*y);
-}
-
-domain R(P(0,0), P(1,1), mesh(6, 20), mesh(6, 20));
-
-int main() 
-{
-  bounding_box(P(-1,-1),P(1,1));
-  unitlength("1in");
-  picture(1.5,1.5);
-
-  begin();
-  revolutions();
-
-  camera.at(P(3, 1, 3));
-
-  plot(f, R);
-
-  end();
-}
diff --git a/graphics/epix/doc/plot_b.eepic b/graphics/epix/doc/plot_b.eepic
deleted file mode 100644
index cf847bd346..0000000000
--- a/graphics/epix/doc/plot_b.eepic
+++ /dev/null
@@ -1,225 +0,0 @@
-%% Generated from plot_b.xp on Tue Jul  3 00:20:46 EDT 2007 by
-%% ePiX-1.0.25
-%%
-%%   Cartesian bounding box: [-1,1] x [-1,1]
-%%   Actual size: 1.5in x 1.5in
-%%   Figure offset: right by 0in, up by 0in
-%%
-\setlength{\unitlength}{1in}
-\begin{picture}(1.5,1.5)(-0,-0)
-%% ---
-\path(0.75,0.75)(0.729972,0.708648)(0.709403,0.666178)(0.688271,0.622545)
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-  (0.261856,0.119648)(0.322456,0.124628)(0.391288,0.141232)
-  (0.46836,0.168485)
-\path(0.46836,0.168485)
-\end{picture}
diff --git a/graphics/epix/doc/plot_b.xp b/graphics/epix/doc/plot_b.xp
deleted file mode 100644
index f7560071e9..0000000000
--- a/graphics/epix/doc/plot_b.xp
+++ /dev/null
@@ -1,27 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-P f(double u, double v)
-{
-  double x=u*Cos(v), y=u*Sin(v);
-  //  return P(x, y, 0.25*x*(x*x-3*y*y));
-  return P(x, y, x*y);
-}
-
-domain R(P(0,0), P(1,1), mesh(6, 20), mesh(12,60));
-
-int main() 
-{
-  bounding_box(P(-1,-1),P(1,1));
-  unitlength("1in");
-  picture(1.5,1.5);
-
-  begin();
-  revolutions();
-
-  camera.at(P(3, 1, 3));
-
-  plot(f, R);
-
-  end();
-}
diff --git a/graphics/epix/doc/plotting.eepic b/graphics/epix/doc/plotting.eepic
deleted file mode 100644
index ca0911610b..0000000000
--- a/graphics/epix/doc/plotting.eepic
+++ /dev/null
@@ -1,82 +0,0 @@
-%% Generated from plotting.xp on Thu Jun 28 15:36:18 EDT 2007 by
-%% ePiX-1.1.6
-%%
-%%   Cartesian bounding box: [-2,2] x [-1,1]
-%%   Actual size: 5 x 1in
-%%   Figure offset: left by 0in, down by 0in
-%%
-\xdefinecolor{rgb_000000}{rgb}{0,0,0}
-\xdefinecolor{rgb_ff0000}{rgb}{1,0,0}
-\setlength{\unitlength}{1in}
-\begin{picture}(5,1)(-0,-0)
-\path(0,0.5)(5,0.5)
-%%
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-\put(5,0.5){\makebox(0,0){$\rule{0.5pt}{4pt}$}}
-\path(2.5,0)(2.5,1)
-%%
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-  (4.70833,0.153043)(4.75,0.216827)(4.79167,0.283494)
-  (4.83333,0.345636)(4.875,0.398463)(4.91667,0.440367)
-  (4.95833,0.472875)(5,0.5)
-%%
-\end{picture}
diff --git a/graphics/epix/doc/plotting.xp b/graphics/epix/doc/plotting.xp
deleted file mode 100644
index ad310f7b02..0000000000
--- a/graphics/epix/doc/plotting.xp
+++ /dev/null
@@ -1,26 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-double f(double x)
-{
-  return 0.75*Sin(x) - 0.25*Sin(2*x);
-}
-
-int main()
-{
-  picture(P(-2,-1),P(2,1), "5x1in");
-
-  begin();
-
-  h_axis(16);
-  v_axis(4);
-
-  h_axis_labels(4, P(0,-4), b); // shift labels down 4pt, align below
-
-  revolutions(); // set angle units
-  red();
-  plot(f, xmin(), xmax(), 120); // use 120 intervals
-
-  end();
-}
diff --git a/graphics/epix/doc/plotting2.eepic b/graphics/epix/doc/plotting2.eepic
deleted file mode 100644
index 5f56a743ec..0000000000
--- a/graphics/epix/doc/plotting2.eepic
+++ /dev/null
@@ -1,1766 +0,0 @@
-%% Generated from plotting2.xp on Tue Sep 25 00:02:47 EDT 2007 by
-%% ePiX-1.2.0
-%% 
-%%   Cartesian bounding box: [-1,1] x [-1,1]
-%%   Actual size: 2 x 1in
-%%   Figure offset: left by 0in, down by 0in
-%% 
-%% usepackages pstricks
-%% 
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diff --git a/graphics/epix/doc/plotting2.xp b/graphics/epix/doc/plotting2.xp
deleted file mode 100644
index 2a0ed661e5..0000000000
--- a/graphics/epix/doc/plotting2.xp
+++ /dev/null
@@ -1,29 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-P f(double r, double th)
-{
-  return P(r*Cos(th), r*Sin(th), pow(r, 3)*Cos(3*th));
-}
-
-int main()
-{
-  picture(P(-1,-1),P(1,1), "2x1in");
-
-  begin();
-
-  domain R(P(0,0), P(1, 2*M_PI), mesh(8,40), mesh(8,80));
-
-  camera.at(3,1,2); // set the viewpoint
-
-  arrow(P(0,0,0), P(1.25,0,0));
-  arrow(P(0,0,0), P(0,1.25,0));
-
-  plain(Blue(1.2));
-  fill(Yellow()); // shade
-  surface(f, R);
-
-  pst_format();
-  end();
-}
diff --git a/graphics/epix/doc/plotting3.eepic b/graphics/epix/doc/plotting3.eepic
deleted file mode 100644
index d61bee76c4..0000000000
--- a/graphics/epix/doc/plotting3.eepic
+++ /dev/null
@@ -1,146 +0,0 @@
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diff --git a/graphics/epix/doc/plotting3.xp b/graphics/epix/doc/plotting3.xp
deleted file mode 100644
index e5d1088978..0000000000
--- a/graphics/epix/doc/plotting3.xp
+++ /dev/null
@@ -1,43 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-P sin_n(double x, double n)     // Taylor polynomial of sin x
-{
-  const int N((int) floor(n));  // convert y to an index bound
-  const double sqx(-pow(x, 2)); // store -x^2 for efficiency
-  double val(x), summand(x);    // places to store results of evaluation
-
-  // step through odd numbers from 1 to 2N+1
-  for (int i=1; i <= 2*N+1; i += 2)
-    {
-      summand *= (sqx/((i+1)*(i+2))); // (-1)^i x^{2i+1}/(2i+1)!
-      val += summand;
-    }
-
-  return P(x, val);
-}
-
-int main()
-{
-  picture(P(0,-1),P(6*M_PI, 1), "5x1in");
-
-  begin();
-
-  set_crop();
-  h_axis(4);
-  v_axis(1);
-
-  bold();
-  green();
-  plot(Sin, 0, xmax(), 120);
-
-  domain R(P(0,1), P(6*M_PI, 41), mesh(60, 40), mesh(120, 40));
-  for (int i=3; 0 <= i; --i)
-    {
-      rgb(0.25*i, 0, 1-0.25*i);
-      plot(sin_n, R.slice2(5*i+1));
-    }
-
-  end();
-}
diff --git a/graphics/epix/doc/scaling.eepic b/graphics/epix/doc/scaling.eepic
deleted file mode 100644
index 0b6231c4ee..0000000000
--- a/graphics/epix/doc/scaling.eepic
+++ /dev/null
@@ -1,56 +0,0 @@
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-%% ePiX-1.1.15
-%% 
-%%   Cartesian bounding box: [0,4] x [0,1]
-%%   Actual size: 4 x 0.75in
-%%   Figure offset: left by 0in, down by 0in
-%% 
-%% usepackages epic,eepic,xcolor
-%% 
-\xdefinecolor{rgb_000000}{rgb}{0,0,0}%
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-\path(2.6739,0.361163)(2.6739,0.388837)
-\path(2.66846,0.360175)(2.66846,0.389825)
-\path(2.66302,0.359186)(2.66302,0.390814)
-\path(2.65759,0.358198)(2.65759,0.391802)
-\path(2.65215,0.35721)(2.65215,0.39279)
-\path(2.64672,0.356221)(2.64672,0.393779)
-\path(2.64128,0.355233)(2.64128,0.394767)
-\path(2.63584,0.354244)(2.63584,0.395756)
-\path(2.63584,0.375)(2.63584,0.354244)(2.75,0.375)
-  (2.63584,0.395756)(2.63584,0.375)
-\put(0.027674,0.121424){\makebox(0,0)[bl]{\hbox{\color{rgb_000000}\scriptsize \hbox{\color{rgb_000000}\scriptsize $(x_\mathrm{min},y_\mathrm{min})$}}}}
-\put(0,0.09375){\makebox(0,0){\hbox{\color{rgb_000000}\scriptsize $\circle{0.0069185}\circle{0.013837}\circle{0.0207555}\circle{0.027674}$}}}
-\put(1.47233,0.722326){\makebox(0,0)[tr]{\hbox{\color{rgb_000000}\scriptsize \hbox{\color{rgb_000000}\scriptsize $(x_\mathrm{max},y_\mathrm{max})$}}}}
-\put(1.5,0.75){\makebox(0,0){\hbox{\color{rgb_000000}\scriptsize $\circle{0.0069185}\circle{0.013837}\circle{0.0207555}\circle{0.027674}$}}}
-\put(0.75,0.038402){\makebox(0,0)[t]{\hbox{\color{rgb_000000}\scriptsize \hbox{\color{rgb_000000}\scriptsize Canvas (virtual)}}}}
-\path(1.5,0.09375)(1.5,0.75)(0,0.75)(0,0.09375)(1.5,0.09375)
-\put(3.02767,0.121424){\makebox(0,0)[bl]{\hbox{\color{rgb_000000}\scriptsize \hbox{\color{rgb_000000}\scriptsize $(0,0)$}}}}
-\put(3,0.09375){\makebox(0,0){\hbox{\color{rgb_000000}\scriptsize $\circle{0.0069185}\circle{0.013837}\circle{0.0207555}\circle{0.027674}$}}}
-\put(3.97233,0.628576){\makebox(0,0)[tr]{\hbox{\color{rgb_000000}\scriptsize \hbox{\color{rgb_000000}\scriptsize $(h_\mathrm{size}, v_\mathrm{size})$}}}}
-\put(4,0.65625){\makebox(0,0){\hbox{\color{rgb_000000}\scriptsize $\circle{0.0069185}\circle{0.013837}\circle{0.0207555}\circle{0.027674}$}}}
-\put(3.5,0.038402){\makebox(0,0)[t]{\hbox{\color{rgb_000000}\scriptsize \hbox{\color{rgb_000000}\scriptsize Page (actual)}}}}
-\path(4,0.09375)(4,0.65625)(3,0.65625)(3,0.09375)(4,0.09375)
-\end{picture}%
diff --git a/graphics/epix/doc/scaling.xp b/graphics/epix/doc/scaling.xp
deleted file mode 100644
index 7d243caabc..0000000000
--- a/graphics/epix/doc/scaling.xp
+++ /dev/null
@@ -1,37 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-int main()
-{
-  picture(P(0,0), P(4,1), "4x0.75in");
-
-  begin();
-
-  font_size("scriptsize");
-
-  screen canv(P(0,0), P(1,1));
-  activate(canv);
-
-  border();
-  ddot(canv.bl(), P(2,2),   "$(x_\\mathrm{min},y_\\mathrm{min})$", tr);
-  ddot(canv.tr(), P(-2,-2), "$(x_\\mathrm{max},y_\\mathrm{max})$", bl);
-  label(canv.b(), P(0,-4), "Canvas (virtual)", b);
-  deactivate(canv);
-
-  screen pg(P(0,0), P(1,1));
-  activate(pg);
-
-  border();
-  ddot(pg.bl(), P(2,2),   "$(0,0)$", tr);
-  ddot(pg.tr(), P(-2,-2), "$(h_\\mathrm{size}, v_\\mathrm{size})$", bl);
-  label(pg.b(), P(0,-4), "Page (actual)", b);
-  deactivate(pg);
-
-  arrow(P(1.75, 0.5), P(2.75,0.5));
-
-  inset(canv, P(0,0.125), P(1.5, 1));
-  inset(pg, P(3,0.125), P(4,0.875));
-
-  end();
-}
diff --git a/graphics/epix/doc/sgn.eepic b/graphics/epix/doc/sgn.eepic
deleted file mode 100644
index 0aafc5d5af..0000000000
--- a/graphics/epix/doc/sgn.eepic
+++ /dev/null
@@ -1,30 +0,0 @@
-%% Generated from sgn.xp on Tue Jan  4 15:32:30 EST 2005 by
-%% ePiX-1.0.3
-%%
-%%   Cartesian bounding box: [-2,2] x [-1,1]
-%%   Actual size: 1.5in x 0.75in
-%%   Figure offset: right by 0in, up by 0in
-%%
-\setlength{\unitlength}{1in}
-\begin{picture}(1.5,0.75)(-0,-0)
-%% ---
-\path(0,0.375)(1.5,0.375)
-\put(0,0.375){\makebox(0,0)[c]{\rule{0.5pt}{4pt}}}
-\put(0.375,0.375){\makebox(0,0)[c]{\rule{0.5pt}{4pt}}}
-\put(0.75,0.375){\makebox(0,0)[c]{\rule{0.5pt}{4pt}}}
-\put(1.125,0.375){\makebox(0,0)[c]{\rule{0.5pt}{4pt}}}
-\put(1.5,0.375){\makebox(0,0)[c]{\rule{0.5pt}{4pt}}}
-%% ---
-\path(0.75,0)(0.75,0.75)
-\put(0.75,0){\makebox(0,0)[c]{\rule{4pt}{0.5pt}}}
-\put(0.75,0.75){\makebox(0,0)[c]{\rule{4pt}{0.5pt}}}
-%% ---
-\thicklines
-\path(0,0)(0.75,0)
-\path(1.5,0.75)(0.75,0.75)
-\thinlines
-\put(0.75,0.375){\makebox(0,0)[c]{{\circle*{0.041511}}}}
-\whiten\put(0.75,0){\makebox(0,0)[c]{{\circle{0.041511}}}}
-\whiten\put(0.75,0.75){\makebox(0,0)[c]{{\circle{0.041511}}}}
-\put(0.75,-0.055348){\makebox(0,0)[t]{\code{sgn}}}
-\end{picture}
diff --git a/graphics/epix/doc/sgn.xp b/graphics/epix/doc/sgn.xp
deleted file mode 100644
index 5296973ba4..0000000000
--- a/graphics/epix/doc/sgn.xp
+++ /dev/null
@@ -1,28 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-int main() 
-{
-  bounding_box(P(-2,-1),P(2,1));
-  unitlength("1in");
-  picture(1.5,0.75);
-
-  begin();
-
-  h_axis(4);
-  v_axis(1);
-
-  bold();
-  line(P(x_min,-1), P(0,-1));
-  line(P(x_max, 1), P(0, 1));
-
-  plain();
-  dot(P(0,0));
-  circ(P(0,-1));
-  circ(P(0,1));
-
-  label(P(0,y_min), P(0,-4), "\\code{sgn}", b);
-
-  end();
-}
diff --git a/graphics/epix/doc/sinx.eepic b/graphics/epix/doc/sinx.eepic
deleted file mode 100644
index c62bf19e00..0000000000
--- a/graphics/epix/doc/sinx.eepic
+++ /dev/null
@@ -1,40 +0,0 @@
-%% Generated from sinx.xp on Tue Jan  4 15:32:32 EST 2005 by
-%% ePiX-1.0.3
-%%
-%%   Cartesian bounding box: [-2,2] x [-1,1]
-%%   Actual size: 1.5in x 0.75in
-%%   Figure offset: right by 0in, up by 0in
-%%
-\setlength{\unitlength}{1in}
-\begin{picture}(1.5,0.75)(-0,-0)
-%% ---
-\path(0,0.375)(1.5,0.375)
-\put(0,0.375){\makebox(0,0)[c]{\rule{0.5pt}{4pt}}}
-\put(0.375,0.375){\makebox(0,0)[c]{\rule{0.5pt}{4pt}}}
-\put(0.75,0.375){\makebox(0,0)[c]{\rule{0.5pt}{4pt}}}
-\put(1.125,0.375){\makebox(0,0)[c]{\rule{0.5pt}{4pt}}}
-\put(1.5,0.375){\makebox(0,0)[c]{\rule{0.5pt}{4pt}}}
-%% ---
-\path(0.75,0)(0.75,0.75)
-\put(0.75,0){\makebox(0,0)[c]{\rule{4pt}{0.5pt}}}
-\put(0.75,0.75){\makebox(0,0)[c]{\rule{4pt}{0.5pt}}}
-%% ---
-\thicklines
-\path(0,0.375)(0.025,0.362444)(0.05,0.351239)(0.075,0.343466)(0.1,0.340756)
-  (0.125,0.343988)(0.15,0.353074)(0.175,0.366907)(0.2,0.383461)
-  (0.225,0.400058)(0.25,0.413765)(0.275,0.42186)(0.3,0.422302)
-  (0.325,0.414135)(0.35,0.397758)(0.375,0.375)(0.4,0.348991)
-  (0.425,0.323823)(0.45,0.304047)(0.475,0.29406)(0.5,0.297469)
-  (0.525,0.316532)(0.55,0.351733)(0.575,0.40159)(0.6,0.462702)
-  (0.625,0.530061)(0.65,0.597586)(0.675,0.65881)(0.7,0.707649)
-  (0.725,0.73913)(0.75,0.75)(0.775,0.73913)(0.8,0.707649)(0.825,0.65881)
-  (0.85,0.597586)(0.875,0.530061)(0.9,0.462702)(0.925,0.40159)
-  (0.95,0.351733)(0.975,0.316532)(1,0.297469)(1.025,0.29406)(1.05,0.304047)
-  (1.075,0.323823)(1.1,0.348991)(1.125,0.375)(1.15,0.397758)
-  (1.175,0.414135)(1.2,0.422302)(1.225,0.42186)(1.25,0.413765)
-  (1.275,0.400058)(1.3,0.383461)(1.325,0.366907)(1.35,0.353074)
-  (1.375,0.343988)(1.4,0.340756)(1.425,0.343466)(1.45,0.351239)
-  (1.475,0.362444)(1.5,0.375)
-\path(1.5,0.375)
-\put(0.75,-0.055348){\makebox(0,0)[t]{\code{sinx}}}
-\end{picture}
diff --git a/graphics/epix/doc/sinx.xp b/graphics/epix/doc/sinx.xp
deleted file mode 100644
index 62c08bbc48..0000000000
--- a/graphics/epix/doc/sinx.xp
+++ /dev/null
@@ -1,23 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-int main() 
-{
-  bounding_box(P(-2,-1),P(2,1));
-  unitlength("1in");
-  picture(1.5,0.75);
-
-  begin();
-  revolutions();
-
-  h_axis(4);
-  v_axis(1);
-
-  bold();
-  plot(sinx, x_min, x_max, 60);
-
-  label(P(0,y_min), P(0,-4), "\\code{sinx}", b);
-
-  end();
-}
diff --git a/graphics/epix/doc/slices.eepic b/graphics/epix/doc/slices.eepic
deleted file mode 100644
index 4aebe69de4..0000000000
--- a/graphics/epix/doc/slices.eepic
+++ /dev/null
@@ -1,45 +0,0 @@
-%% Generated from slices.xp on Sun Dec 31 13:11:11 EST 2006 by
-%% ePiX-1.0.22
-%%
-%%   Cartesian bounding box: [0,7] x [0,2]
-%%   Actual size: 5in x 0.75in
-%%   Figure offset: right by 0in, up by 0in
-%%
-\setlength{\unitlength}{1in}
-\begin{picture}(5,0.75)(-0,-0)
-%% ---
-\thicklines
-\path(0,0)(0,0.75)
-\path(0.178571,0)(0.178571,0.75)
-\path(0.357143,0)(0.357143,0.75)
-\path(0.535714,0)(0.535714,0.75)
-\path(0.714286,0)(0.714286,0.75)
-\path(0.892857,0)(0.892857,0.75)
-\path(1.07143,0)(1.07143,0.75)
-\path(1.25,0)(1.25,0.75)
-\path(1.42857,0)(1.42857,0.75)
-\path(0,0)(1.42857,0)
-\path(0,0.107143)(1.42857,0.107143)
-\path(0,0.214286)(1.42857,0.214286)
-\path(0,0.321429)(1.42857,0.321429)
-\path(0,0.428571)(1.42857,0.428571)
-\path(0,0.535714)(1.42857,0.535714)
-\path(0,0.642857)(1.42857,0.642857)
-\path(0,0.75)(1.42857,0.75)
-\put(0.714286,-0.055348){\makebox(0,0)[t]{\code{R}}}
-\path(1.78571,0)(1.78571,0.75)
-\path(1.96429,0)(1.96429,0.75)
-\path(2.14286,0)(2.14286,0.75)
-\path(2.32143,0)(2.32143,0.75)
-\path(2.5,0)(2.5,0.75)
-\path(2.67857,0)(2.67857,0.75)
-\path(2.85714,0)(2.85714,0.75)
-\path(3.03571,0)(3.03571,0.75)
-\path(3.21429,0)(3.21429,0.75)
-\put(2.5,-0.055348){\makebox(0,0)[t]{\code{R.slices1()}}}
-\path(3.57143,0)(5,0)
-\path(3.57143,0.25)(5,0.25)
-\path(3.57143,0.5)(5,0.5)
-\path(3.57143,0.75)(5,0.75)
-\put(4.28571,-0.055348){\makebox(0,0)[t]{\code{R.slices2(3)}}}
-\end{picture}
diff --git a/graphics/epix/doc/slices.xp b/graphics/epix/doc/slices.xp
deleted file mode 100644
index c67dddf876..0000000000
--- a/graphics/epix/doc/slices.xp
+++ /dev/null
@@ -1,39 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-void my_grid(const P& loc, int N1, int N2, std::string lab)
-{
-  if (0 < N1)
-    {
-      const double dx(1.0/N1);
-      for (int i=-N1; i<= N1; ++i)
-	line(loc+P(i*dx,0), loc+P(i*dx,2));
-    }
-
-  if (0 < N2)
-    {
-      const double dy(1.0/N2);
-      for (int i=0; i<= N2; ++i)
-	line(loc+P(-1,2*i*dy), loc+P(1,2*i*dy));
-    }
-
-  label(loc, P(0,-4), "\\code{"+lab+"}", b);
-}
-
-int main() 
-{
-  bounding_box(P(0,0),P(7,2));
-  unitlength("1in");
-  picture(5,0.75);
-
-  begin();
-
-  bold();
-
-  my_grid(P(1,0), 4, 7, "R");
-  my_grid(P(3.5,0), 4, 0, "R.slices1()");
-  my_grid(P(6,0), 0, 3, "R.slices2(3)");
-
-  end();
-}
diff --git a/graphics/epix/domain.cc b/graphics/epix/domain.cc
deleted file mode 100644
index cbb86a4d42..0000000000
--- a/graphics/epix/domain.cc
+++ /dev/null
@@ -1,370 +0,0 @@
-/* 
- * domain.cc -- ePiX domain slicing operations
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.10
- * Last Change: August09, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include <cmath>
-#include <list>
-#include <iostream>
-
-#include "constants.h"
-#include "triples.h"
-#include "functions.h"
-
-#include "domain.h"
-
-namespace ePiX {
-
-  typedef std::list<domain>::const_iterator dolci;
-  const double EPS(EPIX_EPSILON);
-
-  mesh::mesh(int n1, int n2, int n3)
-    : n_1((int)max(1, fabs(n1))),
-      n_2((int)max(1, fabs(n2))),
-      n_3((int)max(1, fabs(n3))) { }
-
-  mesh::mesh(int n)
-    : n_1((int)max(1, fabs(n))),
-      n_2((int)max(1, fabs(n))),
-      n_3((int)max(1, fabs(n))) { }
-
-  mesh::mesh() : n_1(1), n_2(1), n_3(1) { }
-
-
-  domain::domain(const P& arg1, const P& arg2, const mesh& c, const mesh& f)
-    : m_corner1(arg1), m_corner2(arg2)
-  {
-    int c1(c.n1()), c2(c.n2()), c3(c.n3());
-    int f1(f.n1()), f2(f.n2()), f3(f.n3());
-
-    if (m_corner1.x1() == m_corner2.x1()) { c1 = f1 = 1; }
-    if (m_corner1.x2() == m_corner2.x2()) { c2 = f2 = 1; }
-    if (m_corner1.x3() == m_corner2.x3()) { c3 = f3 = 1; }
-
-    m_coarse = mesh(c1,c2,c3);
-    m_fine   = mesh(f1,f2,f3);
-  }
-
-  domain::domain(const P& arg1, const P& arg2, const mesh& c)
-    : m_corner1(arg1), m_corner2(arg2)
-  {
-    int c1(c.n1()), c2(c.n2()), c3(c.n3());
-
-    if (m_corner1.x1() == m_corner2.x1()) { c1 = 1; }
-    if (m_corner1.x2() == m_corner2.x2()) { c2 = 1; }
-    if (m_corner1.x3() == m_corner2.x3()) { c3 = 1; }
-
-    m_coarse = mesh(c1,c2,c3);
-    m_fine   = mesh(c1,c2,c3);
-  }
-
-  // 1-dim'l domain
-  domain::domain(double t_min, double t_max, int num_pts)
-    : m_corner1(t_min), m_corner2(t_max), m_coarse(num_pts), m_fine(num_pts)
-  { }
-
-
-  int domain::dim() const
-  {
-    int D(0);
-    if (fabs(m_corner2.x1() - m_corner1.x1()) > EPIX_EPSILON)
-      ++D;
-    if (fabs(m_corner2.x2() - m_corner1.x2()) > EPIX_EPSILON)
-      ++D;
-    if (fabs(m_corner2.x3() - m_corner1.x3()) > EPIX_EPSILON)
-      ++D;
-
-    return D;
-  }
-
-  double domain::step1() const
-  {
-    return (m_corner2.x1() - m_corner1.x1())/m_coarse.n1();
-  }
-
-  double domain::step2() const
-  {
-    return (m_corner2.x2() - m_corner1.x2())/m_coarse.n2();
-  }
-
-  double domain::step3() const
-  {
-    return (m_corner2.x3() - m_corner1.x3())/m_coarse.n3();
-  }
-
-  double domain::dx1() const
-  {
-    return (m_corner2.x1() - m_corner1.x1())/m_fine.n1();
-  }
-
-  double domain::dx2() const
-  {
-    return (m_corner2.x2() - m_corner1.x2())/m_fine.n2();
-  }
-
-  double domain::dx3() const
-  {
-    return (m_corner2.x3() - m_corner1.x3())/m_fine.n3();
-  }
-
-
-  // resizing attempts to preserve real resolution
-  domain domain::resize1(double a1, double b1) const
-  {
-    P new_corner1(a1, m_corner1.x2(), m_corner1.x3());
-    P new_corner2(b1, m_corner2.x2(), m_corner2.x3());
-
-    // hack to avoid spurious round-down; should never cause round-up
-    double ratio((b1-a1)/(m_corner2.x1()-m_corner1.x1()) + EPS);
-    mesh new_c((int)floor(ratio*m_coarse.n1()), m_coarse.n2(),  m_coarse.n3());
-    mesh new_f((int)floor(ratio*m_fine.n1()),   m_fine.n2(),    m_fine.n3());
-
-    if (step1() == 0)
-      {
-	new_c = mesh(1, m_coarse.n2(),  m_coarse.n3());
-	new_f = mesh(1,   m_fine.n2(),    m_fine.n3());
-      }
-
-    return domain(new_corner1, new_corner2, new_c, new_f);
-  }
-
-  domain domain::resize2(double a2, double b2) const
-  {
-    P new_corner1(m_corner1.x1(),  a2, m_corner1.x3());
-    P new_corner2(m_corner2.x1(),  b2, m_corner2.x3());
-
-    double ratio((b2-a2)/(m_corner2.x2()-m_corner1.x2()) + EPS);
-    mesh new_c(m_coarse.n1(), (int)floor(ratio*m_coarse.n2()),  m_coarse.n3());
-    mesh new_f(  m_fine.n1(), (int)floor(ratio*m_fine.n2()),    m_fine.n3());
-
-    if (step2() == 0)
-      {
-	new_c = mesh(m_coarse.n1(), 1,  m_coarse.n3());
-	new_f = mesh(  m_fine.n1(), 1,    m_fine.n3());
-      }
-
-    return domain(new_corner1, new_corner2, new_c, new_f);
-  }
-
-  domain domain::resize3(double a3, double b3) const
-  {
-    P new_corner1(m_corner1.x1(),  m_corner1.x2(), a3);
-    P new_corner2(m_corner2.x1(),  m_corner2.x2(), b3);
-
-    double ratio((b3-a3)/(m_corner2.x3()-m_corner1.x3()) + EPS);
-    mesh new_c(m_coarse.n1(), m_coarse.n2(), (int)floor(ratio*m_coarse.n3()));
-    mesh new_f(  m_fine.n1(),   m_fine.n2(), (int)floor(ratio*m_fine.n3()));
-
-    if (step3() == 0)
-      {
-	new_c = mesh(m_coarse.n1(), m_coarse.n2(),  1);
-	new_f = mesh(  m_fine.n1(),   m_fine.n2(),  1);
-      }
-
-    return domain(new_corner1, new_corner2, new_c, new_f);
-  }
-
-
-  // "snip_to" is defined in functions.h and performs the "obvious"
-  // truncation: snip_to(x, a, b) = x, min(a,b), or max(a,b)
-
-  // one slice
-  domain domain::slice1(double a1) const
-  {
-    a1 = snip_to(a1, m_corner1.x1(), m_corner2.x1());
-
-    return domain(P(a1,  m_corner1.x2(), m_corner1.x3()),
-		  P(a1,  m_corner2.x2(), m_corner2.x3()),
-		  mesh(1, m_coarse.n2(),  m_coarse.n3()),
-		  mesh(1,   m_fine.n2(),    m_fine.n3()));
-  }
-
-  domain domain::slice2(double a2) const
-  {
-    a2 = snip_to(a2, m_corner1.x2(), m_corner2.x2());
-
-    return domain(P(m_corner1.x1(),  a2, m_corner1.x3()),
-		  P(m_corner2.x1(),  a2, m_corner2.x3()),
-		  mesh(m_coarse.n1(), 1,  m_coarse.n3()),
-		  mesh(  m_fine.n1(), 1,    m_fine.n3()));
-  }
-
-  domain domain::slice3(double a3) const
-  {
-    a3 = snip_to(a3, m_corner1.x3(), m_corner2.x3());
-
-    return domain(P(m_corner1.x1(),  m_corner1.x2(), a3),
-		  P(m_corner2.x1(),  m_corner2.x2(), a3),
-		  mesh(m_coarse.n1(), m_coarse.n2(),  1),
-		  mesh(  m_fine.n1(),   m_fine.n2(),  1));
-  }
-
-
-  // coordinate slices
-  std::list<domain> domain::slices1(const unsigned int n) const
-  {
-    unsigned int N(m_coarse.n1());
-    double du(step1());
-
-    if (n > 0)
-      {
-	du *= N*1.0/n;
-	N = n;
-      }
-
-    std::list<domain> val;
-
-    for (unsigned int i=0; i <= N; ++i)
-      val.push_back(slice1(m_corner1.x1() + i*du));
-
-    return val;
-  }
-
-  std::list<domain> domain::slices2(const unsigned int n) const
-  {
-    unsigned int N(m_coarse.n2());
-    double du(step2());
-
-    if (n > 0)
-      {
-	du *= N*1.0/n;
-	N = n;
-      }
-
-    std::list<domain> val;
-
-    for (unsigned int i=0; i <= N; ++i)
-      val.push_back(slice2(m_corner1.x2() + i*du));
-
-    return val;
-  }
-
-  std::list<domain> domain::slices3(const unsigned int n) const
-  {
-    unsigned int N(m_coarse.n3());
-    double du(step3());
-
-    if (n > 0)
-      {
-	du *= N*1.0/n;
-	N = n;
-      }
-
-    std::list<domain> val;
-
-    for (unsigned int i=0; i <= N; ++i)
-      val.push_back(slice3(m_corner1.x3() + i*du));
-
-    return val;
-  }
-
-  P domain::corner1() const
-  {
-    return m_corner1;
-  }
-  P domain::corner2() const
-  {
-    return m_corner2;
-  }
-
-  double domain::corner1_x1() const
-  {
-    return m_corner1.x1();
-  }
-  double domain::corner1_x2() const
-  {
-    return m_corner1.x2();
-  }
-  double domain::corner1_x3() const
-  {
-    return m_corner1.x3();
-  }
-
-  double domain::corner2_x1() const
-  {
-    return m_corner2.x1();
-  }
-  double domain::corner2_x2() const
-  {
-    return m_corner2.x2();
-  }
-  double domain::corner2_x3() const
-  {
-    return m_corner2.x3();
-  }
-
-
-  int domain::coarse_n1() const
-  {
-    return m_coarse.n1();
-  }
-  int domain::coarse_n2() const
-  {
-    return m_coarse.n2();
-  }
-  int domain::coarse_n3() const
-  {
-    return m_coarse.n3();
-  }
-
-  int domain::fine_n1() const
-  {
-    return m_fine.n1();
-  }
-  int domain::fine_n2() const
-  {
-    return m_fine.n2();
-  }
-  int domain::fine_n3() const
-  {
-    return m_fine.n3();
-  }
-
-
-  domain_list::domain_list(std::list<domain> arg)
-    : m_list(arg) { }
-
-  domain_list& domain_list::add(const domain& arg)
-  {
-    m_list.push_back(arg);
-    return *this;
-  }
-
-  domain_list& domain_list::add(const domain_list& arg)
-  {
-    // Less efficient than m_list.splice(m_list.end(), arg), but preserves arg
-    for (dolci p=arg.m_list.begin(); p != arg.m_list.end(); ++p)
-      m_list.push_back(*p);
-
-    return *this;
-  }
-} // end of namespace
diff --git a/graphics/epix/domain.h b/graphics/epix/domain.h
deleted file mode 100644
index d0b2bf70ea..0000000000
--- a/graphics/epix/domain.h
+++ /dev/null
@@ -1,143 +0,0 @@
-/* 
- * domain.h -- ePiX mesh and domain classes
- *
- * This file is part of ePiX, a preprocessor for creating high-quality 
- * line figures in LaTeX 
- *
- * Version 1.1.6
- * Last Change: July 04, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#ifndef EPIX_DOMAIN
-#define EPIX_DOMAIN
-
-#include <list>
-
-#include "triples.h"
-#include "functions.h"
-
-namespace ePiX {
-
-  class mesh {
-  public:
-    mesh(int n1, int n2, int n3=1);
-    mesh(int n); // mesh(n, n, n);
-    mesh();      // mesh(1, 1, 1);
-
-    int n1() const { return n_1; }
-    int n2() const { return n_2; }
-    int n3() const { return n_3; }
-
-  private:
-    int n_1;
-    int n_2;
-    int n_3;
-  }; // end of class mesh
-
-  // A domain is a gridded coordinate box with specified corners
-  // and coarse/fine meshes, used for plotting. The "coarse" step
-  // sizes are step1, etc., and the "fine" step sizes are dx1, etc.
-  // Steps may be negative.
-  //
-  // A domain may be "sliced" by setting one of its coordinates to
-  // a specified constant.
-  //
-  // Data members are public for convenience; each member ensures
-  // its own well-constructedness.
-  //
-  class domain {
-  public:
-    domain(const P& arg1, const P& arg2, const mesh& c, const mesh& f);
-    domain(const P& arg1, const P& arg2, const mesh& c);
-
-    // 1-dim'l domain
-    domain(double t_min, double t_max, int num_pts);
-
-    int dim() const; // dimension
-
-    // big and small steps
-    double step1() const;
-    double step2() const;
-    double step3() const;
-
-    double dx1() const;
-    double dx2() const;
-    double dx3() const;
-
-    // resizing attempts to preserve real resolution
-    domain resize1(double a1, double b1) const;
-    domain resize2(double a2, double b2) const;
-    domain resize3(double a3, double b3) const;
-
-    // coordinate slices
-    domain slice1(double a1) const;
-    domain slice2(double a2) const;
-    domain slice3(double a3) const;
-
-    // "n=0": use number from coarse mesh
-    std::list<domain> slices1(const unsigned int n=0) const;
-    std::list<domain> slices2(const unsigned int n=0) const;
-    std::list<domain> slices3(const unsigned int n=0) const;
-
-    // state  functions for internal use
-    P corner1() const;
-    P corner2() const;
-
-    double corner1_x1() const;
-    double corner1_x2() const;
-    double corner1_x3() const;
-
-    double corner2_x1() const;
-    double corner2_x2() const;
-    double corner2_x3() const;
-
-    int coarse_n1() const;
-    int coarse_n2() const;
-    int coarse_n3() const;
-
-    int fine_n1() const;
-    int fine_n2() const;
-    int fine_n3() const;
-
-  private:
-    P m_corner1;
-    P m_corner2;
-    mesh m_coarse;
-    mesh m_fine;
-  }; // end of class domain
-
-  class domain_list {
-  public:
-    domain_list(std::list<domain>); // implicitly converts "slices" output
-    domain_list& add(const domain&);
-    domain_list& add(const domain_list&);
-
-    std::list<domain> m_list; // public: we're a simple wrapper
-  }; // end of class domain_list
-} // end of namespace
-
-#endif /* EPIX_DOMAIN */
diff --git a/graphics/epix/edge_data.h b/graphics/epix/edge_data.h
deleted file mode 100644
index 60d7a8bf56..0000000000
--- a/graphics/epix/edge_data.h
+++ /dev/null
@@ -1,75 +0,0 @@
-/* 
- * edge_data.h -- ePiX::edge implementation classes for polyline/polygon
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.17
- * Last Change: September 13, 2007
- *
- * 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- *
- *
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#ifndef EPIX_EDGE_DATA
-#define EPIX_EDGE_DATA
-#include <algorithm>
-
-#include "triples.h"
-#include "pairs.h"
-
-namespace ePiX {
-
-  // basic edge data: ordered endpoints and visibility flag
-  template<typename T> class edge_data {
-  public:
-    edge_data(const T& fm, const T& to, bool seen)
-      : m_tail(fm), m_head(to), m_seen(seen) { }
-
-    T tail()    const { return m_tail; }
-    T head()    const { return m_head; }
-    bool is_seen() const { return m_seen; }
-    bool is_null() const { return m_tail == m_head; }
-
-    edge_data& reverse()
-      {
-	std::swap(m_tail, m_head);
-	return *this;
-      }
-
-    double length() const
-      {
-	return norm(m_head - m_tail);
-      }
-
-    void seen(bool S) { m_seen=S; }
-
-  private:
-    T m_tail;
-    T m_head;
-    bool m_seen;
-  };
-
-  typedef edge_data<P>    edge3d;
-  typedef edge_data<pair> edge2d;
-} // end of namespace
-
-#endif /* EPIX_EDGE_DATA */
diff --git a/graphics/epix/eepic.cc b/graphics/epix/eepic.cc
deleted file mode 100644
index eaed35a653..0000000000
--- a/graphics/epix/eepic.cc
+++ /dev/null
@@ -1,297 +0,0 @@
-/*
- * eepic.cc -- ePiX's eepic output format
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.2.0-2
- * Last Change: September 26, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
- 
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#include <cmath>
-#include <list>
-
-#include <string>
-#include <sstream>
-
-#include <set> // for pallet
-
-#include "constants.h"
-
-#include "functions.h"
-
-#include "pairs.h"
-#include "edge_data.h"
-
-#include "Color.h"
-
-#include "path_style.h"
-#include "pen_data.h"
-
-#include "hatching.h"
-
-#include "format.h"
-#include "eepic.h"
-
-namespace ePiX {
-
-  // rotate successive hatches this much to avoid parallelity
-  const double d_hatch_theta(111.24612); // ~90*(sqrt(5)-1)
-
-  eepic::eepic()
-    : m_ink(Black()), m_nib(PLAIN_WIDTH), m_hatch(0) { }
-
-  eepic* eepic::clone() const
-  {
-    return new eepic(*this);
-  }
-
-  // Filled region with specified Cartesian edges, offset, and color
-  std::string eepic::print_fill(const std::list<edge2d>& edges,
-				const pair& offset,
-				const Color& fc,
-				const pen_data& line,
-				const std::string& len) const
-  {
-    std::stringstream obuf;
-
-    // set angle
-    const double hatch_angle(m_hatch);
-    m_hatch += d_hatch_theta;
-
-    // draw hatch lines separated by pen.width(), actual line width
-    // scaled by density
-    double dens(fc.alpha()); // transparency
-    if (dens < EPIX_EPSILON)
-      return "";
-
-    // else
-    length hatch_width(length(PLAIN_WIDTH).to(len));
-
-    path_state style; // solid
-
-    if (EPIX_EPSILON < dens*hatch_width.magnitude())
-      {
-	// Use fill color, draw thin lines to simulate transparency.
-	// Area covered by double-hatching is (supposed to be) dens.
-	pen_data fill_pen(fc, (1-sqrt(1-dens))*hatch_width);
-
-	// draw hatch-filled edges
-	hatch_data bd1(hatch_angle, hatch_width.magnitude(), edges);
-	for (unsigned int i=0; i < bd1.data().size(); ++i)
-	  obuf << format::print_line(bd1.data().at(i), offset,
-				     fill_pen, style, std::string(""), len);
-
-	// re-draw hatch lines at right angles...
-	hatch_data bd2(hatch_angle+90, hatch_width.magnitude(), edges);
-	for (unsigned int i=0; i < bd2.data().size(); ++i)
-	  obuf << format::print_line(bd2.data().at(i), offset,
-				     fill_pen, style, "", len);
-      }
-
-    obuf << set_pen_state(line);
-    obuf << print_paths(edges, offset, "", len);
-
-    return obuf.str();
-  } // end of eepic::print_fill()
-
-
-  // may assume line is visible
-  std::string eepic::print_line(const std::list<edge2d>& edges,
-				const pair& offset,
-				const pen_data& line,
-				const pen_data& base,
-				const path_state& style,
-				const std::string& len) const
-  {
-    std::string value;
-
-    // draw *solid* base first if necessary
-    if (line.width() < base.width() && !base.color().is_unset())
-      value += format::print_line(edges, offset, base, path_state(), "", len);
-
-    return value += format::print_line(edges, offset, line, style, "", len);
-  }
-
-
-  std::string eepic::print_color(const std::string& model,
-				 const std::string& name,
-				 double d1, double d2, double d3) const
-  {
-    return format::xdefinecolor(model, name, d1, d2, d3);
-  }
-
-  std::string eepic::print_color(const std::string& model,
-				 const std::string& name,
-				 double d1, double d2,
-				 double d3, double d4) const
-  {
-    return format::xdefinecolor(model, name, d1, d2, d3, d4);
-  }
-
-  // one-line comment
-  std::string eepic::print_comment(const std::string& msg) const
-  {
-    std::stringstream obuf;
-    obuf << "%% " << msg << std::endl;
-
-    return obuf.str();
-  }
-
-  // verbatim string, newline protected
-  std::string eepic::print_verbatim(const std::string& msg) const
-  {
-    std::stringstream obuf;
-    obuf << msg << "%" << std::endl;
-
-    return obuf.str();
-  }
-
-  void eepic::reset_state() const
-  {
-    m_ink = Neutral();
-    m_nib = length(0);
-  }
-
-
-  //// private member functions ////
-  std::string eepic::start_picture(const pair& sz, const pair& offset) const
-  {
-    std::stringstream obuf;
-    obuf << "\\begin{picture}"
-	 << format::print(sz) << format::print(-offset) << "%" << std::endl;
-
-    return obuf.str();
-  }
-
-  std::string eepic::end_picture() const
-  {
-    std::stringstream obuf;
-    obuf << "\\end{picture}%" << std::endl;
-    return obuf.str();
-  }
-
-  std::string eepic::set_unitlength(const std::string& len) const
-  {
-    std::stringstream obuf;
-
-    obuf << "\\setlength{\\unitlength}{1" << len << "}%" << std::endl;
-
-    return obuf.str();
-  }
-
-
-  std::string eepic::usepackages() const
-  {
-    return "usepackages epic,eepic,xcolor";
-  }
-
-  // string argument for passing attributes local to this path/loop
-  std::string eepic::start_open_path(const std::string& attribs) const
-  {
-    return "\\path";
-  }
-
-  std::string eepic::end_open_path(const std::string& attribs) const
-  {
-    std::stringstream obuf;
-    obuf << std::endl;
-    return obuf.str();
-  }
-
-  std::string eepic::start_closed_path(const std::string& attribs) const
-  {
-    return "\\path";
-  }
-
-  std::string eepic::end_closed_path(const std::string& attribs) const
-  {
-    std::stringstream obuf;
-    obuf << std::endl;
-    return obuf.str();
-  }
-
-  std::string eepic::set_fill_state(const Color& col) const // unused
-  {
-    std::stringstream obuf;
-
-    if (m_ink != col)
-      {
-	m_ink = col;
-	obuf << "\\color{" << m_ink.name() << "}%" << std::endl;
-      }
-
-    return obuf.str();
-  }
-
-  std::string eepic::set_pen_state(const pen_data& pen) const
-  {
-    std::stringstream obuf;
-
-    if (m_nib != pen.width())
-      {
-	m_nib = pen.width();
-	obuf << "\\allinethickness{" << m_nib.name() << "}%" << std::endl;
-      }
-
-    if (m_ink != pen.color())
-      {
-	m_ink = pen.color();
-	obuf << "\\color{" << m_ink.name() << "}%" << std::endl;
-      }
-
-    return obuf.str();
-  }
-
-  // place a LaTeX box of width zero (containing string) at location (pair)
-  std::string eepic::put_box(const pair& loc, const std::string& msg) const
-  {
-    std::stringstream obuf;
-    obuf << "\\put" << print(loc) << "{" << msg << "}" << std::endl;
-
-    return obuf.str();
-  }
-
-  std::string eepic::print_circle_marker(const pair& here, double diam,
-					 bool fill, const Color& color,
-					 const std::string& len) const
-  {
-    std::stringstream obuf;
-    obuf << "\\put" << print(here)
-	 << "{\\color{" << print(color) << "}$";
-
-    if (fill)
-      obuf << "\\allinethickness{" << 0.5*diam << len << "}"
-	   << "\\circle{" << 0.5*diam << "}";
-
-    else
-      obuf << "\\circle{" << diam << "}";
-
-    obuf << "$}%" << std::endl;
-
-    return obuf.str();
-  }
-} // end of namespace
diff --git a/graphics/epix/eepic.h b/graphics/epix/eepic.h
deleted file mode 100644
index 08d37e4874..0000000000
--- a/graphics/epix/eepic.h
+++ /dev/null
@@ -1,127 +0,0 @@
-/*
- * eepic.h -- ePiX's eepic output format
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.15
- * Last Change: September 07, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- *
- *
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#ifndef EPIX_EEPIC
-#define EPIX_EEPIC
-
-#include <string>
-#include <list>
-#include <set>
-
-#include "Color.h"
-#include "length.h"
-
-#include "edge_data.h"
-#include "format.h"
-
-namespace ePiX {
-
-  class path_state;
-  class pen_data;
-
-  class eepic : public format {
-  public:
-    eepic();
-
-    eepic* clone() const;
-
-    // Filled region with specified Cartesian edges, offset, and color
-    std::string print_fill(const std::list<edge2d>& edges,
-			   const pair& offset,
-			   const Color& fill,
-			   const pen_data& line,
-			   const std::string& len) const;
-
-    // Unfilled region, specified Cartesian edges. Should generally be
-    // trivially implemented using one-pen function (supplied).
-    std::string print_line(const std::list<edge2d>& edges,
-			   const pair& offset,
-			   const pen_data& line_pen,
-			   const pen_data& base_pen,
-			   const path_state& style,
-			   const std::string& len) const;
-
-    // Print color declaration strings: model, name, densities
-    std::string print_color(const std::string&,
-			    const std::string&,
-			    double,
-			    double,
-			    double) const;
-
-    std::string print_color(const std::string&,
-			    const std::string&,
-			    double,
-			    double,
-			    double,
-			    double) const;
-
-    // One-line comment
-    std::string print_comment(const std::string&) const;
-
-    // Verbatim output
-    std::string print_verbatim(const std::string&) const;
-
-    void reset_state() const;
-
-  private:
-    mutable Color  m_ink;
-    mutable length m_nib;
-    mutable double m_hatch;
-
-    std::string start_picture(const pair&, const pair&) const;
-    std::string end_picture() const;
-
-    std::string set_unitlength(const std::string& len) const;
-
-    std::string usepackages() const;
-
-    // string argument for passing attributes local to this path/loop
-    std::string start_open_path(const std::string&) const;
-    std::string end_open_path(const std::string&) const;
-
-    std::string start_closed_path(const std::string&) const;
-    std::string end_closed_path(const std::string&) const;
-
-    // print declarations to set state of output format
-    std::string set_fill_state(const Color&) const;
-    std::string set_pen_state(const pen_data&) const;
-
-    // place a LaTeX box of width zero (containing string) at location (pair)
-    std::string put_box(const pair&, const std::string&) const;
-
-    std::string print_circle_marker(const pair& here, double diam,
-				    bool fill, const Color& color,
-				    const std::string& len) const;
-  }; // end of class eepic
-} // end of namespace
-
-#endif /* EPIX_EEPIC */
diff --git a/graphics/epix/elaps.1 b/graphics/epix/elaps.1
deleted file mode 100644
index 4430a02037..0000000000
--- a/graphics/epix/elaps.1
+++ /dev/null
@@ -1 +0,0 @@
-.so man1/epix.1
diff --git a/graphics/epix/elaps.in b/graphics/epix/elaps.in
deleted file mode 100644
index 6e8041f3d3..0000000000
--- a/graphics/epix/elaps.in
+++ /dev/null
@@ -1,485 +0,0 @@
-#! /bin/bash
-# 
-# elaps: Convert an epix file to encapsulated Postscript, i.e. epix2eps
-# 
-# Options: --help for usage, --version for version and license
-#
-# Compiler flags may be specified on the command line or in the config
-# file ~/.epixrc. The script attempts to deal intelligently with missing
-# or multiple extensions. If the input file has a recognized extension,
-# there's no issue. If only the root name <infile> is given, the script
-# searches for completions in the order of preference dictated by the
-# variable EPIX_EXTENSIONS. A warning is issued for multiple matches.
-#
-# Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
-# Andrew D. Hwang   <For address, do "elaps -V">
-# 
-
-. "@pkglibdir@/epix-lib.sh"
-
-EPIX_CONFIG_FILE="$HOME/.epixrc"
-# Search these extensions in order of preference
-ELAPS_EXTENSIONS="eepic xp flx cc c C cpp" # or NULL
-ELAPS_DOT_EXT=".${ELAPS_EXTENSIONS// /|.}" # for usage message
-
-# default options
-ELAPS_PKGS="latexsym,amsmath,rotating"
-declare ELAPS_PSTCOL
-ELAPS_SIZE=12 # figure compiled in [12pt]{article}
-
-ELAPS_PDF="no"    # Create PDF file?
-ELAPS_PS="no"     # Create PS file instead of EPS?
-
-declare -a EPIX_OPTS
-declare -a DVIPS_OPTS
-
-LATEX_BIN=latex  # elaps only uses [huge]latex, not pdflatex or pslatex
-LATEX_INTERACT="scrollmode"
-
-# auxiliary programs
-PS2EPS="ps2epsi"
-
-# internal filenames
-PID=$$
-ELAPS_TEMP_EEPIC="$PROG-$PID".eepic
-ELAPS_TEMP_LATEX="$PROG-$PID".tex
-ELAPS_TEMP_DVI="$PROG-$PID".dvi
-ELAPS_TEMP_PS="$PROG-$PID".ps
-ELAPS_TEMP_EPSI="$PROG-$PID".epsi
-
-# globals to pass tokens
-ELAPS_USER_OUT="no" # user specified output file?
-
-declare -a ELAPS_FILE_LIST
-declare -a TMP_CMD
-
-declare -a TEMPFILES
-trap '[ -n "${TEMPFILES[*]}" ] && rm -f "${TEMPFILES[@]}"' 0 1 2 3 7 10 13 15
-
-TEMPFILES=("$ELAPS_TEMP_EEPIC" "$ELAPS_TEMP_LATEX" "$ELAPS_TEMP_DVI" \
-    "$ELAPS_TEMP_PS" "$ELAPS_TEMP_EPSI" )
-
-function elaps_help()
-{
-cat <<"HELP"
-Options:
-    -h, --help
-      Show this message and exit
-
-    -V, --version, --gpl
-      Show version and license
-
-    -v, --verbose
-      Show success/failure messages
-
-    -H, --huge
-      Use hugelatex (if available)
-
-    -i, --interactive
-      Run LaTeX interactively (implies verbose)
-
-    -n, --no-config
-      Ignore $(HOME)/.dvipsrc
-
-    -o, --output
-      Specify output file (ONLY for use with a single input file)
-
-    --pst
-      Write eepic file using PSTricks macros
-
-    --tikz
-      Write eepic file using tikz macros
-
-    --eepic
-      Write eepic file using eepic macros
-
-    -p, --pkg <LaTeX package>
-      Use an additional LaTeX package in the temporary LaTeX file, e.g. 
-      "-p floatflt". Multiple packages are specified one per "-p" flag.
-
-    -pdf, --pdf
-      Create PDF file instead of EPS
-
-    -ps, --ps
-      Create standalone PostScript file (overrides --pdf)
-
-    --pstcol
-      Use (obsolete) pstcol package instead of pstricks
-
-    -P<printer>
-      dvips printer options, e.g. "-Pamz", may be given on the command 
-      line. They are also read from ~/.dvipsrc if this file exists.
-
-    --size
-      Set default font size: 10, 11, or 12 (default)
-
-    Other options are passed to epix (q.v.).
-
-HELP
-ePiX_bugreport
-
-} # End of elaps_help
-
-# Generate US letter-friendly LaTeX file
-function elaps_make_latex ()
-{
-    ALL_LATEX_PKGS="$ELAPS_PKGS"
-
-# Get LATEX_PKGS from input file
-    ePiX_usepackages $2
-    if [ ! -z "$LATEX_PKGS" ]; then # should always be true...
-	ALL_LATEX_PKGS="$ALL_LATEX_PKGS,$LATEX_PKGS"
-    else # compatibility fallback
-	ALL_LATEX_PKGS="$ALL_LATEX_PKGS,epic,eepic,pstricks"
-    fi
-
-# Clear global
-    unset LATEX_PKGS
-
-# No effect unless file requires pstricks
-    if [ ! -z "$ELAPS_PSTCOL" ]; then
-	ALL_LATEX_PKGS="${ALL_LATEX_PKGS/pstricks/$ELAPS_PSTCOL/}"
-    fi
-
-cat <<LaTeX >> $1
-\documentclass[${ELAPS_SIZE}pt]{article}
-\usepackage{$ALL_LATEX_PKGS}
-\setlength{\textwidth}{7.5in}
-\setlength{\textheight}{9.5in}
-\setlength{\oddsidemargin}{-0.5in}
-\setlength{\topmargin}{0in}
-\pagestyle{empty}
-
-\begin{document}
-\vfil
-\begin{center}
-\input{$2}
-\end{center}
-\vfil
-\end{document}
-
-LaTeX
-} # End of elaps_make_latex
-
-
-function elaps_parse_options ()
-{
-    while [ "$1" != "${1#-}" ]; do 
-        case "$1" in
-
-        -h|--help)
-	    ePiX_usage elaps $ELAPS_DOT_EXT
-	    elaps_help
-	    exit 0
-	    ;;
-
-        -H|--huge)
-            if [ $(which hugelatex 2> /dev/null) ]; then
-                LATEX_BIN=hugelatex
-            else
-                ePiX_warn "  hugelatex not available, ignoring \"$1\" option"
-            fi
-            shift
-            ;;
-
-        -i|--interactive)
-            EPIX_STDOUT="$SYSTEM_STDOUT"
-            LATEX_INTERACT="errorstopmode"
-            shift
-            ;;
-
-        -n|--no-config) # do not use ~/.dvipsrc
-            export DVIPSRC="$SYSTEM_DEVNULL"
-            shift
-            ;;
-
-        -o|--output)
-            if [ "$2" = "${2%%.eps}.eps" ]; then
-                EPIX_OUTROOT="${2%%.eps}"
-
-            elif [ "$2" = "${2%%.pdf}.pdf" ]; then
-                ELAPS_PDF="yes"
-                EPIX_OUTROOT="${2%%.pdf}"
-
-            else
-                EPIX_OUTROOT="$2"
-            fi
-            ELAPS_USER_OUT="yes"
-            shift 2
-            ;;
-
-	--pst)
-	    EPIX_OPTS=("${EPIX_OPTS[@]}" "-DEPIX_FMT_PSTRICKS")
-	    shift; continue
-	    ;;
-
-	--tikz)
-	    EPIX_OPTS=("${EPIX_OPTS[@]}" "-DEPIX_FMT_TIKZ")
-	    shift; continue
-	    ;;
-
-	--eepic)
-	    EPIX_OPTS=("${EPIX_OPTS[@]}" "-DEPIX_FMT_EEPIC")
-	    shift; continue
-	    ;;
-
-        -P)
-            DVIPS_OPTS=("${DVIPS_OPTS[@]}" "-P$2")
-            shift 2
-            ;;
-
-        -P*)
-            DVIPS_OPTS=("${DVIPS_OPTS[@]}" "$1")
-            shift
-            ;;
-
-        -pdf|--pdf)
-            ELAPS_PDF="yes"
-            shift
-            ;;
-
-        -ps|--ps)
-            ELAPS_PS="yes"
-            ELAPS_PDF="no" # redundant; enforced by logic later
-            shift
-            ;;
-
-        --pstcol)
-            ELAPS_PSTCOL="pstcol,xcolor"
-            shift
-            ;;
-
-        -p|--pkg)
-            if [ "$2" != "${2#-}" ]; then
-                ePiX_warn "\"$1\" cannot be followed by \"$2\"; skipping"
-                shift 1
-            else
-                ELAPS_PKGS="$ELAPS_PKGS,$2"
-                shift 2
-            fi
-            ;;
-
-        -p*)
-            ELAPS_PKGS="$ELAPS_PKGS,${1#-p}"
-            shift
-            ;;
-
-        # Deliberately undocumented; run silently, no log file
-        -q|--quiet)
-            EPIX_STDOUT="$SYSTEM_DEVNULL"
-            EPIX_STDERR="$SYSTEM_DEVNULL"
-            LATEX_INTERACT="batchmode"
-            shift; continue
-            ;;
-
-        --size)
-            ELAPS_SIZE="$2"
-            shift 2
-            ;;
-
-        -V|--version|--gpl)
-            ePiX_version elaps
-            ePiX_license
-            exit 0
-	    ;;
-
-        -v|--verbose)
-            if [ -z "$2" ]; then 
-                echo "Please use -V for version"
-                exit 0
-            fi
-            EPIX_STDOUT="$SYSTEM_STDOUT"
-            shift
-            ;;
-
-        -vv)
-            echo "Discontinued option -vv; please use -v for verbose output"
-            exit 0
-            ;;
-
-
-        # pass other options to epix
-        -i*|-u|-x|-I|-L|-l|-W)
-	    EPIX_OPTS=("${EPIX_OPTS[@]}" "$1" "$2")
-            shift 2
-            ;;
-
-        -b) 
-            ePiX_warn "Skipping option \"$1 $2\""
-            shift 2
-            ;;
-
-        *)
-            EPIX_OPTS=("${EPIX_OPTS[@]}" "$1")
-            shift
-            ;;
-        esac
-    done
-
-    # Assume remaining parameters are input files
-    INFILE_COUNT=$#
-
-    if [ "$ELAPS_USER_OUT" = "yes" -a $INFILE_COUNT -gt 1 ]; then
-        shift $(($INFILE_COUNT - 1))
-        ePiX_warn "Output file specified with multiple input files. Skipping all but \"$*\""
-    fi
-
-    ELAPS_FILE_LIST=("$@")
-} # end of elaps_parse_options()
-
-
-function elaps_process_files() 
-{
-    if [ -z "$1" ]; then
-        ePiX_die "No input file specified"
-    fi
-
-    # file counts
-    local processed=0
-    local success=0
-    local failure=0
-
-    for EPIX_INFILE in "${ELAPS_FILE_LIST[@]}"; do
-
-        # sets EPIX_INROOT, EPIX_SUFFIX, EPIX_NOTFOUND, touches EPIX_LOGFILE
-        epix_parse_filename "$EPIX_INFILE" "$ELAPS_EXTENSIONS"
-        let processed=processed+1
-
-        if [ "$EPIX_NOTFOUND" = "yes" ]; then
-            let failure=failure+1
-            continue
-        fi
-
-        : ${EPIX_OUTROOT:=$EPIX_INROOT}
-        EPIX_OUTFILE="$EPIX_OUTROOT".eepic
-
-        # Create eepic file if necessary
-        if [ "$EPIX_SUFFIX" != "eepic" ]; then
-	    if [ -f "$EPIX_OUTFILE" ]; then # back up existing file
-		mv -f "$EPIX_OUTFILE"  "${EPIX_OUTFILE}~"
-	    fi
-
-            TMP_CMD=(@bindir@/epix "${EPIX_OPTS[@]}" -o "$EPIX_OUTFILE" "$EPIX_INFILE")
-
-            ePiX_command "${TMP_CMD[@]}"
-	    echo "---" | tee -a "$EPIX_LOGFILE" > "$EPIX_STDOUT"
-
-	    if [ "$EPIX_INFILE" -nt "$EPIX_OUTFILE" ]; then
-                ePiX_warn "\"${TMP_CMD[*]}\" failed"
-		unset EPIX_OUTFILE
-		unset EPIX_OUTROOT
-                let failure=failure+1
-                continue
-
-	    else
-		ln -s "$EPIX_OUTFILE" "$ELAPS_TEMP_EEPIC"
-	    fi
-
-        else # we were passed an eepic file name
-            ln -s "$EPIX_INFILE" "$ELAPS_TEMP_EEPIC"
-        fi
-
-        elaps_make_latex "$ELAPS_TEMP_LATEX" "$ELAPS_TEMP_EEPIC"
-
-        # Create $ELAPS_TEMP_PS
-        TMP_CMD=($LATEX_BIN -interaction=$LATEX_INTERACT "$ELAPS_TEMP_LATEX")
-
-        ePiX_command "${TMP_CMD[@]}"
-
-        if [ "$ELAPS_TEMP_LATEX" -nt "$ELAPS_TEMP_DVI" ]; then
-	    # Report informative (but fake) command line
-	    ePiX_warn "\"$LATEX_BIN -interaction=$LATEX_INTERACT ${EPIX_INROOT}.tex\" failed"
-	    rm -f "$ELAPS_TEMP_LATEX" "$ELAPS_TEMP_EEPIC" # clean temps
-	    unset EPIX_OUTFILE
-	    unset EPIX_OUTROOT
-            let failure=failure+1
-            continue
-	else
-	    echo "---" | tee -a "$EPIX_LOGFILE" > "$EPIX_STDOUT"
-        fi
-
-        TMP_CMD=(dvips "${DVIPS_OPTS[@]}" -f -o "$ELAPS_TEMP_PS" "$ELAPS_TEMP_DVI")
-
-        ePiX_command "${TMP_CMD[@]}"
-
-        if [ "$ELAPS_TEMP_DVI" -nt "$ELAPS_TEMP_PS" ]; then
-	    # Report informative (but fake) command line
-	    ePiX_warn "\"dvips ${DVIPS_OPTS[@]} -f -o ${EPIX_INROOT}.ps ${EPIX_INROOT}.dvi\" failed"
-
-	    unset EPIX_OUTFILE
-	    unset EPIX_OUTROOT
-            let failure=failure+1
-            continue
-	else
-	    echo "---" | tee -a "$EPIX_LOGFILE" > "$EPIX_STDOUT"
-        fi
-
-        if [ "$ELAPS_PS" = "yes" ]; then
-            # fix title; can't conveniently put sed command into ePiX_command
-            echo -n "sed \"s/$PROG-$PID/$EPIX_INROOT/g\" \"$ELAPS_TEMP_PS\"" \
-                | tee -a "$EPIX_LOGFILE" > "$EPIX_STDOUT"
-            echo " > \"$EPIX_OUTROOT.ps\"" \
-                | tee -a "$EPIX_LOGFILE" > "$EPIX_STDOUT"
-
-            sed "s/$PROG-$PID/$EPIX_INROOT/g" "$ELAPS_TEMP_PS" \
-                > "$EPIX_OUTROOT.ps"
-
-        else
-            # Create eps file,
-            TMP_CMD=("$PS2EPS" "$ELAPS_TEMP_PS")
-            ePiX_command "${TMP_CMD[@]}"
-
-            # fix title,
-            echo -n "sed \"s/$PROG-$PID/$EPIX_INROOT/g\" \"$ELAPS_TEMP_EPSI\""\
-                | tee -a "$EPIX_LOGFILE" > "$EPIX_STDOUT"
-            echo " > \"$EPIX_OUTROOT.eps\"" \
-                | tee -a "$EPIX_LOGFILE" > "$EPIX_STDOUT"
-
-            sed "s/$PROG-$PID/$EPIX_INROOT/g" \
-                "$ELAPS_TEMP_EPSI" > "$EPIX_OUTROOT.eps" &&
-            rm -f "$ELAPS_TEMP_EPSI"
-
-            # create pdf if requested,
-            if [ "$ELAPS_PDF" = "yes" ]; then
-                echo -n "grep -v \"^%%Orientation:\" \"$EPIX_OUTROOT.eps\"" \
-                    | tee -a "$EPIX_LOGFILE" > "$EPIX_STDOUT"
-                echo " | epstopdf --filter --outfile=\"$EPIX_OUTROOT.pdf\"" \
-                    | tee -a "$EPIX_LOGFILE" > "$EPIX_STDOUT"
-                # avoid ghostscript rotation bug
-                grep -v "^%%Orientation:" "$EPIX_OUTROOT.eps" \
-                    | epstopdf --filter --outfile="$EPIX_OUTROOT.pdf"
-                rm -f "$EPIX_OUTROOT.eps" # clean up eps
-            fi
-        fi
-
-        let success=success+1
-	unset EPIX_OUTFILE
-	unset EPIX_OUTROOT
-
-        # and clean up
-        rm -f "$ELAPS_TEMP_LATEX" "$ELAPS_TEMP_DVI" "$ELAPS_TEMP_PS" \
-            "$ELAPS_TEMP_EEPIC" "$PROG-$PID.aux" "$PROG-$PID.log"
-
-        echo -e "\nTranscript written on $EPIX_LOGFILE" > "$EPIX_STDOUT"
-
-    done # for EPIX_INFILE in $INFILE_LIST
-
-    if [ $processed -gt 1 ]; then
-        echo "$processed files processed: $success successfully, $failure failed" > "$EPIX_STDERR"
-    fi
-} # elaps_process_files()
-
-
-## Script proper starts here ##
-
-if [ $# -eq 0 ]; then 
-    ePiX_usage elaps $ELAPS_DOT_EXT
-    elaps_help
-    exit 0
-fi
-
-elaps_parse_options "$@"
-
-elaps_process_files "${ELAPS_FILE_LIST[@]}"
-
-exit 0
diff --git a/graphics/epix/enums.h b/graphics/epix/enums.h
deleted file mode 100644
index 1da13b67b1..0000000000
--- a/graphics/epix/enums.h
+++ /dev/null
@@ -1,52 +0,0 @@
-/* 
- * enums.h -- ePiX's user-visible enumeration types
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.0.23
- * Last Change: January 10, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#ifndef EPIX_ENUMS
-#define EPIX_ENUMS
-
-namespace ePiX {
-
-  enum epix_mark_type {PATH, CIRC, SPOT, RING, DOT, DDOT, PLUS, OPLUS, 
-		       TIMES, OTIMES, DIAMOND, UP, DOWN, BOX, BBOX, 
-		       HTICK, VTICK, TEXT};
-
-  enum epix_label_posn {none, c, r, tr, rt, t, tl, lt, l, bl, lb, b, br, rb};
-
-  enum epix_integral_type {LEFT, RIGHT, UPPER, LOWER, TRAP, MIDPT};
-
-  enum epix_field_type {SLOPE, DART, VECTOR};
-
-} // end of namespace
-
-#endif /* EPIX_ENUMS */
diff --git a/graphics/epix/epix-lib.sh b/graphics/epix/epix-lib.sh
deleted file mode 100644
index 422b2e7e16..0000000000
--- a/graphics/epix/epix-lib.sh
+++ /dev/null
@@ -1,179 +0,0 @@
-# Common functions for ePiX's shell scripts
-#
-PROG=$(basename $0)
-
-# global variables for all scripts
-EPIX_PID=$$
-
-# Needn't be secure
-EPIX_TEMPDIR=${PROG}-${EPIX_PID}
-
-# Caution: Common logfile name for all ${PROG} processes in cwd,
-# used until we've parsed command-line options. Will assign a
-# unique name once we have an input file name.
-EPIX_LOGFILE=${PROG}.log
-if [ -f "${EPIX_LOGFILE}" ]; then rm -f "${EPIX_LOGFILE}"; fi
-
-# These may need to be modified
-declare -r SYSTEM_STDOUT=/dev/stdout
-declare -r SYSTEM_STDERR=/dev/stderr
-declare -r SYSTEM_DEVNULL=/dev/null
-
-EPIX_STDOUT=$SYSTEM_DEVNULL
-EPIX_STDERR=$SYSTEM_STDERR
-
-declare EPIX_NOTFOUND
-
-declare LATEX_PKGS
-
-# in increasing order of severity
-function ePiX_msg {
-    echo -e "$PROG: $@" | tee -a "$EPIX_LOGFILE" > "$EPIX_STDOUT"
-}
-
-function ePiX_warn {
-    echo -e "$PROG: WARNING: $@" | tee -a "$EPIX_LOGFILE" >"$EPIX_STDERR"
-}
-
-function ePiX_fail {
-    echo -e "$PROG: WARNING: $@" | tee -a "$EPIX_LOGFILE" >"$EPIX_STDERR"
-    if [ "$EPIX_OUTROOT" = "$EPIX_INROOT" ]; then unset EPIX_OUTROOT; fi
-    let failure=failure+1
-}
-
-function ePiX_die {
-    echo -e "$PROG: ERROR: $@" | tee -a "$EPIX_LOGFILE" >"$EPIX_STDERR"
-    echo -e "Transcript written on ${EPIX_LOGFILE}\n"
-    exit 1;
-}
-
-# Echo command to stderr/stdout and logfile, then run command
-#
-function ePiX_command {
-    ePiX_msg "$@"
-    ("$@" 2>&1) | tee -a "$EPIX_LOGFILE" > "$EPIX_STDOUT"
-}
-
-
-# epix_parse_filename EPIX_INFILE MY_EXTENSIONS:
-#
-#   Attempt to decompose EPIX_INFILE into EPIX_INROOT.EPIX_SUFFIX, with
-#   EPIX_SUFFIX in MY_EXTENSIONS, then check for existence of file.
-#   If EPIX_INFILE has no suffix, the first match (if any) wins.
-#   If no file is found, EPIX_NOTFOUND="yes"
-#
-function epix_parse_filename {
-    EPIX_INFILE="$1"
-    shift;
-    MY_EXTENSIONS="$@"
-
-    unset EPIX_INROOT
-    unset EPIX_SUFFIX
-    unset EPIX_NOTFOUND
-
-    local FOUND_CT=0
-
-    # Check for recognized extension
-    for EXT in $MY_EXTENSIONS; do
-        TMP_ROOT="${EPIX_INFILE%.$EXT}"
-        if [ "$EPIX_INFILE" = "$TMP_ROOT.$EXT" ]; then
-            EPIX_INROOT="$TMP_ROOT"
-            EPIX_SUFFIX="$EXT"
-            break
-        fi
-    done
-
-    # None found; were we given just the root?
-    if [ -z "$EPIX_SUFFIX" ]; then
-        EPIX_INROOT="${EPIX_INFILE%%.}"
-
-        # Search for (and count) completions
-        for EXT in $MY_EXTENSIONS; do
-            if [ -f "$EPIX_INROOT.$EXT" ]; then
-                if [ $FOUND_CT -eq 0 ]; then # first match wins
-                    EPIX_INFILE="$EPIX_INROOT.$EXT"
-                    EPIX_SUFFIX="$EXT"
-                fi
-
-                let FOUND_CT=FOUND_CT+1
-            fi
-        done
-
-        # no match
-        if [ $FOUND_CT -eq 0 ]; then EPIX_NOTFOUND="yes"; fi
-
-    # Found suffix, check for input file
-    else
-        if [ -f "$EPIX_INFILE" ]; then
-            let FOUND_CT=FOUND_CT+1
-        else
-            EPIX_NOTFOUND="yes"
-        fi
-    fi # if $EPIX_SUFFIX=""
-
-    # initialize logfile
-    EPIX_LOGFILE="${EPIX_INROOT}_${EPIX_SUFFIX}.log"
-    if [ -f "$EPIX_LOGFILE" ]; then rm "$EPIX_LOGFILE"; fi
-    touch "$EPIX_LOGFILE"
-
-    # Print status messages
-    ePiX_msg "Processing $EPIX_INFILE:"
-
-    if [ $FOUND_CT -eq 0 ]; then
-        ePiX_warn "  No completion of \"$EPIX_INROOT\" found"
-
-    elif [ $FOUND_CT -ge 2 ]; then
-        ePiX_warn "  Found $FOUND_CT completions of \"$EPIX_INROOT\", using $EPIX_INFILE"
-
-    elif [ "$EPIX_NOTFOUND" = "yes" ]; then
-        ePiX_warn "  \"$EPIX_INFILE\" not found"
-    fi
-} # end of epix_parse_filename
-
-
-# Get extra LaTeX package names from file
-function ePiX_usepackages()
-{
-    TMP_PKGS=$(grep "%% usepackages " $1)
-    LATEX_PKGS=${TMP_PKGS#"%% usepackages "}
-}
-
-function ePiX_usage()
-{
-cat <<HELP
-Usage: $1 [options] <file(s)>[$2]
-
-HELP
-}
-
-
-function ePiX_version()
-{
-cat <<VERSION
-$1 (ePiX 1.2.1)
-
-Copyright (C) 2007  Andrew D. Hwang
-
-VERSION
-}
-
-function ePiX_license()
-{
-cat <<LICENSE
-License GPLv2+: GNU GPL version 2 or later <http://gnu.org/licenses/gpl.html>
-ePiX is free software: you are free to change and redistribute it.
-There is NO WARRANTY, to the extent permitted by law.
-
-LICENSE
-}
-
-function ePiX_bugreport()
-{
-    my_decode="tr '[a-m][n-z]' '[n-z][a-m]'" # Mac OS X has no 'rot'
-    SPAMMY="<$(echo nujnat|$my_decode)@$(echo zngupf|$my_decode)."
-    SPAMMY="${SPAMMY}$(echo ubylpebff|$my_decode).$(echo rqh|$my_decode)>"
-
-cat <<BUG
-Please report bugs to $SPAMMY
-BUG
-}
\ No newline at end of file
diff --git a/graphics/epix/epix.1.in b/graphics/epix/epix.1.in
deleted file mode 100644
index 45c5085666..0000000000
--- a/graphics/epix/epix.1.in
+++ /dev/null
@@ -1,50 +0,0 @@
-.TH ePiX 1 "January 06, 2004"
-.LO 1
-.fi
-.SH NAME
-ePiX \- Utilities for creating mathematically accurate figures
-.SH SYNOPSIS
-.in +7n
-.ti -7n
-epix  [options] file(s)[.xp]
-.P
-elaps [options] file(s)[.eepic|.xp]
-.P
-laps  [options] file(s)[.tex]
-.P
-flix  [options] file[.flx]
-.in -7n
-.P 
-All scripts have built-in (terse and verbose) help.
-.P
-.SH ONLINE RESOURCES
-Project page:
-
-	http://mathcs.holycross.edu/~ahwang/current/ePiX.html
-
-Public CVS server:
-
-	https://savannah.nongnu.org/projects/epix
-
-CTAN:
-
-	http://www.ctan.org/tex-archive/graphics/epix
-
-Mailing lists:
-
-	http://lists.nongnu.org/mail/?group=epix
-
-.SH DOCUMENTATION
-Sample files and an extensive tutorial introduction/reference manual
-come with the source code. Please look in
-.B @docdir@
-for these materials. The documentation can be downloaded separately.
-Please consult the project page. 
-
-.SH "AUTHOR"
-.nf
-.na
-Andrew D. Hwang (ahwang -at- mathcs -dot- holycross -dot- edu)
-Department of Mathematics and Computer Science
-College of the Holy Cross
-Worcester, MA 01610-2395, USA
diff --git a/graphics/epix/epix.el.in b/graphics/epix/epix.el.in
deleted file mode 100644
index 19d69c2155..0000000000
--- a/graphics/epix/epix.el.in
+++ /dev/null
@@ -1,1068 +0,0 @@
-;;; epix.el --- A major mode for working with ePiX files.
-
-;; Copyright (C) 2002, 2007 Jay Belanger
-
-;; Author: Jay Belanger
-;; Maintainer: Jay Belanger <belanger@truman.edu>
-
-;; Keywords: epix
-
-;; This program is free software; you can redistribute it and/or
-;; modify it under the terms of the GNU General Public License as
-;; published by the Free Software Foundation; either version 2 of
-;; the License, or (at your option) any later version.
-;;          
-;; This program is distributed in the hope that it will be
-;; useful, but WITHOUT ANY WARRANTY; without even the implied
-;; warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
-;; PURPOSE.  See the GNU General Public License for more details.
-;;          
-;; You should have received a copy of the GNU General Public
-;; License along with this program; if not, write to the Free
-;; Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
-;; MA 02111-1307 USA
-;;
-;;
-;; Please send suggestions and bug reports to <belanger@truman.edu>. 
-
-;;; Commentary:
-
-;; Quick intro
-
-;; epix-mode is an extension of c++-mode with some extra commands for 
-;; editing ePiX files.  The commands are
-;;  C-cC-x    run epix on the current file (x for epiX, I guess)
-;;  C-cC-l    run elaps on the current file (l for eLaps)
-;; The output of the run can be seen by
-;;  C-cC-r    show the output buffer  (r for Results)
-;; and in case of errors, they can be jumped to, in sequence, with
-;;  C-c`      go to the next error
-;; The file created by elaps can be viewed with
-;;  C-cC-v    view the output file  (v for View)
-;; By default, the output will be encapsulated postscript.  This
-;;  can be changed by changing the customizable variable
-;;  `epix-elaps-output-format'.  This can be changed for the current
-;;  emacs session with `C-cC-r'.
-;; An unwanted ePiX process can be killed with
-;;  C-cC-k
-;; A reminder of some ePiX commands will be given with 
-;;  C-cC-h    get help on ePiX
-;; If the file extension is .flx, then there will also be the commands
-;;  C-cC-f    run flix on the current file
-;;  C-cC-w    view the mng file.
-;;
-;; To install, put both epix.el and epix.info in the emacs load path.
-;; Adding the lines
-;;   (autoload 'epix-mode "epix" "ePiX editing mode" t)
-;;   (autoload 'flix-mode "epix" "flix editing mode" t)
-;; to your .emacs file will ensure that the command is always available.
-;; Adding the lines
-;;   (setq auto-mode-alist (cons '("\\.xp" . epix-mode) auto-mode-alist))
-;;   (setq auto-mode-alist (cons '("\\.flx" . flix-mode) auto-mode-alist))
-;; will ensure that any file ending in .xp or .flx will be recognized as 
-;; an ePiX file or flix file, and started in the proper mode.
-;;
-;; Some variables that the user may wish to change (via customization
-;; or otherwise) are
-;;  epix-postscript-viewer  (default "gv")
-;;     The command used to view postscript files.
-;;  epix-mng-viewer  (default "display")
-;;     The command used to view mng files.
-;;  epix-mark-files-as-epix (default nil)
-;;     Setting this to t will ensure that any file in ePiX mode
-;;     will be marked with a /* -*-ePiX-* */ so that next 
-;;     time it is opened, it will be put in epix-mode.  (This isn't necessary 
-;;     if auto-mode-alist is set up properly.)
-;;  epix-mark-files-as-flix (default nil)
-;;     Setting this to t will ensure that any file in flix mode
-;;     will be marked with a /* -*-flix-* */ so that next 
-;;     time it is opened, it will be put in flix-mode.  (This isn't necessary 
-;;     if auto-mode-alist is set up properly.)
-;;  epix-insert-template-in-empty-buffer (default nil)
-;;     Setting this to t will cause any empty buffer which is put in
-;;     ePiX mode to have a skeleton of commands inserted into it.
-;;     The skeleton can be inserted at any time with the command
-;;     epix-insert-template
-;;  epix-template
-;;     This is the skeleton which will inserted.
-;;     By default, it is
-;;       #include \"epix.h\"
-;;       using namespace ePiX;
-;;
-;;       int main()
-;;       {
-;;         picture(P(,), P(,), \"\");
-;;
-;;         begin();
-;;
-;;         end();
-;;       }
-;;
-;;  epix-flix-template
-;;     This is the skeleton which will inserted.
-;;     By default, it is
-;;       #include \"epix.h\"
-;;       using namespace ePiX;
-;;
-;;       int main(int argc, char* argv[])
-;;       {
-;;        if (argc == 3)
-;;         {
-;;          char* arg;
-;;          double temp1, temp2;
-;;          temp1=strtod(argv[1], &arg);
-;;          temp2=strtod(argv[2], &arg);
-;;
-;;          tix()=temp1/temp2;
-;;         }
-;;         picture(P(,), P(,), \"\");
-;;
-;;         begin();
-;;
-;;         end();
-;;       }
-
-;;; Require
-(require 'cc-mode)
-
-;;; Customization
-
-(defgroup epix nil
-  "ePiX mode"
-  :prefix "epix-"
-  :tag    "ePiX")
-
-(defcustom epix-elaps-output-format 'eps
-  "The output format for elaps."
-  :group 'epix
-  :type '(choice (const :tag "EPS" eps)
-                 (const :tag "PS" ps)
-                 (const :tag "PDF" pdf)))
-
-(defcustom epix-info-file "@docdir@/epix.info.bz2"
-  "The info file for ePiX."
-  :group 'epix
-  :type 'file)
-
-(defcustom epix-mark-files-as-epix nil
-  "Non-nil means to make sure that any ePiX file is marked as such."
-  :group 'epix
-  :type 'boolean)
-
-(defcustom epix-mark-files-as-flix nil
-  "Non-nil means to make sure that any flix file is marked as such."
-  :group 'epix
-  :type 'boolean)
-
-(defcustom epix-template 
-"#include \"epix.h\"
-using namespace ePiX;
-
-int main()
-{
-picture(P(,), P(,), \"\");
-
-begin();
-
-end();
-}
-"
-  "The information to enter into an empty ePiX buffer."
-  :group 'epix
-  :type 'string)
-
-(defcustom epix-template-start "P("
-  "The place to start the point in the template."
-  :group 'epix
-  :type 'string)
-
-(defcustom epix-flix-template
-"#include \"epix.h\"
-using namespace ePiX;
-
-int main(int argc, char* argv[])
-{
-  if (argc == 3)
-    {
-      char* arg;
-      double temp1(strtod(argv[1], &arg)), temp2(strtod(argv[2], &arg));
-
-      tix()=temp1/temp2;
-    }
-picture(P(,), P(,), \"\");
-
-begin();
-
-end();
-}
-"
-  "The information to enter into an empty ePiX buffer."
-  :group 'epix
-  :type 'string)
-
-(defcustom epix-flix-template-start "P("
-  "The place to start the point in the template."
-  :group 'epix
-  :type 'string)
-
-(defcustom epix-insert-template-in-empty-buffer nil
-  "Non-nil means to insert the template into an empty ePiX buffer."
-  :group 'epix
-  :type 'boolean)
-
-(defcustom epix-command-name "epix"
-  "The name of the ePiX program."
-  :group 'epix
-  :type 'string)
-
-(defcustom epix-command-args ""
-  "Arguments to pass to epix"
-  :group 'epix
-  :type 'string)
-
-(defcustom epix-elaps-command-name "elaps"
-  "The name of the elaps program."
-  :group 'epix
-  :type 'string)
-
-(defcustom epix-elaps-command-args ""
-  "Arguments to pass to elaps"
-  :group 'epix
-  :type 'string)
-
-(defcustom epix-flix-command-name "flix"
-  "The name of the flix program."
-  :group 'epix
-  :type 'string)
-
-(defcustom epix-flix-command-args ""
-  "Arguments to pass to flix"
-  :group 'epix
-  :type 'string)
-
-(defcustom epix-postscript-viewer "gv"
-  "The name of the program used to view postscript files."
-  :group 'epix
-  :type 'string)
-
-(defcustom epix-pdf-viewer "xpdf"
-  "The name of the program used to view pdf files."
-  :group 'epix
-  :type 'string)
-
-(defcustom epix-mng-viewer "display"
-  "The name of the program used to view mng files."
-  :group 'epix
-  :type 'string)
-
-;;; Some utility variables
-
-(defvar epix-output-buffer nil)
-(make-variable-buffer-local 'epix-output-buffer)
-
-(defvar epix-error-point nil)
-(make-variable-buffer-local 'epix-error-point)
-
-(defvar epix-elaps-output-format-list
-  '((ps " -ps" ".ps")
-    (pdf " -pdf" ".pdf")
-    (eps "" ".eps")))
-
-(defun epix-change-elaps-output-format ()
-  "Change the output format for elaps."
-  (interactive)
-  (let ((newformat
-         (read-string 
-          "New output format (ps,eps,pdf): ")))
-    (cond
-     ((string= newformat "pdf")
-      (setq epix-elaps-output-format 'pdf))
-     ((string= newformat "ps")
-      (setq epix-elaps-output-format 'ps))
-     ((string= newformat "eps")
-      (setq epix-elaps-output-format 'eps))
-     (t
-      (message "Not an acceptable format.")))))
-
-;;; Functions to run epix and friends
-
-(defun epix-check-process ()
-  "See if there is a process associated with the output buffer.
-If there is and it is running, offer to kill it."
-  (let ((epp)
-        (epix-proc (get-buffer-process epix-output-buffer)))
-    (if epix-proc (setq epp t) (setq epp nil))
-    (if (and 
-         epix-proc
-         (y-or-n-p "There is an ePiX process running.  Kill it? "))
-        (progn
-          (kill-process epix-proc)
-          (setq epp nil)))
-    epp))
-
-(defun epix-kill-process ()
-  "Kill any epix process running."
-  (interactive)
-  (let ((epix-proc (get-buffer-process epix-output-buffer)))
-    (if (and
-         epix-proc
-         (y-or-n-p "Really kill ePiX process? "))
-        (kill-process epix-proc))))
-         
-
-(defun epix-check-buffer ()
-  "See if the buffer has been modified since it was last saved.
-If it has been, offer to save it."
-  (if (and
-       (buffer-modified-p)
-       (y-or-n-p (concat "Save file " (buffer-file-name) "?")))
-      (save-buffer)))
-
-(defun epix-run-command (command file &optional args)
-  "Create a process to run COMMAND on FILE.
-Return the new process."
-  (let ((buffer epix-output-buffer))
-    (epix-check-buffer)
-    (unless (epix-check-process)
-      (set-buffer (get-buffer-create buffer))
-      (setq epix-error-point nil)
-      (erase-buffer)
-      (insert "Running `" command "' on `" file "\n")
-      (message "Type `C-c C-r' to display results of compilation.")
-      (let ((process)
-            (cmd))
-        (if (not (string= args ""))
-            (setq cmd 
-                  (append 
-                   (list 'start-process "ePiX" buffer "/bin/sh" command)
-                   (split-string args)
-                   (list file)))
-          (setq cmd (list 'start-process "ePiX" buffer "/bin/sh" command file)))
-        (setq process (eval cmd))
-        (set-process-filter process 'epix-command-filter)
-        (set-process-sentinel process 'epix-command-sentinel)
-        (set-marker (process-mark process) (point-max))
-        process))))
-  
-(defun epix-command-sentinel (process event)
-  (when (string-match "finished" event)
-    (message "ePiX process finished")
-    (set-buffer epix-output-buffer)
-    (goto-char (point-max))
-    (insert "\nePiX process finished\n")))
-
-(defun epix-command-filter (process string)
-  "Filter to process normal output."
-  (save-excursion
-    (set-buffer (process-buffer process))
-    (save-excursion
-      (goto-char (process-mark process))
-      (insert-before-markers string)
-      (set-marker (process-mark process) (point))))
-  (if (string-match "Compilation failed" string)
-      (message (concat "ePiX errors in `" (buffer-name)
-                       "'. Use C-c ` to display."))))
-(defun epix-run-epix ()
-  "Run epix on the current file."
-  (interactive)
-  (let ((file (file-name-nondirectory (buffer-file-name))))
-    (epix-run-command epix-command-name file epix-command-args)))
-
-(defun epix-run-elaps ()
-  "Run elaps on the current file."
-  (interactive)
-  (let ((file (file-name-nondirectory (buffer-file-name))))
-    (epix-run-command epix-elaps-command-name file 
-                      (concat
-                       epix-elaps-command-args
-                       (nth 1 (assoc epix-elaps-output-format
-                                     epix-elaps-output-format-list))))))
-
-(defun epix-run-flix ()
-  "Run flix on the current file."
-  (interactive)
-  (let ((file (file-name-nondirectory (buffer-file-name))))
-    (epix-run-command epix-flix-command-name file epix-flix-command-args)))
-  
-(defun epix-view-elaps-output ()
-  "View the eps output of the file."
-  (interactive)
-  (let ((filename (file-name-nondirectory (buffer-file-name)))
-        (file nil)
-        (extension (nth 2 (assoc epix-elaps-output-format
-                                 epix-elaps-output-format-list))))
-    (if (file-name-extension filename)
-        (setq file (concat (file-name-sans-extension filename) extension)))
-    (unless (file-exists-p file)
-      (setq file (concat filename extension)))
-    (message file)
-    (if (file-exists-p file)
-        (call-process 
-         (if (eq epix-elaps-output-format 'pdf)
-             epix-pdf-viewer
-           epix-postscript-viewer)
-         nil epix-output-buffer nil file)
-      (message (concat "No file " file ".  Run elaps first.")))))
-
-(defun epix-view-mng ()
-  "View the mng output of the file."
-  (interactive)
-  (let ((filename (file-name-nondirectory (buffer-file-name)))
-        (file nil))
-    (if (file-name-extension filename)
-        (setq file (concat (file-name-sans-extension filename) ".mng")))
-    (unless (file-exists-p file)
-      (setq file (concat filename ".mng")))
-    (message file)
-    (if (file-exists-p file)
-        (call-process epix-mng-viewer nil epix-output-buffer nil file)
-      (message (concat "No file " file ".  Run flix first.")))))
-
-;;; Dealing with output
-
-(defun epix-show-output-buffer ()
-  "Show the epix output buffer."
-  (interactive)
-  (let ((buf (current-buffer)))
-    (if (get-buffer epix-output-buffer)
-        (progn
-          (pop-to-buffer epix-output-buffer t)
-          (bury-buffer buf)
-	  (goto-char (point-max))
-	  (recenter (/ (window-height) 2))
-	  (pop-to-buffer buf))
-      (message "No output buffer."))))
-
-(defun epix-find-error (arg)
-  "Go to the next ePiX error."
-  (interactive "P")
-  (if arg 
-      (save-excursion
-        (set-buffer epix-output-buffer)
-        (setq epix-error-point nil)))
-  (let ((ln)
-        (col)
-        (epix-error-end)
-        (buf (current-buffer)))
-    (switch-to-buffer-other-window epix-output-buffer)
-    (widen)
-    (if epix-error-point
-        (goto-char epix-error-point)
-      (goto-char (point-min)))
-    (if (re-search-forward ":\\([0-9]+\\):\\([0-9]+\\):" (point-max) t)
-        (progn
-          (setq epix-error-point (point))
-          (setq ln (string-to-int (match-string 1)))
-          (setq col (string-to-int (match-string 2)))
-          (save-excursion
-            (if (re-search-forward ":[0-9]+:[0-9]+:" (point-max) t)
-                (setq epix-error-end (line-beginning-position))
-              (if (search-forward "Compilation failed" (point-max) t)
-                  (setq epix-error-end (line-beginning-position))
-                (setq epix-error-end (point-max)))))
-          (recenter)
-          (beginning-of-line)
-          (if (looking-at "epix: Compiling...")
-              (forward-char (length "epix: Compiling...")))
-          (narrow-to-region (point) epix-error-end)
-          (switch-to-buffer-other-window buf)
-          (goto-line ln)
-          (move-to-column col))
-      (switch-to-buffer-other-window buf)
-      (message "No more errors."))))
-
-
-;;; Auxiliary functions
-
-(defun epix-mark-file-as-epix ()
-  "Mark the file as an ePiX buffer.
-The next time the file is loaded, it will then be in ePiX mode"
-  (interactive)
-  (save-excursion
-    (goto-char (point-min))
-    (unless (looking-at ".*-\\*-ePiX-\\*-")
-      (insert "/* -*-ePiX-*- */\n"))))
-
-(defun epix-mark-file-as-flix ()
-  "Mark the file as a flix buffer.
-The next time the file is loaded, it will then be in flix mode"
-  (interactive)
-  (save-excursion
-    (goto-char (point-min))
-    (unless (looking-at ".*-\\*-flix-\\*-")
-      (insert "/* -*-flix-*- */\n"))))
-
-(defun epix-insert-epix-template ()
-  "Insert a template."
-  (interactive)
-  (if (looking-at ".*-\\*-ePiX-\\*-")
-      (forward-line 1))
-  (let ((beg (point)))
-    (insert epix-template)
-    (indent-region beg (point) nil)
-    (goto-char beg)
-    (search-forward epix-template-start)))
-
-(defun epix-insert-flix-template ()
-  "Insert a template."
-  (interactive)
-  (if (looking-at ".*-\\*-flix-\\*-")
-      (forward-line 1))
-  (let ((beg (point)))
-    (insert epix-flix-template)
-    (indent-region beg (point) nil)
-    (goto-char beg)
-    (search-forward epix-flix-template-start)))
-
-(defun epix-help ()
-  "Read an ePiX info file"
-  (interactive)
-  (info-other-window epix-info-file))
-
-(require 'info-look)
-(info-lookup-maybe-add-help
- :mode 'epix-mode
- :ignore-case nil
- :regexp "[_a-zA-Z0-9./+-]+"
- :doc-spec (list
-            (list
-             (concat "("
-                     epix-info-file
-                     ")Function Index"))))
-; nil
-; "^ -+ [^:]+:[ ]+\\(\\[[^=]*=[ ]+\\)?" nil)))
-
-
-;;; To take care of the different types
-
-(defvar epix-preface
-"int[ \t\n]*main()[ \t\n]*{")
-
-(defvar epix-flix-preface
-"int main(int argc, char* argv[])
-{
-  if (argc == 3)
-    {
-      char* arg;
-      double temp1(strtod(argv[1], &arg)), temp2(strtod(argv[2], &arg));
-
-      tix()=temp1/temp2;
-    }")
-
-(defun epix-epix-to-flix ()
-  "Change some of the buffer to accomodate flix."
-  (interactive)
-  (save-excursion
-    (goto-char (point-min))
-    (replace-regexp "-\\*-ePiX-\\*-" "-*-flix-*-")
-    (goto-char (point-min))
-    (replace-regexp epix-preface epix-flix-preface))
-  (flix-mode))
-
-;;; ePiX mode
-
-(defvar epix-mode-map nil
-  "The keymap for ePiX mode.")
-
-(if epix-mode-map
-     nil
-   (let ((map (copy-keymap c++-mode-map)))
-     (define-key map "\C-c\C-k" 'epix-kill-process)
-     (define-key map "\C-c\C-x" 'epix-run-epix)
-     (define-key map "\C-c\C-l" 'epix-run-elaps)
-     (define-key map "\C-c\C-r" 'epix-show-output-buffer)
-     (define-key map "\C-c\C-v" 'epix-view-elaps-output)
-     (define-key map "\C-c\C-r" 'epix-change-elaps-output-format)
-     (define-key map "\C-c\C-h" 'epix-help)
-     (define-key map "\C-c\C-i" 'info-complete-symbol)
-     (define-key map "\C-c`" 'epix-find-error)
-     (setq epix-mode-map map)))
-
-(easy-menu-define epix-mode-menu epix-mode-map
-  "ePiX mode menu"
-  '("ePiX"
-    ["Run ePiX" epix-run-epix t]
-    ["Run elaps" epix-run-elaps t]
-    ["View the eps file" epix-view-elaps-output t]
-    ["Change the output format" epix-change-elaps-output-format t]
-    ["Get help on ePiX" epix-help t]
-    ["Show the output buffer" epix-show-output-buffer t]))
-
-(define-derived-mode epix-mode c++-mode "ePiX"
-  "ePiX mode is a major mode for editing ePiX files.
-It is C++ mode with a couple of extra commands:
-
-Run epix on the file being visited:   C-cC-x
-Run elaps on the file being visited:  C-cC-l
-View the output:                      C-cC-v
-Change the output format:             C-cC-r
-Get help on ePiX:                     C-cC-h
-Complete the ePiX symbol under point: C-cTAB
-
-In the case of errors:
-Go to the (next) error:               C-c`
-
-SUMMARY OF EPIX COMMANDS
-------------------------
-
-Preamble
---------
-picture(P(a,b), P(c,d), \"height[dim] x width dim\");
-
-The actual picture commands need to be between
-begin();
-and
-end();
-
-Colors
-------
-RGB(r,g,b);
-Red(d);    Green(d);    Blue(d);    Black(d);      White(d);
-
-CMY(c,m,y);
-Cyan(d);   Magenta(d);  Yellow(d);  CMY_Black(d);  CMY_White(d);
-
-CMYK(c,m,y,k);
-CyanK(d);  MagentaK(d); YellowK(d); CMYK_Black(d); CMYK_White(d);
-
-Primary densities interpolate linearly between anti-saturation (-1),
-no color(0), full saturation (1), and saturation on all channels (2 
-or -2). Densities are meaningful mod 4. Colors can be superposed, 
-blended, inverted, filtered, and scaled.
-
-Line and fill styles
------------
-Widths:  plain([Color]); bold([Color]); bbold([Color]);
-         pen(Color, [len]);  pen(len);
-         base(Color, [len]); base(len);
-Styles:  solid(); dashed(); dotted();
-         line_style(string);
-Fill:    fill(Color); fill(bool); nofill();
-
-The base pen draws an underlayer/border if wider than the line pen.
-line_style accepts a WYSIWYG pattern of spaces, dashes, and periods.
-
-Lines
------
-line(P(a,b),P(c,d));
-Line(P(a,b),P(c,d));
-Line(P(a,b),m);
-
-The line goes from one point to the other,
-the Line is that part of the entire line which lies inside the
-bounding box.
-
-Polygons
---------
-triangle(P(a,b),P(c,d),P(e,f));
-rect(P(a,b),P(c,d));
-quad(P(a,b),P(c,d),P(e,f),P(g,h));
-
-Axes
-----
-h_axis(P(a,b),P(c,d),n);
-v_axis(P(a,b),P(c,d),n);
-h_log_axis(P(a,b),P(c,d),n);
-v_log_axis(P(a,b),P(c,d),n);
-
-h_axis_labels(P(a,b),P(c,d),n,P(u,v));
-v_axis_labels(P(a,b),P(c,d),n,P(u,v));
-h_log_axis_labels(P(a,b),P(c,d),n,P(u,v));
-v_log_axis_labels(P(a,b),P(c,d),n,P(u,v));
-
-h_axis_masklabels(P(a,b),P(c,d),n,P(u,v));
-v_axis_masklabels(P(a,b),P(c,d),n,P(u,v));
-h_log_axis_masklabels(P(a,b),P(c,d),n,P(u,v));
-v_log_axis_masklabels(P(a,b),P(c,d),n,P(u,v));
-
-The axis commands will put n+1 evenly spaced tick marks on the line. 
-The labeling commands will put n+1 evenly spaced labels,
-masklabels will put the label on an opaque white rectangle.
-
-Points
-------
-spot(P(a,b)); dot(P(a,b)); ddot(P(a,b)); box(P(a,b)); bbox(P(a,b));
-circ(P(a,b));
-ring(P(a,b));
-
-spot, dot and ddot are various sized (in decreasing order) dots.
-A circ is a small circle with white interior.
-A ring is a small circle with transparent interior.
-
-Arrows
-------
-arrow(P(a,b),P(c,d));
-dart(P(a,b),P(c,d));
-
-A dart is a small arrow.
-
-Labels
-------
-label(P(a,b),P(u,v),\"label\");
-label(P(a,b),\"label\");
-label(P(a,b),P(u,v),\"label\",posn);
-masklabel(P(a,b),P(u,v),\"label\");
-masklabel(P(a,b),\"label\");
-masklabel(P(a,b),P(u,v),\"label\",posn);
-
-These commands put a label at the point P(a,b).
-P(u,v) is an offset (in true points).
-posn will specify the position of the label relative to the basepoint,
-and can be c(enter), l(eft), r(ight), t(op), b(ottom) or an
-appropriate pair.
-
-Text attributes
----------------
-label_color(Color); label_mask(Color); label_pad(len);
-label_border(Color, [len]); label_border(len); no_label_border();
-font_size(LaTeX size);  font_face(face);
-label_angle(theta);
-
-The LaTeX size is a string such as \"Huge\" or \"scriptsize\". The
-font face is one of \"rm\" (default), \"bf\", \"sc\", or \"tt\".
-
-Curves
-------
-ellipse(P(a,b),P(c,d),P(e,f),tmin,tmax);
-circle(P(a,b),r);
-circle(P(a,b),P(c,d),P(e,f));
-
-Ellipse draws (a,b)+Cos(t)*(c,d)+Sin(t)*(e,f) for tmin <= t <= tmax.
-
-Arcs
-----
-arc(P(a,b),r,theta1,theta2);
-arc_arrow(P(a,b),r,theta1,theta2);
-
-The angles are measured in current angle units (radians by default).
-
-Splines
--------
-spline(P(a,b),P(c,d),P(e,f));
-spline(P(a,b),P(c,d),P(e,f),P(g,h));
-
-Plotting
---------
-plot(f,a,b,n);
-
-This plots the function f from a to b using n+1 evenly spaced points. 
-If f is P-valued, then this will be a parametric plot.
-
-Calc plotting
--------------
-plot(Deriv(f),a,b,n);
-plot(Integral(f),a,b,n);
-plot(Integral(f),x0,a,b,n);
-
-plot(Deriv(f)...) plots f'.
-plot(Integral(f)...) plots int_a^x f (or if x0 is given, int_x0^x f).
-
-Tangents
---------
-tan_line(f,t);
-envelope(f,t_min,t_max,n);
-tan_field(f,t_min,t_max,n);
-
-tan_line will plot the tangent Line to the graph.
-envelope will plot n+1 tangent Lines.
-tan_field will plot n+1 tangent vectors.
-Here, as above, f can be P-valued.
-
-Vector fields
--------------
-slope_field(F,P(a,b),P(c,d),n1,n2);
-dart_field(F,P(a,b),P(c,d),n1,n2);
-vector_field(F,P(a,b),P(c,d),n1,n2);
-
-The slope_field elements will have fixed length, no arrows.
-The dart_field elements will have fixed length, small arrows.
-The vector_field elements will have true length.
-
-Fractals
---------
-const int seed[] = {N, k1, k2, k3, ... , kn};
-fractal(P(a,b),P(c,d),D,seed);
-
-seed determines a path made up of equal space line segments, each of
-which can point in the direction 2 pi k/N.  Each integer after N in seed
-will specify the direction of the next segment.
-fractal will recursively replace each segment in seed by a copy of the
-original, up to a depth of D, and draw it from P(a,b) to P(c,d)."
-  (setq font-lock-defaults
-        '((c++-font-lock-keywords 
-           c++-font-lock-keywords-1
-           c++-font-lock-keywords-2 
-           c++-font-lock-keywords-3)
-          nil nil ((?_ . "w")) beginning-of-defun
-          (font-lock-mark-block-function . mark-defun)))
-  (setq epix-output-buffer (concat "*" (buffer-file-name) " output*"))
-  (use-local-map epix-mode-map)
-  (if (and epix-insert-template-in-empty-buffer
-           (= (point-min) (point-max)))
-      (progn
-        (if epix-mark-files-as-epix
-            (epix-mark-file-as-epix))
-        (epix-insert-epix-template))
-    (if epix-mark-files-as-epix
-        (epix-mark-file-as-epix)))
-  (run-hooks 'epix-mode-hook))
-
-;;; flix mode
-
-(defvar flix-mode-map nil
-  "The keymap for flix mode.")
-
-(if flix-mode-map
-     nil
-   (let ((map (copy-keymap c++-mode-map)))
-     (define-key map "\C-c\C-k" 'epix-kill-process)
-     (define-key map "\C-c\C-x" 'epix-run-epix)
-     (define-key map "\C-c\C-l" 'epix-run-elaps)
-     (define-key map "\C-c\C-r" 'epix-show-output-buffer)
-     (define-key map "\C-c\C-v" 'epix-view-elaps-output)
-     (define-key map "\C-c\C-h" 'epix-help)
-     (define-key map "\C-c`" 'epix-find-error)
-     (define-key map "\C-c\C-f" 'epix-run-flix)
-     (define-key map "\C-c\C-w" 'epix-view-mng)
-     (setq flix-mode-map map)))
-
-(easy-menu-define flix-mode-menu flix-mode-map
-  "flix mode menu"
-  '("flix"
-    ["Run flix" epix-run-flix t]
-    ["View the mng file" epix-view-mng t]
-    ["Get help on flix/ePiX" epix-help t]
-    ["Show the output buffer" epix-show-output-buffer t]
-    ("ePiX"
-     ["Run ePiX" epix-run-epix t]
-     ["Run elaps" epix-run-elaps t]
-     ["View the eps file" epix-view-elaps-output t])))
-
-(define-derived-mode flix-mode c++-mode "flix"
-  "flix mode is a major mode for editing flix files.
-It is C++ mode with a couple of extra commands:
-
-Run flix on the file being visited:   C-cC-f
-View the mng output:                  C-cC-w
-Get help on flix:                     C-cC-h
-
-Since a flix file is a valid ePiX file, the
-following commands are also available:
-Run epix on the file being visited:   C-cC-x
-Run elaps on the file being visited:  C-cC-l
-View the postscript output:           C-cC-v
-In the case of errors:
-Go to the (next) error:               C-c`
-
-An ePiX file isn't necessarily a flix file,
-but the command
-M-x epix-epix-to-flix
-will try to turn an ePiX file into a flix file.
-
-SUMMARY OF FLIX/EPIX COMMANDS
-------------------------
-
-Preamble
---------
-picture(P(a,b), P(c,d), \"height[dim] x width dim\");
-
-The actual picture commands need to be between
-begin();
-and
-end();
-
-Colors
-------
-RGB(r,g,b);
-Red(d);    Green(d);    Blue(d);    Black(d);      White(d);
-
-CMY(c,m,y);
-Cyan(d);   Magenta(d);  Yellow(d);  CMY_Black(d);  CMY_White(d);
-
-CMYK(c,m,y,k);
-CyanK(d);  MagentaK(d); YellowK(d); CMYK_Black(d); CMYK_White(d);
-
-Primary densities interpolate linearly between anti-saturation (-1),
-no color(0), full saturation (1), and saturation on all channels (2 
-or -2). Densities are meaningful mod 4. Colors can be superposed, 
-blended, inverted, filtered, and scaled.
-
-Line and fill styles
------------
-Widths:  plain([Color]); bold([Color]); bbold([Color]);
-         pen(Color, [len]);  pen(len);
-         base(Color, [len]); base(len);
-Styles:  solid(); dashed(); dotted();
-         line_style(string);
-Fill:    fill(Color); fill(bool); nofill();
-
-The base pen draws an underlayer/border if wider than the line pen.
-line_style accepts a WYSIWYG pattern of spaces, dashes, and periods.
-
-Lines
------
-line(P(a,b),P(c,d));
-Line(P(a,b),P(c,d));
-Line(P(a,b),m);
-
-The line goes from one point to the other,
-the Line is that part of the entire line which lies inside the
-bounding box.
-
-Polygons
---------
-triangle(P(a,b),P(c,d),P(e,f));
-rect(P(a,b),P(c,d));
-quad(P(a,b),P(c,d),P(e,f),P(g,h));
-
-Axes
-----
-h_axis(P(a,b),P(c,d),n);
-v_axis(P(a,b),P(c,d),n);
-h_log_axis(P(a,b),P(c,d),n);
-v_log_axis(P(a,b),P(c,d),n);
-
-h_axis_labels(P(a,b),P(c,d),n,P(u,v));
-v_axis_labels(P(a,b),P(c,d),n,P(u,v));
-h_log_axis_labels(P(a,b),P(c,d),n,P(u,v));
-v_log_axis_labels(P(a,b),P(c,d),n,P(u,v));
-
-h_axis_masklabels(P(a,b),P(c,d),n,P(u,v));
-v_axis_masklabels(P(a,b),P(c,d),n,P(u,v));
-h_log_axis_masklabels(P(a,b),P(c,d),n,P(u,v));
-v_log_axis_masklabels(P(a,b),P(c,d),n,P(u,v));
-
-The axis commands will put n+1 evenly spaced tick marks on the line. 
-The labeling commands will put n+1 evenly spaced labels,
-masklabels will put the label on an opaque white rectangle.
-
-Points
-------
-spot(P(a,b)); dot(P(a,b)); ddot(P(a,b)); box(P(a,b)); bbox(P(a,b));
-circ(P(a,b));
-ring(P(a,b));
-
-spot, dot and ddot are various sized (in decreasing order) dots.
-A circ is a small circle with white interior.
-A ring is a small circle with transparent interior.
-
-Arrows
-------
-arrow(P(a,b),P(c,d));
-dart(P(a,b),P(c,d));
-
-A dart is a small arrow.
-
-Labels
-------
-label(P(a,b),P(u,v),\"label\");
-label(P(a,b),\"label\");
-label(P(a,b),P(u,v),\"label\",posn);
-masklabel(P(a,b),P(u,v),\"label\");
-masklabel(P(a,b),\"label\");
-masklabel(P(a,b),P(u,v),\"label\",posn);
-
-These commands put a label at the point P(a,b).
-P(u,v) is an offset (in true points).
-posn will specify the position of the label relative to the basepoint,
-and can be c(enter), l(eft), r(ight), t(op), b(ottom) or an
-appropriate pair.
-
-Text attributes
----------------
-label_color(Color); label_mask(Color); label_pad(len);
-label_border(Color, [len]); label_border(len); no_label_border();
-font_size(LaTeX size);  font_face(face);
-label_angle(theta);
-
-The LaTeX size is a string such as \"Huge\" or \"scriptsize\". The
-font face is one of \"rm\" (default), \"bf\", \"sc\", or \"tt\".
-
-Curves
-------
-ellipse(P(a,b),P(c,d),P(e,f),tmin,tmax);
-circle(P(a,b),r);
-circle(P(a,b),P(c,d),P(e,f));
-
-Ellipse draws (a,b)+Cos(t)*(c,d)+Sin(t)*(e,f) for tmin <= t <= tmax.
-
-Arcs
-----
-arc(P(a,b),r,theta1,theta2);
-arc_arrow(P(a,b),r,theta1,theta2);
-
-The angles are measured in current angle units (radians by default).
-
-Splines
--------
-spline(P(a,b),P(c,d),P(e,f));
-spline(P(a,b),P(c,d),P(e,f),P(g,h));
-
-Plotting
---------
-plot(f,a,b,n);
-
-This plots the function f from a to b using n+1 evenly spaced points. 
-If f is P-valued, then this will be a parametric plot.
-
-Calc plotting
--------------
-plot(Deriv(f),a,b,n);
-plot(Integral(f),a,b,n);
-plot(Integral(f),x0,a,b,n);
-
-plot(Deriv(f)...) plots f'.
-plot(Integral(f)...) plots int_a^x f (or if x0 is given, int_x0^x f).
-
-Tangents
---------
-tan_line(f,t);
-envelope(f,t_min,t_max,n);
-tan_field(f,t_min,t_max,n);
-
-tan_line will plot the tangent Line to the graph.
-envelope will plot n+1 tangent Lines.
-tan_field will plot n+1 tangent vectors.
-Here, as above, f can be P-valued.
-
-Vector fields
--------------
-slope_field(F,P(a,b),P(c,d),n1,n2);
-dart_field(F,P(a,b),P(c,d),n1,n2);
-vector_field(F,P(a,b),P(c,d),n1,n2);
-
-The slope_field elements will have fixed length, no arrows.
-The dart_field elements will have fixed length, small arrows.
-The vector_field elements will have true length.
-
-Fractals
---------
-const int seed[] = {N, k1, k2, k3, ... , kn};
-fractal(P(a,b),P(c,d),D,seed);
-
-seed determines a path made up of equal space line segments, each of
-which can point in the direction 2 pi k/N.  Each integer after N in seed
-will specify the direction of the next segment.
-fractal will recursively replace each segment in seed by a copy of the
-original, up to a depth of D, and draw it from P(a,b) to P(c,d)."
-  (setq font-lock-defaults
-        '((c++-font-lock-keywords 
-           c++-font-lock-keywords-1
-           c++-font-lock-keywords-2 
-           c++-font-lock-keywords-3)
-          nil nil ((?_ . "w")) beginning-of-defun
-          (font-lock-mark-block-function . mark-defun)))
-  (setq epix-output-buffer (concat "*" (buffer-file-name) " output*"))
-  (use-local-map flix-mode-map)
-  (if (and epix-insert-template-in-empty-buffer
-           (= (point-min) (point-max)))
-      (progn
-        (if epix-mark-files-as-epix
-            (epix-mark-file-as-flix))
-        (epix-insert-flix-template))
-    (if epix-mark-files-as-epix
-        (epix-mark-file-as-flix)))
-  (run-hooks 'epix-mode-hook)
-  (run-hooks 'flix-mode-hook))
-
-(provide 'epix)
diff --git a/graphics/epix/epix.in b/graphics/epix/epix.in
deleted file mode 100644
index d5c302cbbb..0000000000
--- a/graphics/epix/epix.in
+++ /dev/null
@@ -1,340 +0,0 @@
-#! /bin/bash
-#
-# epix: wrapper script for ePiX
-#
-# Options: --help for usage, --version for version and license
-#
-# Compiler flags may be specified on the command line or in the config
-# file ~/.epixrc. The script attempts to deal intelligently with missing
-# or multiple extensions. If the input file has a recognized extension,
-# there's no issue. If only the root name <infile> is given, the script
-# searches for completions in the order of preference dictated by the
-# variable EPIX_EXTENSIONS. A warning is issued for multiple matches.
-#
-# Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
-# Andrew D. Hwang   <For address, do "epix -V">
-# 
-
-. "@pkglibdir@/epix-lib.sh"
-
-EPIX_CONFIG_FILE="$HOME/.epixrc"
-# Search these extensions in order of preference
-EPIX_EXTENSIONS="xp flx cc c C cpp" # or NULL
-EPIX_DOT_EXT=".${EPIX_EXTENSIONS// /|.}" # for usage message
-
-# Default inc/lib directories and compiler
-DEFAULT_INC="-I@includedir@"
-DEFAULT_LIB="-L@pkglibdir@"
-COMPILER="@RUNTIME_COMPILER@"
-
-# Use default library unless we're called by version number
-LIBS="-lm"
-POSTLIBS="-lepix"
-EPIX_SRC_EXT=cc
-
-declare EPIX_MYINCLUDES
-declare EPIX_MYLIBDIRS
-declare EPIX_MYLIBS
-declare EPIX_MYWARNS
-declare EPIX_MYFLAGS
-
-declare -a EPIX_FILE_LIST
-
-declare -a TEMPFILES
-trap '[ -n "${TEMPFILES[*]}" ] && rm -f "${TEMPFILES[@]}"' 0 1 2 3 7 10 13 15
-
-function epix_help()
-{
-cat <<"HELP"
-Options:
-    -h, --help
-      Show this message and exit
-
-    -V, --version
-      Show version and exit
-
-    -v, --verbose
-      Show success/failure messages
-
-    --gpl
-      Show license
-
-    -o, --output
-      Specify output file name (ONLY for use with a single input file)
-
-    --pst
-      Write output file using PSTricks macros
-
-    --tikz
-      Write output file using tikz macros
-
-    --eepic
-      Write output file using eepic macros
-
-    -I<include>
-      Append include directory
-
-    -L<library>
-      Append library directory
-
-    -l<lib>
-      Link against lib
-
-    --no-defaults
-      Do not use default include/library directories or libraries
-
-    -cc, --compiler)
-      Specify the compiler (e.g., gcc)
-
-    All other options are passed to the compiler. Valid options, 
-    one per line, may be placed in $HOME/.epixrc. 
-
-HELP
-ePiX_bugreport
-
-} # End of epix_help
-
-
-# Parse command line/config file for compiler flags/options
-function epix_parse_options {
-while [ "$1" != "${1#-}" ]; do
-    case "$1" in
-
-    -I)
-        if [ $# -lt 2 ]; then ePiX_die "Missing argument to \"$1\" option"; fi
-	EPIX_MYINCLUDES="$EPIX_MYINCLUDES -I$2"; shift 2; continue
-	;;
-
-    -L)
-        if [ $# -lt 2 ]; then ePiX_die "Missing argument to \"$1\" option"; fi
-	EPIX_MYLIBDIRS="$EPIX_MYLIBDIRS -L$2"; shift 2; continue
-	;;
-
-    -l)
-        if [ $# -lt 2 ]; then ePiX_die "Missing argument to \"$1\" option"; fi
-	EPIX_MYLIBS="$EPIX_MYLIBS -l$2"; shift 2; continue
-	;;
-
-    -W)
-        if [ $# -lt 2 ]; then ePiX_die "Missing argument to \"$1\" option"; fi
-	EPIX_MYWARNS="$EPIX_MYWARNS -W$2"; shift 2; continue
-	;;
-
-    -I*)
-	EPIX_MYINCLUDES="$EPIX_MYINCLUDES $1"; shift; continue
-	;;
-
-    -L*)
-	EPIX_MYLIBDIRS="$EPIX_MYLIBDIRS $1"; shift; continue
-	;;
-
-    -l*)
-	EPIX_MYLIBS="$EPIX_MYLIBS $1"; shift; continue
-	;;
-
-    -W*)
-	EPIX_MYWARNS="$EPIX_MYWARNS $1"; shift; continue
-	;;
-
-    -i*|-u|-x)
-        if [ $# -lt 2 ]; then ePiX_die "Missing argument to \"$1\" option"; fi
-	EPIX_MYFLAGS="$EPIX_MYFLAGS $1 $2"; shift 2; continue
-	;;
-
-    -b) 
-	ePiX_warn "Skipping option \"$1 $2\""
-	shift 2; continue
-	;;
-
-    -o|--output)
-        if [ $# -lt 2 ]; then ePiX_die "Missing argument to \"$1\" option"; fi
-        EPIX_OUTFILE="$2"
-      	EPIX_OUTROOT="${EPIX_OUTFILE%%.eepic}"
-        shift 2; continue
-        ;;
-
-    --pst)
-        EPIX_MYFLAGS="$EPIX_MYFLAGS -DEPIX_FMT_PSTRICKS"
-	shift; continue
-	;;
-
-    --tikz)
-	EPIX_MYFLAGS="$EPIX_MYFLAGS -DEPIX_FMT_TIKZ"
-	shift; continue
-	;;
-
-    --eepic)
-	EPIX_MYFLAGS="$EPIX_MYFLAGS -DEPIX_FMT_EEPIC"
-	shift; continue
-	;;
-
-    # Deliberately undocumented
-    -q|--quiet)
-        EPIX_STDOUT="$SYSTEM_DEVNULL"
-        EPIX_STDERR="$SYSTEM_DEVNULL"
-        shift; continue
-        ;;
-
-    -v|--verbose)
-        if [ -z "$2" ]; then 
-            echo "Please use -V for version"
-            exit 0
-        fi
-        EPIX_STDOUT="$SYSTEM_STDOUT"
-        EPIX_STDERR="$SYSTEM_STDERR"
-        shift; continue
-        ;;
-
-    -vv)
-        echo "Discontinued option -vv; please use -v for verbose output"
-        exit 0
-        ;;
-
-
-    -h|--help)
-	ePiX_usage epix $EPIX_DOT_EXT
-	epix_help
-	exit 0
-	;;
-
-    -V|--version|--gpl)
-        ePiX_version epix
-        ePiX_license
-        exit 0
-        ;;
-
-    --no-defaults)
-        POSTLIBS=
-	DEFAULT_INC=
-	DEFAULT_LIB=
-        shift; continue
-        ;;
-
-    -cc|--compiler)
-        if [ $# -lt 2 ]; then ePiX_die "Missing argument to \"$1\" option"; fi
-        COMPILER=$2
-        COMP_NAME=$(basename "$COMPILER")
-        if [ "${COMP_NAME: -2}" = cc ]; then EPIX_SRC_EXT=c; fi
-        shift 2; continue
-        ;;
-
-    *)
-	EPIX_MYFLAGS="$EPIX_MYFLAGS $1"; shift; continue
-	;;
-    esac
-
-done
-
-# Assume remaining parameters are input files
-EPIX_FILE_LIST=("$@")
-} # End of epix_parse_options
-
-
-# Compile specified files to eepic
-function epix_compile_files {
-
-    if [ -z "$1" ]; then
-        ePiX_die "No input file specified"
-    fi
-
-    mkdir "$EPIX_TEMPDIR" || ePiX_die "Can't create \"${EPIX_TEMPDIR}\""
-
-    # file counts
-    local processed=0
-    local success=0
-    local failure=0
-
-    for EPIX_INFILE in "${EPIX_FILE_LIST[@]}"; do
-
-        # sets EPIX_INROOT, EPIX_SUFFIX, EPIX_NOTFOUND, touches EPIX_LOGFILE
-        epix_parse_filename "$EPIX_INFILE" "$EPIX_EXTENSIONS"
-        let processed=processed+1
-
-        if [ "$EPIX_NOTFOUND" = "yes" ]; then ePiX_fail && continue; fi
-
-        : ${EPIX_OUTROOT:=$EPIX_INROOT}
-        EPIX_OUTFILE="$EPIX_OUTROOT".eepic
-
-        { TEMP_BIN="$EPIX_INROOT" &&
-            touch "${EPIX_TEMPDIR}/$TEMP_BIN" &&
-            TEMPFILES=("{TEMPFILES[@]}" "${EPIX_TEMPDIR}/$TEMP_BIN") ; } ||
-        { ePiX_fail "Couldn't create \"$EPIX_TEMPDIR/$TEMP_BIN\"" && continue;}
-
-        # Create symlink to input file with appropriate extension for compiler
-        TEMP_INPUT="${TEMP_BIN}-tmp.$EPIX_SRC_EXT"
-
-        TEMPFILES=("{TEMPFILES[@]}" "${EPIX_TEMPDIR}/$TEMP_INPUT")
-
-        { cd ${EPIX_TEMPDIR} && \
-            ln -s "../$EPIX_INFILE" "$TEMP_INPUT" && cd .. ; } || 
-          { ePiX_fail "Couldn't create \"${EPIX_TEMPDIR}/$TEMP_INPUT\"" && \
-            continue; }
-
-        # Log message, and compile executable
-        TMP_CMD=($COMPILER "${EPIX_TEMPDIR}/${TEMP_INPUT}" $EPIX_MYWARNS \
-            -o "${EPIX_TEMPDIR}/${TEMP_BIN}" \
-            $EPIX_MYFLAGS $EPIX_MYINCLUDES $DEFAULT_INC $EPIX_MYLIBDIRS \
-            $DEFAULT_LIB $LIBS $EPIX_MYLIBS $POSTLIBS)
-
-        ePiX_command "${TMP_CMD[@]}"
-
-        # Write eepic file
-        if [ -x "$EPIX_TEMPDIR/$TEMP_BIN" ]; then 
-            echo "%% Generated from $EPIX_INFILE on $(date) by" \
-                > "$EPIX_OUTFILE"
-            ePiX_msg "Writing eepic file: ./$EPIX_TEMPDIR/$TEMP_BIN > $EPIX_OUTFILE"
-            ./$EPIX_TEMPDIR/"$TEMP_BIN" >> "$EPIX_OUTFILE"
-
-            if [ $? -ne 0 ]; then
-                ePiX_warn "Could not create $EPIX_OUTFILE"
-                let failure=failure+1
-            else
-                let success=success+1
-            fi
-
-        else
-            ePiX_warn "Compilation of $EPIX_INFILE failed"
-            let failure=failure+1
-        fi
-
-        # Clean up; for multiple input files, clear output name
-        rm -f "$EPIX_TEMPDIR/$TEMP_BIN" "$EPIX_TEMPDIR/$TEMP_INPUT"
-        if [ "$EPIX_OUTROOT" = "$EPIX_INROOT" ]; then unset EPIX_OUTROOT; fi
-
-        echo -e "\nTranscript written on $EPIX_LOGFILE" > "$EPIX_STDOUT"
-
-    done # for EPIX_INFILE in $INFILE_LIST
-
-    if [ $processed -gt 1 ]; then
-        echo "$processed files processed: $success successfully, $failure failed" > "$EPIX_STDERR"
-    fi
-
-    if [ -d "$EPIX_TEMPDIR" ]; then rm -Rf "$EPIX_TEMPDIR"; fi
-} # end of epix_compile_files
-
-## Script proper starts here ##
-
-if [ $# -eq 0 ]; then 
-    ePiX_usage epix $EPIX_DOT_EXT
-    epix_help
-    exit 0
-fi
-
-# Read options from the config file, if any
-if [ -f "$EPIX_CONFIG_FILE" ]; then
-    cat "$EPIX_CONFIG_FILE" | grep -v "#" | \
-        while read line; do
-            epix_parse_options "$line"
-        done
-fi
-
-# Command line options override config file options
-epix_parse_options "$@"
-
-# Suppress all warnings if none are requested
-if [ "$EPIX_MYWARNS" = "" ]; then EPIX_MYWARNS="-w"; fi
-
-# Remaining option(s) assumed to be input file(s)
-epix_compile_files "${EPIX_FILE_LIST[@]}"
-
-exit 0
diff --git a/graphics/epix/errors.h b/graphics/epix/errors.h
deleted file mode 100644
index 7867e22686..0000000000
--- a/graphics/epix/errors.h
+++ /dev/null
@@ -1,55 +0,0 @@
-/*
- * errors.h -- ePiX warning/error functions
- *
- * This file is part of ePiX, a preprocessor for creating high-quality 
- * line figures in LaTeX 
- *
- * Version 1.1.9
- * Last Change: July 30, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#ifndef EPIX_ERRORS
-#define EPIX_ERRORS
-
-#include <iostream>
-#include <string>
-
-namespace ePiX {
-
-  inline void epix_warning(std::string msg)
-  {
-    std::cerr << "ePiX WARNING: " << msg << std::endl;
-  } 
-
-  inline void epix_error(std::string msg)
-  {
-    std::cerr << "ePiX ERROR: " << msg << std::endl;
-    exit(1);
-  } 
-} // end of namespace
-
-#endif /* EPIX_ERRORS */
diff --git a/graphics/epix/facet.cc b/graphics/epix/facet.cc
deleted file mode 100644
index 3b808d1b59..0000000000
--- a/graphics/epix/facet.cc
+++ /dev/null
@@ -1,505 +0,0 @@
-/*
- * facet.cc -- Utility classes for shaded surface plotting
- *
- * This file is part of ePiX, a C++ library for creating high-quality
- * figures in LaTeX
- *
- * Version 1.2.0-2
- * Last Change: September 26, 2007
- */
-
-/*
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#include <cmath>
-
-#include "constants.h"
-#include "errors.h"
-#include "functions.h"
-
-#include "frame.h"
-#include "camera.h"
-
-#include "Color.h"
-#include "paint_style.h"
-
-#include "facet.h"
-
-namespace ePiX {
-
-  facet::facet(P f(double, double),
-	       double u0, double v0,
-	       double du, double dv,
-	       const unsigned int N1, const unsigned int N2)
-    : m_tint(the_paint_style().fill_color()),
-      m_line(the_paint_style().line_pen()),
-      m_fill(the_paint_style().fill_flag()),
-      pt1(f(u0,         v0)),
-      pt2(f(u0 + N1*du, v0)),
-      pt3(f(u0 + N1*du, v0 + N2*dv)),
-      pt4(f(u0,         v0 + N2*dv)),
-      center(0.25*(pt1 + pt2 + pt3 + pt4)),
-      direction(center-cam().viewpt()),
-      distance(norm(direction))
-  {
-    perp = ((pt2 - center)*(pt1 - center));
-
-    if (norm(perp) < EPIX_EPSILON)
-      perp = (pt4 - center)*(pt3 - center);
-
-    perp *= recip(norm(perp));
-
-    // bottom edge
-    for (unsigned int i=0; i<N1; ++i)
-      bd.pt(f(u0 + i*du, v0));
-
-    // right edge
-    for (unsigned int j=0; j<N2; ++j)
-      bd.pt(f(u0 + N1*du, v0 + j*dv));
-
-    // top edge (backward)
-    for (unsigned int i=0; i<N1; ++i)
-      bd.pt(f(u0 + (N1-i)*du, v0 + N2*dv));
-
-    // left edge (downward)
-    for (unsigned int j=0; j<N2; ++j)
-      bd.pt(f(u0, v0 + (N2-j)*dv));
-
-    bd.close().fill(!m_tint.is_unset());
-  }
-
-
-  // facet constructor for f(double, double, double)
-  facet::facet(P f(double, double, double),
-	       double u0, double v0, double w0,
-	       double du, double dv, double dw,
-	       const unsigned int N1, const unsigned int N2)
-    : m_tint(the_paint_style().fill_color()),
-      m_line(the_paint_style().line_pen()),
-      m_fill(the_paint_style().fill_flag()),
-      pt1(f(u0, v0, w0))
-  {
-    if (du == 0) // (y,z)
-      {
-	// bottom edge
-	for (unsigned int i=0; i<N1; ++i)
-	  bd.pt(f(u0, v0 + i*dv, w0));
-
-	// right edge
-	for (unsigned int j=0; j<N2; ++j)
-	  bd.pt(f(u0, v0 + N1*dv, w0 + j*dw));
-
-	// top edge (backward)
-	for (unsigned int i=0; i<N1; ++i)
-	  bd.pt(f(u0, v0 + (N1-i)*dv, w0 + N2*dw));
-
-	// left edge (downward)
-	for (unsigned int j=0; j<N2; ++j)
-	  bd.pt(f(u0, v0, w0 + (N2-j)*dw));
-
-	// use corners to approximate distance to camera
-	pt2 = f(u0, v0 + N1*dv, w0);
-	pt3 = f(u0, v0 + N1*dv, w0 + N2*dw);
-	pt4 = f(u0, v0,         w0 + N2*dw);
-      }
-
-    else if (dv == 0) // (x,z)
-      {
-	// bottom edge
-	for (unsigned int i=0; i<N1; ++i)
-	  bd.pt(f(u0 + i*du, v0, w0));
-
-	// right edge
-	for (unsigned int j=0; j<N2; ++j)
-	  bd.pt(f(u0 + N1*du, v0, w0 + j*dw));
-
-	// top edge (backward)
-	for (unsigned int i=0; i<N1; ++i)
-	  bd.pt(f(u0 + (N1-i)*du, v0, w0 + N2*dw));
-
-	// left edge (downward)
-	for (unsigned int j=0; j<N2; ++j)
-	  bd.pt(f(u0, v0, w0 + (N2-j)*dw));
-
-	// use corners to approximate distance to camera
-	pt2 = f(u0 + N1*du, v0, w0);
-	pt3 = f(u0 + N1*du, v0, w0 + N2*dw);
-	pt4 = f(u0,         v0, w0 + N2*dw);
-      }
-
-    else if (dw == 0) // (x,y)
-      {
-	// bottom edge
-	for (unsigned int i=0; i<N1; ++i)
-	  bd.pt(f(u0 + i*du, v0, w0));
-
-	// right edge
-	for (unsigned int j=0; j<N2; ++j)
-	  bd.pt(f(u0 + N1*du, v0 + j*dv, w0));
-
-	// top edge (backward)
-	for (unsigned int i=0; i<N1; ++i)
-	  bd.pt(f(u0 + (N1-i)*du, v0 + N2*dv, w0));
-
-	// left edge (downward)
-	for (unsigned int j=0; j<N2; ++j)
-	  bd.pt(f(u0, v0 + (N2-j)*dv, w0));
-
-	// use corners to approximate distance to camera
-	pt2 = f(u0 + N1*du, v0,         w0);
-	pt3 = f(u0 + N1*du, v0 + N2*dv, w0);
-	pt4 = f(u0,         v0 + N2*dv, w0);
-      }
-
-    else
-      epix_error("Bad call to facet constructor"); // exits
-
-    bd.close().fill(!m_tint.is_unset());
-
-    center = 0.25*(pt1 + pt2 + pt3 + pt4);
-
-    direction = center-cam().viewpt();
-    distance = norm(direction);
-
-    perp = ((pt2 - center)*(pt1 - center));
-
-    if (norm(perp) < EPIX_EPSILON)
-      perp = (pt4 - center)*(pt3 - center);
-
-    perp *= recip(norm(perp));
-
-  } // end of facet(f(double, double, double), ...)
-
-
-  // for surface of rotation
-  facet::facet(double f(double), double g(double),
-	       double u0, double v0,
-	       double du, double dv,
-	       const unsigned int N1, const unsigned int N2,
-	       const frame& coords)
-    : m_tint(the_paint_style().fill_color()),
-      m_line(the_paint_style().line_pen()),
-      m_fill(the_paint_style().fill_flag()),
-      pt1(f(u0)*coords.sea() +
-	  g(u0)*Cos(v0)*coords.sky() +
-	  g(u0)*Sin(v0)*coords.eye()),
-      pt2(f(u0 + N1*du)*coords.sea() +
-	  g(u0 + N1*du)*Cos(v0)*coords.sky() +
-	  g(u0 + N1*du)*Sin(v0)*coords.eye()),
-      pt3(f(u0 + N1*du)*coords.sea() +
-	  g(u0 + N1*du)*Cos(v0 + N2*dv)*coords.sky() +
-	  g(u0 + N1*du)*Sin(v0 + N2*dv)*coords.eye()),
-      pt4(f(u0)*coords.sea() +
-	  g(u0)*Cos(v0 + N2*dv)*coords.sky() +
-	  g(u0)*Sin(v0 + N2*dv)*coords.eye()),
-      center(0.25*(pt1 + pt2 + pt3 + pt4)),
-      direction(center-cam().viewpt()), distance(norm(direction))
-  {
-    perp = ((pt2 - center)*(pt1 - center));
-
-    if (norm(perp) < EPIX_EPSILON)
-      perp = (pt4 - center)*(pt3 - center);
-
-    perp *= recip(norm(perp));
-
-    // bottom edge
-    for (unsigned int i=0; i<N1; ++i)
-      bd.pt(f(u0 + i*du)*coords.sea() +
-	    g(u0 + i*du)*Cos(v0)*coords.sky() +
-	    g(u0 + i*du)*Sin(v0)*coords.eye());
-
-    // right edge
-    for (unsigned int j=0; j<N2; ++j)
-      bd.pt(f(u0 + N1*du)*coords.sea() +
-	    g(u0 + N1*du)*Cos(v0 + j*dv)*coords.sky() +
-	    g(u0 + N1*du)*Sin(v0 + j*dv)*coords.eye());
-
-    // top edge (backward)
-    for (unsigned int i=0; i<N1; ++i)
-      bd.pt(f(u0 + (N1-i)*du)*coords.sea() +
-	    g(u0 + (N1-i)*du)*Cos(v0 + N2*dv)*coords.sky() +
-	    g(u0 + (N1-i)*du)*Sin(v0 + N2*dv)*coords.eye());
-
-    // left edge (downward)
-    for (unsigned int j=0; j<N2; ++j)
-      bd.pt(f(u0)*coords.sea() +
-	    g(u0)*Cos(v0 + (N2-j)*dv)*coords.sky() +
-	    g(u0)*Sin(v0 + (N2-j)*dv)*coords.eye());
-
-    bd.close().fill(!m_tint.is_unset());
-  }
-
-  //// Color-dependent constructors
-  facet::facet(P f(double, double),
-	       double u0, double v0,
-	       double du, double dv,
-	       const unsigned int N1, const unsigned int N2,
-	       const Color& tint)
-    : m_tint(tint), m_line(the_paint_style().line_pen()),
-      m_fill(the_paint_style().fill_flag()),
-      pt1(f(u0,         v0)),
-      pt2(f(u0 + N1*du, v0)),
-      pt3(f(u0 + N1*du, v0 + N2*dv)),
-      pt4(f(u0,         v0 + N2*dv)),
-      center(0.25*(pt1 + pt2 + pt3 + pt4)),
-      direction(center-cam().viewpt()),
-      distance(norm(direction))
-  {
-    perp = ((pt2 - center)*(pt1 - center));
-
-    if (norm(perp) < EPIX_EPSILON)
-      perp = (pt4 - center)*(pt3 - center);
-
-    perp *= recip(norm(perp));
-
-    // bottom edge
-    for (unsigned int i=0; i<N1; ++i)
-      bd.pt(f(u0 + i*du, v0));
-
-    // right edge
-    for (unsigned int j=0; j<N2; ++j)
-      bd.pt(f(u0 + N1*du, v0 + j*dv));
-
-    // top edge (backward)
-    for (unsigned int i=0; i<N1; ++i)
-      bd.pt(f(u0 + (N1-i)*du, v0 + N2*dv));
-
-    // left edge (downward)
-    for (unsigned int j=0; j<N2; ++j)
-      bd.pt(f(u0, v0 + (N2-j)*dv));
-
-    bd.close().fill(!m_tint.is_unset());
-  }
-
-
-  // facet constructor for f(double, double, double)
-  facet::facet(P f(double, double, double),
-	       double u0, double v0, double w0,
-	       double du, double dv, double dw,
-	       const unsigned int N1, const unsigned int N2,
-	       const Color& tint)
-    : m_tint(tint), m_line(the_paint_style().line_pen()),
-      m_fill(the_paint_style().fill_flag()),
-      pt1(f(u0, v0, w0))
-  {
-    if (du == 0) // (y,z)
-      {
-	// bottom edge
-	for (unsigned int i=0; i<N1; ++i)
-	  bd.pt(f(u0, v0 + i*dv, w0));
-
-	// right edge
-	for (unsigned int j=0; j<N2; ++j)
-	  bd.pt(f(u0, v0 + N1*dv, w0 + j*dw));
-
-	// top edge (backward)
-	for (unsigned int i=0; i<N1; ++i)
-	  bd.pt(f(u0, v0 + (N1-i)*dv, w0 + N2*dw));
-
-	// left edge (downward)
-	for (unsigned int j=0; j<N2; ++j)
-	  bd.pt(f(u0, v0, w0 + (N2-j)*dw));
-
-	// use corners to approximate distance to camera
-	pt2 = f(u0, v0 + N1*dv, w0);
-	pt3 = f(u0, v0 + N1*dv, w0 + N2*dw);
-	pt4 = f(u0, v0,         w0 + N2*dw);
-      }
-
-    else if (dv == 0) // (x,z)
-      {
-	// bottom edge
-	for (unsigned int i=0; i<N1; ++i)
-	  bd.pt(f(u0 + i*du, v0, w0));
-
-	// right edge
-	for (unsigned int j=0; j<N2; ++j)
-	  bd.pt(f(u0 + N1*du, v0, w0 + j*dw));
-
-	// top edge (backward)
-	for (unsigned int i=0; i<N1; ++i)
-	  bd.pt(f(u0 + (N1-i)*du, v0, w0 + N2*dw));
-
-	// left edge (downward)
-	for (unsigned int j=0; j<N2; ++j)
-	  bd.pt(f(u0, v0, w0 + (N2-j)*dw));
-
-	// use corners to approximate distance to camera
-	pt2 = f(u0 + N1*du, v0, w0);
-	pt3 = f(u0 + N1*du, v0, w0 + N2*dw);
-	pt4 = f(u0,         v0, w0 + N2*dw);
-      }
-
-    else if (dw == 0) // (x,y)
-      {
-	// bottom edge
-	for (unsigned int i=0; i<N1; ++i)
-	  bd.pt(f(u0 + i*du, v0, w0));
-
-	// right edge
-	for (unsigned int j=0; j<N2; ++j)
-	  bd.pt(f(u0 + N1*du, v0 + j*dv, w0));
-
-	// top edge (backward)
-	for (unsigned int i=0; i<N1; ++i)
-	  bd.pt(f(u0 + (N1-i)*du, v0 + N2*dv, w0));
-
-	// left edge (downward)
-	for (unsigned int j=0; j<N2; ++j)
-	  bd.pt(f(u0, v0 + (N2-j)*dv, w0));
-
-	// use corners to approximate distance to camera
-	pt2 = f(u0 + N1*du, v0,         w0);
-	pt3 = f(u0 + N1*du, v0 + N2*dv, w0);
-	pt4 = f(u0,         v0 + N2*dv, w0);
-      }
-
-    else
-      epix_error("Bad call to facet constructor"); // exits
-
-    bd.close().fill(!m_tint.is_unset());
-
-    center = 0.25*(pt1 + pt2 + pt3 + pt4);
-
-    direction = center-cam().viewpt();
-    distance = norm(direction);
-
-    perp = ((pt2 - center)*(pt1 - center));
-
-    if (norm(perp) < EPIX_EPSILON)
-      perp = (pt4 - center)*(pt3 - center);
-
-    perp *= recip(norm(perp));
-
-  } // end of facet(f(double, double, double), ...)
-
-
-  // for surface of rotation
-  facet::facet(double f(double), double g(double),
-	       double u0, double v0,
-	       double du, double dv,
-	       const unsigned int N1, const unsigned int N2,
-	       const Color& tint, const frame& coords)
-    : m_tint(tint), m_line(the_paint_style().line_pen()),
-      m_fill(the_paint_style().fill_flag()),
-      pt1(f(u0)*coords.sea() +
-	  g(u0)*Cos(v0)*coords.sky() +
-	  g(u0)*Sin(v0)*coords.eye()),
-      pt2(f(u0 + N1*du)*coords.sea() +
-	  g(u0 + N1*du)*Cos(v0)*coords.sky() +
-	  g(u0 + N1*du)*Sin(v0)*coords.eye()),
-      pt3(f(u0 + N1*du)*coords.sea() +
-	  g(u0 + N1*du)*Cos(v0 + N2*dv)*coords.sky() +
-	  g(u0 + N1*du)*Sin(v0 + N2*dv)*coords.eye()),
-      pt4(f(u0)*coords.sea() +
-	  g(u0)*Cos(v0 + N2*dv)*coords.sky() +
-	  g(u0)*Sin(v0 + N2*dv)*coords.eye()),
-      center(0.25*(pt1 + pt2 + pt3 + pt4)),
-      direction(center-cam().viewpt()), distance(norm(direction))
-  {
-    perp = ((pt2 - center)*(pt1 - center));
-
-    if (norm(perp) < EPIX_EPSILON)
-      perp = (pt4 - center)*(pt3 - center);
-
-    perp *= recip(norm(perp));
-
-    // bottom edge
-    for (unsigned int i=0; i<N1; ++i)
-      bd.pt(f(u0 + i*du)*coords.sea() +
-	    g(u0 + i*du)*Cos(v0)*coords.sky() +
-	    g(u0 + i*du)*Sin(v0)*coords.eye());
-
-    // right edge
-    for (unsigned int j=0; j<N2; ++j)
-      bd.pt(f(u0 + N1*du)*coords.sea() +
-	    g(u0 + N1*du)*Cos(v0 + j*dv)*coords.sky() +
-	    g(u0 + N1*du)*Sin(v0 + j*dv)*coords.eye());
-
-    // top edge (backward)
-    for (unsigned int i=0; i<N1; ++i)
-      bd.pt(f(u0 + (N1-i)*du)*coords.sea() +
-	    g(u0 + (N1-i)*du)*Cos(v0 + N2*dv)*coords.sky() +
-	    g(u0 + (N1-i)*du)*Sin(v0 + N2*dv)*coords.eye());
-
-    // left edge (downward)
-    for (unsigned int j=0; j<N2; ++j)
-      bd.pt(f(u0)*coords.sea() +
-	    g(u0)*Cos(v0 + (N2-j)*dv)*coords.sky() +
-	    g(u0)*Sin(v0 + (N2-j)*dv)*coords.eye());
-
-    bd.close().fill(!m_tint.is_unset());
-  }
-
-
-  facet* facet::clone() const
-  {
-    return new facet(*this);
-  }
-
-  double facet::how_far() const { return distance; }
-
-  bool facet::front_facing() const
-  {
-    return (-direction|perp) > -EPIX_EPSILON;
-  }
-
-  // N.B. We assume the fill state is stored by our caller
-  void facet::draw(int cull) const
-  {
-    if (( cull ==  1 && front_facing() ) || ( cull == -1 && !front_facing() ))
-      return;
-
-    // else
-    Color paint(m_tint);
-    if (paint.is_unset())
-      paint = White();
-
-    Color ink(m_line.color());
-    if (ink.is_unset())
-      ink = paint;
-
-    if (m_fill)
-      {
-	// calculate cosine^2 of normal angle
-	// Magic formula (simulated ambient lighting)
-	const double dens(0.5*(1+pow(perp|(recip(distance)*direction), 2)));
-
-	paint *= dens;
-	ink   *= dens;
-      }
-
-    bd.draw(paint, pen_data(ink, m_line.width()));
-  } // end of facet::draw(bool, int)
-
-
-  bool by_distance::operator() (const facet& arg1, const facet& arg2)
-  {
-    return arg1.how_far() > arg2.how_far();
-  }
-
-  bool by_distance::operator() (const facet* arg1, const facet* arg2)
-  {
-    return arg1->how_far() > arg2->how_far();
-  }
-} // end of namespace
diff --git a/graphics/epix/facet.h b/graphics/epix/facet.h
deleted file mode 100644
index 0e118da181..0000000000
--- a/graphics/epix/facet.h
+++ /dev/null
@@ -1,105 +0,0 @@
-/*
- * facet.h -- Utility classes for shaded surface plotting
- *
- * This file is part of ePiX, a C++ library for creating high-quality
- * figures in LaTeX
- *
- * Version 1.1.7
- * Last Change: July 08, 2007
- */
-
-/*
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include "triples.h"
-#include "frame.h"
-
-#include "path.h"
-
-#include "Color.h"
-#include "pen_data.h"
-
-namespace ePiX {
-
-  class facet {
-  public:
-    // create quasi-planar region bounded by path segments in f(R)
-    facet(P f(double, double),
-	  double u0, double v0, double du, double dv,
-	  const unsigned int N1, const unsigned int N2);
-
-    facet(P f(double, double, double),
-	  double u0, double v0, double w0,
-	  double du, double dv, double dw,
-	  const unsigned int N1, const unsigned int N2);
-
-    // for surfaces of rotation
-    facet(double f(double), double g(double),
-	  double u0, double v0, double du, double dv,
-	  const unsigned int N1, const unsigned int N2,
-	  const frame& coords=frame());
-
-
-    facet(P f(double, double),
-	  double u0, double v0, double du, double dv,
-	  const unsigned int N1, const unsigned int N2, const Color&);
-
-    facet(P f(double, double, double),
-	  double u0, double v0, double w0,
-	  double du, double dv, double dw,
-	  const unsigned int N1, const unsigned int N2, const Color&);
-
-    // for surfaces of rotation
-    facet(double f(double), double g(double),
-	  double u0, double v0, double du, double dv,
-	  const unsigned int N1, const unsigned int N2, const Color&,
-	  const frame& coords=frame());
-
-
-    facet* clone() const;
-
-    double how_far() const;
- 
-    bool front_facing() const;
-
-    void draw(int cull) const;
-
-  private:
-    Color m_tint;
-    pen_data m_line;
-    bool m_fill;
-
-    P pt1, pt2, pt3, pt4, center, direction, perp;
-    double distance;
-
-    path bd;
-  };
-
-
-  class by_distance {
-  public:
-    bool operator() (const facet&, const facet&);
-    bool operator() (const facet*, const facet*);
-  };
-} // end of namespace
diff --git a/graphics/epix/files b/graphics/epix/files
deleted file mode 100644
index 4997b1e7ba..0000000000
--- a/graphics/epix/files
+++ /dev/null
@@ -1,224 +0,0 @@
-# Version 1.2.1
-AUTHORS
-BUGS
-ChangeLog
-COPYING
-INSTALL
-Makefile.am
-Makefile.in
-NEWS
-POST-INSTALL
-README
-THANKS
-TODO
-VERSION
-aclocal.m4
-active_screen.cc
-active_screen.h
-affine.cc
-affine.h
-angle_units.cc
-angle_units.h
-arrow_data.cc
-arrow_data.h
-arrow_style.cc
-arrow_style.h
-axis.cc
-axis.h
-bash_completions
-camera.cc
-camera.h
-circle.cc
-circle.h
-clipping.cc
-clipping.h
-Color.cc
-Color.h
-Color_Base.cc
-Color_Base.h
-Color_CMY.cc
-Color_CMY.h
-Color_CMYK.cc
-Color_CMYK.h
-Color_Gray.cc
-Color_Gray.h
-#Color_Named.cc
-#Color_Named.h
-Color_Neutral.cc
-Color_Neutral.h
-Color_RGB.cc
-Color_RGB.h
-Color_Sep.cc
-Color_Sep.h
-Color_Utils.cc
-Color_Utils.h
-#color.cc
-#color.h
-config.guess
-config.sub
-configure
-configure.ac
-#configure.in
-constants.h
-crop_algorithms.h
-cropping.h
-cropping.cc
-curves.cc
-curves.h
-data_bins.cc
-data_bins.h
-data_file.cc
-data_file.h
-data_mask.cc
-data_mask.h
-#dataplot.cc
-#dataplot.h
-debug.h
-depcomp
-deriv.h
-domain.cc
-domain.h
-edge_data.h
-eepic.cc
-eepic.h
-elaps.1
-elaps.in
-enums.h
-#epix.1
-epix.1.in
-#epix.ebuild
-epix.el.in
-epix.in
-#epix.spec
-epix-lib.sh
-errors.h
-facet.cc
-facet.h
-files
-flix.1
-flix.in
-fmt_template.cc
-fmt_template.h
-format.cc
-format.h
-frac.cc
-frac.h
-frame.cc
-frame.h
-functions.cc
-functions.h
-geometry.cc
-geometry.h
-#globals.cc
-#globals.h
-glyph.cc
-glyph.h
-halfspace.cc
-halfspace.h
-hatching.cc
-hatching.h
-install-sh
-intersections.cc
-intersections.h
-interval.cc
-interval.h
-label_data.cc
-label_data.h
-label_style.cc
-label_style.h
-#Label.cc
-#Label.h
-laps.1
-laps.in
-legend.cc
-legend.h
-legend_item.cc
-legend_item.h
-legend_tile.cc
-legend_tile.h
-length.cc
-length.h
-lens.cc
-lens.h
-make_header
-map.h
-markers.cc
-markers.h
-marker_style.cc
-marker_style.h
-mask_diamond.cc
-mask_diamond.h
-mask_ellipse.cc
-mask_ellipse.h
-mask_rectangle.cc
-mask_rectangle.h
-missing
-mkinstalldirs
-#objects.cc
-#objects.h
-#output.cc
-#output.h
-paint_style.cc
-paint_style.h
-pairs.cc
-pairs.h
-path.h
-path.cc
-path_data.cc
-path_data.h
-path_style.cc
-path_style.h
-pen_arrow.cc
-pen_arrow.h
-pen_data.cc
-pen_data.h
-pen_fill.cc
-pen_fill.h
-pen_line.cc
-pen_line.h
-picture.cc
-picture.h
-picture_data.cc
-picture_data.h
-plane.cc
-plane.h
-plot_algorithms.h
-plots.cc
-plots.h
-#polygon.cc
-#polygon.h
-#polyhedron.cc
-#polyhedron.h
-pst.cc
-pst.h
-screen.cc
-screen.h
-screen_crop.cc
-screen_crop.h
-screen_data.cc
-screen_data.h
-screen_mask.cc
-screen_mask.h
-segment.cc
-segment.h
-sphere.cc
-sphere.h
-spline_data.h
-spline.cc
-spline.h
-state.cc
-state.h
-#state_data.cc
-#state_data.h
-surface.cc
-surface.h
-tikz.cc
-tikz.h
-tile.cc
-tile.h
-triples.cc
-triples.h
-utils.cc
-utils.h
-verbatim.cc
-verbatim.h
diff --git a/graphics/epix/flix.1 b/graphics/epix/flix.1
deleted file mode 100644
index 4430a02037..0000000000
--- a/graphics/epix/flix.1
+++ /dev/null
@@ -1 +0,0 @@
-.so man1/epix.1
diff --git a/graphics/epix/flix.in b/graphics/epix/flix.in
deleted file mode 100644
index 5c011ab3af..0000000000
--- a/graphics/epix/flix.in
+++ /dev/null
@@ -1,563 +0,0 @@
-#! /bin/bash
-#
-# flix: Convert ePiX file(s) to png/mng/gif
-#
-# Options: --help for usage, --version for version and license
-#
-# Compiler flags may be specified on the command line or in the config
-# file ~/.epixrc, just as for epix.
-#
-# LaTeX packages may be specified on the command line or in the config
-# file ~/.dvipsrc, just as for elaps
-#
-# Copyright (C) 2004, 2005, 2006, 2007
-# Andrew D. Hwang   <For address, do "flix -V">
-# 
-
-. "@pkglibdir@/epix-lib.sh"
-
-EPIX_CONFIG_FILE="$HOME/.epixrc"
-FLIX_CONFIG_FILE="$HOME/.flixrc"
-
-# Search these extensions in order of preference
-FLIX_EXTENSIONS="flx xp cc c C cpp" # or NULL
-FLIX_DOT_EXT=".${FLIX_EXTENSIONS// /|.}" # for usage message
-
-# Path to standard header and library and compiler
-HDR_PATH="-I@includedir@"
-LIB_PATH="-L@pkglibdir@"
-COMPILER="@RUNTIME_COMPILER@"
-
-# default values
-FLIX_TMAX=1
-FLIX_FRAME_COUNT=24
-FLIX_DELAY=8
-
-# filename variables
-declare FLIX_FRAME    # $EPIX_INROOT-frameXX
-declare FLIX_MOVIE    # actual output filename
-
-FLIX_SUFFIX=mng
-
-# flags
-FLIX_PROGRESS="yes"   # Show progress bar?
-FLIX_ONLY_EEPIC="no"  # Create eepic files only?
-FLIX_ONLY_PNG="no"    # Create png and eepic files only?
-FLIX_SAVE_EEPIC="no"  # Save eepic files after run?
-FLIX_SAVE_PNG="no"    # Save png files after run?
-
-FLIX_FRAME_PAD=""     # zero or more zeros, dep. on number of frames
-FLIX_1ST_FRAME=       # filename, to test success of compile
-
-trap '[ -n "$EPIX_TEMPDIR" ] && rm -rf "$EPIX_TEMPDIR"' 0 1 2 3 7 10 13 15
-
-# options for external programs
-declare -a ELAPS_OPTS
-
-# compiler variables
-declare GXX_INCLUDES
-declare GXX_LIBDIRS
-GXX_LIBS="-lm"
-GXX_POSTLIBS="-lepix"
-declare -a GXX_DEFINES
-
-function flix_help 
-{
-cat <<HELP
-Options:
-    -h, --help
-      Show this message and exit
-
-    -V, --version, --gpl
-      Show version and license
-
-    -v, --verbose
-      Show success/failure messages
-
-    -d, --delay
-      Set frame delay in 1/100 sec (default 8)
-
-    --frames
-      Set number of frames (default 24).
-
-    --gif
-      Create gif output instead of mng
-
-    --no-defaults
-      Do not use default include/library directories or libraries
-
-    --pst
-      Write frames using PSTricks macros (useful only with --save-eepic)
-
-    --tikz
-      Write frames using tikz macros (useful only with --save-eepic)
-
-    --eepic
-      Write frames using eepic macros (useful only with --save-eepic)
-
-    --only-eepic
-      Create only eepic files (default no); implies --save-eepic
-
-    --only-png
-      Create only png files (default no); implies --save-png
-
-    -o, --output
-      Specify output file explicitly (extension optional)
-
-    --save-eepic
-      Save eepic files (default no)
-
-    --save-png
-      Save png files (default no)
-
-    -t, --tmax
-      Set maximum time on animation interval (default 1.0).
-
-    -H, --huge
-      Use hugelatex (if available) to compile frames
-
-    -D*
-      Pass preprocessor definition to the compiler
-
-    -I*, -L*, -l*, -W*, -i*, -u, -x
-      Passed to g++ (q.v.)
-
-    Other options are passed to elaps (q.v.)
-
-HELP
-ePiX_bugreport
-
-} # End of flix_help
-
-
-function flix_pad_init()
-{
-    let TMP_CT=$((FLIX_FRAME_COUNT/10))
-    while [ $TMP_CT -ne 0 ]
-        do 
-            let TMP_CT=$((TMP_CT/10))
-            FLIX_FRAME_PAD="0$FLIX_FRAME_PAD"
-    done
-}
-
-
-# Parse command line/config file for compiler flags/options
-function flix_parse_options 
-{
-while [ "$1" != "${1#-}" ]; do
-    case "$1" in
-
-        -v|--verbose)
-            if [ -z "$2" ]; then 
-                echo "Please use -V for version"
-                exit 0
-            fi
-            EPIX_STDOUT="$SYSTEM_STDOUT"
-            FLIX_PROGRESS="no"
-            shift; continue
-            ;;
-
-        -vv)
-            echo "Discontinued option -vv; please use -v for verbose output"
-            exit 0
-            ;;
-
-        -h|--help)
-	    ePiX_usage flix $FLIX_DOT_EXT
-	    flix_help
-	    exit 0
-	    ;;
-
-        -V|--version|--gpl)
-            ePiX_version flix
-            ePiX_license
-            exit 0
-	    ;;
-
-        -d|--delay)
-        if [ $# -lt 2 ]; then ePiX_die "Missing argument to \"$1\" option"; fi
-            FLIX_DELAY="$2"
-            shift 2; continue
-            ;;
-
-        --frames)
-        if [ $# -lt 2 ]; then ePiX_die "Missing argument to \"$1\" option"; fi
-            FLIX_FRAME_COUNT="$2"
-            shift 2; continue
-            ;;
-
-        --gif)
-            FLIX_SUFFIX=gif
-            shift; continue
-            ;;
-
-        --no-defaults)
-            GXX_POSTLIBS=
-	    HDR_PATH=
-	    LIB_PATH=
-            ELAPS_OPTS=("${ELAPS_OPTS[@]}" "$1")
-            shift; continue
-            ;;
-
-	--pst)
-	    GXX_DEFINES=("${GXX_DEFINES[@]}" "-DEPIX_FMT_PSTRICKS")
-	    shift; continue
-	    ;;
-
-	--tikz)
-	    GXX_DEFINES=("${GXX_DEFINES[@]}" "-DEPIX_FMT_TIKZ")
-	    shift; continue
-	    ;;
-
-	--eepic)
-	    GXX_DEFINES=("${GXX_DEFINES[@]}" "-DEPIX_FMT_EEPIC")
-	    shift; continue
-	    ;;
-
-        --only-eepic)
-            FLIX_ONLY_EEPIC="yes"
-            FLIX_SAVE_EEPIC="yes"
-            shift; continue
-            ;;
-
-        --only-png)
-            FLIX_ONLY_PNG="yes"
-            FLIX_SAVE_PNG="yes"
-            shift; continue
-            ;;
-
-        -o|--output)
-        if [ $# -lt 2 ]; then ePiX_die "Missing argument to \"$1\" option"; fi
-            FLIX_OUTFILE="$2"
-            if [ "$FLIX_OUTFILE" = "${FLIX_OUTFILE%.mng}.mng" ]; then
-                FLIX_SUFFIX=mng
-                EPIX_OUTROOT="${FLIX_OUTFILE%.mng}"
-
-            elif [ "$FLIX_OUTFILE" = "${FLIX_OUTFILE%.gif}.gif" ]; then
-                FLIX_SUFFIX=gif
-                EPIX_OUTROOT="${FLIX_OUTFILE%.gif}"
-
-            else
-                EPIX_OUTROOT="$FLIX_OUTFILE"
-
-            fi
-            shift 2; continue
-            ;;
-
-        # Deliberately undocumented
-        -q|--quiet)
-            EPIX_STDERR="$SYSTEM_DEVNULL"
-            shift; continue
-            ;;
-
-        --save-eepic)
-            FLIX_SAVE_EEPIC="yes"
-            shift; continue
-            ;;
-
-        --save-png)
-            FLIX_SAVE_PNG="yes"
-            shift; continue
-            ;;
-
-        -t|--tmax)
-        if [ $# -lt 2 ]; then ePiX_die "Missing argument to \"$1\" option"; fi
-            FLIX_TMAX="$2"
-            shift 2; continue
-            ;;
-
-        -H|--huge)
-	    ELAPS_OPTS=("${ELAPS_OPTS[@]}" "$1")
-	    shift 1; continue
-            ;;
-
-        -D)
-        if [ $# -lt 2 ]; then ePiX_die "Missing argument to \"$1\" option"; fi
-            if [ "$2" != "${2#-}" ]; then
-                GXX_DEFINES=("${GXX_DEFINES[@]}" "-D$2")
-                shift 2; continue
-            else
-                ePiX_warn "Ignoring option \"$1\" followed by \"$2\""
-                shift 1; continue
-            fi
-            ;;
- 
-        -D*)
-            GXX_DEFINES=("${GXX_DEFINES[@]}" "$1")
-            shift 1; continue
-            ;;
- 
-        -I)
-        if [ $# -lt 2 ]; then ePiX_die "Missing argument to \"$1\" option"; fi
-            GXX_INCLUDES="$GXX_INCLUDES -I$2"; shift 2; continue
-            ;;
-
-        -L)
-        if [ $# -lt 2 ]; then ePiX_die "Missing argument to \"$1\" option"; fi
-            GXX_LIBDIRS="$GXX_LIBDIRS -L$2"; shift 2; continue
-            ;;
-
-        -l)
-        if [ $# -lt 2 ]; then ePiX_die "Missing argument to \"$1\" option"; fi
-            GXX_LIBS="$GXX_LIBS -l$2"; shift 2; continue
-            ;;
-
-        -W)
-        if [ $# -lt 2 ]; then ePiX_die "Missing argument to \"$1\" option"; fi
-            FLIX_WARNS="$FLIX_WARNS -W$2"; shift 2; continue
-            ;;
-
-        -I*)
-            GXX_INCLUDES="$GXX_INCLUDES $1"; shift; continue
-            ;;
-
-        -L*)
-            GXX_LIBDIRS="$GXX_LIBDIRS $1"; shift; continue
-            ;;
-
-        -l*)
-            GXX_LIBS="$GXX_LIBS $1"; shift; continue
-            ;;
-
-        -W*)
-            FLIX_WARNS="$FLIX_WARNS $1"; shift; continue
-            ;;
-
-            # Relatively obscure compiler options
-        -i*|-u|-x)
-        if [ $# -lt 2 ]; then ePiX_die "Missing argument to \"$1\" option"; fi
-            FLIX_FLAGS="$FLIX_FLAGS $1 $2"; shift 2; continue
-            ;;
-
-        *)  # Pass other options to elaps
-        if [ $# -lt 2 ]; then ePiX_die "Missing argument to \"$1\" option"; fi
-            if [ "$2" != "${2#-}" ]; then
-                ELAPS_OPTS=("${ELAPS_OPTS[@]}" "$1")
-                shift 1; continue
-            else
-                ELAPS_OPTS=("${ELAPS_OPTS[@]}" "$1" "$2")
-                shift 2; continue
-            fi
-            ;;
-    esac
-done
-
-# Assume remaining parameters are input files
-FLIX_FILE_LIST=("$@")
-} # End of flix_parse_options
-
-
-# compile infile outfile.exe
-function flix_compile_files()
-{
-    if [ -z "$1" ]; then
-        ePiX_die "No input file specified"
-    fi
-
-    # See epix-lib.sh
-    mkdir "$EPIX_TEMPDIR" || ePiX_die "Can't create \"${EPIX_TEMPDIR}\""
-
-    # file counts
-    local processed=0
-    local success=0
-    local failure=0
-
-    # N.B. Global variables named EPIX_XX
-    for EPIX_INFILE in "${FLIX_FILE_LIST[@]}"; do
-
-        epix_parse_filename "$EPIX_INFILE" "$FLIX_EXTENSIONS"
-        let processed=processed+1
-
-        if [ "$EPIX_NOTFOUND" = "yes" ]; then ePiX_fail && continue ; fi
-
-        : ${EPIX_OUTROOT=$EPIX_INROOT}
-        FLIX_FRAME="$EPIX_OUTROOT"-frame
-
-        # Temporary binary
-        { TEMP_BIN="$EPIX_INROOT" && touch "${EPIX_TEMPDIR}/$TEMP_BIN" ; } ||
-        { ePiX_fail "No write permission in \"${EPIX_TEMPDIR}\"?!" && \
-          continue ; }
-
-        TEMPFILES=("{TEMPFILES[@]}" "${EPIX_TEMPDIR}/$TEMP_BIN")
-
-        # Create symlink to input file with appropriate extension for compiler
-        TEMP_INPUT="${TEMP_BIN}-tmp.cc"
-
-        TEMPFILES=("{TEMPFILES[@]}" "${EPIX_TEMPDIR}/$TEMP_INPUT")
-
-        { cd ${EPIX_TEMPDIR} && \
-            ln -s "../$EPIX_INFILE" "$TEMP_INPUT" && cd .. ; } ||
-          { ePiX_fail "Couldn't create \"${EPIX_TEMPDIR}/$TEMP_INPUT\"" && \
-            continue ; }
-
-        # Compile executable
-        TMP_CMD=($COMPILER "${EPIX_TEMPDIR}/$TEMP_INPUT" $FLIX_WARNS \
-            "${GXX_DEFINES[@]}" -o "${EPIX_TEMPDIR}/$TEMP_BIN" \
-            $HDR_PATH $GXX_INCLUDES $LIB_PATH $GXX_LIBDIRS $GXX_LIBS \
-            $GXX_POSTLIBS $FLIX_FLAGS)
-
-        ePiX_command "${TMP_CMD[@]}"
-
-        # Write animation frames
-        if [ ! -x "${EPIX_TEMPDIR}/$TEMP_BIN" ]; then
-            ePiX_fail "Couldn't compile executable \"${EPIX_TEMPDIR}/$TEMP_BIN\""
-            continue
-        fi
-
-        # purge old files
-        rm -f "$FLIX_FRAME"*.eepic  # eepics always overwritten
-
-        if [ "$FLIX_ONLY_EEPIC" = "no" ]; then
-            # some pngs clobbered => remove all
-            rm -f "$FLIX_FRAME"*.png
-        fi
-
-        # and create new frames
-        for i in $(seq 1 $FLIX_FRAME_COUNT); do
-            flix_png "${EPIX_TEMPDIR}/$TEMP_BIN" $i
-
-            # bomb out if we can't create first new frame
-            if [ ! -f "${FLIX_1ST_FRAME}" ]; then
-                ePiX_fail "Couldn't create frames"
-                continue 2
-            fi
-        done
-
-        if [ "$FLIX_ONLY_PNG" = "no" -a "$FLIX_ONLY_EEPIC" = "no" ]; then
-          FLIX_MOVIE="${EPIX_OUTROOT}.$FLIX_SUFFIX"
-          TMP_CMD=(convert -delay $FLIX_DELAY "$FLIX_FRAME"*.png "$FLIX_MOVIE")
-
-            ePiX_command "${TMP_CMD[@]}"
-
-            if [ -f "$FLIX_MOVIE" ]; then
-                let success=success+1
-            else
-                ePiX_fail "Couldn't assemble frames"
-                continue
-            fi
-        fi
-
-        echo -e "\nTranscript written on $EPIX_LOGFILE" > "$EPIX_STDOUT"
-
-        # clean up
-        if [ "$EPIX_OUTROOT" = "$EPIX_INROOT" ]; then unset EPIX_OUTROOT; fi
-
-        rm -f "$FLIX_FRAME"*.eps "$FLIX_FRAME"*.log
-
-        if [ "$FLIX_SAVE_EEPIC" = "no" ]; then
-            rm -f "$FLIX_FRAME"*.eepic
-        fi
-
-        if [ "$FLIX_SAVE_PNG"   = "no" ]; then
-            rm -f "$FLIX_FRAME"*.png
-        fi
-
-        # Newline after progress bar?
-        if [ "$FLIX_PROGRESS" = "yes" ]; then echo; fi
-
-    done # for EPIX_INFILE in $FLIX_INFILE_LIST
-
-    if [ $processed -gt 1 ]; then
-        echo "$processed files processed: $success movie(s) written, $failure failed" > "$EPIX_STDERR"
-    fi
-
-    if [ -d "$EPIX_TEMPDIR" ]; then rm -Rf "$EPIX_TEMPDIR"; fi
-} # end of flix_compile_files()
-
-
-# Prints ....|....10....|....20
-function progress_bar()
-{
-    if [ $(($1 % 10)) -eq 0 ]; then
-        echo -n "$1"
-    elif [ $(($1 % 5)) -eq 0 ]; then
-        echo -n "|"
-    else
-        echo -n "."
-    fi
-}
-
-
-# Create a single eepic, eps, and/or png file:
-#   flix_png file.exe frame_number
-function flix_png()
-{
-    local TEMP_BIN="$1"
-    local INDEX="$2"
-
-    TIME=$(echo ${FLIX_TMAX}*${INDEX} | bc)
-
-    # Calculate number of 0s in output filename
-    TMP_CT=$(( ${INDEX}/10 ))
-    TMP_PAD="$FLIX_FRAME_PAD"
-
-    # progress bar
-    if [ "$FLIX_PROGRESS" = "yes" ]; then
-        progress_bar $INDEX
-    else
-        ePiX_msg "Frame $INDEX.eps"
-    fi
-
-    # each time we're divisible by ten, remove a 0 from padding
-    while [ $TMP_CT -ne 0 ]
-    do
-        TMP_CT=$(($TMP_CT/10))
-        TMP_PAD="${TMP_PAD%%0}"
-    done
-
-    INDEX="$TMP_PAD$INDEX" # pad with 0s
-    if [ $2 -eq 1 ]; then FLIX_1ST_FRAME="$FLIX_FRAME"${TMP_PAD}1.eepic; fi
-
-    TMP_NAME="${FLIX_FRAME}${INDEX}"
-
-    "./$TEMP_BIN" $TIME $FLIX_FRAME_COUNT > "$TMP_NAME".eepic
-
-    if [ $? -ne 0 ]; then
-        ePiX_warn "Could not create frames"
-        return
-    fi
-
-    if [ "$FLIX_ONLY_EEPIC" = "no" ]; then # create eps
-        TEMPFILES=("{TEMPFILES[@]}" "$TMP_NAME".eps)
-
-        TMP_CMD=(elaps "${ELAPS_OPTS[@]}" -o "$TMP_NAME".eps "$TMP_NAME".eepic)
-        ePiX_command "${TMP_CMD[@]}"
-
-        TMP_CMD=(convert "$TMP_NAME".eps "$TMP_NAME".png)
-        ePiX_command "${TMP_CMD[@]}"
-    fi
-} # end of flix_png()
-
-## Script proper starts here ##
-
-if [ $# -eq 0 ]; then 
-    ePiX_usage flix $FLIX_DOT_EXT
-    flix_help
-    exit 0
-fi
-
-# Read options from config files, if any
-if [ -f "$EPIX_CONFIG_FILE" ]; then
-    cat "$EPIX_CONFIG_FILE" | grep -v "#" | \
-        while read line; do
-            flix_parse_options "$line"
-        done
-fi
-
-if [ -f "$FLIX_CONFIG_FILE" ]; then
-    cat "$FLIX_CONFIG_FILE" | grep -v "#" | \
-        while read line; do
-            flix_parse_options "$line"
-    done
-fi
-
-flix_parse_options "$@"
-
-flix_pad_init
-
-# Suppress all warnings if none are requested
-if [ "$FLIX_WARNS" = "" ]; then FLIX_WARNS="-w"; fi
-
-flix_compile_files "${FLIX_FILE_LIST[@]}"
-
-exit 0
diff --git a/graphics/epix/fmt_template.cc b/graphics/epix/fmt_template.cc
deleted file mode 100644
index 3b7e423070..0000000000
--- a/graphics/epix/fmt_template.cc
+++ /dev/null
@@ -1,177 +0,0 @@
-/*
- * fmt.cc -- ePiX::fmt output format
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.15
- * Last Change: September 08, 2007
- *
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- *
- *
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include <list>
-
-#include <string>
-#include <sstream>
-
-#include <set>
-
-#include "pairs.h"
-#include "edge_data.h"
-
-#include "Color.h"
-
-#include "path_style.h"
-#include "pen_data.h"
-
-#include "format.h"
-#include "fmt.h"
-
-namespace ePiX {
-
-  fmt::fmt() { } // modify as necessary
-
-  fmt* fmt::clone() const
-  {
-    return new fmt(*this);
-  }
-
-  // Filled region with specified Cartesian edges, offset, and color
-  std::string fmt::print_fill(const std::list<edge2d>& edges,
-			      const pair& offset,
-			      const Color& fill,
-			      const pen_data& line,
-			      const std::string& len) const
-  {
-    // Use print_paths to represent a closed polygon bounded by
-    // "edges", drawn with "line" and solid "fill"-ed.
-  }
-
-  // Unfilled region, specified Cartesian edges. Should generally be
-  // trivially implemented using one-pen function (supplied).
-  std::string fmt::print_line(const std::list<edge2d>& edges,
-			      const pair& offset,
-			      const pen_data& line_pen,
-			      const pen_data& base_pen,
-			      const path_state& style,
-			      const std::string& len) const
-  {
-    // Use print_paths (solid) or format::print_edges (otherwise) to
-    // represent a (closed or open) polygon bounded by "edges", drawn
-    // with "line" and "base" pens in the line "style".
-  }
-
-  /*
-   * Default implementations provided, see format.cc. If default works
-   * for the new format, remove these declarations.
-  // Picture start and finish:
-  // Size and offset in page units,
-  // pallet (set of colors contained in the screen),
-  // unitlength
-  std::string fmt::pic_header(const pair& sizes,
-			      const pair& offsets,
-			      const std::set<Color>& pallet,
-			      const std::string& len) const
-  {
-    // Print commands to draw a picture of specified true size and offset
-  }
-
-  std::string fmt::pic_footer() const
-  {
-    // Close/end the picture
-  }
-  */
-
-  // Print color declaration strings: model, name, densities;
-  // may simply return xdefinecolor(...) if appropriate
-  std::string fmt::print_color(const std::string&,
-			       const std::string&,
-			       double,
-			       double,
-			       double) const;
-
-  std::string fmt::print_color(const std::string&,
-			       const std::string&,
-			       double,
-			       double,
-			       double,
-			       double) const;
-
-  // One-line comment
-  std::string fmt::print_comment(const std::string&) const;
-
-  // Verbatim output
-  std::string fmt::print_verbatim(const std::string&) const;
-
-
-  // start/end a picture-like environment, set unit length
-  std::string fmt::start_picture(const pair&, const pair&) const;
-  std::string fmt::end_picture() const;
-
-  std::string fmt::set_unitlength(const std::string& len) const;
-
-  // reset internal state date to null
-  void fmt::reset_state() const;
-
-  //// private member functions ////
-
-  // returns "usepackages" + [SPACE] + "comma-separated LaTeX packages"
-  std::string fmt::usepackages() const
-  {
-    return "usepackages fmt";
-  }
-
-  // string argument for passing attributes local to this path/loop
-  std::string fmt::start_open_path(const std::string&) const;
-  std::string fmt::end_open_path(const std::string&) const;
-
-  std::string fmt::start_closed_path(const std::string&) const;
-  std::string fmt::end_closed_path(const std::string&) const;
-
-  // print declarations to set state of output format
-  std::string fmt::set_fill_state(const Color&) const;
-  std::string fmt::set_pen_state(const pen_data&) const;
-
-  // place a LaTeX box of width zero (containing string) at location (pair)
-  std::string fmt::put_box(const pair&, const std::string&) const;
-
-  // draw a filled or hollow circle of specified diam, color
-  std::string fmt::print_circle_marker(const pair& here, double diam,
-				       bool fill, const Color& color,
-				       const std::string& len) const;
-
-  //// "Optional" (implemented, but reimplementable) functions ////
-  // Used to format line breaks in long paths (e.g. newline and two spaces)
-  // std::string fmt::path_break() const;
-
-  // Used between points in paths (e.g. "" or "--")
-  // std::string fmt::path_connector() const;
-
-  // std::string fmt::print_pallet(const std::set<Color>& pallet) const;
-
-  // Represent a pair, length, or Color as a string
-  // std::string fmt::print(const pair&) const;   // Default: "(a,b)"
-  // std::string fmt::print(const length&) const; // Default: "3.5cm", e.g.
-  // std::string fmt::print(const Color&) const;  // Default: color name
-
-} // end of namespace
diff --git a/graphics/epix/fmt_template.h b/graphics/epix/fmt_template.h
deleted file mode 100644
index a50b3a3855..0000000000
--- a/graphics/epix/fmt_template.h
+++ /dev/null
@@ -1,170 +0,0 @@
-/*
- * fmt.h -- ePiX::fmt output format
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.15
- * Last Change: September 08, 2007
- *
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- *
- *
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-/*
- * To create files foo.h, foo.cc for output format "foo", do
- *
- *   for suff in cc h; do
- *       sed 's/fmt/foo/g' format_template.$suff > foo.$suff
- *   done
- *
- * The include guards and initial comments should be updated manually.
- */
-
-#ifndef EPIX_FMT
-#define EPIX_FMT
-
-#include <set>
-#include <list>
-#include <string>
-
-#include "edge_data.h"
-
-namespace ePiX {
-
-  class Color;
-  class pair;
-  class path_state;
-  class pen_data;
-
-  class fmt : public format {
-  public:
-
-    fmt(); // some constructor mandatory, needn't have this signature
-
-    // Return a copy of this
-    fmt* clone() const;
-
-    // Filled region with specified Cartesian edges, offset, and color
-    std::string print_fill(const std::list<edge2d>& edges,
-			   const pair& offset,
-			   const Color& fill,
-			   const pen_data& line,
-			   const std::string& len) const;
-
-    // Unfilled region, specified Cartesian edges. Should generally be
-    // trivially implemented using one-pen function (supplied).
-    std::string print_line(const std::list<edge2d>& edges,
-			   const pair& offset,
-			   const pen_data& line_pen,
-			   const pen_data& base_pen,
-			   const path_state& style,
-			   const std::string& len) const;
-
-    /*
-     * Picture start and finish:
-     * Size and offset in page units,
-     * pallet (set of colors contained in the screen),
-     * unitlength
-     *
-     * These functions have default implementations, see format.cc.
-     * If the new format can use the default implementation, these
-     * functions declarations should be removed.
-     *
-    std::string pic_header(const pair& sizes,
-			   const pair& offsets,
-			   const std::set<Color>& pallet,
-			   const std::string& len) const;
-
-    std::string pic_footer() const;
-    */
-
-    // Print color declaration strings: model, name, densities
-    std::string print_color(const std::string&,
-			    const std::string&,
-			    double,
-			    double,
-			    double) const;
-
-    std::string print_color(const std::string&,
-			    const std::string&,
-			    double,
-			    double,
-			    double,
-			    double) const;
-
-    // One-line comment
-    std::string print_comment(const std::string&) const;
-
-    // Verbatim output
-    std::string print_verbatim(const std::string&) const;
-
-
-    // begin and end a picture-like environment, set the unit length
-    std::string start_picture(const pair&, const pair&) const;
-    std::string end_picture() const;
-
-    std::string set_unitlength(const std::string& len) const;
-
-    // State data, if any, must be mutable
-    void reset_state() const;
-
-  private:
-
-    std::string usepackages() const;
-
-    // string argument for passing attributes local to this path/loop
-    std::string start_open_path(const std::string&) const;
-    std::string end_open_path(const std::string&) const;
-
-    std::string start_closed_path(const std::string&) const;
-    std::string end_closed_path(const std::string&) const;
-
-    // print declarations to set state of output format
-    std::string set_fill_state(const Color&) const;
-    std::string set_pen_state(const pen_data&) const;
-
-    // place a LaTeX box of width zero (containing string) at location (pair)
-    std::string put_box(const pair&, const std::string&) const;
-
-    // draw a filled or hollow circle of specified diam, color
-    std::string print_circle_marker(const pair& here, double diam,
-				    bool fill, const Color& color,
-				    const std::string& len) const;
-
-    //// "Optional" (implemented, but reimplementable) functions ////
-    // inserted in long paths, defaults to <newline> and two spaces
-    // std::string path_break() const;
-
-    // inserted between path points, deaults to ""
-    // std::string path_break() const;
-
-    // std::string print_pallet(const std::set<Color>&) const;
-
-    // Represent a pair, length, or Color as a string
-    // std::string print(const pair&) const;   // Default: "(a,b)"
-    // std::string print(const length&) const; // Default: "3.5cm", e.g.
-    // std::string print(const Color&) const;  // Default: color name
-
-  }; // end of class fmt
-} // end of namespace
-
-#endif /* EPIX_FMT */
diff --git a/graphics/epix/format.cc b/graphics/epix/format.cc
deleted file mode 100644
index f799baa7a4..0000000000
--- a/graphics/epix/format.cc
+++ /dev/null
@@ -1,720 +0,0 @@
-/*
- * format.cc -- ePiX output format interface and label-writing functions
- *
- * This file is part of ePiX, a c++ library for creating high-quality
- * figures in LaTeX
- *
- * Version 1.2.0-2
- * Last Change: September 26, 2007
- */
-
-/*
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- *
- */
- 
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#include <cmath>
-#include <string>
-#include <sstream>
-#include <vector>
-#include <list>
-
-#include "enums.h"
-#include "constants.h"
-
-#include "errors.h"
-#include "utils.h"
-
-#include "functions.h"
-
-#include "marker_style.h"
-#include "label_style.h"
-#include "path_style.h"
-#include "Color.h"
-
-#include "pen_data.h"
-
-#include "pairs.h"
-#include "edge_data.h"
-
-#include "length.h"
-
-#include "picture.h" // circ may need to add White to pallet
-#include "picture_data.h"
-
-#include "format.h"
-
-namespace ePiX {
-  // public, non-virtual
-  // LaTeX label-generating commands written in terms of protected interface
-  std::string format::print_mark(const pair& here, const pair& offset,
-				 const epix_mark_type mk,
-				 const marker_sizes& sz,
-				 const label_state& style,
-				 const std::string& len) const
-  {
-    // convert dotsize to len
-    length true_diam(sz.dot_size());
-    double diam(true_diam.to(len).magnitude());
-
-    // set diameter
-    if (mk == DOT || mk == CIRC)
-      diam *= 0.75;
-    else if (mk == DDOT)
-      diam *= 0.5;
-
-    // and print
-    if (mk == SPOT || mk == DOT || mk == DDOT)
-      return print_circle_marker(here + pt_to_len(offset, len), diam, true,
-				 style.text_color(), len);
-
-    else if (mk == CIRC) // Draw filled dot, then ring
-      {
-	Color bk(style.mask_color());
-	// use White for unset mask
-	if (bk.is_unset())
-	  {
-	    bk = White();
-	    the_picture().add_to_pallet(bk);
-	  }
-
-	return print_circle_marker(here + pt_to_len(offset, len), diam, true,
-				   bk, len)
-	  + print_circle_marker(here + pt_to_len(offset, len), diam, false,
-				style.text_color(), len);
-      }
-
-    else if (mk == RING)
-      return print_circle_marker(here + pt_to_len(offset, len), diam, false,
-				 style.text_color(), len);
-
-    else
-      return put_box(here + pt_to_len(offset, len),
-		     print_latex_label(style, print_latex_marker(mk, sz, len),
-				       false)); // no mask or box
-  }
-
-  // public, non-virtual
-  std::string format::print_text(const pair& here, const pair& offset,
-				 const std::string& label,
-				 const label_state& style,
-				 const std::string& len) const
-  {
-    return put_box(here + pt_to_len(offset, len),
-		   print_latex_label(style, label, true));
-  }
-
-
-  // public, non-virtual
-  std::string format::print_line(const edge2d& e,
-				 const pair& offset,
-				 const pen_data& line,
-				 const pen_data& base,
-				 const path_state& style,
-				 const std::string& len) const
-  {
-    if ((line.width() < length(EPIX_EPSILON))
-	|| (line.color().is_unset())
-	|| !e.is_seen() )
-      return "";
-
-    // else
-    std::list<edge2d> edges;
-    edges.push_back(e);
-    return print_line(edges, offset, line, base, style, len);
-  }
-
-
-  // public, non-virtual (file header comment block)
-  std::string format::file_comments(const std::string& units,
-				    const length& hoffset,
-				    const length& voffset,
-				    double Xmin, double Xmax,
-				    double Ymin, double Ymax,
-				    double Hsize, double Vsize) const
-  {
-    std::ostringstream obuf;
-
-    const std::string hoff_dir(length(0) < hoffset ? "right" : "left");
-    const std::string voff_dir(length(0) < voffset ? "up" : "down");
-
-    const double hoff(hoffset.magnitude());
-    const double voff(voffset.magnitude());
-
-    std::stringstream bd_box, act_sz, fg_off;
-    bd_box << "  Cartesian bounding box: ["
-	   << Xmin << "," << Xmax << "] x [" << Ymin << "," << Ymax<< "]";
-
-    act_sz << "  Actual size: " << Hsize << " x " << Vsize << units;
-
-    fg_off << "  Figure offset: "
-	   << hoff_dir << " by " << hoff << units << ", "
-	   << voff_dir << " by " << voff << units;
-
-    obuf << print_comment("ePiX-" + epix_version())
-	 << print_comment("")
-	 << print_comment(bd_box.str())
-	 << print_comment(act_sz.str())
-	 << print_comment(fg_off.str())
-	 << print_comment("")
-	 << print_comment(usepackages())
-	 << print_comment("");
-
-    return obuf.str();
-  } // end of file_comments()
-
-
-  // public, virtual
-  std::string format::pic_header(const pair& sizes,
-				 const pair& offsets,
-				 const std::set<Color>& pallet,
-				 const std::string& len) const
-  {
-    std::stringstream obuf;
-    obuf << print_pallet(pallet)
-	 << set_unitlength(len)
-	 << start_picture(sizes, offsets);
-
-    return obuf.str();
-  }
-
-  // public, virtual
-  std::string format::pic_footer() const
-  {
-    return end_picture();
-  }
-
-  // public, non-virtual
-  std::string format::print_color(const std::string& model,
-				  const std::string& name,
-				  const std::vector<double>& dens) const
-  {
-    if (dens.size() == 3)
-      return print_color(model, name, dens.at(0), dens.at(1), dens.at(2));
-
-    else if (dens.size() == 4)
-      return print_color(model, name,
-			 dens.at(0), dens.at(1), dens.at(2), dens.at(3));
-
-    else if (dens.size() == 0) // Neutral()
-      return "";
-
-    else
-      {
-	epix_warning("format::print_color(): Internal error");
-	return print_color("rgb", "rgb_000000", 0, 0, 0);
-      }
-  }
-
-  // protected, non-virtual (one-pen version)
-  std::string format::print_line(const std::list<edge2d>& edges,
-				 const pair& offset, const pen_data& line,
-				 const path_state& style,
-				 const std::string& attribs,
-				 const std::string& len) const
-  {
-    if ( (line.width() < length(EPIX_EPSILON))
-	 || (line.color().is_unset())
-	 || edges.begin() == edges.end() )
-      return "";
-
-    // else
-    std::stringstream value, obuf;
-
-    obuf << set_pen_state(line);
-
-    if (style.is_solid())
-      obuf << print_paths(edges, offset, attribs, len);
-
-    else // not solid
-      {
-	// compute diameter of dots
-	length lw(line.width());
-	lw.to(len);
-
-	// compute unit length in pt
-	length units("1"+len);
-	units.to("pt");
-	double in_pt(units.magnitude());
-
-	double pattern_size(style.separation()); // in pt
-
-	// split each edge into pattern_size chunks if necessary
-	for (std::list<edge2d>::const_iterator ep = edges.begin();
-	     ep != edges.end(); ++ep)
-	  {
-	    double curr_len(((*ep).length())*in_pt);
-
-	    // number of dash patterns *ep can hold
-	    unsigned int N((unsigned int) ceil(curr_len/pattern_size));
-	    if (N == 1)
-	      obuf << print_edge((*ep), offset, style.breakpts(),
-				 lw.magnitude(), line.color(), attribs, len);
-
-	    if (N > 1)
-	      {
-		pair T((*ep).tail()), dir((1.0/N)*((*ep).head() - T));
-		for (unsigned int i=0; i<N; ++i)
-		  obuf << print_edge(edge2d(T+i*dir, T+(i+1)*dir,
-					    (*ep).is_seen()),
-				     offset, style.breakpts(),
-				     lw.magnitude(), line.color(),
-				     attribs, len);
-	      }
-	  }
-      } // end of !solid
-
-    return obuf.str();
-  } // end of print_line(edges, offset, line, style, attribs, len)
-
-
-  std::string format::print_line(const edge2d& e,
-				 const pair& offset,
-				 const pen_data& line,
-				 const path_state& style,
-				 const std::string& attribs,
-				 const std::string& len) const
-  {
-    if ( (line.width() < length(EPIX_EPSILON)) ||
-         (line.color().is_unset()) ||
-         !e.is_seen() )
-      return "";
-
-    std::list<edge2d> edges;
-    edges.push_back(e);
-    return print_line(edges, offset, line, style, attribs, len);
-  }
-
-
-  // local to this file
-  std::string __epix_rule(double x, double y)
-  {
-    std::stringstream buf;
-    buf << "\\rule{" << x << "pt}{" << y << "pt}";
-
-    return buf.str();
-  }
-
-
-  // protected, non-virtual
-  std::string format::xdefinecolor(const std::string& model,
-				   const std::string& name,
-				   double d1, double d2, double d3) const
-  {
-    std::stringstream obuf;
-    obuf << "\\xdefinecolor{" << name << "}";
-
-    if (model == "cmy")
-      {
-	double bk(min(min(d1,d2),d3));
-
-	obuf << "{cmyk}{"
-	     << d1-bk << "," << d2-bk << "," << d3-bk << "," << bk << "}%"
-	     << std::endl;
-      }
-
-    else
-      obuf << "{" << model << "}{" << d1 << "," << d2 << "," << d3 << "}%"
-	   << std::endl;
-
-    return obuf.str();
-  }
-
-  // protected, non-virtual
-  std::string format::xdefinecolor(const std::string& model,
-				   const std::string& name,
-				   double d1, double d2,
-				   double d3, double d4) const
-  {
-    std::stringstream obuf;
-    obuf << "\\xdefinecolor{" << name << "}{cmyk}{"
-	 << d1 << "," << d2 << "," << d3 << "," << d4 << "}%"
-	 << std::endl;
-
-    return obuf.str();
-  }
-
-  // protected, virtual
-  std::string format::print_pallet(const std::set<Color>& pallet) const
-  {
-    std::stringstream obuf;
-
-    for (std::set<Color>::const_iterator cp=pallet.begin();
-	 cp!=pallet.end(); ++cp)
-      obuf << print_color((*cp).model(), (*cp).name(), (*cp).densities());
-
-    return obuf.str();
-  }
-
-  // protected, virtual
-  std::string format::print(const pair& arg) const
-  {
-    std::stringstream o;
-    o << "(" << truncate(arg.x1()) << "," << truncate(arg.x2()) << ")";
-    return o.str();
-  }
-
-  // protected, virtual
-  std::string format::print(const length& len) const
-  {
-    return len.name();
-  }
-
-  // protected, virtual
-  std::string format::print(const Color& col) const
-  {
-    return col.name();
-  }
-
-  // protected, non-virtual (print non-solid edge as segments and dots)
-  std::string format::print_edge(const edge2d& edge, const pair& offset,
-				 const std::vector<double> bkpts,
-				 double diam, const Color& col,
-				 const std::string& attribs,
-				 const std::string& len) const
-  {
-    if (!edge.is_seen())
-      return "";
-
-    if (bkpts.size() % 2 != 0)
-      {
-        epix_warning("Internal error in path pattern");
-        return "";
-      }
-
-    // else
-    std::stringstream obuf;
-
-    const pair T(edge.tail() + pt_to_len(offset, len));
-    const pair dir(edge.head() - edge.tail());
-
-    for (unsigned int i=0; i < bkpts.size(); i += 2)
-      {
-        double curr(bkpts.at(i)), next(bkpts.at(i+1));
-
-        if (EPIX_EPSILON < next - curr) // dash
-	  obuf << start_open_path(attribs)
-	       << print(T + curr*dir)
-	       << path_connector()
-	       << print(T + next*dir)
-	       << end_open_path(attribs);
-
-        else // dot
-	  obuf << print_circle_marker(T + curr*dir, diam, true, col, len);
-      }
-
-    return obuf.str();
-  }
-
-
-  // protected, non-virtual (solid path, handle (offset) data only)
-  std::string format::print_paths(const std::list<edge2d>& edges,
-				  const pair& offset,
-				  const std::string& attribs,
-				  const std::string& len) const
-  {
-    std::stringstream obuf;
-
-    std::list<edge2d>::const_iterator ep(edges.begin());
-
-    const pair shift(pt_to_len(offset, len));
-
-    bool all_visible(true); // all edges visible?
-
-    // Assume not for now
-    const std::string pname(start_open_path(attribs));
-
-    // print contiguous lists of visible edges
-    while (ep != edges.end())
-      {
-	if ((*ep).is_seen()) // print contiguous visible path
-	  {
-	    obuf << pname
-		 << print((*ep).tail() + shift)
-		 << path_connector()
-		 << print((*ep).head() + shift);
-	    ++ep;
-
-	    while ((*ep).is_seen() && ep != edges.end())
-	      obuf << path_connector() << print((*ep++).head() + shift);
-
-	    obuf << end_open_path(attribs);
-	  }
-
-	else // invisible edge
-	  {
-	    ++ep;
-	    all_visible = false;
-	  }
-      }
-
-    std::string value(obuf.str());
-
-    --ep; // last edge
-
-    // if we're a closed loop of visible edges, adjust open/close path
-    if (all_visible && (*edges.begin()).tail() == (*ep).head())
-      {
-	value.replace(0,
-		      start_open_path(attribs).size(),
-		      start_closed_path(attribs));
-    
-	value.replace(value.size()-end_open_path(attribs).size(),
-		      end_open_path(attribs).size(),
-		      end_closed_path(attribs));
-      }
-
-    return break_lines(value, path_break());
-  }
-
-
-  //// Label and marker functions ////
-  // protected, non-virtual (print LaTeX command for marker of specified size)
-  std::string format::print_latex_marker(const epix_mark_type mark,
-					 const marker_sizes& sz,
-					 const std::string& len) const
-  {
-    std::stringstream obuf;
-
-    obuf << "$";
-
-    switch(mark)
-      {
-      case PLUS:
-	obuf << "+";
-	break;
-      case OPLUS:
-	obuf << "\\oplus";
-	break;
-      case TIMES:
-	obuf << "\\times";
-	break;
-      case OTIMES:
-	obuf << "\\otimes";
-	break;
-      case DIAMOND:
-	obuf << "\\diamond";
-	break;
-      case UP:
-	obuf << "\\bigtriangleup";
-	break;
-      case DOWN:
-	obuf << "\\bigtriangledown";
-	break;
-      case BOX:
-	obuf << __epix_rule(0.75*sz.dot_size(), 0.75*sz.dot_size());
-	break;
-      case BBOX:
-	obuf << __epix_rule(0.5*sz.dot_size(), 0.5*sz.dot_size());
-	break;
-      case HTICK:
-	obuf << __epix_rule(0.5, 2*sz.tick_size());
-	break;
-      case VTICK:
-	obuf << __epix_rule(2*sz.tick_size(), 0.5);
-	break;
-	// should never see these cases
-      case SPOT:
-      case DOT:
-      case DDOT:
-      case CIRC:
-      case RING:
-	epix_warning("Mark type internal error"); // fall through
-      case PATH: // fall through
-      case TEXT:
-      default:
-	return ""; // N.B. return
-      }
-
-    obuf << "$";
-
-    return obuf.str();
-  }
-
-
-  // public, non-virtual
-  // handles font face, size, and color
-  std::string format::print_latex_hbox(const label_state& style,
-				       const std::string& label) const
-  {
-    std::stringstream text_buf;
-
-    bool need_ff(style.fontface() != "rm");  // roman
-    bool need_fs(style.fontsize() != "nsz"); // normalsize
-
-    text_buf << "\\hbox{\\color{" << print(style.text_color()) << "}";
-
-    if (need_ff)
-      text_buf << "\\text" << style.fontface() << "{";
-
-    if (need_fs)
-      text_buf << "\\" << style.fontsize() << " ";
-
-    text_buf << label;
-
-    if (need_ff)
-      text_buf << "}";
-
-    text_buf << "}";
-
-    return text_buf.str();
-  }
-
-
-  // protected, virtual
-  std::string format::path_break() const
-  {
-    std::stringstream buf;
-    buf << std::endl << "  ";
-
-    return buf.str();
-  }
-
-  // inserted between points of a path
-  std::string format::path_connector() const
-  {
-    return "";
-  }
-
-  // protected, non-virtual
-  // handles rotation, masking, border, and alignment
-  std::string format::print_latex_label(const label_state& style,
-					const std::string& label,
-					bool boxed) const
-  {
-    std::stringstream obuf;
-
-    // need rotatebox?
-    bool rotated(EPIX_EPSILON < fabs(style.label_angle()));
-
-    // need colorbox?
-    bool masked(boxed && style.is_masked());
-
-    // need extra fcolorbox?
-    bool padded(style.label_padding() != length(0));
-
-    obuf << "\\makebox(0,0)"
-	 << print(style.align_to()); // "none" -> ""
-
-    obuf << "{";
-
-    if (rotated)
-      obuf << "\\rotatebox{" << style.label_angle() << "}{";
-
-    if (masked)
-      {
-	pen_data bpen(style.label_border());
-
-	// draw border?
-	if (!bpen.color().is_unset() && length(EPIX_EPSILON) < bpen.width())
-	  obuf << "\\fboxrule" << print(bpen.width()) << "%" << std::endl
-	       << "\\fcolorbox{" << print(bpen.color()) << "}{"
-	       << print(style.mask_color()) << "}";
-
-	else
-	  obuf << "\\colorbox{" << print(style.mask_color()) << "}";
-
-	if (padded)
-	  {
-	    // cancel off the xcolor default
-	    length extra_pad(style.label_padding() + length(-3));
-
-	    obuf << "{\\fboxrule" << print(extra_pad) << "%" << std::endl
-		 << "\\fcolorbox{" << print(style.mask_color()) << "}{"
-		 << print(style.mask_color()) << "}";
-	  }
-
-	obuf << "{";
-      }
-
-    // finally, the payload
-    obuf << print_latex_hbox(style, label);
-
-    // close wrappers
-    if (masked)
-      {
-	obuf << "}";
-
-	if (padded)
-	  obuf << "}";
-      }
-
-    if (rotated)
-      obuf << "}";
-  
-    obuf << "}";
-
-    return obuf.str();
-  } // end of print_latex_label
-
-  // private (convert an epix_label_posn to a string)
-  std::string format::print(const epix_label_posn arg) const
-  {
-    std::string val;
-    switch(arg) 
-      {
-      case none:
-	return ""; // other cases return at bottom
-
-      case c:
-	val="c";
-	break;
-      case r:
-	val="l"; // opposite of LaTeX
-	break;
-      case tr:
-      case rt:
-	val="bl";
-	break;
-      case t:
-	val="b";
-	break;
-      case tl:
-      case lt:
-	val="br";
-	break;
-      case l:
-	val="r";
-	break;
-      case bl:
-      case lb:
-	val="tr";
-	break;
-      case b:
-	val="t";
-	break;
-      case br:
-      case rb:
-	val="tl";
-	break;
-      }
-
-    return "[" + val + "]";
-  } // end of format::print(align_type)
-
-
-  // private (true pt offset to len)
-  pair format::pt_to_len(pair offset, const std::string& len) const
-  {
-    return offset *= length("1pt").to(len).magnitude();
-  }
-} // end of namespace
diff --git a/graphics/epix/format.h b/graphics/epix/format.h
deleted file mode 100644
index 7432526ac9..0000000000
--- a/graphics/epix/format.h
+++ /dev/null
@@ -1,300 +0,0 @@
-/*
- * format.h -- ePiX::output format interface
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.17
- * Last Change: September 13, 2007
- *
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- *
- *
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-/*
- * This file defines ePiX's output interface. The fmt_template
- * files contain skeleton code for a new format. The command
- *
- *   for suff in cc h; do
- *       sed 's/fmt/foo/g' fmt_template.$suff > foo.$suff
- *   done
- *
- * (or manual search-and-replace) creates "blank" files containing
- * declarations and pseudocode. (The include guards should also be
- * changed.) Please consult pst.cc and eepic.cc for complete examples.
- *
- * The pure virtual functions in this file *must* be implemented by
- * derived classes. They are signified by the keyword "virtual" and
- * the definition "= 0" after their declaration. They are also found
- * in the skeleton class mentioned above.
- *
- * The seven ordinary virtual functions (the destructor, pic_header and
- * pic_footer, and four low-level functions for printing a pallet, pair,
- * Color, or length) _may_ be overridden by derived classes, but will
- * not be (unless the format has unusual conventions).
- *
- * No other functions should be re-implemented by derived classes.
- */
-
-#ifndef EPIX_FORMAT
-#define EPIX_FORMAT
-
-#include <set>
-#include <list>
-#include <vector>
-#include <string>
-
-#include "enums.h"
-#include "edge_data.h"
-
-namespace ePiX {
-
-  class Color;
-  class label_state;
-  class length;
-
-  class marker_sizes;
-  class pair;
-  class path_state;
-  class pen_data;
-
-  class format {
-  public:
-    // Free resources allocated by the constructor (usually unnecessary)
-    virtual ~format() { }
-
-    // Return a copy of this
-    virtual format* clone() const = 0;
-
-
-    // LaTeX symbol with specified location, offset and alignment
-    std::string print_mark(const pair& location,
-			   const pair& offset,
-			   const epix_mark_type mark,
-			   const marker_sizes& sizes,
-			   const label_state& style,
-			   const std::string& len) const;
-
-    // Label text with specified location, offset, and alignment
-    std::string print_text(const pair& location,
-			   const pair& offset,
-			   const std::string& text,
-			   const label_state& style,
-			   const std::string& len) const;
-
-
-    // Filled region with specified Cartesian edges, offset, and color
-    virtual std::string print_fill(const std::list<edge2d>& edges,
-				   const pair& offset,
-				   const Color& fill,
-				   const pen_data& line,
-				   const std::string& len) const = 0;
-
-
-    // Unfilled region, specified Cartesian edges. Should generally be
-    // trivially implemented using one-pen function (supplied).
-    virtual std::string print_line(const std::list<edge2d>& edges,
-				   const pair& offset,
-				   const pen_data& line_pen,
-				   const pen_data& base_pen,
-				   const path_state& style,
-				   const std::string& len) const = 0;
-
-    // implemented using previous function
-    std::string print_line(const edge2d&,
-			   const pair&,
-			   const pen_data&,
-			   const pen_data&,
-			   const path_state&,
-			   const std::string&) const;
-
-
-    // File comment and information block
-    std::string file_comments(const std::string& units,
-			      const length& hoff,
-			      const length& voff,
-			      double Xmin, double Xmax,
-			      double Ymin, double Ymax,
-			      double Hsize, double Vsize) const;
-
-
-    // Picture start and finish:
-    // Size and offset in page units,
-    // pallet (set of colors contained in the screen),
-    // unitlength
-    virtual std::string pic_header(const pair& sizes,
-				   const pair& offsets,
-				   const std::set<Color>& pallet,
-				   const std::string& len) const;
-
-    virtual std::string pic_footer() const;
-
-
-    // Print color declaration strings: model, name, densities
-    std::string print_color(const std::string&,
-			    const std::string&,
-			    const std::vector<double>&) const;
-
-    // One-line comment
-    virtual std::string print_comment(const std::string&) const = 0;
-
-    // Verbatim output
-    virtual std::string print_verbatim(const std::string&) const = 0;
-
-
-    // print text with color, font in an hbox
-    std::string print_latex_hbox(const label_state& style,
-				 const std::string& label) const;
-
-    // Derived classes use functions below to implement the public interface.
-    // The first two are needed to print screen_data for legend items.
-    virtual std::string start_picture(const pair&, const pair&) const = 0;
-    virtual std::string end_picture() const = 0;
-
-    virtual std::string set_unitlength(const std::string& len) const = 0;
-
-    // If child maintains drawing state, this function clears it.
-    virtual void reset_state() const = 0;
-
-  protected:
-    // inserted between points when breaking lines
-    virtual std::string path_break() const;
-    // inserted between points of a path
-    virtual std::string path_connector() const;
-
-    // names of LaTeX packages required to process our output
-    virtual std::string usepackages() const = 0;
-
-    // string argument for passing attributes local to this path/loop
-    virtual std::string start_open_path(const std::string&) const = 0;
-    virtual std::string end_open_path(const std::string&) const = 0;
-
-    virtual std::string start_closed_path(const std::string&) const = 0;
-    virtual std::string end_closed_path(const std::string&) const = 0;
-
-    // print declarations to set state of output format
-    virtual std::string set_fill_state(const Color&) const = 0;
-    virtual std::string set_pen_state(const pen_data&) const = 0;
-
-    // place a LaTeX box of width zero (containing string) at location (pair)
-    virtual std::string put_box(const pair&, const std::string&) const = 0;
-
-    // too idiosyncratic to handle format-independently
-    virtual std::string print_circle_marker(const pair& here, double diam,
-					    bool fill, const Color& color,
-					    const std::string& len) const = 0;
-
-    // xcolor definition strings
-    std::string xdefinecolor(const std::string&,
-			     const std::string&,
-			     double,
-			     double,
-			     double) const;
-
-    std::string xdefinecolor(const std::string&,
-			     const std::string&,
-			     double,
-			     double,
-			     double,
-			     double) const;
-
-    virtual std::string print_color(const std::string&,
-				    const std::string&,
-				    double,
-				    double,
-				    double) const = 0;
-
-    virtual std::string print_color(const std::string&,
-				    const std::string&,
-				    double,
-				    double,
-				    double,
-				    double) const = 0;
-
-    // Define all colors in the picture
-    virtual std::string print_pallet(const std::set<Color>& pallet) const;
-
-    // Represent a pair, length, or Color as a string
-    virtual std::string print(const pair&) const;   // Default: "(a,b)"
-    virtual std::string print(const length&) const; // Default: "3.5cm", e.g.
-    virtual std::string print(const Color&) const;  // Default: color name
-
-
-    // one-pen version
-    std::string print_line(const std::list<edge2d>& edges,
-			   const pair& offset,
-			   const pen_data& line,
-			   const path_state& style,
-			   const std::string& attribs,
-			   const std::string& len) const;
-
-    // for single edge; wrap in list and pass to previous function
-    std::string print_line(const edge2d& e,
-			   const pair& offset,
-			   const pen_data& line,
-			   const path_state& style,
-			   const std::string& attribs,
-			   const std::string& len) const;
-
-    // Print a non-solid edge, using the virtual interface
-    std::string print_edge(const edge2d& edge, const pair& offset,
-			   const std::vector<double> bkpts,
-			   double diam,
-			   const Color& col,
-			   const std::string& attribs,
-			   const std::string& len) const;
-
-    // Print an edge list as offset path segments, or as a loop
-    // if all edges are visible and path is closed.
-    std::string print_paths(const std::list<edge2d>& edges,
-			    const pair& offset,
-			    const std::string& attribs,
-			    const std::string& len) const;
-
-    /*
-     * Text in an ePiX output file is assumed to be typeset with
-     * LaTeX.  The functions below perform LaTeX-specific low-level
-     * formatting.  For uniformity and simplicity, these functions are
-     * format-independent: Implementations are provided and these
-     * functions are non-virtual. Format-specific masking, padding,
-     * and bordering capabilities (e.g. in PSTricks) are not used.
-     */
-    // label style, text, masking flag
-    std::string print_latex_label(const label_state&,
-				  const std::string&,
-				  bool) const;
-
-    // Print LaTeX command for marker symbol; 3rd (len) argument for scaling
-    std::string print_latex_marker(const epix_mark_type,
-				   const marker_sizes&,
-				   const std::string&) const;
-
-  private:
-    // convert an epix_label_posn to string
-    std::string print(const epix_label_posn arg) const;
-
-    // convert true pt offset to len
-    pair pt_to_len(pair offset, const std::string& len) const;
-
-  }; // end of base class format
-} // end of namespace
-
-#endif /* EPIX_FORMAT */
diff --git a/graphics/epix/frac.cc b/graphics/epix/frac.cc
deleted file mode 100644
index 6fadd246af..0000000000
--- a/graphics/epix/frac.cc
+++ /dev/null
@@ -1,262 +0,0 @@
-/* 
- * frac.cc -- ePiX rational number class
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.2.0-2
- * Last Change: September 26, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#include <cmath>
-
-#include "frac.h"
-
-namespace ePiX {
-
-  const int MAX_DENOM(10000);
-  const double EPS(1.0/MAX_DENOM);
-
-  unsigned int __epix_gcd (int i, unsigned int j);
-
-  frac::frac(const int n, const unsigned int d)
-    : m_num(n), m_denom(d) { }
-
-  // express arg as a fraction with denominator no larger than MAX_DENOM
-  frac::frac(double arg)
-  {
-    unsigned int denom(1);
-    if (fabs(arg) < EPS)
-      {
-	m_num = 0;
-	m_denom = 1;
-      }
-
-    else
-      {
-	int sgn(arg < 0 ? -1 : 1);
-	double abs_arg(sgn*arg);
-
-	// store best approximation
-	int best_num(0);
-	double running_error(0.5);
-
-	while (denom <= 1+MAX_DENOM)
-	  {
-	    const double tmp(abs_arg*denom);
-
-	    int tmp_lo((int) floor(tmp));
-
-	    if (tmp - tmp_lo < EPS) // good approx
-	      {
-		best_num = tmp_lo;
-		break;
-	      }
-
-	    else if (tmp - tmp_lo < running_error) // improved approx
-	      {
-		best_num = tmp_lo;
-		running_error = tmp - best_num;
-	      }
-
-	    int tmp_hi((int) ceil(tmp));
-	    if (tmp_hi - tmp < EPS)
-	      {
-		best_num = tmp_hi;
-		break;
-	      }
-
-	  else if (tmp_hi - tmp < running_error)
-	    {
-	      best_num = tmp_hi;
-	      running_error = best_num - tmp;
-	    }
-
-	    ++denom;
-	  }
-
-	m_num = sgn*best_num;
-	m_denom = denom;
-      }
-  } // end of frac::frac(double arg)
-
-
-  // increment operators
-  frac& frac::operator += (const frac& arg)
-  {
-    m_num *= arg.m_denom;
-    m_num += m_denom*arg.m_num;
-    m_denom *= arg.m_denom;
-
-    return *this;
-  }
-
-  frac& frac::operator -= (const frac& arg)
-  {
-    m_num *= arg.m_denom;
-    m_num -= m_denom*arg.m_num;
-    m_denom *= arg.m_denom;
-
-    return *this;
-  }
-
-  frac& frac::operator *= (const frac& arg)
-  {
-    m_num *= arg.m_num;
-    m_denom *= arg.m_denom;
-
-    return *this;
-  }
-
-  frac& frac::operator /= (const frac& arg)
-  {
-    unsigned int arg_num(arg.m_num < 0 ? -arg.m_num : arg.m_num);
-
-    m_num *= arg.m_denom;
-    m_denom *= arg_num;
-
-    if (arg.m_num < 0)
-      m_num = -1;
-
-    return *this;
-  }
-
-  frac& frac::reduce()
-  {
-    unsigned int factor(__epix_gcd(m_num, m_denom));
-    m_num /= factor;
-    m_denom /= factor;
-
-    return *this;
-  }
-
-  double frac::eval() const
-  {
-    double temp(m_num);
-    return temp /= m_denom;
-  }
-
-  int frac::num() const
-  {
-    return m_num;
-  }
-
-  unsigned int frac::denom() const
-  {
-    return m_denom;
-  }
-
-  bool frac::is_int() const
-  {
-    return __epix_gcd(m_num, m_denom) == m_denom;
-  }
-
-
-  frac operator+ (frac arg1, const frac& arg2)
-  {
-    return arg1 += arg2;
-  }
-
-  frac operator- (frac arg1)
-  {
-    return arg1 *= -1;
-  }
-
-  frac operator- (frac arg1, const frac& arg2)
-  {
-    return arg1 -= arg2;
-  }
-
-  frac operator* (frac arg1, const frac& arg2)
-  {
-    return arg1 *= arg2;
-  }
-
-  frac operator/ (frac arg1, const frac& arg2)
-  {
-    return arg1 /= arg2;
-  }
-
-  // (in)equality
-  bool operator == (const frac& u, const frac& v)
-  {
-    return u.num()*v.denom() == v.num()*u.denom();
-  }
-
-  bool operator != (const frac& u, const frac& v)
-  {
-    return !(u == v);
-  }
-
-  // denoms are unsigned
-  bool operator < (const frac& u, const frac& v)
-  {
-    return u.num()*v.denom() < v.num()*u.denom();
-  }
-
-  bool operator > (const frac& u, const frac& v)
-  {
-    return u.num()*v.denom() > v.num()*u.denom();
-  }
-
-  bool operator <= (const frac& u, const frac& v)
-  {
-    return u.num()*v.denom() <= v.num()*u.denom();
-  }
-
-  bool operator >= (const frac& u, const frac& v)
-  {
-    return u.num()*v.denom() >= v.num()*u.denom();
-  }
-
-  // N.B.: gcd(0,i) = |i|
-  unsigned int __epix_gcd (int i, unsigned int j)
-  {
-    unsigned int new_i(i<0 ? -i : i);
-    unsigned int temp;
-
-    if (new_i==0 || j==0) // (1,0) and (0,1) coprime, others not
-      return new_i + j;
-
-    else {
-      if (j < new_i) // swap them
-	{
-	  temp = j;
-	  j = new_i;
-	  new_i = temp;
-	}
-      // Euclidean algorithm
-      while ((temp = j%new_i)) // i does not evenly divide j
-	{
-	  j = new_i;
-	  new_i = temp;
-	}
-    
-      return new_i;
-    }
-  }
-} // end of namespace
-
diff --git a/graphics/epix/frac.h b/graphics/epix/frac.h
deleted file mode 100644
index c76d469852..0000000000
--- a/graphics/epix/frac.h
+++ /dev/null
@@ -1,81 +0,0 @@
-/* 
- * frac.h -- ePiX::rational number class
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.10
- * Last Change: August 07, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#ifndef EPIX_FRACTION
-#define EPIX_FRACTION
-
-namespace ePiX {
-
-  class frac {
-  public:
-    frac(const int n, const unsigned int d=1);
-    explicit frac(double);
-
-    // increment operators
-    frac& operator += (const frac& arg);
-    frac& operator -= (const frac& arg);
-    frac& operator *= (const frac& arg);
-    frac& operator /= (const frac& arg);
-
-    frac& reduce();
-    double eval() const;
-
-    int num() const;
-    unsigned int denom() const;
-
-    bool is_int() const;
-
-  private:
-    int m_num;
-    unsigned int m_denom;
-  }; // end of class frac
-
-  frac operator+ (frac arg1, const frac& arg2);
-  frac operator- (frac arg1);
-  frac operator- (frac arg1, const frac& arg2);
-  frac operator* (frac arg1, const frac& arg2);
-  frac operator/ (frac arg1, const frac& arg2);
-
-  // (in)equality
-  bool operator == (const frac& u, const frac& v);
-  bool operator != (const frac& u, const frac& v);
-
-  bool operator < (const frac& u, const frac& v);
-  bool operator > (const frac& u, const frac& v);
-
-  bool operator <= (const frac& u, const frac& v);
-  bool operator >= (const frac& u, const frac& v);
-
-} // end of namespace
-
-#endif /* EPIX_FRACTION */
diff --git a/graphics/epix/frame.cc b/graphics/epix/frame.cc
deleted file mode 100644
index 176025ffe0..0000000000
--- a/graphics/epix/frame.cc
+++ /dev/null
@@ -1,114 +0,0 @@
-/* 
- * frame.cc -- ePiX orthonormal basis
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.0.23
- * Last Change: January 10, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#include "constants.h"
-#include "functions.h"
-
-#include "errors.h"
-#include "triples.h"
-#include "frame.h"
-
-namespace ePiX {
-
-  // standard basis
-  frame::frame()
-    : m_e1(E_1), m_e2(E_2), m_e3(E_3) { }
-
-  // frame constructor, suitable for (sea,sky,eye) frames: Usually we
-  // know the eye vector and want to preserve its direction. The frame
-  // is guaranteed to be right-handed, and the first arg is immaterial.
-  frame::frame(P arg1, P arg2, P arg3)
-  {
-    if (norm(arg2*arg3) < EPIX_EPSILON) // too nearly linearly dependent
-      epix_error("Linearly dependent arguments to frame");
-
-    // partial Gram-Schmidt
-    arg3 *= 1/norm(arg3); // normalize eye
-
-    arg2 %= arg3; // orthogonalize sky_vector, preserving screen direction
-    arg2 *= 1/norm(arg2); // and normalize
-
-    m_e1 = arg2*arg3;
-    m_e2 = arg2;
-    m_e3 = arg3;
-  }
-
-
-  frame& frame::rot1(double angle)
-  {
-    P temp2(m_e2);
-    P temp3(m_e3);
-
-    m_e2 = (Cos(angle)*(temp2)) - (Sin(angle)*(temp3));
-    m_e3 = (Sin(angle)*(temp2)) + (Cos(angle)*(temp3));
-
-    return *this;
-  }
-
-
-  frame& frame::rot2(double angle)
-  {
-    P temp3(m_e3);
-    P temp1(m_e1);
-
-    m_e3 = (Cos(angle)*(temp3)) - (Sin(angle)*(temp1));
-    m_e1 = (Sin(angle)*(temp3)) + (Cos(angle)*(temp1));
-
-    return *this;
-  }
-
-  frame& frame::rot3(double angle)
-  {
-    P temp1(m_e1);
-    P temp2(m_e2);
-
-    m_e1 = (Cos(angle)*(temp1)) - (Sin(angle)*(temp2));
-    m_e2 = (Sin(angle)*(temp1)) + (Cos(angle)*(temp2));
-
-    return *this;
-  }
-
-  // frame elements
-  P frame::sea() const
-  {
-    return m_e1;
-  }
-  P frame::sky() const
-  {
-    return m_e2;
-  }
-  P frame::eye() const
-  {
-    return m_e3;
-  }
-} // end of namespace
diff --git a/graphics/epix/frame.h b/graphics/epix/frame.h
deleted file mode 100644
index fa70c3d16d..0000000000
--- a/graphics/epix/frame.h
+++ /dev/null
@@ -1,82 +0,0 @@
-/* 
- * frame.h -- Orthonormal basis
- *
- * This file is part of ePiX, a preprocessor for creating high-quality 
- * line figures in LaTeX 
- *
- * Version 1.0.15
- * Last Change: October 10, 2006
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-/*
- * In geometry, a "frame" is a right-handed orthonormal basis, that is,
- * an ordered set of three mututally perpendicular unit vectors, oriented
- * according to the right-hand rule. A frame has nothing to do with
- * picture frames.
- *
- *
- * This file provides:
- *   - the frame class, and routines for rotating a frame about the axes
- *     determined by its elements. (Note that there are no methods for
- *     rotating about fixed coordinate axes, and that rotations in R^3 do
- *     not generally commute.
- */
-
-#ifndef EPIX_FRAME
-#define EPIX_FRAME
-
-#include "triples.h"
-
-namespace ePiX {
-
-  class frame {
-  public:
-    // standard basis
-    frame();
-
-    // Gram-Schmidt
-    frame(P arg1, P arg2, P arg3); // need args by value
-
-    // frame elements
-    P sea() const;
-    P sky() const;
-    P eye() const;
-
-    // rotations about frame elements
-    frame& rot1(double angle);
-    frame& rot2(double angle);
-    frame& rot3(double angle);
-
-  private:
-    P m_e1; // sea
-    P m_e2; // sky
-    P m_e3; // eye
-  }; // end of class frame
-
-} // end of namespace
-
-#endif /* EPIX_FRAME */
diff --git a/graphics/epix/functions.cc b/graphics/epix/functions.cc
deleted file mode 100644
index ae1c9649ae..0000000000
--- a/graphics/epix/functions.cc
+++ /dev/null
@@ -1,398 +0,0 @@
-/* 
- * functions.cc -- non-standard mathematical functions
- *
- * This file is part of ePiX, a preprocessor for creating high-quality 
- * line figures in LaTeX 
- *
- * Version 1.2.0-2
- * Last Change: September 26, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include <cmath>
-
-#include "constants.h"
-#include "errors.h"
-#include "deriv.h"
-
-#include "angle_units.h"
-#include "triples.h"
-
-#include "functions.h"
-
-namespace ePiX {
-
-  // trig functions with angle units
-  double Cos(double t)
-  {
-    return std::cos(the_angle_style().to_radians(t));
-  }
-
-  double Sin(double t)
-  {
-    return std::sin(the_angle_style().to_radians(t));
-  }
-
-  double Tan(double t)
-  {
-    return std::tan(the_angle_style().to_radians(t));
-  }
-
-  double Sec(double t)
-  {
-    return 1.0/std::cos(the_angle_style().to_radians(t));
-  }
-
-  double Csc(double t)
-  {
-    return 1.0/std::sin(the_angle_style().to_radians(t));
-  }
-
-  double Cot(double t)
-  {
-    return 1.0/std::tan(the_angle_style().to_radians(t));
-  }
-
-  // and inverses
-  double Acos(double arg)
-  {
-    return std::acos(arg)/the_angle_style().to_radians(1);
-  }
-
-  double Asin(double arg)
-  {
-    return std::asin(arg)/the_angle_style().to_radians(1);
-  }
-
-  double Atan(double arg)
-  {
-    return std::atan(arg)/the_angle_style().to_radians(1);
-  }
-
-  double Atan2(double y, double x)
-  {
-    return std::atan2(y, x)/the_angle_style().to_radians(1);
-  }
-
-  // Additional hyperbolic tric functions and inverses
-  double sech(double x)
-  {
-    return 1.0/cosh(x);
-  }
-
-  double csch(double x)
-  {
-    return 1.0/sinh(x);
-  }
-
-  double coth(double x)
-  {
-    return 1.0/tanh(x);
-  }
-
-  double asech(double x)
-  {
-    return log((1+sqrt((1-x)*(1+x)))/x);
-  }
-
-  double acsch(double x)
-  {
-    return log((1+sqrt(1+x*x))/x);
-  }
-
-  double acoth(double x)
-  {
-    return 0.5*log((x+1)/(x-1));
-  }
-
-  double zero(double arg)
-  {
-    return 0;
-  }
-
-  double zero(double x, double y)
-  {
-    return 0;
-  }
-
-  double zero(double x, double y, double z)
-  {
-    return 0;
-  }
-
-  double zero(const P& arg)
-  {
-    return 0;
-  }
-
-  P xyz(double x, double y, double z) 
-  {
-    return P(x, y, z);
-  }
-
-  P cyl(double r, double t, double z) 
-  {
-    return P(r*Cos(t), r*Sin(t), z);
-  }
-
-  P sph(double r, double t, double phi) 
-  {
-    return P(r*(Cos(t))*(Cos(phi)), r*(Sin(t))*(Cos(phi)), r*(Sin(phi)));
-  }
-
-  P log_log(double x, double y, double z)
-  {
-    return P(log10(x), log10(y), z);
-  }
-
-  P log_lin(double x, double y, double z)
-  {
-    return P(log10(x), y, z);
-  }
-
-  P lin_log(double x, double y, double z)
-  {
-    return P(x, log10(y), z);
-  }
-
-
-  // for plot templates, arg mustn't be const P&
-  P cylindrical(P arg)
-  {
-    return cyl(arg.x1(), arg.x2(), arg.x3());
-  }
-
-  P spherical(P arg)
-  {
-    return sph(arg.x1(), arg.x2(), arg.x3());
-  }
-
-  P polar(double r, double t)
-  {
-    return cyl(r, t, 0);
-  }
-
-  P cis(double t)
-  {
-    return cyl(1, t, 0);
-  }
-
-  double recip (double x)
-  {
-    return 1.0/x;
-  }
-
-  // sin(x)/x
-  double sinx (double x)
-  {
-    if (1. + x*x == 1.) // from Don Hatch
-      return 1.;
-    else
-      return Sin(x)/the_angle_style().to_radians(x);
-  }
-
-  // signum, x/|x|, defined to be 0 at 0
-  double sgn (double x)
-  {
-    if (x > 0)
-      return 1;
-    else if (x < 0)
-      return -1;
-    else
-      return 0;
-  }
-
-  // Charlie Brown: Period-2 extension of |x| on [-1,1] /\/\/\/\/\/
-  double cb (double x)
-  {
-    x = fabs(x);
-    x -= 2*floor(0.5*x);
-    return min(x, 2-x);
-  }
-
-  // N.B.: gcd(0,i) = |i|
-  int gcd (int i, int j)
-  {
-    int temp;
-
-    i=abs(i);
-    j=abs(j);
-
-    if (i==0 || j==0) // (1,0) and (0,1) coprime, others not
-      return i+j;
-
-    else {
-      if (j < i) // swap them
-	{
-	  temp = j;
-	  j=i;
-	  i=temp;
-	}
-      // Euclidean algorithm
-      while ((temp = j%i)) // i does not evenly divide j
-	{
-	  j=i;
-	  i=temp;
-	}
-    
-      return i;
-    }
-  }
-
-  double min(double a, double b)
-  {
-    return a < b ? a : b;
-  }
-
-  double max(double a, double b)
-  {
-    return b < a ? a : b;
-  }
-
-  double snip_to(double var, double arg1, double arg2)  
-  {
-    if (var < min(arg1, arg2))
-      var = min(arg1,arg2);
-    else if (var > max(arg1, arg2))
-      var = max(arg1,arg2);
-    return var;
-  }
-
-  // inf and sup of f on [a,b]
-  double inf (double f(double), double a, double b)
-  {
-    const int N((int) ceil(fabs(b-a))); // N >= 1 unless a=b
-    double y(f(a));
-    const double dx((b-a)/(N*EPIX_ITERATIONS));
-
-    for (unsigned int i=1; i <= N*EPIX_ITERATIONS; ++i)
-      y = min(y, f(a + i*dx));
-
-    return y;
-  }
-
-  double sup (double f(double), double a, double b)
-  {
-    const int N((int) ceil(fabs(b-a))); // N >= 1 unless a=b
-    double y(f(a));
-    const double dx((b-a)/(N*EPIX_ITERATIONS));
-
-    for (unsigned int i=1; i <= N*EPIX_ITERATIONS; ++i)
-      y = max(y, f(a + i*dx));
-
-    return y;
-  }
-
-  // Integral class helper
-  double integrand(double f(double), double t, double dt)
-  {
-    return (1.0/6)*(f(t) + 4*f(t+0.5*dt)+f(t + dt))*dt;
-  } // Simpson's rule
-
-  Integral::Integral(double func(double), double a)
-    : f(func), x0(a) { }
-
-  double Integral::eval(double t) const
-  {
-    double sum(0); 
-    const int N(16*(int)ceil(fabs(t - x0))); // hardwired constant 16
-
-    if (N > 0)
-      {
-	const double dx((t - x0)/N);
-
-	for (int i=0; i < N; ++i)
-	  sum += integrand(f, x0+i*dx, dx);
-      }
-
-    return sum;
-  }
-
-  P Integral::operator() (const P& arg) const
-  {
-    double t(arg.x1());
-    return P(t, eval(t), 0);
-  }
-
-  double newton (double f(double), double g(double), double start)
-  {
-    double guess(start);
-    int count(0); // number of iterations
-
-    // Magic number 5
-    const int ITERS(5);
-    while ( (fabs(f(guess)-g(guess)) > EPIX_EPSILON) && (count < ITERS) )
-      {
-	if (fabs(deriv(f, guess)-deriv(g, guess)) < EPIX_EPSILON)
-	  {
-	    epix_warning("Returning critical point in Newton's method");
-	    return guess;
-	  }
-
-	guess -= (f(guess)-g(guess))/(deriv(f, guess)-deriv(g, guess));
-	++count;
-      }
-
-    if (count == ITERS)
-      epix_warning("Maximum number of iterations in Newton's method");
-
-    return guess;
-  }
-
-  double newton (double f(double), double start)
-  {
-    return newton(f, zero, start);
-  }
-
-  // Member functions
-  Deriv::Deriv(double func(double))
-    : f(func), dt(EPIX_EPSILON) { }
-
-  Deriv::Deriv(double func(double), double eps)
-    : f(func), dt(eps) { }
-
-  P Deriv::operator() (const P& arg) const
-  {
-    double t(arg.x1());
-    return P(t, deriv(f, t, dt), 0);
-  }
-
-  double Deriv::eval(double t) const
-  {
-    return deriv(f, t, dt);
-  }
-
-  // one-sided derivatives
-  double Deriv::right(double t) const
-  {
-    return  (2.0/dt)*(f(t+0.5*dt) - f(t));
-  }
-
-  double Deriv::left(double t) const
-  {
-    return (2.0/dt)*(f(t) - f(t-0.5*dt));
-  }
-} // end of namespace
diff --git a/graphics/epix/functions.h b/graphics/epix/functions.h
deleted file mode 100644
index 40726a8f12..0000000000
--- a/graphics/epix/functions.h
+++ /dev/null
@@ -1,147 +0,0 @@
-/*
- * functions.h  -- ePiX auxiliary functions; Deriv, Integral classes
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.22
- * Last Change: September 24, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#ifndef EPIX_FUNCTIONS
-#define EPIX_FUNCTIONS
-
-namespace ePiX {
-
-  class P;
-
-  // sensitive to angle units
-  double Cos(double t);
-  double Sin(double t);
-  double Tan(double t);
-
-  double Sec(double t);
-  double Csc(double t);
-  double Cot(double t);
-
-  double Acos(double t);
-  double Asin(double t);
-  double Atan(double t);
-
-  double Atan2(double y, double x);
-
-  // additional hyperbolic functions and inverses
-  double sech(double);
-  double csch(double);
-  double coth(double);
-
-  double asech(double);
-  double acsch(double);
-  double acoth(double);
-
-  // zero functions
-  double zero(double);
-  double zero(double, double);
-  double zero(double, double, double);
-  double zero(const P&);
-
-  // P constructors
-  P xyz(double x, double y, double z=0);
-  P cyl(double r, double t, double z);
-  P sph(double r, double t, double phi);
-
-  // for log data plotting
-  P log_log(double x, double y, double z=0);
-  P log_lin(double x, double y, double z=0);
-  P lin_log(double x, double y, double z=0);
-
-  P cylindrical(P); // not const P&
-  P spherical(P);
-
-  P polar(double r, double t);
-  P cis(double t);
-
-  // utility functions
-  double recip (double);
-  double sinx (double); // discontinuity removed
-  double sgn (double);
-
-  // period-2 extension of absolute value on [-1,1]: \/\/\/
-  double cb (double);
-
-  int gcd (int, int);
-
-  double min(double, double);
-  double max(double, double);
-
-  double snip_to(double var, double arg1, double arg2);
-
-  double inf (double f(double), double, double);
-  double sup (double f(double), double, double);
-
-
-  // derivative class
-  class Deriv {
-  private:
-    double (*f)(double);
-    double dt;
-
-  public:
-    Deriv(double func(double));
-    Deriv(double func(double), double eps);
-
-    P operator() (const P&) const; // for plotting
-
-    // numerical values
-    double eval(double t) const;
-
-    // one-sided derivatives
-    double right(double t) const;
-    double left(double t) const;
-  }; // end of class Deriv
-
-
-  // definite integral class
-  class Integral {
-  private:
-    double (*f)(double);
-    double x0; // lower limit
-
-  public:
-    Integral(double func(double), double a=0);
-
-    P operator() (const P&) const;
-
-    double eval(double) const;
-  }; // end of class Integral
-
-  double newton (double f(double), double g(double), double start);
-  double newton (double f(double), double start);
-
-} // end of namespace
-
-#endif /* EPIX_FUNCTIONS */
diff --git a/graphics/epix/geometry.cc b/graphics/epix/geometry.cc
deleted file mode 100644
index dec6342fc2..0000000000
--- a/graphics/epix/geometry.cc
+++ /dev/null
@@ -1,804 +0,0 @@
-/* 
- * geometry.cc -- spherical and hyperbolic geometry
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.21
- * Last Change: September 22, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include <cmath>
-#include <vector>
-
-#include "constants.h"
-#include "errors.h"
-#include "functions.h"
-
-#include "triples.h"
-#include "frame.h"
-
-#include "state.h"
-
-#include "camera.h"
-
-#include "path.h"
-
-#include "sphere.h"
-#include "curves.h"
-
-#include "geometry.h"
-
-namespace ePiX {
-
-  //// Static utility functions ////
-
-  // Flag for type of projection to the sphere
-  enum sphere_proj_type {RADIAL, STEREO_N, STEREO_S};
-
-  // point constructor in geographic coords on specified sphere/frame
-  P sphere_posn(double lat, double lngtd, const Sphere& S, const frame& coords)
-  {
-    double rad(S.radius());
-
-    return S.center() + 
-      rad*Cos(lat)*(Cos(lngtd)*coords.sea() + Sin(lngtd)*coords.sky()) +
-      rad*Sin(lat)*coords.eye();
-  }
-
-  // latitudes and longitudes
-  void draw_latitude(double lat, double lngtd_min, double lngtd_max,
-		     bool front, const Sphere& S, const frame& coords)
-  {
-    P center(S.center() + (S.radius()*Sin(lat)*coords.eye()));
-    double radius(S.radius()*Cos(lat));
-
-    path temp(center, radius*coords.sea(), radius*coords.sky(),
-	      lngtd_min, lngtd_max);
-
-    temp.clip_to(S, cam().viewpt(), front);
-    temp.draw();
-  }
-
-  // draw portion of longitude line
-  void draw_longitude(double lngtd, double lat_min, double lat_max,
-		      bool front, const Sphere& S, const frame& coords)
-  {
-    P center(S.center());
-    double radius(S.radius());
-
-    path temp(center,
-	      radius*(Cos(lngtd)*coords.sea()+Sin(lngtd)*coords.sky() ),
-	      radius*coords.eye(), lat_min, lat_max);
-
-    temp.clip_to(S, cam().viewpt(), front);
-    temp.draw();
-  }
-
-
-  // Spherical geometry
-  P proj_to_sphere(const P& arg, const Sphere& S, sphere_proj_type TYPE)
-  {
-    P O(S.center());
-    double rad(S.radius());
-    P loc(arg - O); // location relative to O
-
-    if (TYPE == RADIAL)
-      return O + (rad/norm(loc))*loc;
-
-    else if (TYPE == STEREO_N)
-      {
-	P temp(loc%E_3);
-	double rho(temp|temp);
-	return O + (rad/(rho+1))*P(2*temp.x1(), 2*temp.x2(), rho-1);
-      }
-
-    else if (TYPE == STEREO_S)
-      {
-	P temp(loc%E_3);
-	double rho(temp|temp);
-	return O + (rad/(rho+1))*P(2*temp.x1(), 2*temp.x2(), 1-rho);
-      }
-
-    else // Return center on erroneous projection type
-      return O;
-  }
-
-  void draw_sphereplot(double f1(double),double f2(double),double f3(double), 
-		       double t_min, double t_max, int num_pts, bool front, 
-		       sphere_proj_type TYPE, const Sphere& S)
-  {
-    std::vector<P> data(num_pts+1);
-    double t(t_min);
-    const double dt((t_max - t_min)/num_pts);
-
-    for (int i=0; i <= num_pts; ++i, t += dt)
-      data.at(i) = proj_to_sphere(P(f1(t), f2(t), f3(t)), S, TYPE);
-
-  path temp(data, false, false);
-  temp.clip_to(S, cam().viewpt(), front);
-  temp.draw();
-  } // end of draw_sphereplot
-
-  void draw_sphereplot(P Phi(double), double t_min, double t_max, 
-		       int num_pts, bool front, sphere_proj_type TYPE,
-		       const Sphere& S)
-  {
-    std::vector<P> data(num_pts+1);
-    double t(t_min);
-    const double dt((t_max - t_min)/num_pts);
-
-    for (int i=0; i <= num_pts; ++i, t += dt)
-      data.at(i) = proj_to_sphere(Phi(t), S, TYPE);
-
-  path temp(data, false, false);
-  temp.clip_to(S, cam().viewpt(), front);
-  temp.draw();
-  } // end of draw_sphereplot
-
-
-  // segment mapping class
-  class seg {
-  public:
-    seg(const P& tail, const P& head)
-      : m_tail(tail), m_head(head) { }
-
-    // so we can be plotted
-    P operator() (double t) const
-    {
-      return m_tail + t*(m_head - m_tail);
-    }
-
-  private:
-    P m_tail;
-    P m_head;
-  }; // end of class seg
-
-
-  // assumes seg contains the actual (scaled, translated) endpoints
-  void draw_sphere_arc(const seg& sgmt, double t_min, double t_max, 
-		       bool front, sphere_proj_type TYPE, const Sphere& S)
-  {
-    P tail(sgmt(t_min)), head(sgmt(t_max));
-    double cos_theta(((head-S.center())|(tail-S.center()))/pow(S.radius(),2));
-    if (1-cos_theta < EPIX_EPSILON) // endpoints equal
-      return; // draw nothing
-
-    else if (1+cos_theta < EPIX_EPSILON) // endpoints antipodal
-      {
-	epix_warning("Spherical arc joins antipodes, no output");
-	return;
-      }
-    // else
-
-    int num_pts((int) ceil(EPIX_NUM_PTS*Acos(cos_theta)/full_turn()));
-    if (num_pts < 2)
-      num_pts=2;
-
-    std::vector<P> data(num_pts+1);
-    double t(t_min);
-    const double dt((t_max - t_min)/num_pts);
-
-    P O(S.center());
-    double rad(S.radius());
-
-    for (int i=0; i <= num_pts; ++i, t += dt)
-      {
-	P loc(sgmt(t) - O); // location relative to O
-	data.at(i) = S.center() + rad*recip(norm(loc))*loc;
-      }
-
-    path temp(data, false, false);
-    temp.clip_to(S, cam().viewpt(), front);
-    temp.draw();
-  } // end of draw_sphere_arc
-
-
-  //// "Geography" and spherical plotting ////
-  void latitude(double lat, double lngtd_min, double lngtd_max,
-		const Sphere& S, const frame& coords)
-  {
-    draw_latitude(lat, lngtd_min, lngtd_max, true, S, coords);
-  }
-
-
-  void longitude(double lngtd, double lat_min, double lat_max,
-		 const Sphere& S, const frame& coords)
-  {
-    draw_longitude(lngtd, lat_min, lat_max, true, S, coords);
-  }
-
-  void back_latitude(double lat, double lngtd_min, double lngtd_max,
-		     const Sphere& S, const frame& coords)
-  {
-    draw_latitude(lat, lngtd_min, lngtd_max, false, S, coords);
-  }
-
-  void back_longitude(double lngtd, double lat_min, double lat_max,
-		      const Sphere& S, const frame& coords)
-  {
-    draw_longitude(lngtd, lat_min, lat_max, false, S, coords);
-  }
-
-
-  // spherical plotting
-  void frontplot_N(double f1(double), double f2(double),
-		   double t_min, double t_max, int num_pts, 
-		   const Sphere& S)
-  {
-    draw_sphereplot(f1, f2, zero, t_min, t_max, num_pts, true, STEREO_N, S);
-  }
-
-  void backplot_N(double f1(double), double f2(double),
-		  double t_min, double t_max, int num_pts,
-		  const Sphere& S)
-  {
-    draw_sphereplot(f1, f2, zero, t_min, t_max, num_pts, false, STEREO_N, S);
-  }
-
-  void frontplot_S(double f1(double), double f2(double),
-		   double t_min, double t_max, int num_pts, 
-		   const Sphere& S)
-  {
-    draw_sphereplot(f1, f2, zero, t_min, t_max, num_pts, true, STEREO_S, S);
-  }
-
-  void backplot_S(double f1(double), double f2(double),
-		  double t_min, double t_max, int num_pts, 
-		  const Sphere& S)
-  {
-    draw_sphereplot(f1, f2, zero, t_min, t_max, num_pts, false, STEREO_S, S);
-  }
-
-
-  // Radial projection from center
-  void frontplot_R(P phi(double), double t_min, double t_max, 
-		   int num_pts, const Sphere& S)
-  {
-    draw_sphereplot(phi, t_min, t_max, num_pts, true, RADIAL, S);
-  }
-
-  void backplot_R(P phi(double), double t_min, double t_max, 
-		  int num_pts, const Sphere& S)
-  {
-    draw_sphereplot(phi, t_min, t_max, num_pts, false, RADIAL, S);
-  }
-
-
-  //// Spherical geometry -- arcs and polyhedra ////
-  // arc of great circle between non-antipodal points
-  void arc(const P& tail, const P& head, const bool front, const Sphere& S)
-  {
-    draw_sphere_arc(seg(tail, head), 0, 1, front, RADIAL, S);
-  }
-
-
-  // user-space functions
-  void front_arc(const P& p1, const P& p2, const Sphere& S)
-  {
-    const P ctr(S.center());
-    const double rad(S.radius());
-
-    arc(ctr+(rad/norm(p1))*p1, ctr+(rad/norm(p2))*p2, true, S);
-  }
-
-  void  back_arc(const P& p1, const P& p2, const Sphere& S)
-  {
-    const P ctr(S.center());
-    const double rad(S.radius());
-
-    arc(ctr+(rad/norm(p1))*p1, ctr+(rad/norm(p2))*p2, false, S);
-  }
-
-  // join p1 to -p1 through p2
-  void front_arc2(const P& p1, const P& p2, const Sphere& S)
-  {
-    front_arc(p1,  p2, S);
-    front_arc(p2, -p1, S);
-  }
-
-  void  back_arc2(const P& p1, const P& p2, const Sphere& S)
-  {
-    back_arc(p1,  p2, S);
-    back_arc(p2, -p1, S);
-  }
-
-  void front_line(const P& p1, const P& p2, const Sphere& S)
-  {
-    front_arc( p1,  p2, S);
-    front_arc( p2, -p1, S);
-    front_arc(-p1, -p2, S);
-    front_arc(-p2,  p1, S);
-  }
-
-
-  void back_line(const P& p1, const P& p2, const Sphere& S)
-  {
-    back_arc( p1,  p2, S);
-    back_arc( p2, -p1, S);
-    back_arc(-p1, -p2, S);
-    back_arc(-p2,  p1, S);
-  }
-
-
-  void front_triangle(const P& p1, const P& p2, const P& p3, const Sphere& S)
-  {
-    front_arc(p1, p2, S);
-    front_arc(p2, p3, S);
-    front_arc(p3, p1, S);
-  }
-
-  void  back_triangle(const P& p1, const P& p2, const P& p3, const Sphere& S)
-  {
-    back_arc(p1, p2, S);
-    back_arc(p2, p3, S);
-    back_arc(p3, p1, S);
-  }
-
-  // local to this file
-  void front_dual(const P& p1, const P& p2, const P& p3, const Sphere& S)
-  {
-    const P ctr(0.3333*(p1+p2+p3));
-
-    front_arc(ctr, 0.5*(p1+p2), S);
-    front_arc(ctr, 0.5*(p2+p3), S);
-    front_arc(ctr, 0.5*(p3+p1), S);
-  }
-
-  void  back_dual(const P& p1, const P& p2, const P& p3, const Sphere& S)
-  {
-    const P ctr(0.3333*(p1+p2+p3));
-
-    back_arc(ctr, 0.5*(p1+p2), S);
-    back_arc(ctr, 0.5*(p2+p3), S);
-    back_arc(ctr, 0.5*(p3+p1), S);
-  }
-
-
-  // spherical polyhedra
-  void front_tetra(const Sphere& S, const frame& coords)
-  {
-    const P f1(coords.sea());
-    const P f2(coords.sky());
-    const P f3(coords.eye());
-
-    const P ppp( f1+f2+f3);
-    const P pnn( f1-f2-f3);
-    const P npn(-f1+f2-f3);
-    const P nnp(-f1-f2+f3);
-
-    front_triangle(ppp,pnn,npn,S);
-    front_triangle(ppp,npn,nnp,S);
-    front_triangle(ppp,nnp,pnn,S);
-    front_triangle(nnp,pnn,npn,S);
-  }
-  void  back_tetra(const Sphere& S, const frame& coords)
-  {
-    const P f1(coords.sea());
-    const P f2(coords.sky());
-    const P f3(coords.eye());
-
-    const P ppp( f1+f2+f3);
-    const P pnn( f1-f2-f3);
-    const P npn(-f1+f2-f3);
-    const P nnp(-f1-f2+f3);
-
-    back_triangle(ppp,pnn,npn,S);
-    back_triangle(ppp,npn,nnp,S);
-    back_triangle(ppp,nnp,pnn,S);
-    back_triangle(nnp,pnn,npn,S);
-  }
-
-  void front_cube(const Sphere& S, const frame& coords)
-  {
-    const P f1(coords.sea());
-    const P f2(coords.sky());
-    const P f3(coords.eye());
-
-    const P ppp( f1+f2+f3);
-    const P npp(-f1+f2+f3);
-    const P nnp(-f1-f2+f3);
-    const P pnp( f1-f2+f3);
-
-    const P ppn( f1+f2-f3);
-    const P npn(-f1+f2-f3);
-    const P nnn(-f1-f2-f3);
-    const P pnn( f1-f2-f3);
-
-    front_arc(ppp,npp,S);
-    front_arc(npp,nnp,S);
-    front_arc(nnp,pnp,S);
-    front_arc(pnp,ppp,S);
-
-    front_arc(ppn,npn,S);
-    front_arc(npn,nnn,S);
-    front_arc(nnn,pnn,S);
-    front_arc(pnn,ppn,S);
-
-    front_arc(ppp,ppn,S);
-    front_arc(npp,npn,S);
-    front_arc(nnp,nnn,S);
-    front_arc(pnp,pnn,S);
-  }
-  void  back_cube(const Sphere& S, const frame& coords)
-  {
-    const P f1(coords.sea());
-    const P f2(coords.sky());
-    const P f3(coords.eye());
-
-    const P ppp( f1+f2+f3);
-    const P npp(-f1+f2+f3);
-    const P nnp(-f1-f2+f3);
-    const P pnp( f1-f2+f3);
-
-    const P ppn( f1+f2-f3);
-    const P npn(-f1+f2-f3);
-    const P nnn(-f1-f2-f3);
-    const P pnn( f1-f2-f3);
-
-    back_arc(ppp,npp,S);
-    back_arc(npp,nnp,S);
-    back_arc(nnp,pnp,S);
-    back_arc(pnp,ppp,S);
-
-    back_arc(ppn,npn,S);
-    back_arc(npn,nnn,S);
-    back_arc(nnn,pnn,S);
-    back_arc(pnn,ppn,S);
-
-    back_arc(ppp,ppn,S);
-    back_arc(npp,npn,S);
-    back_arc(nnp,nnn,S);
-    back_arc(pnp,pnn,S);
-  }
-
-  void front_octa(const Sphere& S, const frame& coords)
-  {
-    const P p1(coords.sea());
-    const P p2(coords.sky());
-    const P p3(coords.eye());
-
-    const P m1(-coords.sea());
-    const P m2(-coords.sky());
-    const P m3(-coords.eye());
-
-    // draw "even parity" triangles only
-    front_triangle(p1,p2,p3,S);
-    front_triangle(m1,m2,p3,S);
-
-    front_triangle(m1,p2,m3,S);
-    front_triangle(p1,m2,m3,S);
-  }
-  void  back_octa(const Sphere& S, const frame& coords)
-  {
-    const P p1(coords.sea());
-    const P p2(coords.sky());
-    const P p3(coords.eye());
-
-    const P m1(-coords.sea());
-    const P m2(-coords.sky());
-    const P m3(-coords.eye());
-
-    // draw "even parity" triangles only
-    back_triangle(p1,p2,p3,S);
-    back_triangle(m1,m2,p3,S);
-
-    back_triangle(m1,p2,m3,S);
-    back_triangle(p1,m2,m3,S);
-  }
-
-
-  void front_dodeca(const Sphere& S, const frame& coords)
-  {
-    const P f1(coords.sea());
-    const P f2(coords.sky());
-    const P f3(coords.eye());
-    const double gam(0.5*(1+sqrt(5)));
-
-    const P pop( gam*f1 + f3);
-    const P pom( gam*f1 - f3);
-    const P mom(-gam*f1 - f3);
-    const P mop(-gam*f1 + f3);
-
-    const P ppo( f1 + gam*f2);
-    const P pmo( f1 - gam*f2);
-    const P mmo(-f1 - gam*f2);
-    const P mpo(-f1 + gam*f2);
-
-    const P opp( f2 + gam*f3);
-    const P opm( f2 - gam*f3);
-    const P omm(-f2 - gam*f3);
-    const P omp(-f2 + gam*f3);
-
-    // faces surrounding pop
-    front_dual(pop, ppo, opp, S);
-    front_dual(pop, opp, omp, S);
-    front_dual(pop, omp, pmo, S);
-    front_dual(pop, pmo, pom, S);
-    front_dual(pop, pom, ppo, S);
-
-    // respective reflections about link of pop
-    front_dual(opp, ppo, mpo, S);
-    front_dual(omp, opp, mop, S);
-    front_dual(pmo, omp, mmo, S);
-    front_dual(pom, pmo, omm, S);
-    front_dual(ppo, pom, opm, S);
-
-    // and their antipodes
-    front_dual(mom, omm, mmo, S);
-    front_dual(mom, opm, omm, S);
-    front_dual(mom, mpo, opm, S);
-    front_dual(mom, mop, mpo, S);
-    front_dual(mom, mmo, mop, S);
-
-    front_dual(omm, pmo, mmo, S);
-    front_dual(opm, pom, omm, S);
-    front_dual(mpo, ppo, opm, S);
-    front_dual(mop, opp, mpo, S);
-    front_dual(mmo, omp, mop, S);
-  }
-
-  void  back_dodeca(const Sphere& S, const frame& coords)
-  {
-    const P f1(coords.sea());
-    const P f2(coords.sky());
-    const P f3(coords.eye());
-    const double gam(0.5*(1+sqrt(5)));
-
-    const P pop( gam*f1 + f3);
-    const P pom( gam*f1 - f3);
-    const P mom(-gam*f1 - f3);
-    const P mop(-gam*f1 + f3);
-
-    const P ppo( f1 + gam*f2);
-    const P pmo( f1 - gam*f2);
-    const P mmo(-f1 - gam*f2);
-    const P mpo(-f1 + gam*f2);
-
-    const P opp( f2 + gam*f3);
-    const P opm( f2 - gam*f3);
-    const P omm(-f2 - gam*f3);
-    const P omp(-f2 + gam*f3);
-
-    // faces surrounding pop
-    back_dual(pop, ppo, opp, S);
-    back_dual(pop, opp, omp, S);
-    back_dual(pop, omp, pmo, S);
-    back_dual(pop, pmo, pom, S);
-    back_dual(pop, pom, ppo, S);
-
-    // respective reflections about link of pop
-    back_dual(opp, ppo, mpo, S);
-    back_dual(omp, opp, mop, S);
-    back_dual(pmo, omp, mmo, S);
-    back_dual(pom, pmo, omm, S);
-    back_dual(ppo, pom, opm, S);
-
-    // and their antipodes
-    back_dual(mom, omm, mmo, S);
-    back_dual(mom, opm, omm, S);
-    back_dual(mom, mpo, opm, S);
-    back_dual(mom, mop, mpo, S);
-    back_dual(mom, mmo, mop, S);
-
-    back_dual(omm, pmo, mmo, S);
-    back_dual(opm, pom, omm, S);
-    back_dual(mpo, ppo, opm, S);
-    back_dual(mop, opp, mpo, S);
-    back_dual(mmo, omp, mop, S);
-  }
-
-
-  void front_icosa(const Sphere& S, const frame& coords)
-  {
-    const P f1(coords.sea());
-    const P f2(coords.sky());
-    const P f3(coords.eye());
-    const double gam(0.5*(1+sqrt(5)));
-
-    const P pop( gam*f1 + f3);
-    const P pom( gam*f1 - f3);
-    const P mom(-gam*f1 - f3);
-    const P mop(-gam*f1 + f3);
-
-    const P ppo( f1 + gam*f2);
-    const P pmo( f1 - gam*f2);
-    const P mmo(-f1 - gam*f2);
-    const P mpo(-f1 + gam*f2);
-
-    const P opp( f2 + gam*f3);
-    const P opm( f2 - gam*f3);
-    const P omm(-f2 - gam*f3);
-    const P omp(-f2 + gam*f3);
-
-    // faces surrounding pop
-    front_triangle(pop, ppo, opp, S);
-    front_triangle(pop, opp, omp, S);
-    front_triangle(pop, omp, pmo, S);
-    front_triangle(pop, pmo, pom, S);
-    front_triangle(pop, pom, ppo, S);
-
-    // respective reflections about link of pop
-    front_triangle(opp, ppo, mpo, S);
-    front_triangle(omp, opp, mop, S);
-    front_triangle(pmo, omp, mmo, S);
-    front_triangle(pom, pmo, omm, S);
-    front_triangle(ppo, pom, opm, S);
-
-    // and their antipodes
-    front_triangle(mom, omm, mmo, S);
-    front_triangle(mom, opm, omm, S);
-    front_triangle(mom, mpo, opm, S);
-    front_triangle(mom, mop, mpo, S);
-    front_triangle(mom, mmo, mop, S);
-
-    front_triangle(omm, pmo, mmo, S);
-    front_triangle(opm, pom, omm, S);
-    front_triangle(mpo, ppo, opm, S);
-    front_triangle(mop, opp, mpo, S);
-    front_triangle(mmo, omp, mop, S);
-  }
-
-  void  back_icosa(const Sphere& S, const frame& coords)
-  {
-    const P f1(coords.sea());
-    const P f2(coords.sky());
-    const P f3(coords.eye());
-    const double gam(0.5*(1+sqrt(5)));
-
-    const P pop( gam*f1 + f3);
-    const P pom( gam*f1 - f3);
-    const P mom(-gam*f1 - f3);
-    const P mop(-gam*f1 + f3);
-
-    const P ppo( f1 + gam*f2);
-    const P pmo( f1 - gam*f2);
-    const P mmo(-f1 - gam*f2);
-    const P mpo(-f1 + gam*f2);
-
-    const P opp( f2 + gam*f3);
-    const P opm( f2 - gam*f3);
-    const P omm(-f2 - gam*f3);
-    const P omp(-f2 + gam*f3);
-
-    // faces surrounding pop
-    back_triangle(pop, ppo, opp, S);
-    back_triangle(pop, opp, omp, S);
-    back_triangle(pop, omp, pmo, S);
-    back_triangle(pop, pmo, pom, S);
-    back_triangle(pop, pom, ppo, S);
-
-    // respective reflections about link of pop
-    back_triangle(opp, ppo, mpo, S);
-    back_triangle(omp, opp, mop, S);
-    back_triangle(pmo, omp, mmo, S);
-    back_triangle(pom, pmo, omm, S);
-    back_triangle(ppo, pom, opm, S);
-
-    // and their antipodes
-    back_triangle(mom, omm, mmo, S);
-    back_triangle(mom, opm, omm, S);
-    back_triangle(mom, mpo, opm, S);
-    back_triangle(mom, mop, mpo, S);
-    back_triangle(mom, mmo, mop, S);
-
-    back_triangle(omm, pmo, mmo, S);
-    back_triangle(opm, pom, omm, S);
-    back_triangle(mpo, ppo, opm, S);
-    back_triangle(mop, opp, mpo, S);
-    back_triangle(mmo, omp, mop, S);
-  }
-
-
-
-  // Hyperbolic lines in upper half space
-  // For compatibility with 2-D geometry, the boundary is the (x1,x3)-plane
-
-  void hyperbolic_line(const P& tail, const P& head)
-  {
-    if ( (tail.x2() < 0) || (head.x2() < 0) )
-      epix_warning("Endpoint not in upper half-space");
-
-    P sh_tail(tail%E_2); // shadow of tail
-    P sh_head(head%E_2);
-    double ht_tail(tail|E_2), ht_head(head|E_2);
-    double dist(norm(sh_head - sh_tail)); // dist btw projections to boundary
-
-    if (dist < EPIX_EPSILON)
-      line(tail, head);
-
-    else
-      {
-	// use similar triangles to find center; get basis; draw arc
-	double diff((ht_head - ht_tail)*(ht_head + ht_tail)/dist);
-	double frac(0.5*(diff + dist));
-	P center((1-frac/dist)*sh_tail + (frac/dist)*sh_head);
-	P e1(tail - center);
-	double rad(norm(e1));
-
-	P e2(E_2%e1);
-	e2 *= rad/norm(e2);
-	double theta(Acos(((head-center)|e1)/(rad*rad)));
-
-	ellipse(center, e1, e2, 0, theta);
-      }
-  } // end of hyperbolic_line
-
-
-  // Lines in Poincare disk model.
-  //
-  // Consider the "positive" portion of the standard hyperboloid of two 
-  // sheets: x^2 + y^2 + 1 = z^2, z>0, and consider copies of the unit
-  // disk in the planes z=0 (D0) and z=1 (D1). The Klein model of the disk
-  // is gotten by stereographic projection from the origin to D1, while the
-  // Poincare model is gotten by stereographic projection from (0,0,-1) to
-  // D0. Appropriate compositions of these projection maps are hyperbolic
-  // isometries. The algorithm for drawing lines in the disk model is to
-  // find the images of the endpoints in the Klein model, draw the line
-  // between them, and map this line back to the Poincare model. Because
-  // the isometry is "square-root-like" in the radial direction at the
-  // unit circle, the points on the Klein line are spaced quadratically
-  // close together at the endpoints of the segment (the variable "s") so
-  // their images will be roughly equally-spaced in the Poincare model.
-  // There is no visual harm if one or both endpoints are far from the
-  // circle, and the result is acceptable if both points are on or near the
-  // circle. The number of points to draw is determined both by the true
-  // distance between the endpoints and by how close they are to the circle.
-
-  P poincare_klein(P pt)
-  {
-    return (2.0/(1+(pt|pt)))*pt;
-  }
-
-  P klein_poincare(P pt)
-  {
-    return (1.0/(1+sqrt(1-(pt|pt))))*pt;
-  }
-
-  P p_line(const P& tail, const P& head, double t)
-  {
-    double s(0.5*(1+std::cos(M_PI*t))); // s in [0,1]
-
-    P current((s*poincare_klein(tail)) + ((1-s)*poincare_klein(head)));
-    return klein_poincare(current);
-  }
-
-  void disk_line(const P& tail, const P& head)
-  {
-    const int N(EPIX_NUM_PTS);
-    std::vector<P> data(N+1);
-
-    double t(0);
-
-    for (int i=0; i <= N; ++i, t += 1.0/N)
-      data.at(i) = p_line(tail, head, t);
-
-    path temp(data, false, false);
-    temp.draw();
-  }
-
-} // end of namespace
diff --git a/graphics/epix/geometry.h b/graphics/epix/geometry.h
deleted file mode 100644
index 60afb8af9c..0000000000
--- a/graphics/epix/geometry.h
+++ /dev/null
@@ -1,125 +0,0 @@
-/*
- * geometry.h 
- *
- * This file is part of ePiX, a preprocessor for creating high-quality 
- * line figures in LaTeX 
- *
- * Version 1.1.6
- * Last Change: June 28, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#ifndef EPIX_GEOMETRY
-#define EPIX_GEOMETRY
-
-#include "frame.h"
-#include "sphere.h"
-
-namespace ePiX {
-  class P;
-
-  // latitude, longitude lines with hiding
-  void latitude(double lat, double long_min, double long_max,
-		const Sphere& S=Sphere(), const frame& coords=frame());
-
-  void longitude(double lngtd, double lat_min, double lat_max,
-		 const Sphere& S=Sphere(), const frame& coords=frame());
-
-  void back_latitude(double lat, double long_min, double long_max,
-		     const Sphere& S=Sphere(), const frame& coords=frame());
-
-  void back_longitude(double lngtd, double lat_min, double lat_max,
-		      const Sphere& S=Sphere(), const frame& coords=frame());
-
-
-  // stereographic projection; path first projected vertically
-  void frontplot_N(double f1(double), double f2(double),
-		   double t_min, double t_max, int num_pts, 
-		   const Sphere& S = Sphere());
-
-  void backplot_N(double f1(double), double f2(double),
-		  double t_min, double t_max, int num_pts,
-		  const Sphere& S = Sphere());
-
-  void frontplot_S(double f1(double), double f2(double),
-		   double t_min, double t_max, int num_pts, 
-		   const Sphere& S = Sphere());
-
-  void backplot_S(double f1(double), double f2(double),
-		  double t_min, double t_max, int num_pts, 
-		  const Sphere& S = Sphere());
-
-  // Radial projection from center
-  void frontplot_R(P phi(double), double t_min, double t_max, 
-		   int num_pts, const Sphere& S = Sphere());
-
-  void backplot_R(P phi(double), double t_min, double t_max, 
-		  int num_pts, const Sphere& S = Sphere());
-
-
-  // All sphere line functions treat point arguments as unscaled
-  // displacements from the center of the sphere, not as absolute
-  // spatial locations.  If the center or radius of the sphere
-  // changes, the line automatically adjusts as expected.
-
-  // front portion of spherical segment joining p1 to p2
-  void front_arc(const P& p1, const P& p2, const Sphere& S = Sphere());
-  void  back_arc(const P& p1, const P& p2, const Sphere& S = Sphere());
-
-  // half-line joining p1 to -p1 through p2
-  void front_arc2(const P&, const P&, const Sphere& S=Sphere());
-  void  back_arc2(const P&, const P&, const Sphere& S=Sphere());
-
-  // great circle through p1 and p2
-  void front_line(const P&, const P&, const Sphere& S=Sphere());
-  void  back_line(const P&, const P&, const Sphere& S=Sphere());
-
-  void front_triangle(const P&, const P&, const P&, const Sphere& S=Sphere());
-  void  back_triangle(const P&, const P&, const P&, const Sphere& S=Sphere());
-
-  // spherical polyhedra
-  void front_tetra(const Sphere& S=Sphere(), const frame& coords=frame());
-  void  back_tetra(const Sphere& S=Sphere(), const frame& coords=frame());
-
-  void front_cube(const Sphere& S=Sphere(), const frame& coords=frame());
-  void  back_cube(const Sphere& S=Sphere(), const frame& coords=frame());
-
-  void front_octa(const Sphere& S=Sphere(), const frame& coords=frame());
-  void  back_octa(const Sphere& S=Sphere(), const frame& coords=frame());
-
-  void front_dodeca(const Sphere& S=Sphere(), const frame& coords=frame());
-  void  back_dodeca(const Sphere& S=Sphere(), const frame& coords=frame());
-
-  void front_icosa(const Sphere& S=Sphere(), const frame& coords=frame());
-  void  back_icosa(const Sphere& S=Sphere(), const frame& coords=frame());
-
-  // Hyperbolic lines
-  void hyperbolic_line (const P&, const P&);
-  void disk_line (const P&, const P&);
-
-} // end of namespace
-
-#endif /* EPIX_GEOMETRY */
diff --git a/graphics/epix/glyph.cc b/graphics/epix/glyph.cc
deleted file mode 100644
index db4e0f2b37..0000000000
--- a/graphics/epix/glyph.cc
+++ /dev/null
@@ -1,145 +0,0 @@
-/* 
- * glyph.cc -- ePiX screen implemenation for labels and markers
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.22
- * Last Change: September 24, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include <cmath>
-#include <sstream>
-
-#include "constants.h"
-#include "angle_units.h"
-
-#include "functions.h"
-
-#include "pairs.h"
-#include "affine.h"
-#include "screen_mask.h"
-
-#include "length.h"
-
-#include "marker_style.h"
-#include "label_style.h"
-
-#include "format.h"
-#include "state.h"
-
-#include "picture_data.h"
-#include "picture.h"
-
-#include "glyph.h"
-
-namespace ePiX {
-
-  glyph::glyph(const pair& here, const pair& offset,
-	       const std::string& label, const epix_mark_type mark,
-	       const marker_sizes& sizes,
-	       const label_state& style, const bool seen)
-    : m_here(here), m_offset(offset),
-      m_label(label), m_mark(mark), m_sizes(sizes),
-      m_style(style), m_seen(seen) { }
-
-  glyph& glyph::map_by(const affine& f)
-  {
-    m_here = f(m_here); // new location
-
-    // map offset, preserving length
-    const double old_norm(norm(m_offset));
-    m_offset = f(m_offset) - f(pair(0,0)); // new displacement
-
-    const double new_norm(norm(m_offset));
-    if (EPIX_EPSILON < new_norm)
-      m_offset *= old_norm/new_norm; // scale to preserve page length
-
-    // compute new label angle; work in radians for safety/efficiency
-    const double th(PI_180*m_style.label_angle()); // old angle in radians
-
-    // new baseline direction
-    const pair tmp_dir(f(pair(std::cos(th), std::sin(th))) - f(pair(0,0)));
-
-    // no change if old baseline maps to zero
-    if (EPIX_EPSILON < norm(tmp_dir))
-      {
-	// new angle in current units
-	double theta(Atan2(tmp_dir.x2(), tmp_dir.x1()));
-
-	// effectively, reflect label; works well stylistically
-	if (f.reverses_orientation())
-	  theta -= 0.5*full_turn();
-
-	m_style.label_angle(theta);
-      }
-
-    return *this;
-  }
-
-  glyph& glyph::crop_to(const screen_mask& M)
-  {
-    if (M.crops(m_here))
-      m_seen = false;
-
-    return *this;
-  }
-
-  glyph* glyph::clone() const
-  {
-    return new glyph(*this);
-  }
-
-  bool glyph::is_empty() const
-  {
-    return !m_seen;
-  }
-
-
-  std::string glyph::print_to(const format& fmt, const std::string& len) const
-  {
-    if (is_empty())
-      return "";
-
-    std::stringstream obuf;
-    // print (masked) label, if any, before mark.
-    if (m_label != "")
-      obuf << fmt.print_text(m_here, m_offset, m_label, m_style, len);
-
-    if (m_mark != TEXT && m_mark != PATH)
-      obuf << fmt.print_mark(m_here, m_offset, m_mark, m_sizes, m_style, len);
-
-    return obuf.str();
-  }
-
-  void glyph::add_to_pallet() const
-  {
-    the_picture().add_to_pallet(m_style.text_color())
-      .add_to_pallet(m_style.mask_color())
-      .add_to_pallet(m_style.label_border().color());
-  }
-} // end of namespace
diff --git a/graphics/epix/glyph.h b/graphics/epix/glyph.h
deleted file mode 100644
index 44f7fb8cec..0000000000
--- a/graphics/epix/glyph.h
+++ /dev/null
@@ -1,85 +0,0 @@
-/* 
- * glyph.h -- ePiX screen implemenation for labels and markers
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX
- *
- * Version 1.1.18
- * Last Change: September 16, 2007
- *
- * 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- *
- *
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#ifndef EPIX_GLYPH
-#define EPIX_GLYPH
-
-#include <string>
-
-#include "pairs.h"
-#include "length.h"
-#include "Color.h"
-
-#include "marker_style.h"
-#include "label_style.h"
-#include "tile.h"
-
-namespace ePiX {
-
-  class format;
-  class affine;
-  class screen_mask;
-
-  class glyph : public tile {
-  public:
-    // location, offsets, contents, mark type, visibility
-    glyph(const pair& here, const pair& offset,
-	  const std::string& label, const epix_mark_type mark,
-	  const marker_sizes& sizes, 
-	  const label_state& style, const bool seen);
-
-    glyph& map_by(const affine&);
-    glyph& crop_to(const screen_mask&);
-
-    glyph* clone() const;
-
-    bool is_empty() const;
-
-    std::string print_to(const format&, const std::string&) const;
-    void add_to_pallet() const;
-
-  private:
-    pair m_here;
-    pair m_offset;
-
-    std::string m_label;
-    epix_mark_type m_mark;
-
-    marker_sizes m_sizes;
-    label_state m_style;
-
-    bool m_seen;
-  }; // end of class glyph
-
-} // end of namespace
-
-#endif /* EPIX_GLYPH */
diff --git a/graphics/epix/halfspace.cc b/graphics/epix/halfspace.cc
deleted file mode 100644
index 4be13a979c..0000000000
--- a/graphics/epix/halfspace.cc
+++ /dev/null
@@ -1,67 +0,0 @@
-/* 
- * halfspace.cc -- ePiX::halfspace class for clipping
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.8
- * Last Change: July 17, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#include <list>
-
-#include "triples.h"
-#include "edge_data.h"
-#include "crop_algorithms.h"
-
-#include "halfspace.h"
-
-namespace ePiX {
-
-  halfspace::halfspace(const P& base, const P& perp)
-    : m_base(base), m_perp((1.0/norm(perp))*perp) { }
-
-  halfspace& halfspace::reverse()
-  {
-    m_perp *= -1;
-    return *this;
-  }
-
-  bool halfspace::clips(const P& arg) const
-  {
-    return height(m_perp, m_base, arg) < -EPIX_EPSILON;
-  }
-
-  std::list<edge3d>& halfspace::clip_path(std::list<edge3d>& L) const
-  {
-    return chop_path<P>(m_perp, m_base, L);
-  }
-
-  std::list<edge3d>& halfspace::clip_loop(std::list<edge3d>& L) const
-  {
-    return chop_loop<P>(m_perp, m_base, L);
-  }
-} // end of namespace
diff --git a/graphics/epix/halfspace.h b/graphics/epix/halfspace.h
deleted file mode 100644
index 44f4a8a89c..0000000000
--- a/graphics/epix/halfspace.h
+++ /dev/null
@@ -1,67 +0,0 @@
-/* 
- * halfspace.h -- ePiX::halfspace class for clipping
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.8
- * Last Change: July 17, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-/*
- * This file provides the halfspace class for path clipping.
- * A halfspace contains a base point p and a unit vector n, and defines the
- * affine half space (x-p)|n > 0; n points "inward".
- */
-#ifndef EPIX_HALFSPACE
-#define EPIX_HALFSPACE
-
-#include <list>
-
-#include "triples.h"
-#include "edge_data.h"
-
-namespace ePiX {
-
-  class halfspace {
-  public:
-    halfspace(const P& base, const P& perp);
-
-    halfspace& reverse();
-
-    bool clips(const P&) const;
-
-    std::list<edge3d>& clip_path(std::list<edge3d>&) const;
-    std::list<edge3d>& clip_loop(std::list<edge3d>&) const;
-
-  private:
-    P m_base;
-    P m_perp;
-  }; // end of class halfspace
-} // end of namespace
-
-#endif /* EPIX_HALFSPACE */
diff --git a/graphics/epix/hatching.cc b/graphics/epix/hatching.cc
deleted file mode 100644
index 00fe64b7a3..0000000000
--- a/graphics/epix/hatching.cc
+++ /dev/null
@@ -1,258 +0,0 @@
-/* 
- * hatching.cc -- ePiX's internal data for filled polygons
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.2.0-2
- * Last Change: September 26, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#include <list>
-#include <vector>
-#include <cmath>
-
-#include "errors.h"
-
-#include "constants.h"
-#include "functions.h"
-#include "pairs.h"
-
-#include "edge_data.h"
-
-#include "state.h"
-#include "hatching.h"
-
-namespace ePiX {
-
-  bd_edge::bd_edge(const edge2d& edge, double ht1, double ht2, int orient)
-    : m_edge(edge), m_lo(min(ht1, ht2)), m_hi(max(ht1, ht2)),
-      m_orient(orient) { }
-
-  pair bd_edge::tail() const
-  {
-    return m_edge.tail();
-  }
-
-  pair bd_edge::head() const
-  {
-    return m_edge.head();
-  }
-
-  pair bd_edge::dir() const
-  {
-    return m_edge.head() - m_edge.tail();
-  }
-
-  double bd_edge::lo() const
-  {
-    return m_lo;
-  }
-
-  double bd_edge::hi() const
-  {
-    return m_hi;
-  }
-
-  int bd_edge::orient() const
-  {
-    return m_orient;
-  }
-
-
-  cut::cut(pair loc, int sign)
-    : m_loc(loc), m_sign(sign) { }
-
-  pair cut::loc() const
-  {
-    return m_loc;
-  }
-
-  int cut::sign() const
-  {
-    return m_sign;
-  }
-
-
-  // (h-t) assumed unit
-  scan_line::scan_line(const pair& t, const pair& h)
-    : m_perp(J(t - h)), m_ht(h.x1()*t.x2() - h.x2()*t.x1()) { }
-
-
-  // keep m_cuts sorted by x
-  void scan_line::add_cut(const cut& crossing)
-  {
-    if (EPIX_EPSILON < fabs((m_perp|crossing.loc()) + m_ht))
-      return;
-
-    const double x(J(m_perp)|crossing.loc());
-
-    std::list<cut>::iterator p(m_cuts.begin());
-
-    while (p != m_cuts.end() && (J(m_perp)|(*p).loc()) < x)
-      ++p;
-
-    m_cuts.insert(p, crossing);
-  }
-
-
-  // add scans to value
-  void scan_line::draw(std::vector<edge2d>& value) const
-  {
-    std::list<cut>::const_iterator p(m_cuts.begin());
-
-    if (p == m_cuts.end()) // redundant guard
-      return;
-
-    int winding((*p).sign());
-
-    pair start((*p).loc());
-    pair end(start);
-
-    while (p != m_cuts.end())
-      {
-	// non-zero winding rule
-	while (winding != 0 && ++p != m_cuts.end())
-	  {
-	    end = (*p).loc();
-	    winding += (*p).sign();
-	  }
-
-	if (start != end)
-	  value.push_back(edge2d(start, end, true));
-
-	// seek to next start
-	while (winding == 0 && ++p != m_cuts.end())
-	  {
-	    start = (*p).loc();
-	    winding += (*p).sign();
-	  }
-      }
-  } // end of scan_line::draw
-
-
-  // private function; assumes horiz is unit
-  void hatch_data::hatch_init(const pair& horiz,
-			      double sep,
-			      std::list<edge2d> polygon)
-  {
-    const pair vert(J(horiz));
-
-    // initialize loop with first edge
-    std::list<edge2d>::iterator p(polygon.begin());
-
-    // first pass: Get min, max vertex heights; remove horizontal edges
-    double min_ht((*p).tail()|vert);
-    double max_ht(min_ht);
-
-    for (p = polygon.begin(); p != polygon.end(); ) // increment at bottom
-      {
-	double tmp_tl((*p).tail()|vert);
-	double tmp_hd((*p).head()|vert);
-
-	if (fabs(tmp_hd - tmp_tl) < EPIX_EPSILON) // horizontal edge
-	  p = polygon.erase(p);
-
-	else
-	  {
-	    // running extrema from head height
-	    min_ht = min(min_ht, tmp_hd);
-	    max_ht = max(max_ht, tmp_hd);
-
-	    int up(tmp_tl < tmp_hd ? 1 : -1); // get edge orientation
-	    m_edges.push_back(bd_edge(*p, tmp_tl, tmp_hd, up));
-	    ++p;
-	  }
-      }
-
-    // compute subdivision heights, initialize vector of scan_lines
-    unsigned int num_cuts((unsigned int) ceil((max_ht - min_ht)/sep));
-    const double true_sep((max_ht - min_ht)/num_cuts);
-
-    // initialize hatch lines
-    for (unsigned int i=0; i <= num_cuts; ++i)
-      {
-	double ht(min_ht + i*true_sep);
-	m_scans.push_back(scan_line(ht*vert, horiz + ht*vert));
-      }
-
-    // Second pass: add scan line cuts
-    for (std::list<bd_edge>::iterator ep=m_edges.begin();
-	 ep != m_edges.end(); ++ep)
-      {
-	// indices of scan lines we cross
-	unsigned int i_min((unsigned int)  ceil(((*ep).lo()-min_ht)/true_sep));
-	unsigned int i_max((unsigned int) floor(((*ep).hi()-min_ht)/true_sep));
-
-	// compute parameters once per edge
-	const pair tl((*ep).tail());
-	const pair dir((*ep).dir());
-
-	// relative heights of endpoints
-	const double ht_hd((*ep).head()|vert);
-	const double ht_tl(tl|vert);
-
-	const int up((*ep).orient());
-
-	for (unsigned int i = i_min; i <= i_max; ++i)
-	  {
-	    const double t((min_ht + i*true_sep - ht_tl)/(ht_hd - ht_tl));
-	    m_scans.at(i).add_cut(cut(tl + t*dir, up));
-	  }
-      }
-  } // end of hatch_init
-
-
-  // user-visible constructors
-  hatch_data::hatch_data(double dir_x, double dir_y,
-			 double sep, const std::list<edge2d>& polygon)
-  {
-    pair dir(dir_x, dir_y);
-    dir *= 1.0/norm(dir);
-
-    hatch_init(dir, sep, polygon);
-  }
-
-  hatch_data::hatch_data(double th, double sep,
-			 const std::list<edge2d>& polygon)
-  {
-    const double theta(th*PI_180); // th in radians
-
-    // orthonormal basis; horiz along cuts, vert perp to cuts
-    hatch_init(pair(std::cos(theta), std::sin(theta)), sep, polygon);
-  }
-
-
-  std::vector<edge2d> hatch_data::data() const
-  {
-    std::vector<edge2d> value;
-
-    for (unsigned int i=0; i < m_scans.size(); ++i)
-      m_scans.at(i).draw(value);
-
-    return value;
-  }
-} // end of namespace
diff --git a/graphics/epix/hatching.h b/graphics/epix/hatching.h
deleted file mode 100644
index 877efde8c8..0000000000
--- a/graphics/epix/hatching.h
+++ /dev/null
@@ -1,123 +0,0 @@
-/* 
- * hatching.h -- ePiX hatched region data structures
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.13
- * Last Change: August 29, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#ifndef EPIX_HATCHING
-#define EPIX_HATCHING
-
-#include <list>
-#include <vector>
-
-#include "pairs.h"
-#include "edge_data.h"
-
-namespace ePiX {
-
-  // edge, endpoint heights, orientation (+/-1 = up/down)
-  class bd_edge {
-  public:
-    bd_edge(const edge2d&, double, double, int);
-
-    pair tail() const;
-    pair head() const;
-    pair dir() const;
-
-    double lo() const;
-    double hi() const;
-
-    int orient() const;
-
-  private:
-    edge2d m_edge;
-
-    double m_lo;
-    double m_hi;
-
-    int m_orient;
-  };
-
-  // location where scan line crosses bd_edge
-  class cut {
-  public:
-    cut(pair loc, int sign);
-
-    pair loc() const;
-    int sign() const;
-
-  private:
-    pair m_loc; // location
-    int m_sign; // orientation
-  };
-
-  // ax + by + c = 0
-  class scan_line {
-  public:
-    scan_line(const pair& t, const pair& h);
-
-    void add_cut(const cut&);
-
-    // store what we find in value
-    void draw(std::vector<edge2d>& value) const;
-
-  private:
-    pair m_perp; // (a, b)
-    double m_ht; // c
-
-    std::list<cut> m_cuts;
-  }; // end of class scan_line
-
-
-  // ctor converts a list of edge2d into a (large) vector of scan lines
-  class hatch_data {
-  public:
-    // components of hatch direction, scanline separation, polygon to fill
-    hatch_data(double, double,
-	       double sep, const std::list<edge2d>&);
-
-    // angle, scanline separation, polygon to fill
-    hatch_data(double th, double sep, const std::list<edge2d>&);
-
-    std::vector<edge2d> data() const;
-
-  private:
-    std::list<bd_edge> m_edges;
-    std::vector<scan_line> m_scans;
-
-    // convert polygon to scan lines parallel to dir, common to both ctors
-    void hatch_init(const pair& dir,
-		    double sep,
-		    std::list<edge2d> polygon);
-  }; // end of class hatch_data
-
-} // end of namespace
-
-#endif /* EPIX_HATCHING */
diff --git a/graphics/epix/install-sh b/graphics/epix/install-sh
deleted file mode 100644
index 4d4a9519ea..0000000000
--- a/graphics/epix/install-sh
+++ /dev/null
@@ -1,323 +0,0 @@
-#!/bin/sh
-# install - install a program, script, or datafile
-
-scriptversion=2005-05-14.22
-
-# This originates from X11R5 (mit/util/scripts/install.sh), which was
-# later released in X11R6 (xc/config/util/install.sh) with the
-# following copyright and license.
-#
-# Copyright (C) 1994 X Consortium
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documentation files (the "Software"), to
-# deal in the Software without restriction, including without limitation the
-# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
-# sell copies of the Software, and to permit persons to whom the Software is
-# furnished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
-# X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
-# AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNEC-
-# TION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-#
-# Except as contained in this notice, the name of the X Consortium shall not
-# be used in advertising or otherwise to promote the sale, use or other deal-
-# ings in this Software without prior written authorization from the X Consor-
-# tium.
-#
-#
-# FSF changes to this file are in the public domain.
-#
-# Calling this script install-sh is preferred over install.sh, to prevent
-# `make' implicit rules from creating a file called install from it
-# when there is no Makefile.
-#
-# This script is compatible with the BSD install script, but was written
-# from scratch.  It can only install one file at a time, a restriction
-# shared with many OS's install programs.
-
-# set DOITPROG to echo to test this script
-
-# Don't use :- since 4.3BSD and earlier shells don't like it.
-doit="${DOITPROG-}"
-
-# put in absolute paths if you don't have them in your path; or use env. vars.
-
-mvprog="${MVPROG-mv}"
-cpprog="${CPPROG-cp}"
-chmodprog="${CHMODPROG-chmod}"
-chownprog="${CHOWNPROG-chown}"
-chgrpprog="${CHGRPPROG-chgrp}"
-stripprog="${STRIPPROG-strip}"
-rmprog="${RMPROG-rm}"
-mkdirprog="${MKDIRPROG-mkdir}"
-
-chmodcmd="$chmodprog 0755"
-chowncmd=
-chgrpcmd=
-stripcmd=
-rmcmd="$rmprog -f"
-mvcmd="$mvprog"
-src=
-dst=
-dir_arg=
-dstarg=
-no_target_directory=
-
-usage="Usage: $0 [OPTION]... [-T] SRCFILE DSTFILE
-   or: $0 [OPTION]... SRCFILES... DIRECTORY
-   or: $0 [OPTION]... -t DIRECTORY SRCFILES...
-   or: $0 [OPTION]... -d DIRECTORIES...
-
-In the 1st form, copy SRCFILE to DSTFILE.
-In the 2nd and 3rd, copy all SRCFILES to DIRECTORY.
-In the 4th, create DIRECTORIES.
-
-Options:
--c         (ignored)
--d         create directories instead of installing files.
--g GROUP   $chgrpprog installed files to GROUP.
--m MODE    $chmodprog installed files to MODE.
--o USER    $chownprog installed files to USER.
--s         $stripprog installed files.
--t DIRECTORY  install into DIRECTORY.
--T         report an error if DSTFILE is a directory.
---help     display this help and exit.
---version  display version info and exit.
-
-Environment variables override the default commands:
-  CHGRPPROG CHMODPROG CHOWNPROG CPPROG MKDIRPROG MVPROG RMPROG STRIPPROG
-"
-
-while test -n "$1"; do
-  case $1 in
-    -c) shift
-        continue;;
-
-    -d) dir_arg=true
-        shift
-        continue;;
-
-    -g) chgrpcmd="$chgrpprog $2"
-        shift
-        shift
-        continue;;
-
-    --help) echo "$usage"; exit $?;;
-
-    -m) chmodcmd="$chmodprog $2"
-        shift
-        shift
-        continue;;
-
-    -o) chowncmd="$chownprog $2"
-        shift
-        shift
-        continue;;
-
-    -s) stripcmd=$stripprog
-        shift
-        continue;;
-
-    -t) dstarg=$2
-	shift
-	shift
-	continue;;
-
-    -T) no_target_directory=true
-	shift
-	continue;;
-
-    --version) echo "$0 $scriptversion"; exit $?;;
-
-    *)  # When -d is used, all remaining arguments are directories to create.
-	# When -t is used, the destination is already specified.
-	test -n "$dir_arg$dstarg" && break
-        # Otherwise, the last argument is the destination.  Remove it from $@.
-	for arg
-	do
-          if test -n "$dstarg"; then
-	    # $@ is not empty: it contains at least $arg.
-	    set fnord "$@" "$dstarg"
-	    shift # fnord
-	  fi
-	  shift # arg
-	  dstarg=$arg
-	done
-	break;;
-  esac
-done
-
-if test -z "$1"; then
-  if test -z "$dir_arg"; then
-    echo "$0: no input file specified." >&2
-    exit 1
-  fi
-  # It's OK to call `install-sh -d' without argument.
-  # This can happen when creating conditional directories.
-  exit 0
-fi
-
-for src
-do
-  # Protect names starting with `-'.
-  case $src in
-    -*) src=./$src ;;
-  esac
-
-  if test -n "$dir_arg"; then
-    dst=$src
-    src=
-
-    if test -d "$dst"; then
-      mkdircmd=:
-      chmodcmd=
-    else
-      mkdircmd=$mkdirprog
-    fi
-  else
-    # Waiting for this to be detected by the "$cpprog $src $dsttmp" command
-    # might cause directories to be created, which would be especially bad
-    # if $src (and thus $dsttmp) contains '*'.
-    if test ! -f "$src" && test ! -d "$src"; then
-      echo "$0: $src does not exist." >&2
-      exit 1
-    fi
-
-    if test -z "$dstarg"; then
-      echo "$0: no destination specified." >&2
-      exit 1
-    fi
-
-    dst=$dstarg
-    # Protect names starting with `-'.
-    case $dst in
-      -*) dst=./$dst ;;
-    esac
-
-    # If destination is a directory, append the input filename; won't work
-    # if double slashes aren't ignored.
-    if test -d "$dst"; then
-      if test -n "$no_target_directory"; then
-	echo "$0: $dstarg: Is a directory" >&2
-	exit 1
-      fi
-      dst=$dst/`basename "$src"`
-    fi
-  fi
-
-  # This sed command emulates the dirname command.
-  dstdir=`echo "$dst" | sed -e 's,/*$,,;s,[^/]*$,,;s,/*$,,;s,^$,.,'`
-
-  # Make sure that the destination directory exists.
-
-  # Skip lots of stat calls in the usual case.
-  if test ! -d "$dstdir"; then
-    defaultIFS='
-	 '
-    IFS="${IFS-$defaultIFS}"
-
-    oIFS=$IFS
-    # Some sh's can't handle IFS=/ for some reason.
-    IFS='%'
-    set x `echo "$dstdir" | sed -e 's@/@%@g' -e 's@^%@/@'`
-    shift
-    IFS=$oIFS
-
-    pathcomp=
-
-    while test $# -ne 0 ; do
-      pathcomp=$pathcomp$1
-      shift
-      if test ! -d "$pathcomp"; then
-        $mkdirprog "$pathcomp"
-	# mkdir can fail with a `File exist' error in case several
-	# install-sh are creating the directory concurrently.  This
-	# is OK.
-	test -d "$pathcomp" || exit
-      fi
-      pathcomp=$pathcomp/
-    done
-  fi
-
-  if test -n "$dir_arg"; then
-    $doit $mkdircmd "$dst" \
-      && { test -z "$chowncmd" || $doit $chowncmd "$dst"; } \
-      && { test -z "$chgrpcmd" || $doit $chgrpcmd "$dst"; } \
-      && { test -z "$stripcmd" || $doit $stripcmd "$dst"; } \
-      && { test -z "$chmodcmd" || $doit $chmodcmd "$dst"; }
-
-  else
-    dstfile=`basename "$dst"`
-
-    # Make a couple of temp file names in the proper directory.
-    dsttmp=$dstdir/_inst.$$_
-    rmtmp=$dstdir/_rm.$$_
-
-    # Trap to clean up those temp files at exit.
-    trap 'ret=$?; rm -f "$dsttmp" "$rmtmp" && exit $ret' 0
-    trap '(exit $?); exit' 1 2 13 15
-
-    # Copy the file name to the temp name.
-    $doit $cpprog "$src" "$dsttmp" &&
-
-    # and set any options; do chmod last to preserve setuid bits.
-    #
-    # If any of these fail, we abort the whole thing.  If we want to
-    # ignore errors from any of these, just make sure not to ignore
-    # errors from the above "$doit $cpprog $src $dsttmp" command.
-    #
-    { test -z "$chowncmd" || $doit $chowncmd "$dsttmp"; } \
-      && { test -z "$chgrpcmd" || $doit $chgrpcmd "$dsttmp"; } \
-      && { test -z "$stripcmd" || $doit $stripcmd "$dsttmp"; } \
-      && { test -z "$chmodcmd" || $doit $chmodcmd "$dsttmp"; } &&
-
-    # Now rename the file to the real destination.
-    { $doit $mvcmd -f "$dsttmp" "$dstdir/$dstfile" 2>/dev/null \
-      || {
-	   # The rename failed, perhaps because mv can't rename something else
-	   # to itself, or perhaps because mv is so ancient that it does not
-	   # support -f.
-
-	   # Now remove or move aside any old file at destination location.
-	   # We try this two ways since rm can't unlink itself on some
-	   # systems and the destination file might be busy for other
-	   # reasons.  In this case, the final cleanup might fail but the new
-	   # file should still install successfully.
-	   {
-	     if test -f "$dstdir/$dstfile"; then
-	       $doit $rmcmd -f "$dstdir/$dstfile" 2>/dev/null \
-	       || $doit $mvcmd -f "$dstdir/$dstfile" "$rmtmp" 2>/dev/null \
-	       || {
-		 echo "$0: cannot unlink or rename $dstdir/$dstfile" >&2
-		 (exit 1); exit 1
-	       }
-	     else
-	       :
-	     fi
-	   } &&
-
-	   # Now rename the file to the real destination.
-	   $doit $mvcmd "$dsttmp" "$dstdir/$dstfile"
-	 }
-    }
-  fi || { (exit 1); exit 1; }
-done
-
-# The final little trick to "correctly" pass the exit status to the exit trap.
-{
-  (exit 0); exit 0
-}
-
-# Local variables:
-# eval: (add-hook 'write-file-hooks 'time-stamp)
-# time-stamp-start: "scriptversion="
-# time-stamp-format: "%:y-%02m-%02d.%02H"
-# time-stamp-end: "$"
-# End:
diff --git a/graphics/epix/intersections.cc b/graphics/epix/intersections.cc
deleted file mode 100644
index 6789e64dbe..0000000000
--- a/graphics/epix/intersections.cc
+++ /dev/null
@@ -1,318 +0,0 @@
-/* 
- * intersections.cc -- ePiX's intersection operators
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.17
- * Last Change: September 13, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#include <cmath>
-
-#include "constants.h"
-#include "errors.h"
-
-#include "circle.h"
-#include "plane.h"
-#include "segment.h"
-#include "sphere.h"
-
-#include "intersections.h"
-
-namespace ePiX {
-
-  static const double EPS(EPIX_EPSILON);
-
-  Segment operator* (const Circle& arg1, const Circle& arg2)
-  {
-    if (arg1.malformed() || arg2.malformed())
-      return Segment(true);
-
-    const P p2(arg2.center());
-    const P n2(arg2.perp());
-
-    P dir(p2 - arg1.center()); // displacement between centers
-
-    const double r1(arg1.radius());
-    const double r2(arg2.radius());
-    const double rad_diff(fabs(r2 - r1));
-    const double rad_sum(r2 + r1);
-    const double sep(norm(dir));
-
-    if ( EPS < norm(arg1.perp()*arg2.perp()) || // non-coplanar
-	 rad_sum <= sep || // separated
-	 sep <= rad_diff ) // concentric, catches equality
-      return Segment(true);
-
-    // else
-    dir *= 1.0/sep;
-
-    const double COS(((r1-r2)*(r1+r2) - sep*sep)/(2*r2*sep));
-    const double SIN(sqrt((1-COS)*(1+COS)));
-
-    return Segment(p2 + r2*(COS*dir + SIN*(n2*dir)),
-		   p2 + r2*(COS*dir - SIN*(n2*dir)));
-  }
-
-
-  Segment operator* (const Circle& circ,  const Plane& pl)
-  {
-    if (circ.malformed() || pl.malformed())
-      return Segment(true);
-
-    // else
-    P bi_perp(circ.perp()*pl.perp());
-    const double denom(norm(bi_perp));
-
-    if (denom < EPS) // parallel
-      return Segment(true);
-
-    // else
-    bi_perp *= 1.0/denom;
-
-    const P dir(bi_perp*circ.perp()); // unit vector toward pl in circ plane
-
-    // shortest distance from circ.center() to pl in circ plane
-    const double x(-((circ.center() - pl.pt())|pl.perp())/(dir|pl.perp()));
-
-    const double rad(circ.radius());
-
-    if (rad <= fabs(x)) // disjoint
-      return Segment(true);
-
-    // else
-    const P vec_y(sqrt((rad-x)*(rad+x))*bi_perp);
-    const P midpt(circ.center() + x*dir);
-
-    return Segment(midpt - vec_y, midpt + vec_y);
-  }
-
-  // Extend seg into a line, look for two crossings
-  Segment operator* (const Circle& circ, const Segment& seg)
-  {
-    if (seg.malformed() || circ.malformed())
-      return Segment(true);
-
-    // else
-    const P dir(seg.end2() - seg.end1());
-
-    if (EPS < fabs(dir|circ.perp()))
-      return Segment(true);
-
-    // else
-    P to_ctr(circ.center() - seg.end1());
-    P perp(circ.perp()*dir);
-	
-    const double dist((to_ctr|perp)/norm(perp));
-    const double rad(circ.radius());
-
-    if (rad <= fabs(dist))
-      return Segment(true);
-
-    // else
-    const P vec_x(circ.center() - (dist/norm(perp))*perp);
-    const P vec_y((sqrt((rad-dist)*(rad+dist))/norm(dir))*dir);
-
-    return Segment(vec_x + vec_y, vec_x - vec_y);
-  }
-
-
-  // cut plane of circ by S, intersect
-  Segment operator* (const Circle& circ,  const Sphere& S)
-  {
-    Plane pl(circ.center(), circ.perp());
-    return circ*(pl*S);
-  }
-
-  Segment operator* (const Plane& pl1, const Plane& pl2)
-  {
-    if (pl1.malformed() || pl2.malformed())
-      return Segment(true);
-
-    // else
-    P N3((pl1.perp())*(pl2.perp()));
-    const double temp(norm(N3));
-
-    if (temp < EPS) // parallel
-      return Segment(true);
-
-    // else N3 non-zero, parallel to intersection
-    N3 *= 1/temp; // normalize
-
-    P perp((pl1.perp())*N3); // unit vector in pl, perp to intersection
-    P pt(pl1.pt() + (((pl2.pt()-pl1.pt())|pl2.perp())/(perp|pl2.perp()))*perp);
-    P ctr(pt %= N3); // closest pt to origin on line
-    // P ctr(pt - (pt|N3)*N3);
-
-    return Segment(ctr - EPIX_INFTY*N3, ctr + EPIX_INFTY*N3);
-  }
-
-
-  P operator* (const Plane& pl, const Segment& seg)
-  {
-    if (pl.malformed() || seg.malformed())
-      epix_warning("Malformed argument(s) to Plane*Segment");
-
-    const P tail(seg.end1());
-    const P head(seg.end2());
-
-    const double ptail((tail - pl.pt())|pl.perp());
-    const double phead((head - pl.pt())|pl.perp());
-
-    if (fabs(phead - ptail) < EPS)
-      epix_warning("Plane parallel to Segment in intersection");
-
-    return tail + (ptail/(ptail-phead))*(head-tail);
-  }
-
-
-  Circle  operator* (const Plane& pl, const Sphere& S)
-  {
-    if (pl.malformed() || S.malformed())
-      return Circle(true);
-
-    // else
-    const double rad(S.radius());
-    const double ht((pl.pt() - S.center())|pl.perp());
-
-    if (rad <= fabs(ht)) // disjoint
-      return Circle(true);
-
-    else
-      return Circle(S.center() + ht*pl.perp(),
-		    sqrt((rad - ht)*(rad + ht)),
-		    pl.perp());
-  }
-
-
-  P operator* (const Segment& seg1, const Segment& seg2)
-  {
-    if (seg1.malformed() || seg2.malformed())
-      epix_warning("Malformed argument(s) in Segment intersection");
-
-    const P p1(seg1.end1());
-    const P dir1(seg1.end2() - p1);
-
-    const P p3(seg2.end1());
-    const P p4(seg2.end2());
-    const P dir2(p4 - p3);
-
-    P perp(dir1*dir2);
-    double normal_length();
-
-    // non-coplanar or parallel
-    if (EPS < fabs((dir1*(p3 - p1)) | (p4 - p1)) || norm(perp) < EPS)
-      epix_warning("Non-generic arguments in Segment intersection");
-
-    // perp lies in plane of segments, is orthog to dir2
-    perp *= dir2;
-
-    // get t so that normal|(X - p3) = (normal|(p1 - p3 + t*dir1)) = 0.
-    // note: X may not lie on either segment
-    return p1 + ((perp|(p3-p1))/(perp|dir1))*dir1;
-  }
-
-  // extend seg into a line
-  Segment operator* (const Segment& seg, const Sphere& S)
-  {
-    if (seg.malformed() || S.malformed())
-      return Segment(true);
-
-    // else
-    P dir(seg.end2() - seg.end1());
-    dir *= 1.0/norm(dir);
-
-    const P posn(S.center() - seg.end1());
-    const P perp(posn%dir);
-
-    if (S.radius() <= norm(perp)) // disjoint
-      return Segment(true);
-
-    // else
-    const double B(dir|posn);
-    const double C((posn|posn)-pow(S.radius(), 2));
-    const double discrim(sqrt(B*B - C)); // [sic]
-
-    return Segment(seg.end1() + (B-discrim)*dir,
-		   seg.end1() + (B+discrim)*dir);
-  }
-
-  Circle operator* (const Sphere& sph1, const Sphere& sph2)
-  {
-    if (sph1.malformed() || sph2.malformed())
-      return Circle(true);
-
-    // else
-    const double r1(sph1.radius());
-    const double r2(sph2.radius());
-    P dir(sph2.center() - sph1.center());
-
-    const double dist(norm(dir));
-
-    // separated, tangent, or concentric
-    if (r1+r2 <= dist || dist <= fabs(r2-r1))
-      return Circle(true);
-
-    // else
-    const double x(0.5*(dist + (r1-r2)*(r1+r2)/dist));
-    const P perp((1/dist)*dir);
-
-    return Circle(sph1.center() + x*perp, sqrt((r1-x)*(r1+x)), perp);
-  }
-
-
-  // derived operators
-  Segment operator* (const Plane& pl,   const Circle& circ)
-  {
-    return circ*pl;
-  }
-
-  Segment operator* (const Segment& seg, const Circle& circ)
-  {
-    return circ*seg;
-  }
-
-  Segment operator* (const Sphere& S,  const Circle& circ)
-  {
-    return circ*S;
-  }
-
-  P       operator* (const Segment& seg, const Plane& pl)
-  {
-    return pl*seg;
-  }
-
-  Circle  operator* (const Sphere& S,  const Plane& pl)
-  {
-    return pl*S;
-  }
-
-  Segment operator* (const Sphere& S,  const Segment& seg)
-  {
-    return seg*S;
-  }
-} // end of namespace
diff --git a/graphics/epix/intersections.h b/graphics/epix/intersections.h
deleted file mode 100644
index edf7b05569..0000000000
--- a/graphics/epix/intersections.h
+++ /dev/null
@@ -1,70 +0,0 @@
-/* 
- * intersections.h -- Circle, Plane, Segment, Sphere intersection operators 
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.9
- * Last Change: July 30, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#ifndef EPIX_INTERSECTIONS
-#define EPIX_INTERSECTIONS
-
-namespace ePiX {
-
-  class Circle;
-  class Plane;
-  class Segment;
-  class Sphere;
-
-  Segment operator* (const Circle&,  const Circle&);
-  Segment operator* (const Circle&,  const Plane&);
-  Segment operator* (const Circle&,  const Segment&);
-  Segment operator* (const Circle&,  const Sphere&);
-
-  Segment operator* (const Plane&,   const Plane&);
-  P       operator* (const Plane&,   const Segment&);
-  Circle  operator* (const Plane&,   const Sphere&);
-
-  P       operator* (const Segment&, const Segment&);
-  Segment operator* (const Segment&, const Sphere&);
-
-  Circle  operator* (const Sphere&,  const Sphere&);
-
-  // derived operators with reversed argument order
-  Segment operator* (const Plane&,   const Circle&);
-  Segment operator* (const Segment&, const Circle&);
-  Segment operator* (const Sphere&,  const Circle&);
-
-  P       operator* (const Segment&, const Plane&);
-  Circle  operator* (const Sphere&,  const Plane&);
-
-  Segment operator* (const Sphere&,  const Segment&);
-
-} // end of namespace
-
-#endif /* EPIX_INTERSECTIONS */
diff --git a/graphics/epix/interval.cc b/graphics/epix/interval.cc
deleted file mode 100644
index 11f7a2aace..0000000000
--- a/graphics/epix/interval.cc
+++ /dev/null
@@ -1,228 +0,0 @@
-/* 
- * interval.cc -- ePiX::interval class functions
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.2.0-2
- * Last Change: September 26, 2007
- *
- * 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- *
- *
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- */
-#include <cstdlib>
-#include <string>
-
-#include "functions.h"
-#include "interval.h"
-
-namespace ePiX {
-
-  // expect arg of the form (a,b), [a,b), (a,b], or [a,b]
-  interval::interval(std::string arg)
-    : m_closed_l(true), m_closed_r(true)
-  {
-    std::string::size_type i(arg.find_first_of("[("));
-
-    if (i == std::string::npos) // return "empty interval"
-      {
-	m_rmin=1;
-	m_rmax=0;
-	return;
-      }
-
-    // else
-    arg.erase(0, i);
-
-    if (arg.at(0) == '(')
-      m_closed_l = false;
-
-    // expect numerical argument
-    i = arg.find_first_of("-0123456789.");
-    if (i == std::string::npos)
-      {
-	m_rmin=1;
-	m_rmax=0;
-	return;
-      }
-
-    arg.erase(0, i);
-
-    // get left endpoint
-    const char* tmp1(arg.c_str());
-    char* new_arg;
-    m_rmin = strtod(tmp1, &new_arg);
-    arg=new_arg;
-
-    i = arg.find_first_of(",");
-    if (i == std::string::npos)
-      {
-	m_rmax=0;
-	m_rmin=1;
-	return;
-      }
-
-    arg.erase(0, i);
-
-    // expect another numerical argument
-    i = arg.find_first_of("-0123456789.");
-    if (i == std::string::npos)
-      {
-	m_rmax=0;
-	m_rmin=1;
-	return;
-      }
-
-    arg.erase(0, i);
-
-    const char* tmp2(arg.c_str());
-    m_rmax = strtod(tmp2, &new_arg);
-    arg=new_arg;
-
-    i = arg.find_first_of(")]");
-
-    if (i == std::string::npos)
-      {
-	m_rmax=0;
-	m_rmin=1;
-	return;
-      }
-
-    if (arg.at(0) == ')')
-      m_closed_r = false;
-  } // end of interval(std::string)
-
-
-  interval::interval(double a, double b)
-    : m_rmin(ePiX::min(a, b)), m_rmax(ePiX::max(a, b)),
-      m_closed_l(true), m_closed_r(true) { }
-
-  interval interval::literal(double a, double b)
-  {
-    interval value(a, a);
-    value.m_rmax = b;
-    return value;
-  }
-
-  interval interval::emptyset(literal(1,0));
-
-  double interval::min() const
-  {
-    return m_rmin;
-  }
-
-  double interval::max() const
-  {
-    return m_rmax;
-  }
-
-  double interval::avg() const
-  {
-    return 0.5*(m_rmin + m_rmax);
-  }
-
-
-  // Magic number
-  const double EPS(1.0e-10);
-
-  bool interval::contains(double x) const
-  {
-    // check bounds at each endpoint
-    return (    (m_closed_l ? (m_rmin - EPS <= x) : (m_rmin + EPS < x))
-	     && (m_closed_r ? (x <= m_rmax + EPS) : (x < m_rmax - EPS)) );
-  }
-
-  // Minkowski sum
-  interval& interval::operator +=(const interval& I)
-  {
-    if (is_empty())
-      ;
-
-    else if (I.is_empty())
-      *this = interval::emptyset;
-
-    else
-      {
-	m_rmin += I.m_rmin;
-	m_rmax += I.m_rmax;
-
-	// sum contains endpoint iff both arguments do
-	m_closed_l &= I.m_closed_l;
-	m_closed_r &= I.m_closed_r;
-      }
-
-      return *this;
-    }
-
-  // intersection
-  interval& interval::operator *=(const interval& I)
-  {
-    if (!is_empty())
-      {
-	m_rmin = ePiX::max(m_rmin, I.m_rmin);
-	m_rmax = ePiX::min(m_rmax, I.m_rmax);
-
-	m_closed_l &= I.m_closed_l;
-	m_closed_r &= I.m_closed_r;
-      }
-
-    return *this;
-  }
-
-  bool interval::operator== (const interval& I) const
-  {
-    if (is_empty())
-      return (I.is_empty()); // both empty?
-
-    else
-      return ((m_rmin == I.m_rmin) && (m_rmax == I.m_rmax)
-	      && (m_closed_l == I.m_closed_l) && (m_closed_r == I.m_closed_r));
-  }
-
-  bool interval::operator!= (const interval& I) const
-  {
-    return !(*this == I);
-  }
-
-  bool interval::is_empty() const
-  {
-    if (     (m_rmin <  m_rmax)
-	|| ( (m_rmin == m_rmax) && m_closed_l && m_closed_r ) )
-      return false;
-
-    else
-      return true;
-  }
-
-  // non-members
-  interval operator+ (interval I1, const interval& I2)
-  {
-    return I1 += I2;
-  }
-
-  interval operator* (interval I1, const interval& I2)
-  {
-    return I1 *= I2;
-  }
-
-} // end of namespace
diff --git a/graphics/epix/interval.h b/graphics/epix/interval.h
deleted file mode 100644
index 465262c4da..0000000000
--- a/graphics/epix/interval.h
+++ /dev/null
@@ -1,81 +0,0 @@
-/* 
- * interval.h -- ePiX::interval class and operations
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.0.25
- * Last Change: May 20, 2007
- *
- * 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- *
- *
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- * 
- * This file provides the interval class:
- *
- *     - Minkowski sum, intersection
- */
-
-#ifndef EPIX_INTERVAL
-#define EPIX_INTERVAL
-
-#include <string>
-
-namespace ePiX {
-
-  class interval {
-  public:
-    interval(std::string); // allow implicit conversion, must mangle argument
-    interval(double, double); // closed interval
-
-    static interval emptyset;
-
-    double min() const;
-    double max() const;
-    double avg() const;
-
-    bool contains(double) const;
-
-    // Minkowski sum
-    interval& operator +=(const interval&);
-
-    // intersection
-    interval& operator *=(const interval&);
-
-    bool operator== (const interval&) const;
-    bool operator!= (const interval&) const;
-    bool is_empty() const;
-
-  private:
-    double m_rmin, m_rmax;
-
-    bool m_closed_l, m_closed_r;
-
-    static interval literal(double a, double b); // can force b<a
-  }; // end of interval class
-
-  interval operator+ (interval I1, const interval& I2);
-  interval operator* (interval I1, const interval& I2);
-
-} // end of namespace
-
-#endif /* EPIX_INTERVAL */
diff --git a/graphics/epix/label_data.cc b/graphics/epix/label_data.cc
deleted file mode 100644
index 7f0e8b20f2..0000000000
--- a/graphics/epix/label_data.cc
+++ /dev/null
@@ -1,140 +0,0 @@
-/* 
- * label_data.cc -- ePiX::label_data class
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.21
- * Last Change: September 22, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include <sstream>
-
-#include "enums.h"
-
-#include "triples.h"
-#include "pairs.h"
-
-#include "label_data.h"
-#include "camera.h"
-#include "screen_data.h"
-#include "screen.h"
-
-#include "clipping.h"
-
-#include "paint_style.h"
-
-#include "active_screen.h"
-#include "glyph.h"
-
-namespace ePiX {
-
-  label_data::label_data(const P& here, const P& offset,
-			 const std::string& text, epix_mark_type mark)
-    : m_here(here), m_offset(offset.x1(), offset.x2()),
-      m_text(text), m_mark(mark), m_sizes(the_mark_size()),
-      m_style(the_label_style()), m_seen(!the_clip_box().clips(m_here))
-  {
-    // set axis tick color to line color; rotation ok if requested
-    if (m_mark == HTICK || m_mark == VTICK)
-      m_style.text_color(the_paint_style().line_color());
-  }
-
-    // generate label text from user-specified function of 2 or 3 variables
-  label_data::label_data(const P& here, const P& offset,
-			 std::string f(double,double), epix_mark_type mark)
-    : m_here(here), m_offset(offset.x1(), offset.x2()),
-      m_text(f(here.x1(), here.x2())),
-      m_mark(mark),  m_sizes(the_mark_size()), m_style(the_label_style()),
-      m_seen(!the_clip_box().clips(m_here))
-  {
-    if (m_mark == HTICK || m_mark == VTICK)
-      m_style.text_color(the_paint_style().line_color());
-  }
-
-  label_data::label_data(const P& here, const P& offset,
-			 std::string f(double,double,double),
-			 epix_mark_type mark)
-    : m_here(here), m_offset(offset.x1(), offset.x2()),
-      m_text(f(here.x1(), here.x2(), here.x3())),
-      m_mark(mark),  m_sizes(the_mark_size()), m_style(the_label_style()),
-      m_seen(!the_clip_box().clips(m_here))
-  {
-    if (m_mark == HTICK || m_mark == VTICK)
-      m_style.text_color(the_paint_style().line_color());
-  }
-
-  // markers subject to masking, border
-  // Only this constructor aligns TICK marks, prevents their rotation
-  label_data::label_data(const P& here, epix_mark_type mark, epix_label_posn A)
-    : m_here(here), m_offset(0, 0),
-      m_text(""), m_mark(mark),  m_sizes(the_mark_size()),
-      m_style(the_label_style()), m_seen(!the_clip_box().clips(m_here))
-  {
-    if (m_mark == HTICK || m_mark == VTICK)
-      {
-	m_style.text_color(the_paint_style().line_color());
-	m_style.label_angle(0); // no initial rotation
-
-	// prevent unseemly alignment; default is c, so needn't check
-	if (m_mark == HTICK && A == t || A == b)
-	  m_style.align_to(A);
-
-	else if (A == l || A == r)
-	  m_style.align_to(A);
-      }
-  }
-
-
-  label_data& label_data::text_color(const Color& col)
-  {
-    m_style.text_color(col);
-    return *this;
-  }
-
-  label_data& label_data::mask_color(const Color& col)
-  {
-    m_style.mask_color(col);
-    return *this;
-  }
-
-  label_data& label_data::align_to(epix_label_posn align)
-  {
-    m_style.align_to(align);
-    return *this;
-  }
-
-  // send colors through cam
-  void label_data::draw() const
-  {
-    if (m_seen)
-      (*active_screen()).m_screen->add_tile(glyph(cam()(m_here), m_offset,
-						  m_text, m_mark, m_sizes,
-						  m_style.seen_through(cam()),
-						  true));
-  }
-} // end of namespace
diff --git a/graphics/epix/label_data.h b/graphics/epix/label_data.h
deleted file mode 100644
index 53ccd0abe5..0000000000
--- a/graphics/epix/label_data.h
+++ /dev/null
@@ -1,97 +0,0 @@
-/* 
- * label_data.h -- ePiX::label_data class
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.18
- * Last Change: September 16, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-/*
- * label_data comprises spatial location, screen offsets, text (contents),
- * mark type, and a label_style (q.v.). label_data can be constructed from
- * string-valued functions of position; examples are given below.
- */
-
-#ifndef EPIX_LABEL
-#define EPIX_LABEL
-
-#include <string>
-
-#include "enums.h"
-#include "triples.h"
-
-#include "pairs.h"
-
-#include "marker_style.h"
-#include "label_style.h"
-
-namespace ePiX {
-
-  class Camera;
-  class Color;
-  class screen;
-
-  class label_data {
-  public:
-    label_data(const P& here, const P& offset,
-	       const std::string& text, epix_mark_type mark=TEXT);
-
-    // generate label text from user-specified function of 2 or 3 variables
-    label_data(const P& here, const P& offset,
-	       std::string f(double,double), epix_mark_type mark=TEXT);
-
-    label_data(const P& here, const P& offset,
-	       std::string f(double,double,double), epix_mark_type mark=TEXT);
-
-    // marker; alignment affects only TICK marks
-    label_data(const P& here, epix_mark_type mark, epix_label_posn align=c);
-
-    // pass through to m_style
-    label_data& text_color(const Color&);
-    label_data& mask_color(const Color&);
-    label_data& align_to(epix_label_posn);
-
-    void draw() const;
-
-  private:
-    P m_here;
-    pair m_offset;
-
-    std::string m_text;
-    epix_mark_type m_mark;
-
-    marker_sizes m_sizes;
-    label_state m_style;
-
-    bool m_seen;
-  }; // end of label_data class
-
-} // end of namespace
-
-#endif /* EPIX_LABEL */
diff --git a/graphics/epix/label_style.cc b/graphics/epix/label_style.cc
deleted file mode 100644
index ddd08f55ec..0000000000
--- a/graphics/epix/label_style.cc
+++ /dev/null
@@ -1,177 +0,0 @@
-/* 
- * label_style.cc -- ePiX's current state for text and markers
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.22
- * Last Change: September 24, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include <string>
-
-#include "enums.h"
-#include "constants.h"
-#include "functions.h" // for snip_to
-
-#include "angle_units.h"
-
-#include "Color.h"
-#include "camera.h"
-#include "length.h"
-
-#include "label_style.h"
-
-namespace ePiX {
-
-  // Users can only construct the default style, since label angles
-  // are specified in current units but stored/returned in degrees.
-  label_state::label_state()
-    : the_text_color(Black()), the_mask_color(Neutral()),
-      the_padding(length(0)), the_label_border(Xfine()),
-      the_alignment(none), the_fontsize("nsz"),
-      the_fontface("rm"),
-      the_angle(0) { }
-
-  // set
-  void label_state::text_color(const Color& col)
-  {
-    the_text_color = col;
-  }
-
-  void label_state::mask_color(const Color& col)
-  {
-    the_mask_color = col;
-  }
-
-  void label_state::label_padding(const length& len)
-  {
-    the_padding=len;
-  }
-
-  void label_state::label_border(const pen_data& p)
-  {
-    the_label_border = p;
-  }
-
-  void label_state::align_to(const epix_label_posn a)
-  {
-    the_alignment = a;
-  }
-
-  void label_state::fontsize(const std::string& fs)
-  {
-    the_fontsize = fs;
-  }
-
-  void label_state::fontface(const std::string& ff)
-  {
-    the_fontface = ff;
-  }
-
-  // store label rotation angle internally in degrees
-  void label_state::label_angle(double th)
-  {
-    the_angle = the_angle_style().to_degrees(th);
-  }
-
-  // get
-  Color label_state::text_color() const
-  {
-    return the_text_color;
-  }
-
-  Color label_state::mask_color() const
-  {
-    return the_mask_color;
-  }
-
-  bool label_state::is_masked() const
-  {
-    return !the_mask_color.is_unset();
-  }
-
-  length label_state::label_padding() const
-  {
-    return the_padding;
-  }
-
-  pen_data label_state::label_border() const
-  {
-    return the_label_border;
-  }
-
-  epix_label_posn label_state::align_to() const
-  {
-    return the_alignment;
-  }
-
-  // e.g. "scriptsize"
-  std::string label_state::fontsize() const
-  {
-    return the_fontsize;
-  }
-
-  std::string label_state::fontface() const
-  {
-    return the_fontface;
-  }
-
-  double label_state::label_angle() const
-  {
-    return the_angle;
-  }
-
-  // map us through a camera filter
-  label_state label_state::seen_through(const Camera& mycam) const
-  {
-    return label_state(mycam(the_text_color), mycam(the_mask_color),
-		       the_padding, the_label_border.seen_through(mycam),
-		       the_alignment, the_fontsize, the_fontface,
-		       the_angle);
-  }
-
-  // private constructor, for seen_through
-  label_state::label_state(const Color& text, const Color& mask,
-                           const length& pad, const pen_data& border,
-                           const epix_label_posn align,
-                           const std::string& fontsize,
-                           const std::string& fontface,
-                           double th)
-    : the_text_color(text), the_mask_color(mask),
-      the_padding(pad), the_label_border(border),
-      the_alignment(align), the_fontsize(fontsize),
-      the_fontface(fontface),
-      the_angle(th) { }
-
-
-  label_state& the_label_style()
-  {
-    static label_state* the_label_state(new label_state());
-    return *the_label_state;
-  }
-} // end of namespace
diff --git a/graphics/epix/label_style.h b/graphics/epix/label_style.h
deleted file mode 100644
index 3d3461281f..0000000000
--- a/graphics/epix/label_style.h
+++ /dev/null
@@ -1,136 +0,0 @@
-/* 
- * label_style.h -- ePiX's current state for text and markers
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.22
- * Last Change: September 24, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-/*
- * This file implements label_state:
- *
- *  [] Text and mask color (Color x2)
- *  [] Alignment (epix_label_posn)
- *  [] Font face and size (strings)
- *  [] Label angle (double, in degrees)
- *
- * The class in this file implements backend for user-level global
- * functions defined in state.h, which modify the_label_style().
- *
- * This header is not part of epix.h.
- */
-#ifndef EPIX_LABEL_STATE
-#define EPIX_LABEL_STATE
-
-#include <string>
-
-#include "enums.h"
-
-#include "Color.h"
-#include "length.h"
-
-#include "pen_data.h"
-
-namespace ePiX {
-
-  class Camera;
-
-  class label_state {
-  public:
-    // Clients can only construct the default state: black, unmasked,
-    // unbordered, basepoint-aligned, unrotated normalsize Roman text.
-    label_state();
-
-    // set
-    void text_color(const Color& col);
-    void mask_color(const Color& col);
-
-    void label_padding(const length& len);
-    void label_border(const pen_data& p);
-
-    void align_to(const epix_label_posn a);
-
-    void fontsize(const std::string& fs);
-    void fontface(const std::string& f);
-
-    // store label rotation angle internally in degrees
-    void label_angle(double th);
-
-    // get
-    Color text_color() const;
-    Color mask_color() const;
-
-    bool is_masked() const;
-
-    length  label_padding() const;
-    pen_data label_border() const;
-
-    epix_label_posn align_to() const;
-
-    // e.g. "scriptsize"
-    std::string fontsize() const;
-    std::string fontface() const;
-
-    // return angle in degrees
-    double label_angle() const;
-
-    // map us through a camera filter
-    label_state seen_through(const Camera& cam) const;
-
-  private:
-    Color the_text_color;
-    Color the_mask_color;
-
-    length the_padding;
-    pen_data the_label_border;
-
-    epix_label_posn the_alignment;
-
-    std::string the_fontsize;
-    std::string the_fontface;
-
-    double the_angle; // stored in degrees
-
-    // text and background color, padding, border style,
-    // alignment, font size and face, angle (degrees)
-    label_state(const Color& text,
-		const Color& mask,
-		const length& pad,
-		const pen_data& border,
-		const epix_label_posn align,
-		const std::string& fontsize,
-		const std::string& fontface,
-		double th);
-  }; // end of label_state
-
-  label_state& the_label_style();
-
-} // end of namespace
-
-#endif /* EPIX_LABEL_STATE */
diff --git a/graphics/epix/laps.1 b/graphics/epix/laps.1
deleted file mode 100644
index 4430a02037..0000000000
--- a/graphics/epix/laps.1
+++ /dev/null
@@ -1 +0,0 @@
-.so man1/epix.1
diff --git a/graphics/epix/laps.in b/graphics/epix/laps.in
deleted file mode 100644
index 8c8d8efe0f..0000000000
--- a/graphics/epix/laps.in
+++ /dev/null
@@ -1,259 +0,0 @@
-#! /bin/bash
-#
-# laps: latex to Postscript/PDF
-#
-# Options: --help for usage, --version for version and license
-#
-# Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
-# Andrew D. Hwang   <For address, do "laps -V">
-# 
-
-. "@pkglibdir@/epix-lib.sh"
-
-declare -a DVIPS_OPTS
-declare -a LAPS_FILE_LIST
-declare -i LAPS_FILE_COUNT
-
-PS2PDF="ps2pdf"
-LATEX="latex"
-LAPS_PDF=
-
-LATEX_INTERACT="batchmode"
-
-LAPS_EXTENSIONS="tex dtx ltx" # or NULL
-LAPS_DOT_EXT=".${LAPS_EXTENSIONS// /|.}" # for usage message
-LAPS_DEFAULT_EXT="tex"
-
-declare -a TMP_CMD
-
-
-function laps_help ()
-{
-cat <<"HELP"
-Options:
-    -h, --help
-      Show this message and exit
-
-    -V, --version, --gpl
-      Show version and license
-
-    -v, --verbose
-      Scroll output/error messages
-
-    -H, --huge
-      Use hugelatex (if available)
-
-    -i, -int, --interactive
-      Run (La)TeX interactively (implies --verbose)
-
-    -n, --no-config
-      Ignore $(HOME)/.dvipsrc
-
-    --pdf
-      Post-process ps file with ps2pdf
-
-    --pdf(la)tex
-      Use pdf(la)tex instead of latex.
-
-    -ps, --ps, --pslatex
-      Use pslatex instead of latex.
-
-    -P<printer>
-      dvips printer options, e.g. "-Pamz", may be given on the command 
-      line. They are also read from ~/.dvipsrc if this file exists.
-
-    -t, --tex
-      Use tex instead of latex
-
-HELP
-ePiX_bugreport
-
-} # End of laps_help
-
-
-function laps_parse_options {
-# Command-line options start with "-"
-while [ "$1" != "${1#-}" ]; do
-    case "$1" in
- 
-        -h|--help)
-	    ePiX_usage laps $LAPS_DOT_EXT
-	    laps_help
-	    exit 0
-	    ;;
-
-        -H|--huge)
-            if [ $(which hugelatex 2> /dev/null) ]; then
-                LATEX="hugelatex"
-            else
-                ePiX_warn "  hugelatex not available, ignoring \"$1\" option"
-            fi
-            shift
-            ;;
-
-        -i|-int|--interactive)
-            EPIX_STDOUT="$SYSTEM_STDOUT"
-            LATEX_INTERACT="scrollmode"
-            shift
-            ;;
-
-        -n|--no-config) # do not use ~/.dvipsrc
-            export DVIPSRC="$SYSTEM_DEVNULL"
-            shift
-            ;;
-
-        -pdf|--pdf)
-            LATEX="${LATEX##pdf}"
-            LAPS_PDF="yes"
-            shift
-            ;;
-
-        --pdflatex)
-            LATEX="pdflatex"
-            LAPS_PDF=""
-            shift
-            ;;
-
-        --pdftex)
-            LATEX="pdftex"
-            LAPS_PDF=""
-            shift
-            ;;
-
-        -ps|--ps|--pslatex)
-            LATEX="pslatex"
-            shift
-            ;;
-
-        -P)
-            DVIPS_OPTS=("${DVIPS_OPTS[@]}" "-P$2")
-            shift 2
-            ;;
-
-        -P*)
-            DVIPS_OPTS=("${DVIPS_OPTS[@]}" "$1")
-            shift
-            ;;
-
-        -t|--tex)
-            LATEX="tex"
-            shift
-            ;;
-
-        -V|--version|--gpl)
-            ePiX_version laps
-            ePiX_license
-            exit 0
-	    ;;
-
-        -v|--verbose)
-            if [ -z "$2" ]; then 
-                echo "Please use -V for version"
-                exit 0
-            fi
-            EPIX_STDOUT="$SYSTEM_STDOUT"
-            shift
-            ;;
-
-        -vv)
-            echo "Discontinued option -vv; please use -v for verbose output"
-            exit 0
-            ;;
-
-        *)
-            ePiX_warn "Ignoring unknown option \"$1\""
-            shift
-            ;;
-    esac
-done
-
-LAPS_FILE_LIST=("$@")
-} # End of laps_parse_options
-
-
-function laps_compile_files()
-{
-    if [ -z "$1" ]; then ePiX_die "No input file specified"; fi
-
-    # file counts
-    local processed=0
-    local success=0
-    local failure=0
-
-    for EPIX_INFILE in "${LAPS_FILE_LIST[@]}"; do
-
-        # sets EPIX_INROOT, EPIX_SUFFIX, EPIX_NOTFOUND, touches EPIX_LOGFILE
-        epix_parse_filename "$EPIX_INFILE" "$LAPS_EXTENSIONS"
-
-        let processed=processed+1
-
-        if [ "$EPIX_NOTFOUND" = "yes" ]; then
-            let failure=failure+1
-            continue
-        fi
-
-        TMP_CMD=($LATEX -interaction=$LATEX_INTERACT "$EPIX_INROOT.$EPIX_SUFFIX")
-        TEMPFILES=("{TEMPFILES[@]}" "${EPIX_INROOT}.dvi" "${EPIX_INROOT}.log")
-
-        # aux file out of date
-        if [ "$EPIX_INROOT.$EPIX_SUFFIX" -nt "$EPIX_INROOT.aux" ]; then
-            ePiX_msg "aux file out of date"
-
-            ePiX_command "${TMP_CMD[@]}"
-        fi
-
-        ePiX_command "${TMP_CMD[@]}"
-
-        if [ "${EPIX_INROOT}.$EPIX_SUFFIX" -nt "$EPIX_INROOT.dvi" ]; then
-            ePiX_warn "\"${TMP_CMD[*]}\" failed"
-            let failure=failure+1
-            continue
-        fi
-
-        if [ "$LATEX" = "latex" -o "$LATEX" = "tex" ]; then
-            TMP_CMD=(dvips "${DVIPS_OPTS[@]}" -f -o "$EPIX_INROOT.ps" "$EPIX_INROOT.dvi")
-
-            ePiX_command "${TMP_CMD[@]}"
-
-            if [ "$EPIX_INROOT.dvi" -nt "$EPIX_INROOT.ps" ]; then
-                ePiX_warn "${TMP_CMD[*]} failed"
-                let failure=failure+1
-                continue
-            fi
-        fi
-
-        if [ "$LAPS_PDF" = "yes" ]; then
-            TMP_CMD=($PS2PDF "$EPIX_INROOT.ps")
-
-            ePiX_command "${TMP_CMD[@]}"
-
-            if [ "$EPIX_INROOT.ps" -nt "$EPIX_INROOT.pdf" ]; then
-                ePiX_warn "${TMP_CMD[*]} failed"
-                let failure=failure+1
-                continue
-            fi
-        fi
-
-        let success=success+1
-        echo -e "\nTranscript written on $EPIX_LOGFILE" > "$EPIX_STDOUT"
-
-    done # for EPIX_INFILE in $LAPS_INFILE_LIST
-
-    if [ $processed -gt 1 ]; then
-        echo "$processed files processed: $success successfully, $failure failed" > "$EPIX_STDERR"
-    fi
-}
-
-### main ###
-
-if [ $# -eq 0 ]; then
-    ePiX_usage laps $LAPS_DOT_EXT
-    laps_help
-    exit 0
-fi
-
-laps_parse_options "$@"
-
-laps_compile_files "${LAPS_FILE_LIST[@]}"
-
-exit 0
diff --git a/graphics/epix/legend.cc b/graphics/epix/legend.cc
deleted file mode 100644
index 8f9b7c2054..0000000000
--- a/graphics/epix/legend.cc
+++ /dev/null
@@ -1,204 +0,0 @@
-/* 
- * legend.cc -- ePiX legend class
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.2.1
- * Last Change: September 28, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-// #include <cmath>
-#include <string>
-#include <sstream>
-#include <list>
-
-#include "constants.h"
-
-#include "triples.h"
-
-#include "Color.h"
-
-#include "length.h"
-
-#include "camera.h"
-
-#include "curves.h"
-
-#include "screen.h"
-#include "active_screen.h"
-#include "screen_data.h"
-
-#include "label_data.h"
-#include "markers.h"
-
-#include "legend_item.h"
-#include "legend_tile.h"
-#include "legend.h"
-
-namespace ePiX {
-
-  legend::legend()
-    : m_backing(White()),
-      m_bord(Black()), m_bord_width(PLAIN_WIDTH.magnitude()),
-      m_item_bord(Black()), m_item_bord_width(0.5*PLAIN_WIDTH.magnitude()),
-      m_key_size(12), m_label_skip(6) { }
-
-  legend::legend(const legend& L)
-    : m_backing(L.m_backing), m_bord(L.m_bord), m_bord_width(L.m_bord_width),
-      m_item_bord(L.m_item_bord), m_item_bord_width(L.m_item_bord_width),
-      m_key_size(L.m_key_size), m_label_skip(L.m_label_skip)
-  {
-    for (std::list<legend_item*>::const_iterator ip = L.m_items.begin();
-	 ip != L.m_items.end(); ++ip)
-      m_items.push_back((*ip)->clone());
-  }
-
-  legend& legend::operator=(const legend& L)
-  {
-    if (&L != this)
-      {
-	std::list<legend_item*> tmp;
-	for (std::list<legend_item*>::const_iterator ip = L.m_items.begin();
-	     ip != L.m_items.end(); ++ip)
-	  tmp.push_back((*ip)->clone());
-
-	m_backing = L.m_backing;
-	m_bord = L.m_bord;
-	m_bord_width = L.m_bord_width;
-
-	m_item_bord = L.m_item_bord;
-	m_item_bord_width = L.m_item_bord_width;
-
-	m_key_size = L.m_key_size;
-	m_label_skip = L.m_label_skip;
-
-	swap(m_items, tmp);
-      }
-
-    return *this;
-  }
-
-  legend::~legend()
-  {
-    for (std::list<legend_item*>::iterator ip = m_items.begin();
-	 ip != m_items.end(); ++ip)
-      delete *ip;
-  }
-
-  // add items
-  legend& legend::fill_item(const std::string& text)
-  {
-    m_items.push_back(new ePiX::fill_item(text));
-    return *this;
-  }
-
-  legend& legend::path_item(const std::string& text)
-  {
-    m_items.push_back(new ePiX::path_item(text));
-    return *this;
-  }
-
-  legend& legend::mark_item(epix_mark_type mark, const std::string& text)
-  {
-    m_items.push_back(new ePiX::mark_item(mark, text));
-    return *this;
-  }
-
-  // decorations
-  legend& legend::backing(const Color& col)
-  {
-    m_backing = col;
-    return *this;
-  }
-
-  legend& legend::border(const Color& col, double len)
-  {
-    m_bord = col;
-    m_bord_width = len;
-
-    return *this;
-  }
-
-  legend& legend::border(double len)
-  {
-    m_bord = Black();
-    m_bord_width = len;
-
-    return *this;
-  }
-
-  // item attributes
-  legend& legend::item_border(const Color& col, double len)
-  {
-    m_item_bord = col;
-    m_item_bord_width = len;
-
-    return *this;
-  }
-
-  legend& legend::item_border(double len)
-  {
-    m_item_bord = Black();
-    m_item_bord_width = len;
-
-    return *this;
-  }
-
-  legend& legend::key_size(double len)
-  {
-    m_key_size = len;
-    return *this;
-  }
-
-  legend& legend::label_skip(double len)
-  {
-    m_label_skip = len;
-    return *this;
-  }
-
-  void legend::draw(const P& loc, const P& off, epix_label_posn align) const
-  {
-    std::list<legend_item*>::const_iterator ip(m_items.begin());
-    if (ip == m_items.end())
-      return;
-
-    // else
-    label_state ls(the_label_style());
-    ls.mask_color(m_backing);
-    ls.label_border(pen_data(m_bord, length(m_bord_width)));
-    ls.align_to(align);
-
-    active_screen()->m_screen
-      ->add_tile(legend_tile(pair(loc.x1(), loc.x2()),
-			     pair(off.x1(), off.x2()),
-			     align,
-			     ls.seen_through(cam()),
-			     pen_data(cam()(m_item_bord),
-				      length(m_item_bord_width)),
-			     m_key_size, m_label_skip, m_items));
-  }
-} // end of namespace
diff --git a/graphics/epix/legend.h b/graphics/epix/legend.h
deleted file mode 100644
index ca7e096015..0000000000
--- a/graphics/epix/legend.h
+++ /dev/null
@@ -1,94 +0,0 @@
-/* 
- * legend.h -- Plot/figure legend class
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.11
- * Last Change: August 16, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#ifndef EPIX_LEGEND
-#define EPIX_LEGEND
-
-#include <string>
-
-#include "enums.h"
-
-#include "Color.h"
-
-namespace ePiX {
-
-  class legend_item;
-  class P;
-
-  class legend {
-  public:
-    legend();
-
-    legend(const legend&);
-
-    legend& operator=(const legend&);
-
-    ~legend();
-
-    // add items; get key style from drawing state
-    legend& fill_item(const std::string&); // solid color
-    legend& path_item(const std::string&); // line
-    legend& mark_item(epix_mark_type, const std::string&); // marker
-
-    // decorations
-    legend& backing(const Color&);
-    legend& border(const Color&, double);
-    legend& border(double); // line width in pt
-
-    // item attributes
-    legend& item_border(const Color&, double);
-    legend& item_border(double);
-
-    legend& label_skip(double); // 
-    legend& key_size(double);   // size of legend keys in pt
-
-    void draw(const P& loc, const P& offset=P(0,0),
-	      epix_label_posn align=tr) const;
-
-  private:
-    Color m_backing;
-    Color m_bord;
-    double m_bord_width;
-
-    Color m_item_bord;
-    double m_item_bord_width;
-
-    double m_key_size;
-    double m_label_skip;
-
-    std::list<legend_item*> m_items;
-  }; // end of legend class
-
-} // end of namespace
-
-#endif /* EPIX_LEGEND */
diff --git a/graphics/epix/legend_item.cc b/graphics/epix/legend_item.cc
deleted file mode 100644
index afbc5a8b65..0000000000
--- a/graphics/epix/legend_item.cc
+++ /dev/null
@@ -1,166 +0,0 @@
-/* 
- * legend_item.cc -- ePiX legend_item implementations
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.18
- * Last Change: September 16, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include <string>
-#include <sstream>
-
-#include "enums.h"
-#include "Color.h"
-#include "pen_data.h"
-
-#include "pairs.h"
-#include "edge_data.h"
-
-#include "camera.h"
-
-#include "format.h"
-
-#include "label_data.h"
-#include "markers.h"
-
-#include "paint_style.h"
-
-#include "screen_data.h"
-#include "glyph.h"
-#include "pen_line.h"
-
-#include "legend_item.h"
-
-namespace ePiX {
-
-  // Magic numbers
-  screen_data __epix_legend_key(double L)
-  {
-    return screen_data(pair(0, -0.075*L), pair(L, 0.925*L));
-  }
-
-  double legend_item::key_coord(double sz, const std::string& len) const
-  {
-    return sz*(length("1pt").to(len).magnitude());
-  }
-
-
-  // N.B. store raw fill color; "key" passes through camera
-  fill_item::fill_item(const std::string& text)
-    : m_fill(the_paint_style().fill_color()), m_text(text) { }
-
-  fill_item* fill_item::clone() const
-  {
-    return new fill_item(*this);
-  }
-
-  std::string fill_item::value() const
-  {
-    return m_text;
-  }
-
-  std::string fill_item::key(const format& fmt, double sz,
-			     const pen_data& bpen,
-			     const std::string& len) const
-  {
-    const double L(legend_item::key_coord(sz, len));
-
-    screen_data tmp(__epix_legend_key(L));
-
-    tmp.backing(m_fill).border(bpen.color(), bpen.width().name());
-
-    return tmp.print_to(fmt, len, true);
-  }
-
-
-  // N.B. Store pens passed through camera
-  path_item::path_item(const std::string& text)
-    : m_line(the_paint_style().line_pen().seen_through(cam())),
-      m_base(the_paint_style().base_pen().seen_through(cam())),
-      m_text(text) { }
-
-  path_item* path_item::clone() const
-  {
-    return new path_item(*this);
-  }
-
-  std::string path_item::value() const
-  {
-    return m_text;
-  }
-
-  std::string path_item::key(const format& fmt, double sz,
-			     const pen_data& bpen,
-			     const std::string& len) const
-  {
-    const double L(legend_item::key_coord(sz, len));
-
-    screen_data tmp(__epix_legend_key(L));
-    tmp.border(bpen.color(), bpen.width().name());
-
-    // draw a centered horizontal segment in the current line style
-    // Magic numbers
-    std::list<edge2d> edges;
-    edges.push_back(edge2d(tmp.l(), tmp.r(), true));
-
-    tmp.add_tile(pen_line(m_line, m_base, edges));
-    return tmp.print_to(fmt, len, true);
-  }
-
-
-  // key is a marker in the current style
-  mark_item::mark_item(epix_mark_type mark, const std::string& text)
-    :  m_mark(mark), m_style(the_label_style().seen_through(cam())),
-       m_sizes(the_mark_size()), m_text(text) { }
-
-  mark_item* mark_item::clone() const
-  {
-    return new mark_item(*this);
-  }
-
-  std::string mark_item::value() const
-  {
-    return m_text;
-  }
-
-  std::string mark_item::key(const format& fmt, double sz,
-			     const pen_data& bpen,
-			     const std::string& len) const
-  {
-    const double L(legend_item::key_coord(sz, len));
-
-    screen_data tmp(__epix_legend_key(L));
-    tmp.border(bpen.color(), bpen.width().name());
-
-    tmp.add_tile(glyph(tmp.c(), pair(0,0), "",
-		       m_mark, m_sizes, m_style, true));
-
-    return tmp.print_to(fmt, len, true); // encapsulate in a picture env.
-  }
-} // end of namespace
diff --git a/graphics/epix/legend_item.h b/graphics/epix/legend_item.h
deleted file mode 100644
index 6250245ba3..0000000000
--- a/graphics/epix/legend_item.h
+++ /dev/null
@@ -1,120 +0,0 @@
-/* 
- * legend_item.h -- ePiX legend_item base class and implementations
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.11
- * Last Change: August 17, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#ifndef EPIX_LEGEND_ITEM
-#define EPIX_LEGEND_ITEM
-
-#include <string>
-
-#include "enums.h"
-#include "Color.h"
-#include "pen_data.h"
-
-#include "label_data.h"
-#include "markers.h"
-
-namespace ePiX {
-
-  class format;
-
-  // used to represent legend items both in "space" and in the screen
-  class legend_item {
-  public:
-    virtual ~legend_item() { }
-    virtual legend_item* clone() const = 0;
-
-    virtual std::string value() const = 0;
-    virtual std::string key(const format& fmt, double sz,
-			    const pen_data& bpen,
-			    const std::string& len) const = 0;
-
-    double key_coord(double sz, const std::string& len) const;
-  }; // end of base class
-
-
-  // key is a solid filled square in current color
-  class fill_item : public legend_item {
-  public:
-    fill_item(const std::string& text);
-    fill_item* clone() const;
-
-    std::string value() const;
-    std::string key(const format&, double,
-		    const pen_data&,
-		    const std::string& len) const;
-
-  private:
-    Color m_fill;
-    std::string m_text;
-  }; // end of class fill_item
-
-
-  // key is a line segment in current line style
-  class path_item : public legend_item {
-  public:
-    path_item(const std::string& text);
-    path_item* clone() const;
-
-    std::string value() const;
-    std::string key(const format&, double sz, const pen_data&,
-		    const std::string& len) const;
-
-  private:
-    pen_data m_line;
-    pen_data m_base;
-
-    std::string m_text;
-  }; // end of class path_item
-
-
-  // key is a marker in the current style
-  class mark_item : public legend_item {
-  public:
-    mark_item(epix_mark_type mark, const std::string& text);
-    mark_item* clone() const;
-
-    std::string value() const;
-    std::string key(const format&, double sz, const pen_data&,
-		    const std::string& len) const;
-
-  private:
-    epix_mark_type m_mark;
-    label_state m_style;
-    marker_sizes m_sizes;
-
-    std::string m_text;
-  }; // end of class mark_item
-
-} // end of namespace
-
-#endif /* EPIX_LEGEND_ITEM */
diff --git a/graphics/epix/legend_tile.cc b/graphics/epix/legend_tile.cc
deleted file mode 100644
index 546cf802b0..0000000000
--- a/graphics/epix/legend_tile.cc
+++ /dev/null
@@ -1,173 +0,0 @@
-/* 
- * legend_tile.cc -- ePiX screen implemenation for legends
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.2.1
- * Last Change: September 28, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include <string>
-#include <sstream>
-#include <list>
-
-#include "enums.h"
-
-#include "length.h"
-
-#include "label_style.h"
-#include "pen_data.h"
-
-#include "functions.h"
-#include "pairs.h"
-#include "affine.h"
-#include "screen_mask.h"
-
-#include "picture.h"
-#include "picture_data.h"
-
-#include "format.h"
-
-#include "legend_item.h"
-#include "legend_tile.h"
-
-namespace ePiX {
-
-  // location, offsets, contents, mark type, visibility
-  legend_tile::legend_tile(const pair& here, const pair& offset,
-			   epix_label_posn align, const label_state& style,
-			   const pen_data& pen,
-			   double key_size, double skip,
-			   std::list<legend_item*> items)
-    : m_here(here), m_offset(offset), m_align(align), m_style(style),
-      m_item_border(pen), m_key_size(key_size), m_label_skip(skip)
-  {
-    for (std::list<legend_item*>::const_iterator li=items.begin();
-	 li != items.end(); ++li)
-      m_items.push_back((*li)->clone());
-  }
-
-  legend_tile::legend_tile(const legend_tile& L)
-    : m_here(L.m_here), m_offset(L.m_offset), m_align(L.m_align),
-      m_style(L.m_style), m_item_border(L.m_item_border),
-      m_key_size(L.m_key_size), m_label_skip(L.m_label_skip)
-  {
-    for (std::list<legend_item*>::const_iterator ip = L.m_items.begin();
-	 ip != L.m_items.end(); ++ip)
-      m_items.push_back((*ip)->clone());
-  }
-
-  legend_tile& legend_tile::operator=(const legend_tile& L)
-  {
-    if (&L != this)
-      {
-	std::list<legend_item*> tmp;
-	for (std::list<legend_item*>::const_iterator ip = L.m_items.begin();
-	     ip != L.m_items.end(); ++ip)
-	  tmp.push_back((*ip)->clone());
-
-	m_here = L.m_here;
-	m_offset = L.m_offset;
-
-	m_align = L.m_align;
-	m_style = L.m_style;
-
-	m_item_border = L.m_item_border;
-
-	m_key_size = L.m_key_size;
-	m_label_skip = L.m_label_skip;
-
-	swap(m_items, tmp);
-      }
-
-    return *this;
-  }
-
-  legend_tile::~legend_tile()
-  {
-    for (std::list<legend_item*>::iterator ip = m_items.begin();
-	 ip != m_items.end(); ++ip)
-      delete *ip;
-  }
-
-
-  legend_tile& legend_tile::map_by(const affine& f)
-  {
-    m_here = f(m_here);
-    return *this;
-  }
-
-  // legends unaffected by cropping
-  legend_tile& legend_tile::crop_to(const screen_mask& M)
-  {
-    /*
-    if (M.crops(m_here))
-      m_seen = false;
-    */
-    return *this;
-  }
-
-  legend_tile* legend_tile::clone() const
-  {
-    return new legend_tile(*this);
-  }
-
-  bool legend_tile::is_empty() const
-  {
-    return false;
-  }
-
-  std::string legend_tile::print_to(const format& fmt,
-				    const std::string& len) const
-  {
-    std::stringstream obuf, item_buf;
-
-    item_buf << "%" << std::endl << "\\begin{tabular}{l}%" << std::endl;
-
-    for (std::list<legend_item*>::const_iterator ip=m_items.begin();
-	 ip != m_items.end(); ++ip)
-      item_buf << (*ip)->key(fmt, m_key_size, m_item_border, len)
-	       << "\\hskip " << m_label_skip << "pt "
-	       << fmt.print_latex_hbox(m_style, (*ip)->value())
-	       << " \\\\" << std::endl;
-
-    item_buf << "\\end{tabular}%" << std::endl;
-
-    obuf << fmt.print_text(m_here, m_offset, item_buf.str(), m_style, len);
-
-    return obuf.str();
-  }
-
-  void legend_tile::add_to_pallet() const
-  {
-    the_picture().add_to_pallet(m_item_border.color())
-      .add_to_pallet(m_style.text_color())
-      .add_to_pallet(m_style.mask_color())
-      .add_to_pallet(m_style.label_border().color());
-  }
-} // end of namespace
diff --git a/graphics/epix/legend_tile.h b/graphics/epix/legend_tile.h
deleted file mode 100644
index 37c5f97440..0000000000
--- a/graphics/epix/legend_tile.h
+++ /dev/null
@@ -1,94 +0,0 @@
-/* 
- * legend_tile.h -- ePiX screen implemenation for legends
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX
- *
- * Version 1.2.1
- * Last Change: September 28, 2007
- *
- * 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- *
- *
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#ifndef EPIX_LEGEND_TILE
-#define EPIX_LEGEND_TILE
-#include <string>
-
-#include "enums.h"
-
-#include "pairs.h"
-#include "length.h"
-#include "Color.h"
-
-#include "label_style.h"
-#include "pen_data.h"
-
-#include "tile.h"
-
-namespace ePiX {
-
-  class format;
-  class legend_item;
-  class affine;
-  class screen_mask;
-
-  class legend_tile : public tile {
-  public:
-    legend_tile(const pair& here, const pair& offset,
-		epix_label_posn align, const label_state& style,
-		const pen_data& item_border, double key_size, double skip,
-		std::list<legend_item*> items);
-
-    legend_tile(const legend_tile&);
-    legend_tile& operator= (const legend_tile&);
-    ~legend_tile();
-
-    legend_tile& map_by(const affine&);
-    legend_tile& crop_to(const screen_mask&);
-
-    legend_tile* clone() const;
-
-    bool is_empty() const;
-
-    std::string print_to(const format&, const std::string&) const;
-    void add_to_pallet() const;
-
-  private:
-    pair m_here;
-    pair m_offset;
-
-    epix_label_posn m_align;
-
-    label_state m_style;
-
-    pen_data m_item_border;
-
-    double m_key_size;   // dims of key boxes in pt
-    double m_label_skip; // \hskip between box and item value
-
-    std::list<legend_item*> m_items;
-  }; // end of class legend_tile
-
-} // end of namespace
-
-#endif /* EPIX_LEGEND_TILE */
diff --git a/graphics/epix/length.cc b/graphics/epix/length.cc
deleted file mode 100644
index 431874ee92..0000000000
--- a/graphics/epix/length.cc
+++ /dev/null
@@ -1,277 +0,0 @@
-/*
- * length.cc -- the ePiX::length class
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.2.0-2
- * Last Change: September 26, 2007
- *
- * 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- *
- *
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include <cmath>
-#include <string>
-#include <sstream>
-
-#include "errors.h"
-#include "constants.h"
-#include "length.h"
-
-namespace ePiX {
-
-  // Inviolable "private" constants: number of pts per unit
-  const double IN(72.27);               // the gold standard
-  const double CM(28.452755905512);     // 2.54 cm = 72.27 pt
-  const double MM(2.8452755905512);     // 25.4 mm = 72.27 pt
-  const double PC(6.0225);              // 12 picas = 1 inch
-  const double BP(1.00375);             // 72 big pt = 72.27 pt
-  // const double SP(0.0000152587890625);  // 65536 scaled pt = 1 pt
-
-  // extract length from "double [spaces] length unit"
-  length::length(std::string arg)
-  {
-    char* tmp_units;
-    m_mag = strtod(arg.c_str(), &tmp_units);
-    std::string putative_units(tmp_units);
-      
-    // skip spaces, get first two non-space characters
-    std::string::size_type i=putative_units.find_first_not_of(" ");
-
-    if (i == std::string::npos)
-      {
-	epix_warning("Missing units, using pt");
-	m_units = "pt";
-      }
-    else
-      m_units = putative_units.substr(i, 2);
-
-    // See what we found; ugly, but not going to change...
-    if (m_units == "pt")
-      pts_per_unit = 1.0;
-
-    else if (m_units == "in")
-      pts_per_unit = IN;
-
-    else if (m_units == "cm")
-      pts_per_unit = CM;
-
-    else if (m_units == "mm")
-      pts_per_unit = MM;
-
-    else if (m_units == "pc")
-      pts_per_unit = PC;
-
-    else if (m_units == "bp")
-      pts_per_unit = BP;
-    /*
-    else if (m_units == "sp")
-      pts_per_unit = SP;
-    */
-    else
-      {
-	std::string warn="Unrecognized units \""+m_units+"\", assuming pt";
-        epix_warning(warn);
-	pts_per_unit = 1.0;
-	m_units = "pt";
-      }
-  } // end of string constructor
-
-  length::length(double lgth)
-    : m_mag(lgth), pts_per_unit(1.0), m_units("pt") { }
-
-  length& length::operator+= (const length& increment)
-  {
-    m_mag += increment.m_mag*increment.pts_per_unit/pts_per_unit;
-    return *this;
-  }
-
-  length& length::operator*= (double scale)
-  {
-    m_mag *= scale;
-    return *this;
-  }
-
-  // convert to specified units
-  length& length::to(std::string units)
-  {
-    units = units.substr(0,2);
-
-    if (m_units == units)
-      return *this; // null conversion
-
-    if (units == "pt")
-      {
-	m_mag *= pts_per_unit;
-	pts_per_unit = 1.0;
-	m_units = units;
-      }
-
-    else if (units == "in")
-      {
-	m_mag *= pts_per_unit/IN;
-	pts_per_unit = IN;
-	m_units = units;
-      }
-
-    else if (units == "cm")
-      {
-	m_mag *= pts_per_unit/CM;
-	pts_per_unit = CM;
-	m_units = units;
-      }
-
-    else if (units == "mm")
-      {
-	m_mag *= pts_per_unit/MM;
-	pts_per_unit = MM;
-	m_units = units;
-      }
-
-    else if (units == "pc")
-      {
-	m_mag *= pts_per_unit/PC;
-	pts_per_unit = PC;
-	m_units = units;
-      }
-
-    else if (units == "bp")
-      {
-	m_mag *= pts_per_unit/BP;
-	pts_per_unit = BP;
-	m_units = units;
-      }
-
-    /*
-    else if (units == "sp")
-      {
-	m_mag *= pts_per_unit/SP;
-	pts_per_unit = SP;
-	m_units = units;
-      }
-    */
-    else
-      epix_warning("Ignoring conversion to unrecognized units \""+units+"\"");
-
-    return *this;
-  }
-
-  bool length::operator== (const length& L) const
-  {
-    return (fabs(m_mag*pts_per_unit - L.m_mag*L.pts_per_unit) < EPIX_EPSILON);
-  }
-
-  double length::magnitude() const
-  {
-    return m_mag;
-  }
-
-  std::string length::units() const
-  {
-    return m_units;
-  }
-
-  std::string length::name() const
-  {
-    std::stringstream buf;
-    buf << m_mag << m_units;
-    return buf.str();
-  }
-
-
-  // value-returning operators
-  length operator+ (length len1, const length& len2)
-  {
-    return len1 += len2;
-  }
-
-  length operator* (double sc, length len)
-  {
-    return len *= sc;
-  }
-
-
-  bool operator< (length arg1, length arg2)
-  {
-    return (arg1.to("pt").magnitude()) < (arg2.to("pt").magnitude());
-  }
-
-  // Parse a string into two lengths.
-  void get_lengths(std::string sz, length& length1, length& length2)
-  {
-    std::string units1;
-    std::string units2;
-
-    double len1(0), len2(0);
-
-    // find first digit
-    std::string::size_type i=sz.find_first_of("-0123456789.");
-
-    if (i == std::string::npos)
-      epix_warning("Invalid width in size string");
-
-    else
-      {
-	sz.erase(0, i); // remove initial garbage
-	const char* tmp = sz.c_str();
-	char* arg;
-	len1 = strtod(tmp, &arg);
-	sz=arg;
-      }
-
-    // expect either unitlength or multiplication character
-    i=sz.find_first_not_of(" ");
-    std::string::size_type j=sz.find_first_of("Xx*");
-    if (i != j)
-      units1 = sz.substr(i, 2);
-
-    // next digit
-    i=sz.find_first_of("-0123456789.");
-
-    if (i == std::string::npos)
-      epix_warning("Invalid height in size string");
-
-    else
-      {
-	sz.erase(0, i);
-	const char* tmp = sz.c_str();
-	char* arg;
-	len2 = strtod(tmp, &arg);
-	sz=arg;
-	i=sz.find_first_not_of(" ");
-	units2 = sz.substr(i, 2);
-      }
-
-    if (units1 == "") // e.g. sz = "4x6in"
-      units1 = units2;
-
-    // assign values
-    std::stringstream buf1;
-    buf1 << len1 << units1;
-    length1=length(buf1.str());
-
-    std::stringstream buf2;
-    buf2 << len2 << units2;
-    length2=length(buf2.str());
-  }
-} // end of namespace
diff --git a/graphics/epix/length.h b/graphics/epix/length.h
deleted file mode 100644
index d44b86cffa..0000000000
--- a/graphics/epix/length.h
+++ /dev/null
@@ -1,110 +0,0 @@
-/*
- * length.h -- ePiX true and LaTeX length manipulation
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.2.0
- * Last Change: September 22, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-/*
- * This file provides the length class from ePiX2:
- *
- *   - length(std::string) assumes argument is "double [space(s)] unit"
- *     Recognized units are pt (points), in, cm, mm, pc (picas = 1/12 in), 
- *     bp (big points = 1/72 in)
- *
- *     Malformed strings are handled as follows:
- *     Missing doubles are assumed to be 0, units are assumed to be pt
- *
- *   - length(double) sets length to specified number of pt
- *
- *   - operator += Increments a length, returning answer in LHS units, e.g.
- *     1cm+=2in is 6.08cm
- *     2in+=1cm is 2.3937in
- *
- *   - operator *= scales a length by a double
- *   - to(string) converts a length to specified units
- *   - operator< compares true lengths
- *   - get_lengths(string, length, length) parses a string into ht and width
- *
- * A length can be negative.
- */
-
-#ifndef EPIX_LENGTH
-#define EPIX_LENGTH
-
-#include <string>
-
-namespace ePiX {
-
-  class length {
-  public:
-    length(std::string); // not const std::string&
-    explicit length(double = 0);
-
-    length& operator+= (const length&); // increment by another length
-    length& operator*= (double);  // scale
-    length& to(std::string);            // convert to specified units
-
-    // compare, with units conversion
-    bool operator== (const length&) const;
-    bool operator!= (const length& len) const { return !((*this) == len); }
-
-    // for output
-    double magnitude() const;
-    std::string units() const;
-    std::string name() const;
-
-  private:
-    double m_mag;
-    double pts_per_unit; // constants defined in length.cc
-    std::string m_units;
-  }; // end of class length
-
-  // value-returning operators
-  length operator+ (length, const length&);
-  length operator* (double, length len);
-
-  // Compare true size; must pass by value...
-  bool operator< (length arg1, length arg2);
-
-  /*
-   * Parse a string into two lengths (width and height).
-   *
-   * The "sz" argument is expected to look like "4in x 10cm" or "4 x 6 in",
-   * specifically a double, an optional two-letter unitlength, an "x", a
-   * double, and a two-letter unitlength (defaults to pt). Spaces are
-   * unimportant, as is initial or trailing garbage. Badly malformed input
-   * (e.g., "4,6 in") may confuse the parsing code on some platforms.
-   */
-  void get_lengths(std::string sz, length& length1, length& length2);
-
-} // end of namespace
-
-#endif /* EPIX_LENGTH */
diff --git a/graphics/epix/lens.cc b/graphics/epix/lens.cc
deleted file mode 100644
index cfca6df66b..0000000000
--- a/graphics/epix/lens.cc
+++ /dev/null
@@ -1,162 +0,0 @@
-/* 
- * lens.cc -- ePiX::lens functions
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.22
- * Last Change: September 24, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-// #include <cmath>
-
-#include "pairs.h"
-#include "triples.h"
-#include "frame.h"
-
-#include "lens.h"
-
-namespace ePiX {
-
-  Lens::~Lens() { }
-
-  pair Perspective::operator()
-    (const P& arg, const frame& orient, const P& viewpt,
-     double dist) const
-  {
-    P arg_vector(arg - viewpt);
-
-    // get arg's location in our coordinates
-    double u1(orient.sea()|arg_vector);
-    double u2(orient.sky()|arg_vector);
-    double u3(orient.eye()|arg_vector);
-
-    return (-dist/u3)*pair(u1, u2);
-  } // end of Camera::Perspective::operator()
-
-  bool Perspective::is_linear() const
-  {
-    return true;
-  }
-
-  bool Perspective::needs_clip() const
-  {
-    return true;
-  }
-
-  Perspective* Perspective::clone() const
-  {
-    return new Perspective(*this);
-  }
-
-
-  pair Orthog::operator()
-    (const P& arg, const frame& orient, const P& viewpt,
-     double dist) const
-  {
-    P arg_vector(arg - viewpt);
-    double u1(orient.sea()|arg_vector);
-    double u2(orient.sky()|arg_vector);
-
-    return pair(u1, u2);
-  } // end of Camera::Orthog::operator()
-
-  bool Orthog::is_linear() const
-  {
-    return true;
-  }
-
-  bool Orthog::needs_clip() const
-  {
-    return true;
-  }
-
-  Orthog* Orthog::clone() const
-  {
-    return new Orthog(*this);
-  }
-
-
-  pair Fisheye::operator()
-    (const P& arg, const frame& orient, const P& viewpt,
-     double dist) const
-  {
-    P arg_vector(arg - viewpt);
-    arg_vector *= 1.0/(norm(arg_vector));
-
-    double u1(orient.sea()|arg_vector);
-    double u2(orient.sky()|arg_vector);
-
-    // radial projection to camera sphere, then orthogonal projection
-    return dist*pair(u1, u2);
-  } // end of Camera::Fisheye::operator()
-
-  bool Fisheye::is_linear() const
-  {
-    return false;
-  }
-
-  bool Fisheye::needs_clip() const
-  {
-    return false;
-  }
-
-  Fisheye* Fisheye::clone() const
-  {
-    return new Fisheye(*this);
-  }
-
-
-  pair Bubble::operator()
-    (const P& arg, const frame& orient, const P& viewpt,
-     double dist) const
-  {
-    P arg_vector(arg - viewpt);
-    arg_vector *= 1.0/(norm(arg_vector));
-
-    double u1(orient.sea()|arg_vector);
-    double u2(orient.sky()|arg_vector);
-    double u3(orient.eye()|arg_vector);
-
-    // radial projection to camera sphere, then stereographic projection
-    return (2.0*dist/(1-u3))*pair(u1, u2);
-  } // end of Camera::Bubble::operator()
-
-  bool Bubble::is_linear() const
-  {
-    return false;
-  }
-
-  bool Bubble::needs_clip() const
-  {
-    return false;
-  }
-
-  Bubble* Bubble::clone() const
-  {
-    return new Bubble(*this);
-  }
-} // end of namespace
diff --git a/graphics/epix/lens.h b/graphics/epix/lens.h
deleted file mode 100644
index 99281a51cc..0000000000
--- a/graphics/epix/lens.h
+++ /dev/null
@@ -1,99 +0,0 @@
-/* 
- * lens.h -- ePiX::Lens interface ans implementations
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.21
- * Last Change: September 22, 2007
- *
- * 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- *
- *
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#ifndef EPIX_LENS
-#define EPIX_LENS
-
-namespace ePiX {
-
-  class frame;
-  class P;
-  class pair;
-
-  class Lens {
-  public:
-    // lens map(arg, orient, viewpt, distance)
-    virtual pair operator() (const P&,
-			     const frame&, const P&, double) const = 0;
-    virtual bool is_linear() const = 0; // lens preserves lines?
-    virtual bool needs_clip() const = 0; // lens needs scene pre-clipping?
-    virtual ~Lens();
-    virtual Lens* clone() const = 0;
-  }; // end of class Lens
-
-
-  // actual lenses
-  class Perspective : public Lens {
-  public:
-    pair operator()
-      (const P&, const frame&, const P&, double) const;
-
-    bool is_linear() const;
-    bool needs_clip() const;
-    Perspective* clone() const;
-  }; // end of class Perspective
-
-
-  class Orthog : public Lens {
-  public:
-    pair operator()
-      (const P&, const frame&, const P&, double) const;
-
-    bool is_linear() const;
-    bool needs_clip() const;
-    Orthog* clone() const;
-  }; // end of class Orthog
-
-
-  class Fisheye : public Lens {
-  public:
-    pair operator()
-      (const P&, const frame&, const P&, double) const;
-
-    bool is_linear() const;
-    bool needs_clip() const;
-    Fisheye* clone() const;
-  }; // end of class Fisheye
-
-
-  class Bubble : public Lens {
-  public:
-    pair operator()
-      (const P&, const frame&, const P&, double) const;
-
-    bool is_linear() const;
-    bool needs_clip() const;
-    Bubble* clone() const;
-  }; // end of class Bubble
-
-} // end of namespace
-
-#endif /* EPIX_LENS */
diff --git a/graphics/epix/make_header b/graphics/epix/make_header
deleted file mode 100644
index 0041b4a92e..0000000000
--- a/graphics/epix/make_header
+++ /dev/null
@@ -1,35 +0,0 @@
-#!/bin/bash
-#
-HEADER_FILE="epix.h"
-
-HEADERS="enums.h length.h interval.h triples.h functions.h pairs.h \
-     affine.h Color.h state.h frame.h domain.h camera.h screen.h picture.h \
-     markers.h axis.h legend.h path.h curves.h \
-     circle.h plane.h segment.h sphere.h intersections.h \
-     plots.h surface.h data_mask.h data_file.h data_bins.h geometry.h"
-
-# N.B. Spaces in 2nd line are properly adjusted
-cat <<HEADER_HEADER > $HEADER_FILE
-/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\\
- *  $HEADER_FILE -- Automatically created on $(date)  *
-\* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
-
-#include <iostream>
-#include <vector>
-#include <list>
-#include <set>
-#include <string>
-#include <sstream>
-#include <cmath>
-
-#ifndef EPIX_H
-#define EPIX_H
-
-HEADER_HEADER
-
-cat $HEADERS | grep -v "\#include" >> $HEADER_FILE
-
-echo >> $HEADER_FILE
-echo "#endif /* EPIX_H */" >> $HEADER_FILE
-
-exit 0;
diff --git a/graphics/epix/map.h b/graphics/epix/map.h
deleted file mode 100644
index c0c57a38be..0000000000
--- a/graphics/epix/map.h
+++ /dev/null
@@ -1,167 +0,0 @@
-/*
- * map.h -- classes of map for function plotting
- *
- * Andrew D. Hwang  <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- *
- * Version 1.1.5
- * Last Change: June 20, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-/*
- * This file provides classes that represent mappings R -> R^3 or R x R -> R^3,
- * both P-valued and assembled from double-valued components. Each class
- * provides an evaluation operator that takes 1, 2, or 3 doubles and returns
- * a P. Stubs for general coordinate systems are included.
- *
- *  - path_map:            R -> R^3
- *  - surface_map:     R x R -> R^3
- *  - space_map:   R x R x R -> R^3
- *
- *  - column_1var: assemble     R -> R^3 from components
- *  - column_2var: assemble R x R -> R^3 from components
- *
- * These classes are intended primarily for internal use, allowing the
- * plot algorithms to be templated. In new code, maps should be defined
- * as P-valued, rather than assembled from components; the "column" classes
- * are provided solely for backward compatibility.
- */
-
-#ifndef EPIX_MAP
-#define EPIX_MAP
-
-#include "triples.h"
-#include "functions.h"
-
-namespace ePiX {
-
-  // identity and coordinate projection functions
-  template<class T>T id(T arg) { return arg; }
-
-  template<class T1, class T2>T1 proj1(T1 arg1, T2 arg2) { return arg1; }
-  template<class T1, class T2>T2 proj2(T1 arg1, T2 arg2) { return arg2; }
-
-  // R -> R^3
-  class path_map {
-  private:
-    P (*y)(double);
-    P (*Y)(P);
-
-  public:
-    path_map(P f(double), P F(P) = id) : y(f), Y(F) { }
-
-    P operator() (const P& arg) const
-      {
-	return Y(y(arg.x1()));
-      }
-
-  }; // end of class path_map
-
-  // R x R -> R^3
-  class surface_map {
-  private:
-    P (*y)(double, double);
-    P (*Y)(P);
-
-  public:
-    surface_map(P f(double, double), P F(P) = id) : y(f), Y(F) { }
-    P operator() (const P& arg) const
-      {
-	return Y(y(arg.x1(), arg.x2()));
-      }
-
-  }; // end of class surface_map
-
-  // R x R x R -> R^3
-  class space_map {
-  private:
-    P (*y)(double, double, double);
-    P (*Y)(P);
-
-  public:
-    space_map(P f(double, double, double), P F(P) = id) : y(f), Y(F) { }
-    P operator() (const P& arg) const
-      {
-	return Y(y(arg.x1(), arg.x2(), arg.x3()));
-      }
-
-  }; // end of class space_map
-
-
-  // assemble R -> R^3 from components
-  class column_1var {
-  private:
-    double (*y1)(double);
-    double (*y2)(double);
-    double (*y3)(double);
-    P (*Y)(P);
-
-  public:
-    column_1var(double f1(double), double f2(double), double f3(double) = zero,
-		P F(P) = id) : y1(f1), y2(f2), y3(f3), Y(F) { }
-
-    // parameterized path from f:R -> R
-    column_1var(double f(double), P F(P) = id)
-      : y1(id), y2(f), y3(zero), Y(F) { }
-    P operator() (const P& arg) const
-      { 
-	double t = arg.x1();
-	return Y(P(y1(t), y2(t), y3(t))); 
-      }
-  }; // end of class column_1var
-
-  // assemble R x R -> R^3 from components
-  class column_2var {
-  private:
-    double (*y1)(double, double);
-    double (*y2)(double, double);
-    double (*y3)(double, double);
-    P (*Y)(P);
-
-  public:
-    column_2var(double f1(double, double), 
-		double f2(double, double), 
-		double f3(double, double),
-		P F(P) = id) : y1(f1), y2(f2), y3(f3), Y(F) { }
-
-    // omitted third component defaults to zero
-    column_2var(double f1(double, double), 
-		double f2(double, double), 
-		P F(P) = id) : y1(f1), y2(f2), y3(zero), Y(F) { }
-
-    // parameterized surface from f:R x R -> R
-    column_2var(double f(double, double), P F(P) = id)
-      : y1(proj1), y2(proj2), y3(f), Y(F) { }
-    P operator() (const P& arg) const
-      {
-	double u(arg.x1());
-	double v(arg.x2());
-	return Y(P(y1(u, v), y2(u, v), y3(u, v))); 
-      }
-  }; // end of class column_2var
-} // end of namespace
-
-#endif /* EPIX_MAP */
diff --git a/graphics/epix/marker_style.cc b/graphics/epix/marker_style.cc
deleted file mode 100644
index 7134a78ac9..0000000000
--- a/graphics/epix/marker_style.cc
+++ /dev/null
@@ -1,79 +0,0 @@
-/* 
- * marker_style.cc -- ePiX's dot size and tick length
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.9
- * Last Change: July 29, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#include "constants.h"
-
-#include "functions.h"
-#include "marker_style.h"
-
-namespace ePiX {
-
-  marker_sizes::marker_sizes()
-    : the_dotsize(AVG_DOT), the_ticksize(AVG_TICK) { }
-
-  marker_sizes& marker_sizes::dot_size(double diam)
-  {
-    if (0 < diam)
-      the_dotsize = snip_to(diam, MIN_DOT, MAX_DOT);
-    else
-      the_dotsize = AVG_DOT;
-
-    return *this;
-  }
-
-  marker_sizes& marker_sizes::tick_size(double len)
-  {
-    if (0 < len)
-      the_ticksize = snip_to(len, MIN_TICK, MAX_TICK);
-    else
-      the_ticksize = AVG_TICK;
-
-    return *this;
-  }
-
-  double marker_sizes::dot_size()  const
-  {
-    return the_dotsize;
-  }
-
-  double marker_sizes::tick_size()  const
-  {
-    return the_ticksize;
-  }
-
-  marker_sizes& the_mark_size()
-  {
-    static marker_sizes* the_mark_size(new marker_sizes());
-    return *the_mark_size;
-  }
-} // end of namespace
diff --git a/graphics/epix/marker_style.h b/graphics/epix/marker_style.h
deleted file mode 100644
index 48b03193de..0000000000
--- a/graphics/epix/marker_style.h
+++ /dev/null
@@ -1,59 +0,0 @@
-/* 
- * marker_style.h -- ePiX's dot size and tick mark length
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.19
- * Last Change: September 17, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#ifndef EPIX_MARKER_STYLE
-#define EPIX_MARKER_STYLE
-
-namespace ePiX {
-
-  class marker_sizes {
-  public:
-    marker_sizes();
-
-    marker_sizes& dot_size(double diam);
-    marker_sizes& tick_size(double len);
-
-    double  dot_size() const;
-    double tick_size() const;
-
-  private:
-    double the_dotsize;  // size of dots,  1  -- 36 pt
-    double the_ticksize; // (half-)size of tick marks, 1 -- 8 pt
-  };
-
-  marker_sizes& the_mark_size();
-
-} // end of namespace
-
-#endif /* EPIX_MARKER_STYLE */
diff --git a/graphics/epix/markers.cc b/graphics/epix/markers.cc
deleted file mode 100644
index ac418f8e1f..0000000000
--- a/graphics/epix/markers.cc
+++ /dev/null
@@ -1,308 +0,0 @@
-/* 
- * markers.cc -- ePiX axes, grids, markers, and labels
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.19
- * Last Change: September 17, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include "constants.h"
-
-#include "triples.h"
-#include "length.h"
-
-#include "functions.h"
-
-#include "path.h"
-#include "curves.h"
-#include "screen.h"
-#include "picture.h"
-
-#include "label_data.h"
-#include "markers.h"
-
-namespace ePiX {
-
-  static void __epix_label(const P& base, const P& offset,
-			   const std::string& lbl,
-			   epix_label_posn POSN, bool masked)
-  {
-    label_data val(base, offset, lbl);
-
-    if (masked)
-      {
-	// get mask color
-	Color my_mask(the_label_style().mask_color());
-
-	if (my_mask.is_unset())
-	  my_mask = White();
-
-	val.mask_color(my_mask);
-      }
-
-    else // !masked
-      val.mask_color(Neutral());
-
-    val.align_to(POSN).draw();
-  }
-
-  // label -- put POSN-aligned string <label_text> 
-  // at Cartesian position <base> translated by <offset> true points.
-  void label(const P& base, const P& offset, const std::string& lbl,
-	     epix_label_posn POSN)
-  {
-    __epix_label(base, offset, lbl, POSN, the_label_style().is_masked());
-  }
-
-  // mask color comes from global style, falls back to White()
-  void masklabel(const P& base, const P& offset, const std::string& lbl,
-		 epix_label_posn POSN)
-  {
-    __epix_label(base, offset, lbl, POSN, true);
-  }
-
-  void label(const P& base, const P& offset, const std::string& lbl)
-  {
-    __epix_label(base, offset, lbl, none, the_label_style().is_masked());
-  }
-
-  void masklabel(const P& base, const P& offset, const std::string& lbl)
-  {
-    __epix_label(base, offset, lbl, none, true);
-  }
-
-  // centered labels
-  void label(const P& base, const std::string& lbl)
-  {
-    __epix_label(base, P(0,0), lbl, c, the_label_style().is_masked());
-  }
-
-  void masklabel(const P& base, const std::string& lbl)
-  {
-    __epix_label(base, P(0,0), lbl, c, true);
-  }
-
-  // Marker aliases
-  void marker(const P& arg, epix_mark_type TYPE)
-  {
-    label_data(arg, TYPE).draw();
-  }
-
-  // Markers with labels
-  void circ(const P& posn, const P& offset, const std::string& label_text,
-	    epix_label_posn POSN)
-  {
-    if (label_text != "")
-      label(posn, offset, label_text, POSN);
-    label_data mk(posn, CIRC);
-    mk.draw();
-  }
-
-  void ring(const P& posn, const P& offset, const std::string& label_text,
-	    epix_label_posn POSN)
-  {
-    if (label_text != "")
-      label(posn, offset, label_text, POSN);
-    label_data mk(posn, RING);
-    mk.draw();
-  }
-
-  void spot(const P& posn, const P& offset, const std::string& label_text,
-	    epix_label_posn POSN)
-  {
-    if (label_text != "")
-      label(posn, offset, label_text, POSN);
-    label_data mk(posn, SPOT);
-    mk.draw();
-  }
-
-  void dot(const P& posn, const P& offset, const std::string& label_text,
-	   epix_label_posn POSN)
-  {
-    if (label_text != "")
-      label(posn, offset, label_text, POSN);
-    label_data mk(posn, DOT);
-    mk.draw();
-  }
-
-  void ddot(const P& posn, const P& offset, const std::string& label_text,
-	    epix_label_posn POSN)
-  {
-    if (label_text != "")
-      label(posn, offset, label_text, POSN);
-    label_data mk(posn, DDOT);
-    mk.draw();
-  }
-
-  void box(const P& posn, const P& offset, const std::string& label_text,
-	   epix_label_posn POSN)
-  {
-    if (label_text != "")
-      label(posn, offset, label_text, POSN);
-    label_data mk(posn, BOX);
-    mk.draw();
-  }
-
-  void bbox(const P& posn, const P& offset, const std::string& label_text,
-	    epix_label_posn POSN)
-  {
-    if (label_text != "")
-      label(posn, offset, label_text, POSN);
-    label_data mk(posn, BBOX);
-    mk.draw();
-  }
-
-  // Axis ticks (h_tick = tall, thin rectangle, for a *horizontal* axis)
-  void h_axis_tick(const P& arg, epix_label_posn POSN)
-  { 
-    label_data mk(arg, HTICK, POSN);
-    mk.draw();
-  }
-
-  void v_axis_tick(const P& arg, epix_label_posn POSN)
-  { 
-    label_data mk(arg, VTICK, POSN);
-    mk.draw();
-  }
-
-
-  //// Curve-like elements
-  // arrow with label
-  void arrow(const P& tail, const P& head, const P& offset,
-	     const std::string& label_text,
-	     epix_label_posn POSN, double scale)
-  {
-    arrow(tail, head, scale);
-    label(tail, offset, label_text, POSN);
-  }
-
-  // fixed-size elements
-  void right_angle(const P& loc, P leg1, P leg2, double scale)
-  {
-    const double norm1(norm(leg1));
-    const double norm2(norm(leg2));
-
-    if (norm1 < EPIX_EPSILON || norm2 < EPIX_EPSILON)
-      return;
-
-    //else
-    const double mult(pt_to_screen(scale));
-    leg1 *= mult/norm1;
-    leg2 *= mult/norm2;
-
-    path bd;
-    bd.pt(loc + leg1).pt(loc + leg1 + leg2).pt(loc + leg2);
-    bd.draw();
-  }
-
-  // the *acute* angle
-  void arc_measure(const P& loc, P leg1, P leg2, const P& offset,
-		   const std::string& text, epix_label_posn align,
-		   double scale)
-  {
-    const double norm1(norm(leg1));
-    const double norm2(norm(leg2));
-
-    if (norm1 < EPIX_EPSILON || norm2 < EPIX_EPSILON)
-      return;
-
-    //else normalize
-    leg1 *= 1.0/norm1;
-    leg2 *= 1.0/norm2;
-
-    // check for parllelity
-    P perp(leg1*leg2);
-    const double norm3(norm(perp));
-
-    if (norm3 < EPIX_EPSILON)
-      return;
-
-    // else get small angle
-    const double th(Acos(leg1|leg2));
-
-    perp *= 1.0/norm3;
-    leg1 *= pt_to_screen(scale);
-
-    perp *= leg1; // perp to leg1 in plane of legs
-
-    ellipse(loc, leg1, perp, 0, th);
-
-    if (text != "")
-      label(loc + Cos(0.5*th)*leg1 + Sin(0.5*th)*perp, offset,
-	    text, align);
-  }
-
-  void arc_measure(const P& loc, P leg1, P leg2, double scale)
-  {
-    arc_measure(loc, leg1, leg2, P(0,0), "", none, scale);
-  }
-
-  void axis_break(const P& tail, const P& head, double scale)
-  {
-    const P midpt(0.5*(head+tail));
-
-    P dir((head-tail)%E_3); // project to (x1,x2)-plane
-
-    if (norm(dir) < EPIX_EPSILON)
-      return;
-
-    // else
-    dir *= pt_to_screen(0.25*scale)/norm(dir); // zag is scale pt long
-
-    path bd;
-    bd.pt(tail).pt(midpt-2*dir).pt(midpt-dir+1.5*J(dir))
-      .pt(midpt+dir-1.5*J(dir)).pt(midpt+2*dir).pt(head);
-
-    bd.draw();
-  }
-
-  void h_error_bar(const P& loc, double err, epix_mark_type mk, double ht)
-  {
-    const P dy(0, pt_to_screen(0.5*ht));
-    const P bot(loc - P(err,0));
-    const P top(loc + P(err,0));
-
-    line(bot, top);
-    line(bot - dy, bot + dy);
-    line(top - dy, top + dy);
-    marker(loc, mk);
-  }
-
-  void v_error_bar(const P& loc, double err, epix_mark_type mk, double wd)
-  {
-    const P dx(pt_to_screen(0.5*wd), 0);
-    const P bot(loc - P(0,err));
-    const P top(loc + P(0,err));
-
-    line(bot, top);
-    line(bot - dx, bot + dx);
-    line(top - dx, top + dx);
-    marker(loc, mk);
-  }
-} // end of namespace
diff --git a/graphics/epix/markers.h b/graphics/epix/markers.h
deleted file mode 100644
index 92b80f3660..0000000000
--- a/graphics/epix/markers.h
+++ /dev/null
@@ -1,119 +0,0 @@
-/* 
- * markers.h -- ePiX markers and labels
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.16
- * Last Change: September 09, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-/*
- * label -- put string constant <label_text> at Cartesian position <base>
- * translated by (offset.x1, offset.x2) true points (i.e., 3rd component
- * of <offset> is discarded).
- *
- * Accepts an optional LaTeX-style positioning argument.
- * If no offset is specified, the label is centered at the given Cartesian
- * location.
- * masklabel requires the "color" package, and places the text in 
- * a white box that masks whatever is underneath and earlier in the file.
- */
-#ifndef EPIX_MARKERS
-#define EPIX_MARKERS
-
-#include <string>
-
-#include "enums.h"
-
-namespace ePiX {
-
-  class P;
-
-  // position, [offset], label text, [alignment]
-  void label(const P&, const P&, const std::string&);
-  void label(const P&, const std::string&);
-  void label(const P&, const P&, const std::string&, epix_label_posn);
-
-  void masklabel(const P&, const P&, const std::string&);
-  void masklabel(const P&, const std::string&);
-  void masklabel(const P&, const P&, const std::string&, epix_label_posn);
-
-
-  // Empty and filled LaTeX circles of diameter get_dotsize() true pt
-  void marker (const P&, epix_mark_type);
-
-  void circ(const P& posn, const P& offset=P(0,0),
-	    const std::string& label_text="",
-	    epix_label_posn align=none); // filled white circ
-
-  void ring(const P& posn, const P& offset=P(0,0),
-	    const std::string& label_text="",
-	    epix_label_posn align=none); // unfilled circ 
-
-  void spot(const P& posn, const P& offset=P(0,0),
-	    const std::string& label_text="",
-	    epix_label_posn align=none);
-
-  void dot(const P& posn, const P& offset=P(0,0),
-	   const std::string& label_text="",
-	   epix_label_posn align=none);
-
-  void ddot(const P& posn, const P& offset=P(0,0),
-	    const std::string& label_text="",
-	    epix_label_posn align=none);
-
-  void box(const P& posn, const P& offset=P(0,0),
-	   const std::string& label_text="",
-	   epix_label_posn align=none);
-
-  void bbox(const P& posn, const P& offset=P(0,0),
-	    const std::string& label_text="",
-	    epix_label_posn align=none);
-
-  void h_axis_tick(const P& location, epix_label_posn align=c);
-  void v_axis_tick(const P& location, epix_label_posn align=c);
-
-  // Arrow with aligned label at tail
-  void arrow(const P& tail, const P& head, const P& offset,
-	     const std::string& label_text,
-	     epix_label_posn align, double scale=1);
-
-  //// Path-like glyphs ////
-  // angle indicators; default args are true sizes in pt
-  void right_angle(const P& loc, P leg1, P leg2, double scale=8);
-  void arc_measure(const P& loc, P leg1, P leg2,
-		   const P& offset, const std::string&, epix_label_posn,
-		   double scale=8);
-  void arc_measure(const P& loc, P leg1, P leg2, double scale=8);
-
-  void axis_break(const P& tail, const P& head, double scale=12);
-  void h_error_bar(const P& loc, double err, epix_mark_type mk, double ht=6);
-  void v_error_bar(const P& loc, double err, epix_mark_type mk, double wd=6);
-} // end of namespace
-
-#endif /* EPIX_MARKERS */
diff --git a/graphics/epix/mask_diamond.cc b/graphics/epix/mask_diamond.cc
deleted file mode 100644
index da11f29b50..0000000000
--- a/graphics/epix/mask_diamond.cc
+++ /dev/null
@@ -1,129 +0,0 @@
-/* 
- * mask_diamond.cc -- ePiX diamond crop mask
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.10
- * Last Change: August 09, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#include <cmath>
-
-#include "functions.h"
-//#include "errors.h"
-
-#include "constants.h"
-
-#include "pairs.h"
-
-#include "Color.h"
-
-#include "paint_style.h"
-#include "length.h"
-
-#include "pen_line.h"
-#include "pen_fill.h"
-
-#include "edge_data.h"
-#include "screen_crop.h"
-
-#include "screen_mask.h"
-#include "mask_diamond.h"
-
-namespace ePiX {
-
-  mask_diamond::mask_diamond(const pair& arg1, const pair& arg2)
-    : m_hmin(min(arg1.x1(), arg2.x1())),
-      m_hmax(max(arg1.x1(), arg2.x1())),
-      m_vmin(min(arg1.x2(), arg2.x2())),
-      m_vmax(max(arg1.x2(), arg2.x2()))
-  {
-    m_border.push_back(edge2d(l(), b(), true));
-    m_border.push_back(edge2d(b(), r(), true));
-    m_border.push_back(edge2d(r(), t(), true));
-    m_border.push_back(edge2d(t(), l(), true));
-  }
-
-  mask_diamond* mask_diamond::clone() const
-  {
-    return new mask_diamond(*this);
-  }
-
-  // corners and midpoints
-  double mask_diamond::h_min() const { return m_hmin; }
-  double mask_diamond::v_min() const { return m_vmin; }
-
-  double mask_diamond::h_max() const { return m_hmax; }
-  double mask_diamond::v_max() const { return m_vmax; }
-
-  double mask_diamond::h_avg() const { return 0.5*(m_hmin+m_hmax); }
-  double mask_diamond::v_avg() const { return 0.5*(m_vmin+m_vmax); }
-
-  double mask_diamond::h_size() const { return m_hmax - m_hmin; }
-  double mask_diamond::v_size() const { return m_vmax - m_vmin; }
-
-  // diamond-specific functions
-  bool mask_diamond::crops(const pair& arg) const
-  {
-    const double x(fabs(arg.x1() - h_avg())/h_size());
-    const double y(fabs(arg.x2() - v_avg())/v_size());
-
-    return !((x + y) <= 0.5);
-  }
-
-  std::list<edge2d>& mask_diamond::crop_path(std::list<edge2d>& L) const
-  {
-    return crop_path_2nd(m_border, L);
-  }
-
-  std::list<edge2d>& mask_diamond::crop_loop(std::list<edge2d>& L) const
-  {
-    return crop_loop_2nd(m_border, L);
-  }
-
-  pen_line mask_diamond::border(const Color& col, const length& len) const
-  {
-    return pen_line(pen_data(col, len), Xfine(), m_border);
-  }
-
-  pen_fill mask_diamond::backing(const Color& col) const
-  {
-    return pen_fill(col, pen_data(col, PLAIN_WIDTH), 0, m_border);
-  }
-
-  pen_line mask_diamond::border() const
-  {
-    return pen_line(the_paint_style().line_pen(),
-		    the_paint_style().base_pen(), m_border);
-  }
-
-  pen_fill mask_diamond::backing() const
-  {
-    const Color& col(the_paint_style().fill_color());
-    return pen_fill(col, pen_data(col, PLAIN_WIDTH), 0, m_border);
-  }
-} // end of ePiX namespace
diff --git a/graphics/epix/mask_diamond.h b/graphics/epix/mask_diamond.h
deleted file mode 100644
index 8d4435f567..0000000000
--- a/graphics/epix/mask_diamond.h
+++ /dev/null
@@ -1,89 +0,0 @@
-/* 
- * mask_diamond.h -- ePiX:: rectangular screen_mask for cropping
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.15
- * Last Change: September 05, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#ifndef EPIX_MASK_DIAMOND
-#define EPIX_MASK_DIAMOND
-
-#include <list>
-#include <string>
-
-#include "edge_data.h"
-#include "screen_mask.h"
-
-namespace ePiX {
-
-  class pair;
-
-  class Color;
-
-  class length;
-  class pen_fill;
-  class pen_line;
-
-  class mask_diamond : public screen_mask {
-  public:
-    // mask_diamond() { }
-    mask_diamond(const pair& arg1, const pair& arg2);
-
-    mask_diamond* clone() const;
-    double h_min()  const;
-    double h_max()  const;
-    double h_size() const;
-    double h_avg()  const;
-
-    double v_min()  const;
-    double v_max()  const;
-    double v_size() const;
-    double v_avg()  const;
-
-    bool crops(const pair& arg) const; // false if arg visible
-    std::list<edge2d>& crop_path(std::list<edge2d>&) const;
-    std::list<edge2d>& crop_loop(std::list<edge2d>&) const;
-
-    pen_line  border(const Color&, const length&) const;
-    pen_fill backing(const Color&) const;
-
-    pen_line  border() const;
-    pen_fill backing() const;
-
-  private:
-    double m_hmin, m_hmax;
-    double m_vmin, m_vmax;
-
-    std::list<edge2d> m_border;
-  }; // end of class mask_diamond
-
-} // end of namespace
-
-#endif /* EPIX_MASK_DIAMOND */
diff --git a/graphics/epix/mask_ellipse.cc b/graphics/epix/mask_ellipse.cc
deleted file mode 100644
index 0eed28f94e..0000000000
--- a/graphics/epix/mask_ellipse.cc
+++ /dev/null
@@ -1,136 +0,0 @@
-/* 
- * mask_ellipse.cc -- ePiX ellipse crop mask
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.10
- * Last Change: August 09, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#include <cmath>
-
-#include "functions.h"
-//#include "errors.h"
-
-#include "constants.h"
-
-#include "pairs.h"
-
-#include "Color.h"
-
-#include "paint_style.h"
-#include "length.h"
-
-#include "pen_line.h"
-#include "pen_fill.h"
-
-#include "edge_data.h"
-#include "screen_crop.h"
-
-#include "screen_mask.h"
-#include "mask_ellipse.h"
-
-namespace ePiX {
-
-  mask_ellipse::mask_ellipse(const pair& arg1, const pair& arg2)
-    : m_hmin(min(arg1.x1(), arg2.x1())),
-      m_hmax(max(arg1.x1(), arg2.x1())),
-      m_vmin(min(arg1.x2(), arg2.x2())),
-      m_vmax(max(arg1.x2(), arg2.x2()))
-  {
-    const double dt(2*M_PI/EPIX_NUM_PTS);
-
-    const pair ctr(0.5*(m_hmin + m_hmax), 0.5*(m_vmin + m_vmax));
-
-    const double hsz(0.5*(m_hmax - m_hmin));
-    const double vsz(0.5*(m_vmax - m_vmin));
-
-    for (unsigned int i=0; i<EPIX_NUM_PTS; ++i)
-      m_border.push_back(edge2d(ctr + pair(hsz*std::cos(i*dt),
-					   vsz*std::sin(i*dt)),
-				ctr + pair(hsz*std::cos((i+1)*dt),
-					   vsz*std::sin((i+1)*dt)), true));
-  }
-
-  mask_ellipse* mask_ellipse::clone() const
-  {
-    return new mask_ellipse(*this);
-  }
-
-  // corners and midpoints
-  double mask_ellipse::h_min() const { return m_hmin; }
-  double mask_ellipse::v_min() const { return m_vmin; }
-
-  double mask_ellipse::h_max() const { return m_hmax; }
-  double mask_ellipse::v_max() const { return m_vmax; }
-
-  double mask_ellipse::h_avg() const { return 0.5*(m_hmin+m_hmax); }
-  double mask_ellipse::v_avg() const { return 0.5*(m_vmin+m_vmax); }
-
-  double mask_ellipse::h_size() const { return m_hmax - m_hmin; }
-  double mask_ellipse::v_size() const { return m_vmax - m_vmin; }
-
-  // ellipse-specific functions
-  bool mask_ellipse::crops(const pair& arg) const
-  {
-    const double dx((arg.x1() - h_avg())/h_size());
-    const double dy((arg.x2() - v_avg())/v_size());
-    return !(dx*dx + dy*dy <= 0.25);
-  }
-
-  std::list<edge2d>& mask_ellipse::crop_path(std::list<edge2d>& L) const
-  {
-    return crop_path_2nd(m_border, L);
-  }
-
-  std::list<edge2d>& mask_ellipse::crop_loop(std::list<edge2d>& L) const
-  {
-    return crop_loop_2nd(m_border, L);
-  }
-
-  pen_line mask_ellipse::border(const Color& col, const length& len) const
-  {
-    return pen_line(pen_data(col, len), Xfine(), m_border);
-  }
-
-  pen_fill mask_ellipse::backing(const Color& col) const
-  {
-    return pen_fill(col, pen_data(col, PLAIN_WIDTH), 0, m_border);
-  }
-
-  pen_line mask_ellipse::border() const
-  {
-    return pen_line(the_paint_style().line_pen(),
-		    the_paint_style().base_pen(), m_border);
-  }
-
-  pen_fill mask_ellipse::backing() const
-  {
-    const Color col(the_paint_style().fill_color());
-    return pen_fill(col, pen_data(col, PLAIN_WIDTH), 0, m_border);
-  }
-} // end of ePiX namespace
diff --git a/graphics/epix/mask_ellipse.h b/graphics/epix/mask_ellipse.h
deleted file mode 100644
index 09279ba0f6..0000000000
--- a/graphics/epix/mask_ellipse.h
+++ /dev/null
@@ -1,89 +0,0 @@
-/* 
- * mask_ellipse.h -- ePiX:: elliptical screen_mask for cropping
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.15
- * Last Change: September 05, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#ifndef EPIX_MASK_ELLIPSE
-#define EPIX_MASK_ELLIPSE
-
-#include <list>
-#include <string>
-
-#include "edge_data.h"
-#include "screen_mask.h"
-
-namespace ePiX {
-
-  class pair;
-
-  class Color;
-
-  class length;
-  class pen_fill;
-  class pen_line;
-
-  class mask_ellipse : public screen_mask {
-  public:
-    // mask_ellipse() { }
-    mask_ellipse(const pair& arg1, const pair& arg2);
-
-    mask_ellipse* clone() const;
-    double h_min()  const;
-    double h_max()  const;
-    double h_size() const;
-    double h_avg()  const;
-
-    double v_min()  const;
-    double v_max()  const;
-    double v_size() const;
-    double v_avg()  const;
-
-    bool crops(const pair& arg) const; // false if arg visible
-    std::list<edge2d>& crop_path(std::list<edge2d>&) const;
-    std::list<edge2d>& crop_loop(std::list<edge2d>&) const;
-
-    pen_line  border(const Color&, const length&) const;
-    pen_fill backing(const Color&) const;
-
-    pen_line  border() const;
-    pen_fill backing() const;
-
-  private:
-    double m_hmin, m_hmax;
-    double m_vmin, m_vmax;
-
-    std::list<edge2d> m_border;
-  }; // end of class mask_ellipse
-
-} // end of namespace
-
-#endif /* EPIX_MASK_ELLIPSE */
diff --git a/graphics/epix/mask_rectangle.cc b/graphics/epix/mask_rectangle.cc
deleted file mode 100644
index d54e934cee..0000000000
--- a/graphics/epix/mask_rectangle.cc
+++ /dev/null
@@ -1,129 +0,0 @@
-/* 
- * mask_rectangle.cc -- ePiX rectangle crop mask
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.10
- * Last Change: August 09, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#include <cmath>
-
-#include "functions.h"
-//#include "errors.h"
-
-#include "constants.h"
-
-#include "pairs.h"
-
-#include "Color.h"
-
-#include "paint_style.h"
-#include "length.h"
-
-#include "pen_line.h"
-#include "pen_fill.h"
-
-#include "edge_data.h"
-#include "screen_crop.h"
-
-#include "screen_mask.h"
-#include "mask_rectangle.h"
-
-namespace ePiX {
-
-  mask_rectangle::mask_rectangle(const pair& arg1, const pair& arg2)
-    : m_hmin(min(arg1.x1(), arg2.x1())),
-      m_hmax(max(arg1.x1(), arg2.x1())),
-      m_vmin(min(arg1.x2(), arg2.x2())),
-      m_vmax(max(arg1.x2(), arg2.x2()))
-  {
-    m_border.push_back(edge2d(br(), tr(), true));
-    m_border.push_back(edge2d(tr(), tl(), true));
-    m_border.push_back(edge2d(tl(), bl(), true));
-    m_border.push_back(edge2d(bl(), br(), true));
-  }
-
-  mask_rectangle* mask_rectangle::clone() const
-  {
-    return new mask_rectangle(*this);
-  }
-
-  // corners and midpoints
-  double mask_rectangle::h_min() const { return m_hmin; }
-  double mask_rectangle::v_min() const { return m_vmin; }
-
-  double mask_rectangle::h_max() const { return m_hmax; }
-  double mask_rectangle::v_max() const { return m_vmax; }
-
-  double mask_rectangle::h_avg() const { return 0.5*(m_hmin+m_hmax); }
-  double mask_rectangle::v_avg() const { return 0.5*(m_vmin+m_vmax); }
-
-  double mask_rectangle::h_size() const { return m_hmax - m_hmin; }
-  double mask_rectangle::v_size() const { return m_vmax - m_vmin; }
-
-  // rectangle-specific functions
-  bool mask_rectangle::crops(const pair& arg) const
-  {
-    const double x(arg.x1());
-    const double y(arg.x2());
-    return !(   (m_hmin <= x) && (x <= m_hmax)
-	     && (m_vmin <= y) && (y <= m_vmax));
-  }
-
-  std::list<edge2d>& mask_rectangle::crop_path(std::list<edge2d>& L) const
-  {
-    return crop_path_2nd(m_border, L);
-  }
-
-  std::list<edge2d>& mask_rectangle::crop_loop(std::list<edge2d>& L) const
-  {
-    return crop_loop_2nd(m_border, L);
-  }
-
-  pen_line mask_rectangle::border(const Color& col, const length& len) const
-  {
-    return pen_line(pen_data(col, len), Xfine(), m_border);
-  }
-
-  pen_fill mask_rectangle::backing(const Color& col) const
-  {
-    return pen_fill(col, pen_data(col, PLAIN_WIDTH), 0, m_border);
-  }
-
-  pen_line mask_rectangle::border() const
-  {
-    return pen_line(the_paint_style().line_pen(),
-		    the_paint_style().base_pen(), m_border);
-  }
-
-  pen_fill mask_rectangle::backing() const
-  {
-    const Color& col(the_paint_style().fill_color());
-    return pen_fill(col, pen_data(col, PLAIN_WIDTH), 0, m_border);
-  }
-} // end of ePiX namespace
diff --git a/graphics/epix/mask_rectangle.h b/graphics/epix/mask_rectangle.h
deleted file mode 100644
index 13d23e4f28..0000000000
--- a/graphics/epix/mask_rectangle.h
+++ /dev/null
@@ -1,89 +0,0 @@
-/* 
- * mask_rectangle.h -- ePiX:: rectangular screen_mask for cropping
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.15
- * Last Change: September 05, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#ifndef EPIX_MASK_RECTANGLE
-#define EPIX_MASK_RECTANGLE
-
-#include <list>
-#include <string>
-
-#include "edge_data.h"
-#include "screen_mask.h"
-
-namespace ePiX {
-
-  class pair;
-
-  class Color;
-
-  class length;
-  class pen_fill;
-  class pen_line;
-
-  class mask_rectangle : public screen_mask {
-  public:
-    // mask_rectangle() { }
-    mask_rectangle(const pair& arg1, const pair& arg2);
-
-    mask_rectangle* clone() const;
-    double h_min()  const;
-    double h_max()  const;
-    double h_size() const;
-    double h_avg()  const;
-
-    double v_min()  const;
-    double v_max()  const;
-    double v_size() const;
-    double v_avg()  const;
-
-    bool crops(const pair& arg) const; // false if arg visible
-    std::list<edge2d>& crop_path(std::list<edge2d>&) const;
-    std::list<edge2d>& crop_loop(std::list<edge2d>&) const;
-
-    pen_line  border(const Color&, const length&) const;
-    pen_fill backing(const Color&) const;
-
-    pen_line  border() const;
-    pen_fill backing() const;
-
-  private:
-    double m_hmin, m_hmax;
-    double m_vmin, m_vmax;
-
-    std::list<edge2d> m_border;
-  }; // end of class mask_rectangle
-
-} // end of namespace
-
-#endif /* EPIX_MASK_RECTANGLE */
diff --git a/graphics/epix/missing b/graphics/epix/missing
deleted file mode 100644
index 894e786e16..0000000000
--- a/graphics/epix/missing
+++ /dev/null
@@ -1,360 +0,0 @@
-#! /bin/sh
-# Common stub for a few missing GNU programs while installing.
-
-scriptversion=2005-06-08.21
-
-# Copyright (C) 1996, 1997, 1999, 2000, 2002, 2003, 2004, 2005
-#   Free Software Foundation, Inc.
-# Originally by Fran,cois Pinard <pinard@iro.umontreal.ca>, 1996.
-
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2, or (at your option)
-# any later version.
-
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
-# 02110-1301, USA.
-
-# As a special exception to the GNU General Public License, if you
-# distribute this file as part of a program that contains a
-# configuration script generated by Autoconf, you may include it under
-# the same distribution terms that you use for the rest of that program.
-
-if test $# -eq 0; then
-  echo 1>&2 "Try \`$0 --help' for more information"
-  exit 1
-fi
-
-run=:
-
-# In the cases where this matters, `missing' is being run in the
-# srcdir already.
-if test -f configure.ac; then
-  configure_ac=configure.ac
-else
-  configure_ac=configure.in
-fi
-
-msg="missing on your system"
-
-case "$1" in
---run)
-  # Try to run requested program, and just exit if it succeeds.
-  run=
-  shift
-  "$@" && exit 0
-  # Exit code 63 means version mismatch.  This often happens
-  # when the user try to use an ancient version of a tool on
-  # a file that requires a minimum version.  In this case we
-  # we should proceed has if the program had been absent, or
-  # if --run hadn't been passed.
-  if test $? = 63; then
-    run=:
-    msg="probably too old"
-  fi
-  ;;
-
-  -h|--h|--he|--hel|--help)
-    echo "\
-$0 [OPTION]... PROGRAM [ARGUMENT]...
-
-Handle \`PROGRAM [ARGUMENT]...' for when PROGRAM is missing, or return an
-error status if there is no known handling for PROGRAM.
-
-Options:
-  -h, --help      display this help and exit
-  -v, --version   output version information and exit
-  --run           try to run the given command, and emulate it if it fails
-
-Supported PROGRAM values:
-  aclocal      touch file \`aclocal.m4'
-  autoconf     touch file \`configure'
-  autoheader   touch file \`config.h.in'
-  automake     touch all \`Makefile.in' files
-  bison        create \`y.tab.[ch]', if possible, from existing .[ch]
-  flex         create \`lex.yy.c', if possible, from existing .c
-  help2man     touch the output file
-  lex          create \`lex.yy.c', if possible, from existing .c
-  makeinfo     touch the output file
-  tar          try tar, gnutar, gtar, then tar without non-portable flags
-  yacc         create \`y.tab.[ch]', if possible, from existing .[ch]
-
-Send bug reports to <bug-automake@gnu.org>."
-    exit $?
-    ;;
-
-  -v|--v|--ve|--ver|--vers|--versi|--versio|--version)
-    echo "missing $scriptversion (GNU Automake)"
-    exit $?
-    ;;
-
-  -*)
-    echo 1>&2 "$0: Unknown \`$1' option"
-    echo 1>&2 "Try \`$0 --help' for more information"
-    exit 1
-    ;;
-
-esac
-
-# Now exit if we have it, but it failed.  Also exit now if we
-# don't have it and --version was passed (most likely to detect
-# the program).
-case "$1" in
-  lex|yacc)
-    # Not GNU programs, they don't have --version.
-    ;;
-
-  tar)
-    if test -n "$run"; then
-       echo 1>&2 "ERROR: \`tar' requires --run"
-       exit 1
-    elif test "x$2" = "x--version" || test "x$2" = "x--help"; then
-       exit 1
-    fi
-    ;;
-
-  *)
-    if test -z "$run" && ($1 --version) > /dev/null 2>&1; then
-       # We have it, but it failed.
-       exit 1
-    elif test "x$2" = "x--version" || test "x$2" = "x--help"; then
-       # Could not run --version or --help.  This is probably someone
-       # running `$TOOL --version' or `$TOOL --help' to check whether
-       # $TOOL exists and not knowing $TOOL uses missing.
-       exit 1
-    fi
-    ;;
-esac
-
-# If it does not exist, or fails to run (possibly an outdated version),
-# try to emulate it.
-case "$1" in
-  aclocal*)
-    echo 1>&2 "\
-WARNING: \`$1' is $msg.  You should only need it if
-         you modified \`acinclude.m4' or \`${configure_ac}'.  You might want
-         to install the \`Automake' and \`Perl' packages.  Grab them from
-         any GNU archive site."
-    touch aclocal.m4
-    ;;
-
-  autoconf)
-    echo 1>&2 "\
-WARNING: \`$1' is $msg.  You should only need it if
-         you modified \`${configure_ac}'.  You might want to install the
-         \`Autoconf' and \`GNU m4' packages.  Grab them from any GNU
-         archive site."
-    touch configure
-    ;;
-
-  autoheader)
-    echo 1>&2 "\
-WARNING: \`$1' is $msg.  You should only need it if
-         you modified \`acconfig.h' or \`${configure_ac}'.  You might want
-         to install the \`Autoconf' and \`GNU m4' packages.  Grab them
-         from any GNU archive site."
-    files=`sed -n 's/^[ ]*A[CM]_CONFIG_HEADER(\([^)]*\)).*/\1/p' ${configure_ac}`
-    test -z "$files" && files="config.h"
-    touch_files=
-    for f in $files; do
-      case "$f" in
-      *:*) touch_files="$touch_files "`echo "$f" |
-				       sed -e 's/^[^:]*://' -e 's/:.*//'`;;
-      *) touch_files="$touch_files $f.in";;
-      esac
-    done
-    touch $touch_files
-    ;;
-
-  automake*)
-    echo 1>&2 "\
-WARNING: \`$1' is $msg.  You should only need it if
-         you modified \`Makefile.am', \`acinclude.m4' or \`${configure_ac}'.
-         You might want to install the \`Automake' and \`Perl' packages.
-         Grab them from any GNU archive site."
-    find . -type f -name Makefile.am -print |
-	   sed 's/\.am$/.in/' |
-	   while read f; do touch "$f"; done
-    ;;
-
-  autom4te)
-    echo 1>&2 "\
-WARNING: \`$1' is needed, but is $msg.
-         You might have modified some files without having the
-         proper tools for further handling them.
-         You can get \`$1' as part of \`Autoconf' from any GNU
-         archive site."
-
-    file=`echo "$*" | sed -n 's/.*--output[ =]*\([^ ]*\).*/\1/p'`
-    test -z "$file" && file=`echo "$*" | sed -n 's/.*-o[ ]*\([^ ]*\).*/\1/p'`
-    if test -f "$file"; then
-	touch $file
-    else
-	test -z "$file" || exec >$file
-	echo "#! /bin/sh"
-	echo "# Created by GNU Automake missing as a replacement of"
-	echo "#  $ $@"
-	echo "exit 0"
-	chmod +x $file
-	exit 1
-    fi
-    ;;
-
-  bison|yacc)
-    echo 1>&2 "\
-WARNING: \`$1' $msg.  You should only need it if
-         you modified a \`.y' file.  You may need the \`Bison' package
-         in order for those modifications to take effect.  You can get
-         \`Bison' from any GNU archive site."
-    rm -f y.tab.c y.tab.h
-    if [ $# -ne 1 ]; then
-        eval LASTARG="\${$#}"
-	case "$LASTARG" in
-	*.y)
-	    SRCFILE=`echo "$LASTARG" | sed 's/y$/c/'`
-	    if [ -f "$SRCFILE" ]; then
-	         cp "$SRCFILE" y.tab.c
-	    fi
-	    SRCFILE=`echo "$LASTARG" | sed 's/y$/h/'`
-	    if [ -f "$SRCFILE" ]; then
-	         cp "$SRCFILE" y.tab.h
-	    fi
-	  ;;
-	esac
-    fi
-    if [ ! -f y.tab.h ]; then
-	echo >y.tab.h
-    fi
-    if [ ! -f y.tab.c ]; then
-	echo 'main() { return 0; }' >y.tab.c
-    fi
-    ;;
-
-  lex|flex)
-    echo 1>&2 "\
-WARNING: \`$1' is $msg.  You should only need it if
-         you modified a \`.l' file.  You may need the \`Flex' package
-         in order for those modifications to take effect.  You can get
-         \`Flex' from any GNU archive site."
-    rm -f lex.yy.c
-    if [ $# -ne 1 ]; then
-        eval LASTARG="\${$#}"
-	case "$LASTARG" in
-	*.l)
-	    SRCFILE=`echo "$LASTARG" | sed 's/l$/c/'`
-	    if [ -f "$SRCFILE" ]; then
-	         cp "$SRCFILE" lex.yy.c
-	    fi
-	  ;;
-	esac
-    fi
-    if [ ! -f lex.yy.c ]; then
-	echo 'main() { return 0; }' >lex.yy.c
-    fi
-    ;;
-
-  help2man)
-    echo 1>&2 "\
-WARNING: \`$1' is $msg.  You should only need it if
-	 you modified a dependency of a manual page.  You may need the
-	 \`Help2man' package in order for those modifications to take
-	 effect.  You can get \`Help2man' from any GNU archive site."
-
-    file=`echo "$*" | sed -n 's/.*-o \([^ ]*\).*/\1/p'`
-    if test -z "$file"; then
-	file=`echo "$*" | sed -n 's/.*--output=\([^ ]*\).*/\1/p'`
-    fi
-    if [ -f "$file" ]; then
-	touch $file
-    else
-	test -z "$file" || exec >$file
-	echo ".ab help2man is required to generate this page"
-	exit 1
-    fi
-    ;;
-
-  makeinfo)
-    echo 1>&2 "\
-WARNING: \`$1' is $msg.  You should only need it if
-         you modified a \`.texi' or \`.texinfo' file, or any other file
-         indirectly affecting the aspect of the manual.  The spurious
-         call might also be the consequence of using a buggy \`make' (AIX,
-         DU, IRIX).  You might want to install the \`Texinfo' package or
-         the \`GNU make' package.  Grab either from any GNU archive site."
-    # The file to touch is that specified with -o ...
-    file=`echo "$*" | sed -n 's/.*-o \([^ ]*\).*/\1/p'`
-    if test -z "$file"; then
-      # ... or it is the one specified with @setfilename ...
-      infile=`echo "$*" | sed 's/.* \([^ ]*\) *$/\1/'`
-      file=`sed -n '/^@setfilename/ { s/.* \([^ ]*\) *$/\1/; p; q; }' $infile`
-      # ... or it is derived from the source name (dir/f.texi becomes f.info)
-      test -z "$file" && file=`echo "$infile" | sed 's,.*/,,;s,.[^.]*$,,'`.info
-    fi
-    # If the file does not exist, the user really needs makeinfo;
-    # let's fail without touching anything.
-    test -f $file || exit 1
-    touch $file
-    ;;
-
-  tar)
-    shift
-
-    # We have already tried tar in the generic part.
-    # Look for gnutar/gtar before invocation to avoid ugly error
-    # messages.
-    if (gnutar --version > /dev/null 2>&1); then
-       gnutar "$@" && exit 0
-    fi
-    if (gtar --version > /dev/null 2>&1); then
-       gtar "$@" && exit 0
-    fi
-    firstarg="$1"
-    if shift; then
-	case "$firstarg" in
-	*o*)
-	    firstarg=`echo "$firstarg" | sed s/o//`
-	    tar "$firstarg" "$@" && exit 0
-	    ;;
-	esac
-	case "$firstarg" in
-	*h*)
-	    firstarg=`echo "$firstarg" | sed s/h//`
-	    tar "$firstarg" "$@" && exit 0
-	    ;;
-	esac
-    fi
-
-    echo 1>&2 "\
-WARNING: I can't seem to be able to run \`tar' with the given arguments.
-         You may want to install GNU tar or Free paxutils, or check the
-         command line arguments."
-    exit 1
-    ;;
-
-  *)
-    echo 1>&2 "\
-WARNING: \`$1' is needed, and is $msg.
-         You might have modified some files without having the
-         proper tools for further handling them.  Check the \`README' file,
-         it often tells you about the needed prerequisites for installing
-         this package.  You may also peek at any GNU archive site, in case
-         some other package would contain this missing \`$1' program."
-    exit 1
-    ;;
-esac
-
-exit 0
-
-# Local variables:
-# eval: (add-hook 'write-file-hooks 'time-stamp)
-# time-stamp-start: "scriptversion="
-# time-stamp-format: "%:y-%02m-%02d.%02H"
-# time-stamp-end: "$"
-# End:
diff --git a/graphics/epix/mkinstalldirs b/graphics/epix/mkinstalldirs
deleted file mode 100644
index 259dbfcd35..0000000000
--- a/graphics/epix/mkinstalldirs
+++ /dev/null
@@ -1,158 +0,0 @@
-#! /bin/sh
-# mkinstalldirs --- make directory hierarchy
-
-scriptversion=2005-06-29.22
-
-# Original author: Noah Friedman <friedman@prep.ai.mit.edu>
-# Created: 1993-05-16
-# Public domain.
-#
-# This file is maintained in Automake, please report
-# bugs to <bug-automake@gnu.org> or send patches to
-# <automake-patches@gnu.org>.
-
-errstatus=0
-dirmode=
-
-usage="\
-Usage: mkinstalldirs [-h] [--help] [--version] [-m MODE] DIR ...
-
-Create each directory DIR (with mode MODE, if specified), including all
-leading file name components.
-
-Report bugs to <bug-automake@gnu.org>."
-
-# process command line arguments
-while test $# -gt 0 ; do
-  case $1 in
-    -h | --help | --h*)         # -h for help
-      echo "$usage"
-      exit $?
-      ;;
-    -m)                         # -m PERM arg
-      shift
-      test $# -eq 0 && { echo "$usage" 1>&2; exit 1; }
-      dirmode=$1
-      shift
-      ;;
-    --version)
-      echo "$0 $scriptversion"
-      exit $?
-      ;;
-    --)                         # stop option processing
-      shift
-      break
-      ;;
-    -*)                         # unknown option
-      echo "$usage" 1>&2
-      exit 1
-      ;;
-    *)                          # first non-opt arg
-      break
-      ;;
-  esac
-done
-
-for file
-do
-  if test -d "$file"; then
-    shift
-  else
-    break
-  fi
-done
-
-case $# in
-  0) exit 0 ;;
-esac
-
-# Solaris 8's mkdir -p isn't thread-safe.  If you mkdir -p a/b and
-# mkdir -p a/c at the same time, both will detect that a is missing,
-# one will create a, then the other will try to create a and die with
-# a "File exists" error.  This is a problem when calling mkinstalldirs
-# from a parallel make.  We use --version in the probe to restrict
-# ourselves to GNU mkdir, which is thread-safe.
-case $dirmode in
-  '')
-    if mkdir -p --version . >/dev/null 2>&1 && test ! -d ./--version; then
-      echo "mkdir -p -- $*"
-      exec mkdir -p -- "$@"
-    else
-      # On NextStep and OpenStep, the `mkdir' command does not
-      # recognize any option.  It will interpret all options as
-      # directories to create, and then abort because `.' already
-      # exists.
-      test -d ./-p && rmdir ./-p
-      test -d ./--version && rmdir ./--version
-    fi
-    ;;
-  *)
-    if mkdir -m "$dirmode" -p --version . >/dev/null 2>&1 &&
-       test ! -d ./--version; then
-      echo "mkdir -m $dirmode -p -- $*"
-      exec mkdir -m "$dirmode" -p -- "$@"
-    else
-      # Clean up after NextStep and OpenStep mkdir.
-      for d in ./-m ./-p ./--version "./$dirmode";
-      do
-        test -d $d && rmdir $d
-      done
-    fi
-    ;;
-esac
-
-for file
-do
-  case $file in
-    /*) pathcomp=/ ;;
-    *)  pathcomp= ;;
-  esac
-  oIFS=$IFS
-  IFS=/
-  set fnord $file
-  shift
-  IFS=$oIFS
-
-  for d
-  do
-    test "x$d" = x && continue
-
-    pathcomp=$pathcomp$d
-    case $pathcomp in
-      -*) pathcomp=./$pathcomp ;;
-    esac
-
-    if test ! -d "$pathcomp"; then
-      echo "mkdir $pathcomp"
-
-      mkdir "$pathcomp" || lasterr=$?
-
-      if test ! -d "$pathcomp"; then
-	errstatus=$lasterr
-      else
-	if test ! -z "$dirmode"; then
-	  echo "chmod $dirmode $pathcomp"
-	  lasterr=
-	  chmod "$dirmode" "$pathcomp" || lasterr=$?
-
-	  if test ! -z "$lasterr"; then
-	    errstatus=$lasterr
-	  fi
-	fi
-      fi
-    fi
-
-    pathcomp=$pathcomp/
-  done
-done
-
-exit $errstatus
-
-# Local Variables:
-# mode: shell-script
-# sh-indentation: 2
-# eval: (add-hook 'write-file-hooks 'time-stamp)
-# time-stamp-start: "scriptversion="
-# time-stamp-format: "%:y-%02m-%02d.%02H"
-# time-stamp-end: "$"
-# End:
diff --git a/graphics/epix/paint_style.cc b/graphics/epix/paint_style.cc
deleted file mode 100644
index 56ac9e7129..0000000000
--- a/graphics/epix/paint_style.cc
+++ /dev/null
@@ -1,145 +0,0 @@
-/* 
- * paint_style.cc -- ePiX's current line and fill style.
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.21
- * Last Change: September 22, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#include "camera.h"
-#include "length.h"
-#include "pen_data.h"
-#include "paint_style.h"
-
-namespace ePiX {
-
-  // Magic numbers: initialization constants
-  paint_state::paint_state() 
-    : m_line(pen_data()), m_base(Xfine()),
-      m_tint(Neutral()), m_filling(false) { }
-
-  paint_state* paint_state::clone() const
-  {
-    return new paint_state(*this);
-  }
-
-  // set
-  void paint_state::line_pen(const pen_data& pen)
-  {
-    m_line = pen;
-  }
-
-  void paint_state::line_color(const Color& col)
-  {
-    m_line.color(col);
-  }
-
-  void paint_state::line_width(const length& len)
-  {
-    m_line.width(len);
-  }
-
-  void paint_state::base_pen(const pen_data& pen)
-  {
-    m_base = pen;
-  }
-
-  void paint_state::base_color(const Color& col)
-  {
-    m_base.color(col);
-  }
-
-  void paint_state::base_width(const length& len)
-  {
-    m_base.width(len);
-  }
-
-  void paint_state::fill_color(const Color& col)
-  {
-    m_tint = col;
-  }
-
-  void paint_state::fill_flag(bool fill)
-  {
-    m_filling = fill;
-  }
-
-
-  // get
-  pen_data paint_state::line_pen() const
-  {
-    return m_line;
-  }
-  Color  paint_state::line_color() const
-  {
-    return m_line.color();
-  }
-  length paint_state::line_width() const
-  {
-    return m_line.width();
-  }
-
-  pen_data paint_state::base_pen() const
-  {
-    return m_base;
-  }
-  Color  paint_state::base_color() const
-  {
-    return m_base.color();
-  }
-  length paint_state::base_width() const
-  {
-    return m_base.width();
-  }
-
-  Color  paint_state::fill_color() const
-  {
-    return m_tint;
-  }
-  bool    paint_state::fill_flag() const
-  {
-    return m_filling;
-  }
-
-  paint_state paint_state::seen_through(const Camera& mycam) const
-  {
-    return paint_state(m_line.seen_through(mycam), m_base.seen_through(mycam),
-		       mycam(m_tint), m_filling);
-  }
-
-  paint_state::paint_state(const pen_data& lp, const pen_data& bp,
-			   const Color& fc, bool ff)
-    : m_line(lp), m_base(bp), m_tint(fc), m_filling(ff) { }
-
-
-  paint_state& the_paint_style()
-  {
-    static paint_state* the_paint_state(new paint_state());
-    return *the_paint_state;
-  }
-} // end of namespace
diff --git a/graphics/epix/paint_style.h b/graphics/epix/paint_style.h
deleted file mode 100644
index 95678f1706..0000000000
--- a/graphics/epix/paint_style.h
+++ /dev/null
@@ -1,103 +0,0 @@
-/* 
- * paint_style.h -- ePiX's current line and fill style.
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.3
- * Last Change: March 04, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-/*
- * This file implements ePiX's "paint" style:
- *
- *  [] Front pen, base pen (Color and width x2)
- *  [] Filling and fill color (bool, Color)
- *
- * The class in this file implements backend for user-level global
- * functions defined in state.h, which modify the_paint_style().
- *
- * This header is not part of epix.h.
- */
-#ifndef EPIX_PAINT_STYLE
-#define EPIX_PAINT_STYLE
-
-#include "Color.h"
-#include "pen_data.h"
-
-namespace ePiX {
-
-  class Camera;
-  class length;
-
-  class paint_state {
-  public:
-    paint_state();
-
-    paint_state* clone() const;
-
-    // set
-    void line_pen(const pen_data& pen);
-    void line_color(const Color& col);
-    void line_width(const length& len);
-
-    void base_pen(const pen_data& pen);
-    void base_color(const Color& col);
-    void base_width(const length& len);
-
-    void fill_color(const Color& col);
-    void fill_flag(bool fill);
-
-    // get
-    pen_data line_pen() const;
-    Color  line_color() const;
-    length line_width() const;
-
-    pen_data base_pen() const;
-    Color  base_color() const;
-    length base_width() const;
-
-    Color  fill_color() const;
-    bool    fill_flag() const;
-
-    paint_state seen_through(const Camera& cam) const;
-
-  private:
-    pen_data m_line;
-    pen_data m_base;
-
-    Color  m_tint;
-    bool   m_filling;
-
-    paint_state(const pen_data&, const pen_data&, const Color&, bool fill);
-  }; // end of class paint_state
-
-  paint_state& the_paint_style();
-
-} // end of namespace
-
-#endif /* EPIX_PAINT_STYLE */
diff --git a/graphics/epix/pairs.cc b/graphics/epix/pairs.cc
deleted file mode 100644
index a2cf174825..0000000000
--- a/graphics/epix/pairs.cc
+++ /dev/null
@@ -1,158 +0,0 @@
-/* 
- * pairs.cc -- ePiX pair:: class and mathematical operators
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.10
- * Last Change: August 04, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#include <cmath>
-
-#include "constants.h"
-#include "triples.h"
-#include "pairs.h"
-
-namespace ePiX {
-  pair::pair(const P& arg)
-  {
-    m_x1 = arg.x1();
-    m_x2 = arg.x2();
-  }
-
-  // unary increment operators
-  pair& pair::operator += (const pair& arg)
-  {
-    m_x1 += arg.m_x1;
-    m_x2 += arg.m_x2;
-
-    return *this;
-  }
-
-  pair& pair::operator -= (const pair& arg)
-  {
-    m_x1 -= arg.m_x1;
-    m_x2 -= arg.m_x2;
-  
-    return *this;
-  }
-
-  pair& pair::operator *= (double c)
-  {
-    m_x1 *= c;
-    m_x2 *= c;
-  
-    return *this;
-  }
-
-  // complex multiplication and division
-  pair& pair::operator *= (const pair& arg)
-  {
-    double temp(m_x1);
-    m_x1 = temp * arg.m_x1 - m_x2 * arg.m_x2;
-    m_x2 = temp * arg.m_x2 + m_x2 * arg.m_x1;
-  
-    return *this;
-  }
-
-  pair& pair::operator /= (const pair& arg)
-  {
-    double denom = (arg.m_x1)*(arg.m_x1)+(arg.m_x2)*(arg.m_x2);
-
-    double temp(m_x1);
-    m_x1 = (temp * arg.m_x1 + m_x2 * arg.m_x2)/denom;
-    m_x2 = (m_x2 * arg.m_x1 - temp * arg.m_x2)/denom;
-  
-    return *this;
-  }
-
-  bool pair::operator== (const pair& u) const
-  {
-    return (    fabs(m_x1-u.m_x1) < EPIX_EPSILON
-	     && fabs(m_x2-u.m_x2) < EPIX_EPSILON );
-  }
-
-  bool pair::operator!= (const pair& u) const
-  {
-    return !((*this) == u);
-  }
-
-  // non-member functions
-  pair operator- (pair u)
-  {
-    return u *= -1;
-  }
-
-  pair operator+ (pair u, const pair& v)
-  {
-    return u += v;
-  }
-
-  pair operator- (pair u, const pair& v)
-  {
-    return u -= v;
-  }
-
-  pair operator* (double c, pair u)
-  {
-    return u *= c;
-  }
-
-  // complex arithmetic
-  pair J(pair p)
-  {
-    return p *= pair(0,1);
-  }
-
-  pair operator* (pair u, const pair& v)
-  {
-    return u *= v;
-  }
-
-  pair operator/ (pair u, const pair& v)
-  {
-    return u /= v;
-  }
-
-  // dot product
-  double operator| (const pair& u, const pair& v)
-  {
-    return u.x1()*v.x1() + u.x2()*v.x2();
-  }
-
-  double norm (const pair& u)
-  {
-    return sqrt(u|u);
-  }
-
-  // componentwise product (a,b)&(x,y)=(ax,by)
-  pair operator& (const pair& u, const pair& v)
-  {
-    return pair(u.x1()*v.x1(), u.x2()*v.x2());
-  }
-
-} // end of namespace
diff --git a/graphics/epix/pairs.h b/graphics/epix/pairs.h
deleted file mode 100644
index cfbfd27c1a..0000000000
--- a/graphics/epix/pairs.h
+++ /dev/null
@@ -1,88 +0,0 @@
-/* 
- * pairs.h -- ePiX pair:: class and mathematical operators
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.10
- * Last Change: August 04, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#ifndef EPIX_PAIRS
-#define EPIX_PAIRS
-
-namespace ePiX {
-
-  class P;
-
-  class pair {
-  public:
-    pair(double arg1=0, double arg2=0)
-      : m_x1(arg1), m_x2(arg2) { }
-
-    pair(const P& arg); // take first two coordinates
-
-    double x1() const { return m_x1; }
-    double x2() const { return m_x2; }
-
-    // unary increment operators
-    pair& operator += (const pair& arg);
-    pair& operator -= (const pair& arg);
-    pair& operator *= (double c);
-
-    // complex multiplication and division
-    pair& operator *= (const pair& arg);
-    pair& operator /= (const pair& arg);
-    bool operator== (const pair& u) const;
-    bool operator!= (const pair& u) const;
-
-  private:
-    double m_x1;
-    double m_x2;
-
-  }; // end of class pair
-  
-  pair operator- (pair u);
-  pair operator+ (pair u, const pair& v);
-  pair operator- (pair u, const pair& v);
-  pair operator* (double c, pair u);
-
-  // complex arithmetic
-  pair J(pair p);
-  pair operator* (pair u, const pair& v);
-  pair operator/ (pair u, const pair& v);
-
-  // dot product
-  double operator| (const pair& u, const pair& v);
-  double norm (const pair& u);
-
-  // componentwise product (a,b)&(x,y)=(ax,by)
-  pair operator& (const pair& u, const pair& v);
-
-} // end of namespace
-
-#endif /* EPIX_PAIRS */
diff --git a/graphics/epix/path.cc b/graphics/epix/path.cc
deleted file mode 100644
index c786485670..0000000000
--- a/graphics/epix/path.cc
+++ /dev/null
@@ -1,329 +0,0 @@
-/* 
- * path.cc -- ePiX user class for polygons and paths
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.2.0-2
- * Last Change: September 25, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include <vector>
-#include <cmath>
-
-#include "errors.h"
-#include "triples.h"
-#include "constants.h"
-
-#include "functions.h"
-
-#include "Color.h"
-#include "pen_data.h"
-#include "state.h"
-
-#include "camera.h"
-#include "active_screen.h"
-
-#include "spline_data.h"
-#include "path_data.h"
-
-#include "path.h"
-
-namespace ePiX {
-
-  class screen;
-  class Sphere;
-
-  path::path(const path& C)
-    : m_segments(C.m_segments->clone()) { }
-
-  path& path::operator= (const path& C)
-  {
-    if (this != &C)
-      {
-	path_data*   tmp_segs(C.m_segments->clone());
-
-	delete m_segments;
-
-	m_segments=tmp_segs;
-      }
-
-    return *this;
-  }
-
-  path::~path()
-  {
-    delete m_segments;
-  }
-
-
-  path::path()
-    : m_segments(new path_data()) { }
-
-  path::path(const std::vector<P>& data, bool closed, bool filled)
-    : m_segments(new path_data(data, closed, filled)) { }
-
-
-  // path constructors *do not* close/fill; this must be done by client code
-
-  // lines, without and with specified number of points
-  path::path(const P& tail, const P& head, double expand)
-    : m_segments(new path_data())
-  {
-    double c(expm1(M_LN2*expand/100.0)); // 2^{expand/100} - 1
-    P dir(head - tail);
-
-    m_segments->pt(tail - (0.5*c)*dir);
-    m_segments->pt(head + (0.5*c)*dir);
-  } // end of line constructor
-
-
-  path::path(const P& tail, const P& head, 
-	     double expand, unsigned int num_pts)
-    : m_segments(new path_data())
-  {
-    if (num_pts < 1)
-      num_pts=1;
-
-    double c(expm1(M_LN2*expand/100.0)); // 2^{expand/100} - 1
-
-    // direction and starting location
-    P dir(head - tail);
-    P start(tail - (0.5*c)*dir);
-
-    dir *= ((1+c)/num_pts);
-
-    for (unsigned int i=0; i <= num_pts; ++i)
-      m_segments->pt(start+i*dir);
-
-  } // end of line constructor
-
-
-  // ellipse drawn with N edges
-  path::path(const P& center, const P& axis1, const P& axis2, 
-	     double t_min, double t_max,
-	     unsigned int N)
-    : m_segments(new path_data())
-  {
-    double T_MAX(t_max);
-    if (full_turn() < fabs(t_max-t_min))
-      {
-	epix_warning("Angle bounds in ellipse span more than one turn");
-	T_MAX = t_min + full_turn();
-      }
-
-    const unsigned int num_pts(1 < N ? N : 1);
-    const double dt((T_MAX - t_min)/num_pts);
-
-    for (unsigned int i=0; i <= num_pts; ++i)
-      {
-	double t(t_min + i*dt);
-	m_segments->pt(center + ((Cos(t)*axis1)+(Sin(t)*axis2)));
-      }
-  } // end of ellipse constructor
-
-  // ellipse with default number of points
-  path::path(const P& center, const P& axis1, const P& axis2, 
-	     double t_min, double t_max)
-    : m_segments(new path_data())
-  {
-    double frac(min(fabs(t_max-t_min)/full_turn(), 1));
-    unsigned int num_pts((unsigned int) max(2, ceil(frac*EPIX_NUM_PTS)));
-
-    const double dt((t_max - t_min)/num_pts);
-
-    for (unsigned int i=0; i <= num_pts; ++i)
-      {
-	double t(t_min + i*dt);
-	m_segments->pt(center + ((Cos(t)*axis1)+(Sin(t)*axis2)));
-      }
-  } // end of ellipse EPIX_NUM_PTS constructor
-
-
-  // Splines
-  path::path(const P& p1, const P& p2, const P& p3, unsigned int num_pts)
-    : m_segments(new path_data())
-  {
-    if (num_pts < 2)
-      num_pts=2; // draw at least V
-
-    const double dt(1.0/num_pts);
-
-    for (unsigned int i=0; i <= num_pts; ++i)
-      m_segments->pt(spl_pt(p1, p2, p3, i*dt));
-  }
-
-
-  path::path(const P& p1, const P& p2, const P& p3)
-    : m_segments(new path_data())
-  {
-    const double dt(1.0/EPIX_NUM_PTS);
-
-    for (unsigned int i=0; i <= EPIX_NUM_PTS; ++i)
-      m_segments->pt(spl_pt(p1, p2, p3, i*dt));
-  }
-
-
-  path::path(const P& p1, const P& p2, const P& p3, const P& p4,
-	     unsigned int num_pts)
-    : m_segments(new path_data())
-  {
-    if (num_pts < 3)
-      num_pts=3; // draw at least N
-
-    const double dt(1.0/num_pts);
-
-    for (unsigned int i=0; i <= num_pts; ++i)
-      m_segments->pt(spl_pt(p1, p2, p3, p4, i*dt));
-  }
-
-
-  path::path(const P& p1, const P& p2, const P& p3, const P& p4)
-    : m_segments(new path_data())
-  {
-    const double dt(1.0/EPIX_NUM_PTS);
-
-    for (unsigned int i=0; i <= EPIX_NUM_PTS; ++i)
-      m_segments->pt(spl_pt(p1, p2, p3, p4, i*dt));
-  }
-
-
-  // parametrized path
-  path::path(P f(double), double t_min, double t_max, unsigned int num_pts)
-    : m_segments(new path_data())
-  {
-    if (num_pts < 2)
-      num_pts = 2;
-
-    const double dt((t_max - t_min)/num_pts);
-
-    for (unsigned int i=0; i <= num_pts; ++i)
-      m_segments->pt(f(t_min + i*dt));
-  }
-
-  // with default number of points
-  path::path(P f(double), double t_min, double t_max)
-    : m_segments(new path_data())
-  {
-    const double dt((t_max - t_min)/EPIX_NUM_PTS);
-
-    for (unsigned int i=0; i <= EPIX_NUM_PTS; ++i)
-      m_segments->pt(f(t_min + i*dt));
-  }
-
-
-  // graphs
-  path::path(double f(double), double t_min, double t_max,
-	     unsigned int num_pts)
-    : m_segments(new path_data())
-  {
-    if (num_pts < 2)
-      num_pts = 2;
-
-    const double dt((t_max - t_min)/num_pts);
-
-    for (unsigned int i=0; i <= num_pts; ++i)
-      {
-	double t(t_min + i*dt);
-	m_segments->pt(P(t, f(t)));
-      }
-  }
-
-  path::path(double f(double), double t_min, double t_max)
-    : m_segments(new path_data())
-  {
-    const double dt((t_max - t_min)/EPIX_NUM_PTS);
-
-    for (unsigned int i=0; i <= EPIX_NUM_PTS; ++i)
-      {
-	double t(t_min + i*dt);
-	m_segments->pt(P(t, f(t)));
-      }
-  }
-
-
-  // append a point
-  path& path::pt(double x, double y, double z)
-  {
-    m_segments->pt(P(x, y, z));
-    return *this;
-  }
-
-  path& path::pt(const P& loc)
-  {
-    m_segments->pt(loc);
-    return *this;
-  }
-
-
-  // concatenate
-  path& path::operator+= (const path& data)
-  {
-    *m_segments += *(data.m_segments);
-
-    return *this;
-  }
-
-  path& path::operator-= (const path& data)
-  {
-    *m_segments -= *(data.m_segments);
-
-    return *this;
-  }
-
-  path& path::close()
-  {
-    m_segments->close();
-    return *this;
-  }
-  path& path::fill(const bool arg)
-  {
-    m_segments->fill(arg);
-    return *this;
-  }
-
-
-  void path::clip()
-  {
-    m_segments->clip();
-  }
-
-  void path::clip_to(const Sphere& S, const P& viewpt, bool back)
-  {
-    m_segments->clip_to(S, viewpt, back);
-  }
-
-  void path::draw() const
-  {
-    m_segments->draw();
-  }
-
-  void path::draw(const Color& col, const pen_data& pen) const
-  {
-    m_segments->photo(*active_screen(), cam(), col, pen, Xfine());
-  }
-} // end of namespace
diff --git a/graphics/epix/path.h b/graphics/epix/path.h
deleted file mode 100644
index 9816eed383..0000000000
--- a/graphics/epix/path.h
+++ /dev/null
@@ -1,135 +0,0 @@
-/* 
- * path.h -- ePiX user class for polygons and paths
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.3
- * Last Change: March 04, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#ifndef EPIX_PATHS
-#define EPIX_PATHS
-
-#include <vector>
-
-namespace ePiX {
-
-  class Camera;
-  class Color;
-  class P;
-  class path_data;
-  class pen_data;
-  class screen;
-  class Sphere;
-
-  class path {
-    friend class facet;
-  public:
-
-    // path was visible to users, but is now implemented as a p_impl.
-    path(const path&);
-    path& operator= (const path&);
-    ~path();
-
-    // Interface dictated by backward compatibility
-    path(const std::vector<P>& data, bool closed, bool filled);
-    path();
-
-    // line constructors
-    path(const P& tail, const P& head, double expand=0);
-    path(const P&, const P&, double expand, unsigned int num_pts);
-
-
-    // Constructors that specify the number of points have two prototypes
-    // rather than accepting a default argument. This hides the global
-    // (but user-inaccessible) default number of points (see constants.h).
-
-    // ellipse
-    path(const P& center, const P& axis1, const P& axis2, 
-	 double t_min, double t_max,
-	 unsigned int num_pts);
-
-    path(const P& center, const P& axis1, const P& axis2, 
-	 double t_min, double t_max);
-
-
-    // spline
-    path(const P& p1, const P& p2, const P& p3, unsigned int n);
-    path(const P& p1, const P& p2, const P& p3);
-
-    path(const P& p1, const P& p2, const P& p3, const P& p4, unsigned int n);
-    path(const P& p1, const P& p2, const P& p3, const P& p4);
-
-
-    // parametric path
-    path(P f(double), double t_min, double t_max, unsigned int num_pts);
-    path(P f(double), double t_min, double t_max);
-
-    // function graph
-    path(double f(double), double t_min, double t_max, unsigned int num_pts);
-    path(double f(double), double t_min, double t_max);
-
-    // append a point
-    path& pt(double, double, double=0);
-    path& pt(const P&);
-
-    // concatenate path segments
-    path& operator+= (const path&);
-    // concatenate, reversing second sequence
-    path& operator-= (const path&);
-
-    bool is_closed() const;
-    bool is_filled() const;
-
-    // set attributes
-    path& close();
-    path&  fill(const bool arg=true);
-
-
-    void clip();
-
-    // assumes path lies on sphere
-    void clip_to(const Sphere&, const P& viewpt, bool back=false);
-
-    void draw() const;
-    void draw(const Color&, const pen_data&) const;
-
-  private:
-    path_data*   m_segments;
-
-  }; // end of class path
-
-  /*
-    Slated for removal
-    // polygon/polyline with variable number of vertices
-    path polygon(unsigned int num_pts ...);
-    path polyline(unsigned int num_pts ...);
-  */
-
-} // end of namespace
-
-#endif /* EPIX_PATHS */
diff --git a/graphics/epix/path_data.cc b/graphics/epix/path_data.cc
deleted file mode 100644
index e4359ee030..0000000000
--- a/graphics/epix/path_data.cc
+++ /dev/null
@@ -1,280 +0,0 @@
-/* 
- * path_data.cc -- ePiX implementation classes for polygons and paths
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.21
- * Last Change: September 22, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include <list>
-#include <algorithm>
-
-#include "errors.h"
-#include "constants.h"
-
-#include "triples.h"
-#include "camera.h"
-#include "sphere.h"
-
-#include "edge_data.h"
-#include "active_screen.h"
-#include "clipping.h"
-
-#include "paint_style.h"
-
-#include "halfspace.h"
-#include "pen_line.h"
-#include "pen_fill.h"
-
-#include "screen_data.h"
-#include "screen.h"
-
-#include "path_data.h"
-
-namespace ePiX {
-
-  path_data::path_data() : m_closed(false), m_filled(false) { }
-
-  path_data::path_data(const std::vector<P>& pv, bool closed, bool filled)
-    : m_closed(closed), m_filled(closed && filled)
-  {
-    if (pv.size() == 1)
-      m_data.push_back(edge3d(pv.at(0), pv.at(0), true)); // will delete later
-
-    else
-      for (unsigned int i=0; i<pv.size()-1; ++i)
-	m_data.push_back(edge3d(pv.at(i), pv.at(i+1), true));
-  }
-
-  path_data::path_data(const std::list<edge3d>& data, bool closed, bool filled)
-    : m_closed(closed), m_filled(closed && filled), m_data(data) { }
-
-
-  path_data* path_data::clone() const
-  {
-    return new path_data(*this);
-  }
-
-
-  // join to arg; no effect if we're closed
-  path_data& path_data::pt(const P& arg)
-  {
-    if (0 < m_data.size())
-      {
-	const P hd((--m_data.end())->head()); // terminal point
-	m_data.push_back(edge3d(hd, arg, true));
-      }
-
-    else
-      m_data.push_back(edge3d(arg, arg, true));
-
-    return *this;
-  }
-
-
-  // concatenate path_data segments
-  path_data& path_data::operator+= (path_data pd)
-  {
-    if (!m_closed)
-      m_data.splice(m_data.end(), pd.m_data);
-
-    return *this;
-  }
-
-  // concatenate, reversing second sequence
-  path_data& path_data::operator-= (path_data pd)
-  {
-    if (!m_closed)
-      {
-	for (std::list<edge3d>::iterator ep=pd.m_data.begin();
-	     ep != pd.m_data.end(); ++ep)
-	  (*ep).reverse();   // swap tails and heads
-
-	pd.m_data.reverse(); // reverse list order
-	m_data.splice(m_data.end(), pd.m_data);
-      }
-
-    return *this;
-  }
-
-  bool path_data::is_closed() const
-  {
-    return m_closed;
-  }
-
-  bool path_data::is_filled() const
-  {
-    return m_filled;
-  }
-
-
-  // set flag and close up if necessary
-  path_data& path_data::close()
-  {
-    if (0 < m_data.size())
-      {
-	m_closed=true;
-
-	const P tail_pt((m_data.begin())->tail());
-	const P head_pt((--m_data.end())->head());
-
-	if (tail_pt != head_pt)
-	  m_data.push_back(edge3d(head_pt, tail_pt, true));
-      }
-
-    return *this;
-  }
-
-  // no action unless we're closed
-  path_data&  path_data::fill(const bool arg)
-  {
-    if (m_closed)
-      m_filled=arg;
-    return *this;
-  }
-
-
-  path_data& path_data::clip()
-  {
-    if (m_closed)
-      the_clip_box().clip_loop(m_data);
-
-    else
-      the_clip_box().clip_path(m_data);
-
-    return *this;
-  }
-
-  path_data& path_data::clip_to(const halfspace& knife)
-  {
-    if (m_closed)
-      knife.clip_loop(m_data);
-    else
-      knife.clip_path(m_data);
-    return *this;
-  }
-
-
-  path_data& path_data::clip_to(const Sphere& S, const P& viewpt,
-				bool back)
-  {
-    const double rad(S.radius());
-
-    P dir(S.center() - viewpt);
-    const double dist(norm(dir));
-
-    if (rad < dist) // viewpt is outside
-      {
-	dir *= 1/dist; // unit vector from center to viewpt
-	double x(rad*rad/dist);
-	
-	halfspace knife(S.center() - x*dir, dir);
-
-	if (back)
-	  knife.reverse();
-
-	clip_to(knife);
-      }
-
-    else
-      epix_warning("Can't clip path to sphere from interior viewpoint");
-
-    return *this;
-  }
-
-
-  void path_data::photo(screen& scr, const Camera& mycam, const Color& fill,
-			const pen_data& line, const pen_data& base) const
-  {
-    path_data tmp_data(*this);
-
-    tmp_data.clip(); // clip_box
-    if (mycam.needs_clip())
-      tmp_data.clip_to(mycam.clip_plane());
-
-    std::list<edge2d> edges;
-    unsigned int edge_ct(0); // don't print filled unless >= 3 non-null edges
-
-    for (std::list<edge3d>::const_iterator p=tmp_data.m_data.begin();
-	 p != tmp_data.m_data.end(); ++p)
-      {
-	edge2d tmp(mycam((*p).tail()), mycam((*p).head()), (*p).is_seen());
-
-	if (!tmp.is_null()) // endpoints not equal
-	  {
-	    ++edge_ct;
-	    edges.push_back(tmp);
-	  }
-      }
-
-    // draw fill bordered by base, then re-draw border with line/base pens
-    if (m_filled && 3 <= edge_ct)
-      {
-	scr.m_screen->add_tile(pen_fill(mycam(fill),
-					line.seen_through(mycam), edges));
-	if (line.width() < base.width())
-	  scr.m_screen->add_tile(pen_line(line.seen_through(mycam),
-					  base.seen_through(mycam), edges));
-      }
-
-    else if (1 <= edge_ct)
-      {
-	// print edges in groups
-	std::list<edge2d>::iterator p(edges.begin());
-	std::list<edge2d> path_buf;
-
-	int count(0);
-	while (p != edges.end())
-	  {
-	    path_buf.push_back(*p);
-	    p = edges.erase(p);
-
-	    if (++count == 250 || p == edges.end()) // Magic number
-	      {
-		scr.m_screen->add_tile(pen_line(line.seen_through(mycam),
-						base.seen_through(mycam),
-						path_buf));
-		path_buf.clear();
-		count = 0;
-	      }
-	  }
-      }
-  }
-
-  void path_data::draw() const
-  {
-    photo(*active_screen(), cam(), the_paint_style().fill_color(),
-	  the_paint_style().line_pen(), the_paint_style().base_pen());
-  }
-
-  void path_data::draw(const Color& col, const pen_data& pen) const
-  {
-    photo(*active_screen(), cam(), col, pen, Xfine());
-  }
-} // end of namespace
diff --git a/graphics/epix/path_data.h b/graphics/epix/path_data.h
deleted file mode 100644
index fa7803f976..0000000000
--- a/graphics/epix/path_data.h
+++ /dev/null
@@ -1,101 +0,0 @@
-/* 
- * path_data.h -- ePiX implementation classes for polygons and paths
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.18
- * Last Change: September 14, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#ifndef EPIX_PATH_DATA
-#define EPIX_PATH_DATA
-
-#include <list>
-#include <vector>
-
-#include "triples.h"
-#include "edge_data.h"
-
-namespace ePiX {
-
-  class Camera;
-  class Color;
-  class halfspace;
-  class pen_data;
-  class screen;
-  class Sphere;
-
-  // sequence of vertices
-  class path_data {
-  public:
-    path_data();
-    path_data(const std::vector<P>&, bool closed=false, bool filled=false);
-    path_data(const std::list<edge3d>&, bool closed=false, bool filled=false);
-
-    path_data* clone() const;
-
-    // add points
-    path_data& pt(const P&);
-
-    // concatenate path_data segments
-    path_data& operator+= (path_data);
-
-    // concatenate, reversing second sequence
-    path_data& operator-= (path_data);
-
-    bool is_closed() const;
-    bool is_filled() const;
-
-    // make loop and prevent subsequent additions of points
-    path_data& close();
-
-    // (un)set fill flag if closed
-    path_data&  fill(const bool arg=true);
-
-    path_data& clip();
-    path_data& clip_to(const halfspace&);
-
-    // assumes path already lies on sphere
-    path_data& clip_to(const Sphere&, const P& viewpt, bool back=false);
-
-    void photo(screen&, const Camera&, const Color& fill,
-	       const pen_data& line, const pen_data& base) const;
-
-    void draw() const;
-    void draw(const Color&, const pen_data&) const;
-
-  private:
-    bool m_closed;
-    bool m_filled;
-
-    std::list<edge3d> m_data;
-
-  }; // end of class path_data
-
-} // end of namespace
-
-#endif /* EPIX_PATH_DATA */
diff --git a/graphics/epix/path_style.cc b/graphics/epix/path_style.cc
deleted file mode 100644
index 43b93681a4..0000000000
--- a/graphics/epix/path_style.cc
+++ /dev/null
@@ -1,160 +0,0 @@
-/* 
- * path_style.cc -- ePiX's class for path styles.
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.18
- * Last Change: September 15, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#include <cmath>
-#include <string>
-#include <vector>
-
-#include "constants.h"
-
-#include "functions.h" // for snip_to
-#include "utils.h" // for get_chars
-#include "path_style.h"
-
-namespace ePiX {
-
-  // true if arg is a string of ch
-  static bool __epix_all_one_char(const std::string& arg, const char ch)
-  {
-    return arg.find_first_not_of(ch) == std::string::npos;
-  }
-
-  // convert string of dashes, spaces, and periods to a vector of breakpoints
-  static std::vector<double> __epix_get_breakpts(const std::string& pattern)
-  {
-    std::vector<double> value;
-
-    // Assume solid on anomalous input
-    if (pattern.size() == 0
-	|| __epix_all_one_char(pattern, '-')
-	|| __epix_all_one_char(pattern, ' '))
-      {
-	value.push_back(0);
-	value.push_back(1);
-
-	return value;
-      }
-
-    // else
-    const unsigned int sz(pattern.size()); // not zero
-    const double dt(1.0/sz);
-
-    for (unsigned int i=0; i<sz; ++i)
-      {
-	if (pattern.at(i) == '-')
-	  {
-	    // previous element was a dash; extend instead of adding breaks
-	    if (0 < value.size()
-		&& fabs(value.at(value.size()-1) - i*dt) < 0.25*dt)
-	      value.at(value.size()-1) = (i+1)*dt;
-
-	    else
-	      {
-		value.push_back(i*dt);
-		value.push_back((i+1)*dt);
-	      }
-	  }
-
-	else if (pattern.at(i) == '.')
-	  {
-	    value.push_back((i+0.5)*dt);
-	    value.push_back((i+0.5)*dt); // same value twice
-	  }
-	// spaces have no breakpoints, just increment i
-      }
-
-    return value;
-  } // end of __epix_get_breakpts
-
-
-  path_state::path_state()
-    : m_separation(AVG_SEP), m_natural_length(1), m_solid(true)
-  {
-    m_breakpoints.push_back(0);
-    m_breakpoints.push_back(1);
-  }
-
-  path_state::path_state(std::string arg)
-    : m_separation(AVG_SEP), m_solid(false)
-  {
-    // strip out everything but dash, space, period.
-    const std::string pattern(get_chars(arg, "- ."));
-    m_breakpoints = __epix_get_breakpts(pattern); // ok even if pattern=""
-
-    m_natural_length = pattern.size();
-
-    if (m_breakpoints.at(0) == 0 && m_breakpoints.at(1) == 1)
-      {
-	m_solid = true;
-	m_natural_length = 1;
-      }
-  }
-
-  path_state& path_state::separation(double len)
-  {
-    if (0 < len)
-      m_separation = snip_to(len, MIN_SEP, MAX_SEP);
-
-    else
-      m_separation = AVG_SEP;
-
-    return *this;
-  }
-
-  double path_state::separation() const
-  {
-    return m_separation;
-  }
-
-  unsigned int path_state::natural_length() const
-  {
-    return m_natural_length;
-  }
-
-  std::vector<double> path_state::breakpts() const
-  {
-    return m_breakpoints;
-  }
-
-  bool path_state::is_solid() const
-  {
-    return m_solid;
-  }
-
-
-  path_state& the_path_style()
-  {
-    static path_state* the_path_state(new path_state());
-    return *the_path_state;
-  }
-} // end of namespace
diff --git a/graphics/epix/path_style.h b/graphics/epix/path_style.h
deleted file mode 100644
index 988847660e..0000000000
--- a/graphics/epix/path_style.h
+++ /dev/null
@@ -1,83 +0,0 @@
-/* 
- * path_style.h -- ePiX's class for solid/dashed/dotted paths
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.7
- * Last Change: July 13, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-/*
- * This file implements ePiX's styles for dashed and dotted paths. The
- * data are a string containing dashes (-), spaces ( ), and dots (.),
- * each of which represents a fixed portion of a path segment, e.g.
- *
- * Solid:  "-"
- * Dashed: "-  -"
- * Dotted: " . "
- * Custom: "- . -- . -", etc.
- *
- * The class in this file implements backend for user-level global
- * functions defined in state.h.
- *
- * This header is not part of epix.h.
- */
-#ifndef EPIX_PATH_STYLE
-#define EPIX_PATH_STYLE
-
-#include <string>
-#include <vector>
-
-namespace ePiX {
-
-  class path_state {
-  public:
-    path_state();
-    path_state(std::string);
-
-    path_state& separation(double len); // dist in pt between adjacent elements
-
-    double separation() const;
-    unsigned int natural_length() const;
-    std::vector<double> breakpts() const;
-
-    bool is_solid() const;
-
-  private:
-    double m_separation;    // true length of pattern
-    std::vector<double> m_breakpoints; // subdivision of [0,1]
-
-    unsigned int m_natural_length; // number of chars in defining string
-    bool m_solid;
-  }; // end of class path_state
-
-  path_state& the_path_style();
-
-} // end of namespace
-
-#endif /* EPIX_PATH_STYLE */
diff --git a/graphics/epix/pen_arrow.cc b/graphics/epix/pen_arrow.cc
deleted file mode 100644
index e39dbd906c..0000000000
--- a/graphics/epix/pen_arrow.cc
+++ /dev/null
@@ -1,190 +0,0 @@
-/* 
- * pen_arrow.cc -- ePiX::pen_arrow class
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX
- *
- * Version 1.2.0-2
- * Last Change: September 26, 2007
- *
- * 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include <sstream>
-#include <list> // for arrow shaft cropping
-
-#include "pairs.h"
-#include "affine.h"
-#include "screen_mask.h"
-
-#include "length.h"
-
-#include "edge_data.h"
-
-#include "Color.h"
-#include "arrow_style.h"
-#include "label_style.h"
-#include "marker_style.h" // for bbox marker
-
-#include "format.h"
-#include "picture_data.h"
-#include "picture.h"
-
-#include "tile.h"
-#include "pen_arrow.h"
-
-namespace ePiX {
-  pen_arrow::pen_arrow(const pair& tail, const pair& head,
-		       const pen_data& line, const pen_data& base,
-		       double scale, double sin_th, bool head_seen)
-    : m_shaft(tail, head, true), m_line(line), m_base(base),
-      m_scale(scale), m_shorten(sin_th), m_head_seen(head_seen),
-      m_style(the_arrowhead_style())  { }
-
-  pen_arrow* pen_arrow::clone() const
-  {
-    return new pen_arrow(*this);
-  }
-
-  pen_arrow& pen_arrow::map_by(const affine& f)
-  {
-    m_shaft = edge2d(f(m_shaft.tail()), f(m_shaft.head()), m_shaft.is_seen());
-
-    return *this;
-  }
-
-
-  pen_arrow& pen_arrow::crop_to(const screen_mask& M)
-  {
-    // update head visibility; never re-mark as visible
-    if (M.crops(m_shaft.head()))
-      m_head_seen = false;
-
-   // screen masks are convex, so we're cropped iff an end is cropped
-    if (M.crops(m_shaft.head()) || M.crops(m_shaft.tail()))
-    {
-      std::list<edge2d> shaft;
-      shaft.push_back(m_shaft);
-      M.crop_path(shaft);
-
-      // search for visible segment; will find no more than one
-      bool still_seen(false);
-
-      for (std::list<edge2d>::const_iterator ep = shaft.begin();
-	   ep != shaft.end(); ++ep)
-	if ((*ep).is_seen())
-	  {
-	    still_seen = true;
-	    m_shaft = *ep;
-	  }
-
-      if (!still_seen)
-	{
-	  m_head_seen = false;
-	  m_shaft.seen(false);
-	}
-    }
-
-    return *this;
-  }
-
-  bool pen_arrow::is_empty() const
-  {
-    return !(m_head_seen && m_shaft.is_seen()) || m_line.color().is_unset();
-  }
-
-
-  /*
-   *
-   * 1: base, 2: foot, 3: tip, 4: ear_right, 5: ear_left
-   *
-           5
-            ...
-  .........  .....
-  .........1  2.....3
-  .........  .....
-	    ...
-           4
-  *        <-height->
-  *
-  *        <--> inset (fraction of height)
-  *
-  */
-  std::string pen_arrow::print_to(const format& fmt,
-				  const std::string& len) const
-  {
-    if (is_empty())
-      return "";
-
-    // else
-    std::stringstream obuf;
-
-    if (m_shaft.tail() == m_shaft.head()) // draw a ddot
-      {
-	label_state my_state(the_label_style());
-	my_state.text_color(m_line.color());
-
-	obuf << fmt.print_mark(m_shaft.tail(), pair(0,0),
-			       DDOT, the_mark_size(), my_state, len);
-      }
-
-    else
-      {
-	const pair head(m_shaft.head());
-	const double stretch(length("1pt").to(len).magnitude());
-
-	pair dir(head - m_shaft.tail());
-	double dist(norm(dir));
-
-	const pair unit_dir((stretch/dist)*dir);
-	const pair unit_perp(J(unit_dir));
-
-	const double wd(m_scale*m_style.width());
-	const double ht(m_style.ratio()*wd*m_shorten);
-
-	const pair base(head - ht*unit_dir);
-	const pair foot(head - (1-m_style.inset())*ht*unit_dir);
-
-	const pair  ear_left(base + wd*unit_perp);
-	const pair ear_right(base - wd*unit_perp);
-
-	std::list<edge2d> bd;
-	bd.push_back(edge2d(foot, ear_right, true));
-	bd.push_back(edge2d(ear_right, head, true));
-	bd.push_back(edge2d(head, ear_left, true));
-	bd.push_back(edge2d(ear_left, foot, true));
-
-	obuf << fmt.print_fill(bd, pair(0,0), m_line.color(), m_line, len);
-      }
-
-    return obuf.str();
-  }
-
-  void pen_arrow::add_to_pallet() const
-  {
-    if (!is_empty())
-      the_picture().add_to_pallet(m_line.color())
-	.add_to_pallet(m_base.color());
-  }
-} // end of namespace
diff --git a/graphics/epix/pen_arrow.h b/graphics/epix/pen_arrow.h
deleted file mode 100644
index 09f65e8a42..0000000000
--- a/graphics/epix/pen_arrow.h
+++ /dev/null
@@ -1,83 +0,0 @@
-/* 
- * pen_arrow.cc -- ePiX::pen_arrow class
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX
- *
- * Version 1.1.8
- * Last Change: July 19, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#ifndef EPIX_PEN_ARROW
-#define EPIX_PEN_ARROW
-
-#include <list>
-#include <string>
-
-#include "edge_data.h"
-#include "pen_data.h"
-#include "tile.h"
-
-namespace ePiX {
-
-  class affine;
-  class screen_mask;
-
-  // arrowhead tile class
-  class pen_arrow : public tile {
-  public:
-    pen_arrow(const pair& tail, const pair& head,
-	      const pen_data& line, const pen_data& base,
-	      double scale, double sin_th, bool head_seen);
-
-    pen_arrow* clone() const;
-
-    pen_arrow& map_by(const affine&);
-    pen_arrow& crop_to(const screen_mask&);
-
-    bool is_empty() const;
-
-    std::string print_to(const format&, const std::string&) const;
-    void add_to_pallet() const;
-
-  private:
-    edge2d m_shaft;
-
-    pen_data m_line;
-    pen_data m_base;
-
-    double m_scale;   // overall scale of head
-    double m_shorten; // foreshortening factor
-
-    bool m_head_seen;
-
-    arrowhead_state m_style;
-  }; // end of class pen_arrow
-
-} // end of namespace
-
-#endif /* EPIX_PEN_ARROW */
diff --git a/graphics/epix/pen_data.cc b/graphics/epix/pen_data.cc
deleted file mode 100644
index 95bcef0ec2..0000000000
--- a/graphics/epix/pen_data.cc
+++ /dev/null
@@ -1,88 +0,0 @@
-/* 
- * pen_data.cc -- ePiX's pen class
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.20
- * Last Change: September 19, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include "constants.h"
-
-#include "camera.h"
-#include "pen_data.h"
-
-namespace ePiX {
-
-  pen_data::pen_data(const Color& col, const length& wid)
-    : m_color(col), m_width(wid) { }
-
-  pen_data::pen_data(const Color& col)
-    : m_color(col), m_width(PLAIN_WIDTH) { }
-
-  // set
-  void pen_data::color(const Color& col)  { m_color = col; }
-  void pen_data::width(const length& len) { m_width = len; }
-
-  // get
-  Color  pen_data::color() const { return m_color; }
-  length pen_data::width() const { return m_width; }
-
-  bool pen_data::operator== (const pen_data& pen) const
-  {
-    return ((m_color == pen.m_color) && (m_width == pen.m_width));
-  }
-
-  bool pen_data::operator!= (const pen_data& pen) const
-  {
-    return !(*this == pen);
-  }
-
-  pen_data pen_data::seen_through(const Camera& mycam) const
-  {
-    Color col(m_color);
-    if (!col.is_unset())
-      col = mycam(col);
-
-    return pen_data(col, m_width);
-  }
-
-  bool pen_data::is_unset() const
-  {
-    return m_color.is_unset() || (m_width < length(EPIX_EPSILON));
-  }
-
-  // undrawn
-  const pen_data& Xfine()
-  {
-    static const pen_data*
-      const xfine_pen(new pen_data(Neutral(), length(0)));
-
-    return *xfine_pen;
-  }
-} // end of namespace
diff --git a/graphics/epix/pen_data.h b/graphics/epix/pen_data.h
deleted file mode 100644
index 643e7161fe..0000000000
--- a/graphics/epix/pen_data.h
+++ /dev/null
@@ -1,82 +0,0 @@
-/* 
- * pen_data.h -- Color and width
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.20
- * Last Change: September 19, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-/*
- * This file defines ePiX's concept of a pen (Color and length)
- *
- * This header is not part of epix.h.
- */
-#ifndef EPIX_PEN_DATA
-#define EPIX_PEN_DATA
-
-#include "Color.h"
-#include "length.h"
-
-namespace ePiX {
-
-  class Camera;
-
-  class pen_data {
-  public:
-    // plain black
-    pen_data(const Color& col, const length& wid);
-    pen_data(const Color& col=Black());
-
-    // set
-    void color(const Color& col);
-    void width(const length& len);
-
-    // get
-    Color  color() const;
-    length width() const;
-
-    bool operator== (const pen_data& pen) const;
-    bool operator!= (const pen_data& pen) const;
-
-    pen_data seen_through(const Camera& cam) const;
-
-    bool is_unset() const;
-
-  private:
-    Color  m_color;
-    length m_width;  
-  }; // end of class pen_data
-
-
-  // undrawn
-  const pen_data& Xfine();
-
-} // end of namespace
-
-#endif /* EPIX_PEN_DATA */
diff --git a/graphics/epix/pen_fill.cc b/graphics/epix/pen_fill.cc
deleted file mode 100644
index 5da5de647b..0000000000
--- a/graphics/epix/pen_fill.cc
+++ /dev/null
@@ -1,149 +0,0 @@
-/* 
- * pen_fill.cc -- ePiX::pen_fill class, for filled screen elements
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX
- *
- * Version 1.1.20
- * Last Change: September 19, 2007
- *
- * 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#include <string>
-
-#include "functions.h"
-
-#include "pairs.h"
-#include "affine.h"
-#include "screen_mask.h"
-
-#include "length.h"
-
-#include "pen_data.h"
-#include "path_style.h"
-
-#include "format.h"
-#include "picture_data.h"
-#include "picture.h"
-
-#include "edge_data.h"
-
-#include "tile.h"
-#include "pen_fill.h"
-
-namespace ePiX {
-
-  typedef std::list<edge2d>::const_iterator ep2;
-
-  pen_fill::pen_fill()
-    : m_tint(Neutral()), m_line(Xfine()), m_style(the_path_style()) { }
-
-  pen_fill::pen_fill(const Color& fill, const pen_data& line,
-		     const std::list<edge2d>& data)
-    : m_tint(fill), m_line(line),
-      m_style(the_path_style()), m_border(data), m_edges(data) { }
-
-  pen_fill::pen_fill(const Color& fill, const pen_data& line, double th,
-		     const std::list<edge2d>& data)
-    : m_tint(fill), m_line(line),
-      m_style(the_path_style()), m_border(data), m_edges(data) { }
-
-
-  pen_fill* pen_fill::clone() const
-  {
-    return new pen_fill(*this);
-  }
-
-
-  pen_fill& pen_fill::map_by(const affine& f)
-  {
-    if (m_border.size() == 0)
-      return *this;
-
-    // else map border
-    std::list<edge2d> bord;
-
-    for (ep2 p=m_border.begin(); p!=m_border.end(); ++p)
-      bord.push_back(edge2d(f(p->tail()), f(p->head()), (*p).is_seen()));
-
-    swap(m_border, bord);
-
-    // and edges
-    std::list<edge2d> edges;
-
-    for (ep2 p=m_edges.begin(); p!=m_edges.end(); ++p)
-      edges.push_back(edge2d(f(p->tail()), f(p->head()), (*p).is_seen()));
-
-    swap(m_edges, edges);
-    return *this;
-  }
-
-
-  pen_fill& pen_fill::crop_to(const screen_mask& M)
-  {
-    m_border = M.crop_loop(m_border);
-    m_edges  = M.crop_path(m_edges);
-    return *this;
-  }
-
-  bool pen_fill::is_empty() const
-  {
-    return (m_border.size() == 0
-	    || (m_tint.is_unset() && m_line.is_unset()));
-  }
-
-
-  std::string pen_fill::print_to(const format& fmt,
-				 const std::string& len) const
-  {
-    if (is_empty())
-      return "";
-
-    // else at least one is true
-    bool filled(!m_tint.is_unset());
-    bool edged(!m_line.is_unset());
-
-    // if solid bd, try to draw/fill in one step
-    if (m_style.is_solid() && filled && edged)
-      return fmt.print_fill(m_border, pair(0,0), m_tint, m_line, len);
-
-    // else draw fill, border separately
-    std::string val;
-
-    if (filled)
-      val += fmt.print_fill(m_border, pair(0,0), m_tint, 
-			    pen_data(m_tint, m_line.width()), len);
-
-    if (edged)
-      val += fmt.print_line(m_edges, pair(0,0), m_line, Xfine(),
-			    m_style, len);
-
-    return val;
-  }
-
-  void pen_fill::add_to_pallet() const
-  {
-    the_picture().add_to_pallet(m_tint).add_to_pallet(m_line.color());
-  }
-} // end of namespace
diff --git a/graphics/epix/pen_fill.h b/graphics/epix/pen_fill.h
deleted file mode 100644
index 12abe4707e..0000000000
--- a/graphics/epix/pen_fill.h
+++ /dev/null
@@ -1,83 +0,0 @@
-/* 
- * pen_fill.cc -- ePiX::pen_fill class, for filled screen elements
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX
- *
- * Version 1.1.11
- * Last Change: August 12, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#ifndef EPIX_PEN_FILL
-#define EPIX_PEN_FILL
-
-#include <list>
-#include <string>
-
-#include "edge_data.h"
-
-#include "Color.h"
-#include "path_style.h"
-#include "tile.h"
-
-namespace ePiX {
-
-  class length;
-  class screen_mask;
-
-  class pen_fill : public tile {
-  public:
-    pen_fill();
-
-    pen_fill(const Color&, const pen_data&, const std::list<edge2d>&);
-
-    pen_fill(const Color&, const pen_data&, double theta,
-	     const std::list<edge2d>&);
-
-    pen_fill* clone() const;
-
-    pen_fill& map_by(const affine&);
-    pen_fill& crop_to(const screen_mask&);
-
-    bool is_empty() const;
-
-    std::string print_to(const format&, const std::string&) const;
-    void add_to_pallet() const;
-
-  private:
-    Color    m_tint;
-    pen_data m_line;
-
-    path_state m_style;
-
-    std::list<edge2d> m_border; // filled boundary (loop)
-    std::list<edge2d> m_edges;  // visible boundary (path)
-  }; // end of class pen_fill
-
-} // end of namespace
-
-#endif /* EPIX_PEN_FILL */
diff --git a/graphics/epix/pen_line.cc b/graphics/epix/pen_line.cc
deleted file mode 100644
index 9ce7621a4d..0000000000
--- a/graphics/epix/pen_line.cc
+++ /dev/null
@@ -1,125 +0,0 @@
-/* 
- * pen_line.cc -- ePiX::pen_line class, for line-like objects
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX
- *
- * Version 1.1.20
- * Last Change: September 19, 2007
- *
- * 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#include "functions.h"
-
-#include "pairs.h"
-#include "affine.h"
-#include "screen_mask.h"
-
-#include "length.h"
-
-#include "pen_data.h"
-#include "paint_style.h"
-
-#include "format.h"
-#include "picture_data.h" // for add_to_pallet()
-#include "picture.h"      // for the_picture()
-
-#include "edge_data.h"
-
-#include "tile.h"
-#include "pen_line.h"
-
-namespace ePiX {
-
-  typedef std::list<edge2d>::const_iterator ep2;
-
-  pen_line::pen_line()
-    : m_line(the_paint_style().line_pen()),
-      m_base(the_paint_style().base_pen()), m_style(the_path_style()) { }
-
-  pen_line::pen_line(const pen_data& line, const pen_data& base,
-		     const std::list<edge2d>& data)
-    : m_line(line), m_base(base), m_style(the_path_style()), m_border(data) { }
-
-
-  pen_line* pen_line::clone() const
-  {
-    return new pen_line(*this);
-  }
-
-
-  pen_line& pen_line::map_by(const affine& f)
-  {
-    if (m_border.size() == 0)
-      return *this;
-
-    std::list<edge2d> bord;
-
-    for (ep2 p=m_border.begin(); p!=m_border.end(); ++p)
-      bord.push_back(edge2d(f(p->tail()), f(p->head()), (*p).is_seen()));
-
-    swap(m_border, bord);
-    return *this;
-  }
-
-
-  pen_line& pen_line::crop_to(const screen_mask& M)
-  {
-    m_border = M.crop_path(m_border);
-    return *this;
-  }
-
-
-  bool pen_line::is_empty() const
-  {
-    // N.B. line trumps base, even if base is otherwise visible
-    return (m_border.size() == 0 ||
-	    m_line.color().is_unset() ||
-	    m_line.width() == length(0));
-  }
-
-
-  std::string pen_line::print_to(const format& fmt,
-				 const std::string& len) const
-  {
-    if (is_empty())
-      return "";
-
-    // else
-    return fmt.print_line(m_border, pair(0,0), m_line, m_base, m_style, len);
-  }
-
-  void pen_line::add_to_pallet() const
-  {
-    // add_to_pallet checks for unset
-    the_picture().add_to_pallet(m_line.color())
-      .add_to_pallet(m_base.color());
-  }
-
-  void pen_line::add(const edge2d& E)
-  {
-    m_border.push_back(E);
-  }
-} // end of namespace
-
diff --git a/graphics/epix/pen_line.h b/graphics/epix/pen_line.h
deleted file mode 100644
index 6713b5de74..0000000000
--- a/graphics/epix/pen_line.h
+++ /dev/null
@@ -1,79 +0,0 @@
-/* 
- * pen_line.h -- ePiX::pen_line class, for line-like objects
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX
- *
- * Version 1.1.3
- * Last Change: March 04, 2007
- *
- * 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- *
- *
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#ifndef EPIX_PEN_LINE
-#define EPIX_PEN_LINE
-
-#include <list>
-#include <string>
-
-#include "edge_data.h"
-#include "pen_data.h"
-#include "path_style.h"
-#include "tile.h"
-
-namespace ePiX {
-
-  class length;
-  class affine;
-  class screen_mask;
-
-  class pen_line : public tile {
-  public:
-    pen_line();
-    pen_line(const pen_data&, const pen_data&, const std::list<edge2d>&);
-
-    pen_line* clone() const;
-
-    pen_line& map_by(const affine&);
-    pen_line& crop_to(const screen_mask&);
-
-    bool is_empty() const;
-
-    std::string print_to(const format&, const std::string&) const;
-    void add_to_pallet() const;
-
-    void add(const edge2d&);
-
-  private:
-    pen_data m_line;
-    pen_data m_base;
-
-    path_state m_style;
-
-    std::list<edge2d> m_border;
-
-  }; // end of class pen_line
-
-} // end of namespace
-
-#endif /* EPIX_PEN_LINE */
diff --git a/graphics/epix/picture.cc b/graphics/epix/picture.cc
deleted file mode 100644
index d194edf5f4..0000000000
--- a/graphics/epix/picture.cc
+++ /dev/null
@@ -1,429 +0,0 @@
-/* 
- * picture.cc -- ePiX::epix_picture class, and global functions
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.2.0-2
- * Last Change: September 26, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include <sstream>
-
-#include "triples.h"
-#include "errors.h"
-
-#include "functions.h"
-#include "length.h"
-
-#include "verbatim.h"
-#include "screen_data.h"
-
-#include "screen_mask.h"
-
-#include "screen.h"
-#include "active_screen.h"
-
-#include "eepic.h"
-#include "pst.h"
-#include "tikz.h"
-
-#include "picture_data.h"
-#include "picture.h"
-
-namespace ePiX {
-
-  // static objects
-  picture_data& the_picture()
-  {
-    static picture_data* the_root_picture(new picture_data());
-    return *the_root_picture;
-  }
-
-  double& xmin()
-  {
-    static double* the_x_min(new double);
-    return *the_x_min;
-  }
-
-  double& xmax()
-  {
-    static double* the_x_max(new double);
-    return *the_x_max;
-  }
-
-  double& xsize()
-  {
-    static double* the_x_size(new double);
-    return *the_x_size;
-  }
-
-  double& ymin()
-  {
-    static double* the_y_min(new double);
-    return *the_y_min;
-  }
-
-  double& ymax()
-  {
-    static double* the_y_max(new double);
-    return *the_y_max;
-  }
-
-  double& ysize()
-  {
-    static double* the_y_size(new double);
-    return *the_y_size;
-  }
-
-
-  double & tix()
-  {
-    static double* the_tix(new double);
-    return *the_tix;
-  }
-
-
-  void bounding_box(const P& arg1, const P& arg2)
-  {
-    xmin()=min(arg1.x1(), arg2.x1());
-    xmax()=max(arg1.x1(), arg2.x1());
-
-    ymin()=min(arg1.x2(), arg2.x2());
-    ymax()=max(arg1.x2(), arg2.x2());
-
-    xsize() = xmax() - xmin();
-    if (xsize() == 0)
-      epix_error("Bounding box has width zero!");
-
-    ysize() = ymax() - ymin();
-    if (ysize() == 0)
-      epix_error("Bounding box has height zero!");
-
-    // else
-    the_picture().the_canvas
-      = screen(P(xmin(), ymin()), P(xmax(), ymax()));
-  }
-
-
-  // one-line initializer
-  void picture(const P& arg1, const P& arg2, std::string sz)
-  {
-    // bounding_box()
-    the_picture().the_canvas
-      = screen(P(arg1.x1(), arg1.x2()), P(arg2.x1(), arg2.x2()));
-
-    xmin()  = the_picture().the_canvas.h_min();
-    xmax()  = the_picture().the_canvas.h_max();
-    xsize() = the_picture().the_canvas.h_size();
-
-    ymin()  = the_picture().the_canvas.v_min();
-    ymax()  = the_picture().the_canvas.v_max();
-    ysize() = the_picture().the_canvas.v_size();
-
-
-    // parse size string
-    length pic_hsize, pic_vsize;
-    get_lengths(sz, pic_hsize, pic_vsize);
-
-    // width units take precedence
-    std::string u(pic_hsize.units());
-    pic_vsize.to(u);
-    the_picture().the_hoffset.to(u);
-    the_picture().the_voffset.to(u);
-
-    // unitlength()
-    the_picture().the_unitlength = length("1"+u);
-
-    // offset()
-    the_picture().the_hoffset = length("0"+u);
-    the_picture().the_voffset = length("0"+u);
-
-    // picture()
-    the_picture().the_page
-      = screen(P(0,0), P(pic_hsize.magnitude(), pic_vsize.magnitude()));
-
-    if (xsize() == 0 || pic_hsize.magnitude() == 0)
-      epix_error("Picture has width zero!");
-
-    if (ysize() == 0 || pic_vsize.magnitude() == 0)
-      epix_error("Picture has height zero!");
-  }
-
-  // old initializers
-  void picture(double horiz, double vert)
-  {
-    if (horiz == 0)
-      epix_error("Picture has width zero!");
-
-    if (vert == 0)
-      epix_error("Picture has height zero!");
-
-    the_picture().the_page = screen(P(0,0), P(horiz, vert));
-  }
-
-  void picture(const P& arg)
-  {
-    picture(arg.x1(), arg.x2());
-  }
-
-  // same syntax as for picture dimensions
-  void offset(std::string sz)
-  {
-    length hoff, voff;
-    std::string units(the_picture().the_unitlength.units());
-
-    get_lengths(sz, hoff, voff);
-
-    the_picture().the_hoffset=hoff.to(units);
-    the_picture().the_voffset=voff.to(units);
-  }
-
-  void offset(double hoff, double voff)
-  {
-    std::string u(the_picture().the_unitlength.units());
-
-    std::stringstream hbuf, vbuf;
-    hbuf << hoff << u;
-    vbuf << voff << u;
-
-    the_picture().the_hoffset = length(hbuf.str());
-    the_picture().the_voffset = length(vbuf.str());
-  }
-
-  void offset(const P& arg)
-  {
-    offset(arg.x1(), arg.x2());
-  }
-
-  void unitlength(const std::string& units)
-  {
-    the_picture().the_unitlength = length(units);
-  }
-
-
-  void begin()
-  {
-    const double mult(the_picture().the_unitlength.magnitude());
-    if (mult != 1) // someone called unitlength(); must adjust size, offsets
-      {
-	const P TR(the_picture().the_page.tr());
-	the_picture().the_page = screen(P(0,0), mult*TR);
-
-	the_picture().the_hoffset *= mult;
-	the_picture().the_voffset *= mult;
-      }
-
-    // If we've seen bounding_box or equivalent, this properly initializes.
-    // Otherwise we'll segfault momentarily... :(
-    active_screen();
-  }
-
-  void end_picture()
-  {
-    the_picture().print();
-  }
-
-  screen& canvas()
-  {
-    return the_picture().the_canvas;
-  }
-
-  void activate(screen& scr)
-  {
-    the_screen_stack().push(scr);
-  }
-
-  void deactivate(screen& scr)
-  {
-    const screen* active(the_screen_stack().pop());
-
-    if (active != &scr)
-      epix_warning("Deactivation requested for non-active screen");
-  }
-
-  // page layout
-  void import()
-  {
-    if (&(the_picture().the_canvas) != active_screen())
-      the_picture().the_canvas.paste(*active_screen());
-  }
-
-  void inset(const P& sw, const P& ne)
-  {
-    if (&(the_picture().the_canvas) != active_screen())
-      the_picture().the_canvas.paste(*active_screen(), sw, ne);
-  }
-
-
-  void import(const screen& child)
-  {
-    the_picture().the_canvas.paste(child);
-  }
-
-  void inset(const screen& child, const P& sw, const P& ne)
-  {
-    the_picture().the_canvas.paste(child, sw, ne);
-  }
-
-  void inset(const screen& child)
-  {
-    the_picture().the_canvas.paste(child, child.bl(), child.tr());
-  }
-
-  void inlay(const screen& child, const P& loc)
-  {
-    const std::string units(the_picture().the_unitlength.units());
-    const double scale(length("1pt").to(units).magnitude());
-    double H(active_screen()->h_size()/the_picture().the_page.h_size());
-    double V(active_screen()->v_size()/the_picture().the_page.v_size());
-
-    active_screen()->paste(child,
-			   loc + H*scale*child.bl(),
-			   loc + V*scale*child.tr());
-  }
-
-  // interpret stated coord as true pt, the other as Cartesian
-  void inlay_vertical(const screen& child, const P& loc)
-  {
-    const std::string units(the_picture().the_unitlength.units());
-    const double scale(length("1pt").to(units).magnitude());
-    double V(active_screen()->v_size()/the_picture().the_page.v_size());
-
-    active_screen()->paste(child,
-			   loc + child.l() + V*scale*child.b(),
-			   loc + child.r() + V*scale*child.t());
-  }
-
-  void inlay_horizontal(const screen& child, const P& loc)
-  {
-    const std::string units(the_picture().the_unitlength.units());
-    const double scale(length("1pt").to(units).magnitude());
-    double H(active_screen()->h_size()/the_picture().the_page.h_size());
-
-    active_screen()->paste(child,
-			   loc + child.b() + H*scale*child.l(),
-			   loc + child.t() + H*scale*child.r());
-  }
-
-  void backing(const Color& col)
-  {
-    active_screen()->backing(col);
-  }
-
-  void border(const Color& col, double len)
-  {
-    active_screen()->border(col, len);
-  }
-
-  void border(const Color& col, const std::string& len)
-  {
-    active_screen()->border(col, len);
-  }
-
-  void backing()
-  {
-    active_screen()->backing();
-  }
-
-  void border()
-  {
-    active_screen()->border();
-  }
-
-  void write(const std::string& text)
-  {
-    active_screen()->m_screen->add_tile(verbatim(text));
-  }
-
-  void pre_write(const std::string& text)
-  {
-    the_picture().pre_write(text);
-  }
-
-  void post_write(const std::string& text)
-  {
-    the_picture().post_write(text);
-  }
-
-  void eepic_format()
-  {
-    the_picture().set_format(eepic());
-  }
-
-  void tikz_format()
-  {
-    the_picture().set_format(tikz());
-  }
-
-  void pst_format()
-  {
-    the_picture().set_format(pst());
-  }
-
-
-  // write in specified format to named output file
-  void print_eepic(const std::string& filename)
-  {
-    the_picture().print_to(filename, eepic());
-  }
-
-  void print_tikz(const std::string& filename)
-  {
-    the_picture().print_to(filename, tikz());
-  }
-
-  void print_pst(const std::string& filename)
-  {
-    the_picture().print_to(filename, pst());
-  }
-
-
-  double pic_units_per_pt()
-  {
-    return length("1pt").to(the_picture().the_unitlength.units()).magnitude();
-  }
-
-  // approximate, but correct at true aspect ratio
-  double units_per_pic_unit()
-  {
-    const double H(active_screen()->h_size()/the_picture().the_page.h_size());
-    const double V(active_screen()->v_size()/the_picture().the_page.v_size());
-
-    return 0.5*(H+V);
-  }
-
-  double pt_to_screen(double arg)
-  {
-    return arg*units_per_pic_unit()*pic_units_per_pt();
-  }
-
-  // initialize deprecated globals
-  double x_min(xmin()), x_max(xmax()), x_size(xsize());
-  double y_min(ymin()), y_max(ymax()), y_size(ysize());
-
-} // end of namespace
diff --git a/graphics/epix/picture.h b/graphics/epix/picture.h
deleted file mode 100644
index 38258fc02c..0000000000
--- a/graphics/epix/picture.h
+++ /dev/null
@@ -1,170 +0,0 @@
-/* 
- * picture.h -- ePiX globals functions for picture interface
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.16
- * Last Change: September 11, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#ifndef EPIX_PICTURE
-#define EPIX_PICTURE
-
-#include <string>
-
-namespace ePiX {
-
-  class Color;
-  class P;
-  class picture_data;
-  class screen;
-
-  // "global" references
-  picture_data& the_picture();
-
-  double& xmin();
-  double& xmax();
-  double& xsize();
-
-  double& ymin();
-  double& ymax();
-  double& ysize();
-
-  double& tix();
-
-  // preferred initialization functions
-  // corners and dimensions, e.g. "4in x 15cm" or "4 x 6in"
-  // (width units take precedence, dimension string must be passed by value)
-  void picture(const P& arg1, const P& arg2, std::string);
-
-  // same syntax as for picture dimensions
-  void offset(std::string);
-
-  //// Old global functions for manipulating the page markup region ////
-  void bounding_box(const P&, const P&);
-
-  void picture(double, double);
-  void picture(const P&);
-
-  void offset(double hoff, double voff);
-  void offset(const P& arg);
-
-  void unitlength(const std::string& units);
-
-  // activate default screen
-  void begin();
-  // write the output file
-  void end_picture();
-
-  //// New global functions ////
-  // the_picture().the_canvas
-  screen& canvas();
-
-  // specify active screen; pass non-const ref only to assign/compare pointer
-  void activate(screen&);
-  void deactivate(screen&);
-
-  // add active or specified screen to the_picture
-  void import();
-  void inset(const P& sw, const P& ne);
-
-  void import(const screen& child);
-  void inset(const screen& child, const P& sw, const P& ne);
-
-  void inset(const screen& child); // use child's corners
-
-  // interpret child's coordinates as true pt on the page,
-  // place origin at P
-  void inlay(const screen& child, const P& loc);
-
-  // interpret stated coord as true pt, the other as Cartesian
-  void inlay_vertical(const screen& child, const P& loc);
-  void inlay_horizontal(const screen& child, const P& loc);
-
-  // set decorations on active screen
-  void backing(const Color&);
-  void border(const Color&, double); // width in pt
-  void border(const Color&, const std::string&);
-
-  void backing(); // use current fill style
-  void border();  // use current line pen
-
-  // write verbatim string to output file
-  void write(const std::string&);
-
-  void pre_write(const std::string&); // before picture header
-  void post_write(const std::string&); // after picture footer
-
-  // set output format
-  void eepic_format();
-  //  void mp_format();
-  void tikz_format();
-  void pst_format();
-
-  // write in specified format to named output file
-  void print_eepic(const std::string& filename);
-  // void print_mp(const std::string& filename);
-  void print_tikz(const std::string& filename);
-  void print_pst(const std::string& filename);
-
-  // allow user to override in-file format request on the command line
-  inline void end()
-    {
-#ifdef EPIX_FMT_PSTRICKS
-      pst_format();
-#else
-#ifdef EPIX_FMT_TIKZ
-      tikz_format();
-#else
-#ifdef EPIX_FMT_EEPIC
-      eepic_format();
-#endif /* EPIX_FMT_EEPIC */
-#endif /* EPIX_FMT_TIKZ */
-#endif /* EPIX_FMT_PSTRICKS */
-      end_picture();
-    }
-
-  // for implementors of true-size elements
-  double pic_units_per_pt();   // exact
-  double units_per_pic_unit(); // approximate, exact at true aspect ratio
-  double pt_to_screen(double); // true length to screen length
-
-  ////////////////////////////////////////////////////////////////
-  ////                                                        ////
-  ////    DEPRECATED global variables required for backward   ////
-  ////    compatibility. Will be removed in a future release. ////
-  ////    Use reference functions xmin() et. al.              ////
-  ////                                                        ////
-  ////////////////////////////////////////////////////////////////
-
-  // bounding_box corners and dimensions
-  extern double x_min, x_max, x_size, y_min, y_max, y_size;
-
-} // end of namespace
-
-#endif /* EPIX_PICTURE */
diff --git a/graphics/epix/picture_data.cc b/graphics/epix/picture_data.cc
deleted file mode 100644
index a16c0552b8..0000000000
--- a/graphics/epix/picture_data.cc
+++ /dev/null
@@ -1,193 +0,0 @@
-/* 
- * picture_data.cc -- ePiX::picture implementation class
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.18
- * Last Change: September 14, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#include <iostream>
-#include <fstream>
-#include <sstream>
-
-#include "errors.h"
-#include "utils.h"
-#include "Color.h"
-
-#include "verbatim.h"
-
-#include "format.h"
-#include "eepic.h" // default format
-#include "picture.h"
-
-#include "screen_data.h"
-#include "picture_data.h"
-
-namespace ePiX {
-
-  picture_data::picture_data()
-    : m_format(new eepic()), m_pallet() { }
-
-
-  picture_data::picture_data(const picture_data& pd)
-    : the_unitlength(pd.the_unitlength),
-      the_hoffset(pd.the_hoffset), the_voffset(pd.the_voffset),
-      the_canvas(pd.the_canvas), the_page(pd.the_page),
-      m_format(pd.m_format->clone()), m_pallet(pd.m_pallet),
-      m_pre_writes(pd.m_pre_writes), m_post_writes(pd.m_post_writes) { }
-
-
-  picture_data& picture_data::operator= (const picture_data& pd)
-  {
-    if (this != &pd)
-      {
-	format* tmp_fmt(pd.m_format->clone());
-
-	// okay, safe to muck with our data
-	the_unitlength = pd.the_unitlength;
-	the_hoffset = pd.the_hoffset;
-	the_voffset = pd.the_voffset;
-
-	the_canvas = pd.the_canvas;
-	the_page = pd.the_page;
-
-	delete m_format;
-	m_format = tmp_fmt;
-
-	m_pallet = pd.m_pallet;
-
-	m_pre_writes  = pd.m_pre_writes;
-	m_post_writes = pd.m_post_writes;
-      }
-
-    return *this;
-  } // end of copy assignment
-
-  picture_data::~picture_data()
-  {
-    delete m_format;
-  }
-
-
-  picture_data& picture_data::add_to_pallet(const Color& col)
-  {
-    if (!col.is_unset())
-      m_pallet.insert(col);
-    return *this;
-  }
-
-  void picture_data::set_format(const format& fmt)
-  {
-    m_format = fmt.clone();
-  }
-
-  void picture_data::print()
-  {
-    print_to(*m_format);
-  }
-
-  void picture_data::print_to(const format& fmt)
-  {
-    the_page.clear();
-    the_page.paste(the_canvas);
-
-    const pair offset(the_hoffset.magnitude(), the_voffset.magnitude());
-
-    std::cout << fmt.file_comments(the_unitlength.units(),
-				   the_hoffset, the_voffset,
-				   xmin(), xmax(), ymin(), ymax(),
-				   the_page.h_size(), the_page.v_size());
-
-    for (std::list<verbatim>::const_iterator p = m_pre_writes.begin();
-	 p != m_pre_writes.end(); ++p)
-      std::cout << (*p).print_to(fmt, the_unitlength.units());
-
-    // the_page.br() = (0,0), so tr() is size
-    std::cout << fmt.pic_header(the_page.tr(), offset,
-				m_pallet, the_unitlength.units())
-
-	      << the_page.m_screen->print_to(fmt, the_unitlength)
-
-	      << fmt.pic_footer();
-
-    for (std::list<verbatim>::const_iterator p = m_post_writes.begin();
-	 p != m_post_writes.end(); ++p)
-      std::cout << (*p).print_to(fmt, the_unitlength.units());
-  }
-
-  void picture_data::print_to(const std::string& filename, const format& fmt)
-  {
-    const char* fn(filename.c_str());
-
-    std::ofstream output(fn);
-    if (!output)
-      {
-	epix_warning("Cannot open file " + filename);
-	return;
-      }
-
-    // else
-    the_page.clear();
-    the_page.paste(the_canvas);
-
-    const pair offset(the_hoffset.magnitude(), the_voffset.magnitude());
-
-    output << fmt.file_comments(the_unitlength.units(),
-				the_hoffset, the_voffset,
-				xmin(), xmax(), ymin(), ymax(),
-				the_page.h_size(), the_page.v_size());
-
-    for (std::list<verbatim>::const_iterator p = m_pre_writes.begin();
-	 p != m_pre_writes.end(); ++p)
-      output << (*p).print_to(fmt, the_unitlength.units());
-
-    // the_page.br() = (0,0), so tr() is size
-    output << fmt.pic_header(the_page.tr(), offset,
-			     m_pallet, the_unitlength.units())
-
-	   << the_page.m_screen->print_to(fmt, the_unitlength)
-
-	   << fmt.pic_footer();
-
-    for (std::list<verbatim>::const_iterator p = m_post_writes.begin();
-	 p != m_post_writes.end(); ++p)
-      output << (*p).print_to(fmt, the_unitlength.units());
-
-    output.close();
-  }
-
-  void picture_data::pre_write(const std::string& text)
-  {
-    m_pre_writes.push_back(verbatim(text));
-  }
-
-  void picture_data::post_write(const std::string& text)
-  {
-    m_post_writes.push_back(verbatim(text));
-  }
-} // end of namespace
diff --git a/graphics/epix/picture_data.h b/graphics/epix/picture_data.h
deleted file mode 100644
index 518dbb966b..0000000000
--- a/graphics/epix/picture_data.h
+++ /dev/null
@@ -1,113 +0,0 @@
-/* 
- * picture_data.h -- ePiX::picture implementation class
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.7
- * Last Change: July 14, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-/*
- * The picture_data class was designed with three primary goals:
- *
- * (i) Encapsulate state data formerly scattered (and inconsistently
- *   structured) through multiple files,
- *
- * (ii) Provide some of the flexibility of building a scene in memory
- *   instead of writing data immediately to the output,
- *
- * (iii) Ensure compatibility with existing syntax.
- *
- * A picture_data comprises two screens (canvas -- the bounding_box, and
- * page -- the picture box), unitlength and offsets, state data
- * (clip_box; angle units; styles for labels, painting, and arrowheads),
- * and a set of colors so that color dclarations in the output file can
- * be made using named colors.
- *
- * Dozens of global and member functions need to access and modify
- * the_picture(). Instead of making these functions friends, our data
- * (except for the color pallet) are public. Under the circumstances,
- * this seemed the Path of Least Evil.
- */
-#ifndef EPIX_PICTURE_DATA
-#define EPIX_PICTURE_DATA
-
-#include <string>
-#include <list>
-#include <set>
-
-#include "verbatim.h"
-
-#include "length.h"
-#include "Color.h"
-#include "screen.h"
-
-namespace ePiX {
-
-  class format;
-
-  class picture_data {
-  public:
-    // rely on members' default constructors
-    picture_data();
-
-    picture_data(const picture_data&);
-    picture_data& operator= (const picture_data&);
-    ~picture_data();
-
-    picture_data& add_to_pallet(const Color&);
-
-    void set_format(const format&);
-
-    // output requires knowledge of unitlength; all other ops handled by data
-    void print();
-    void print_to(const format&);
-    void print_to(const std::string& filename, const format&);
-
-    void  pre_write(const std::string&);
-    void post_write(const std::string&);
-
-    //// public data (true size, offsets, and screens) ////
-    length the_unitlength;
-    length the_hoffset, the_voffset;
-
-    screen the_canvas;
-    screen the_page;
-
-
-  private:
-    format* m_format;
-    std::set<Color> m_pallet;
-    // user-specified strings to be written before/after start of picture
-    std::list<verbatim> m_pre_writes;
-    std::list<verbatim> m_post_writes;
-  }; // end of class picture_data
-
-} // end of namespace
-
-#endif /* EPIX_PICTURE_DATA */
diff --git a/graphics/epix/plane.cc b/graphics/epix/plane.cc
deleted file mode 100644
index 148e81a7e0..0000000000
--- a/graphics/epix/plane.cc
+++ /dev/null
@@ -1,143 +0,0 @@
-/* 
- * plane.cc -- ePiX::Plane class and mathematical operators
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.17
- * Last Change: September 13, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include "constants.h"
-#include "errors.h"
-
-#include "curves.h" // for draw()
-
-#include "plane.h"
-
-namespace ePiX {
-
-  const double INF(2*EPIX_INFTY);
-
-  Plane::Plane(const P& pt, const P& perp)
-    : m_pt(pt), m_perp(perp), m_malformed(false)
-  { 
-    double temp(norm(perp));
-
-    if (temp < EPIX_EPSILON)
-      {
-	epix_warning("Degenerate plane normal, using (0,0,1)");
-	m_perp=E_3;
-      }
-
-    else
-      m_perp *= 1.0/temp;
-  }
-
-  Plane::Plane(const P& p1, const P& p2, const P& p3)
-    : m_pt(p1), m_malformed(false)
-  {
-    P perp((p3-p1)*(p2-p1));
-    double norm_perp(norm(perp));
-
-    if (norm_perp < EPIX_EPSILON)
-      {
-	epix_warning("Collinear points in Plane constructor");
-	m_malformed = true;
-      }
-
-    else
-      m_perp = (1/norm_perp)*perp;
-  }
-
-
-  P Plane::pt() const
-  {
-    return m_pt;
-  }
-
-  P Plane::perp() const
-  {
-    return m_perp;
-  }
-
-  bool Plane::malformed() const
-  {
-    return m_malformed;
-  }
-
-  // translate
-  Plane& Plane::shift(const P& arg)
-  {
-    if (!m_malformed)
-      m_pt += arg;
-    return *this;
-  }
-
-  Plane& Plane::move_to(const P& arg)
-  {
-    if (!m_malformed)
-      m_pt = arg;
-    return *this;
-  }
-
-  void Plane::draw() const
-  {
-    if (m_malformed)
-      return;
-
-    // else
-    const P ctr((m_pt|m_perp)*m_perp); // closest point to origin
-
-    // construct an orthonormal basis
-    P e1(m_perp*E_1);
-
-    if (norm(e1) < 0.7) // ~sqrt(0.5)
-      e1 = m_perp*E_2;
-
-    e1 *= 1.0/norm(e1);
-    P e2(m_perp*e1);
-
-    // very large rectangle
-    quad(ctr + INF*( e1 + e2), ctr + INF*(-e1 + e2),
-	 ctr + INF*(-e1 - e2), ctr + INF*( e1 - e2));
-  }
-
-
-  //// global functions ////
-  void plane(const P& point, const P& normal)
-  {
-    Plane pl(point, normal);
-    pl.draw();
-  }
-
-  void plane(const P& p1, const P& p2, const P& p3)
-  {
-    Plane pl(p1, p2, p3);
-    pl.draw();
-  }
-} // end of namespace
diff --git a/graphics/epix/plane.h b/graphics/epix/plane.h
deleted file mode 100644
index 637e3e8240..0000000000
--- a/graphics/epix/plane.h
+++ /dev/null
@@ -1,74 +0,0 @@
-/* 
- *  plane.h -- ePiX::Plane class
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.17
- * Last Change: September 13, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#ifndef EPIX_PLANE
-#define EPIX_PLANE
-
-#include "triples.h"
-
-namespace ePiX {
-
-  class Circle;
-  class Plane;
-  class Segment;
-  class Sphere;
-
-  class Plane {
-  public:
-    Plane(const P& pt=P(0,0,0), const P& perp=E_3);
-    Plane(const P&, const P&, const P&);
-
-    P pt() const;
-    P perp() const;
-    bool malformed() const;
-
-    // affine operations
-    Plane& shift(const P&);
-    Plane& move_to(const P&);
-
-    void draw() const;
-
-  private:
-    P m_pt;
-    P m_perp; // unit normal
-
-    bool m_malformed;
-  }; // end of Plane class
-
-  void plane(const P& pt=P(0,0,0), const P& perp=E_3);
-  void plane(const P&, const P&, const P&);
-
-} // end of namespace
-
-#endif /* EPIX_PLANE */
diff --git a/graphics/epix/plot_algorithms.h b/graphics/epix/plot_algorithms.h
deleted file mode 100644
index 3566915f09..0000000000
--- a/graphics/epix/plot_algorithms.h
+++ /dev/null
@@ -1,245 +0,0 @@
-/*
- * plot_algorithms.h -- plot function templates, for build use only
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Andrew D. Hwang   <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- *
- * Version 1.1.9
- * Last Change: August 01, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-/*
- * This file provides plotting templates, with T a class
- *
- *  void plot_map_dom(const T&, const domain&)
- *  void plot_map_domlist(const T&, const domain_list&)
- *  void plot_function(const T&, double, double, int)
- *  void euler_plot(const T&, const P&, double, double, int)
- *  P    euler_flow(const T&, P start, double, int)
- */
-
-#ifndef EPIX_PLOT_ALGO
-#define EPIX_PLOT_ALGO
-
-#include <cmath>
-#include <list>
-
-#include "constants.h"
-
-#include "triples.h"
-#include "functions.h"
-
-#include "edge_data.h"
-
-#include "paint_style.h"
-
-#include "domain.h"
-#include "path_data.h"
-
-namespace ePiX {
-
-  typedef std::list<domain>::const_iterator dolci;
-
-  const double INF(EPIX_INFTY);
-
-  // Are args endpoints of a plottable edge?
-  static bool is_valid(const P& tail, const P& head)
-    {
-      return tail.is_valid() && head.is_valid();
-    }
-
-  template<class T> void plot_map_dom(const T& map, const domain& R)
-    {
-      // only attempt to fill if plotting a curve
-      const bool is_curve(R.dim() == 1);
-      const bool filling(is_curve && the_paint_style().fill_flag());
-
-      // max summation indices
-      unsigned int i_max((R.dx1() > 0) ? R.coarse_n1() : 0);
-      unsigned int j_max((R.dx2() > 0) ? R.coarse_n2() : 0);
-      unsigned int k_max((R.dx3() > 0) ? R.coarse_n3() : 0);
-
-      if (R.dx1() > 0) // there's something to draw
-	{
-	  // number of intervals in subdivision
-	  unsigned int count1(R.fine_n1());
-
-	  const double st1(R.dx1());
-	  const double st2(R.step2());
-	  const double st3(R.step3());
-
-	  for (unsigned int j=0; j <= j_max; ++j)
-	    for (unsigned int k=0; k <= k_max; ++k)
-	      {
-		std::list<edge3d> data1;
-		const P init(R.corner1() + (j*st2)*E_2 + (k*st3)*E_3);
-
-		for (unsigned int i=0; i < count1; ++i)
-		  {
-		    P curr(map(init + P(i*st1,0,0)));
-		    P next(map(init + P((i+1)*st1,0,0)));
-		    data1.push_back(edge3d(curr, next, is_valid(curr, next)));
-		  }
-
-		// close path if initial and terminal points coincide
-		bool closed(is_curve &&
-			    map(init) == map(init + P(count1*st1,0,0)));
-
-		path_data path1(data1, closed && filling, filling);
-		path1.draw();
-	      }
-	}
-
-      if (R.dx2() > 0)
-	{
-	  unsigned int count2(R.fine_n2());
-
-	  const double st1(R.step1());
-	  const double st2(R.dx2());
-	  const double st3(R.step3());
-
-	  for (unsigned int i=0; i <= i_max; ++i)
-	    for (unsigned int k=0; k <= k_max; ++k)
-	      {
-		std::list<edge3d> data2;
-		const P init(R.corner1() + (i*st1)*E_1 + (k*st3)*E_3);
-	      
-		for (unsigned int j=0; j < count2; ++j)
-		  {
-		    P curr(map(init + P(0,j*st2,0)));
-		    P next(map(init + P(0,(j+1)*st2,0)));
-		    data2.push_back(edge3d(curr, next, is_valid(curr, next)));
-		  }
-
-		// close path if initial and terminal points coincide
-		bool closed(is_curve &&
-			    map(init) == map(init + P(0,count2*st2,0)));
-
-		path_data path2(data2, closed && filling, filling);
-		path2.draw();
-	      }
-	}
-
-      if (R.dx3() > 0)
-	{
-	  unsigned int count3(R.fine_n3());
-
-	  const double st1(R.step1());
-	  const double st2(R.step2());
-	  const double st3(R.dx3());
-
-	  for (unsigned int i=0; i <= i_max; ++i)
-	    for (unsigned int j=0; j <= j_max; ++j)
-	      {
-		std::list<edge3d> data3;
-		const P init(R.corner1() + (i*st1)*E_1 + (j*st2)*E_2);
-
-		for (unsigned int k=0; k < count3; ++k)
-		  {
-		    P curr(map(init + P(0,0,k*st3)));
-		    P next(map(init + P(0,0,(k+1)*st3)));
-		    data3.push_back(edge3d(curr, next, is_valid(curr, next)));
-		  }
-
-		// close path if initial and terminal points coincide
-		bool closed(is_curve &&
-			    map(init) == map(init + P(0,0,count3*st3)));
-
-		path_data path3(data3, closed && filling, filling);
-		path3.draw();
-	      }
-	}
-    }; // end of plot_map_dom
-
-  // plot over a list of domains
-  template<class T> void plot_map_domlist(const T& map, const domain_list& R)
-    {
-      for (dolci p=R.m_list.begin(); p != R.m_list.end(); ++p)
-	plot_map_dom(map, *p);
-    }
-
-  // paths
-  template<class T>void plot_function(const T& f, double t1, double t2,
-				      unsigned int n)
-    {
-      plot_map_dom(f, domain(t1, t2, n));
-    }
-
-
-  // Solutions of ODE systems
-  template<class VF> void euler_plot(const VF& field, P curr, 
-				     double t_min, double t_max, 
-				     unsigned int num_pts)
-  {
-    std::list<edge3d> data;
-
-    const double dt(t_max/(num_pts*EPIX_ITERATIONS));
-    const double dseek(t_min/(num_pts*EPIX_ITERATIONS));
-
-    if (fabs(t_min/num_pts) > EPIX_EPSILON) // seek beginning of path
-      for (unsigned int i=0; i <= num_pts*EPIX_ITERATIONS; ++i)
-	curr += dseek*field(curr);
-
-    // curr = "start, flowed by t_min"
-    P next(curr);
-
-    for (unsigned int i=0; i <= num_pts*EPIX_ITERATIONS; ++i)
-      {
-	next += dt*field(next);  // Euler's method
-
-	if (i%EPIX_ITERATIONS == 0)
-	  {
-	    data.push_back(edge3d(curr, next, is_valid(curr, next)));
-	    curr = next;
-	  }
-      }
-
-    path_data temp(data, false, false);
-
-    temp.draw();
-  } // end of euler_plot
-
-
-  // flow x0 under field for specified time; pass x0 by value
-  template<class VF> P euler_flow(const VF& field, P x0,
-				  double t_max, unsigned int num_pts=0)
-  {
-    if (num_pts == 0) // use "sensible" default; hardwired constant 4
-      num_pts = 4*(1 + (unsigned int)ceil(fabs(t_max)));
-
-    const double dt(t_max/(num_pts*EPIX_ITERATIONS));
-
-    for (unsigned int i=0; i <= num_pts*EPIX_ITERATIONS; ++i)
-      x0 += dt*field(x0);
-
-    return x0;
-  }
-} // end of namespace
-
-#endif /* EPIX_PLOT_ALGO */
diff --git a/graphics/epix/plots.cc b/graphics/epix/plots.cc
deleted file mode 100644
index 5f619dbe40..0000000000
--- a/graphics/epix/plots.cc
+++ /dev/null
@@ -1,613 +0,0 @@
-/* 
- * plots.cc: Plotting functions
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.2.0-2
- * Last Change: September 26, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include "constants.h"
-#include "errors.h"
-
-#include "triples.h"
-#include "functions.h"
-
-#include "camera.h"
-#include "map.h"
-#include "domain.h"
-
-#include "path.h"
-
-#include "markers.h"
-#include "curves.h"
-
-#include "deriv.h"
-#include "plot_algorithms.h"
-#include "plots.h"
-
-namespace ePiX {
-
-  typedef std::list<domain>::const_iterator dolci;
-
-  // f:R -> R^3
-  void plot(P f(double), double t_min, double t_max, unsigned int num_pts)
-  {
-    plot_map_dom(path_map(f), domain(t_min, t_max, num_pts));
-  }
-
-  // f:R -> R x R x R
-  void plot(double f1(double), double f2(double), double f3(double),
-	    double t_min, double t_max, unsigned int num_pts)
-  {
-    plot_map_dom(column_1var(f1,f2,f3), domain(t_min, t_max, num_pts));
-  }
-
-  // f:R -> R
-  void plot(double f(double), double t_min, double t_max, unsigned int num_pts)
-  {
-    plot(id, f, zero, t_min, t_max, num_pts); 
-  }
-
-  void plot(const Deriv& f, double t_min, double t_max, unsigned int num_pts)
-  { 
-    plot_map_dom(f, domain(t_min, t_max, num_pts));
-  }
-
-  void plot(const Integral& f, double t_min, double t_max,
-	    unsigned int num_pts)
-  {
-    plot_map_dom(f, domain(t_min, t_max, num_pts));
-  }
-
-  // f: R -> R x R
-  void plot(double f1(double), double f2(double), 
-	    double t_min, double t_max, unsigned int num_pts)
-  {
-    plot(f1, f2, zero, t_min, t_max, num_pts); 
-  }
-
-  void polarplot (double f(double), double t_min, double t_max,
-		  unsigned int num_pts)
-  {
-    plot_map_dom(column_1var(f, id, zero, cylindrical), 
-		 domain(t_min, t_max, num_pts));
-  }
-  
-  // surfaces
-  // f:R^2 -> R x R x R
-  void plot(double f1(double u1, double u2),
-	    double f2(double u1, double u2),
-	    double f3(double u1, double u2), 
-	    const P& min, const P& max, const mesh& coarse, const mesh& fine)
-  {
-    plot_map_dom(column_2var(f1,f2,f3), domain(min, max, coarse, fine));
-  }
-
-  void plot(double f1(double u1, double u2),
-	    double f2(double u1, double u2),
-	    double f3(double u1, double u2), 
-	    const domain& R)
-  {
-    plot_map_dom(column_2var(f1,f2,f3), R);
-  }
-
-  // f:R^2 -> R
-  void plot(double f(double u1, double u2),
-	    const P& p1, const P& p2, const mesh& coarse, const mesh& fine)
-  {
-    plot(proj1, proj2, f, p1, p2, coarse, fine);
-  }
-
-  // f:R^2 -> R^3
-  void plot(P f(double u1, double u2), const domain& R)
-  {
-    plot_map_dom(surface_map(f), R);
-  }
-
-  void plot(P f(double u1, double u2), const domain_list& R)
-  {
-    surface_map phi(f);
-
-    for (dolci p=R.m_list.begin(); p != R.m_list.end(); ++p)
-      plot_map_dom(phi, *p);
-  }
-
-
-  // f:R^3 -> R^3
-  void plot(P f(double, double, double), const domain& R)
-  {
-    plot_map_dom(space_map(f), R);
-  }
-
-  void plot(P f(double, double, double), const domain_list& R)
-  {
-    space_map phi(f);
-
-    for (dolci p=R.m_list.begin(); p != R.m_list.end(); ++p)
-      plot_map_dom(phi, *p);
-  }
-
-
-  // Derivatives and integrals
-  void plot_deriv(double f(double t), double a, double b,
-		  unsigned int num_pts)
-  {
-    plot_function(Deriv(f), a, b, num_pts);
-  }
-
-  void plot_int(double f(double), double a, double b,
-		unsigned int num_pts)
-  {
-    plot_function(Integral(f, a), a, b, num_pts);
-  }
-
-  void plot_int(double f(double), double x0, double a, double b,
-		unsigned int num_pts)
-  {
-    plot_function(Integral(f, x0), a, b, num_pts);
-  }
-
-  // tuples of real-valued plot arguments
-  void tan_line(double f1(double t), double f2(double t), double t0)
-  {
-    Line(P(f1(t0), f2(t0)),
-	 P(f1(t0), f2(t0)) + P(deriv(f1, t0), deriv(f2, t0)));
-  }	      
-
-  void tan_line(double f(double t), double t0)
-  {
-    Line(P(t0, f(t0)), P(t0, f(t0)) + P(1, deriv(f, t0)));
-  }
-
-  void envelope(double f1(double t), double f2(double t), 
-		double t_min, double t_max, unsigned int num_pts)
-  {
-    const double step((t_max - t_min)/num_pts);
-    double t(t_min);
-
-    for (unsigned int i=0; i <= num_pts; ++i, t += step)
-      Line(P(f1(t), f2(t)),
-	   P(f1(t), f2(t)) + P(deriv(f1, t), deriv(f2, t)));
-  }	      
-
-  void envelope(double f(double t), double t_min, double t_max,
-		unsigned int num_pts)
-  {
-    const double step((t_max - t_min)/num_pts);
-    double t(t_min);
-
-    for (unsigned int i=0; i <= num_pts; ++i, t += step)
-      Line(P(t, f(t)), P(t, f(t)) + P(1, deriv(f, t)));
-  }	      
-
-  // P-valued plot argument
-  void tan_line(P f(double t), double t0)
-  {
-    Line(f(t0), f(t0) + deriv(f, t0));
-  }
-
-  void envelope(P f(double t), double t_min, double t_max, 
-		unsigned int num_pts)
-  {
-    const double step((t_max - t_min)/num_pts);
-    double t(t_min);
-
-    for (unsigned int i=0; i <= num_pts; ++i, t += step)
-      Line(f(t), f(t) + deriv(f, t));
-  }	      
-
-  // Tangent field along parametrized path
-  void tan_field(double f1(double), double f2(double), double t_min,
-		 double t_max, unsigned int num_pts)
-  {
-    const double step((t_max - t_min)/num_pts);
-    double t(t_min);
-
-    for (unsigned int i=0; i <= num_pts; ++i, t += step)
-      arrow(P(f1(t), f2(t)), P(f1(t), f2(t)) +
-	    step*P(deriv(f1, t), deriv(f2, t)));
-  }
-
-  // P-valued plot argument
-  void tan_field(P f(double), double t_min, double t_max,
-		 unsigned int num_pts)
-  {
-    const double step((t_max - t_min)/num_pts);
-    double t(t_min);
-
-    for (unsigned int i=0; i <= num_pts; ++i, t += step)
-      arrow(f(t), f(t) + step*deriv(f, t));
-  }
-
-  // Slope, dart, and vector fields
-
-  // utility functions
-  // vector, dart, and slope fields
-  void field_element(const P& tail, const P& head, epix_field_type TYPE,
-		     double head_scale=1.0)
-  {
-    switch(TYPE) {
-
-    case VECTOR:
-      arrow(tail, head, head_scale);
-      break;
-
-    case DART:
-      dart(tail, head);
-      break;
-
-    case SLOPE:
-      line(tail, head, 0, 1);
-      break;
-
-    default:
-      ; // do nothing
-    } // end of switch(TYPE)
-  } // end of field_element
-
-
-  void draw_field(P F(double, double, double), P p, P q,
-		  unsigned int n1, unsigned int n2, 
-		  epix_field_type TYPE, double scale)
-  {
-    P diagonal(q-p);
-    int perp_count(0);
-    P jump1, jump2;
-
-    if (fabs(diagonal|E_1) < EPIX_EPSILON)
-      {
-        ++perp_count;
-        jump1 = E_2&diagonal;
-        jump2 = E_3&diagonal;
-
-      }
-    if (fabs(diagonal|E_2) < EPIX_EPSILON)
-      {
-        ++perp_count;
-        jump1 = E_3&diagonal;
-        jump2 = E_1&diagonal;
-      }
-    if (fabs(diagonal|E_3) < EPIX_EPSILON)
-      {
-        ++perp_count;
-        jump1 = E_1&diagonal;
-        jump2 = E_2&diagonal;
-      }
-
-    if (perp_count == 0)
-      {
-	epix_warning("Projecting corners of vector field plot");
-        jump1 = E_1&diagonal;
-        jump2 = E_2&diagonal;
-	p %= E_3; // project corners to (x1, x2)-plane
-	q %= E_3;
-      }
-
-    // grid line spacing
-    jump1 *= 1.0/n1;
-    jump2 *= 1.0/n2;
-
-    const double d1(norm(jump1));
-    const double d2(norm(jump2));
-
-    for (unsigned int i=0; i <= n1; ++i)
-      for (unsigned int j=0; j <= n2; ++j)
-	{
-	  P base(p + (i*jump1 + j*jump2));
-	  P vect(F(base.x1(), base.x2(), base.x3()));
-
-	  if (norm(camera(base+vect) - camera(base)) < EPIX_EPSILON)
-	    marker(base, BBOX);
-
-	  else if (TYPE == VECTOR)
-	    field_element(base, base + vect, VECTOR, scale);
-
-	  else
-	    {
-	      // N.B. May not work if page export bolloxes aspect ratio
-	      double object_len(norm(camera(base+vect)-camera(base)));
-	      pair dX(pair(d1, d2));
-
-	      // Hardwired constant 0.4: Segment 80% of shorter grid length
-	      double minimum((dX.x1() > dX.x2()) ? 0.4*dX.x2() : 0.4*dX.x1());
-
-	      if ( object_len > EPIX_EPSILON) // not projected to zero
-		vect *= minimum/object_len;
-
-	      // scale affects length of element, not head size
-	      field_element(base - scale*vect, base + scale*vect, TYPE);
-	    }
-	}
-  } // end of draw_field F(x, y, z)
-
-
-  void draw_field(P F(double, double), P p, P q,
-		  unsigned int n1, unsigned int n2, 
-		  epix_field_type TYPE, double scale)
-  {
-    P diagonal(q-p);
-    P jump1(E_1&diagonal);
-    P jump2(E_2&diagonal);
-    p %= E_3; // project corners to (x1, x2)-plane
-    q %= E_3;
-
-    // grid line spacing
-    jump1 *= 1.0/n1;
-    jump2 *= 1.0/n2;
-
-    const double d1(norm(jump1));
-    const double d2(norm(jump2));
-
-    for (unsigned int i=0; i <= n1; ++i)
-      for (unsigned int j=0; j <= n2; ++j)
-	{
-	  P base(p + (i*jump1 + j*jump2));
-	  P vect(F(base.x1(), base.x2()));
-
-	  if (norm(camera(base+vect) - camera(base)) < EPIX_EPSILON)
-	    marker(base, BBOX);
-
-	  // scale affects head size
-	  else if (TYPE == VECTOR)
-	    field_element(base, base + vect, VECTOR, scale);
-
-	  else
-	    {
-	      // see caution above
-	      double object_len(norm(camera(base+vect)-camera(base)));
-	      pair dX(pair(d1, d2));
-	      // Hardwired constant 0.4: Segment 80% of shorter grid length
-	      double minimum((dX.x1() > dX.x2()) ? 0.4*dX.x2() : 0.4*dX.x1());
-	      if ( object_len > EPIX_EPSILON) // not projected to zero
-		vect *= minimum/object_len;
-
-	      // scale affects length of element, not head size
-	      field_element(base - scale*vect, base + scale*vect, TYPE);
-	    }
-	}
-  } // end of draw_field F(x, y)
-
-
-  // planar fields
-  void slope_field(P F(double, double), const P& p, const P& q,
-		   unsigned int n1, unsigned int n2, double scale)
-  {
-    draw_field(F, p, q, n1, n2, SLOPE, scale);
-  }
-
-  void dart_field(P F(double, double), const P& p, const P& q,
-		  unsigned int n1, unsigned int n2, double scale)
-  {
-    draw_field(F, p, q, n1, n2, DART, scale);
-  }
-
-  void vector_field(P F(double, double), const P& p, const P& q,
-		    unsigned int n1, unsigned int n2, double scale)
-  {
-    draw_field(F, p, q, n1, n2, VECTOR, scale);
-  }
-
-  void  slope_field(P F(double, double), const domain& R, double scale)
-  {
-    draw_field(F, R.corner1(), R.corner2(),
-	       R.coarse_n1(), R.coarse_n2(),
-	       SLOPE, scale);
-  }
-
-  void   dart_field(P F(double, double), const domain& R, double scale)
-  {
-    draw_field(F, R.corner1(), R.corner2(),
-	       R.coarse_n1(), R.coarse_n2(), 
-	       DART, scale);
-  }
-
-  void vector_field(P F(double, double), const domain& R, double scale)
-  {
-    draw_field(F, R.corner1(), R.corner2(),
-	       R.coarse_n1(), R.coarse_n2(), 
-	       VECTOR, scale);
-  }
-
-  // spatial fields
-  void  slope_field(P F(double, double, double), const P& p, const P& q,
-		    unsigned int n1, unsigned int n2, double scale)
-  {
-    draw_field(F, p, q, n1, n2, SLOPE, scale);
-  }
-
-  void   dart_field(P F(double, double, double), const P& p, const P& q,
-		    unsigned int n1, unsigned int n2, double scale)
-  {
-    draw_field(F, p, q, n1, n2, DART, scale);
-  }
-
-  void vector_field(P F(double, double, double), const P& p, const P& q,
-		    unsigned int n1, unsigned int n2, double scale)
-  {
-    draw_field(F, p, q, n1, n2, VECTOR, scale);
-  }
-
-  // spatial fields over a domain
-  void  slope_field(P F(double, double, double), const domain& R,
-		    double scale)
-  {
-    P p(R.corner1()), q(R.corner2());
-    double height(q.x3() - p.x3());
-    q -= height*E_3; // p.x3() == q.x3()
-
-    // horizontal/vertical subdivisions
-    unsigned int i_max(R.coarse_n1()), j_max(R.coarse_n2());
-    unsigned int k_max((R.dx3() > 0) ? R.coarse_n3() : 0);
-    for (unsigned int k = 0; k <= k_max; ++k)
-      draw_field(F, p + (k*R.step3())*E_3, q + (k*R.step3())*E_3,
-		 i_max, j_max, SLOPE, scale);
-  }
-
-  void   dart_field(P F(double, double, double), const domain& R,
-		    double scale)
-  {
-    P p(R.corner1()), q(R.corner2());
-    double height(q.x3() - p.x3());
-    q -= height*E_3; // p.x3() == q.x3()
-
-    unsigned int i_max(R.coarse_n1()), j_max(R.coarse_n2());
-    unsigned int k_max((R.dx3() > 0) ? R.coarse_n3() : 0);
-
-    for (unsigned int k = 0; k <= k_max; ++k)
-      draw_field(F, p + (k*R.step3())*E_3, q + (k*R.step3())*E_3,
-		 i_max, j_max, DART, scale);
-  }
-
-  void vector_field(P F(double, double, double), const domain& R,
-		    double scale)
-  {
-    P p(R.corner1()), q(R.corner2());
-    double height(q.x3() - p.x3());
-    q -= height*E_3; // p.x3() == q.x3()
-
-    unsigned int i_max(R.coarse_n1()), j_max(R.coarse_n2());
-    unsigned int k_max((R.dx3() > 0) ? R.coarse_n3() : 0);
-
-    for (unsigned int k = 0; k <= k_max; ++k)
-      draw_field(F, p + (k*R.step3())*E_3, q + (k*R.step3())*E_3,
-		 i_max, j_max, VECTOR, scale);
-  }
-
-  // Solutions of ODE systems
-  // start at time 0
-  void ode_plot (P F(double, double), const P& start,
-		 double t_max, unsigned int n)
-  {
-    euler_plot(surface_map(F), start, 0, t_max, n);
-  }
-
-  void ode_plot (P F(double, double, double), const P& start,
-		 double t_max, unsigned int num_pts)
-  {
-    euler_plot(space_map(F), start, 0, t_max, num_pts);
-  }
-
-  // arbitrary start time
-  void ode_plot (P F(double, double), const P& start, 
-		 double t_min, double t_max, unsigned int num_pts)
-  {
-    euler_plot(surface_map(F), start, t_min, t_max, num_pts);
-  }
-
-  void ode_plot (P F(double, double, double), const P& start, 
-		 double t_min, double t_max, unsigned int num_pts)
-  {
-    euler_plot(space_map(F), start, t_min, t_max, num_pts);
-  }
-
-
-  // flow x0 under field for specified time
-  P flow (P F(double, double), const P& start, double t_max, 
-	  unsigned int n)
-  {
-    return euler_flow(surface_map(F), start, t_max, n);
-  }
-
-  P flow (P F(double, double, double), const P& start, double t_max,
-	  unsigned int n)
-  {
-    return euler_flow(space_map(F), start, t_max, n);
-  }
-
-
-  void riemann_sum(double f(double), double a, double b,
-		   unsigned int n, epix_integral_type TYPE)
-  {
-    const double dx((b-a)/n);
-
-    for (unsigned int i=0; i < n; ++i)
-      {
-	double x(a + i*dx);
-
-	switch (TYPE) {
-
-	case LEFT:
-	  rect(P(x, f(x)), P(x+dx,0));
-	  break;
-
-	case RIGHT:
-	  rect(P(x, 0), P(x+dx, f(x+dx)));
-	  break;
-
-	case UPPER:
-	  rect(P(x, 0), P(x+dx, sup(f, x, x+dx)));
-	  break;
-
-	case LOWER:
-	  rect(P(x, 0), P(x+dx, inf(f, x, x+dx)));
-	  break;
-
-	case TRAP:
-	  quad(P(x, 0), P(x+dx, 0), P(x+dx, f(x+dx)), P(x, f(x)));
-	  break;
-
-	case MIDPT:
-	  rect(P(x, 0), P(x+dx, f(x+0.5*dx)));
-	  break;
-
-	default:
-	  ;
-
-	} // end of switch(TYPE)
-      }
-  } // end of riemann_sum()
-
-
-  // Jay Belanger's shaded plotting functions -- December 1, 2002
-  // Re-implemented using paths, July 16, 2004
-  //        "       for Version 1.2, June 2007
-  void shadeplot(double f1(double), double f2(double), 
-		 double t_min, double t_max, unsigned int num_pts)
-  {
-    // build contour
-    path boundary(f1, t_min, t_max, num_pts);
-    path graph2(f2, t_min, t_max, num_pts);
-
-    path right_edge(P(t_max, f1(t_max)), P(t_max, f2(t_max)));
-    path  left_edge(P(t_min, f2(t_min)), P(t_min, f1(t_min)));
-
-    boundary += right_edge;
-    boundary -= graph2;
-    boundary += left_edge;
-
-    boundary.close().fill();
-    boundary.draw();
-  } // end of shadeplot
-
-  void shadeplot(double f(double), double t_min, double t_max,
-		 unsigned int num_pts)
-  {
-    shadeplot(f, zero, t_min, t_max, num_pts);
-  }
-} // end of namespace
diff --git a/graphics/epix/plots.h b/graphics/epix/plots.h
deleted file mode 100644
index 05069c838b..0000000000
--- a/graphics/epix/plots.h
+++ /dev/null
@@ -1,206 +0,0 @@
-/*
- * plots.h -- parametrized plotting algorithms
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Andrew D. Hwang   <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- *
- * Version 1.0.23
- * Last Change: January 13, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#ifndef EPIX_PLOTS
-#define EPIX_PLOTS
-
-#include "enums.h"
-
-namespace ePiX {
-
-  class domain;
-  class domain_list;
-  class Deriv;
-  class Integral;
-  class P;
-
-  //// paths ////
-  // f:R -> R^3
-  void plot (P f(double), double t_min, double t_max, unsigned int n);
-
-  // f:R -> R x R x R
-  void plot (double f1(double), double f2(double), double f3(double),
-	     double t_min, double t_max, unsigned int n);
-
-  // f:R -> R
-  void plot (double f(double), double t_min, double t_max, unsigned int n);
-  void plot (const Deriv&, double t_min, double t_max, unsigned int n);
-  void plot (const Integral&, double t_min, double t_max, unsigned int n);
-
-  // f: R -> R x R
-  void plot (double f1(double), double f2(double), 
-	     double t_min, double t_max, unsigned int n);
-
-  void polarplot (double f(double), double t_min, double t_max, unsigned int);
-
-  //// surfaces ////
-  // f:R^2 -> R x R x R
-  void plot(double f1(double u1, double u2),
-	    double f2(double u1, double u2),
-	    double f3(double u1, double u2), 
-	    const P& min, const P& max, const mesh& coarse, const mesh& fine);
-
-  void plot(double f1(double u1, double u2),
-	    double f2(double u1, double u2),
-	    double f3(double u1, double u2), 
-	    const domain& R);
-
-  // f:R^2 -> R
-  void plot(double f(double u1, double u2),
-	    const P& p1, const P& p2, const mesh& coarse, const mesh& fine);
-
-  // f:R^2 -> R^3
-  void plot(P f(double, double), const domain&);
-  void plot(P f(double, double), const domain_list&);
-
-  // f:R^3 -> R^3
-  void plot(P f(double, double, double), const domain&);
-  void plot(P f(double, double, double), const domain_list&);
-
-
-  // Derivatives and integrals
-  void plot_deriv(double f(double), double a, double b, unsigned int n);
-
-  void plot_int(double f(double), double a, double b, unsigned int n);
-
-  void plot_int(double f(double), double x0, double a, double b, unsigned int);
-
-  void tan_line(double f1(double), double f2(double), double t0);
-  void tan_line(double f(double), double t0);
-  void tan_line(P f(double), double t0);
-
-  void envelope(double f1(double), double f2(double),
-		double, double, unsigned int);
-  void envelope(double f(double), double, double, unsigned int);
-  void envelope(P f(double), double, double, unsigned int);
-
-  void tan_field(double f1(double), double f2(double), double, double,
-		 unsigned int);
-  void tan_field(P f(double), double, double, unsigned int);
-
-
-  // Slope, dart, and vector fields
-  // For slope and dart fields, the optional scale argument affects the
-  // (constant) drawn length of field elements. For vector fields, elements
-  // are drawn at true length, and "scale" affects the arrowhead size.
-
-  // planar fields
-  void  slope_field(P F(double, double), const P& p, const P& q,
-		    unsigned int, unsigned int, double scale=1.0);
-  void   dart_field(P F(double, double), const P& p, const P& q,
-		    unsigned int, unsigned int, double scale=1.0);
-  void vector_field(P F(double, double), const P& p, const P& q,
-		    unsigned int, unsigned int, double scale=1.0);
-
-  void  slope_field(P F(double, double), const domain& R,
-		    double scale=1.0);
-  void   dart_field(P F(double, double), const domain& R,
-		    double scale=1.0);
-  void vector_field(P F(double, double), const domain& R,
-		    double scale=1.0);
-
-  // spatial fields
-  void  slope_field(P F(double, double, double), const P&, const P&,
-		    unsigned int, unsigned int, double scale=1.0);
-  void   dart_field(P F(double, double, double), const P&, const P&,
-		    unsigned int, unsigned int, double scale=1.0);
-  void vector_field(P F(double, double, double), const P&, const P&,
-		    unsigned int, unsigned int, double scale=1.0);
-
-  // spatial fields over a (3-D) domain
-  void  slope_field(P F(double, double, double), const domain&,
-		    double scale=1.0);
-  void   dart_field(P F(double, double, double), const domain&,
-		    double scale=1.0);
-  void vector_field(P F(double, double, double), const domain&,
-		    double scale=1.0);
-
-
-  // Solutions of ODE systems
-
-  // start at time 0
-  void ode_plot (P F(double, double),
-		 const P& start, double t_max, unsigned int);
-
-  void ode_plot (P F(double, double, double),
-		 const P& start, double t_max, unsigned int);
-
-  // arbitrary start time
-  void ode_plot (P F(double, double),
-		 const P& start, double t_min, double t_max, unsigned int);
-
-  void ode_plot (P F(double, double, double),
-		 const P& start, double t_min, double t_max, unsigned int);
-
-  // flow x0 under field for specified time
-  P flow (P F(double, double), const P& start, double t_max, unsigned int n=0);
-  P flow (P F(double, double, double),
-	  const P& start, double t_max, unsigned int n = 0);
-
-  void riemann_sum(double f(double), double a, double b,
-		   unsigned int n, epix_integral_type TYPE);
-
-
-  // Jay Belanger's shaded plot functions -- December 1, 2002
-  void shadeplot(double f1(double), double f2(double), double, double,
-		 unsigned int);
-  void shadeplot(double f(double), double t_min, double t_max, unsigned int);
-
-  void blackplot(double f1(double), double f2(double), 
-		 double t_min, double t_max, unsigned int);
-
-  void blackplot(double f(double), double t_min, double t_max, unsigned int);
-
-  void whiteplot(double f1(double), double f2(double), 
-		 double t_min, double t_max, unsigned int);
-
-  void whiteplot(double f(double), double t_min, double t_max, unsigned int);
-
-
-  // wiremesh surface plotting
-  void plot(P Phi(double, double),
-	    const P&, const P&, const mesh& N, const mesh& num_pts);
-
-  /*
-  void clipplot(P Phi(double, double),
-	    const P&, const P&, const mesh& N, const mesh& num_pts);
-
-  void cropplot(P Phi(double, double),
-		const P&, const P&, const mesh& N, const mesh& num_pts);
-  */
-
-} // end of namespace
-
-#endif /* EPIX_PLOTS */
diff --git a/graphics/epix/pst.cc b/graphics/epix/pst.cc
deleted file mode 100644
index c10c6ec08b..0000000000
--- a/graphics/epix/pst.cc
+++ /dev/null
@@ -1,359 +0,0 @@
-/*
- * pst.cc -- ePiX's pstricks output format
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.20
- * Last Change: September 19, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
- 
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#include <list>
-
-#include <string>
-#include <sstream>
-
-#include <set>
-
-#include "constants.h"
-
-#include "functions.h"
-
-#include "pairs.h"
-#include "edge_data.h"
-
-#include "Color.h"
-
-#include "path_style.h"
-#include "pen_data.h"
-
-#include "format.h"
-#include "pst.h"
-
-namespace ePiX {
-
-  pst::pst()
-    : m_fill(Neutral()), m_line(Black()), m_base(Neutral()),
-      m_lwidth(PLAIN_WIDTH), m_bwidth("0pt") { }
-
-  pst* pst::clone() const
-  {
-    return new pst(*this);
-  }
-
-  std::string pst::print_fill(const std::list<edge2d>& edges,
-			      const pair& offset,
-			      const Color& fc,
-			      const pen_data& line,
-			      const std::string& len) const
-  {
-    std::stringstream obuf;
-
-    // compute attribute string
-    std::string attribs("[fillstyle=");
-
-    if (fc.is_unset())
-      attribs += "none";
-    else
-      attribs += "solid";
-
-    attribs += "]";
-
-    obuf << set_fill_state(fc) << set_pen_state(line); // side effects
-    obuf << print_paths(edges, offset, attribs, len);
-
-    return obuf.str();
-  }
-
-
-  std::string pst::print_line(const std::list<edge2d>& edges,
-			      const pair& offset,
-			      const pen_data& line,
-			      const pen_data& base,
-			      const path_state& style,
-			      const std::string& len) const
-  {
-    std::stringstream value, obuf;
-
-    obuf << set_pen_state(line);
-
-    // update base
-    m_base = base.color();
-    m_bwidth = base.width();
-
-    std::string attribs;
-
-    // Generate string to pass as third argument to print_paths if need border
-    if (m_lwidth < m_bwidth && !m_base.is_unset())
-      {
-	length tmp_b(m_bwidth), tmp_l(m_lwidth);
-	tmp_b += (tmp_l *= -1);
-	tmp_b *= 0.5;
-
-	std::stringstream bordbuf;
-	bordbuf << "[border=" << print(tmp_b)
-		<< ",bordercolor=" << m_base.name() << "]";
-
-	attribs = bordbuf.str();
-      }
-
-    if (style.is_solid())
-      obuf << print_paths(edges, offset, attribs, len);
-
-    else // not solid
-      {
-	// Use base to draw solid underlayer, line to draw top layer.
-	// Attempt to adjust PST pen alignment; m_bwidth too large.
-	if (m_lwidth < m_bwidth && !base.color().is_unset())
-	  obuf << set_pen_state(pen_data(base.color(),
-					 0.5*(m_bwidth + m_lwidth)))
-	       << print_paths(edges, offset, attribs, len);
-
-	obuf << format::print_line(edges, offset, line, style, "", len);
-      }
-
-    return obuf.str();
-  }
-
-
-  std::string pst::print_color(const std::string& model,
-			       const std::string& name,
-			       double d1, double d2,
-			       double d3) const
-  {
-    // PSTricks declaration
-    std::stringstream obuf;
-    obuf << "\\new" << model;
-    if (model == "cmy")
-      obuf << "k";
-
-    obuf << "color{" << name << "}";
-
-    if (model == "cmy")
-      {
-	double bk(min(min(d1,d2),d3));
-
-	obuf << "{" 
-	     << d1-bk << " " << d2-bk << " " << d3-bk << " " << bk
-	     << "}%"  << std::endl;
-      }
-
-    else
-      obuf << "{"
-	   << d1 << " " << d2 << " " << d3
-	   << "}%" << std::endl;
-
-    return obuf.str();
-  }
-
-  std::string pst::print_color(const std::string& model,
-			       const std::string& name,
-			       double d1, double d2,
-			       double d3, double d4) const
-  {
-    // model presumably "cmyk"
-    std::stringstream obuf;
-    obuf << "\\newcmykcolor{" << name << "}{"
-	 << d1 << " " << d2 << " " << d3 << " " << d4 << "}%"
-	 << std::endl;
-
-    return obuf.str();
-  }
-
-
-  std::string pst::print_comment(const std::string& msg) const
-  {
-    std::stringstream obuf;
-    obuf << "%% " << msg << std::endl;
-
-    return obuf.str();
-  }
-
-  // verbatim text, %-protected newline
-  std::string pst::print_verbatim(const std::string& msg) const
-  {
-    std::stringstream obuf;
-    obuf << msg << "%" << std::endl;
-
-    return obuf.str();
-  }
-
-  void pst::reset_state() const
-  {
-    m_fill = Neutral();
-    m_line = Neutral();
-    m_base = Neutral();
-
-    m_lwidth = length(0);
-    m_bwidth = length(0);
-  }
-
-
-  //// private member functions ////
-  std::string pst::start_picture(const pair& sz, const pair& offset) const
-  {
-    std::stringstream obuf;
-    obuf << "\\begin{pspicture}"
-	 << format::print(sz) << format::print(-offset) << "%" << std::endl;
-
-    return obuf.str();
-  }
-
-  std::string pst::end_picture() const
-  {
-    std::stringstream obuf;
-    obuf << "\\end{pspicture}%" << std::endl;
-    return obuf.str();
-  }
-
-  std::string pst::set_unitlength(const std::string& len) const
-  {
-    std::stringstream obuf;
-
-    obuf << "\\psset{unit=1" << len
-	 << ",linewidth=" << print(length(PLAIN_WIDTH)) << "}%"
-	 << std::endl;
-
-    return obuf.str();
-  }
-
-
-  std::string pst::usepackages() const
-  {
-    return "usepackages pstricks";
-  }
-
-  std::string pst::start_open_path(const std::string& attribs) const
-  {
-    return "\\psline" + attribs;
-  }
-
-  std::string pst::end_open_path(const std::string& attribs) const
-  {
-    std::stringstream obuf;
-    obuf << std::endl;
-    return obuf.str();
-  }
-
-  std::string pst::start_closed_path(const std::string& attribs) const
-  {
-    return "\\pspolygon" + attribs;
-  }
-
-  std::string pst::end_closed_path(const std::string& attribs) const
-  {
-    std::stringstream obuf;
-    obuf << std::endl;
-    return obuf.str();
-  }
-
-  std::string pst::set_fill_state(const Color& col) const
-  {
-    if (m_fill == col)
-      return "";
-
-    // else
-    m_fill = col;
-
-    std::stringstream obuf;
-    obuf << "\\psset{";
-
-    // filled paths set fillstyle
-    if (m_fill.is_unset())
-      obuf << "fillstyle=none";
-
-    else
-      obuf << "fillcolor=" << m_fill.name();
-
-    obuf << "}%" << std::endl;
-
-    return obuf.str();
-  }
-
-  std::string pst::set_pen_state(const pen_data& pen) const
-  {
-    std::stringstream obuf;
-
-    if (pen.color().is_unset())
-      {
-	m_lwidth=length(0);
-	return "\\psset{linewidth=0pt}";
-      }
-
-    // else
-    bool change_width(m_lwidth != pen.width());
-    bool change_color(m_line != pen.color());
-
-    if (change_width || change_color)
-      {
-	obuf << "\\psset{";
-
-	if (change_width)
-	  {
-	    m_lwidth = pen.width();
-	    obuf << "linewidth=" << m_lwidth.name();
-
-	    if (change_color) // both true, need separator
-	      obuf << ",";
-	  }
-
-	if (change_color)
-	  {
-	    m_line = pen.color();
-	    obuf << "linecolor=" << m_line.name();
-	  }
-
-	obuf << "}%" << std::endl;
-      }
-
-    return obuf.str();
-  }
-
-  // place a LaTeX box of width zero (containing string) at location (pair)
-  std::string pst::put_box(const pair& loc, const std::string& msg) const
-  {
-    std::stringstream obuf;
-    obuf << "\\rput" << print(loc) << "{" << msg << "}" << std::endl;
-
-    return obuf.str();
-  }
-
-  std::string pst::print_circle_marker(const pair& here, double diam,
-				       bool fill, const Color& color,
-				       const std::string& len) const
-  {
-    std::stringstream obuf;
-    obuf << "\\pscircle";
-
-    if (fill)
-      obuf << "*";
-
-    obuf << "[linecolor=" << print(color) << "]" << print(here)
-	 << "{" << 0.5*diam << "}%" << std::endl;
-
-    return obuf.str();
-  }
-} // end of namespace
diff --git a/graphics/epix/pst.h b/graphics/epix/pst.h
deleted file mode 100644
index 342bce9573..0000000000
--- a/graphics/epix/pst.h
+++ /dev/null
@@ -1,124 +0,0 @@
-/*
- * pst.h -- ePiX's pstricks output format
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.15
- * Last Change: September 07, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- *
- *
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#ifndef EPIX_PST
-#define EPIX_PST
-
-#include <string>
-#include <list>
-#include <set>
-
-#include "Color.h"
-#include "length.h"
-
-#include "edge_data.h"
-#include "format.h"
-
-namespace ePiX {
-
-  class path_state;
-  class pen_data;
-
-  class pst : public format {
-  public:
-    pst();
-
-    pst* clone() const;
-
-    std::string print_fill(const std::list<edge2d>& edges,
-			   const pair& offset,
-			   const Color& fill,
-			   const pen_data& line,
-			   const std::string& len) const;
-
-    std::string print_line(const std::list<edge2d>& edges,
-			   const pair& offset,
-			   const pen_data& line,
-			   const pen_data& base,
-			   const path_state& style,
-			   const std::string& len) const;
-
-
-    // model, name, densities
-    std::string print_color(const std::string&, const std::string&,
-			    double, double,
-			    double) const;
-
-    std::string print_color(const std::string&, const std::string&,
-			    double, double,
-			    double, double) const;
-
-
-    // output file comment
-    std::string print_comment(const std::string&) const;
-
-    std::string print_verbatim(const std::string&) const;
-
-    void reset_state() const;
-
-  private:
-    mutable Color m_fill;
-    mutable Color m_line;
-    mutable Color m_base;
-
-    mutable length m_lwidth;
-    mutable length m_bwidth;
-
-    // start, end pspicture, set unit and default linewidth
-    std::string start_picture(const pair&, const pair&) const;
-    std::string end_picture() const;
-
-    std::string set_unitlength(const std::string& len) const;
-
-    std::string usepackages() const;
-
-    // string argument for passing attributes local to this path/loop
-    std::string start_open_path(const std::string&) const;
-    std::string end_open_path(const std::string&) const;
-
-    std::string start_closed_path(const std::string&) const;
-    std::string end_closed_path(const std::string&) const;
-
-    // print declarations to set state of output format
-    std::string set_fill_state(const Color&) const;
-    std::string set_pen_state(const pen_data&) const;
-
-    // place a LaTeX box of width zero (containing string) at location (pair)
-    std::string put_box(const pair&, const std::string&) const;
-
-    std::string print_circle_marker(const pair& here, double diam,
-				    bool fill, const Color& color,
-				    const std::string& len) const;
-  }; // end of class pst
-} // end of namespace
-
-#endif /* EPIX_PST */
diff --git a/graphics/epix/samples/Makefile.am b/graphics/epix/samples/Makefile.am
deleted file mode 100644
index 46aea1a065..0000000000
--- a/graphics/epix/samples/Makefile.am
+++ /dev/null
@@ -1,20 +0,0 @@
-# Makefile.am for ePiX v1.x "samples" directory
-#
-
-XPS := $(wildcard *.xp)
-FLX := $(wildcard *.flx)
-
-CLEANFILES = *~ *.eepic *.eps sample_src.tar sample_src.tar.gz sample-stamp
-
-## Targets ##
-doc_DATA = sample_src.tar.gz
-
-
-# tar up tex, xp, and eepic files
-sample-stamp: $(XPS) $(FLX)
-	touch sample-stamp
-
-sample_src.tar.gz: sample-stamp
-	tar -cf sample_src.tar $(XPS) $(FLX) \
-	README binom.cc lighting.h std_F.cc std_F.h
-	gzip -9 sample_src.tar
diff --git a/graphics/epix/samples/Makefile.in b/graphics/epix/samples/Makefile.in
deleted file mode 100644
index 759cd4259f..0000000000
--- a/graphics/epix/samples/Makefile.in
+++ /dev/null
@@ -1,340 +0,0 @@
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-# This Makefile.in is free software; the Free Software Foundation
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-XPS := $(wildcard *.xp)
-FLX := $(wildcard *.flx)
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-	touch sample-stamp
-
-sample_src.tar.gz: sample-stamp
-	tar -cf sample_src.tar $(XPS) $(FLX) \
-	README binom.cc lighting.h std_F.cc std_F.h
-	gzip -9 sample_src.tar
-# Tell versions [3.59,3.63) of GNU make to not export all variables.
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diff --git a/graphics/epix/samples/README b/graphics/epix/samples/README
deleted file mode 100644
index b51bd10d3c..0000000000
--- a/graphics/epix/samples/README
+++ /dev/null
@@ -1,258 +0,0 @@
-ePiX -- samples/README
-
-Last Change: September 22, 2007
-
-This directory contains sample files. Files with extension ".flx" may
-be compiled like xp files with epix or elaps, or converted to gif or
-mng animations with flix.
-
-
-artifacts.xp
-  Interaction between coarse and fine meshes in shade surface plotting.
-
-binom.cc:
-  Generates pseudo-random data for histogram.xp
-
-bowl.xp:
-  Quasi-realistic colored surface shading.
-
-butterfly.xp:
-  A Thom catastrophe graph.
-
-calculus.xp:
-  Plotting derivatives and definite integrals.
-
-clipping.xp:
-  Clipping, shaded surfaces, and fake transparency.
-
-color_sep.xp:
-  Color separation.
-
-conic.xp:
-  Envelopes and tangent lines; projective equivalence of a parabola
-  with a circle.
-
-contour.xp:
-  Building a path from sub-paths.
-
-coord_tricks.xp:
-  Using page layout to achieve broken axes.
-
-cropplot.xp
-  Graphing functions with singularities.
-
-cube.flx:
-  Stereoscopic (3-D glasses) movie of a rotating cube.
-
-dataplot.xp:
-  Scatter plots, histograms, and page layout.
-
-decorate.xp:
-  Decorated shaded surface (see file for compiling).
-
-demoivre.xp:
-  Loops; a geometric proof of deMoivre's formula.
-
-densityplot.xp:
-  A gray-shaded interference pattern.
-
-dipole.xp:
-  Plotting flow lines and isobars.
-
-denom.xp:
-  Loops and gcd; Thomae's function with discontinuity set Q.
-
-extract.xp:
-  A magnified inset using screen::extract; an unexpected tangent line.
-
-geomsum.xp:
-  Loops and color filling.
-
-golden_rect.xp:
-  Simple use of variables; constructing a golden rectangle.
-
-helicoid.flx:
-  Isometric deformation of a catenoid to a helicoid.
-
-hello.xp:
-  My First Figure, from the manual.
-
-histogram.xp:
-  Histograms of simulated coin tosses (data from binom.cc).
-
-house.flx:
-  Color semantics; sun setting on a simple house.
-
-hyperboloid.xp:
-  Clipping, shaded surfaces; two families of rulings on a hyperboloid.
-
-inverse.xp:
-  Screen affine operations; inverse functions.
-
-koch.xp:
-  The von Koch snowflake fractal.
-
-label_debug.xp:
-  Format debugging tests for labels, draws 32 attribute combinations.
-
-layout2.xp:
-  Page layout; flow lines of a planar vector field.
-  
-layout.xp:
-  Page layout; six views of the square root Riemann surface.
-
-legend.xp:
-  Axes and legends; Taylor polynomials of sin x.
-
-levelset.xp:
-  Clipping and plotting; manual level curves on a saddle.
-
-levelset2.xp:
-  "Advanced" clipping; level bands on a monkey saddle.
-
-levelset3.xp:
-  Clipping and legends; flat-shaded level bands wth matching legend.
-
-lissajous.xp:
-  A Lissajous figure with arrows.
-
-lighting.h: Classes for lighting effects and color-shaded surfaces.
-  (lighting.flx illustrates use.)
-
-line_debug.xp:
-  Format debugging tests for paths, draws 32 attribute combinations.
-
-log.xp:
-  Object hiding with paths and surfaces; the Riemann surface of log.
-
-lorenz.xp:
-  Page layout, ode_plot; the Lorenz attractor and its 3-D vector field.
-
-medians.xp:
-  Euclidean geometry; medians and altitudes of a triangle.
-
-minkowski.xp:
-  A longitudinal slice of Minkowski space R^{2,1}.
-
-mirrorball.flx:
-  The circle class and intersections; 3-D stereographic movie.
-
-newton.xp:
-  Loops; root location by Newton's method.
-
-objects.xp:
-  Simple geometric objects; 2-D landscape.
-
-oscillator.xp:
-  Graphing, user-defined elements, and page layout.
-
-parabola.xp:
-  A basic plot.
-
-pascal.xp:
-  Intersection operators; Pascal's theorem in projective geometry.
-
-pendulum.flx:
-  Phase diagram of an undamped pendulum.
-
-planes.xp:
-  Manipulating objects, clipping; a stack of plane sections of a cube.
-
-plotting2.xp:
-  Surface plotting in PSTricks; from the manual.
-
-plotting3.xp:
-  Loops and color control; from the manual.
-
-plotting.xp:
-  A basic plot; from the manual.
-
-polar.xp:
-  Polar plotting.
-
-pole.xp:
-  Clipping a plot; the real part of a first-order pole.
-
-polyhedra.xp:
-  Spherical regular polyhedra. Compilation controlled with
-  pre-processor flags, e.g., "epix -DCOLOR -DDODECA polyhedra.xp".
-
-R_demo.xp:
-  Gaussians from the R demo.
-
-riemann.flx:
-  Rotating the Riemann surface of sqrt(z) in R^4.
-
-S2_harmonics.xp:
-  Domain-dependent surface shading (color function depends on two
-  variables), page layout; the spherical harmonic Y_3^0. (Compile with
-  "epix -DY20 S2_harmonics.xp" for Y_2^0.)
-
-saddle.xp:
-  A quadratic saddle using "surface" capabilities.
-
-semicirc.xp:
-  A simple figure using variables and a function for organization.
-
-shadeplot.xp:
-  Shading regions enclosed by graphs; the fundamental theorem of calculus.
-
-slopefield.xp:
-  A slope field and flow lines.
-
-sphere.xp:
-  Plotting curves and latitudes/longitudes; loxodromes.
-
-spherical.xp:
-  Scenery (multiple shaded surfaces); spherical coordinates.
-
-sqrt.xp:
-  Domains and selective plotting; the Riemann surface of sqrt(z).
-
-sqrt2.xp:
-  Domains, selective plotting, and change of style in a single plot.
-
-std_F.cc, std_F.h:
-  Extensively-commented library code for depicting 2-D affine maps.
-
-std_F.xp:
-  Sample file illustrating the use of external libraries. Contains
-  instructions on building a library from std_F.cc.
-
-steiner.flx:
-  Steiner's Roman surface, rotating.
-
-steiner2.flx:
-  Steiner's Roman surface sliced, with slice direction rotating.
-
-surface_shade.xp:
-  Position-dependent surface shading. (Color function depends on three
-  variables.)
-
-symmetries.xp:
-  Affine maps and layout; the symmetry group S_3 acting on a regular
-  hexagon.
-
-tori.xp:
-  Clipping and cropping, page layout.
-
-torus.xp:
-  Domains and selective plotting.
-
-trig.flx:
-  Trigonometric functions.
-
-twisted_cubic.xp:
-  Page layout; a crossed-eyes stereogram of the twisted cubic.
-
-uppersum.xp:
-  Riemann sums.
-
-vfield.xp:
-  3-D vector field plotting.
-
-weierstrass.xp:
-  Loops; a Weierstrass nowhere-differentiable function.
-
-wheel.xp:
-  Page layout; a cycloid at successive times.
diff --git a/graphics/epix/samples/R_demo.xp b/graphics/epix/samples/R_demo.xp
deleted file mode 100644
index 183f74b988..0000000000
--- a/graphics/epix/samples/R_demo.xp
+++ /dev/null
@@ -1,69 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-const double mult(1.0/sqrt(M_PI));
-
-double f(double x)
-{
-  return 0.4*exp(-mult*x*x);
-}
-
-double g(double x)
-{
-  return f(x-3);
-}
-
-double PAD_X(0.4), PAD_Y(0.01);
-
-int main() {
-  picture(P(-3-PAD_X, -PAD_Y), P(8+PAD_X, 0.4+PAD_Y), "5 x 3.5in");
-
-  begin();
-  border();
-
-  legend L;
-  L.border(0);
-
-  fill(Black(0.2));
-  shadeplot(g, 1.96, xmax(), 120);
-  L.fill_item("$P(|Z|>1.96, H_1) = 0.85$");
-
-  fill(Black(0.8));
-  shadeplot(f, xmin(), -1.96, 20);
-  shadeplot(f, 1.96, 4, 40);
-  L.fill_item("$P(|Z|>1.96, H_0) = 0.05$");
-
-  plot(f, xmin(), xmax(), 240);
-  plot(g, xmin(), xmax(), 240);
-
-  font_size("scriptsize");
-  L.draw(P(4,0.35), P(0,0), tr);
-
-  label(P(0, 0.15), P(0,2), "$H_0$: $\\mu_1=\\mu_2$", t);
-  label(P(2, 0.15), P(2,2), "$H_1$: $\\mu_1=\\mu_2+\\delta$", tr);
-
-  font_size("footnotesize");
-  axis Ax(P(-2, ymin()), P(8, ymin()), 5, P(0,-8), b);
-  Ax.align(b).draw();
-
-  label(P(2, ymin()), P(0,-18),
-	"$Z=\\displaystyle\\frac{\\mu_1-\\mu_2}{\\sigma/\\sqrt{\\pi}}$", b);
-
-  degrees();
-  label_angle(90);
-
-#ifdef OLD_GCC
-  axis Ay(P(-3.4, 0), P(xmin(), 0.4), 4, P(-8,0), l);
-#else
-  // may not compile under gcc <= 3.3
-  axis Ay(P(xmin(), 0), P(xmin(), 0.4), 4, P(-8,0), l);
-#endif
-
-  Ay.align(l).draw();
-
-  label(P(xmin(), 0.2), P(-18,0), "Density", l);
-
-  pst_format();
-  end();
-}
diff --git a/graphics/epix/samples/S2_harmonics.xp b/graphics/epix/samples/S2_harmonics.xp
deleted file mode 100644
index d1ed709165..0000000000
--- a/graphics/epix/samples/S2_harmonics.xp
+++ /dev/null
@@ -1,104 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-double P_n(double z)
-{
-#ifdef Y20
-  return 0.5*(3*z*z - 1);
-#else
-  // Y_3^0
-  return 0.5*z*(5*z*z - 3);
-#endif
-}
-
-double rho(double th, double phi)
-{
-  return P_n(Sin(phi));
-}
-
-P color(double x, double y)
-{
-  return P(rho(x,y), 0, -rho(x,y));
-}
-
-P orbital(double u, double v)
-{
-  return sph(fabs(rho(u,v)), u, v);
-}
-
-int main()
-{
-  picture(P(-1,-1), P(1,1.5), "4x5in");
-
-  begin();
-
-  backing(Black());
-
-  set_crop();
-  revolutions();
-  fill();
-
-  // back 3/4
-  domain Bk(P(0.25, -0.25), P(1, 0.25), mesh(24,96), mesh(48,96));
-
-  plain(RGB(1, 0.8, 0.2) *= 0.8);
-
-  camera.at(sph(10, 0.06, 0.05));
-
-  // color-shaded surface
-  surface(orbital, Bk, color);
-
-  // draw boundary with "tube-like" green pen
-  nofill();
-  plain(Green(1.6));
-  base(Green(0.6), "2pt");
-  plot(orbital, Bk.slice1(0.25));
-  plot(orbital, Bk.slice1(1));
-
-  // set color for axes and labels
-  rgb(0.9,0.7,1);
-  base(RGB(0.8, 0, 1), "1pt");
-
-  arrow(P(0,0,0), P(1,0,0));
-  arrow(P(0,0,0), P(0,0.75,0));
-  arrow(P(0,0,0), P(0,0,1.25));
-
-  label(P(1,0,0), P(-2,-2), "$x$", bl);
-  label(P(0,0.75,0), P(4,-2), "$y$", r);
-  label(P(0,0,1.25), P(0,4), "$z$", t);
-
-  // "unset" base pen
-  base(Neutral());
-
-  // inset graph of Legendre polynomial
-  screen graph(P(-1,-1), P(1,1));
-  activate(graph);
-
-  camera.at(P(0,0,10000));
-  plain(Green(0.6));
-  grid(P(-1,-1), P(1,1), 8, 8);
-  bold(Yellow());
-  h_axis(8);
-  v_axis(8);
-
-  bold(Green());
-  plot(P_n, -1, 1, 60);
-
-  font_size("footnotesize");
-  label_color(Green(0.6));
-  label_mask(RGB(1, 0.8,0.2));
-
-#ifdef Y20
-  label(P(0,-1), P(0,-4), "$P(z)=\\frac{1}{2}(3z^2-1)$", b);
-#else
-  // Y30
-  label(P(0,-1), P(0,-4), "$P(z)=\\frac{1}{2}(5z^2-3)$", b);
-#endif
-
-  inset(P(-1,0.875), P(-0.375,1.5));
-  deactivate(graph); // a good habit, but not strictly necessary
-
-  tikz_format();
-  end();
-}
diff --git a/graphics/epix/samples/artifacts.xp b/graphics/epix/samples/artifacts.xp
deleted file mode 100644
index bd20166717..0000000000
--- a/graphics/epix/samples/artifacts.xp
+++ /dev/null
@@ -1,51 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-const double MAX(1);
-
-P F(double u, double v)
-{
-  return sph(1, u, v);
-}
-
-int main()
-{
-  picture(P(0,0),P(5,1), "5 x 1in");
-
-  begin();
-
-  pst_format();
-  domain coarse(P(0,0), P(0.5, 1), mesh(6,12), mesh(60,60));
-  domain fine(P(0,0), P(0.5, 1), mesh(15,30), mesh(60,60));
-
-  revolutions();
-  camera.at(P(5, 4, 3));
-
-  fill(White());
-
-  nofill(); // fill color set -> flat shading
-  screen scr1(P(-1,-1), P(1,1));
-  activate(scr1);
-  surface(F, coarse);
-
-  screen scr2(P(-1,-1), P(1,1));
-  activate(scr2);
-  surface(F, fine);
-
-  fill();
-  screen scr3(P(-1,-1), P(1,1));
-  activate(scr3);
-  surface(F, coarse);
-
-  screen scr4(P(-1,-1), P(1,1));
-  activate(scr4);
-  surface(F, fine);
-
-  inset(scr1, P(0,0), P(1,1));
-  inset(scr2, P(1.25,0), P(2.25,1));
-  inset(scr3, P(2.5,0), P(3.5,1));
-  inset(scr4, P(3.75,0), P(4.75,1));
-
-  end();
-}
diff --git a/graphics/epix/samples/binom.cc b/graphics/epix/samples/binom.cc
deleted file mode 100644
index 1dc068fcd6..0000000000
--- a/graphics/epix/samples/binom.cc
+++ /dev/null
@@ -1,37 +0,0 @@
-#include <iostream>
-#include <cmath>
-// Generate pseudo-random outcomes of tossing a biased coin 100 times.
-// Compile with, e.g.
-//
-//    g++ -o binom binom.cc && ./binom > binom.dat
-
-const int trials=100000; // amount of data to collect
-
-int flip(double wt=0.5) // 0 < wt < 1
-{
-  if (rand() < (1-wt)*RAND_MAX)
-    return 0;
-  else
-    return 1;
-}
-
-void toss(unsigned int tosses, double wt=0.5)
-{
-  int count=0;
-  for (int i=0; i < tosses; ++i)
-    count += flip(wt);
-
-  std::cout << count << "\t";
-}
-
-int main()
-{
-  for (int j=0; j < trials; ++j)
-    {
-      toss(100, 0.05);
-      toss(100, 0.1);
-      toss(100, 0.3);
-      toss(100);
-      std::cout << "\n";
-    }
-}
diff --git a/graphics/epix/samples/bowl.xp b/graphics/epix/samples/bowl.xp
deleted file mode 100644
index fe3921b6db..0000000000
--- a/graphics/epix/samples/bowl.xp
+++ /dev/null
@@ -1,55 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-P f(double u, double v)
-{
-  return u*P(Cos(v), Sin(v), u);
-}
-
-int main()
-{
-  picture(P(-2,-1),P(2,2), "6x4.5in");
-
-  begin();
-
-  backing(Black());
-
-  white();
-  label(P(0, ymax()), P(0,-2), "\\LARGE$z=x^2+y^2$", b);
-
-  revolutions();
-  camera.at(P(3,2,2.5));
-
-  red();
-  polar_grid(1, 8, 36);
-
-  arrow(P(0,0,0), P(1.25,0,0));
-  arrow(P(0,0,0), P(0,1.25,0));
-  label(P(1.25,0,0), P(-2,-2), "$x$", bl);
-  label(P(0,1.25,0), P(2,-1), "$y$", br);
-
-  fill();
-  rgb(1,0.8,0.2);
-  domain R(P(0,0), P(1,1), mesh(12,180), mesh(12,180));
-
-  scenery my(f, R);
-
-  my.draw(1); // cull front-pointing facets
-
-  red();
-  arrow(P(0,0,0), P(0,0,1));
-
-  pen(Blue(1.6), "0.5pt");
-  fill(Blue(1.4));
-  scenery my2(f, R);
-  my2.draw(-1); // cull back-pointing facets
-
-  nofill();
-  bold(Green());
-  base(Green(0.6), "1.5pt");
-  plot(f, R.slice1(1));
-
-  pst_format();
-  end();
-}
diff --git a/graphics/epix/samples/butterfly.xp b/graphics/epix/samples/butterfly.xp
deleted file mode 100644
index 2ec303d780..0000000000
--- a/graphics/epix/samples/butterfly.xp
+++ /dev/null
@@ -1,136 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-const P VIEWPT(20, 0, 8);
-
-const double tmin(2/sqrt(3));
-
-const Color light(Blue(1.6));
-const Color dark(Red(0.8));
-const Color lt_gray(Black(0.2));
-const Color net_color(Yellow(0.1));
-
-void label_tag(P loc, P head, std::string txt, epix_label_posn align)
-{
-  dart(loc, head);
-  masklabel(loc, P(0,0), txt, align);
-}
-
-domain R(P(-2,-2), P(2,2), mesh(20, 20), mesh(40,40));
-domain edge(P(-2,-2), P(2,2), mesh(1,1), mesh(40,40));
-
-// surface
-P Phi(double u, double v)
-{
-  return P(4*v, 0.75*(u*u-2*v)*u, 2*u);
-}
-
-P cubic(double t) { return Phi(t, 1.5*t*t); }
-
-// cubic projections to background planes
-P Phi12(double t) 
-{ 
-  P temp(cubic(t));
-  return P(temp.x1(), temp.x2(), -8); 
-}
-
-P Phi13(double t) 
-{ 
-  P temp(cubic(t));
-  return P(temp.x1(), -8, temp.x3()); 
-}
-
-P Phi23(double t) 
-{ 
-  P temp(cubic(t));
-  return P(-8, temp.x2(), temp.x3()); 
-}
-
-
-int main() {
-  picture(P(-14,-15), P(10,9), "6x6in");
-
-  begin();
-  set_crop();
-  camera.at(VIEWPT);
-
-  // background grids
-  pen(lt_gray);
-  grid(P(-8, -8, -8), P(8, 8, -8), 8,8);
-  grid(P(-8, -8, -8), P(8, -8, 6), 7,8); // n.b. (z,x) divisions
-  grid(P(-8, -8, -8), P(-8, 8, 6), 8,7);
-
-  // background coordinate axes
-  pen(Black());
-  line(P(0, -8, -8), P(0, 8, -8));
-  line(P(-8, 0, -8), P(8, 0, -8));
-
-  line(P(0, -8, -8), P(0, -8, 6));
-  line(P(-8, -8, 0), P(8, -8, 0));
-
-  line(P(-8, 0, -8), P(-8, 0, 6));
-  line(P(-8, -8, 0), P(-8, 8, 0));
-
-  // projections of cubic
-  bold(dark);
-  plot(Phi12, -tmin, tmin, 80);
-  plot(Phi13, -tmin, tmin, 80);
-  plot(Phi23, -tmin, tmin, 80);
-
-  // surface
-  plain(net_color);
-  fill(lt_gray);
-  surface(Phi, R.resize1(-2,0)); // bottom half
-
-  // and cubic curve
-  bold(dark);
-  plot(cubic, -tmin, 0, 80);
-
-  plain(net_color);
-  surface(Phi, R.resize1(0,2)); // top half
-
-  bold(dark);
-  plot(cubic, 0, tmin, 80);
-
-  // surface boundary
-  bold(Yellow());
-  plot(Phi, edge);
-
-  // guide lines to cusp projection
-  plain(light);
-  dashed();
-  line(cubic( tmin), Phi12( tmin));
-  line(cubic(-tmin), Phi12(-tmin));
-
-  /*
-  // guide lines to other projections
-  line(cubic( tmin), Phi13( tmin));
-  line(cubic(-tmin), Phi13(-tmin));
-
-  line(cubic( tmin), Phi23( tmin));
-  line(cubic(-tmin), Phi23(-tmin));
-  */
-
-  // fake transparency
-  plain(dark);
-  plot(Phi12, -tmin, tmin, 20); // cusp
-  //  plot(Phi13, -tmin, tmin, 20);
-  //  plot(Phi23, -tmin, tmin, 20);
-
-  label_color(Black());
-  label(P(8,0,-8), P(0,-4), "$x$", b);
-  label(P(0,8,-8), P(4,0), "$y$", r);
-
-  pen(light);
-  label_border(light, "0.4pt");
-  solid();
-  label_tag(Phi(-2,-2)+P(0,2,6), Phi(-1.75,-1.75),
-	 "$y=\\frac{3}{32}(z^3-2xz)$", t);
-
-  label_tag(cubic(-1)+P(0,2,3), cubic(-1),
-	 "$(x,y,z)=(6t^2, -\\frac{3}{2}t^3, 2t)$", t);
-
-  pst_format();
-  end();
-}
diff --git a/graphics/epix/samples/calculus.xp b/graphics/epix/samples/calculus.xp
deleted file mode 100644
index c5aa0efe0b..0000000000
--- a/graphics/epix/samples/calculus.xp
+++ /dev/null
@@ -1,43 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-double MAX(2*M_PI);
-double f(double t)
-{
-  return t*Sin(t);
-}
-
-int main()
-{
-  picture(P(-MAX,-MAX), P(MAX,MAX), "240x240pt");
-
-  begin();
-
-  // Coordinate axes and labels
-  pen(Black(0.3));
-  grid(8,8);
-
-  font_size("scriptsize");
-  // trigonometric axis labels
-  bottom_axis(4, P(0,-4)).trig().draw_labels();
-  left_axis(4, P(-4,0)).trig().draw_labels();
-
-  legend L;
-  L.item_border(0).border(Red(), 0.4);
-
-  bold(Black());
-  plot(f, xmin(), xmax(), 90);
-  L.path_item("$y=x\\sin x$");
-
-  pen(Green());
-  plot(Deriv(f), xmin(), xmax(), 90);
-  L.path_item("$y=\\frac{d}{dx}(x\\sin x)$");
-
-  pen(Blue());
-  plot(Integral(f, 0), xmin(), xmax(), 90); // definite integral from 0
-  L.path_item("$y=\\int_0^x t\\sin t\\,dt$");
-
-  L.draw(P(0,2*M_PI), P(2,-2), br);
-  end();
-}
diff --git a/graphics/epix/samples/clipping.xp b/graphics/epix/samples/clipping.xp
deleted file mode 100644
index 0df86eb85b..0000000000
--- a/graphics/epix/samples/clipping.xp
+++ /dev/null
@@ -1,233 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-/*
- * This file, a monkey saddle sliced by two vertical planes showing
- * the definition and geometric meaning of partial derivatives,
- * contains a high degree of manual object ordering. Coordinate grids
- * in the back come first. The surface itself is broken into pieces
- * interspersed with axes and cutting planes. Figure parameters
- * (color, the size and fineness of the domain, locations of cutting
- * planes, and camera location) are defined in the preamble. The
- * figure's appearance can then be adjusted visually at leisure to
- * obtain the desired effect.
- *
- * Compile with
- *
- *   epix -DDISSECT clipping.xp
- *
- * to create frames showing stages of the construction.
- */
-
-// Style parameters
-// camera location (in spherical coordinates); must be in first orthant
-const P VIEWPT(sph(4, M_PI/6, M_PI/6));
-
-// colors
-void color_coord()
-{
-  //  fill(RGB(1, 0.9, 0.5));
-  //  plain(RGB(1, 0.5, 0.2));
-  plain(RGB(1, 0.9, 0.7));
-}
-
-void color_axis()
-{
-  rgb(0.8, 0.2, 0.9);
-} 
-
-// graph and mesh
-void color_surf()
-{
-  plain(RGB(1, 0.5, 0));
-  fill(RGB(1, 0.8, 0.2));
-}
-
-// slicing plane and border
-void color_xslice()
-{
-  red();
-}
-
-void fill_xslice()
-{
-  //  black(0.1);
-  rgb(0.8, 0.5, 0.1);
-}
-
-void color_yslice()
-{
-  blue();
-}
-
-void fill_yslice()
-{
-  //  black(0.3);
-  rgb(0.6, 0.3,0);
-}
-
-const int MESH(12); // number of coordinate grid squares
-
-// location of tangency point
-const double x_0(7.0/MESH);
-const double y_0(6.0/MESH);
-const double z_0(0.25); // height of top of slicing planes
-
-const int MAX(1); // maximum coordinate
-
-const double sqrt3(sqrt(3));
-
-// function to be graphed
-P f(double x, double y)
-{
-  return P(x, y, 0.75*y*(y-sqrt3*x)*(y+sqrt3*x));
-}
-
-int main()
-{
-  picture(P(-2,-2), P(2,1.5), "6 x 5.25in");
-
-  begin();
-
-  // "legend"
-  masklabel(P(xmax(), ymax()), P(-2,-2), 
-	"$z=\\displaystyle\\frac{1}{2}(y^3-3x^2y)$", bl);
-
-  font_size("scriptsize");
-  camera.at(VIEWPT);
-  border(Green(0.6), "1pt");
-
-  domain R(P(-MAX,-MAX), P(MAX,MAX),
-	   mesh(4*MESH, 4*MESH), mesh(8*MESH, 8*MESH));
-
-  // coordinate grids
-  color_coord();
-  grid(P(-MAX,-MAX,-MAX), P(-MAX, MAX, MAX), MESH, MESH);
-  grid(P(-MAX,-MAX,-MAX), P( MAX,-MAX, MAX), MESH, MESH);
-  grid(P(-MAX,-MAX,-MAX), P( MAX, MAX,-MAX), MESH, MESH);
-
-#ifdef DISSECT
-  print_pst("clipping01.eepic");
-#endif
-
-  clip_box(P(-2, -2, -1), P(2, 2, 1));
-
-  // back half and front left quarter
-  color_surf();
-  surface(f, R.resize1(-MAX,0));
-#ifdef DISSECT
-  print_pst("clipping02.eepic");
-#endif
-
-  surface(f, R.resize1(0,MAX).resize2(-MAX,0));
-#ifdef DISSECT
-  print_pst("clipping03.eepic");
-#endif
-
-  // coordinate axes
-  color_axis();
-  bold();
-
-  clip_box(P(-2, -2, -1), P(2, 2, 2));
-
-  dart(P(-MAX,0,0), P(0.25+MAX,0,0));
-  dart(P(0,-MAX,0), P(0,0.25+MAX,0));
-  dart(P(0,0,0), P(0,0,0.25+MAX));
-
-  label(P(0.25+MAX,0,0), P(-2,-2), "$x$", bl);
-  label(P(0,0.25+MAX,0), P( 4,-2), "$y$", r);
-  label(P(0,0,0.25+MAX), P( 0, 4), "$z$", t);
-
-#ifdef DISSECT
-  print_pst("clipping04.eepic");
-#endif
-
-  // front quarter of surface; chop into four pieces
-  color_surf();
-  surface(f, R.resize1(0, x_0).resize2(0,y_0)); // behind both planes
-
-#ifdef DISSECT
-  print_pst("clipping05.eepic");
-#endif
-
-  fill_xslice();
-  rect(P(x_0, 0, -MAX), P(x_0, y_0, z_0)); // left part of plane x = x_0
-
-#ifdef DISSECT
-  print_pst("clipping06.eepic");
-#endif
-
-  pen(3);
-  color_xslice();
-  plot(f, R.slice1(x_0).resize2(0, y_0));
-
-#ifdef DISSECT
-  print_pst("clipping07.eepic");
-#endif
-
-  color_surf();
-  surface(f, R.resize1(x_0, MAX).resize2(0,y_0)); // back right piece
-
-#ifdef DISSECT
-  print_pst("clipping08.eepic");
-#endif
-
-  fill_yslice();
-  rect(P(0, y_0, -MAX), P(MAX, y_0, z_0)); // plane y = y_0
-
-#ifdef DISSECT
-  print_pst("clipping09.eepic");
-#endif
-
-  pen(3);
-  color_yslice();
-  plot(f, R.slice2(y_0).resize1(0, MAX));
-
-#ifdef DISSECT
-  print_pst("clipping11.eepic");
-#endif
-
-  color_surf();
-  surface(f, R.resize1(0, x_0).resize2(y_0, MAX)); // front left piece
-
-#ifdef DISSECT
-  print_pst("clipping12.eepic");
-#endif
-
-  fill_xslice();
-  rect(P(x_0, y_0, -MAX), P(x_0, MAX, z_0)); // right part of plane x = x_0
-
-#ifdef DISSECT
-  print_pst("clipping13.eepic");
-#endif
-
-  pen(3);
-  color_xslice();
-  plot(f, R.slice1(x_0).resize2(y_0, MAX));
-
-#ifdef DISSECT
-  print_pst("clipping14.eepic");
-#endif
-
-  color_surf();
-  surface(f, R.resize1(x_0, MAX).resize2(y_0, MAX)); // front right piece
-
-  clip_box(P(-MAX,-MAX,-2), P(MAX,MAX,2));
-
-  // labels and graph slices
-  color_yslice();
-  label(f(MAX, y_0), P(-4,0), 
-	"$\\displaystyle\\frac{\\partial f}{\\partial x}$: $y$ constant", l);
-
-  color_xslice();
-  label(f(x_0, MAX), P(4,0), 
-	"$\\displaystyle\\frac{\\partial f}{\\partial y}$: $x$ constant", br);
-
-#ifdef DISSECT
-  print_pst("clipping15.eepic");
-#endif
-
-  pst_format();
-  end();
-}
-
diff --git a/graphics/epix/samples/color_sep.xp b/graphics/epix/samples/color_sep.xp
deleted file mode 100644
index 5ba4df4fc9..0000000000
--- a/graphics/epix/samples/color_sep.xp
+++ /dev/null
@@ -1,76 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-// re cos(u+iv)
-P f(double u, double v)
-{
-  return P(u, v, 2*cosh(u)*Cos(v));
-}
-
-domain R(P(-1,-1), P(1,1), mesh(16,16));
-
-// RGB densities
-P color(double x, double y, double z)
-{
-  return P(Sin(x), -Sin(y), -Sin(x));
-}
-
-int main()
-{
-  picture(P(0,0), P(5,1), "5x1in");
-
-  begin();
-
-  camera.filter(CMYK_Neutral()); // convert colors to CMYK in output
-  grid(5,1);
-  camera.at(4,3,1);
-
-  plain(Red(1.6));
-
-  // Original
-  screen all(P(-1.5,0.5), P(1.5,3.5));
-  activate(all);
-  set_crop();
-
-  surface(f, R, color);
-  inset(all, P(0,0), P(1,1));
-
-  // Cyan
-  screen cyn(P(-1.5,0.5), P(1.5,3.5));
-  activate(cyn);
-  set_crop();
-  camera.filter(C_Process()); // get cyan layer
-
-  surface(f, R, color);
-  inset(cyn, P(1,0), P(2,1));
-
-  // Magenta
-  screen mgn(P(-1.5,0.5), P(1.5,3.5));
-  activate(mgn);
-  set_crop();
-  camera.filter(M_Process());
-
-  surface(f, R, color);
-  inset(mgn, P(2,0), P(3,1));
-
-  // Yellow
-  screen ylw(P(-1.5,0.5), P(1.5,3.5));
-  activate(ylw);
-  set_crop();
-  camera.filter(Y_Process());
-
-  surface(f, R, color);
-  inset(ylw, P(3,0), P(4,1));
-
-  // Black
-  screen blk(P(-1.5,0.5), P(1.5,3.5));
-  activate(blk);
-  set_crop();
-  camera.filter(K_Process());
-
-  surface(f, R, color);
-  inset(blk, P(4,0), P(5,1));
-
-  end();
-}
diff --git a/graphics/epix/samples/conic.xp b/graphics/epix/samples/conic.xp
deleted file mode 100644
index 394a326394..0000000000
--- a/graphics/epix/samples/conic.xp
+++ /dev/null
@@ -1,55 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-const int MAX(24);
-const double x0(4);
-const double ht(3); // camera height
-const double INFTY(100000);
-
-P f(double t)
-{
-  return P(t, t*t, 0);
-}
-
-int main() 
-{
-  picture(P(-3,-3),P(3,3), "4x4in");
-
-  begin();
-
-  border();
-  set_crop();
-
-  viewpoint(0,-ht*ht, ht);
-  camera.look_at(P(0,0,1));
-
-  pen(Black(0.3), "0.1pt");
-  grid(P(-MAX,0), P(MAX, MAX*MAX), MAX, MAX*MAX/8);
-  grid(P(-MAX, 0, 2*ht), P(MAX, MAX*MAX, 2*ht), MAX, MAX*MAX/8);
-
-  pen(Blue(1.4));
-  envelope(f, -MAX/2, MAX/2, 20); // envelope of tangent lines
-
-
-  bbold(Blue());
-  Line(P(-100, INFTY, 0), P(100, INFTY, 0));
-
-  masklabel(P(0,0), P(0,2), "$(0,0)$", t);
-  label(P(0,INFTY), P(0,-2), "$(0,\\infty)$", b);
-  label(P(-0.25*INFTY,INFTY), P(0, 2), "Horizon", t);
-
-  masklabel(P(x0, x0*x0), P(-4,0), "$y=x^2$", l);
-
-  box(P(0,0));
-  box(P(0,INFTY));
-
-  pen(1);
-  plot(f, -MAX, MAX, 240);
-
-  camera.at(0,0,1000);
-  masklabel(P(0, ymin()), P(0,0), 
-	"Projective equivalence of a parabola and a circle", t);
-
-  end();
-}
diff --git a/graphics/epix/samples/contour.xp b/graphics/epix/samples/contour.xp
deleted file mode 100644
index 2a0b093b5b..0000000000
--- a/graphics/epix/samples/contour.xp
+++ /dev/null
@@ -1,56 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-// arc arrow extent
-const double theta(60);
-
-// arc radii
-const double rad(0.25);
-const double Rad(4.5);
-
-// half-width of slit
-const double ht(0.0625);
-
-int main() 
-{
-  // old-style size declarations
-  bounding_box(P(-5, -5), P(5,5));
-  picture(160, 160);
-  unitlength("0.35mm");
-
-  begin();
-  degrees();
-  tikz_format();
-
-  // "start" angles of arcs; must come after degrees()
-  const double theta1(Asin(ht/rad));
-  const double theta2(Asin(ht/Rad));
-
-  fill(Black(0.1)); // light gray
-
-  // build keyhole in pieces; += concatenates
-  path contour(P(0,0), Rad*E_1, Rad*E_2, theta2, 360-theta2);    // outer arc
-  contour += path(polar(Rad,-theta2), polar(rad,-theta1));       // lower slit
-  contour += path(P(0,0), rad*E_1, rad*E_2, 360-theta1, theta1); // inner arc
-  contour += path(polar(rad, theta1), polar(Rad, theta2));       // upper slit
-
-  contour.close().fill().draw();
-
-  dot(P(0,0));   // the origin
-
-  //  plain(Black());
-  arrow_width(2);
-  arrow_inset(0.25);
-
-  arrow(P(Rad/4, 0.1*Rad), P(3*Rad/4, 0.1*Rad)); // arrow ends in terms of Rad
-  arrow(P(3*Rad/4, -0.1*Rad), P(Rad/4, -0.1*Rad));
-
-  arc_arrow(P(0,0), 0.9*Rad, 180-theta, 180+theta);
-
-  label(P(Rad,ht), P(2,4), "$R\\to\\infty$", tr);
-  label(P(0,rad), P(0,4), "$\\delta\\to0$", tl);
-  label(polar(Rad, 45), P(0,0), "$\\gamma$", tr);
-
-  end();
-}
diff --git a/graphics/epix/samples/coord_tricks.xp b/graphics/epix/samples/coord_tricks.xp
deleted file mode 100644
index 06cf009037..0000000000
--- a/graphics/epix/samples/coord_tricks.xp
+++ /dev/null
@@ -1,66 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-const double gap(0.15); // distance between graph portions
-
-Color GRAY(Black(0.5));
-
-int main()
-{
-  picture(P(0,0),P(2+gap,2+gap), "4x4in");
-
-  begin();
-
-  plain(GRAY);
-  // draw in global coordinates
-  axis_break(P(1,0), P(1+gap,0));
-  axis_break(P(0,1), P(0,1+gap));
-
-  // portion adjacent to origin
-  screen scr1(P(0,0), P(4,4));
-  activate(scr1);
-
-  set_crop();
-  grid(8,8);
-
-  h_axis_labels(4, P(0,-4), b);
-  v_axis_labels(4, P(-4,0), l);
-
-  bold(Red());
-  plot(recip, 0, 4, 120);
-
-  inset(P(0,0), P(1,1));
-
-  // right portion
-  screen scr2(P(10,0), P(14,4));
-  activate(scr2);
-
-  set_crop();
-  plain(GRAY);
-  grid(8,8);
-
-  h_axis_labels(4, P(0,-4), b);
-
-  bold(Red());
-  plot(recip, 10, 14, 20);
-
-  inset(P(1+gap,0), P(2+gap,1));
-
-  // top portion
-  screen scr3(P(0,10), P(4,14));
-  activate(scr3);
-
-  set_crop();
-  plain(GRAY);
-  grid(8,8);
-
-  v_axis_labels(4, P(-4,0), l);
-
-  bold(Red());
-  plot(recip, 0.05, 0.1, 10);
-
-  inset(P(0,1+gap), P(1,2+gap));
-
-  end();
-}
diff --git a/graphics/epix/samples/cropplot.xp b/graphics/epix/samples/cropplot.xp
deleted file mode 100644
index b470d90497..0000000000
--- a/graphics/epix/samples/cropplot.xp
+++ /dev/null
@@ -1,35 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-double f(double t) { return 2*t*(1-t)*(1-t); }
-double g(double t) { return 1/(1-t*t); }
-
-int main()
-{
-  picture(P(-2,-4), P(2,4), "200x200pt");
-
-  begin();
-
-  set_crop();
-  // Vertical asymptotes
-  dashed();
-  line(P(-1, ymin()), P(-1, ymax()));
-  line(P( 1, ymin()), P( 1, ymax()));
-  solid();
-
-  // Axes
-  h_axis(8);
-  v_axis(8);
-
-  h_axis_labels(4, P(-1, 2), tl); // align top-left
-  v_axis_labels(4, P(-1, 2), tl);
-
-  // Graphs
-  plot(f, xmin(), xmax(), 80);
-
-  bold();
-  plot(g, xmin(), xmax(), 80); // N.B. poles are sample points
-
-  end();
-}
diff --git a/graphics/epix/samples/cube.flx b/graphics/epix/samples/cube.flx
deleted file mode 100644
index c2d1df2505..0000000000
--- a/graphics/epix/samples/cube.flx
+++ /dev/null
@@ -1,44 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-int main(int argc, char* argv[])
-{
-  if (argc == 3)
-    {
-      char* arg;
-      double temp1, temp2;
-      temp1=strtod(argv[1], &arg);
-      temp2=strtod(argv[2], &arg);
-
-      tix()=temp1/temp2;
-    }
-
-  picture(P(-4,-4), P(4,4), "5 x 5in");
-
-  begin();
-  revolutions();
-
-  grid(1,1);
-
-  P ctr(3.25,-3.25); // "clock" center
-  bold();
-  ellipse(ctr, P(0.5,0.5)); // clock face
-
-  line(ctr, ctr+polar(0.4,tix())); // hands
-  label_angle(tix()-0.25);
-  label(ctr+polar(0.6,tix()), "$\\theta$");
-
-  // a cube :)
-  domain R(P(-2,-2,-2), P(2,2,2), mesh(1,1,1));
-
-  camera.at(sph(10,tix(),-0.05));
-  plain(Cyan());
-  plot(xyz, R); // draw cube; xyz = Cartesian pt constructor
-
-  camera.at(sph(10,0.01 + tix(),-0.05)); // 3.6 degrees away
-  red(1.4); // slightly lightened red
-  plot(xyz, R);
-
-  end();
-}
diff --git a/graphics/epix/samples/dataplot.xp b/graphics/epix/samples/dataplot.xp
deleted file mode 100644
index 221c33a73c..0000000000
--- a/graphics/epix/samples/dataplot.xp
+++ /dev/null
@@ -1,55 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-P F(double x, double y)
-{
-  return P((x-y)*(x+y), 2*x*y);
-}
-
-int main()
-{
-  picture(P(-1,0),P(1,20), "6x6in");
-
-  begin();
-
-  // create a 2-column data file with 121 rows
-  data_file DF(Cos, Sin, 0, M_PI, 120);
-
-  legend L;
-  plain(Black());
-  fill(Blue(1.8));
-
-  // act on first two columns; result doubles angles
-  DF.transform(F);
-
-  data_bins db(-1.05, 1.05, 21); // bins centered on -1, -0.9, ..., 0.9, 1
-  db.read(DF.column(1));   // read col1
-  db.bar_chart(db.pop());  // and plot, scaling to population
-
-  L.fill_item("Population count"); // add a filled legend item
-
-  label_color(Blue(1.2));
-  v_axis_labels(P(xmin(), ymin()), P(xmin(), ymax()), 0.5*ysize(), P(-4,0), l);
-  // superimpose plot of raw data
-  screen raw(P(-1,-1), P(1,1));
-  activate(raw);
-  label_color(Red());
-  DF.plot(DDOT);            // scatter plot
-  L.mark_item(DDOT, "Data points");
-
-  nofill();
-  plain(Black(0.3));
-  grid(1,10);
-
-  v_axis_labels(P(1,-1), P(1,1), 4, P(4,0), r);
-
-  //  DF.write("circle.dat");  // write to a disk file
-  inset(P(-1,0), P(1,20));
-  deactivate(raw); // polite but unnecessary
-
-  L.draw(canvas().c(), P(0,0), c);
-
-  pst_format();
-  end();
-}
diff --git a/graphics/epix/samples/decorate.xp b/graphics/epix/samples/decorate.xp
deleted file mode 100644
index 5b6d9cf32c..0000000000
--- a/graphics/epix/samples/decorate.xp
+++ /dev/null
@@ -1,120 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-/*
- * Compile with, e.g. elaps -DNORMAL --huge decorate.xp
- */
-
-#define LINEFIELD
-// #define NORMAL
-
-const int N1(24);  // latitudes
-const int N2(48);  // longitudes
-
-const double du(1.0/N1);
-const double dv(1.0/N2);
-
-const P VIEWPT(6, 3, 4);
-
-const double r_0(0.95); // minor radius
-const double R_0(2);    // major radius
-double g(double u)
-{
-  return R_0 + r_0*Cos(u);
-}
-
-P F(double u, double v)
-{
-  return polar(g(u), v) + P(0,0,r_0*Sin(u));
-}
-
-namespace ePiX {
-  // a facet-like class that can be drawn with extra decorations, e.g.,
-  // normal vectors, diagonals, orientation-dependent colors...
-  class mesh_quad {
-  private:
-    P pt1, pt2, pt3, pt4, center;
-    double distance;
-
-  public:
-    mesh_quad(P f(double u, double v), double u0, double v0)
-      : pt1(f(u0,v0)), pt2(f(u0+du,v0)), pt3(f(u0+du,v0+dv)), pt4(f(u0,v0+dv)),
-	center(0.25*(pt1 + pt2 + pt3 + pt4)),
-	distance(norm(center-camera.viewpt())) { }
-	  
-    double how_far() const { return distance; }
-
-    void draw() const
-    { 
-      P direction(center-camera.viewpt());
-      P normal((pt2 - pt1)*(pt4 - pt1));
-      normal *= 1/norm(normal);
-
-      blue(0.75*(normal|(recip(distance)*direction)));
-
-#ifdef NORMAL
-      if ((normal|direction) < 0)
-	{
-	  plain(Green(0.6));
-	  arrow(center, center-0.5*normal, 0.5);
-	}
-#endif
-      fill();
-      ePiX::quad(pt1, pt2, pt3, pt4);
-      fill(false);
-
-#ifdef LINEFIELD
-      if ((normal|direction) > 0)
-	bbold(Blue(1.8));
-      else
-	bold(Red());
-
-      line(pt1, 0.5*(pt3+pt4));
-      line(0.5*(pt1+pt2), pt3);
-#endif
-
-#ifdef NORMAL
-      if ((normal|direction) > 0)
-	{
-	  plain(Green(0.6));
-	  arrow(center, center-0.5*normal, 0.5);
-	}
-#endif
-    }
-  };
-
-  class by_distance {
-  public:
-    bool operator() (const mesh_quad& arg1, const mesh_quad& arg2)
-    { return arg1.how_far() > arg2.how_far(); }
-  };
-} // end of namespace
-
-int main() {
-  picture(P(-3,-3),P(3,3), "4x4in");
-
-  begin();
-  revolutions();
-
-  viewpoint(VIEWPT);
-  camera.range(10);
-
-  // chop off the front
-  clip_face(P(R_0, 0, r_0), P(-0.25,-0.25,-1));
-
-  // build and draw a torus
-  std::vector<mesh_quad> mesh;
-
-  for (int i=0; i<N1; ++i)
-    for (int j=0; j<N2; ++j)
-      mesh.push_back(mesh_quad(F, i*du, j*dv));
-
-  sort(mesh.begin(), mesh.end(), by_distance());
-
-  //  arrow_fill(1);
-  for (unsigned int i=0; i<mesh.size(); ++i)
-    mesh.at(i).draw();
-
-  pst_format();
-  end();
-}
diff --git a/graphics/epix/samples/demoivre.xp b/graphics/epix/samples/demoivre.xp
deleted file mode 100644
index 1225906a12..0000000000
--- a/graphics/epix/samples/demoivre.xp
+++ /dev/null
@@ -1,42 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-const int N(24);
-const double theta(0.875*M_PI);
-const pair alpha(1, theta/N);
-
-// pairs implement complex arithmetic, but need P to draw
-P pair2P(pair arg)
-{
-  return P(arg.x1(), arg.x2());
-}
-
-int main()
-{
-  picture(P(-1.5,0), P(1,1.25), "200 x 100pt");
-
-  begin();
-
-  pair power(1,0);
-
-  for(int i=0; i<N; ++i)
-    {
-      line(P(0,0), pair2P(alpha*power));         // draw two sides
-      line(pair2P(power), pair2P(alpha*power));  // of triangle
-      power *= alpha;            // and increment power
-    }
-
-  label(pair2P(alpha), P(2,0), "$\\alpha=1+\\frac{i\\theta}{n}$", r);
-  label_angle(theta-M_PI);
-  ddot(pair2P(power), P(2,4), "$\\alpha^n\\approx e^{i\\theta}$", b);
-
-  plain(Black(0.3));
-  arc(P(0,0), 1, 0, theta);
-  ddot(cis(theta), P(0,-4), "$$", b);
-
-  bold(Red());
-  triangle(P(0, 0), P(1, 0), pair2P(alpha));
-
-  end();
-}
diff --git a/graphics/epix/samples/denom.xp b/graphics/epix/samples/denom.xp
deleted file mode 100644
index 015f29bb4a..0000000000
--- a/graphics/epix/samples/denom.xp
+++ /dev/null
@@ -1,39 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-int N(30); // maximum denominator plotted
-
-int main() 
-{
-  picture(P(-2,0), P(2,1), "4x1in");
-
-  begin();   
-  tikz_format();
-
-  axis Ax(P(-2,0), P(2,0), 8, P(0,-6), b);
-  Ax.subdivide(6).frac().draw();
-
-  v_axis(2);
-
-  dot_size(2);
-  for (int i=1; i< N; ++i) 
-    for (int j=i*xmin(); j <= i*xmax(); ++j) 
-      if (gcd(i, j) == 1) 
-        ddot(P(j*1.0/i, 1.0/i));
-
-  font_size("scriptsize");
-
-  // The long label text can be written in one string, but using a
-  // stringstream allows the input to be formatted more readably.
-  std::stringstream buf;
-  buf << "$f(x)=\\begin{cases}%" << std::endl
-      << "  \\frac{1}{q} & "
-      << "\\text{ $x=\\frac{p}{q}$ in lowest terms} \\\\" << std::endl
-      << "  0 & \\text{ $x$ irrational}%" << std::endl
-      << "\\end{cases}$";
-
-  label(P(0,0.75), P(2,0), buf.str(), r);
-  end();
-}
-
diff --git a/graphics/epix/samples/densityplot.xp b/graphics/epix/samples/densityplot.xp
deleted file mode 100644
index 51ef671cc6..0000000000
--- a/graphics/epix/samples/densityplot.xp
+++ /dev/null
@@ -1,44 +0,0 @@
-/* -*-ePiX-*- */
-#include <epix.h>
-using namespace ePiX;
-
-const int MAX(18);
-
-// basic circular wave
-double ripple(double u, double v)
-{
-  return pow(Cos(0.5*sqrt(u*u+v*v)),2);
-}
-
-// superposition
-double f(double u, double v)
-{
-  return 0.25*(1+ripple(u, v-10) + ripple(u, v+10));
-}
-
-// f as a parametric surface
-P F(double u, double v)
-{
-  return P(u, v, f(u,v));
-}
-
-// height-dependent coloring
-P color(double u, double v, double w)
-{
-  return P(0.2+0.8*w, 0.3, 0.8 - 0.6*w);
-}
-
-domain R(P(-MAX,-MAX), P(MAX,MAX), mesh(2*MAX, 2*MAX));
-
-int main()
-{
-  picture(P(-MAX,-MAX), P(MAX,MAX), "3x3in");
-
-  begin();
-
-  pen(Magenta(1.4), 0.2);
-  surface(F, R, color);
-
-  pst_format();
-  end(); 
-}
diff --git a/graphics/epix/samples/dipole.xp b/graphics/epix/samples/dipole.xp
deleted file mode 100644
index da17229481..0000000000
--- a/graphics/epix/samples/dipole.xp
+++ /dev/null
@@ -1,86 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-// number of field lines per charge
-const int N(13);
-
-// charge magnitudes and locations
-const int charge1(1);
-const int charge2(1);
-
-const P Q1( 1,0);
-const P Q2(-1,0);
-
-// inverse-square electric field from a point charge at the origin
-P unit_charge(const P& arg) 
-{ 
-  return recip(arg|arg)*arg;
-}
-
-// electric field simulated by superimposing individual fields, then
-// re-scaling so that field -> 0 near the charge location (improves
-// plot quality:)
-P E(double x, double y)
-{ 
-  P temp(x,y);
-  // superposition of charge fields
-  P E_temp(charge1*unit_charge(temp-Q1) + charge2*unit_charge(temp-Q2));
-
-  // re-scale
-  return (1.0/(E_temp|E_temp))*E_temp;
-}
-
-P potential(double x, double y)
-{
-  // J rotates a vector by 1/4 turn; parallel to equipotentials
-  return J(E(x,y));
-}
-
-const double MAX(3);
-
-int main()
-{
-  picture(P(-MAX,-MAX), P(MAX,MAX), "4x4in");
-
-  begin();
-  set_crop();
-  degrees(); // change angle mode
-
-  // plot field lines
-  blue();
-  for (int i=0; i < N; ++i)
-    {
-      // initial points trace a small circle about Q1 or Q2,
-      ode_plot(E, Q1+polar(0.05, i*360.0/N), 10, 120);
-      ode_plot(E, Q2-polar(0.05, i*360.0/N), 10, 120);
-
-      // location of arrowhead
-      P pt(flow(E, Q2-polar(0.05, i*360.0/N), 3, 12));
-    }
-
-  green();
-  for (int i=-10; i < 10; ++i)
-    {
-      ode_plot(potential, Q1+polar(0.25*pow(0.8, i), 0), 2*M_PI, 120);
-      ode_plot(potential, Q2-polar(0.25*pow(0.8, i), 0), 2*M_PI, 120);
-    }
-
-  dot_size(6);
-  circ(Q1);
-  circ(Q2);
-
-  magenta();
-  label(Q1, "$+$");
-  label(Q2, "$+$");
-
-  blue();
-  for (int i=0; i < N; ++i)
-    {
-      P pt(flow(E, Q2-polar(0.05, i*360.0/N), 3.5, 12));
-      arrow(pt, pt+0.01*E(pt.x1(), pt.x2()));
-      arrow(-pt, -pt+0.01*E(-pt.x1(), -pt.x2()));
-    }
-
-  end();
-}
diff --git a/graphics/epix/samples/extract.xp b/graphics/epix/samples/extract.xp
deleted file mode 100644
index b061df18db..0000000000
--- a/graphics/epix/samples/extract.xp
+++ /dev/null
@@ -1,109 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-// a benign function
-double phi(double x)
-{
-  return x*x;
-}
-
-// and its derivative
-Deriv dphi(phi);
-
-// parameters defining an arbitrary line ell
-const double slope(-2);
-const double beta(0.5);
-
-const double ht(phi(beta));
-const double alpha(slope-dphi.eval(beta));
-
-const double eps(0.02); // size of extraction
-
-// a small perturbation to adjust the derivative
-double f(double x)
-{
-  return x/(1+16384*x*x);
-}
-
-double gn(double x)
-{
-  return f(alpha*(x-beta));
-}
-
-// phi's Evil Twin
-double psi(double x)
-{
-  return phi(x) + gn(x);
-}
-
-// inset parameters
-const P mag_ctr(P(0.75, 0.2));
-const double mag_sz(0.125);
-
-int main()
-{
-  picture(P(0,0), P(1,0.75), "4x3in");
-
-  begin();
-  set_crop();
-
-  // two nearly-equal graphs, and the tangent to one of them
-  plain(Blue());
-  plot(psi, xmin(), beta-eps, 60);
-  plot(psi, beta+eps, xmax(), 60);
-  plot(psi, beta-eps, beta+eps, 60);
-
-  pen(Green(0.6));
-  Line(P(beta,phi(beta)), slope);
-
-  bold(Red());
-  plot(phi, xmin(), xmax(), 60);
-  plain();
-
-  // cut out a small neighborhood and magnify it
-  screen mag(canvas().extract_ellipse(P(beta-eps, psi(beta)-eps),
-				      P(beta+eps, psi(beta)+eps)));
-  mag.backing(Yellow(0.05));
-  mag.border(Black(), "0.4pt");
-
-  inset(mag, mag_ctr - mag_sz*P(1,1), mag_ctr + mag_sz*P(1,1));
-
-  pen(Black());
-  // axes
-  line(P(xmin(),0), P(xmax(),0));
-  line(P(0,ymin()), P(0,ymax()));
-
-  // indicators
-  line(P(beta,0), P(beta,phi(beta)), -20); // shorten slightly
-  line(P(0,phi(beta)), P(beta,phi(beta)), -10);
-
-  // zoom lines
-  line(P(beta, phi(beta)), mag_ctr + polar(mag_sz, 2*M_PI/3), -20);
-  line(P(beta, phi(beta)), mag_ctr + polar(mag_sz, 5*M_PI_4), -20);
-
-  font_size("footnotesize");
-  label(P(beta,0), P(0,-4), "$\\beta$", b);
-  label(P(0,phi(beta)), P(-4,0), "$b$", l);
-
-  // use mag_ctr to place inset labels
-  red();
-  label(P(beta+0.1,phi(beta+0.1)), P(-2,2), "$\\varphi$",tl);
-  label(mag_ctr, P(0,6), "$\\varphi$",tr);
-
-  blue();
-  label(P(beta+0.1,psi(beta+0.1)), P(2,-2), "$\\psi$",br);
-  label(mag_ctr, P(8,-2), "$\\psi$",br);
-
-  green(0.6);
-  label(P(beta-0.1,ht-0.1*slope), P(2,2), "$\\ell$",tr);
-  label(mag_ctr, P(-12,20), "$\\ell$", bl);
-
-  black();
-  // a large label
-  label_border(Blue(), "0.2pt");
-  masklabel(P(0.5*(xmin()+xmax()), ymax()), P(0,0),
-	    "\\begin{minipage}{2.25in}A graph with unexpected tangent line\\end{minipage}", b);
-
-  end();
-}
diff --git a/graphics/epix/samples/geomsum.xp b/graphics/epix/samples/geomsum.xp
deleted file mode 100644
index 665b1568e8..0000000000
--- a/graphics/epix/samples/geomsum.xp
+++ /dev/null
@@ -1,37 +0,0 @@
-/* -*-ePiX-*- */
-/* geomsum.c -- July 16, 2001 */
-#include "epix.h"
-using namespace ePiX;
-
-const int N(8);
-
-int main() 
-{
-  picture(P(0,0), P(1,1), "2.5x2.5in");
-  begin();
-
-  pen(White(), "0.8pt");
-  fill(White(0.9));
-  rect(P(0,0), P(1,1));
-
-  black();
-  label(P(1.0/4,   1.0/2), "$\\frac{1}{2}$");
-  label(P(5.0/8,   3.0/4), "$\\frac{1}{8}$");
-  label(P(13.0/16, 7.0/8), "$\\frac{1}{32}$");
-
-  white();
-  fill(Blue());
-  double t(0.5);
-
-  for(int i=0; i<N; ++i, t *= 0.5)
-    {
-      rect(P(1-t, 1-2*t), P(1, 1-t));
-      line(P(1-t, 1-2*t), P(1-t, 1));
-    }
-
-  label(P(3.0/4,     1.0/4), "$\\mathbf{\\frac{1}{4}}$");
-  label(P(7.0/8,     5.0/8), "$\\mathbf{\\frac{1}{16}}$");
-  label(P(15.0/16, 13.0/16), "$\\mathbf{\\frac{1}{64}}$");
-
-  end();
-}
diff --git a/graphics/epix/samples/golden_rect.xp b/graphics/epix/samples/golden_rect.xp
deleted file mode 100644
index f6fc6d54a1..0000000000
--- a/graphics/epix/samples/golden_rect.xp
+++ /dev/null
@@ -1,29 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-const double tau((1+sqrt(5))/2);
-
-int main() 
-{
-  bounding_box(P(0,0), P(tau,1));
-  picture(100*(1+tau), 100*tau);
-  unitlength("0.0125in");
-
-  begin();
-
-  dashed();
-  line(P(0.5,0), P(0.5,1));
-
-  solid();
-  line(P(1,0), P(1,1));
-  line(P(0.5,0), P(1,1));
-
-  arc(P(0.5,0), tau-0.5, 0, Atan(2.0));
-  
-  bold();
-  rect(P(0,0), P(tau, 1));
-
-  end();
-}
-
diff --git a/graphics/epix/samples/helicoid.flx b/graphics/epix/samples/helicoid.flx
deleted file mode 100644
index fdf68fc7ad..0000000000
--- a/graphics/epix/samples/helicoid.flx
+++ /dev/null
@@ -1,133 +0,0 @@
-/* -*-flix-*- */
-/*
- * Animation depicting the local isometric deformation of a
- * catenoid to a helicoid through minimal immersions
- */
-#include "epix.h"
-using namespace ePiX;
-
-// number of meridians and latitudes
-int N1(72);
-int N2(24);
-
-P VIEWPT(4, 3, 4);
-
-// locations of "lights"; see mesh::draw() below for implementation
-P LIGHT_R(10,0,10);
-P LIGHT_G(0,10,10);
-P LIGHT_B(0,-10,10);
-
-// internal constants
-double r_0(1.0);
-double EPS(0.0); // fact shrink factor
-double du(2.0/N1), dv(4.0/N2);
-
-// parametrized surfaces
-P helicoid(double u, double v)
-{
-  return P(sinh(v)*Cos(M_PI*u), sinh(v)*Sin(M_PI*u), 2*M_PI*u);
-}
-
-P catenoid(double u, double v)
-{
-  return P(cosh(v)*Sin(M_PI*u), -cosh(v)*Cos(M_PI*u), -v);
-}
-
-P morph(double u, double v)
-{
-  return Cos(2*M_PI*tix())*helicoid(u,v) + Sin(2*M_PI*tix())*catenoid(u,v);
-}
-
-// facet-like class with spot reflection
-class element
-{
-private:
-  P pt1;
-  P pt2;
-  P pt3;
-  P pt4;
-  
-  double distance;
-
-public:
-  element(P f(double u, double v), double u0, double v0)
-    : pt1(f(u0+EPS,v0+EPS)), pt2(f(u0+du-EPS,v0+EPS)),
-      pt3(f(u0+du-EPS,v0+dv-EPS)), pt4(f(u0+EPS,v0+dv-EPS))
-  {
-    P center(0.25*(pt1 + (pt2 + (pt3 + pt4))));
-    P temp(camera.viewpt());
-
-    distance = norm(center-temp);
-  }
-
-  double how_far() const { return distance; }
-
-  void draw()
-  { 
-    P normal((pt2 - pt1)*(pt4 - pt1));
-    normal *= 1/norm(normal);
-
-    double dens_r(0.75*(pow(normal|LIGHT_R, 2)/(LIGHT_R|LIGHT_R)));
-    double dens_g(0.75*(pow(normal|LIGHT_G, 2)/(LIGHT_G|LIGHT_G)));
-    double dens_b(0.75*(pow(normal|LIGHT_B, 2)/(LIGHT_B|LIGHT_B)));
-
-    fill(RGB(dens_r, dens_g, dens_b));
-    ePiX::quad(pt1, pt2, pt3, pt4);
-  }
-
-};
-
-class By_distance {
-public:
-  bool operator() (const element& arg1, const element& arg2)
-  {
-    return arg1.how_far() > arg2.how_far(); 
-  }
-};
-
-
-int main(int argc, char* argv[])
-{
-  if (argc == 3)
-    {
-      char* arg;
-      double temp1, temp2;
-      temp1=strtod(argv[1], &arg);
-      temp2=strtod(argv[2], &arg);
-
-      tix()=temp1/temp2;
-    }
-
-  double MAX(8);
-  picture(P(-MAX,-MAX),P(MAX,MAX), "5x5in");
-
-  begin();
-  pen(Neutral(), 0); // no grid lines
-
-  // draw bounding square for uniform frame size
-  backing(Black());
-  viewpoint(VIEWPT);
-
-  /* rotating lights
-  LIGHT_R=cis(2*M_PI*tix());
-  LIGHT_G=cis(2*M_PI*(tix()+0.25));
-  LIGHT_B=P(-2,-2,6);
-  */
-
-  camera.range(20);
-
-  // build surface
-  std::vector<element> mesh;
-
-  for (int i=0; i<N1; ++i)
-    for (int j=0; j<N2; ++j)
-      mesh.push_back(element(morph, -1+du*i, -2+dv*j));
-
-  sort(mesh.begin(), mesh.end(), By_distance());
-
-  for (unsigned int i=0; i<mesh.size(); ++i)
-    mesh.at(i).draw();
-
-  pst_format();
-  end();
-}
diff --git a/graphics/epix/samples/hello.xp b/graphics/epix/samples/hello.xp
deleted file mode 100644
index 812529f654..0000000000
--- a/graphics/epix/samples/hello.xp
+++ /dev/null
@@ -1,20 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-int main()
-{
-  picture(P(-1,-1), P(1,1), "2x1in");
-
-  begin();
-
-  // uncomment and permute these lines
-  // crop_ellipse();
-  // backing(Cyan());
-  border(Black(), "1pt");
-
-  font_size("Huge");
-  label(P(0,0), "Hello, world!");
-
-  end();
-}
diff --git a/graphics/epix/samples/histogram.xp b/graphics/epix/samples/histogram.xp
deleted file mode 100644
index 47e704fba2..0000000000
--- a/graphics/epix/samples/histogram.xp
+++ /dev/null
@@ -1,83 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-// See binom.cc for instructions on creating data file binom.dat
-
-double erf(double x)
-{
-  return 100*exp(-0.02*(x-50)*(x-50))/sqrt(50*M_PI);
-}
-
-int main() 
-{
-  picture(P(0,0),P(100,20), "6 x 6in");
-
-  begin();
-
-  grid(1,10);
-
-  // read disk file
-  data_file binom("binom.dat");
-
-  // create "bins" for bar chart
-  data_bins db05(-0.5, 100.5, 101);  // 5% biased coin
-  data_bins db10(-0.5, 100.5, 101);  // 10%
-  data_bins db30(-0.5, 100.5, 101);  // 30%
-  data_bins db50(-0.5, 100.5, 101);  // 50%
-
-  db05.read(binom.column(1));
-  db10.read(binom.column(2));
-  db30.read(binom.column(3));
-  db50.read(binom.column(4));
-
-  legend L;
-
-  fill();
-  gray(0.6);
-  db05.bar_chart(100);
-  L.fill_item("5\\%");
-
-  gray(0.4);
-  db10.bar_chart(100);
-  L.fill_item("10\\%");
-
-  gray(0.2);
-  db30.bar_chart(100);
-  L.fill_item("30\\%");
-
-  gray(0);
-  db50.bar_chart(100);
-  L.fill_item("50\\%");
-
-  nofill();
-
-  font_size("footnotesize");
-  tick_size(1);
-  bottom_axis(10, P(0,-4), b).draw();
-
-  left_axis(10, P(-4,0), l).subdivide(2).draw();
-
-  bold(Red());
-  plot(erf, xmin(), xmax(), 240);
-  L.path_item("Normal");
-
-  font_size("LARGE");
-  L.key_size(18);
-  L.draw(P(50, 12.5), P(2,2), tr);
-
-  font_face("sc");
-  label(P(0.5*(xmin()+xmax()), ymax()), P(0,12), 
-	"Tossing a Biased Coin, 100,000 Trials", t);
-
-  font_size(); // reset to default
-  label(P(0.5*(xmin()+xmax()), ymin()), P(0,-18), 
-	"Number of Heads (100 Tosses per Trial)", b);
-
-  degrees();
-  label_angle(90);
-  label(P(xmin(), 0.5*(ymin()+ymax())), P(-18,0), "Percentage of Trials", l);
-
-  pst_format();
-  end();
-}
diff --git a/graphics/epix/samples/house.flx b/graphics/epix/samples/house.flx
deleted file mode 100644
index 7f4d683849..0000000000
--- a/graphics/epix/samples/house.flx
+++ /dev/null
@@ -1,88 +0,0 @@
-/* -*-flix-*- */
-#include "epix.h"
-using namespace ePiX;
-
-const double DY(0.1);
-const int N(200);
-const double dN(1.0/N);
-
-int main(int argc, char* argv[])
-{
-  if (argc == 3)
-    {
-      char* arg;
-      double temp1, temp2;
-      temp1=strtod(argv[1], &arg);
-      temp2=strtod(argv[2], &arg);
-
-      tix()=temp1/temp2;
-    }
-
-  picture(P(0,0), P(5,3), "5 x 3in");
-
-  begin();
-  set_crop();
-  // sky
-  bbold();
-  for (int i=0; i<2*N; ++i)
-    {
-      // fade blue gradient to black
-      rgb((1-0.6*tix())*(0.5-0.25*dN*i),
-	  (1-0.6*tix())*(0.5-0.25*dN*i),
-	  (1-0.6*tix())*(1-0.2*dN*i));
-
-      line(P(0,1+i*dN), P(5,1+i*dN));
-    }
-
-  // sun
-  pen(4);
-  revolutions();
-  for (int i=1; i<=10; ++i)
-    {
-      // redden as tix() -> 1
-      rgb((1-0.25*tix())*(1-0.01*i), (1-tix())*(1-0.015*i), 0);
-      circle(P(3+0.5*tix(), 2.5 - 2*tix()), 0.025*i);
-    }
-
-  // roof
-  red(0.6*(1-0.6*tix()));
-  line(P(0.9,1.5), P(1.5,1.8));
-  line(P(2.1,1.5), P(1.5,1.8));
-
-  // lawn
-  bbold();
-  for (int i=0; i<N; ++i)
-    {
-      // fade green gradient to black
-      green((1-0.6*tix())*0.4*(1+i*dN));
-
-      line(P(0,i*dN), P(5,i*dN));
-    }
-
-  plain();
-  fill();
-  gray(0.2+0.8*tix());
-
-  path house;
-  house.pt(P(1,1-DY)).pt(P(2,1-DY)).pt(P(2, 1.5)).pt(P(1.5,1.75)).pt(P(1,1.5));
-  house.close().fill();
-  house.draw();
-
-  gray(0.1+0.4*tix());
-
-  rect(P(1.2,1.1), P(1.4, 1.3)); // window
-
-  pen(2);
-  dot_size(1);
-  rgb(0.8*(1-tix()), 0.8*(1-tix()), 0);
-  ring(P(1.65, 1.15)); // doorknob
-
-  fill(false);
-  plain(Black());
-  rect(P(1.6, 1-DY), P(1.85, 1.4)); // door frame
-
-  bold(RGB((1-tix())*(0.6),(1-tix())*(0.4),(1-tix())*(0.2)));
-  grid(P(1.2,1.1), P(1.4, 1.3), 2, 2); // panes
-
-  end();
-}
diff --git a/graphics/epix/samples/hyperboloid.xp b/graphics/epix/samples/hyperboloid.xp
deleted file mode 100644
index 6ea45c9192..0000000000
--- a/graphics/epix/samples/hyperboloid.xp
+++ /dev/null
@@ -1,63 +0,0 @@
-/* -*-ePiX-*- */
-// A circular hyperboloid of one sheet and its two families of rulings
-#include "epix.h"
-using namespace ePiX;
-
-const int NUM_LINES(64);
-const double dt(1.0/NUM_LINES);
-
-int main()
-{
-  picture(P(-3, -3), P(3, 3), "6x6in");
-
-  begin();
-  revolutions();
-
-  cam().at(20, 0, 5);
-
-  clip_box(P(4, 4, 2));
-
-  fill(Black(0.8));
-
-  // hyperboloid
-  surface_rev(sinh, cosh, domain(P(-2,0), P(2,1), mesh(24,36)),
-	      frame(E_3, E_2, E_1));
-
-  // clip to {x>0}
-  clip_box(P(0, -4, -2), P(4, 4, 2));
-
-  // rulings
-  for (int i=-0.5*NUM_LINES; i <= 0.5*NUM_LINES; ++i)
-    {
-      const double t(i*dt);
-      rgb(0,0.5,1);
-      Line(P(Cos(t), Sin(t), 0),  P(Cos(t) + Sin(t), Sin(t) - Cos(t), 1));
-
-      red();
-      Line(P(Cos(t), Sin(t), 0),  P(Cos(t) - Sin(t), Sin(t) + Cos(t), 1));
-    }
-
-  // emphatic rulings
-  bbold(RGB(0.1,0.6,0.9));
-  Line(P(1,0,0), P(1,-1,1));
-
-  pen(Red(1.2));
-  Line(P(1,0,0), P(1,1,1));
-  Line(P(0,1,0), P(-1,1,1));
-
-  clip_box();
-  //  font_size("footnotesize");
-  black();
-  label(P(1,0,0)-P(0,-2,2), P(2,-2), "$\\ell_0^-$", br);
-  label(P(1,0,0)+P(0, 2,2), P(18,2), "$\\ell_0^+$", t);
-  label(P(0,1,0)-P(-2,0,2), P(0,-4), "$\\ell_{\\pi/2}^+$",b);
-
-  label(P(0,0,-3), P(0,-24), 
-	"$\\ell_\\theta^-(t)=(\\cos\\theta, \\sin\\theta, 0) + t(\\sin\\theta, -\\cos\\theta, 1)$", b);
-
-  label(P(0,0,-3), P(0,-12), 
-	"$\\ell_\\theta^+(t)=(\\cos\\theta, \\sin\\theta, 0) + t(-\\sin\\theta, \\cos\\theta, 1)$", b);
-
-  pst_format();
-  end();
-}
diff --git a/graphics/epix/samples/inverse.xp b/graphics/epix/samples/inverse.xp
deleted file mode 100644
index d336b67b31..0000000000
--- a/graphics/epix/samples/inverse.xp
+++ /dev/null
@@ -1,74 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-// parameters and an odd cubic
-const double x0(0.4); // critical point
-const double sqrt3(sqrt(3));
-
-double f(double x)
-{
-  return 2*x*(x-sqrt3*x0)*(x+sqrt3*x0);
-}
-
-int main()
-{
-  picture(P(-2,-1), P(2,1), "6 x 3in");
-
-  begin();
-
-  degrees();
-
-  // draw "ordinary" graph
-  screen tmp(P(-1,-1), P(1,1));
-  activate(tmp);
-
-  // diagonal
-  pen(Black(0.1));
-  line(P(-1,-1), P(1,1));
-
-  // two-headed arrow
-  pen(Black(0.3));
-  aarrow(P(0.4,0.6), P(0.6,0.4), 0.5);
-
-  // axes and labels
-  pen(Black());
-  font_size("footnotesize");
-
-  h_axis(8);
-  v_axis(8);
-
-  masklabel(P(1,0), "$x$");
-  masklabel(P(0,1), "$y$");
-
-  label(P(0.5,-0.5), "$y=f(x)$");
-
-  label_angle(-90);
-  label(P(-0.5,0.5), "$x=f^{-1}(y)$");
-
-  // crop remaining elements
-  tmp.set_crop();
-
-  // a horizontal tangent line
-  plain(Blue(1.4));
-  tan_line(f, x0);
-
-  // graphs that will be inverse branches
-  plain(Red(1.4));
-  plot(f, -1, -x0, 20);
-
-  bold(Red());
-  plot(f, -x0, x0, 20);
-
-  plain(Red(1.4));
-  plot(f, x0, 1, 20);
-
-  inset(tmp, P(-2,-1), P(0,1));
-
-  // flip plane over diagonal
-  affine af;
-  af.reflect(45).shift(P(0.25,0)); // compose affine maps
-  inset(tmp.apply(af), P(0,-1), P(2,1));
-
-  end();
-}
diff --git a/graphics/epix/samples/koch.xp b/graphics/epix/samples/koch.xp
deleted file mode 100644
index 8a9683715c..0000000000
--- a/graphics/epix/samples/koch.xp
+++ /dev/null
@@ -1,38 +0,0 @@
-/* -*-ePiX-*- */
-/* koch.c -- May 29, 2002 */
-#include "epix.h"
-using namespace ePiX;
-
-const int koch_seed[] = {6, 4, 0, 1, -1, 0};
-
-int main() 
-{
-  picture(P(0,0), P(4, 1), "6 x 1.5in");
-
-  begin();
-  degrees();
-
-  for (int i=1; i <= 4; ++i)
-    {
-      // draw von Koch curve at "depth" i
-      screen tmp(P(-1,-1), P(1,1));
-      activate(tmp);
-
-      if (i==1)
-        {
-          bold(Red());
-          fractal(cis(150), cis(30), i, koch_seed);
-          plain(Black());
-        }
-      else
-	fractal(cis(150), cis( 30), i, koch_seed);
-
-      fractal(cis( 30), cis(-90), i, koch_seed);
-      fractal(cis(-90), cis(150), i, koch_seed);
-
-      inset(tmp, P(i-1,0), P(i,1));
-      deactivate(tmp);
-    }
-  end();
-}
-
diff --git a/graphics/epix/samples/label_debug.xp b/graphics/epix/samples/label_debug.xp
deleted file mode 100644
index 0ca0462d74..0000000000
--- a/graphics/epix/samples/label_debug.xp
+++ /dev/null
@@ -1,132 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-/*
- * Font tests; draws all 32 combinations of five attributes:
- *
- * label_color: (Neutral: cols 1, 3; Red, cols 2, 4)
- * label_mask:  (Neutral: cols 1, 2; Yellow: cols 3, 4)
- *
- * label_border color: (Neutral: odd rows, Blue otherwise)
- * label_border width: (0pt: rows 1-2, 5-6, 1pt otherwise)
- *
- * pad: (0pt: rows 1-4, 1pt otherwise)
- */
-
-// test objects
-void objs()
-{
-  label(P(-0.5,0), "The");
-  masklabel(P(0.5,0), "The");
-}
-
-// attribute-setting commands on bool flags
-void label_color(bool arg)
-{
-  if (arg)
-    label_color(Red());
-
-  else
-    label_color(Neutral());
-}
-
-void label_mask(bool arg)
-{
-  if (arg)
-    label_mask(Yellow(0.3));
-  else
-    label_mask(Neutral());
-}
-
-void set_border(bool col, std::string len)
-{
-  if (col)
-    label_border(Blue(1.2), len);
-
-  else
-    label_border(Neutral(), len);
-}
-
-void label_border(bool col, bool wid)
-{
-  if (wid)
-    set_border(col, "1pt");
-
-  else
-    set_border(col, "0pt");
-}
-
-void pad(bool arg)
-{
-  if (arg)
-    label_pad("6pt");
-
-  else
-    label_pad("0pt");
-}
-
-// we'll use 0, 1 as loop indices; convert to bool
-bool tf(int i)
-{
-  return i == 0 ? false : true;
-}
-
-// where to position the result of a test
-P loc(int i0, int i1, int i2, int i3, int i4)
-{
-  double horiz(0), vert(7);
-  if (tf(i0))
-    horiz += 1;
-
-  if (tf(i1))
-    horiz += 2;
-
-  if (tf(i2))
-    vert -= 1;
-
-  if(tf(i3))
-    vert -= 2;
-
-  if (tf(i4))
-    vert -= 4;
-
-  return P(horiz, vert);
-}
-
-int main()
-{
-  picture(P(0,0), P(4,8), "6 x 9in");
-
-  begin();
-
-  // the tests proper
-  for (int i0=0; i0<2; ++i0)
-    for (int i1=0; i1<2; ++i1)
-      for (int i2=0; i2<2; ++i2)
-	for (int i3=0; i3<2; ++i3)
-	  for (int i4=0; i4<2; ++i4)
-	    {
-	      screen scr(P(-1,-1), P(1,1));
-	      activate(scr);
-
-	      solid(); // may need to reset line style
-	      border(Green(0.6), "0.1pt");
-
-	      backing(Black(0.1));
-	      pen(Black(0.3));
-	      grid(8,8);
-
-	      label_color(tf(i0));
-	      label_mask(tf(i1));
-	      label_border(tf(i2),tf(i3));
-	      pad(tf(i4));
-
-	      objs();
-
-	      scr.scale(0.9);
-	      inset(loc(i0,i1,i2,i3,i4), loc(i0,i1,i2,i3,i4) + P(1,1));
-	      deactivate(scr);
-	    }
-  end();
-}
diff --git a/graphics/epix/samples/layout.xp b/graphics/epix/samples/layout.xp
deleted file mode 100644
index 0967af53e2..0000000000
--- a/graphics/epix/samples/layout.xp
+++ /dev/null
@@ -1,36 +0,0 @@
-/* -*-ePiX-*- */
-/* layout.xp -- June 27, 2007 */
-#include "epix.h"
-using namespace ePiX;
-
-P f(double u, double v)
-{
-  return P((u-v)*(u+v), 2*u*v, u);
-}
-
-int main()
-{
-  picture(P(0,0), P(2,3), "5x7.5in");
-
-  begin();
-
-  domain R(P(-1,-1), P(1,1), mesh(12,12), mesh(24,24));
-
-  for (int i=0; i<2; ++i)
-    for (int j=0; j<3; ++j)
-      {
-        screen my(P(-3,-3), P(3,3));
-        activate(my);
-        border(Red(0.6), "1pt");
-	camera.at(sph(10, (2*j+i+1)*M_PI/8, M_PI/6));
-
-	plot(f, R);
-	arrow(P(0,0,0), 2*E_1);
-	arrow(P(0,0,0), 2*E_2);
-        inset(P(i+0.05,2.05-j), P(i+0.95,2.95-j));
-	deactivate(my);
-      }
-
-  end();
-}
-
diff --git a/graphics/epix/samples/layout2.xp b/graphics/epix/samples/layout2.xp
deleted file mode 100644
index f2203a2a84..0000000000
--- a/graphics/epix/samples/layout2.xp
+++ /dev/null
@@ -1,42 +0,0 @@
-/* -*-ePiX-*- */
-/* layout.xp -- June 27, 2007 */
-#include "epix.h"
-using namespace ePiX;
-
-P F(double s, double t)
-{
-  return P(0.1*s, 0.025*t) + (1/(0.01+s*s+t*t))*P(-t, s);
-}
-
-int main()
-{
-  picture(P(0,0), P(2,3), "5x7in");
-
-  begin();
-
-  for (int k=0; k<3; ++k)
-    for (int j=0; j<2; ++j)
-      {
-        screen my(P(-4, -3), P(2,2));
-        activate(my);
-
-        border(Red(0.6), "1pt");
-        set_crop();
-        plain(Blue(1.8));
-        dart_field(F, P(-4, -3), P(2, 2), 12, 10);
-
-        bold();
-        for (int i=0; i<7; ++i)
-          {
-            pen(RGB(0.05*(7-i), 1 - 0.1*i, 0.15*i));
-            ode_plot(F, P(-0.9-0.025*i,0), 4*(3*j+k+0.5), 30*(3*j+k+0.5));
-          }
-
-        inset(P(j+0.05,1.05-k), P(j+0.95,1.95-k));
-
-	deactivate(my);
-      }
-
-  end();
-}
-
diff --git a/graphics/epix/samples/legend.xp b/graphics/epix/samples/legend.xp
deleted file mode 100644
index a6be848bc9..0000000000
--- a/graphics/epix/samples/legend.xp
+++ /dev/null
@@ -1,72 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-P sin_n(double x, double n)     // Taylor polynomial of sin x
-{
-  const int N((int) floor(n));  // convert y to an index bound
-  const double sqx(-pow(x, 2)); // store -x^2 for efficiency
-  double val(x), summand(x);    // places to store results of evaluation
-
-  // step through odd numbers from 1 to 2N+1
-  for (int i=1; i <= 2*N+1; i += 2)
-    {
-      summand *= (sqx/((i+1)*(i+2))); // (-1)^i x^{2i+1}/(2i+1)!
-      val += summand;
-    }
-
-  return P(x, val);
-}
-
-int main()
-{
-  picture(P(0,-2.5),P(6*M_PI, 1), "5x3.5in");
-
-  begin();
-
-  camera.filter(CMY_Neutral());
-  set_crop();
-  plain(Black(0.5));
-  grid(12, 7);
-
-  // coordinate axis
-  axis Ax(P(0,0), P(6*M_PI,0), 12, P(0,-4), b);
-  Ax.trig().subdivide(4);
-
-  axis Ay(P(0,ymin()), P(0,ymax()), 7, P(-4,0), l);
-  Ay.frac().draw_labels();
-
-  // define a legend and set global attributes
-  legend L;
-  L.backing(Yellow(0.1)).border(Blue(), 1).item_border(0);
-
-  bbold(Green());
-  plot(Sin, 0, xmax(), 120);
-
-  // add a legend item
-  L.path_item("$y=\\sin x$");
-
-  domain R(P(0,1), P(6*M_PI, 41), mesh(60, 40), mesh(240, 40));
-
-  // print in descending degree so paths overlap better
-  for (int i=3; 0 <= i; --i)
-    {
-      pen(RGB(0.25*i, 0, 1-0.25*i));
-      plot(sin_n, R.slice2(5*i+1));
-
-      // add a legend item; key set automatically
-      std::stringstream buf;
-      buf << "$y=p_{" << 10*i+5 << "}(x)$";
-      L.path_item(buf.str());
-    }
-
-  plain(Black());
-  label_mask(White());
-  Ax.draw();
-
-  // place at bottom left
-  L.draw(canvas().bl(), P(2,2), tr);
-
-  pst_format();
-  end();
-}
diff --git a/graphics/epix/samples/levelset.xp b/graphics/epix/samples/levelset.xp
deleted file mode 100644
index c802f5dc52..0000000000
--- a/graphics/epix/samples/levelset.xp
+++ /dev/null
@@ -1,60 +0,0 @@
-/* -*-ePiX-*- */
-/* levelset.xp -- level sets */
-#include "epix.h"
-using namespace ePiX;
-
-const int MAX(3);
-const double k(0.25);
-
-P Fp(double u, double v) 
-{
-  double r(sqrt(fabs(v)));
-  if (v>=0)
-    return P(r*cosh(u), r*sinh(u), k*v);
-
-  else
-    return P(-r*sinh(u), -r*cosh(u), k*v);
-
-}
-
-P Fm(double u, double v) 
-{
-  double r(sqrt(fabs(v)));
-  if (v>=0)
-    return P(-r*cosh(u), r*sinh(u), k*v);
-
-  else
-    return P(-r*sinh(u), r*cosh(u), k*v);
-
-}
-
-double f(double x, double y) 
-{ 
-  return k*(x-y)*(x+y); 
-}
-
-int main()
-{
-  picture(P(-MAX,-MAX), P(MAX, MAX), "2x2in");
-
-  begin();
-
-  camera.at(P(1,-3,5));
-  camera.range(40);
-
-  clip_box(P(MAX,MAX,2*MAX));
-  clip();
-
-  red();
-  plot(f, P(-MAX,-MAX), P(MAX, MAX), mesh(4,4), mesh(40,40));
-
-  domain R(P(-4,-9), P(4,9), mesh(1,12), mesh(90,1));
-
-  bold(); rgb(0.5,0.5,1); 
-  line(P(MAX,-MAX,0), P(-MAX, MAX,0));
-  line(P(MAX, MAX,0), P(-MAX,-MAX,0));
-  plot(Fp, R.slices2());
-  plot(Fm, R.slices2());
-
-  end(); 
-}
diff --git a/graphics/epix/samples/levelset2.xp b/graphics/epix/samples/levelset2.xp
deleted file mode 100644
index ab1a605069..0000000000
--- a/graphics/epix/samples/levelset2.xp
+++ /dev/null
@@ -1,72 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-// Style parameters
-const int MAX(1); // maximum coordinate
-
-domain R(P(-MAX,-MAX), P(MAX, MAX), (24, 24), mesh(72,72));
-
-const double sqrt3(sqrt(3));
-
-// function to be graphed
-P f(double x, double y)
-{
-  return P(x, y, 0.75*y*(y-sqrt3*x)*(y+sqrt3*x));
-}
-
-P color(double u, double v, double w)
-{
-  return P(-0.5*w, 0.25*w, 0.95*w);
-}
-
-int main()
-{
-  picture(P(-2*MAX,-2*MAX), P(2*MAX,2*MAX), "6 x 6in");
-
-  begin();
-
-  border(Green(0.6), "1pt");
-  backing(Black());
-
-  camera.at(sph(4*MAX, M_PI/6, M_PI/6));
-
-  // positioned for viewpt in first orthant
-  yellow();
-  grid(P(-MAX,-MAX,-MAX), P(MAX,MAX,-MAX), 4, 4);
-  grid(P(-MAX,-MAX,-MAX), P(MAX,-MAX,MAX), 4, 4);
-  grid(P(-MAX,-MAX,-MAX), P(-MAX,MAX,MAX), 4, 4);
-
-  axis Ax(P(-MAX,-MAX,MAX), P(MAX,-MAX,MAX), 4, P(0,6), t);
-  axis Ay(P(MAX,-MAX,-MAX), P(MAX,MAX,-MAX), 4, P(-2,-2), bl);
-  axis Az(P(MAX,-MAX,-MAX), P(MAX,-MAX,MAX), 4, P(-2,-2), bl);
-
-  Ax.frac().draw();
-  Ay.frac().draw();
-  Az.frac().draw();
-
-  clip_box(P(MAX,MAX,MAX));
-
-  // wire mesh surface
-  plain(Green());
-  plot(f, R);
-
-  // level bands
-  plain(Red());
-
-  for (int i=-5; i <=5; ++i)
-    {
-      clip_slice(P(0,0,0.2*i), P(0,0,1), 0.1);
-#ifdef FLATFILL
-      fill(RGB(0.25+0.1*i, 0, -0.1*i)); // index-dependent coloring
-      surface(f, R);
-#else
-      surface(f, R, color); // domain- or position-dependent coloring
-#endif
-      clip_restore(); // remove temporary slicing planes, keep clip box
-    }
-
-  pst_format();
-  end();
-}
-
diff --git a/graphics/epix/samples/levelset3.xp b/graphics/epix/samples/levelset3.xp
deleted file mode 100644
index aab13bec4f..0000000000
--- a/graphics/epix/samples/levelset3.xp
+++ /dev/null
@@ -1,89 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-// Style parameters
-const int MESH(12); // number of coordinate grid squares
-const int MAX(3); // maximum coordinate
-
-// camera location (in spherical coordinates); must be in first orthant
-const P VIEWPT(sph(4*MAX, M_PI/6, M_PI/6));
-
-const double sqrt3(sqrt(3));
-
-// function to be graphed
-P f(double x, double y)
-{
-  //  return P(x, y, 0.75*y*(y-sqrt3*x)*(y+sqrt3*x));
-  return P(x,y, 0.9*MAX*exp(-0.5*(x*x+y*y))*x*y);
-  //  return P(x, y, 0.25*(x-y*y)*(x-3*y*y));
-}
-
-P color(double u, double v, double w)
-{
-  return P(-0.5*w, 0.25*w, 0.5*w);
-}
-
-Color Bk(Green(0.7));
-
-int main()
-{
-  // picture(P(-2*MAX,-2*MAX), P(2*MAX,2*MAX), "6 x 6in");
-  picture(P(-MAX,-MAX), P(MAX,MAX), "6 x 6in");
-
-  begin();
-  backing(Bk);
-
-  camera.at(0,-10,4);
-
-  border(Green(0.6), "1pt");
-
-  clip_box(P(MAX,MAX,MAX));
-
-  domain R(P(-MAX,-MAX), P(MAX, MAX), (6*MESH, 6*MESH), mesh(6*MESH, 6*MESH));
-
-  legend L1, L2, L3;
-  L1.backing(Bk);
-  L2.backing(Bk);
-  L3.backing(Bk);
-
-  //  pen(RGB(1, 0.8, 0.2), 0.1);
-  for (int i=-10; i <=10; ++i)
-    {
-      clip_slice(P(0,0,0.1*i), P(0,0,1), 0.1);
-      // fill(RGB(0.25+0.1*i, 0, -0.1*i));
-      rgb(0.25+0.1*i, 0, -0.1*i);
-
-      std::stringstream buf;
-      buf << "$" << 0.1*i - 0.05
-	  << "\\leq z \\leq " << 0.1*i + 0.05 << "$";
-
-      if (i <-3)
-	L1.fill_item(buf.str());
-
-      else if(i<4)
-	L2.fill_item(buf.str());
-
-      else
-	L3.fill_item(buf.str());
-
-      nofill();
-      surface(f, R);
-      clip_restore();
-    }
-
-  camera.at(0,0,1000);
-  font_size("scriptsize");
-  label_color(Black());
-  L1.border(0);
-  L2.border(0);
-  L3.border(0);
-
-  L1.draw(canvas().bl(), P(2,2), tr);
-  L2.draw(canvas().bl()+P(2,0), P(2,2), tr);
-  L3.draw(canvas().bl()+P(4,0), P(2,2), tr);
-
-  pst_format();
-  end();
-}
-
diff --git a/graphics/epix/samples/lighting.flx b/graphics/epix/samples/lighting.flx
deleted file mode 100644
index 80997bebeb..0000000000
--- a/graphics/epix/samples/lighting.flx
+++ /dev/null
@@ -1,132 +0,0 @@
-/* -*-flix-*- */
-// compile with flix -I. [-DAXES] lighting.flx
-// in a directory containing lighting.h
-#include "epix.h"
-#include "lighting.h"
-using namespace ePiX;
-
-// mesh intervals for torus
-int N1(36), N2(12);
-
-// torus
-P F(double x, double y)
-{
-  double R(5-2*Sin(M_PI*y/N2));
-  return P(R*Cos(2*M_PI*x/N1), R*Sin(2*M_PI*x/N1), 2*Cos(M_PI*y/N2));
-}
-
-int main(int argc, char* argv[])
-{
-  if (argc == 3)
-    {
-      char* arg;
-      double temp1, temp2;
-      temp1=strtod(argv[1], &arg);
-      temp2=strtod(argv[2], &arg);
-
-      tix()=temp1/temp2;
-    }
-  picture(P(-10,-10),P(10,10), "4x4in");
-
-  begin();
-  set_crop();
-
-  backing(Black());
-
-  domain R(P(0,N2), P(N1,2*N2), mesh(N1,N2), mesh(2*N1,2*N2));
-
-  // manual layering below may require adjustment if the camera is moved
-  camera.at(P(4,6,4));
-  camera.range(16);
-
-#ifdef AXES
-  yellow();
-  label(P(8,0,0), P(-2,-2), "$\\mathbf{x}$", bl);
-  label(P(0,8,0), P( 2,-2), "$\\mathbf{y}$", br);
-  label(P(0,0,8), P( 0, 4), "$\\mathbf{z}$", t);
-#endif
-
-  // draw grid only
-  pen(Green(), 0.15);
-  plot(F, R);
-
-  // axes (with solid arrowheads) and shaded surface
-#ifdef AXES
-  arrow(P(0,0,0), P(8,0,0));
-  arrow(P(0,0,0), P(0,8,0));
-  arrow(P(0,0,0), P(0,0,8));
-#endif
-
-  rgb(0.8, 0.4, 0);
-  fill();
-  Color chip_color(White());     // true color of torus
-  Color ambient(RGB(1,0.75,0));  // ambient light
-
-  Fog fog(White(), 0.0125);
-
-  // spot light location
-  P spot_at(sph(10, M_PI_4, 2*M_PI*tix())); // traverses a longitude
-
-  // P spot_b=P(5,0,0)+cyl(10, 2*M_PI*tix(), 5); // or latitude
-  // P spot_b(5,-5,10);                        // or stays put
-  Spot spot(Blue(), spot_at);
-
-  std::vector<Chip> surf_mesh;
-  // torus, surface reflectivity .75
-  for (int i=0; i<N1; ++i)
-    for (int j=0; j<N2; ++j)
-      surf_mesh.push_back(Chip(F(i,j), F(i+1,j), F(i+1,j+1), F(i,j+1),
-			       0.75, chip_color));
-
-  sort(surf_mesh.begin(), surf_mesh.end(), chip_distance());
-
-#ifdef SHOW_SPOT
-  // mark spot light's location
-  if (spot_at.x2() <= 0)
-    {
-      blue();
-      box(spot.m_loc);
-    }
-#endif
-
-  // draw shaded surface mesh
-  for (unsigned int i=0; i<surf_mesh.size(); ++i)
-    surf_mesh.at(i).draw(fog, spot, ambient);
-
-#ifdef SHOW_SPOT
-  if (spot_at.x2() > 0)
-    {
-      blue();
-      box(spot.m_loc);
-    }
-#endif
-
-#ifdef AXES
-  // re-draw hidden portions
-  green();
-  line(P(3,0,0), P(8,0,0));
-  line(P(0,3,0), P(0,8,0));
-  line(P(0,0,0), P(0,0,8));
-#endif
-
-  fill(false);
-  // redraw front portion of mesh partially covered by solid surface
-  pen(Green(), 0.15);
-  plot(F, R.resize1(0, 0.25*N1));
-
-  // labels
-  base(White(), 1);
-  line(P(3,0,6), F(0,0.25*N2));
-  line(P(6,0,4), F(0,-0.25*N2));
-
-  label_border(Green(0.6), "0.5pt");
-  label_color(Black());
-  label_mask(RGB(1,0.8,0.2));
-
-  font_size("footnotesize");
-  masklabel(P(3,0,6), P(0,0), "Total curvature $-\\pi$", t);
-  masklabel(P(6,0,4), P(0,0), "Total curvature $\\pi$", t);
-
-  pst_format();
-  end();
-}
diff --git a/graphics/epix/samples/lighting.h b/graphics/epix/samples/lighting.h
deleted file mode 100644
index 6493332a95..0000000000
--- a/graphics/epix/samples/lighting.h
+++ /dev/null
@@ -1,114 +0,0 @@
-double clip_0_1(double t)
-{
-  return (t<0) ? 0 : (t>1 ? 1 : t);
-}
-
-double trunc(double t)
-{
-  if (fabs(t) < 0.0001)
-    t=0;
-
-  return t;
-}
-
-namespace ePiX {
-
-  class Spot {
-  public:
-    Spot(const Color& col, const P& loc) : m_tint(col), m_loc(loc) { }
-
-    Color m_tint;
-    P m_loc;
-  };
-
-  class Fog {
-  public:
-    Fog(const Color& c, const double k) : m_tint(c), m_dens(k) { }
-
-    Color apply_to(const Color& col, const double dist) const
-    {
-      Color me(m_tint);
-      return me.blend(col, exp(-dist*m_dens));
-    }
-
-  private:
-    Color m_tint;
-    double m_dens;
-  };
-
-  // cf. facet class in facet.h
-  class Chip {
-  public:
-    Chip(const P& p1, const P& p2, const P& p3, const P& p4, const double s,
-	 const Color& c)
-      : pt1(p1), pt2(p2), pt3(p3), pt4(p4), m_shine(s), m_tint(c)
-    {
-      m_ctr = 0.25*(p1+p2+p3+p4);
-      P n = (p2-p1)*(p4-p1);
-      n *= recip(norm(n));
-      m_perp=n;
-    }
-
-    double how_far() const { return norm(camera.viewpt()-m_ctr); }
-
-    void draw(const ePiX::Fog& fog,
-	      const ePiX::Spot& spot,
-	      const ePiX::Color& ambient) const
-    {
-      fill(appearance(camera.viewpt(), fog, spot, ambient));
-      ePiX::quad(pt1, pt2, pt3, pt4);
-    }
-
-  private:
-    P pt1, pt2, pt3, pt4; // vertices
-    double m_shine; // shininess
-    Color m_tint; // out color
-
-    P m_ctr; // our location
-    P m_perp; // unit normal
-
-    Color appearance(const P& viewer, const Fog& fog,
-		     const Spot& spot, Color ambient) const
-    {
-      P spot_dir(spot.m_loc - m_ctr);
-      double spot_dist(norm(spot_dir));
-      spot_dir *= recip(spot_dist);
-
-      P view_dir(viewer - m_ctr);
-      double view_dist(norm(view_dir));
-      view_dir *= recip(view_dist);
-
-      // calculate relative intensities
-      //double I_ambt = pow((m_perp|view_dir), 2); // cos^2 of normal angle
-      double I_ambt(fabs(m_perp|view_dir)); // |cos| of normal angle
-
-      // crude but fairly effective
-      //double I_spot = 0.5*(1+((spot_dir*m_perp)|(m_perp*view_dir)));
-
-      // reflect spot_dir across m_perp in the plane they span,
-      // then take (cos(angle to viewer)^4)
-      P refl_dir(-spot_dir + 2*(spot_dir|m_perp)*m_perp);
-      double I_spot(pow((refl_dir|view_dir), 2));
-
-
-      // light from spot that reaches our location and is reflected to viewer
-      Color spot_refl(I_spot*(fog.apply_to(spot.m_tint, spot_dist)));
-
-      // not shiny -> reflect mostly ambient
-      Color refl(I_ambt*ambient.blend(spot_refl, m_shine));
-
-      // Color we reflect toward viewer
-      Color source(m_tint.filter(refl));
-      return fog.apply_to(source, view_dist);
-    }
-  };
-
-  class chip_distance {
-  public:
-    bool operator() (const Chip& arg1, const Chip& arg2)
-      {
-	return arg1.how_far() > arg2.how_far();
-      }
-  };
-} // end of namespace
-
diff --git a/graphics/epix/samples/line_debug.xp b/graphics/epix/samples/line_debug.xp
deleted file mode 100644
index 13af932c78..0000000000
--- a/graphics/epix/samples/line_debug.xp
+++ /dev/null
@@ -1,126 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-/*
- * Line and fill style test; draws all 32 combinations of five attributes:
- *
- * line color: (Neutral: cols 1, 3; Red, cols 2, 4)
- * line style: (Solid: cols 1, 2; dashed: cols 3, 4)
- *
- * base color: (Neutral: odd rows, Blue otherwise)
- * base width: (1pt: rows 1-2, 5-6, 4pt otherwise)
- *
- * fill color: (Neutral: rows 1-4, Yellow otherwise)
- */
-
-// test objects
-void objs()
-{
-  rect(P(0,0), P(1,1));
-  line(P(-1,-1), P(1,-1));
-}
-
-// attribute-setting commands on bool flags
-void line_color(bool arg)
-{
-  if (arg)
-    pen(Red(), 2);
-
-  else
-    pen(Neutral(), 2);
-}
-
-void line_style(bool arg)
-{
-  if (arg)
-    dashed();
-}
-
-void base_color(bool col, double wid)
-{
-  if (col)
-    base(Blue(1.2), wid);
-
-  else
-    base(Neutral(), wid);
-}
-
-void base_pen(bool col, bool wid)
-{
-  if (wid)
-    base_color(col, 4);
-
-  else
-    base_color(col, 1);
-}
-
-void fill_color(bool arg)
-{
-  if (arg)
-    fill(Yellow());
-
-  else
-    fill(Neutral());
-}
-
-// we'll use 0, 1 as loop indices; convert to bool
-bool tf(int i)
-{
-  return i == 0 ? false : true;
-}
-
-// where to position the result of a test
-P loc(int i0, int i1, int i2, int i3, int i4)
-{
-  double horiz(0), vert(7);
-  if (tf(i0))
-    horiz += 1;
-
-  if (tf(i1))
-    horiz += 2;
-
-  if (tf(i2))
-    vert -= 1;
-
-  if(tf(i3))
-    vert -= 2;
-
-  if (tf(i4))
-    vert -= 4;
-
-  return P(horiz, vert);
-}
-
-int main()
-{
-  picture(P(0,0), P(4,8), "6 x 9in");
-
-  begin();
-
-  // the tests proper
-  for (int i0=0; i0<2; ++i0)
-    for (int i1=0; i1<2; ++i1)
-      for (int i2=0; i2<2; ++i2)
-	for (int i3=0; i3<2; ++i3)
-	  for (int i4=0; i4<2; ++i4)
-	    {
-	      screen scr(P(-1,-1), P(1,1));
-	      activate(scr);
-
-	      solid(); // may need to reset line style
-	      border(Green(0.6), "0.1pt");
-
-	      line_color(tf(i0));
-	      line_style(tf(i1));
-	      base_pen(tf(i2),tf(i3));
-	      fill_color(tf(i4));
-
-	      objs();
-
-	      scr.scale(0.9);
-	      inset(loc(i0,i1,i2,i3,i4), loc(i0,i1,i2,i3,i4) + P(1,1));
-	      deactivate(scr);
-	    }
-  end();
-}
diff --git a/graphics/epix/samples/lissajous.xp b/graphics/epix/samples/lissajous.xp
deleted file mode 100644
index c713d760bb..0000000000
--- a/graphics/epix/samples/lissajous.xp
+++ /dev/null
@@ -1,28 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-P f(double t)
-{
-  return P(Sin(3*t), Sin(4*t));
-}
-
-int main()
-{
-  picture(P(-1,-1), P(1,1), "2 x 2in");
-
-  begin();
-  revolutions();
-
-  bold(Red());
-  plot(f, 0, 1, 200);
-
-  arrow_inset(0.2);
-  arrow_width(1.5);
-
-  plain(Blue());
-  tan_field(f, 0, 1, 81);
-
-  end();
-}
-
diff --git a/graphics/epix/samples/log.xp b/graphics/epix/samples/log.xp
deleted file mode 100644
index 4f16921cdf..0000000000
--- a/graphics/epix/samples/log.xp
+++ /dev/null
@@ -1,217 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-// October 28, 2006
-//
-// This file depicts two sheets of the Riemann surface of log, together
-// with the log function over the unit circle. Surface and path elements
-// must be drawn together. However, path-like mesh elements must be drawn
-// after surface elements that lie at the same location in the scene,
-// since otherwise surface elements' edges occlude the path.
-//
-// A mesh_elt class stores the necessary P data as well as a flag marking
-// the element as a segment or a surface patch. Elements are stored in a
-// std::vector (global to the scene) and sorted by distance. To ensure that
-// surface patches are printed first, their true distance is increased by a
-// "fudge" amount (0.25), making the By_distance class see them as farther
-// than they really are.
-//
-// Path elements are drawn in green; surface patches are shaded gray
-// according to the angle between the incoming light (from a point source)
-// and the surface normal.
-//
-// Surface patches are drawn as octagons to make the mesh appear smoother
-// than a quadrilateral mesh. The vertices of a patch are the images of the
-// corners and midpoints of a coordinate quadrilateral, "retracted" inward
-// by a small "gap" EPS (possibly zero). A positive gap simulates surface
-// transparency.
-//
-// (u,v+dv)            (u+0.5*du,v+dv)          (u+du,v+dv)
-//    +----------------------+-----------------------+
-//    | *--------------------*---------------------* |
-//    | |                                          | |
-//    | |                                          | |
-//    | |                                          | |
-//    + * (u+EPS,v+0.5*dv)                         * + (u+du,v+0.5*dv)
-//    | |                                          | |
-//    | |                                          | |
-//    | | (u+EPS,v+EPS)                            | |
-//    | *--------------------*---------------------* |
-//    +----------------------+-----------------------+
-//  (u,v)               (u+0.5*du,v)              (u+du,v)
-
-
-const P LIGHT(2, 2, 0); // location of light, for shading
-const P VIEWPT(15,-10,6);
-
-// surface and path mesh fineness
-const int N1(18);
-const int N2(80);
-
-const int N3(120);
-
-const double du(4.5/N1);
-const double dv(6.0/N2);
-
-const double dt(4.0/N3);
-
-// "gap size" between surface mesh elements
-const double EPS(0); // (0.002);
-
-// visual styles
-void  path_color() { green(0.8); }
-void label_color() { yellow(0.5); }
-void   dot_color() { red(); }
-void  path_width() { pen(1.5); }
-
-// class can represent either a surface element or a path element
-class mesh_elt {
-private:
-  P pt1, pt2, pt3, pt4, pt5, pt6, pt7, pt8, center;
-
-  double fudge; // artificial increment to distance
-  static bool last_was_seg;
-  bool is_segment;
-
-public:
-  double how_far() const
-  {
-    return fudge + norm(center -  camera.viewpt());
-  }
-
-  mesh_elt(P f(double u, double v), double u0, double v0)
-    : pt1(f(u0+EPS,v0+EPS)),       pt2(f(u0+0.5*du,v0+EPS)),
-      pt3(f(u0+du-EPS,v0+EPS)),    pt4(f(u0+du-EPS,v0+0.5*dv)),
-      pt5(f(u0+du-EPS,v0+dv-EPS)), pt6(f(u0+0.5*du,v0+dv-EPS)),
-      pt7(f(u0+EPS,v0+dv-EPS)),    pt8(f(u0+EPS,v0+0.5*dv)),
-      center(0.25*(pt1 + (pt3 + (pt5 + pt7)))),
-      fudge(0.25), is_segment(false) { }
-
-  mesh_elt(P f(double), double t0)
-    : pt1(f(t0)), pt2(f(t0+0.25*dt)), pt3(f(t0+0.5*dt)),
-      pt4(f(t0+0.75*dt)), pt5(f(t0+dt)), pt6(), pt7(), pt8(),
-      center(0.333*(pt1 + (pt3 + pt5))),
-      fudge(0), is_segment(true) { }
-
-  void draw() const
-  { 
-    if (!is_segment) {
-      P normal((pt2 - pt1)*(pt4 - pt1));
-      normal *= 1/norm(normal);
-
-      double dens(0.5*(1-((normal|LIGHT)/norm(LIGHT))));
-
-      if (mesh_elt::last_was_seg)
-	{
-	  mesh_elt::last_was_seg=false;
-	  plain(); // reset pen width
-	}
-
-      black();
-      gray(dens);
-
-      std::vector<P> bd;
-      bd.push_back(pt1);
-      bd.push_back(pt2);
-      bd.push_back(pt3);
-      bd.push_back(pt4);
-      bd.push_back(pt5);
-      bd.push_back(pt6);
-      bd.push_back(pt7);
-      bd.push_back(pt8);
-
-      path temp(bd, true, true); // closed and filled
-      temp.draw();
-    }
-    else { // segment
-      if (!mesh_elt::last_was_seg)
-	{
-	  mesh_elt::last_was_seg=true;
-	  path_width();
-	  path_color();
-	}
-
-      std::vector<P> bd;
-      bd.push_back(pt1);
-      bd.push_back(pt2);
-      bd.push_back(pt3);
-      bd.push_back(pt4);
-      bd.push_back(pt5);
-
-      path temp(bd, false, false);
-      temp.draw();
-    }
-
-  } // end of mesh_elt::draw()
-
-}; // end of class mesh_elt
-
-// initialize static data
-bool mesh_elt::last_was_seg = false;
-
-class By_distance {
-public:
-  bool operator() (const mesh_elt arg1, const mesh_elt arg2)
-  {
-    return (arg1.how_far()) > (arg2.how_far());
-  }
-};
-
-// the maps to be plotted
-P C_log(double u, double v)
-{
-  return polar(exp(u), M_PI*v) + P(0, 0, u+M_PI*v);
-}
-
-P C_log1(double t)
-{
-  return C_log(0,t);
-}
-
-int main() {
-  bounding_box(P(-6, -12),P(6,12));
-  unitlength("1in");
-  picture(P(4,8));
-
-  begin();
-  fill();
-
-  degrees();
-  //  label_angle(90);
-  label(P(0, ymin()), P(0,4), 
-	"$z=\\mathrm{Re}\\,\\log(x+iy) + \\mathrm{Im}\\,\\log(x+iy)$", t);
-  radians();
-  //  label_angle(0);
-
-  viewpoint(VIEWPT);
-  camera.range(20);
-
-  std::vector<mesh_elt> mesh_data;
-
-  // surface elements
-  for (int i=0; i<N1; ++i)
-    for (int j=0; j<N2; ++j)
-      mesh_data.push_back(mesh_elt(C_log, -3+du*i, -3+dv*j));
-
-  // path elements
-  for (int i=0; i<N3; ++i)
-    mesh_data.push_back(mesh_elt(C_log1, -2+i*dt));
-
-  stable_sort(mesh_data.begin(), mesh_data.end(), By_distance());
-
-  for (int i=0; i<mesh_data.size(); ++i)
-    mesh_data.at(i).draw();
-
-  dot_color();
-  marker(C_log(0,-2), BOX);
-  marker(C_log(0, 0), BOX);
-  marker(C_log(0, 2), BOX);
-
-  label_color();
-  label(C_log(0,-2), P(6, 0), "$-2\\pi i$", r);
-  label(C_log(0, 0), P(6, 0), "$0$", r);
-  label(C_log(0, 2), P(-6, 0), "$2\\pi i$", l);
-
-  end();
-}
diff --git a/graphics/epix/samples/lorenz.xp b/graphics/epix/samples/lorenz.xp
deleted file mode 100644
index 6b2afae3cf..0000000000
--- a/graphics/epix/samples/lorenz.xp
+++ /dev/null
@@ -1,70 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-// ODE parameters
-const double A1(10);
-const double A2(28);
-const double A3(2.6666);
-
-// parameter box
-const double MAX(30);
-
-// bounding box (set in screens)
-const double XMAX(50);
-
-// flow time
-const double TMAX(2000);
-
-P F(double x, double y, double z)
-{
-  return 0.01*P(A1*(y-x), x*(A2-z)-y, x*y-A3*z);
-}
-
-domain R(P(-MAX,-MAX,0), P(MAX,MAX,2*MAX), mesh(6, 6, 6));
-
-void draw_frame()
-{
-  dart_field(F, R.resize1(0,MAX), 0.5);
-
-  bold(Red());
-  ode_plot(F, P(10,0,0), 0, TMAX, TMAX);
-
-  pen(Blue());
-  // nearby start points, but trajectories not close
-  ode_plot(F, P(10.5,0,0), 0, TMAX, TMAX);
-
-  plain(Black());
-  dart_field(F, R.resize1(-MAX,0), 0.5);
-}
-
-// initialize the camera
-void init_cam(const P& arg)
-{
-  camera.at(arg);
-  camera.look_at(P(0,0,MAX));
-  camera.range(500);
-}
-
-int main()
-{
-  picture(P(-1,0), P(1,1), "6x3in");
-
-  begin();
-
-  screen  left_eye(P(-XMAX,-XMAX), P(XMAX,XMAX));
-  activate(left_eye);
-  init_cam(P(-100, 90, 63));
-  draw_frame();
-
-  screen right_eye(P(-XMAX,-XMAX), P(XMAX,XMAX));
-  activate(right_eye);
-  init_cam(P(-100, 80, 63));
-  draw_frame();
-
-  // page layout
-  inset(left_eye, P(0,0), P(1,1));
-  inset(right_eye, P(-1,0), P(0,1));
-
-  end();
-}
diff --git a/graphics/epix/samples/medians.xp b/graphics/epix/samples/medians.xp
deleted file mode 100644
index e1e8bf910a..0000000000
--- a/graphics/epix/samples/medians.xp
+++ /dev/null
@@ -1,134 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-const P pt1(2,-1);
-const P pt2(1,2);
-const P pt3(-2,0);
-
-void altitude_color()
-{
-  blue(1.4);
-}
-
-#ifdef BISECTORS
-void bisector_color()
-{
-  green(1.4);
-}
-#endif
-
-// project arg to line through tail, head
-P drop_perp(const P& arg, const P& tail, const P& head)
-{
-  return arg - ((arg - tail)%(head - tail)); // % = orthogonalization
-}
-
-#ifdef BISECTORS
-P bisector(const P& arg, const P& tail, const P& head)
-{
-  P dir_tl(tail - arg);
-  dir_tl *= 1.0/norm(dir_tl);
-
-  P dir_hd(head - arg);
-  dir_hd *= 1.0/norm(dir_hd);
-
-  Segment bisect(arg, arg + 0.5*(dir_tl + dir_hd));
-
-  return Segment(tail, head)*bisect;
-}
-#endif
-
-void rangle(const P& arg, const P& tail, const P& head)
-{
-  const P dir(head - tail);
-  const P loc(arg - ((arg - tail)%dir));
-
-  right_angle(loc, dir, J(dir));
-}
-
-const P q1(drop_perp(pt1, pt2, pt3));
-const P q2(drop_perp(pt2, pt3, pt1));
-const P q3(drop_perp(pt3, pt1, pt2));
-
-#ifdef BISECTORS
-const P r1(bisector(pt1, pt2, pt3));
-const P r2(bisector(pt2, pt3, pt1));
-const P r3(bisector(pt3, pt1, pt2));
-#endif
-
-int main()
-{
-  picture(P(-3,-3), P(3,3), "4x4in");
-
-  begin();
-  set_crop();
-
-  // sides
-  Segment side1(pt2, pt3);
-  Segment side2(pt3, pt1);
-  Segment side3(pt1, pt2);
-
-  // medians
-  Segment med1(pt1, side1.midpoint());
-  Segment med2(pt2, side2.midpoint());
-  Segment med3(pt3, side3.midpoint());
-
-  // altitudes
-  Segment alt1(pt1, q1);
-  Segment alt2(pt2, q2);
-  Segment alt3(pt3, q3);
-
-#ifdef BISECTORS
-  // bisectors
-  Segment bis1(pt1, r1);
-  Segment bis2(pt2, r2);
-  Segment bis3(pt3, r3);
-#endif
-
-  med1.draw();
-  med2.draw();
-  med3.draw();
-
-  bold();
-  side1.draw();
-  side2.draw();
-  side3.draw();
-  plain();
-
-  altitude_color();
-  alt1.draw();
-  alt2.draw();
-  alt3.draw();
-
-  rangle(q1, pt2, pt3);
-  rangle(q2, pt3, pt1);
-  rangle(q3, pt1, pt2);
-
-  circle(q1, q2, q3);
-
-  label(q1, P(-2,4), "$a_1$", t);
-  label(q2, P(-2,-4), "$a_2$", b);
-  label(q3, P(4,0), "$a_3$", r);
-
-#ifdef BISECTORS
-  bisector_color();
-  bis1.draw();
-  bis2.draw();
-  bis3.draw();
-
-  //  circle(r1, r2, r3);
-#endif
-
-  black();
-  font_size("footnotesize");
-  label(pt1, P(2,-2), "$p_1$", br);
-  label(pt2, P(2,2), "$p_2$", tr);
-  label(pt3, P(-4,-2), "$p_3$", l);
-
-  label(side1*med1, P(-4,2), "$m_1$", tl);
-  label(side2*med2, P(-2,-4), "$m_2$", b);
-  label(side3*med3, P(4,0), "$m_3$", r);
-
-  end();
-}
diff --git a/graphics/epix/samples/minkowski.xp b/graphics/epix/samples/minkowski.xp
deleted file mode 100644
index c9e841730b..0000000000
--- a/graphics/epix/samples/minkowski.xp
+++ /dev/null
@@ -1,103 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-const double MAX(3);
-
-// hyperboloid of one sheet/spacelike cone
-P Fp(double x, double y, double z)
-{
-  return P(z*cosh(x)*Cos(y), z*cosh(x)*Sin(y), z*sinh(x));
-}
-
-// hyperboloid of two sheets/timelike cone
-P Fm(double x, double y, double z)
-{
-  return P(z*sinh(x)*Cos(y), z*sinh(x)*Sin(y), z*cosh(x));
-}
-
-// light cone
-P Fz(double x, double y)
-{
-  return fabs(sinh(x))*P(Cos(y), Sin(y), sgn(x));
-}
-
-// hyperbolic lines
-P hl1(double t)
-{
-  return cosh(t)*P(-sqrt(1.25),0,1.5) + sinh(t)*E_2;
-}
-
-P hl2(double t)
-{
-  return cosh(t)*P(-1,0.5,1.5) + (sqrt(0.4)*sinh(t))*P(0.5, 1, 0);
-}
-
-int main()
-{
-  bounding_box(P(-MAX,-MAX),P(MAX,MAX));
-  unitlength("1in");
-  picture(6,6);
-
-  begin();
-  camera.at(10,-3,4);
-  //  camera.range(40);
-
-  revolutions();
-
-  domain R(P(-1.5,0.25,-1), P(1.5,0.75,1), mesh(18, 12, 4), mesh(36, 48, 12));
-
-  fill(White());
-
-  // assemble surfaces as a single object 
-  scenery hyp(Fp, R.slice3(1));
-  hyp.add(Fm, R.resize1(0,1.5).slice3(1));
-  hyp.add(Fm, R.resize1(-1.5,0).slice3(-1));
-  hyp.add(Fz, R.slice3(1));
-
-  hyp.draw();
-  nofill();
-
-  // Draw cuts of intersection with (y,z)-plane.
-  // Simulated 3-D/tube pen: light color drawn over darker shade
-  base(Red(0.6), "3pt");
-  bold(Red());
-
-  plot(Fp, R.slice2(0.25).slice3(1));
-  plot(Fp, R.slice2(0.25).slice3(-1));
-
-  plot(Fm, R.slice2(0.25).slice3(1));
-  plot(Fm, R.slice2(0.25).slice3(-1));
-
-  plot(Fz, R.slice2(0.25).slice3(1));
-  plot(Fz, R.slice2(0.75).slice3(-1));
-
-  // to clip lines
-  clip_box(P(-10,-10,-cosh(1.5)), P(10,10,cosh(1.5)));
-
-  base(Green(0.6), "3pt");
-  bold(Green());
-
-  plot(hl1, -1.5, 1.5, 120);
-  plot(hl2, -1.5, 1.5, 120);
-
-  // Labels with "overlay" arrows
-  font_size("scriptsize");
-
-  black();
-  camera.at(P(0,0,10000));
-  label(P(1.5,0), P(4,16), "Future timelike unit vectors", r);
-  label(P(1.5,0), P(4,0), "Unit spacelike vectors", r);
-  label(P(1.5,0), P(4,-16), "Lightlike vectors", r);
-  label(P(1.5,0), P(4,-32), "Past timelike unit vectors", r);
-
-  base(White(), "2pt"); 
-  bold(Black());
-  arrow(P(1.5,0), P(1,0), 0.5);
-  arrow(P(1.5, 0.25), P(1,1.35), 0.5);
-  arrow(P(1.5,-0.25), P(1,-0.75), 0.5);
-  arrow(P(1.5,-0.5), P(1,-1.05), 0.5);
-
-  pst_format();
-  end();
-}
diff --git a/graphics/epix/samples/mirrorball.flx b/graphics/epix/samples/mirrorball.flx
deleted file mode 100644
index 858ee4e904..0000000000
--- a/graphics/epix/samples/mirrorball.flx
+++ /dev/null
@@ -1,93 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-const double r_0(1); //0.75;
-const double golden(0.5*(1+sqrt(5)));
-
-Sphere S0(P(0,0,0), sqrt(3));
-
-Sphere S1(P( 1, golden, 0), r_0);
-Sphere S2(P(-1, golden, 0), r_0);
-Sphere S3(P( 1,-golden, 0), r_0);
-Sphere S4(P(-1,-golden, 0), r_0);
-
-Sphere S5(P( 0, 1, golden), r_0);
-Sphere S6(P( 0,-1, golden), r_0);
-Sphere S7(P( 0, 1,-golden), r_0);
-Sphere S8(P( 0,-1,-golden), r_0);
-
-Sphere S9(P( golden, 0, 1), r_0);
-Sphere Sa(P( golden, 0,-1), r_0);
-Sphere Sb(P(-golden, 0, 1), r_0);
-Sphere Sc(P(-golden, 0,-1), r_0);
-
-Circle C1(S0*S1);
-Circle C2(S0*S2);
-Circle C3(S0*S3);
-Circle C4(S0*S4);
-Circle C5(S0*S5);
-Circle C6(S0*S6);
-Circle C7(S0*S7);
-Circle C8(S0*S8);
-Circle C9(S0*S9);
-Circle Ca(S0*Sa);
-Circle Cb(S0*Sb);
-Circle Cc(S0*Sc);
-
-// bold circle if facing camera, otherwise plain
-void sphere_draw(const Circle& C)
-{
-  if ((C.center()|camera.viewpt()) >= 0)
-    bold();
-  else plain();
-
-  C.draw();
-}
-
-void icosa()
-{
-  // S0.draw();
-  sphere_draw(C1);
-  sphere_draw(C2);
-  sphere_draw(C3);
-  sphere_draw(C4);
-  sphere_draw(C5);
-  sphere_draw(C6);
-  sphere_draw(C7);
-  sphere_draw(C8);
-  sphere_draw(C9);
-  sphere_draw(Ca);
-  sphere_draw(Cb);
-  sphere_draw(Cc);
-}
-
-int main(int argc, char* argv[])
-{
-  if (argc == 3)
-    {
-      char* arg;
-      double temp1, temp2;
-      temp1=strtod(argv[1], &arg);
-      temp2=strtod(argv[2], &arg);
-
-      tix()=temp1/temp2;
-    }
-
-  picture(P(-2,-2),P(2,2), "6x6in");
-
-  begin();
-  set_crop();
-  revolutions();
-
-  // draw frames
-  camera.at(sph(12, 0.5*tix(), 0.05));
-  red(-1.4); // nearly cyan
-  icosa();
-
-  camera.at(sph(12, 0.01+0.5*tix(), 0.05));
-  red(1.4);
-  icosa();
-
-  end();
-}
diff --git a/graphics/epix/samples/newton.xp b/graphics/epix/samples/newton.xp
deleted file mode 100644
index d9af0b087f..0000000000
--- a/graphics/epix/samples/newton.xp
+++ /dev/null
@@ -1,43 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-double f(double t)
-{
-  return 1 + t*(-3 + t*t);
-}
-
-double df(double t)
-{
-  return Deriv(f)(t).x2();
-}
-
-int main()
-{
-  picture(P(1.5,0), P(2,3), "2.5 x 2.5in");
-
-  begin();
-  h_axis(2);
-
-  double x0(2),  x1(x0-f(x0)/df(x0));
-  label(P(x0,0), P(0,-4), "$x_i$", b);
-
-  for (int i=0; i < 3; ++i)
-    {
-      dashed();
-      line(P(x0,0), P(x0,f(x0)));
-      solid();
-      line(P(x0,f(x0)), P(x0-f(x0)/df(x0),0));
-
-      x0 -= f(x0)/df(x0); // Newton's method
-    }
-
-  bold();
-  plot(f, xmin(), xmax()+0.05, 60);
-
-  label(P(1.75, f(1.75)), P(-2,2), "$y=f(x)$", tl);
-  label(P(x1,0), P(0,-4), "$x_{i+1}$", b);
-  label(P(1.75, df(2)*(1.75-x1)), P(0,-4), "Slope $= f'(x_i)$", br);
-
-  end();
-}
diff --git a/graphics/epix/samples/objects.xp b/graphics/epix/samples/objects.xp
deleted file mode 100644
index ddf38cbee1..0000000000
--- a/graphics/epix/samples/objects.xp
+++ /dev/null
@@ -1,32 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-int main()
-{
-  picture(P(0,0), P(5,2), "3.75 x 1.5in");
-
-  begin();
-
-  // roof
-  triangle(P(0.9, 1), P(3.1, 1), P(2, 1.5)); // vertices
-
-  // sun
-  circle(P(4,1.5), 0.25); // center and radius
-
-  // house
-  rect(P(1,0), P(3,1)); // opposite corners
-  // grid(P(1,0), P(3,1), 1, 10); // corners, numbers of subdivisions 
-
-  // door
-  fill(Black(0.1));
-  rect(P(2.3,0), P(2.7,0.8)); // corners
-
-  fill(White());
-  // window
-  bold();
-  grid(P(1.4,0.2), P(2, 0.6), 2, 2);
-
-  line(P(xmin(),0), P(xmax(),0));
-  end();
-}
diff --git a/graphics/epix/samples/oscillator.xp b/graphics/epix/samples/oscillator.xp
deleted file mode 100644
index c174613cb0..0000000000
--- a/graphics/epix/samples/oscillator.xp
+++ /dev/null
@@ -1,89 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-double f(double t, double a) { return 2*exp(-0.5*t)*Sin(a*t); }
-
-// Completely fabricated data
-// "Predicted"
-double f1(double t)
-{
-  return f(t,2);
-}
-
-// "Observed"
-double f2(double t)
-{
-  return f1(t)+0.1*Cos(3*t);
-}
-
-//"error"
-double err(double t)
-{
-  return 0.125*(1+fabs(f1(t)));
-}
-
-// Number of error bars
-const int samples(8);
-
-// Half-size of bounding box
-const int N(2);
-
-int main()
-{
-  picture(P(0,-N),P(2*N,N), "2.5 x 2.5in");
-
-  begin();
-
-  // displacement for miscellaneous labels/objects
-  const double delta(0.0625*xsize());
-
-  // graph paper
-  pen(Black(0.25));
-  grid(5*N*(int)xsize(),5*N*ysize());
-
-  pen(Black());
-  grid(N*(int)xsize(), N*(int)ysize());
-
-  // axes, names, and labels
-  bold();
-  dart(P(xmin(),0), P(xmax()+delta,0));
-  dart(P(0,ymin()), P(0,ymax()+delta));
-
-  font_size("scriptsize");
-  h_axis_masklabels(P(xmin()+1,0), P(xmax(),0), xsize()-1, P(0,2), c);
-  v_axis_labels(P(0,ymin()), P(0,ymax()), ysize(), P(-2, 0), l);
-
-  font_size("footnotesize");
-  label(P(xmax()+delta,0), P(2,0), "Time (sec)", r);
-  label_angle(M_PI_2);
-  label(P(0,0), P(-8,0), "Displacement (cm)",l);
-  label_angle(0);
-
-  legend L;
-  L.item_border(0);
-
-  // "Predicted" curve
-  pen(RGB(0.2, 0.7, 0.8));
-  plot(f1, xmin(), xmax(), 120);
-  L.path_item("Predicted");
-
-  // "error bars"
-  red();
-  L.mark_item(CIRC, "Measured");
-
-  for (int i=1; i < samples; ++i)
-    {
-      double t(xmin() + i*xsize()/samples);
-      v_error_bar(P(t, f2(t)), err(t), CIRC, 4); // 4 pt wide
-    }
-
-  black();
-  L.draw(canvas().br(), P(-2,2), tl);
-
-  font_face("sc");
-  label(P(0.5*(xmin()+xmax()), ymax()), P(0,2),
-	"A damped harmonic oscillator", t);
-
-  end();
-}
diff --git a/graphics/epix/samples/parabola.xp b/graphics/epix/samples/parabola.xp
deleted file mode 100644
index 474a89c132..0000000000
--- a/graphics/epix/samples/parabola.xp
+++ /dev/null
@@ -1,32 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-// the function to be plotted
-double f(double x)
-{
-  return x*x;
-}
-
-int main() 
-{
-  picture(P(-2,0), P(2,4), "2.5x2.5in");
-
-  begin();
-
-  pen(Black(0.3));
-  grid(8,8); // and coarse
-
-  pen(Black());
-  axis Ax(P(xmin(),0), P(xmax(),0), 4, P(0,-4), b);
-  axis Ay(P(0,ymin()), P(0,ymax()), 4, P(4, 0), r);
-
-  font_size("scriptsize");
-  Ax.draw();
-  Ay.unmark(0).draw();
-
-  bold(Red());
-  plot(f, xmin(), xmax(), 40);
-  
-  end();
-}
diff --git a/graphics/epix/samples/pascal.xp b/graphics/epix/samples/pascal.xp
deleted file mode 100644
index 7c597077a0..0000000000
--- a/graphics/epix/samples/pascal.xp
+++ /dev/null
@@ -1,53 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-int main() 
-{
-  picture(P(-2,-2),P(2,2), "3 x 3in");
-
-  begin();
-  set_crop();
-
-  P V(2,-0.25),   W(3,1);
-  P P1(-1.5,-1),  P2(P1 + V),       P3(P1 + 1.5*V);    // points
-  P Q1(-1,1),     Q2(Q1 + 0.5*W),   Q3(Q1 + W);
-
-  Segment L12(P1, Q2),   L13(P1, Q3);
-  Segment L21(P2, Q1),   L23(P2, Q3);
-  Segment L31(P3, Q1),   L32(P3, Q2);
-
-  // points of intersection
-  P R1(L12*L21), R2(L13*L31), R3(L32*L23);
-
-  dot(P1, P(0,-2), "$P_1$", b);
-  dot(P2, P(0,-2), "$P_2$", b);
-  dot(P3, P(0,-2), "$P_3$", b);
-
-  dot(Q1, P(0,2), "$Q_1$", t);
-  dot(Q2, P(0,2), "$Q_2$", t);
-  dot(Q3, P(0,2), "$Q_3$", t);
-
-  red();
-  L12.draw();
-  L21.draw();
-  L13.draw();
-
-  L31.draw();
-  L32.draw();
-  L23.draw();
-
-  green();
-  Line(P1,P3);
-  Line(Q1,Q3);
-
-  blue();
-  dot(R1, P(4,2), "$p_1$", r);
-  dot(R2, P(4,2), "$p_2$", r);
-  dot(R3, P(4,2), "$p_3$", r);
-
-  dashed();
-  Line(R1,R3);
-
-  end();
-}
diff --git a/graphics/epix/samples/pendulum.flx b/graphics/epix/samples/pendulum.flx
deleted file mode 100644
index ac0751d435..0000000000
--- a/graphics/epix/samples/pendulum.flx
+++ /dev/null
@@ -1,62 +0,0 @@
-/* -*-flix-*- */
-#include "epix.h"
-using namespace ePiX;
-
-P F(double u, double v)
-{
-  return P(v, -Sin(u));
-}
-
-double theta0(-5*M_PI/6);
-double EPS(0.01); // to avoid singularity of f at theta0
-
-P posn0(theta0, 0);
-
-P pivot(0,5.5);
-double ell(3);
-
-double K(-Cos(theta0));
-
-double f(double t)
-{
-  return 1.0/sqrt(2*(K+Cos(t)));
-}
-
-int main(int argc, char* argv[])
-{
-  if (argc == 3)
-    {
-      char* arg;
-      double temp1, temp2;
-      temp1=strtod(argv[1], &arg);
-      temp2=strtod(argv[2], &arg);
-
-      tix()=temp1/temp2;
-    }
-  picture(P(-6.5,-2.5), P(6.5, 8.5), "6.5 x 5.5in");
-
-  begin();
-
-  // calculate period, avoiding singularity at theta0
-  double period(4*(sqrt(2*EPS/(-Sin(theta0)))+Integral(f).eval(-theta0-EPS)));
-
-  border(Black(0.1), "1pt");
-
-  P posn(flow(F, posn0, period*tix(), 120*tix())); // phase position
-  double x_t(-Sin(posn.x1()));
-  double y_t( Cos(posn.x1()));
-
-  slope_field(F, P(-2*M_PI,-2), P(2*M_PI,2), 48, 12);
-
-  bold();
-  line(pivot, pivot-ell*P(x_t, y_t));
-
-  red();
-  ode_plot(F, posn0, period, 120);
-
-  blue();
-  box(posn);
-  box(pivot-ell*P(x_t, y_t));
-
-  end();
-}
diff --git a/graphics/epix/samples/planes.xp b/graphics/epix/samples/planes.xp
deleted file mode 100644
index 385a32194e..0000000000
--- a/graphics/epix/samples/planes.xp
+++ /dev/null
@@ -1,29 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-const int N(20);
-
-int main()
-{
-  picture(P(-2,-2), P(2,2), "6x6in");
-
-  begin();
-
-  border();
-  fill();
-
-  camera.at(P(10,-6,4));
-  clip_box(P(-1,-1,-1), P(1,1,1));
-
-  Plane C(P(-1,-1,-1), P(1,1,1));
-  for (int i=1; i<N; ++i)
-    {
-      rgb(i*1.0/N, 0.2, 1-i*1.0/N);
-      C.shift((2.0/N)*P(1,1,1));
-      C.draw();
-    }
-
-  pst_format();
-  end();
-}
diff --git a/graphics/epix/samples/plotting.xp b/graphics/epix/samples/plotting.xp
deleted file mode 100644
index ad310f7b02..0000000000
--- a/graphics/epix/samples/plotting.xp
+++ /dev/null
@@ -1,26 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-double f(double x)
-{
-  return 0.75*Sin(x) - 0.25*Sin(2*x);
-}
-
-int main()
-{
-  picture(P(-2,-1),P(2,1), "5x1in");
-
-  begin();
-
-  h_axis(16);
-  v_axis(4);
-
-  h_axis_labels(4, P(0,-4), b); // shift labels down 4pt, align below
-
-  revolutions(); // set angle units
-  red();
-  plot(f, xmin(), xmax(), 120); // use 120 intervals
-
-  end();
-}
diff --git a/graphics/epix/samples/plotting2.xp b/graphics/epix/samples/plotting2.xp
deleted file mode 100644
index 41891142f5..0000000000
--- a/graphics/epix/samples/plotting2.xp
+++ /dev/null
@@ -1,29 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-P f(double r, double th)
-{
-  return P(r*Cos(th), r*Sin(th), pow(r, 3)*Cos(3*th));
-}
-
-int main()
-{
-  picture(P(-1,-1),P(1,1), "2x1in");
-
-  begin();
-
-  domain R(P(0,0), P(1, 2*M_PI), mesh(8,40), mesh(16,120));
-
-  camera.at(3,1,2); // set the viewpoint
-
-  arrow(P(0,0,0), P(1.25,0,0));
-  arrow(P(0,0,0), P(0,1.25,0));
-
-  plain(Blue(1.2));
-  fill(Yellow()); // shade
-  surface(f, R);
-
-  pst_format();
-  end();
-}
diff --git a/graphics/epix/samples/plotting3.xp b/graphics/epix/samples/plotting3.xp
deleted file mode 100644
index bd095e722c..0000000000
--- a/graphics/epix/samples/plotting3.xp
+++ /dev/null
@@ -1,43 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-P sin_n(double x, double n)     // Taylor polynomial of sin x
-{
-  const int N((int) floor(n));  // convert y to an index bound
-  const double sqx(-pow(x, 2)); // store -x^2 for efficiency
-  double val(x), summand(x);    // places to store results of evaluation
-
-  // step through odd numbers from 1 to 2N+1
-  for (int i=1; i <= 2*N+1; i += 2)
-    {
-      summand *= (sqx/((i+1)*(i+2))); // (-1)^i x^{2i+1}/(2i+1)!
-      val += summand;
-    }
-
-  return P(x, val);
-}
-
-int main()
-{
-  picture(P(0,-1), P(6*M_PI, 1), "5x1in");
-
-  begin();
-
-  set_crop();
-  h_axis(4);
-  v_axis(1);
-
-  bold();
-  green();
-  plot(Sin, 0, xmax(), 120);
-
-  domain R(P(0,1), P(6*M_PI, 41), mesh(60, 40), mesh(120, 40));
-  for (int i=0; i<4; ++i)
-    {
-      pen(RGB(0.25*i, 0, 1-0.25*i));
-      plot(sin_n, R.slice2(5*i+1)); // plot with 2nd var = 5i+1
-    }
-
-  end();
-}
diff --git a/graphics/epix/samples/polar.xp b/graphics/epix/samples/polar.xp
deleted file mode 100644
index d2c1934552..0000000000
--- a/graphics/epix/samples/polar.xp
+++ /dev/null
@@ -1,29 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-double f(double t) 
-{ 
-  return 2*Cos(3*t); 
-}
-
-int main() 
-{
-  picture(P(-2,-2), P(2,2), "2x2in");
-
-  begin();
-  degrees();
-
-  black(0.3);  
-  polar_grid(2, 4, 24); // radius, rings, sectors
-
-  black();
-  bottom_axis(4, P(0,-4)).subdivide(2).draw();
-  left_axis(4, P(-4,0)).subdivide(2).draw();
-
-  bold();
-  polarplot(f, 0, 180, 120); // plot over [0, 180] using 120 intervals
-
-  end();
-}
-
diff --git a/graphics/epix/samples/pole.xp b/graphics/epix/samples/pole.xp
deleted file mode 100644
index 435c258a68..0000000000
--- a/graphics/epix/samples/pole.xp
+++ /dev/null
@@ -1,60 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-const int M(8);
-double MAX(1.5), Bd(2);
-
-P F(double x, double y) // fake pole
-{
-  return P(x, y, x/(0.01+x*x+y*y));
-}
-
-P pt1(-MAX,-MAX), pt2(MAX, MAX);
-domain R(pt1, pt2, mesh(2*M,2*M), mesh(6*M,6*M));
-
-int main()
-{
-  picture(P(-Bd,-Bd), P(Bd,Bd), "2.5x2.5in");
-
-  begin();
-
-  label(P(xmax(), 2.5), P(-2,-2),
-        "$z=\\mathrm{Re}\\,\\displaystyle\\frac{1}{x+iy}$", bl);
-
-  camera.at(P(6,8,5));
-
-  clip_box(P(-Bd,-Bd,-Bd), P(Bd,Bd,0));
-
-  plain(Magenta());
-  fill(White());
-  surface(F, R); // bottom half
-
-  grid(pt1, pt2, M, M); // axes
-
-  pen(White(0.75), "0.15pt");
-  plot(F,R);    // simulate transparency
-
-  clip_box(P(-Bd,-Bd,-Bd), P(Bd,Bd,2*Bd)); 
-  plain(Magenta());
-
-  // axes and labels
-  arrow(P(-Bd,0,0), P(Bd,0,0));
-  label(P(Bd,0), P(-4,-2), "$x$", l); 
-
-  arrow(P(0,-Bd,0), P(0,Bd,0));
-  label(P(0,Bd), P( 2,-2), "$y$", br);
-
-  arrow(P(0, 0, 0), P(0,0,2.5));
-  label(P(0,0,2.5), P(0,4), "$z$", t);
-
-  clip_box(P(-Bd,-Bd,0),P(Bd,Bd,Bd));
-
-  surface(F,R); // top half
-
-  bbold(Red());
-  plot(F, R.resize1(0.25,MAX).slice2(0));
-
-  pst_format();
-  end();
-}
diff --git a/graphics/epix/samples/polyhedra.xp b/graphics/epix/samples/polyhedra.xp
deleted file mode 100644
index c2a788986e..0000000000
--- a/graphics/epix/samples/polyhedra.xp
+++ /dev/null
@@ -1,129 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-// compile with, e.g., elaps -DALL polyhedra.xp
-
-const double MAX(1.25);
-
-#define A5
-
-// draw everyone
-#ifdef ALL
-#define A4
-#define A5
-#endif /* ALL */
-
-// draw three polyhedra with A4 symmetry
-#ifdef A4
-#define COLOR
-#define TETRA
-#define CUBE
-#define OCTA
-#endif /* A4 */
-
-// draw two polyhedra with A5 symmetry
-#ifdef A5
-#ifndef COLOR
-#define COLOR
-#endif /* ndef COLOR */
-#define DODECA
-#define ICOSA
-#endif /* A5 */
-
-int main()
-{
-  picture(P(-MAX,-MAX),P(MAX,MAX), "6 x 6in");
-
-  begin();
-  const double gam(0.5*(1+sqrt(5)));
-
-  grid();
-  camera.at(P(8,3,2));
-  camera.range(20);
-
-  Sphere S;
-  frame f;
-  frame f2(E_2, E_1, E_3);
-
-#ifdef TETRA
-#ifdef COLOR
-  rgb(1,0.7,0.7);
-#endif /* COLOR */
-  back_tetra(S, f);
-  back_tetra(S, f2);
-#endif
-
-#ifdef CUBE
-#ifdef COLOR
-  rgb(0.7,0.7,1);
-#endif /* COLOR */
-  back_cube(S, f);
-#endif
-
-#ifdef OCTA
-#ifdef COLOR
-  rgb(0.7,1,0.7);
-#endif /* COLOR */
-  back_octa(S, f);
-#endif
-
-#ifdef DODECA
-#ifdef COLOR
-  rgb(0.7,1,1);
-#endif /* COLOR */
-  back_dodeca(S, f);
-#endif
-
-#ifdef ICOSA
-#ifdef COLOR
-  rgb(1,1,0.7);
-#endif /* COLOR */
-  back_icosa(S, f);
-#endif
-
-  bold();
-
-#ifdef TETRA
-#ifdef COLOR
-  red();
-#endif /* COLOR */
-  front_tetra(S, f);
-  front_tetra(S, f2);
-#endif
-
-#ifdef CUBE
-#ifdef COLOR
-  blue();
-#endif /* COLOR */
-  front_cube(S, f);
-#endif
-
-#ifdef OCTA
-#ifdef COLOR
-  green(0.6);
-#endif /* COLOR */
-  front_octa(S, f);
-#endif
-
-#ifdef DODECA
-#ifdef COLOR
-  rgb(0, 0.7, 0.7);
-#endif /* COLOR */
-  front_dodeca(S, f);
-#endif
-
-#ifdef ICOSA
-#ifdef COLOR
-  rgb(1, 0.9, 0);
-#endif /* COLOR */
-  front_icosa(S, f);
-#endif
-
-#ifdef COLOR
-  green(0.8);
-#endif
-  S.draw();
-
-  end();
-}
diff --git a/graphics/epix/samples/riemann.flx b/graphics/epix/samples/riemann.flx
deleted file mode 100644
index f7e4b47161..0000000000
--- a/graphics/epix/samples/riemann.flx
+++ /dev/null
@@ -1,68 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-P F(double t, double r, double theta)
-{ 
-  return P(r*r*Cos(2*theta), 
-           r*r*Cos(t)*Sin(2*theta) + r*Sin(t)*Sin(theta),
-           r*Cos(theta));
-}
-
-domain R(P(0,0,0), P(1, 1.5, 1), mesh(24, 8, 32), mesh(24, 40, 80));
-
-int main(int argc, char* argv[])
-{
-  if (argc == 3)
-    {
-      char* arg;
-      double temp1, temp2;
-      temp1=strtod(argv[1], &arg);
-      temp2=strtod(argv[2], &arg);
-
-      tix()=temp1/temp2;
-    }
-
-  domain R1(R.slice1(tix()));
-
-  picture(P(-4,-4),P(4,4), "5x5in");
-
-  begin();
-  revolutions();
-
-  grid(1,1);
-
-  const P ctr(3.25,-3.25); // "clock" center
-  bold();
-  circle(ctr, 0.5);        // clock face
-
-  line(ctr, ctr+polar(0.4, tix())); // hands
-  label(ctr+polar(0.6, tix()), "$y$");
-
-  line(ctr, ctr+polar(0.4, tix()+0.25));
-  label(ctr+polar(0.6, tix()+0.25), "$w$");
-
-  viewpoint(4,5,3);
-  camera.range(20);
-
-  line(P(0,0,0), P(3,0,0));
-  line(P(0,0,0), P(0,3,0));
-  line(P(0,0,0), P(0,0,2));
-
-  plain(Red());
-  plot(F, R1.resize3(0, 0.5));
-
-  blue();
-  plot(F, R1.resize3(0.5, 1));
-
-  bold(Magenta());
-  plot(F, R.slice3(0));
-  plot(F, R.slice3(0.5));
-
-  black();
-  masklabel(P(3,0,0), "$x$");
-  masklabel(P(0,3,0), "$y$");
-  masklabel(P(0,0,2), P(-4,0), "$z=\\textrm{Re}\\,\\sqrt{x+iy}$", tr);
-
-  end();
-}
diff --git a/graphics/epix/samples/saddle.xp b/graphics/epix/samples/saddle.xp
deleted file mode 100644
index b486cc4c9e..0000000000
--- a/graphics/epix/samples/saddle.xp
+++ /dev/null
@@ -1,70 +0,0 @@
-/* -*-ePiX-*- */
-// fake 3D by layering
-#include "epix.h"
-using namespace ePiX;
-
-// function to plot
-P F(double u, double v)
-{
-  return P(u, v, 0.25*(u+v)*(u-v));
-}
-
-P TF(double u, double v)
-{
-  return P(u, v);
-}
-
-int main()
-{
-  picture(P(-3,-2),P(3,2), "6x4in");
-
-  begin();
-  backing(Black());
-
-  label_color(White());
-  label(P(0, ymax()), P(0,-4),
-	"\\textbf{A quadratic saddle cut by a tangent plane}", b);
-
-  camera.at(P(6,12,8));
-  camera.look_at(P(0,0,-0.25));
-
-  domain R(P(-2,-2), P(2,2), mesh(24,24), mesh(48,48));
-
-  // clip to lower half space
-  clip_face(P(0,0,0), -E_3); // 2nd arg is inward normal vector
-
-  // draw shaded saddle
-  fill();
-  surface(F, R);
-
-  // and re-draw the wiremesh in color
-  bold();
-  green(); // change label color as well
-  plot(F, R);
-  label(F(0,2), P(0,-4), "$\\mathbf{z<0}$", b);
-
-  // (x,y)-plane
-  red();
-  plot(TF, R);
-  label(P(2,0,0), P(-4,-2), "$\\mathbf{z=0}$", bl);
-
-  clip_restore(); // remove old restriction
-  clip_face(P(0,0,0), E_3); // and set new one
-
-  fill(Blue()); // set pen and fill colors
-  surface(F, R);
-
-  // fake transparency: re-draw (x,y)-plane lightly
-  pen(Red(), 0.2);
-  plot(TF, R);
-
-  // and plot top half of wiremesh in color
-  bold(Blue());
-  plot(F, R);
-
-  rgb(0.5,0.5,1);
-  label(F(-2,0), P(4,4), "$\\mathbf{z>0}$", tr);
-
-  pst_format();
-  end();
-}
diff --git a/graphics/epix/samples/semicirc.xp b/graphics/epix/samples/semicirc.xp
deleted file mode 100644
index 8cac63ae9d..0000000000
--- a/graphics/epix/samples/semicirc.xp
+++ /dev/null
@@ -1,28 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-double f(double x)
-{
-  return sqrt(1-x*x);
-}
-
-double width(0.6), height(f(width)), posn(0.5), y_posn(f(posn));
-
-int main()
-{
-  picture(P(-1, 0), P(1, 1), "2.5 x 1.25in");
-
-  begin();
-
-  h_axis(4);  
-  v_axis(2);  
-  h_axis_labels(xsize(), P(0, -4), b);
-
-  arc(P(0,0), 1, 0, M_PI);
-  bold();
-  rect(P(-width,0), P(width, height));
-
-  label(P(posn, y_posn), P(2,4), "$y=\\sqrt{1-x^2}$", tr);
-
-  end();
-}
diff --git a/graphics/epix/samples/shadeplot.xp b/graphics/epix/samples/shadeplot.xp
deleted file mode 100644
index 7beb97e87f..0000000000
--- a/graphics/epix/samples/shadeplot.xp
+++ /dev/null
@@ -1,61 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-double k(4);         // change width of hump
-double dx(0.05);     // width of thin shaded region
-double x(1/sqrt(k)); // position of thin shaded region
-
-const double dy(0.5);
-
-double f(double t)
-{
-  return sqrt(fabs(k)/(2*M_PI))*exp(-k*t*t);
-}
-
-P pt1(x, f(x)+2*dy);
-P pt2(x+dx,f(x)+dy);
-P pt3(x+3*dx,f(x));
-
-Color shade1(Black(0.1));
-Color shade2(Black(0.4));
-Color shade3(Black(0.6));
-
-int main()
-{
-  picture(P(0,0), P(1,1), "150x150pt");
-
-  begin();
-  legend L;
-  L.backing(Neutral());
-
-  fill(shade1); 
-  shadeplot(f, xmin(), x, 90);
-  L.fill_item("$=\\displaystyle\\int_a^x f(t)\\,dt$");
-
-  fill(shade2);
-  rect(P(x,0), P(x+dx, f(x)));
-  L.fill_item("= $f(x)\\,dx\\vphantom{\\Bigg|}$");
-
-  fill(shade3);
-  shadeplot(f, x, x+dx, 10);
-  L.fill_item("= $F(x+dx)-F(x)$");
-
-  bold();
-  plot(f, xmin(), xmax(), 120);
-
-  plain();
-  h_axis(4);
-  v_axis(4);
-
-  font_size("scriptsize");
-  L.draw(canvas().tr(), P(-2,-2), bl);
-
-  font_size("footnotesize");
-  label(P(xmin(),0), P(0,-5), "$a$", b);
-  label(P(x,0), P(0,-5), "$x$", b);
-  label(P(x+dx,0), P(0,-2), "$x+dx$", br);
-
-  pst_format();
-
-  end();
-}
diff --git a/graphics/epix/samples/slopefield.xp b/graphics/epix/samples/slopefield.xp
deleted file mode 100644
index 5ecfd597c1..0000000000
--- a/graphics/epix/samples/slopefield.xp
+++ /dev/null
@@ -1,29 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-P F(double s, double t)
-{
-  return P(0.1*s, 0.025*t) + (1/(0.01+s*s+t*t))*P(-t, s);
-}
-
-int main()
-{
-  picture(P(-4, -3), P(2,2), "3x2.5in");
-
-  begin();
-
-  blue(1.8);
-  dart_field(F, P(xmin(), ymin()), P(xmax(), ymax()), 4*xsize(), 4*ysize());
-  set_crop();
-
-  bold();
-  for (int i=0; i<7; ++i)
-    {
-      rgb(0.05*(7-i), 1 - 0.1*i, 0.15*i);
-      ode_plot(F, P(-0.9-0.025*i,0), 20, 200);
-    }
-
-  end();
-}
-
diff --git a/graphics/epix/samples/sphere.xp b/graphics/epix/samples/sphere.xp
deleted file mode 100644
index dfff26e1e4..0000000000
--- a/graphics/epix/samples/sphere.xp
+++ /dev/null
@@ -1,46 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-const double k(2*M_PI/(360*sqrt(3))); // assume "degrees" mode
-
-double exp_cos(double t) { return exp(k*t)*Cos(t); }
-double exp_sin(double t) { return exp(k*t)*Sin(t); }
-double minus_exp_cos(double t) { return -exp_cos(t); }
-double minus_exp_sin(double t) { return -exp_sin(t); }
-
-int main()
-{
-  picture(P(-1,-1), P(1,1), "2.5 x 2.5in");
-
-  begin();
-  degrees(); // set angle units
-  camera.at(P(1, 2.5, 3));
-
-  sphere(); // draw unit sphere's horizon
-
-  pen(Blue(1.6)); // hidden portions of loxodromes
-  backplot_N(exp_cos, exp_sin, -540, 540, 180);
-  backplot_N(minus_exp_cos, minus_exp_sin, -540, 540, 180);
-
-  pen(Red(1.6));
-  backplot_N(exp_sin, minus_exp_cos, -540, 540, 180);
-  backplot_N(minus_exp_sin, exp_cos, -540, 540, 180);
-
-  pen(Black(0.3)); // coordinate grid
-
-  for (int i=0; i<=12; ++i) {
-    latitude(90-15*i, 0, 360);
-    longitude(30*i, 0, 360);
-  }
-
-  bold(Blue()); // visible portions of loxodromes
-  frontplot_N(exp_cos, exp_sin, -540, 540, 360);
-  frontplot_N(minus_exp_cos, minus_exp_sin, -540, 540, 360);
-
-  pen(Red());
-  frontplot_N(exp_sin, minus_exp_cos, -540, 540, 360);
-  frontplot_N(minus_exp_sin, exp_cos, -540, 540, 360);
-
-  end();
-}
diff --git a/graphics/epix/samples/spherical.xp b/graphics/epix/samples/spherical.xp
deleted file mode 100644
index c40b897e8f..0000000000
--- a/graphics/epix/samples/spherical.xp
+++ /dev/null
@@ -1,76 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-const double MAX(3);
-
-int main()
-{
-  picture(P(-MAX,-MAX),P(MAX,MAX), "6x6in");
-
-  begin();
-  camera.at(30,5,20);
-
-#ifdef GRAY
-  camera.filter(Gray_Neutral());
-#endif
-  revolutions();
-
-  domain R(P(0,0,-0.25), P(3,1,0.25), mesh(12, 48, 24), mesh(12, 96, 120));
- 
-  std::list<domain> cuts;
-
-  double Phi(7.0/48), Theta(7.0/48);
-
-  cuts.push_back(R.slice1(2));
-  cuts.push_back(R.slice2(0));
-  cuts.push_back(R.slice2(Theta));
-  cuts.push_back(R.slice3(0));
-  cuts.push_back(R.slice3(Phi));
-
-  plain(Black(0.5));
-  fill(Red(1.9));
-  scenery coords(sph, R.slice1(2)); //  rho = 2
-
-  fill(Yellow(0.35));
-  coords.add(sph, R.slice2(0)).add(sph, R.slice2(Theta)); // theta = 0, Theta
-
-  fill(Blue(1.9));
-  coords.add(sph, R.slice3(0)).add(sph, R.slice3(Phi)); // phi = 0, Phi
-
-  coords.draw();
-  //  surface(sph, cuts);
-  fill(false);
-
-  pen(Black());
-  base(White(), "1.2pt");
-  arrow_fill(1);
-  arrow(P(3,0,0), P(3.5,0,0));
-  label(P(3.5,0,0), P(-2,-2), "$x$", bl);
-
-  arrow(P(0,3,0), P(0,3.5,0));
-  label(P(0,3.5,0), P(2,-2), "$y$", br);
-
-  arrow(P(0,0,3), P(0,0,3.5));
-  label(P(0,0,3.5), P(0,4), "$z$", t);
-
-  bold();
-  arc_arrow(P(0,0,0), 2, 0.5*Theta, Theta);
-  arc_arrow(P(0,0,0), 2, 0.5*Theta, 0);
-
-  aarrow(P(0,0,0), sph(2, Theta, Phi));
-
-  label(sph(2, 0.5*Theta, 0), P(2,2), "$\\theta$", t);
-  label(sph(2, Theta, 0.5*Phi), P(-2,0), "$\\phi$", l);
-  label(sph(1, Theta, Phi), P(2,-2), "$\\rho$", br);
-
-  base(Neutral(), 0);
-  dashed();
-  plain();
-  line(P(0,0,0), P(2,0,0));
-  line(P(0,0,0), sph(2, Theta, 0));
-  line(P(0,0,0), sph(2, Theta, Phi));
-
-  pst_format();
-  end();
-}
diff --git a/graphics/epix/samples/sqrt.xp b/graphics/epix/samples/sqrt.xp
deleted file mode 100644
index ffc5335c99..0000000000
--- a/graphics/epix/samples/sqrt.xp
+++ /dev/null
@@ -1,51 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-P f(double x, double y)
-{
-  pair z(x,y);
-  pair temp(z*z);
-  return P(temp.x1(), temp.x2(), x);
-}
-
-P F(double r, double t)
-{
-  return f(r*Cos(t), r*Sin(t));
-}
-
-P g(double t)
-{
-  return t*P(t,0,1);
-}
-
-domain R(P(0,0), P(1.25,0.5), mesh(6,24), mesh(12,60));
-
-int main()
-{
-  picture(P(-1.5, -1.5), P(1.5, 1.5), "2.5x2.5in");
-
-  begin();
-  revolutions();
-  camera.at(P(4,-2,3));
-
-  pen(Blue(1.7));
-  plot(F, R);
-
-  pen(Blue());
-  plot(F, R.resize2(0.5,1));
-
-  pen(Black());
-  arrow(P(0,0,0), 2*E_1);
-  arrow(P(0,0,0), 2*E_2);
-  arrow(P(0,0,0), 1.5*E_3);
-
-  masklabel(2*E_1, P(0,0), "$\\mathrm{Re}\\,z$", r);
-  label(2*E_2, P(0,0), "$\\mathrm{Im}\\,z$", r);
-  label(1.5*E_3, P(2,0), "$\\mathrm{Re}\\,\\sqrt{z}$", r);
-
-  bold(Red());
-  plot(g, -1.25, 1.25, 40);
-
-  end();
-}
diff --git a/graphics/epix/samples/sqrt2.xp b/graphics/epix/samples/sqrt2.xp
deleted file mode 100644
index 8bfcfcfab4..0000000000
--- a/graphics/epix/samples/sqrt2.xp
+++ /dev/null
@@ -1,64 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-// MAX^2 = radius of plot
-const double MAX(1.5);
-
-// complex square root in polar coordinates
-P f(double u, double v)
-{
-  return P(u*u*Cos(v), u*u*Sin(v), u*Cos(0.5*v));
-}
-
-// restrictions of sqrt to real axis, unit circle
-P sqrt_re(double t) { return f(t,0); }
-P sqrt_im(double t) { return f(1,t); }
-
-int main() {
-  picture(P(-4, -4), P(4, 2), "4x3in");
-
-  begin();
-
-  camera.filter(RGB_Neutral());
-
-  backing(Magenta(0.1));
-  set_crop();
-
-  revolutions();
-  label(P(xmin(), ymax()), P(2,-2), "Branches of $\\sqrt{z}$", br);
-
-  camera.at(6, -2, 2);
-  camera.range(4);
-  domain R(P(0,0), P(MAX,2), mesh(16, 80), mesh(16, 160));
-
-  // transparent branch
-  pen(Green(0.7), "0.15pt");
-  scenery surf(f, R.resize2(1,2));
-
-  fill(White(0.7));
-  pen(Black());
-  // opaque branch
-  surf.add(f, R.resize2(0,1));
-
-  surf.draw();
-  nofill();
-  // boundary curve, unit circle, axes, grid, labels
-  bbold(Red());
-
-  plot(sqrt_re, -MAX, 0, 30);
-
-  bold(Blue());
-  arrow(P(0,0,0), P(2,0,0));
-  arrow(P(0,0,0), P(0,2,0));
-
-  label_color(Blue());
-  label(P(2,0,0), P(0,-4), "$\\mathrm{Re}\\,z$", b);
-  label(P(0,2,0), P(4, 0), "$\\mathrm{Im}\\,z$", r);
-
-  bbold(Yellow());
-  plot(sqrt_re, 0, MAX, 30);
-
-  pst_format();
-  end();
-}
diff --git a/graphics/epix/samples/std_F.cc b/graphics/epix/samples/std_F.cc
deleted file mode 100644
index 9ccd7b90c6..0000000000
--- a/graphics/epix/samples/std_F.cc
+++ /dev/null
@@ -1,124 +0,0 @@
-/* 
- * std_F.cc -- The std_F class definitions
- *
- * Last Change: September 23, 2007
- */
-// Include only the headers we need; burdensome, but generally more
-// efficient for larger projects with many dependencies.
-#ifdef MINIMAL
-#include "epix/affine.h"
-#include "epix/Color.h"
-#include "epix/curves.h"
-#include "epix/pairs.h"
-#include "epix/path.h"
-#include "epix/state.h"
-#include "epix/triples.h"
-
-#else
-#include "epix.h"
-#endif
-
-#include "epix/paint_style.h"
-#include "std_F.h"
-
-namespace ePiX {
-
-  // The constructor initializes the class data, ensuring objects are
-  // well-formed. For efficiency, we use "initialization" instead of
-  // assignment (the "=" operator); this way, data members get their
-  // actual values immediately. The constructor body is empty, since
-  // this class requires no further initialization.
-
-  // All class member function definitions must be qualified with the
-  // class name, here "std_F::"
-  std_F::std_F()
-    : m_loc(0,0), m_e1(1,0), m_e2(0,1),
-      m_fore(Black()), m_back(White()),
-      m_edge(Black()), m_edge_width(0.4) { }
-
-  // Apply the affine map af; return a reference to this object so
-  // calls can be daisy-chained. Note the efficiency of storing only
-  // the bare minimum data to specify an affine map rather than
-  // holding and manipulating the shape of an F.
-  std_F& std_F::map_by(const affine& af)
-  {
-    m_loc = af(m_loc); // affines map locations, so this works
-    m_e1 = af(m_e1);
-    m_e2 = af(m_e2);
-
-    return *this;
-  }
-
-  // Set the background and foreground colors. Arguments' names chosen
-  // to indicate their purpose.
-  std_F& std_F::backing(const Color& back)
-  {
-    m_back = back;
-    return *this;
-  }
-
-  std_F& std_F::fill(const Color& fore)
-  {
-    m_fore = fore;
-    return *this;
-  }
-
-  // Set outline parameters.
-  std_F& std_F::border(const Color& edge, double wid)
-  {
-    m_edge = edge;
-    m_edge_width = wid;
-    return *this;
-  }
-
-  // Draw in the active screen. Most of the "real work" is done here.
-  void std_F::draw() const
-  {
-    // Get global drawing state, so we can restore before returning.
-    // Not particularly elegant, but it's what we have to work with.
-    Color old_fill(the_paint_style().fill_color());
-    bool old_flag(the_paint_style().fill_flag());
-
-    Color old_line(the_paint_style().line_color());
-    length old_line_width(the_paint_style().line_width());
-
-    // now we can draw
-    const double r(1.0/6.0);
-
-    path F;
-
-    // pr converts coords in [0,1] x [0,1] to our coords
-    F .pt(pr(r,   0.75*r)).pt(pr(2*r, 0.75*r)).pt(pr(2*r, 2.25*r))
-      .pt(pr(4*r, 2.25*r)).pt(pr(4*r, 3.25*r)).pt(pr(2*r, 3.25*r))
-      .pt(pr(2*r, 4.25*r)).pt(pr(5*r, 4.25*r)).pt(pr(5*r, 5.25*r))
-      .pt(pr(  r, 5.25*r));
-
-    F.close().fill();
-
-    // Set global drawing state. We have a member function named fill,
-    // so the call must be explicitly qualified with "ePiX::".
-    ePiX::fill(m_back);
-    ePiX::pen(m_edge, m_edge_width);
-
-    // Bounding parallelogram
-    ePiX::quad(pr(0,0), pr(1,0), pr(1,1), pr(0,1));
-
-    ePiX::fill(m_fore);
-    F.draw();
-    // Restore global fill state.
-    the_paint_style().fill_color(old_fill);
-    the_paint_style().fill_flag(old_flag);
-
-    the_paint_style().line_color(old_line);
-    the_paint_style().line_width(old_line_width);
-  }
-
-  // private; convert (x,y) to a location usable in path construction
-  // "Privacy" is enforced by the compiler from reading the header;
-  // the definition requires no special syntax.
-  P std_F::pr(double x, double y) const
-  {
-    pair loc((1 - x -y)*m_loc + x*m_e1 + y*m_e2);
-    return P(loc.x1(), loc.x2());
-  }
-} // end of namespace
diff --git a/graphics/epix/samples/std_F.h b/graphics/epix/samples/std_F.h
deleted file mode 100644
index 961fc984e4..0000000000
--- a/graphics/epix/samples/std_F.h
+++ /dev/null
@@ -1,83 +0,0 @@
-/*
- * std_F.h -- A class to draw the action of an affine transformation.
- *
- * This file is a C++ class tutorial (illustrating basic features), as
- * well as sample code for a small library, and style guide to writing
- * external modules for ePiX.
- *
- * Last Change: September 23, 2007
- */
-
-/*
- * This file provides the "std_F" class, which draws the image of an "F"
- * (the first roman letter having no symmetries) under an affine map.
- *
- *   std_F();    // An F in the unit square [0,1] x [0,1].
- *   map_by(af); // Apply the affine map af
- *
- *   // Set the background, foreground, border style
- *   backing(color);
- *   fill(folor);
- *   border(color, width);
- *
- *   draw();     // Draw in the active screen
- *
- * The file affine.xp illustrates use.
- */
-// "MINIMAL" compilation works, and entails fewer dependencies,
-// but places a larger burdern on the programer
-#ifdef MINIMAL
-#include "epix/pairs.h"
-#include "epix/Color.h"
-#else
-
-#include "epix.h"
-#endif
-
-namespace ePiX {
-
-  // forward declarations if we don't include epix.h
-#ifdef MINIMAL
-  class affine;
-  class P;
-#endif
-
-  // declare a new class "std_F"
-  class std_F {
-    // The "public" part of a class declaration specifies the interface:
-  public:
-    // A "constructor";  creates the standard F in the unit square
-    std_F();
-
-    // apply the affine map af; return a reference to this object so
-    // calls can be daisy-chained
-    std_F& map_by(const affine& af);
-
-    // set the background and foreground colors
-    std_F& backing(const Color&);
-    std_F& fill(const Color&);
-
-    // set outline pen
-    std_F& border(const Color&, double);
-
-    void draw() const; // draw in the active screen
-
-    // The private section contains implementation data, etc.  The
-    // shape of the F is not stored in the class data, but generated
-    // at runtime by draw().
-  private:
-    pair m_loc; // lower left corner
-    pair m_e1;  // lower right corner
-    pair m_e2;  // upper left corner
-
-    Color m_fore;
-    Color m_back;
-    Color m_edge;
-
-    double m_edge_width;
-
-    // for internal use; convert (x,y) in [0,1] x [0,1] to a location
-    P pr(double x, double y) const;
-  }; // end of std_F; class declarations must end with a semicolon
-
-} // end of namespace
diff --git a/graphics/epix/samples/std_F.xp b/graphics/epix/samples/std_F.xp
deleted file mode 100644
index e2ae794d5d..0000000000
--- a/graphics/epix/samples/std_F.xp
+++ /dev/null
@@ -1,88 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-#include "std_F.h" // include the custom header
-using namespace ePiX;
-
-// September 23, 2007
-//
-// The instructions below assume you've copied this file and the
-// sample files std_F.cc and std_F.h into a directory where you
-// have write permission.
-//
-// To build std_F.cc, you'll need to run commands similar to
-//
-//   g++ -I. -c std_F.cc
-//   ar -ru libaff.a std_F.o
-//   ranlib libaff.a
-//
-// Respectively, these compile std_F.cc into an object file, std_F.o;
-// create a static library named libaff.a containing the object code;
-// and create an index in libaff.a for the linker, so the library can
-// be used in external programs, such as the one built from this
-// source file. (On Mac OSX, you may need to run ranlib *after* moving
-// the library file to its permanent home.)
-//
-// You may give the library a different name, but it MUST begin "lib"
-// and have the extension ".a": "libblug.a" and "libaff-1.0.a" are all
-// right, but "mylib.a" or "libaff.test" are not. You refer to the
-// library by its name with "lib" and ".a" removed, as in "blug" or
-// "aff-1.0".
-//
-// To compile this source file (the one you're reading now), build
-// libaff.a as described above, then run the command
-//
-//   epix -I. -L. -laff std_F.xp
-//
-// Files (such as this one) that use an external library cannot be
-// compiled from emacs, since there is no way to pass the required
-// options; they must be compiled at a shell prompt.
-//
-// Please consult the gcc documentation ("g++ --help") for information on
-// what each option does.
-
-
-// About this file:
-//
-// "F" is the first letter of the Roman alphabet that has no non-trivial
-// symmetries.
-//
-// std_F is a class for representing plane affine maps; please consult
-// the manual for general information of ePiX's plane affine map class.
-//
-
-int main()
-{
-  picture(P(0,0), P(6,6), "4x4in");
-
-  begin();
-  degrees();
-
-  grid(6,6);
-
-  std_F F1; // the standard F
-  affine af1; // the identity map
-
-  F1.draw();
-
-  // stretch along the main diagonal
-  af1.rotate(45).v_scale(3).h_scale(0.75).rotate(-45);
-
-  // flip over the main diagonal and translate
-  af1.reflect(45).shift(pair(3,2));
-
-  // apply af, set style, and draw
-  F1.map_by(af1).fill(Black(0.6)).backing(Blue(1.8)).draw();
-
-  std_F F2;
-  affine af2;
-  af2.rotate(60).scale(1.5).shift(pair(5,0));
-  F2.map_by(af2).backing(RGB(1,0.8,0.2)).fill(Green(0.6)).draw();
-
-  std_F F3;
-  // define af3 by images of e1, e2, origin
-  affine af3(pair(2-sqrt(3), 6), pair(2,3), pair(2,5));
-  F3.map_by(af3).backing(Black(0.4)).fill(White()).draw();
-
-  pst_format();
-  end();
-}
diff --git a/graphics/epix/samples/steiner.flx b/graphics/epix/samples/steiner.flx
deleted file mode 100644
index a7d4953097..0000000000
--- a/graphics/epix/samples/steiner.flx
+++ /dev/null
@@ -1,50 +0,0 @@
-/* -*-flix-*- */
-// Steiner's Roman surface, using "surface" plots
-// May 19, 2006
-#include "epix.h"
-
-using namespace ePiX;
-
-double MAX(2.5), rad(0.8*MAX);
-
-P F(double u, double v)
-{
-  double x(rad*Cos(u)*Cos(v)), y(rad*Cos(u)*Sin(v)), z(rad*Sin(u));
-  return P(y*z, x*z, x*y);
-}
-
-P color(double x, double y)
-{
-#ifdef COLORSHADE
-  return P(0.5*Sin(x), -0.5*Sin(x), Cos(y));
-#else
-  return P(1,1,1); // white
-#endif
-}
-
-int main(int argc, char* argv[])
-{
-  if (argc == 3)
-    {
-      char* arg;
-      double temp1, temp2;
-      temp1=strtod(argv[1], &arg);
-      temp2=strtod(argv[2], &arg);
-
-      tix()=temp1/temp2;
-    }
-  picture(P(-MAX,-MAX),P(MAX,MAX), "4x4in");
-
-  begin();
-
-  backing(RGB(0.7, 0.9, 1));
-
-  fill();
-  revolutions();
-  camera.at(cyl(10, 0.5*tix(), 2)); // exploit 2-fold symmetry
-
-  surface(F, domain(P(-0.25, 0), P(0.25, 0.5), mesh(32,32), mesh(64,64)), color);
-
-  pst_format();
-  end();
-}
diff --git a/graphics/epix/samples/steiner2.flx b/graphics/epix/samples/steiner2.flx
deleted file mode 100644
index 37a8199825..0000000000
--- a/graphics/epix/samples/steiner2.flx
+++ /dev/null
@@ -1,70 +0,0 @@
-/* -*-flix-*- */
-#include "epix.h"
-using namespace ePiX;
-
-double MAX(2.5), rad(0.8*MAX);
-
-int N(6); // slices
-
-P F(double u, double v)
-{
-  double x(rad*Cos(u)*Cos(v)), y(rad*Cos(u)*Sin(v)), z(rad*Sin(u));
-  return P(y*z, x*z, x*y);
-}
-
-/*
-P color(double x, double y)
-{
-#ifdef COLORSHADE
-  return P(0.5*Sin(x), -0.5*Sin(x), Cos(y));
-#else
-  return P(1,1,1); // white
-#endif
-}
-*/
-
-int main(int argc, char* argv[])
-{
-  if (argc == 3)
-    {
-      char* arg;
-      double temp1(strtod(argv[1], &arg)), temp2(strtod(argv[2], &arg));
-
-      tix()=temp1/temp2;
-    }
-
-  picture(P(-MAX,-MAX),P(MAX,MAX), "4x4in");
-
-  begin();
-
-  backing(RGB(0.7, 0.9, 1));
-
-  fill();
-  revolutions();
-  camera.at(cyl(10, 0.25, 4));
-
-  P perp(sph(1, 0.125, tix()));
-
-  domain R(P(-0.25, 0), P(0.25, 0.5), mesh(32,32), mesh(64,64));
-#ifdef SHOWGRID
-  plain(Red());
-  plot(F, R);
-#endif
-
-  int mult(1);
-  // reverse slice order if necessary
-  if ((perp | camera.eye()) < 0)
-    mult=-1;
-
-  for (int i=-mult*N; i != mult*N; i += mult)
-    {
-      clip_slice((MAX*i*1.0/N)*perp, perp, 0.1);
-      rgb(0.25+0.1*i, 0, -0.1*i);
-
-      surface(F, R);
-      clip_restore();
-    }
-
-  pst_format();
-  end();
-}
diff --git a/graphics/epix/samples/surface_shade.xp b/graphics/epix/samples/surface_shade.xp
deleted file mode 100644
index d2676190c8..0000000000
--- a/graphics/epix/samples/surface_shade.xp
+++ /dev/null
@@ -1,46 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-// surface to plot (a dog saddle)
-P f(double u, double v)
-{
-  return P(u, v, 0.5*u*v*(u-v)*(u+v));
-}
-
-// position-dependent color function
-P color(double x, double y, double z)
-{
-#ifdef LAUREL_BURCH
-  return P(-Sin(0.25*x), 0.2, -Cos(0.25*x)); // Laurel Burch colors
-#else
-  return P(-tanh(z), 0, tanh(z)); // Quasi-geographic 70s colors
-#endif
-}
-
-int main()
-{
-  picture(P(-3,-3), P(3,3), "6x6in");
-
-  begin();
-
-  // Set creation attributes,
-  revolutions();
-  set_crop();
-  fill();
-
-  // style attributes,
-  backing(Black());
-  plain(Yellow());
-
-  // and viewpoint.
-  camera.at(P(8, -8, 4));
-
-  // Add scenery
-  domain R(P(-2,-2), P(2, 2), mesh(36, 36), mesh(72, 72));
-  surface(f, R, color);
-
-  // and print
-  pst_format();
-  end();
-}
diff --git a/graphics/epix/samples/symmetries.xp b/graphics/epix/samples/symmetries.xp
deleted file mode 100644
index bda649bdbf..0000000000
--- a/graphics/epix/samples/symmetries.xp
+++ /dev/null
@@ -1,87 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-// draw a regular n-gon with labeled vertices
-void polygon(int n, double th_0 = 0)
-{
-  const double d_th(full_turn()/n);
-  path poly;
-  for (int i=0; i<n; ++i)
-    {
-      // i-th vertex
-      double th(th_0 + i*d_th);
-      const P vtx(cis(th));
-      poly.pt(vtx);
-
-      // set label angle
-      label_angle(th + 0.25*full_turn());
-
-      // draw label
-      std::stringstream buf;
-      buf << "$" << i << "$";
-      dot(vtx, -8*vtx, buf.str());
-    }
-
-  poly.close().draw();
-}
-
-int main()
-{
-  picture(P(0,0), P(2,3), "4 x 6in");
-
-  begin();
-
-  border();
-
-  // draw one hexagon in a screen
-  screen scr(P(-1,-1), P(1,1));
-  activate(scr);
-
-  polygon(6);
-
-  // marks to distinguish a vertex and orientation
-  spot(P(1,0));
-  black(0.3);
-  line(P(-0.75,0), P(0.75,0));
-
-  black();
-  arc_arrow(P(0,0), 0.75, 0, M_PI/3);
-  arc_arrow(P(0,0), 0.75, 2*M_PI/3, M_PI);
-  arc_arrow(P(0,0), 0.75, 4*M_PI/3, 5*M_PI/3);
-  scr.scale(0.9);
-
-  // use layout and affine maps to draw symmetries
-  inset(P(0,2), P(1,3));
-
-  scr.rotate(2*M_PI/3);
-  inset(P(0,1), P(1,2));
-
-  scr.rotate(2*M_PI/3);
-  inset(P(0,0), P(1,1));
-
-  scr.rotate(2*M_PI/3).reflect(0);
-  inset(P(1,2), P(2,3));
-
-  scr.rotate(2*M_PI/3);
-  inset(P(1,1), P(2,2));
-
-  scr.rotate(2*M_PI/3);
-  inset(P(1,0), P(2,1));
-
-  deactivate(scr);
-
-  // label insets
-  font_size("LARGE");
-  label_angle(0);
-  masklabel(P(0.5, 2.5), "$e$");
-  masklabel(P(0.5, 1.5), "$\\alpha$");
-  masklabel(P(0.5, 0.5), "$\\alpha^2$");
-
-  masklabel(P(1.5, 2.5), "$\\beta$");
-  masklabel(P(1.5, 1.5), "$\\beta\\alpha^2$");
-  masklabel(P(1.5, 0.5), "$\\beta\\alpha$");
-
-  pst_format();
-  end();
-}
diff --git a/graphics/epix/samples/tori.xp b/graphics/epix/samples/tori.xp
deleted file mode 100644
index aa925845d6..0000000000
--- a/graphics/epix/samples/tori.xp
+++ /dev/null
@@ -1,63 +0,0 @@
-/* -*-ePiX-*- */
-/* tori.xp -- May 09, 2005 */
-// compile tutorial torus meshes at once
-#include "epix.h"
-using namespace ePiX;
-
-// torus
-P F(double u, double v)
-{
-  return polar(2.25+Cos(u), v) + P(0,0,Sin(u));
-}
-
-int main()
-{
-  picture(P(0,0), P(4,1), "6 x 1.5in");
-
-  begin();
-
-  domain R(P(0,0), P(1,1), mesh(12,30), mesh(24, 60));
-
-  revolutions();
-  camera.at(10,7,5);
-
-  // unclipped/cropped
-  screen scr1(P(-3,-3), P(3,3));
-  activate(scr1);
-  fill(White());
-  surface(F, R);
-  inset(P(0,0), P(1,1));
-  deactivate(scr1);
-
-  // cropped
-  screen scr2(P(-3,-3), P(3,3));
-  activate(scr2);
-  set_crop();
-  border();
-  surface(F, R);
-  inset(P(1.5,0), P(2.5,1));
-  deactivate(scr2);
-
-  // clipped
-  screen scr3(P(-3,-3), P(3,3));
-  activate(scr3);
-  clip_box(P(3.5, 2, 1.5));
-
-  // box, sides layered manually
-  nofill();
-  rect(P(-3.5, -2, -1.5), P(-3.5,  2, 1.5));
-  rect(P(-3.5, -2, -1.5), P( 3.5, -2, 1.5));
-
-  fill();
-  surface(F, R);
-  nofill();
-  rect(P( 3.5, -2, -1.5), P( 3.5,  2, 1.5));
-  rect(P(-3.5,  2, -1.5), P( 3.5,  2, 1.5));
-
-  inset(P(3,0), P(4,1));
-  deactivate(scr3);
-
-  pst_format();
-  end();
-}
-
diff --git a/graphics/epix/samples/torus.xp b/graphics/epix/samples/torus.xp
deleted file mode 100644
index dbcfe31906..0000000000
--- a/graphics/epix/samples/torus.xp
+++ /dev/null
@@ -1,39 +0,0 @@
-/* -*-ePiX-*- */
-/* torus.xp -- July 6, 2004 */
-#include "epix.h"
-using namespace ePiX;
-
-const int N(8);
-
-P F(double t1, double t2)
-{
-  return polar(2+Sin(t2), t1) + Cos(t2)*E_3;
-}
-
-domain R(P(0,0), P(1,1), mesh(4*N, 2*N), mesh(12*N, 6*N));
-
-int main() 
-{
-  picture(P(-3,-3), P(3,3), "2x2in");
-
-  begin();
-  revolutions();
-  camera.at(1.7,-1, 0.75);
-  camera.range(8);
-
-  rgb(0.2, 0.5, 0.7);
-
-  plot(F, R.resize1(0,0.875));
-
-  bold();
-  rgb(0.5, 0.3, 0.9);
-  plot(F, R.resize2(-0.375,0).resize1(0,0.125));
-
-  red();
-  dashed();
-  plot(F, R.slice1(0));
-  plot(F, R.slice2(0));
-
-  end();
-}
-
diff --git a/graphics/epix/samples/trig.flx b/graphics/epix/samples/trig.flx
deleted file mode 100644
index f07763f4d4..0000000000
--- a/graphics/epix/samples/trig.flx
+++ /dev/null
@@ -1,74 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-P f(double x, double t)
-{
-  return P(x, Sin(x+t));
-}
-
-domain R(P(0,0), P(1,1), mesh(60,24), mesh(120, 72));
-
-int main(int argc, char* argv[])
-{
-  if (argc == 3)
-    {
-      char* arg;
-      double temp1, temp2;
-      temp1=strtod(argv[1], &arg);
-      temp2=strtod(argv[2], &arg);
-
-      tix()=temp1/temp2;
-    }
-
-  picture(P(0,0), P(5,2), "5x2in");
-
-  begin();
-  revolutions();
-
-  border();
-  set_crop();
-
-  screen rolling(P(-1,-1), P(1,1));
-  screen waving(P(0,-1), P(1,1));
-
-  activate(rolling);
-
-  P  ctr(polar(0.5, tix()));
-  P  rim(polar(0.5, tix()) + polar(0.5, -tix()));
-  P rim2(polar(0.5, tix()) + polar(0.5, 0.5-tix()));
-
-  circle(ctr, 0.5); // small wheel
-
-  bold();
-  circle(P(0,0), 1); // big wheel
-
-  green();
-  line(P(1,0), P(-1,0));
-
-  blue();
-  line(P(0,1), P(0,-1));
-
-  red();
-  line(ctr, rim);
-  line(ctr, rim2);
-
-  ddot(rim);
-  ddot(rim2);
-  deactivate(rolling);
-
-  activate(waving);
-  set_crop();
-  blue();
-  plot(f, R.slice2(tix()));
-  deactivate(waving);
-
-  inset(rolling, P(0,0), P(2,2));
-  inset(waving, P(3,0), P(5,2));
-
-  dashed();
-  pen(Blue(1.6), 0.15);
-  line(P(1,1+Sin(tix())), P(3,1) + f(0, tix()));
-
-  end();
-}
diff --git a/graphics/epix/samples/twisted_cubic.xp b/graphics/epix/samples/twisted_cubic.xp
deleted file mode 100644
index 8e9ec5d4b7..0000000000
--- a/graphics/epix/samples/twisted_cubic.xp
+++ /dev/null
@@ -1,106 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-const double MAX(2.5);
-
-const double XMIN(-2);
-
-// twisted cubic
-P   cubic(double t)
-{
-  return t*P(1, t, t*t);
-}
-
-// projections to coordinate planes
-P cubic12(double t)
-{
-  const P arg(cubic(t));
-  return P(arg.x1(), arg.x2(), XMIN);
-}
-
-P cubic13(double t)
-{
-  const P arg(cubic(t));
-  return P(arg.x1(), XMIN, arg.x3());
-}
-
-P cubic23(double t)
-{
-  const P arg(cubic(t));
-  return P(XMIN, arg.x2(), arg.x3());
-}
-
-// draw lines from one path to another
-void bars(P f1(double), P f2(double))
-{
-  for (int i=0; i<=20; ++i)
-    line(f1(-1+0.1*i), f2(-1+0.1*i));
-}
-
-// code to draw entire figure
-void draw_frame()
-{
-  // (x,z)-plane
-  blue();
-  bbold();
-  plot(cubic13, -1, 1, 60);
-  plain();
-  bars(cubic13, cubic);
-  label(cubic13(1), P(0,2), "$x$-$z$", t);
-
-  // (y,z)-plane
-  green(0.6);
-  bbold();
-  plot(cubic23, -1, 1, 60);
-  plain();
-  bars(cubic23, cubic);
-  label(cubic23(1), P(0,2), "$y$-$z$", t);
-
-  // (x,y)-plane
-  magenta();
-  bbold();
-  plot(cubic12, -1, 1, 60);
-  plain();
-  bars(cubic12, cubic);
-  label(cubic12(1), P(2,0), "$x$-$y$",r);
-
-  // the cubic
-  bold(Red(1.6));
-  base(Red(0.6), "2pt");
-  plot(cubic, -1, 1, 60);
-}
-
-int main()
-{
-  picture(P(-1,0), P(1.25,1), "4.5 x 2in");
-
-  begin();
-
-  screen scr_left(P(-MAX,-MAX), P(MAX,MAX));
-  activate(scr_left);
-
-  border(Black(), "1pt");
-
-  camera.at(sph(10, 0.8, 0.5));
-  camera.look_at(P(0,0,-0.25));
-
-  draw_frame();
-  base(Neutral());
-
-  screen scr_right(P(-MAX,-MAX), P(MAX,MAX));
-  activate(scr_right);
-
-  border(Black(), "1pt");
-
-  camera.at(sph(10, 0.9, 0.5));
-  camera.look_at(P(0,0,-0.25));
-
-  draw_frame();
-
-  inset(scr_left,  P(0.25,0), P(1.25,1));
-  inset(scr_right, P(-1,0), P(0,1));
-
-  end();
-}
-
diff --git a/graphics/epix/samples/uppersum.xp b/graphics/epix/samples/uppersum.xp
deleted file mode 100644
index d1ff6ac2b0..0000000000
--- a/graphics/epix/samples/uppersum.xp
+++ /dev/null
@@ -1,37 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-const int N(12); // Number of rectangles
-
-// gather references to integrand
-double f(double t)
-{
-  return Sin(t);
-}
-
-int main()
-{
-  picture(P(0,0), P(3,1), "3x1in");
-
-  begin();
-
-  const double dx(xsize()/N);
-
-  riemann_sum(f, xmin(), xmax(), N, UPPER);
-
-  fill(Black(0.1));
-  riemann_sum(f, xmin(), xmax(), N, LOWER);
-  nofill();
-
-  h_axis(xsize());
-  v_axis(2*ysize());
-
-  h_axis_labels(xsize(), P(0,-4), b);
-  label(P(2, f(2)), P(4,2), "$y=\\sin x$", tr);
-
-  bold(Blue());
-  plot(f, xmin(), xmax(), 40);
-
-  end();
-}
diff --git a/graphics/epix/samples/vfield.xp b/graphics/epix/samples/vfield.xp
deleted file mode 100644
index ba6e1fd8ba..0000000000
--- a/graphics/epix/samples/vfield.xp
+++ /dev/null
@@ -1,71 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-// A spatial vector field depending on three variables
-P F(double x, double y, double z)
-{
-  return -0.25*P(0.5*x+y, 0.5*y-x, 1+z);
-}
-
-domain R(P(-1,-1,-1), P(1,1,1), mesh(6,6,4), mesh());
-
-int main()
-{
-  picture(P(-2,-2),P(2,2), "4x4in");
-
-  begin();
-  border();
-
-  label(P(0, ymax()), P(0,-4), "$F(x,y,z)=-(x+2y, y-2x, 1+z)$",b);
-
-  camera.at(P(11,8,5));
-
-  // coordinate grids
-  const int GRIDS(6);
-  plain(Black(0.3));
-  grid(P(-1, -1,-1), P(-1, 1, 1), GRIDS, GRIDS);
-  grid(P(-1, -1,-1), P( 1,-1, 1), GRIDS, GRIDS);
-  grid(P(-1, -1,-1), P(1, 1, -1), GRIDS, GRIDS);
-
-  // flow lines
-  bold();
-  for (int i=0; i<12; ++i)
-    {
-      double t(M_PI_2+i*M_PI/6);
-      pen(RGB(0.25*(3+Sin(t)), 0.25, 0.25*(3+Cos(t))));
-      ode_plot(F, cyl(1.4, t, 1), 0, 10, 60);
-    }
-
-  // draw arrows in plain black borderd by a white edge;
-  // vectors will appear to hide vectors behind them
-  plain(Black());
-  base(White(), "2pt");
-
-  // the field is drawn in successive slices x_3 = const
-#ifdef VECT
-  vector_field(F, R, 0.75); // draw arrowheads at 75% of default size
-#else
-  dart_field(F, R, 0.5);  // draw darts at 50% of default length
-#endif
-
-  const double DX(0.125); // label padding
-  font_size("scriptsize");
-  degrees();
-
-  label_angle(30); // adjusted visually; could calculate from camera position
-  label(P(1+DX, -1, -1), P(-4,-2), "$y=-1$", bl);
-  label(P(1+DX,  0, -1), P(-4,-2), "$y=0$", bl);
-  label(P(1+DX,  1, -1), P(-4,-2), "$y=1$", bl);
-
-  label_angle(-15);
-  label(P(-1, 1+DX, -1), P(4,0), "$x=-1$", br);
-  label(P( 0, 1+DX, -1), P(4,0), "$x=0$", br);
-  label(P( 1, 1+DX, -1), P(4,0), "$x=1$", br);
-
-  label(P( 1, -1-DX, -1), P(-4,0), "$z=-1$", tl);
-  label(P( 1, -1-DX,  0), P(-4,0), "$z=0$", tl);
-  label(P( 1, -1-DX,  1), P(-4,0), "$z=1$", tl);
-
-  end();
-}
diff --git a/graphics/epix/samples/weierstrass.xp b/graphics/epix/samples/weierstrass.xp
deleted file mode 100644
index 2822b0737a..0000000000
--- a/graphics/epix/samples/weierstrass.xp
+++ /dev/null
@@ -1,36 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-const int N(8); // Number of summands
-
-double weierstrass(double t)
-{
-  double y(0);
-  for(int i=0; i < N; ++i)
-    y += pow(2,-i)*cb(pow(2,i)*t);
-
-  return y;
-}
-
-int main()
-{
-  picture(P(-2, 0), P(2, 1.5), "3.2 x 1.2in");
-
-  begin();
-
-  h_axis(2*xsize());
-  v_axis(2*ysize());
-  h_axis_labels(xsize(), P(-4,-8));
-  
-  blue();
-  plot(cb, xmin() - 0.25, xmax()+0.25, 4*xsize() + 2);
-
-  bold(Black());
-  plot(weierstrass, xmin(), xmax(), pow(2,N));
-
-  pen(Red());
-  plot(weierstrass, 0.5, 1.5, pow(2,N-2));
-
-  end();
-}
diff --git a/graphics/epix/samples/wheel.xp b/graphics/epix/samples/wheel.xp
deleted file mode 100644
index e8056f8658..0000000000
--- a/graphics/epix/samples/wheel.xp
+++ /dev/null
@@ -1,50 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-P F(double t, double r)
-{
-  return P(t-r*Sin(t), 1-r*Cos(t)); // a cycloid
-}
-
-int main()
-{
-  picture(P(0,0), P(15,27), "4 x 7.2in");
-
-  begin();
-
-  const double dt(5*M_PI/11);
-  double t(dt);
-
-  for(int i=0; i < 9; ++i, t += dt)
-    {
-      screen scr(P(-1,0), P(15,2)); // drawing area
-      activate(scr);
-
-      plain(Black());
-      line(P(-1, 0), P(15, 0)); // the ground
-
-      circle(P(t,1), 1); // the wheel
-
-      // [0,t] x [0,1]
-      domain R(P(0,0), P(t, 1), mesh(10*i,5), mesh((int) ceil(1+4*t), 5));
-
-      // the paths
-      bold();
-      for (int j=0; j < 6; ++j)
-        {
-          pen(RGB(1-0.125*j, 0.125*j, 0.5+0.125*j));
-          plot(F, R.slice2(0.2*j));
-        }
-
-      // the spoke
-      bold(Green());
-      line(P(t,1), F(t,1));
-
-      inset(P(0, 25-3*i), P(15, 27-3*i)); // page layout
-      deactivate(scr);
-    }
-
-  end();
-}
-
diff --git a/graphics/epix/screen.cc b/graphics/epix/screen.cc
deleted file mode 100644
index 2c23a26d68..0000000000
--- a/graphics/epix/screen.cc
+++ /dev/null
@@ -1,390 +0,0 @@
-/* 
- * screen.cc -- ePiX::screen_data class wrapper (for user interface)
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.18
- * Last Change: September 16, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#include <string>
-#include <sstream>
-
-#include "triples.h"
-#include "pairs.h"
-#include "affine.h"
-
-#include "Color.h"
-
-#include "mask_ellipse.h"
-#include "mask_rectangle.h"
-#include "mask_diamond.h"
-
-#include "screen_data.h"
-#include "screen.h"
-
-namespace ePiX {
-
-  // N.B. Our interface handles only P, not pair.
-  // Our implementation works only with pair, not P.
-
-  P __epix_pair2P(const pair& arg)
-  {
-    return P(arg.x1(), arg.x2(), 0);
-  }
-
-  screen::screen() { }
-
-  screen::screen(const P& arg1, const P& arg2)
-    : m_screen(new screen_data(pair(arg1.x1(), arg1.x2()),
-			       pair(arg2.x1(), arg2.x2()))) { }
-
-
-  screen::screen(const screen& sc)
-    : m_screen(sc.m_screen->clone()) { }
-
-  screen& screen::operator= (const screen& sc)
-  {
-    if (this != &sc)
-      {
-	screen_data* tmp(sc.m_screen->clone());
-
-	delete m_screen;
-	m_screen = tmp;
-      }
-
-    return *this;
-  }
-
-  screen::~screen()
-  {
-    delete m_screen;
-  }
-
-
-  // Set mask; one named function for each type of screen_mask
-  screen& screen::crop_mask_rectangle(const P& sw, const P& ne)
-  {
-    const pair BL(sw.x1(), sw.x2());
-    const pair TR(ne.x1(), ne.x2());
-
-    m_screen->set_mask(mask_rectangle(BL, TR));
-    return *this;
-  }
-
-  screen& screen::crop_mask_ellipse(const P& sw, const P& ne)
-  {
-    const pair BL(sw.x1(), sw.x2());
-    const pair TR(ne.x1(), ne.x2());
-
-    m_screen->set_mask(mask_ellipse(BL, TR));
-    return *this;
-  }
-
-  screen& screen::crop_mask_diamond(const P& sw, const P& ne)
-  {
-    const pair BL(sw.x1(), sw.x2());
-    const pair TR(ne.x1(), ne.x2());
-
-    m_screen->set_mask(mask_diamond(BL, TR));
-    return *this;
-  }
-
-  // masks' cardinal points lie on circumrectangle, corners may not
-  screen& screen::crop_mask_rectangle()
-  {
-    const pair BL((m_screen->l()).x1(), (m_screen->b()).x2());
-    const pair TR((m_screen->r()).x1(), (m_screen->t()).x2());
-
-    m_screen->set_mask(mask_rectangle(BL, TR));
-    return *this;
-  }
-
-  screen& screen::crop_mask_ellipse()
-  {
-    const pair BL((m_screen->l()).x1(), (m_screen->b()).x2());
-    const pair TR((m_screen->r()).x1(), (m_screen->t()).x2());
-
-    m_screen->set_mask(mask_ellipse(BL, TR));
-    return *this;
-  }
-
-  screen& screen::crop_mask_diamond()
-  {
-    const pair BL((m_screen->l()).x1(), (m_screen->b()).x2());
-    const pair TR((m_screen->r()).x1(), (m_screen->t()).x2());
-
-    m_screen->set_mask(mask_diamond(BL, TR));
-    return *this;
-  }
-
-
-  screen screen::extract(const P& arg1, const P& arg2) const
-  {
-    screen value(arg1, arg2);
-
-    value.m_screen
-      = new screen_data(m_screen->extract(pair(arg1.x1(), arg1.x2()),
-					  pair(arg2.x1(), arg2.x2())));
-    return value;
-  }
-
-  screen screen::extract_diamond(const P& arg1, const P& arg2) const
-  {
-    screen value(arg1, arg2);
-
-    value.m_screen
-      = new screen_data(m_screen->extract_diamond(pair(arg1.x1(), arg1.x2()),
-						  pair(arg2.x1(), arg2.x2())));
-    return value;
-  }
-
-  screen screen::extract_ellipse(const P& arg1, const P& arg2) const
-  {
-    screen value(arg1, arg2);
-
-    value.m_screen
-      = new screen_data(m_screen->extract_ellipse(pair(arg1.x1(), arg1.x2()),
-						  pair(arg2.x1(), arg2.x2())));
-    return value;
-  }
-
-
-  screen& screen::set_crop(bool arg)
-  {
-    m_screen->set_crop(arg);
-    return *this;
-  }
-
-  // crop contents to current mask
-  screen& screen::crop()
-  {
-    m_screen->crop();
-    return *this;
-  }
-
-
-  // inset and import
-  screen& screen::paste(const screen& child, const P& sw, const P& ne)
-  {
-    m_screen->paste(*(child.m_screen), mask_rectangle(pair(sw.x1(), sw.x2()),
-						      pair(ne.x1(), ne.x2())));
-    return *this;
-  }
-
-  screen& screen::paste(const screen& child)
-  {
-    m_screen->paste(*(child.m_screen));
-    return *this;
-  }
-
-  screen& screen::clear()
-  {
-    m_screen->clear();
-    return *this;
-  }
-
-  screen& screen::border(const Color& col, double len)
-  {
-    std::stringstream buf;
-    buf << len << "pt";
-    m_screen->border(col, buf.str());
-    return *this;
-  }
-
-  screen& screen::border(const Color& col, const std::string& len)
-  {
-    m_screen->border(col, len);
-    return *this;
-  }
-
-  screen& screen::backing(const Color& col)
-  {
-    m_screen->backing(col);
-    return *this;
-  }
-
-
-  screen& screen::border()
-  {
-    m_screen->border();
-    return *this;
-  }
-
-  screen& screen::backing()
-  {
-    m_screen->backing();
-    return *this;
-  }
-
-  // affine operations on contents (not border, backing)
-  screen& screen::apply(const affine& af)
-  {
-    m_screen->apply(af);
-    return *this;
-  }
-
-  screen& screen::shift(const P& arg)
-  {
-    m_screen->shift(pair(arg.x1(), arg.x2()));
-    return *this;
-  }
-
-  // rotate by theta about ctr
-  screen& screen::rotate(double theta, const P& ctr)
-  {
-    m_screen->rotate(theta, pair(ctr.x1(), ctr.x2()));
-    return *this;
-  }
-
-  // reflect in angle-theta line through ctr
-  screen& screen::reflect(double theta, const P& ctr)
-  {
-    m_screen->reflect(theta, pair(ctr.x1(), ctr.x2()));
-    return *this;
-  }
-
-    // scale coord direction(s) fixing ctr
-  screen& screen::h_scale(double sc, const P& ctr)
-  {
-    m_screen->h_scale(sc, pair(ctr.x1(), ctr.x2()));
-    return *this;
-  }
-
-  screen& screen::v_scale(double sc, const P& ctr)
-  {
-    m_screen->v_scale(sc, pair(ctr.x1(), ctr.x2()));
-    return *this;
-  }
-
-  screen& screen::scale(double sc, const P& ctr)
-  {
-    m_screen->scale(sc, pair(ctr.x1(), ctr.x2()));
-    return *this;
-  }
-
-  // shear, fixing ctr, e.g. h_shear(sc) : (x,y) -> (x+sc*y, y)
-  screen& screen::h_shear(double sc, const P& ctr)
-  {
-    m_screen->h_shear(sc, pair(ctr.x1(), ctr.x2()));
-    return *this;
-  }
-
-  screen& screen::v_shear(double sc, const P& ctr)
-  {
-    m_screen->v_shear(sc, pair(ctr.x1(), ctr.x2()));
-    return *this;
-  }
-
-  P screen::tr() const
-  {
-    return __epix_pair2P(m_screen->tr());
-  }
-
-  P screen::tl() const
-  {
-    return __epix_pair2P(m_screen->tl());
-  }
-
-  P screen::bl() const
-  {
-    return __epix_pair2P(m_screen->bl());
-  }
-
-  P screen::br() const
-  {
-    return __epix_pair2P(m_screen->br());
-  }
-
-
-  P  screen::t() const
-  {
-    return __epix_pair2P(m_screen->t());
-  }
-
-  P  screen::b() const
-  {
-    return __epix_pair2P(m_screen->b());
-  }
-
-  P  screen::l() const
-  {
-    return __epix_pair2P(m_screen->l());
-  }
-
-  P  screen::r() const
-  {
-    return __epix_pair2P(m_screen->r());
-  }
-
-  P  screen::c() const
-  {
-    return __epix_pair2P(m_screen->c());
-  }
-
-
-  double screen::h_min()  const
-  {
-    return m_screen->h_min();
-  }
-
-  double screen::h_max()  const
-  {
-    return m_screen->h_max();
-  }
-
-  double screen::h_size() const
-  {
-    return m_screen->h_size();
-  }
-
-  double screen::h_avg()  const
-  {
-    return m_screen->h_avg();
-  }
-
-
-  double screen::v_min()  const
-  {
-    return m_screen->v_min();
-  }
-
-  double screen::v_max()  const
-  {
-    return m_screen->v_max();
-  }
-
-  double screen::v_size() const
-  {
-    return m_screen->v_size();
-  }
-
-  double screen::v_avg()  const
-  {
-    return m_screen->v_avg();
-  }
-} // end of namespace
diff --git a/graphics/epix/screen.h b/graphics/epix/screen.h
deleted file mode 100644
index 023d34b4be..0000000000
--- a/graphics/epix/screen.h
+++ /dev/null
@@ -1,175 +0,0 @@
-/* 
- * screen.h -- ePiX::screen class
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.18
- * Last Change: September 15, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-/*
- * This file defines the screen class interface, a Cartesian rectangle
- * into which objects are drawn. Object-creating commands add to the
- * the "global" screen the_picture(). Users may create and activate
- * additional screens, then import their content to the_picture(). 
- *
- * Constructor:
- *   screen(P(a,c), P(b,d));  // corners of bounding box
- *
- * Markup functions:
- *   crop();         // remove elements outside bounding box
- *   crop_to(mask);  // or specified mask
- *   paste(screen);  // overlay contents of screen
- *   paste(screen, P(a,c), P(b,d));  // or inset into specified rectangle
- *
- * Decorations:
- *   border(Color, "1pt"); // set border color/width
- *   backing(Color);       // and backing color
- *
- * This file wraps the implementation, which is hidden from the user.
- */
-#ifndef EPIX_SCREEN
-#define EPIX_SCREEN
-
-#include <string>
-
-#include "triples.h"
-
-namespace ePiX {
-
-  class Color;
-  class affine;
-  class screen_data;
-  class P;
-
-  // global function
-  void write(const std::string&);
-
-  class screen {
-    // There's no user-visible form for screen contents, so
-    // we give these classes access to our implementation.
-    friend class arrow_data;
-    friend class label_data;
-    friend class legend;
-    friend class path_data;
-    friend class picture_data;
-    friend void write(const std::string&);
-
-  public:
-    screen();
-    screen(const P&, const P&);
-
-    screen(const screen&);
-    screen& operator= (const screen&);
-    ~screen();
-
-    // Set mask; one named function for each type of screen_mask
-    screen& crop_mask_rectangle(const P&, const P&);
-    screen& crop_mask_ellipse(const P&, const P&);
-    screen& crop_mask_diamond(const P&, const P&);
-
-    screen& crop_mask_rectangle();
-    screen& crop_mask_ellipse();
-    screen& crop_mask_diamond();
-
-    // return selected region
-    screen extract(const P&, const P&) const;
-    screen extract_diamond(const P&, const P&) const;
-    screen extract_ellipse(const P&, const P&) const;
-
-    // set flag only
-    screen& set_crop(bool arg=true);
-
-    // crop contents to current mask
-    screen& crop();
-
-    // inset and import
-    screen& paste(const screen& child, const P& inset_sw, const P& inset_ne);
-    screen& paste(const screen& child);
-
-    screen& clear();
-
-    // border(Color, length)?
-    screen& border(const Color&, double);
-    screen& border(const Color&, const std::string&);
-    screen& backing(const Color&);
-
-    screen& border();
-    screen& backing();
-
-    //// pass-through functions ////
-    // affine operations on contents (not border, backing)
-    screen&  apply(const affine& f);
-
-    // convenience operators for single affine ops
-    screen&   shift(const P& arg);
-
-    // rotate by theta about ctr
-    screen&  rotate(double theta, const P& ctr = P(0,0));
-
-    // reflect in angle-theta line through ctr
-    screen& reflect(double theta, const P& ctr = P(0,0));
-
-    // scale coord direction(s) fixing ctr
-    screen& h_scale(double, const P& ctr=P(0,0));
-    screen& v_scale(double, const P& ctr=P(0,0));
-    screen&   scale(double, const P& ctr=P(0,0));
-
-    // shear, fixing ctr, e.g. h_shear(sc) : (x,y) -> (x+sc*y, y)
-    screen&  h_shear(double sc, const P& ctr=P(0,0));
-    screen&  v_shear(double sc, const P& ctr=P(0,0));
-
-    P tr() const;
-    P tl() const;
-    P bl() const;
-    P br() const;
-
-    P  t() const;
-    P  b() const;
-    P  l() const;
-    P  r() const;
-    P  c() const;
-
-    double h_min()  const;
-    double h_max()  const;
-    double h_size() const;
-    double h_avg()  const;
-
-    double v_min()  const;
-    double v_max()  const;
-    double v_size() const;
-    double v_avg()  const;
-
-  private:
-    screen_data* m_screen;
-
-  }; // end of class screen
-
-} // end of namespace
-
-#endif /* EPIX_SCREEN */
diff --git a/graphics/epix/screen_crop.cc b/graphics/epix/screen_crop.cc
deleted file mode 100644
index 1eb6860266..0000000000
--- a/graphics/epix/screen_crop.cc
+++ /dev/null
@@ -1,70 +0,0 @@
-/* 
- * screen_crop.cc -- ePiX functions for cropping 2D paths and loops
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.8
- * Last Change: July 17, 2007
- *
- * 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- *
- *
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#include "functions.h"
-#include "pairs.h"
-
-#include "edge_data.h"
-#include "screen_crop.h"
-#include "crop_algorithms.h"
-
-namespace ePiX {
-
-  typedef std::list<edge2d>::const_iterator CLI;
-
-  static pair unit_perp(const edge2d& E)
-  {
-    pair N(J(E.head() - E.tail()));
-    return N *= recip(norm(N));
-  }
-
-  // O(n^2) algorithm seems necessary since edge_list needn't be convex
-  std::list<edge2d>& crop_path_2nd(const std::list<edge2d>& bord,
-				   std::list<edge2d>& edge_list)
-  {
-    for (CLI ep=bord.begin(); ep != bord.end(); ++ep)
-      chop_path<pair>(unit_perp(*ep), (*ep).tail(), edge_list);
-
-    return cull<pair>(edge_list);
-  }
-
-  std::list<edge2d>& crop_loop_2nd(const std::list<edge2d>& bord,
-				   std::list<edge2d>& edge_list)
-  {
-    for (CLI ep=bord.begin(); ep != bord.end(); ++ep)
-      {
-	chop_path<pair>(unit_perp(*ep), (*ep).tail(), edge_list);
-	loopify<pair>(edge_list);
-      }
-
-    return cull<pair>(edge_list);
-  }
-} // end of namespace
diff --git a/graphics/epix/screen_crop.h b/graphics/epix/screen_crop.h
deleted file mode 100644
index 910114528a..0000000000
--- a/graphics/epix/screen_crop.h
+++ /dev/null
@@ -1,49 +0,0 @@
-/* 
- * screen_crop.h -- ePiX functions for cropping 2D paths and loops
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.8
- * Last Change: July 17, 2007
- *
- * 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- *
- *
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#ifndef EPIX_SCREEN_CROP
-#define EPIX_SCREEN_CROP
-
-#include <list>
-
-#include "edge_data.h"
-
-namespace ePiX {
-
-  // return reference to second argument
-  std::list<edge2d>& crop_path_2nd(const std::list<edge2d>&,
-				   std::list<edge2d>&);
-
-  std::list<edge2d>& crop_loop_2nd(const std::list<edge2d>&,
-				   std::list<edge2d>&);
-} // end of namespace
-
-#endif /* EPIX_SCREEN_CROP */
diff --git a/graphics/epix/screen_data.cc b/graphics/epix/screen_data.cc
deleted file mode 100644
index 02eac318b5..0000000000
--- a/graphics/epix/screen_data.cc
+++ /dev/null
@@ -1,572 +0,0 @@
-/* 
- * screen_data.cc -- ePiX::screen class implementation
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.2.1
- * Last Change: September 28, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#include <list>
-#include <algorithm>
-#include <sstream>
-
-#include "camera.h"
-
-#include "pairs.h"
-
-#include "functions.h"
-
-#include "Color.h"
-
-#include "utils.h"
-
-#include "tile.h"
-
-#include "pen_line.h"
-#include "pen_fill.h"
-
-#include "affine.h"
-#include "mask_ellipse.h"
-#include "mask_rectangle.h"
-#include "mask_diamond.h"
-
-#include "format.h"
-
-// #include "screen_mask.h"
-#include "screen_data.h"
-
-namespace ePiX {
-
-  typedef std::list<tile*>::const_iterator Tp;
-
-  // constructor
-  screen_data::screen_data(const pair& arg1, const pair& arg2)
-    : m_bl(pair(min(arg1.x1(), arg2.x1()), min(arg1.x2(), arg2.x2()))),
-      m_tr(pair(max(arg1.x1(), arg2.x1()), max(arg1.x2(), arg2.x2()))),
-      m_mask(new mask_rectangle(m_bl, m_tr)),
-      m_border(new pen_line()),
-      m_backing(new pen_fill()),
-      m_crop(false) { }
-
-  // copy constructor
-  screen_data::screen_data(const screen_data& scr)
-    : m_bl(scr.m_bl),
-      m_tr(scr.m_tr), 
-      m_mask(scr.m_mask->clone()),
-      m_border(scr.m_border->clone()),
-      m_backing(scr.m_backing->clone()),
-      m_crop(scr.m_crop)
-  {
-    for(Tp p=scr.m_tiles.begin(); p!= scr.m_tiles.end(); ++p)
-      add_tile(*p);
-  }
-
-  // copy assignment
-  screen_data& screen_data::operator= (const screen_data& scr)
-  {
-    if (this != &scr)
-      {
-	// copy scr's tiles before freeing ours
-	std::list<tile*> tmp;
-	for(Tp p=scr.m_tiles.begin(); p!= scr.m_tiles.end(); ++p)
-	  add_tile(*p);
-
-	screen_mask* tmp_mask(scr.m_mask->clone());
-
-	pen_line* tmp_border(scr.m_border->clone());
-	pen_fill* tmp_backing(scr.m_backing->clone());
-
-	// okay, safe to muck with our data
-	m_bl = scr.m_bl;
-	m_tr = scr.m_tr;
-
-	delete m_mask;
-	m_mask = tmp_mask;
-
-	delete m_border;
-	m_border  = tmp_border;
-
-	delete m_backing;
-	m_backing = tmp_backing;
-
-	for (Tp p=m_tiles.begin(); p!=m_tiles.end(); ++p)
-	  delete *p;
-
-	swap(m_tiles, tmp);
-
-	m_crop = scr.m_crop;
-      }
-    return *this;
-  } // end of copy assignment
-
-
-  screen_data::~screen_data()
-  {
-    delete m_mask;
-    delete m_border;
-    delete m_backing;
-
-    for(Tp p=m_tiles.begin(); p!= m_tiles.end(); ++p)
-      delete *p;
-  }
-
-  screen_data* screen_data::clone() const
-  {
-    return new screen_data(*this);
-  }
-
-
-  // superimpose a layer by affine scaling
-  // map child to inset (inset defaults to m_mask)
-  screen_data& screen_data::paste(const screen_data& child,
-				  const screen_mask& inset)
-  {
-    if (this != &child)
-      {
-	const double h_sc(inset.h_size()/child.h_size());
-	const double v_sc(inset.v_size()/child.v_size());
-
-	const pair tmp00(inset.bl() - (child.bl() & pair(h_sc, v_sc)));
-
-	affine af(tmp00 + pair(h_sc, 0), tmp00 + pair(0, v_sc), tmp00);
-
-	// backing
-	if (!child.m_backing->is_empty())
-	  {
-	    // child is const, so must copy tile
-	    pen_fill* temp(child.m_backing->clone());
-	    add_tile(temp->map_by(af));
-	  }
-
-	// tiles
-	for(Tp p=child.m_tiles.begin(); p!= child.m_tiles.end(); ++p)
-	  {
-	    tile* temp((*p)->clone());
-	    add_tile(temp->map_by(af));
-	  }
-
-	// border
-	if (!child.m_border->is_empty())
-	  {
-	    pen_line* temp(child.m_border->clone());
-	    add_tile(temp->map_by(af));
-	  }
-      }
-
-    return *this;
-  } // end of paste(child, inset)
-
-
-  screen_data& screen_data::paste(const screen_data& child)
-  {
-    if (this != &child)
-      {
-	const double h_sc(h_size()/child.h_size());
-	const double v_sc(v_size()/child.v_size());
-
-	const pair tmp00(bl() - (child.bl() & pair(h_sc, v_sc)));
-
-	affine af(tmp00 + pair(h_sc, 0), tmp00 + pair(0, v_sc), tmp00);
-
-	// backing
-	if (!child.m_backing->is_empty())
-	  {
-	    // child is const, so must copy tile
-	    pen_fill* temp(child.m_backing->clone());
-
-	    add_tile(temp->map_by(af));
-	  }
-
-	// tiles
-	for(Tp p=child.m_tiles.begin(); p!= child.m_tiles.end(); ++p)
-	  {
-	    tile* temp((*p)->clone());
-	    add_tile(temp->map_by(af));
-	  }
-
-	// border
-	if (!child.m_border->is_empty())
-	  {
-	    pen_line* temp(child.m_border->clone());
-	    add_tile(temp->map_by(af));
-	  }
-      }
-
-    return *this;
-  }
-
-  screen_data& screen_data::clear()
-  {
-    delete m_border;
-    m_border = new pen_line();
-
-    m_tiles.clear();
-
-    delete m_backing;
-    m_backing = new pen_fill();
-
-    m_crop = false;
-    return *this;
-  }
-
-  screen_data& screen_data::crop_to(const screen_mask& mask)
-  {
-    std::list<tile*> visibles;
-
-    if (!m_border->is_empty())
-      m_border->crop_to(mask);
-
-    if (!m_backing->is_empty())
-      m_backing->crop_to(mask);
-
-    for (Tp curr=m_tiles.begin(); curr!=m_tiles.end(); ++curr)
-      {
-	(*curr)->crop_to(mask);
-
-	if (!(*curr)->is_empty())
-	  visibles.push_back(*curr);
-      }
-
-    swap(m_tiles, visibles);
-    return *this;
-  }
-
-  screen_data& screen_data::crop()
-  {
-    return crop_to(*m_mask);
-  }
-
-
-  screen_data& screen_data::set_mask(const screen_mask& mask)
-  {
-    delete m_mask;
-    m_mask = mask.clone();
-
-    return *this;
-  }
-
-  screen_data& screen_data::set_crop(bool arg)
-  {
-    m_crop = arg;
-    return *this;
-  }
-
-  screen_data screen_data::extract(const pair& arg1, const pair& arg2) const
-  {
-    screen_data value(arg1, arg2);
-    value.set_crop(true);
-
-    for (Tp curr=m_tiles.begin(); curr!=m_tiles.end(); ++curr)
-      value.add_tile(*curr);
-
-    return value;
-  }
-
-  screen_data screen_data::extract_diamond(const pair& arg1,
-					   const pair& arg2) const
-  {
-    screen_data value(arg1, arg2);
-
-    value.set_mask(mask_diamond(arg1, arg2)).set_crop(true);
-
-    for (Tp curr=m_tiles.begin(); curr!=m_tiles.end(); ++curr)
-      value.add_tile(*curr);
-
-    return value;
-  }
-
-  screen_data screen_data::extract_ellipse(const pair& arg1,
-					   const pair& arg2) const
-  {
-    screen_data value(arg1, arg2);
-
-    value.set_mask(mask_ellipse(arg1, arg2)).set_crop(true);
-
-    for (Tp curr=m_tiles.begin(); curr!=m_tiles.end(); ++curr)
-      value.add_tile(*curr);
-
-    return value;
-  }
-
-
-  screen_data& screen_data::border(const Color& col, const std::string& len)
-  {
-    delete m_border;
-    m_border = new pen_line(m_mask->border(cam()(col), len));
-    m_crop = true;
-
-    return *this;
-  }
-
-
-  screen_data& screen_data::backing(const Color& col)
-  {
-    delete m_backing;
-    m_backing = new pen_fill(m_mask->backing(cam()(col)));
-    m_crop = true;
-
-    return *this;
-  }
-
-
-  screen_data& screen_data::border()
-  {
-    delete m_border;
-    m_border = new pen_line(m_mask->border());
-    m_crop = true;
-
-    return *this;
-  }
-
-
-  screen_data& screen_data::backing()
-  {
-    delete m_backing;
-    m_backing = new pen_fill(m_mask->backing());
-    m_crop = true;
-
-    return *this;
-  }
-
-  // screen cropping done in these two functions
-  void screen_data::add_tile(const tile& T)
-  {
-    tile* tmp(T.clone());
-    if (m_crop)
-      tmp->crop_to(*m_mask);
-
-    if (!tmp->is_empty())
-      m_tiles.push_back(tmp);
-  }
-
-  void screen_data::add_tile(tile* Tp)
-  {
-    tile* tmp(Tp->clone());
-    if (m_crop)
-      tmp->crop_to(*m_mask);
-
-    if (!tmp->is_empty())
-      m_tiles.push_back(tmp);
-  }
-
-
-  // affine operations on contents (not border, backing)
-  void screen_data::apply(const affine& af)
-  {
-    for (Tp curr=m_tiles.begin(); curr!=m_tiles.end(); ++curr)
-      (*curr)->map_by(af);
-  }
-
-  void screen_data::shift(const pair& arg)
-  {
-    affine af;
-    af.shift(arg);
-    apply(af);
-  }
-
-  // rotate by theta about ctr
-  void screen_data::rotate(double theta, const pair& ctr)
-  {
-    affine af;
-    af.rotate(theta, ctr);
-    apply(af);
-  }
-
-  // reflect in angle-theta line through ctr
-  void screen_data::reflect(double theta, const pair& ctr)
-  {
-    affine af;
-    af.reflect(theta, ctr);
-    apply(af);
-  }
-
-  // scale coord direction(s) fixing ctr
-  void screen_data::h_scale(double sc, const pair& ctr)
-  {
-    affine af;
-    af.h_scale(sc, ctr);
-    apply(af);
-  }
-
-  void screen_data::v_scale(double sc, const pair& ctr)
-  {
-    affine af;
-    af.v_scale(sc, ctr);
-    apply(af);
-  }
-
-  void screen_data::scale(double sc, const pair& ctr)
-  {
-    affine af;
-    af.scale(sc, ctr);
-    apply(af);
-  }
-
-  // shear, fixing ctr, e.g. h_shear(sc) : (x,y) -> (x+sc*y, y)
-  void screen_data::h_shear(double sc, const pair& ctr)
-  {
-    affine af;
-    af.h_shear(sc, ctr);
-    apply(af);
-  }
-
-  void screen_data::v_shear(double sc, const pair& ctr)
-  {
-    affine af;
-    af.v_shear(sc, ctr);
-    apply(af);
-  }
-
-
-  pair screen_data::tr() const
-  {
-    return m_tr;
-  }
-
-  pair screen_data::tl() const
-  {
-    return pair(m_bl.x1(), m_tr.x2());
-  }
-
-  pair screen_data::bl() const
-  {
-    return m_bl;
-  }
-
-  pair screen_data::br() const
-  {
-    return pair(m_tr.x1(), m_bl.x2());
-  }
-
-
-  pair screen_data::t() const
-  {
-    return pair(0.5*(m_bl.x1() + m_tr.x1()), m_tr.x2());
-  }
-
-  pair screen_data::b() const
-  {
-    return pair(0.5*(m_bl.x1() + m_tr.x1()), m_bl.x2());
-  }
-
-  pair screen_data::l() const
-  {
-    return pair(m_bl.x1(), 0.5*(m_bl.x2() + m_tr.x2()));
-  }
-
-  pair screen_data::r() const
-  {
-    return pair(m_tr.x1(), 0.5*(m_bl.x2() + m_tr.x2()));
-  }
-
-  pair screen_data::c() const
-  {
-    return pair(0.5*(m_bl.x1() + m_tr.x1()), 0.5*(m_bl.x2() + m_tr.x2()));
-  }
-
-
-  double screen_data::h_min()  const
-  {
-    return m_bl.x1();
-  }
-
-  double screen_data::h_max()  const
-  {
-    return m_tr.x1();
-  }
-
-  double screen_data::h_size() const
-  {
-    return m_tr.x1() - m_bl.x1();
-  }
-
-  double screen_data::h_avg()  const
-  {
-    return 0.5*(m_bl.x1() + m_tr.x1());
-  }
-
-
-  double screen_data::v_min()  const
-  {
-    return m_bl.x2();
-  }
-
-  double screen_data::v_max()  const
-  {
-    return m_tr.x2();
-  }
-
-  double screen_data::v_size() const
-  {
-    return m_tr.x2() - m_bl.x2();
-  }
-
-  double screen_data::v_avg()  const
-  {
-    return 0.5*(m_bl.x2() + m_tr.x2());
-  }
-
-  std::string screen_data::print_to(const format& fmt, const length& len,
-				    bool wrap) const
-  {
-    std::ostringstream obuf;
-
-    if (wrap)
-      {
-	obuf << fmt.start_picture(tr()-bl(), bl());
-	fmt.reset_state(); // ensures drawing attribs set properly below
-      }
-
-    if (!m_backing->is_empty())
-      {
-	m_backing->add_to_pallet();
-
-	obuf << m_backing->print_to(fmt, len.units());
-      }
-
-    for (Tp curr = m_tiles.begin(); curr != m_tiles.end(); ++curr)
-      {
-	(*curr)->add_to_pallet();
-
-	obuf << (*curr)->print_to(fmt, len.units());
-      }
-
-    if (!m_border->is_empty())
-      {
-	m_border->add_to_pallet();
-
-	obuf << m_border->print_to(fmt, len.units());
-      }
-
-    if (wrap)
-      obuf << fmt.end_picture();
-
-    return obuf.str();
-  } // end of print_to()
-
-} // end of namespace
diff --git a/graphics/epix/screen_data.h b/graphics/epix/screen_data.h
deleted file mode 100644
index 582ec1d555..0000000000
--- a/graphics/epix/screen_data.h
+++ /dev/null
@@ -1,153 +0,0 @@
-/* 
- * screen_data.h -- ePiX::screen class implementation
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.18
- * Last Change: September 16, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-/*
- * This file implements the screen class, a Cartesian rectangle into
- * which objects are drawn. This file is not part of epix.h.
- */
-#ifndef EPIX_SCREEN_DATA
-#define EPIX_SCREEN_DATA
-
-#include <string>
-#include <list>
-
-#include "pairs.h"
-
-namespace ePiX {
-
-  class affine;
-  class Color;
-  class format;
-  class length;
-  class pen_fill;
-  class pen_line;
-  class screen_mask;
-  class tile;
-
-  class screen_data {
-  public:
-    screen_data(const pair&, const pair&);
-
-    screen_data(const screen_data&);
-    screen_data& operator= (const screen_data&);
-    ~screen_data();
-
-    screen_data* clone() const;
-
-    screen_data& crop_to(const screen_mask&);
-    screen_data& crop();
-
-
-    screen_data& set_mask(const screen_mask&);
-    screen_data& set_crop(bool);
-
-    // cut out and return a region
-    screen_data extract(const pair&, const pair&) const;
-    screen_data extract_diamond(const pair&, const pair&) const;
-    screen_data extract_ellipse(const pair&, const pair&) const;
-
-    // inset and import
-    screen_data& paste(const screen_data& child, const screen_mask& inset);
-    screen_data& paste(const screen_data& child);
-
-    screen_data& clear();
-
-    screen_data& border(const Color&, const std::string&);
-    screen_data& backing(const Color&);
-
-    screen_data& border();
-    screen_data& backing();
-
-    void add_tile(const tile&);
-    void add_tile(tile*);
-
-    // wrap=true -> encapsulate in a picture, for legends
-    std::string print_to(const format&, const length&, bool wrap=false) const;
-
-    // affine operations on contents (not border, backing)
-    void   apply(const affine& af);
-    void   shift(const pair& arg);
-
-    // rotate by theta about ctr
-    void  rotate(double theta, const pair& ctr = pair(0,0));
-
-    // reflect in angle-theta line through ctr
-    void reflect(double theta, const pair& ctr = pair(0,0));
-
-    // scale coord direction(s) fixing ctr
-    void h_scale(double, const pair& ctr=pair(0,0));
-    void v_scale(double, const pair& ctr=pair(0,0));
-    void   scale(double, const pair& ctr=pair(0,0));
-
-    // shear, fixing ctr, e.g. h_shear(sc) : (x,y) -> (x+sc*y, y)
-    void h_shear(double sc, const pair& ctr=pair(0,0));
-    void v_shear(double sc, const pair& ctr=pair(0,0));
-
-    pair tr() const;
-    pair tl() const;
-    pair bl() const;
-    pair br() const;
-
-    pair  t() const;
-    pair  b() const;
-    pair  l() const;
-    pair  r() const;
-    pair  c() const;
-
-    double h_min()  const;
-    double h_max()  const;
-    double h_size() const;
-    double h_avg()  const;
-
-    double v_min()  const;
-    double v_max()  const;
-    double v_size() const;
-    double v_avg()  const;
-
-  private:
-    pair m_bl;
-    pair m_tr;
-
-    screen_mask* m_mask;
-    pen_line* m_border;
-    pen_fill* m_backing;
-
-    bool m_crop;
-
-    std::list<tile*> m_tiles;
-  }; // end of class screen_data
-
-} // end of namespace
-
-#endif /* EPIX_SCREEN_DATA */
diff --git a/graphics/epix/screen_mask.cc b/graphics/epix/screen_mask.cc
deleted file mode 100644
index e652685e4e..0000000000
--- a/graphics/epix/screen_mask.cc
+++ /dev/null
@@ -1,55 +0,0 @@
-/* 
- * screen_mask.cc -- ePiX::screen_mask interface
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.4
- * Last Change: June 17, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include "constants.h"
-
-#include "pairs.h"
-
-#include "screen_mask.h"
-
-namespace ePiX {
-
-  //// screen_mask::alignment points ////
-  pair screen_mask::tr() const { return pair(h_max(), v_max()); }
-  pair screen_mask::tl() const { return pair(h_min(), v_max()); }
-  pair screen_mask::bl() const { return pair(h_min(), v_min()); }
-  pair screen_mask::br() const { return pair(h_max(), v_min()); }
-
-  pair screen_mask::t()  const { return pair(h_avg(), v_max()); }
-  pair screen_mask::b()  const { return pair(h_avg(), v_min()); }
-  pair screen_mask::l()  const { return pair(h_min(), v_avg()); }
-  pair screen_mask::r()  const { return pair(h_max(), v_avg()); }
-  pair screen_mask::c()  const { return pair(h_avg(), v_avg()); }
-
-} // end of ePiX namespace
diff --git a/graphics/epix/screen_mask.h b/graphics/epix/screen_mask.h
deleted file mode 100644
index 0ec475f3db..0000000000
--- a/graphics/epix/screen_mask.h
+++ /dev/null
@@ -1,97 +0,0 @@
-/* 
- * screen_mask.h -- ePiX::screen_mask interface, for screen cropping
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.8
- * Last Change: July 17, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#ifndef EPIX_SCREEN_MASK
-#define EPIX_SCREEN_MASK
-
-#include <list>
-#include <string>
-
-#include "edge_data.h"
-
-namespace ePiX {
-
-  class pair;
-
-  class Color;
-
-  class length;
-  class pen_fill;
-  class pen_line;
-
-  class screen_mask {
-  public:
-    virtual ~screen_mask() { }
-
-    virtual screen_mask* clone() const = 0;
-
-    // alignment points
-    pair tr() const;
-    pair tl() const;
-    pair bl() const;
-    pair br() const;
-
-    pair  t() const;
-    pair  b() const;
-    pair  l() const;
-    pair  r() const;
-    pair  c() const;
-
-    // cropping facilities (for tiles: glyph, pen_line, pen_fill resp.)
-    virtual bool crops(const pair& arg) const = 0; // false if arg visible
-    virtual std::list<edge2d>& crop_path(std::list<edge2d>&) const = 0;
-    virtual std::list<edge2d>& crop_loop(std::list<edge2d>&) const = 0;
-
-    // extreme and average coordinates, dimensions
-    virtual double h_min()  const = 0;
-    virtual double h_max()  const = 0;
-    virtual double h_size() const = 0;
-    virtual double h_avg()  const = 0;
-
-    virtual double v_min()  const = 0;
-    virtual double v_max()  const = 0;
-    virtual double v_size() const = 0;
-    virtual double v_avg()  const = 0;
-
-    // convert us to screen border or backing
-    virtual pen_line border(const Color&, const length&) const = 0;
-    virtual pen_fill backing(const Color&) const = 0;
-
-    virtual pen_line border() const = 0;
-    virtual pen_fill backing() const = 0;
-  }; // end of class screen_mask
-
-} // end of namespace
-
-#endif /* EPIX_SCREEN_MASK */
diff --git a/graphics/epix/segment.cc b/graphics/epix/segment.cc
deleted file mode 100644
index 3ea5eb3760..0000000000
--- a/graphics/epix/segment.cc
+++ /dev/null
@@ -1,111 +0,0 @@
-/* 
- * segment.cc -- ePiX::Segment class and mathematical operators
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.9
- * Last Change: July 30, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include "triples.h"
-
-#include "path.h"
-#include "segment.h"
-
-namespace ePiX {
-
-  Segment::Segment(const P& p1, const P& p2)
-    : m_endpt1(p1), m_endpt2(p2), m_malformed(false) { }
-
-  Segment::Segment(bool tag) : m_malformed(true) { }
-
-  P Segment::end1() const
-  {
-    return m_endpt1;
-  }
-
-  P Segment::end2() const
-  {
-    return m_endpt2;
-  }
-
-  bool Segment::malformed() const
-  {
-    return m_malformed;
-  }
-
-  // translate
-  Segment& Segment::shift(const P& arg)
-  {
-    if (!m_malformed)
-      {
-	m_endpt1 += arg;
-	m_endpt2 += arg;
-      }
-    return *this;
-  }
-
-  Segment& Segment::move_to(const P& arg)
-  {
-    if (!m_malformed)
-      {
-	const P dX(arg - 0.5*(m_endpt1 + m_endpt2));
-	m_endpt1 += dX;
-	m_endpt2 += dX;
-      }
-    return *this;
-  }
-
-  Segment& Segment::scale(double c)
-  {
-    if (!m_malformed)
-      {
-	const P ctr(0.5*(m_endpt1 + m_endpt2));
-
-	m_endpt1 = ctr + c*(m_endpt1 - ctr);
-	m_endpt2 = ctr + c*(m_endpt2 - ctr);
-      }
-    return *this;
-  }
-
-  P Segment::midpoint() const
-  {
-    return 0.5*(m_endpt1 + m_endpt2);
-  }
-
-  void Segment::draw() const
-  {
-    if (m_malformed)
-      return;
-
-    // else
-    path temp(m_endpt1, m_endpt2);
-
-    temp.draw();
-  }
-} // end of namespace
diff --git a/graphics/epix/segment.h b/graphics/epix/segment.h
deleted file mode 100644
index 5a19b1dd6a..0000000000
--- a/graphics/epix/segment.h
+++ /dev/null
@@ -1,84 +0,0 @@
-/* 
- * segment.h -- ePiX::Segment class
- * 
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.9
- * Last Change: July 30, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-/*
- *   This file provides:
- *
- *   The Segment class (unordered pair of points), and operators:
- *    - end1(), end2() (no guaranteed order)
- *    - Translation operators shift(P), move_to(P)
- *    - Stretch about midpoint: scale(double)
- *    - draw() (ePiX line)
- *    - midpoint();
- */
-
-#ifndef EPIX_SEGMENT
-#define EPIX_SEGMENT
-
-#include "triples.h"
-
-namespace ePiX {
-
-  class Segment {
-  public:
-    Segment(const P&, const P&); // endpoints
-
-    Segment(bool); // malformed Segment for intersection operators
-
-    // Segment ends are not distinguished geometrically,
-    // so these functions should normally be used in tandem.
-    P end1() const;
-    P end2() const;
-
-    bool malformed() const;
-
-    // translate
-    Segment& shift(const P&);
-    Segment& move_to(const P&);
-
-    Segment& scale(double);
-
-    P midpoint() const;
-
-    void draw() const;
-
-  private:
-    P m_endpt1;
-    P m_endpt2;
-
-    bool m_malformed;
-  }; // end of Segment class
-
-} // end of namespace
-#endif /* EPIX_SEGMENT */
diff --git a/graphics/epix/sphere.cc b/graphics/epix/sphere.cc
deleted file mode 100644
index 5f172e0fb0..0000000000
--- a/graphics/epix/sphere.cc
+++ /dev/null
@@ -1,131 +0,0 @@
-/* 
- * sphere.cc -- ePiX::Sphere class and mathematical operators
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.9
- * Last Change: July 30, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include <cmath>
-
-#include "errors.h"
-
-#include "triples.h"
-
-#include "functions.h"
-
-#include "camera.h"
-#include "circle.h"
-
-#include "sphere.h"
-
-namespace ePiX {
-
-  Sphere::Sphere(const P& ctr, double rad)
-    : m_ctr(ctr), m_rad(rad), m_malformed(false) { }
-
-  Sphere::Sphere(const P& ctr, const P& pt)
-    : m_ctr(ctr), m_rad(norm(pt-ctr)), m_malformed(false) { }
-
-  P Sphere::center() const
-  {
-    return m_ctr;
-  }
-
-  double Sphere::radius() const
-  {
-    return m_rad;
-  }
-
-  bool Sphere::malformed() const
-  {
-    return m_malformed;
-  }
-
-  // translation
-  Sphere& Sphere::shift(const P& arg)
-  {
-    if (!m_malformed)
-      m_ctr += arg;
-    return *this;
-  }
-
-  Sphere& Sphere::move_to(const P& arg)
-  {
-    if (!m_malformed)
-      m_ctr = arg;
-    return *this;
-  }
-
-  Sphere& Sphere::scale(double& arg)
-  {
-    if (!m_malformed)
-      m_rad *= arg;
-    return *this;
-  }
-
-
-  void Sphere::draw() const
-  {
-    if (m_malformed)
-      return;
-
-    // else
-    P location(cam().viewpt());
-
-    P dir(m_ctr - location);
-    double dist(norm(dir));
-
-    if (dist <= m_rad)
-      epix_warning("Cannot draw sphere enclosing camera");
-	
-    else
-      {
-	dir *= 1/dist;
-	double x(m_rad*m_rad/dist);
-	
-	Circle temp(m_ctr - x*dir, sqrt((m_rad-x)*(m_rad+x)), dir);
-	temp.draw();
-      }
-  } // end of Sphere::photo()
-
-
-  //// global functions ////
-  void sphere(const P& ctr, double rad)
-  {
-    Sphere S(ctr, rad);
-    S.draw();
-  }
-
-  void sphere(const P& ctr, const P& pt)
-  {
-    Sphere S(ctr, pt);
-    S.draw();
-  }
-} // end of namespace
diff --git a/graphics/epix/sphere.h b/graphics/epix/sphere.h
deleted file mode 100644
index fa043ca382..0000000000
--- a/graphics/epix/sphere.h
+++ /dev/null
@@ -1,87 +0,0 @@
-/* 
- * sphere.h -- ePiX::Sphere class
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.9
- * Last Change: July 30, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-/*
- *   This file provides:
- *
- *   The Sphere class (center, radius), and operators:
- *    - Sphere += P (translate by <P>)
- *    - Sphere *= double (scale about center)
- *    - draw() (ePiX line)
- *    - center();
- *    - radius();
- *
- *   Hiding test, latitude and longitudes on a sphere.
- */
-#ifndef EPIX_SPHERE
-#define EPIX_SPHERE
-
-#include "triples.h"
-
-namespace ePiX {
-
-  class Sphere {
-  public:
-    Sphere(const P& ctr=P(0,0,0), double rad=1);
-    Sphere(const P& ctr, const P& pt);
-
-    P center() const;
-    double radius() const;
-
-    bool malformed() const; // always returns false, currently
-
-    // translation
-    Sphere& shift(const P&);
-    Sphere& move_to(const P&);
-
-    // scale radius
-    Sphere& scale(double&);
-
-    void draw() const;
-
-  private:
-    P m_ctr;
-    double m_rad;
-
-    bool m_malformed;
-  }; // end of Sphere class
-
-
-  // global horizon-drawing functions
-  void sphere(const P& ctr=P(0,0,0), double rad=1);
-  void sphere(const P& ctr, const P& pt);
-
-} // end of namespace
-
-#endif /* EPIX_SPHERE */
diff --git a/graphics/epix/spline.cc b/graphics/epix/spline.cc
deleted file mode 100644
index 286d63d57a..0000000000
--- a/graphics/epix/spline.cc
+++ /dev/null
@@ -1,145 +0,0 @@
-/* 
- * spline.cc -- ePiX n_spline class
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.9
- * Last Change: August 02, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include "path.h"
-#include "spline.h"
-
-namespace ePiX {
-  // natural spline constructor
-  n_spline::n_spline(const std::vector<P>& data, bool loop)
-    : m_vertices(data)
-  {
-    if (loop)
-      m_vertices.push_back(m_vertices.at(0));
-
-    const unsigned int N(m_vertices.size()-1);
-
-    // notation and algorithm from John H. Matthews and Kurtis K. Fink
-    std::vector<double> tmp_h(N+1); // h_k = x_{k+1} - x_k
-    std::vector<double> tmp_d(N+1); // d_k = (y_{k+1} - y_k)/h_k
-    std::vector<double> tmp_u(N+1); // u_k = 6*(d_{k+1} - d_k)
-    std::vector<double> tmp_y(N+1); // y_k
-
-    // entries of tridiagonal coefficient matrix
-    std::vector<double> tmp_A(N+1);   // subdiagonal of coefficient matrix
-    std::vector<double> tmp_C(N+1);   // superdiagonal
-    std::vector<double> tmp_D(N+1); // diagonal
-
-    std::vector<double> tmp_m(N+1); // m_k = S"(x_k), 1 <= k <= N-1
-
-    // initialize...
-    for (unsigned int i = 0; i <= N; ++i)
-      {
-	P curr(m_vertices.at(i));
-
-	tmp_y.at(i) = curr.x2();
-
-	if (i <= N-1)
-	  {
-	    P next(m_vertices.at(i+1));
-
-	    tmp_h.at(i) = (next.x1() - curr.x1());
-	    tmp_d.at(i) = (next.x2() - curr.x2())/tmp_h.at(i);
-
-	    if (0 < i)
-	      {
-		tmp_u.at(i) = 6*(tmp_d.at(i) - tmp_d.at(i-1));
-		tmp_D.at(i) = 2*(tmp_h.at(i) + tmp_h.at(i-1));
-
-		if (i <= N-2)
-		  {
-		    tmp_A.at(i) = tmp_h.at(i);
-		    tmp_C.at(i) = tmp_h.at(i);
-		  }
-	      }
-	  }
-      }
-
-    for (unsigned int i=2; i <= N; ++i)
-      {
-	const double ratio(tmp_A.at(i-1)/tmp_D.at(i-1));
-
-	tmp_D.at(i) -= ratio*tmp_C.at(i-1);
-	tmp_u.at(i) -= ratio*tmp_u.at(i-1);
-      }
-
-    tmp_m.at(N) = tmp_u.at(N-1)/tmp_D.at(N-1);
-
-    for (unsigned int i=N-1; 0 < i; --i)
-      tmp_m.at(i) = (tmp_u.at(i) - tmp_C.at(i)*tmp_m.at(i+1))/tmp_D.at(i);
-
-    std::vector<double> tmp_k0(N);
-    std::vector<double> tmp_k1(N);
-    std::vector<double> tmp_k2(N);
-    std::vector<double> tmp_k3(N);
-
-    for (unsigned int i=0; i < N; ++i)
-      {
-	tmp_k0.at(i) = tmp_y.at(i);
-	tmp_k1.at(i)
-	  = tmp_d.at(i) - (tmp_h.at(i)/6)*(2*tmp_m.at(i) + tmp_m.at(i+1));
-
-	tmp_k2.at(i) =  0.5*tmp_m.at(i);
-	tmp_k3.at(i) = (tmp_m.at(i+1) - tmp_m.at(i))/(6*tmp_h.at(i));
-      }
-
-    swap(tmp_k0, m_k0);
-    swap(tmp_k1, m_k1);
-    swap(tmp_k2, m_k2);
-    swap(tmp_k3, m_k3);
-  }
-
-  path n_spline::data(const unsigned int num_pts) const
-  {
-    path value;
-    for (unsigned int i=0; i < m_vertices.size()-1; ++i)
-      {
-	const double Xmin(m_vertices.at(i).x1());
-	const double dx((m_vertices.at(i+1).x1() - Xmin)/num_pts);
-
-	for (unsigned int j=0; j<=num_pts; ++j)
-	  {
-	    const double w(j*dx);
-	    const double x(Xmin + w);
-
-	    // Horner's form
-      double y((((m_k3.at(i)*w) + m_k2.at(i))*w + m_k1.at(i))*w + m_k0.at(i));
-
-	    value.pt(P(x, y));
-	  }
-      }	    
-    return value;
-  }
-
-} // end of namespace
diff --git a/graphics/epix/spline.h b/graphics/epix/spline.h
deleted file mode 100644
index bf8630a39f..0000000000
--- a/graphics/epix/spline.h
+++ /dev/null
@@ -1,63 +0,0 @@
-/* 
- * spline.h -- ePiX spline class
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.3
- * Last Change: March 04, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#ifndef EPIX_SPLINE
-#define EPIX_SPLINE
-
-#include <vector>
-#include "triples.h"
-
-namespace ePiX {
-
-  class path;
-
-  class n_spline {
-  public:
-
-    n_spline(const std::vector<P>& data, bool loop=false);
-
-    path data(const unsigned int) const;
-
-  private:
-    std::vector<P> m_vertices;
-
-    // coefficient sequences
-    std::vector<double> m_k0;
-    std::vector<double> m_k1;
-    std::vector<double> m_k2;
-    std::vector<double> m_k3;
-  }; // end of class n_spline
-
-} // end of namespace
-
-#endif /* EPIX_SPLINE */
diff --git a/graphics/epix/spline_data.h b/graphics/epix/spline_data.h
deleted file mode 100644
index ea47eeb982..0000000000
--- a/graphics/epix/spline_data.h
+++ /dev/null
@@ -1,51 +0,0 @@
-/* 
- * splinee_data.h -- ePiX parametric spline functions
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.4
- * Last Change: June 18, 2007
- *
- * 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- *
- *
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#ifndef EPIX_SPLINE_DATA
-#define EPIX_SPLINE_DATA
-
-namespace ePiX {
-
-  template <typename T>
-    T spl_pt(const T& p1, const T& p2, const T& p3, double t)
-    {
-      return (1-t)*(1-t)*p1 + 2*t*(1-t)*p2 + t*t*p3;
-    }
-
-  template <typename T>
-    T spl_pt(const T& p1, const T& p2, const T& p3, const T& p4, double t)
-    {
-      const double s(1-t);
-      return s*s*(s*p1 + 3*t*p2) + t*t*(3*s*p3 + t*p4);
-    }
-} // end of namespace
-
-#endif /* EPIX_SPLINE_DATA */
diff --git a/graphics/epix/state.cc b/graphics/epix/state.cc
deleted file mode 100644
index 44802bf991..0000000000
--- a/graphics/epix/state.cc
+++ /dev/null
@@ -1,509 +0,0 @@
-/* 
- * state.cc -- ePiX's current drawing state
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.22
- * Last Change: September 24, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include "constants.h"
-#include "errors.h"
-#include "triples.h"
-#include "Color.h"
-
-#include "length.h"
-
-#include "camera.h"
-
-#include "angle_units.h"
-#include "arrow_style.h"
-#include "label_style.h"
-#include "marker_style.h"
-#include "paint_style.h"
-#include "path_style.h"
-
-#include "active_screen.h"
-#include "screen.h"
-
-#include "clipping.h"
-
-#include "state.h"
-
-namespace ePiX {
-
-  // set camera position
-  void viewpoint(const P& arg)
-  {
-    cam().at(arg);
-  }
-
-  void viewpoint(double x1, double x2, double x3)
-  {
-    cam().at(P(x1, x2, x3));
-  }
-
-  // Set angular mode
-  void radians()
-  {
-    the_angle_style().set_radians_mode();
-  }
-
-  void degrees()
-  {
-    the_angle_style().set_degrees_mode();
-  }
-
-  void revolutions()
-  {
-    the_angle_style().set_revolutions_mode();
-  }
-
-
-  // number of current units in a full turn
-  double full_turn()
-  {
-    return the_angle_style().from_degrees(360.0);
-  }
-
-
-  // clipping is always on
-  void clip(bool arg) { }
-
-  void clip_box()
-  {
-    the_clip_box() = clip_state();
-  }
-
-  void clip_box(const P& arg1, const P& arg2)
-  {
-    the_clip_box() = clip_state(arg1, arg2);
-  }
-
-  void clip_to(const P& arg)
-  {
-    the_clip_box() = clip_state(P(0,0,0), arg);
-  }
-
-  void clip_box(const P& arg)
-  {
-    the_clip_box() = clip_state(-arg, arg);
-  }
-
-  // add a clip face; perp points inward
-  void clip_face(const P& loc, const P& perp)
-  {
-    the_clip_box().add_face(loc, perp);
-  }
-
-  // add parallel clip planes
-  void clip_slice(const P& loc, const P& perp)
-  {
-    the_clip_box().add_face(loc-0.5*EPIX_EPSILON*perp, perp)
-      .add_face(loc+0.5*EPIX_EPSILON*perp, -perp);
-  }
-
-  void clip_slice(const P& perp, double thickness)
-  {
-    clip_slice(P(0,0,0), perp, thickness);
-  }
-
-  void clip_slice(const P& perp)
-  {
-    clip_slice(P(0,0,0), perp);
-  }
-
-  void clip_slice(const P& loc, const P& perp, double thickness)
-  {
-    the_clip_box().add_face(loc-0.5*thickness*perp, perp)
-      .add_face(loc+0.5*thickness*perp, -perp);
-  }
-
-  // remove user-specified clip planes, preserve clip box settings
-  void clip_restore()
-  {
-    the_clip_box().clear_extras();
-  }
-
-
-  // Set crop state and select region
-  void set_crop(bool arg)
-  {
-    active_screen()->set_crop(arg);
-  }
-
-  void crop()
-  {
-    active_screen()->crop();
-  }
-
-  void crop_rectangle(const P& sw, const P& ne)
-  {
-    active_screen()->crop_mask_rectangle(sw, ne).set_crop(true);
-  }
-
-  void crop_ellipse(const P& sw, const P& ne)
-  {
-    active_screen()->crop_mask_ellipse(sw, ne).set_crop(true);
-  }
-
-  void crop_diamond(const P& sw, const P& ne)
-  {
-    active_screen()->crop_mask_diamond(sw, ne).set_crop(true);
-  }
-
-  void crop_rectangle()
-  {
-    active_screen()->crop_mask_rectangle().set_crop(true);
-  }
-
-  void crop_ellipse()
-  {
-    active_screen()->crop_mask_ellipse().set_crop(true);
-  }
-
-  void crop_diamond()
-  {
-    active_screen()->crop_mask_diamond().set_crop(true);
-  }
-
-
-  void crop_box(const P& arg1, const P& arg2)
-  {
-    active_screen()->crop_mask_rectangle(arg1, arg2).set_crop(true);
-  }
-
-  void crop_box() // (re)set active crop box to active bounding box
-  {
-    active_screen()->crop_mask_rectangle().set_crop(true);
-  }
-
-
-  // Set font size and face, label angle, mask color
-  void font_size(const std::string& arg)
-  {
-    the_label_style().fontsize(arg);
-  }
-
-  void font_face(const std::string& arg)
-  {
-    the_label_style().fontface(arg);
-  }
-
-  void label_color(const Color& col)
-  {
-    the_label_style().text_color(col);
-  }
-
-  void label_angle(double th)
-  {
-    the_label_style().label_angle(th);
-  }
-
-  void label_mask(const Color& arg)
-  {
-    the_label_style().mask_color(arg);
-  }
-
-  void label_mask()
-  {
-    the_label_style().mask_color(White());
-  }
-
-  void label_pad(std::string len)
-  {
-    the_label_style().label_padding(length(len));
-  }
-
-  void label_border(const Color& col, double len)
-  {
-    the_label_style().label_border(pen_data(col, length(len)));
-  }
-
-  void label_border(const Color& col, std::string len)
-  {
-    the_label_style().label_border(pen_data(col, len));
-  }
-
-  // set color only
-  void label_border(const Color& col)
-  {
-    length len(the_label_style().label_border().width());
-    the_label_style().label_border(pen_data(col, len));
-  }
-
-  // set width only
-  void label_border(double len)
-  {
-    Color col(the_label_style().label_border().color());
-    the_label_style().label_border(pen_data(col, length(len)));
-  }
-
-  void label_border(std::string len)
-  {
-    Color col(the_label_style().label_border().color());
-    the_label_style().label_border(pen_data(col, len));
-  }
-
-  void no_label_border()
-  {
-    label_border("0pt");
-  }
-
-
-  // Gray depth, path filling, [fill color]
-  void gray(double depth)
-  {
-    the_paint_style().fill_color(Black(depth));
-  }
-
-  // new function
-  void fill(const Color& col)
-  {
-    the_paint_style().fill_color(col);
-    the_paint_style().fill_flag(!col.is_unset());
-  }
-
-  void fill(bool arg)
-  {
-    the_paint_style().fill_flag(arg);
-    if (arg && the_paint_style().fill_color().is_unset())
-      the_paint_style().fill_color(White());
-  }
-
-  void nofill()
-  {
-    the_paint_style().fill_flag(false);
-  }
-
-
-  // Arrowhead parameters
-  void arrow_width(double w)
-    {
-      the_arrowhead_style().width(w);
-    }
-
-  void arrow_ratio(double r)
-    {
-      the_arrowhead_style().ratio(r);
-    }
-
-  void arrow_inset(double arg)
-    {
-      the_arrowhead_style().inset(arg);
-    }
-
-  void arrow_fill(bool fill)
-    {
-      the_arrowhead_style().fill(fill);
-    }
-
-
-  // Set (approximate) length of dashes, dot separation
-  void dash_size(double len)
-  {
-    the_path_style().separation(len);
-  }
-
-  void dot_sep(double len)
-  {
-    dash_size(len);
-  }
-
-  // Dot/box marker size
-  void dot_size(double diam)
-  {
-    the_mark_size().dot_size(diam);
-  }
-
-  void tick_size(double len)
-  {
-    the_mark_size().tick_size(len);
-  }
-
-  // Line style
-  void line_style(std::string style)
-  {
-    the_path_style() = path_state(style);
-  }
-
-  void solid()
-  {
-    line_style("-");
-  }
-
-  void dashed()
-  {
-    line_style("-  -");
-  }
-
-  void dotted()
-  {
-    line_style(" . ");
-  }
-
-
-  // Line width
-  void pen(const std::string& len)
-  {
-    the_paint_style().line_width(length(len));
-  }
-
-  void pen(double wd)
-  {
-    the_paint_style().line_width(length(wd));
-  }
-
-
-  void bbold()
-  {
-    the_paint_style().line_width(BBOLD_WIDTH);
-  }
-
-  void bold()
-  {
-    the_paint_style().line_width(BOLD_WIDTH);
-  }
-
-  void plain()
-  {
-    the_paint_style().line_width(PLAIN_WIDTH);
-  }
-
-  // line width and color
-  void bbold(const Color& col)
-  {
-    the_paint_style().line_color(col);
-    the_paint_style().line_width(BBOLD_WIDTH);
-  }
-
-  void bold(const Color& col)
-  {
-    the_paint_style().line_color(col);
-    the_paint_style().line_width(BOLD_WIDTH);
-  }
-
-  void plain(const Color& col)
-  {
-    the_paint_style().line_color(col);
-    the_paint_style().line_width(PLAIN_WIDTH);
-  }
-
-  void pen(const Color& col)
-  {
-    the_paint_style().line_color(col);
-  }
-  void pen(const Color& col, double len)
-  {
-    the_paint_style().line_color(col);
-    the_paint_style().line_width(length(len));
-  }
-  void pen(const Color& col, std::string len)
-  {
-    the_paint_style().line_color(col);
-    the_paint_style().line_width(length(len));
-  }
-
-  // base width and color
-  void base(const Color& col)
-  {
-    the_paint_style().base_color(col);
-  }
-  void base(const Color& col, double len)
-  {
-    the_paint_style().base_color(col);
-    the_paint_style().base_width(length(len));
-  }
-  void base(const Color& col, std::string len)
-  {
-    the_paint_style().base_color(col);
-    the_paint_style().base_width(length(len));
-  }
-
-
-  // Red-Blue-Green
-  void rgb(double r, double g, double b)
-  {
-    the_paint_style().line_color(RGB(r, g, b));
-    the_paint_style().fill_color(RGB(r, g, b));
-    the_label_style().text_color(RGB(r, g, b));
-  }
-
-  // Cyan-Magenta-Yellow-Black
-  void cmyk(double c, double m, double y, double k)
-  {
-    the_paint_style().line_color(CMYK(c, m, y, k));
-    the_paint_style().fill_color(CMYK(c, m, y, k));
-    the_label_style().text_color(CMYK(c, m, y, k));
-  }
-
-  void rgb(const P& arg)
-  {
-    rgb(arg.x1(), arg.x2(), arg.x3());
-  }
-
-  void cmyk(const P& arg)
-  {
-    cmyk(arg.x1(), arg.x2(), arg.x3(), 0);
-  }
-
-  // primary colors
-  void red(double d)
-  {
-    rgb(d,0,0);
-  }
-  void green(double d)
-  {
-    rgb(0,d,0);
-  }
-  void blue(double d)
-  {
-    rgb(0,0,d);
-  }
-  void white(double d)
-  {
-    rgb(d,d,d);
-  }
-  void black(double d)
-  {
-    rgb(1-d,1-d,1-d);
-  }
-
-  void cyan(double d)
-  {
-    cmyk(d,0,0,0);
-  }
-  void magenta(double d)
-  {
-    cmyk(0,d,0,0);
-  }
-  void yellow(double d)
-  {
-    cmyk(0,0,d,0);
-  }
-} // end of namespace
diff --git a/graphics/epix/state.h b/graphics/epix/state.h
deleted file mode 100644
index 207a39b33e..0000000000
--- a/graphics/epix/state.h
+++ /dev/null
@@ -1,213 +0,0 @@
-/* 
- * state.h -- ePiX global functions to control current drawing state
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.22
- * Last Change: September 24, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-/*
- * This file contains the (old) user interface governing:
- *
- *  [] Angular mode
- *  [] Clipping and cropping
- *  [] Font size and face, label angle, mask color
- *  [] Gray depth, path filling, fill color
- *  [] Whether to use PSTricks macros
- *  [] Arrowhead parameters
- *  [] Line style, dash length, dot size
- *  [] Line width
- *  [] Line/text color
- */
-
-#ifndef EPIX_STATE
-#define EPIX_STATE
-
-#include <string>
-
-namespace ePiX {
-
-  class Color;
-  class P;
-
-  // set camera position
-  void viewpoint(const P&);
-  void viewpoint(double, double, double);
-
-  // Set angular mode
-  void radians();
-  void degrees();
-  void revolutions();
-
-  // number of current angle units in one full turn
-  double full_turn();
-
-  // set clip box
-  void clip(bool arg=true); // no effect
-  void clip_box(); // default (very large)
-  void clip_box(const P& arg1, const P& arg2);
-  void clip_to(const P& arg);
-  void clip_box(const P& arg);
-
-  // add a clip face; perp points inward
-  void clip_face(const P& loc, const P& perp);
-
-  // add parallel clip planes
-  void clip_slice(const P& loc, const P& perp);
-  void clip_slice(const P& loc, const P& perp, double thickness);
-
-  // loc = origin
-  void clip_slice(const P& perp);
-  void clip_slice(const P& perp, double thickness);
-
-  // remove user-specified clip planes, preserve clip box settings
-  void clip_restore();
-
-  // set flag on active screen; contents unchanged
-  void set_crop(bool arg=true);
-
-  // crop contents of active screen
-  void crop();
-
-  //// New cropping functions ////
-  // set crop mask of active screen
-  void crop_rectangle(const P&, const P&);
-  void crop_ellipse(const P&, const P&);
-  void crop_diamond(const P&, const P&);
-
-  void crop_rectangle();
-  void crop_ellipse();
-  void crop_diamond();
-
-  void crop_box(const P&, const P&);
-  void crop_box(); // (re)set crop box to bounding box
-
-  // Set label attributes
-  void font_size(const std::string& arg="nsz");
-  void font_face(const std::string& arg="rm");
-
-  void label_color(const Color&);
-
-  void label_angle(double t=0);
-  void label_mask(const Color& col);
-  void label_mask();
-
-  void label_pad(std::string);
-  void label_border(const Color&, double);
-  void label_border(const Color&, std::string);
-  void label_border(const Color&);
-
-  void label_border(double);
-  void label_border(std::string);
-  void no_label_border();
-
-  // Gray depth, path filling, [fill color]
-  void gray(double depth=0.3);
-  void fill(const Color&); // set fill color
-  void fill(bool arg=true); // set fill flag
-  void nofill();
-  // void fill_color(const std::string& arg);
-
-  // Arrowhead parameters
-  void arrow_width(double w=3);
-  void arrow_ratio(double r=5.5);
-  void arrow_inset(double arg=0);
-  void arrow_fill(bool arg=true);
-
-  // Dash pattern length
-  void dash_size(double len=0);
-  void dot_sep(double len=0);
-
-  // Dot and box marker size
-  void dot_size(double diam=0);
-
-  // Tick length
-  void tick_size(double len=0);
-
-  // Line style
-  void line_style(std::string style="-"); // solid by default
-
-  void solid();
-  void dashed();
-  void dotted();
-
-  // Line width
-  void pen(const std::string&);
-  void pen(double);
-
-  void bbold();
-  void  bold();
-  void plain();
-
-  // Line width and color
-  void bbold(const Color&);
-  void  bold(const Color&);
-  void plain(const Color&);
-
-  void pen(const Color&);
-  void pen(const Color&, double);
-  void pen(const Color&, std::string);
-
-  void base(const Color&);
-  void base(const Color&, double);
-  void base(const Color&, std::string);
-
-  // Line and text color
-  // ePiX provides rgb/cmyk colors via xcolor. The following are equivalent:
-  //    red();
-  //    rgb(1,0,0);
-  //
-  // cmyk(0,1,1,0); is visually equivalent but not the same.
-  //
-  // Densities outside the unit interval [0,1] are truncated, e.g., 
-  //    rgb(2, -1, 0.3) = rgb(1, 0, 0.3).
-
-  // red-green-blue
-  void rgb(double r, double g, double b); // must pass args by value
-  // cyan-magenta-yellow-black
-  void cmyk(double c, double m, double y, double k);
-
-  // P arguments, for easy function control
-  void rgb(const P&);
-  void cmyk(const P&);
-
-  // primary colors
-  void red(double d=1);
-  void green(double d=1);
-  void blue(double d=1);
-  void white(double d=1);
-  void black(double d=1);
-
-  void cyan(double d=1);
-  void magenta(double d=1);
-  void yellow(double d=1);
-
-} // end of namespace
-
-#endif /* EPIX_STATE */
diff --git a/graphics/epix/surface.cc b/graphics/epix/surface.cc
deleted file mode 100644
index 0da2210fb6..0000000000
--- a/graphics/epix/surface.cc
+++ /dev/null
@@ -1,1072 +0,0 @@
-/*
- * surface.cc -- Shaded surface plotting
- *
- * This file is part of ePiX, a C++ library for creating high-quality
- * figures in LaTeX
- *
- * Version 1.1.18
- * Last Change: September 14, 2007
- */
-
-/*
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include <cmath>
-
-#include "constants.h"
-#include "errors.h"
-
-#include "triples.h"
-#include "frame.h"
-
-#include "camera.h"
-#include "Color.h"
-
-#include "pen_data.h"
-#include "state.h"
-
-#include "domain.h"
-
-#include "facet.h"
-#include "surface.h"
-
-namespace ePiX {
-
-  typedef std::list<domain>::const_iterator dolci;
-
-  static double id(double x) { return x; }
-
-  scenery::scenery() : m_cull(0) { }
-
-  scenery::scenery(P F(double, double), const domain& R) : m_cull(0)
-  {
-    // construct sorted list of facet*s
-    if (R.dim() != 2)
-      {
-	epix_warning("scenery() requires a 2-dimensional domain");
-	return;
-      }
-    // else may assume dim(R)=2
-
-    // exactly one test of first three should succeed
-    if (fabs(R.corner2_x1() - R.corner1_x1()) <= EPIX_EPSILON)
-      {
-	const unsigned int N1(R.fine_n2()/R.coarse_n2());
-	const unsigned int N2(R.fine_n3()/R.coarse_n3());
-
-	const double du(R.dx2());
-	const double dv(R.dx3());
-
-	for (int i=0; i<R.coarse_n2(); ++i)
-	  for (int j=0; j<R.coarse_n3(); ++j)
-	    m_data.push_back(new facet(F, 
-				       R.corner1_x2() + i*R.step2(),
-				       R.corner1_x3() + j*R.step3(),
-				       du, dv, N1, N2));
-      }
-
-    // if dx2() == 0, use (u,v) = (x,z)
-    else if (fabs(R.corner2_x2() - R.corner1_x2()) <= EPIX_EPSILON)
-      {
-	const unsigned int N1(R.fine_n1()/R.coarse_n1());
-	const unsigned int N2(R.fine_n3()/R.coarse_n3());
-
-	const double du(R.dx1());
-	const double dv(R.dx3());
-
-	for (int i=0; i<R.coarse_n1(); ++i)
-	  for (int j=0; j<R.coarse_n3(); ++j)
-	    m_data.push_back(new facet(F,
-				       R.corner1_x1() + i*R.step1(),
-				       R.corner1_x3() + j*R.step3(),
-				       du, dv, N1, N2));
-      }
-
-    else if (fabs(R.corner2_x3() - R.corner1_x3()) <= EPIX_EPSILON)
-      {
-	const unsigned int N1(R.fine_n1()/R.coarse_n1());
-	const unsigned int N2(R.fine_n2()/R.coarse_n2());
-
-	const double du(R.dx1());
-	const double dv(R.dx2());
-
-	for (int i=0; i<R.coarse_n1(); ++i)
-	  for (int j=0; j<R.coarse_n2(); ++j)
-	    m_data.push_back(new facet(F,
-				       R.corner1_x1() + i*R.step1(),
-				       R.corner1_x2() + j*R.step2(),
-				       du, dv, N1, N2));
-      }
-
-    else
-      {
-	epix_warning("scenery() internal error!");
-	// clean up
-	for (std::list<facet*>::iterator p=m_data.begin();
-	     p!=m_data.end(); ++p)
-	  delete *p;
-
-	return;
-      }
-
-    m_data.sort(by_distance());
-    // sort(m_data.begin(), m_data.end(), by_distance());
-  } // end of scenery(P F(double, double), const domain& R)
-
-
-  scenery::scenery(P F(double, double, double), const domain& R) : m_cull(0)
-  {
-    if (R.dim() != 2)
-      {
-	epix_warning("scenery() requires a 2-dimensional domain");
-	return;
-      }
-    // else may assume dim(R)=2
-
-    // exactly one test of first three should succeed
-    if (fabs(R.corner2_x1() - R.corner1_x1()) <= EPIX_EPSILON)
-      {
-	const unsigned int N1(R.fine_n2()/R.coarse_n2());
-	const unsigned int N2(R.fine_n3()/R.coarse_n3());
-
-	const double du(R.dx2());
-	const double dv(R.dx3());
-
-	for (int i=0; i<R.coarse_n2(); ++i)
-	  for (int j=0; j<R.coarse_n3(); ++j)
-	    m_data.push_back(new facet(F, 
-				       R.corner1_x1(),
-				       R.corner1_x2() + i*R.step2(),
-				       R.corner1_x3() + j*R.step3(),
-				       0, du, dv, N1, N2));
-      }
-
-    // if dx2() == 0, use (u,v) = (x,z)
-    else if (fabs(R.corner2_x2() - R.corner1_x2()) <= EPIX_EPSILON)
-      {
-	const unsigned int N1(R.fine_n1()/R.coarse_n1());
-	const unsigned int N2(R.fine_n3()/R.coarse_n3());
-
-	const double du(R.dx1());
-	const double dv(R.dx3());
-
-	for (int i=0; i<R.coarse_n1(); ++i)
-	  for (int j=0; j<R.coarse_n3(); ++j)
-	    m_data.push_back(new facet(F,
-				       R.corner1_x1() + i*R.step1(),
-				       R.corner1_x2(),
-				       R.corner1_x3() + j*R.step3(),
-				       du, 0, dv, N1, N2));
-      }
-
-    else if (fabs(R.corner2_x3() - R.corner1_x3()) <= EPIX_EPSILON)
-      {
-	const unsigned int N1(R.fine_n1()/R.coarse_n1());
-	const unsigned int N2(R.fine_n2()/R.coarse_n2());
-
-	const double du(R.dx1());
-	const double dv(R.dx2());
-
-	for (int i=0; i<R.coarse_n1(); ++i)
-	  for (int j=0; j<R.coarse_n2(); ++j)
-	    m_data.push_back(new facet(F,
-				       R.corner1_x1() + i*R.step1(),
-				       R.corner1_x2() + j*R.step2(),
-				       R.corner1_x3(),
-				       du, dv, 0, N1, N2));
-      }
-
-    else
-      {
-	epix_warning("scenery() internal error!");
-	// clean up
-	for (std::list<facet*>::iterator p=m_data.begin();
-	     p!=m_data.end(); ++p)
-	  delete *p;
-
-	return;
-      }
-
-    m_data.sort(by_distance());
-    // sort(m_data.begin(), m_data.end(), by_distance());
-  } // end of scenery(P F(double, double, double), const domain& R)
-
-
-  //// Color-dependent constructors ////
-  // position-valued color
-  scenery::scenery(P F(double, double), const domain& R,
-		   P color(double, double, double)) : m_cull(0)
-  {
-    // construct sorted list of facet*s
-    if (R.dim() != 2)
-      {
-	epix_warning("scenery() requires a 2-dimensional domain");
-	return;
-      }
-    // else may assume dim(R)=2
-
-    // exactly one test of first three should succeed
-    if (fabs(R.corner2_x1() - R.corner1_x1()) <= EPIX_EPSILON)
-      {
-	const unsigned int N1(R.fine_n2()/R.coarse_n2());
-	const unsigned int N2(R.fine_n3()/R.coarse_n3());
-
-	const double du(R.dx2());
-	const double dv(R.dx3());
-
-	for (int i=0; i<R.coarse_n2(); ++i)
-	  for (int j=0; j<R.coarse_n3(); ++j)
-	    {
-	      // use mesh center to approximate facet's location
-	      P posn(F(R.corner1_x2() + (i+0.5)*R.step2(),
-		       R.corner1_x3() + (j+0.5)*R.step3()));
-
-	      P col(color(posn.x1(), posn.x2(), posn.x3()));
-
-	      m_data.push_back(new facet(F, 
-					 R.corner1_x2() + i*R.step2(),
-					 R.corner1_x3() + j*R.step3(),
-					 du, dv, N1, N2,
-					 RGB(col.x1(),col.x2(),col.x3())));
-	    }
-      }
-
-    // if dx2() == 0, use (u,v) = (x,z)
-    else if (fabs(R.corner2_x2() - R.corner1_x2()) <= EPIX_EPSILON)
-      {
-	const unsigned int N1(R.fine_n1()/R.coarse_n1());
-	const unsigned int N2(R.fine_n3()/R.coarse_n3());
-
-	const double du(R.dx1());
-	const double dv(R.dx3());
-
-	for (int i=0; i<R.coarse_n1(); ++i)
-	  for (int j=0; j<R.coarse_n3(); ++j)
-	    {
-	      // use mesh center to approximate facet's location
-	      P posn(F(R.corner1_x1() + (i+0.5)*R.step1(),
-		       R.corner1_x3() + (j+0.5)*R.step3()));
-
-	      P col(color(posn.x1(), posn.x2(), posn.x3()));
-
-	      m_data.push_back(new facet(F, 
-					 R.corner1_x1() + i*R.step1(),
-					 R.corner1_x3() + j*R.step3(),
-					 du, dv, N1, N2,
-					 RGB(col.x1(), col.x2(), col.x3())));
-	    }
-      }
-
-    else if (fabs(R.corner2_x3() - R.corner1_x3()) <= EPIX_EPSILON)
-      {
-	const unsigned int N1(R.fine_n1()/R.coarse_n1());
-	const unsigned int N2(R.fine_n2()/R.coarse_n2());
-
-	const double du(R.dx1());
-	const double dv(R.dx2());
-
-	for (int i=0; i<R.coarse_n1(); ++i)
-	  for (int j=0; j<R.coarse_n2(); ++j)
-	    {
-	      // use mesh center to approximate facet's location
-	      P posn(F(R.corner1_x1() + (i+0.5)*R.step1(),
-		       R.corner1_x2() + (j+0.5)*R.step2()));
-
-	      P col(color(posn.x1(), posn.x2(), posn.x3()));
-
-	      m_data.push_back(new facet(F, 
-					 R.corner1_x1() + i*R.step1(),
-					 R.corner1_x2() + j*R.step2(),
-					 du, dv, N1, N2,
-					 RGB(col.x1(), col.x2(), col.x3())));
-	    }
-      }
-
-    else
-      {
-	epix_warning("scenery() internal error!");
-	// clean up
-	for (std::list<facet*>::iterator p=m_data.begin();
-	     p!=m_data.end(); ++p)
-	  delete *p;
-
-	return;
-      }
-
-    m_data.sort(by_distance());
-    // sort(m_data.begin(), m_data.end(), by_distance());
-  } // end of scenery(P F(double, double), const domain& R)
-
-
-  scenery::scenery(P F(double, double, double), const domain& R,
-		   P color(double, double, double)) : m_cull(0)
-  {
-    if (R.dim() != 2)
-      {
-	epix_warning("scenery() requires a 2-dimensional domain");
-	return;
-      }
-    // else may assume dim(R)=2
-
-    // exactly one test of first three should succeed
-    if (fabs(R.corner2_x1() - R.corner1_x1()) <= EPIX_EPSILON)
-      {
-	const unsigned int N1(R.fine_n2()/R.coarse_n2());
-	const unsigned int N2(R.fine_n3()/R.coarse_n3());
-
-	const double du(R.dx2());
-	const double dv(R.dx3());
-
-	for (int i=0; i<R.coarse_n2(); ++i)
-	  for (int j=0; j<R.coarse_n3(); ++j)
-	    {
-	      // use mesh center to approximate facet's location
-	      P posn(F(R.corner1_x1(),
-		       R.corner1_x2() + (i+0.5)*R.step2(),
-		       R.corner1_x3() + (j+0.5)*R.step3()));
-
-	      P col(color(posn.x1(), posn.x2(), posn.x3()));
-
-	      m_data.push_back(new facet(F, 
-					 R.corner1_x1(),
-					 R.corner1_x2() + i*R.step2(),
-					 R.corner1_x3() + j*R.step3(),
-					 0, du, dv, N1, N2,
-					 RGB(col.x1(), col.x2(), col.x3())));
-	    }
-      }
-
-    // if dx2() == 0, use (u,v) = (x,z)
-    else if (fabs(R.corner2_x2() - R.corner1_x2()) <= EPIX_EPSILON)
-      {
-	const unsigned int N1(R.fine_n1()/R.coarse_n1());
-	const unsigned int N2(R.fine_n3()/R.coarse_n3());
-
-	const double du(R.dx1());
-	const double dv(R.dx3());
-
-	for (int i=0; i<R.coarse_n1(); ++i)
-	  for (int j=0; j<R.coarse_n3(); ++j)
-	    {
-	      P posn(F(R.corner1_x1() + (i+0.5)*R.step1(),
-		       R.corner1_x2(),
-		       R.corner1_x3() + (j+0.5)*R.step3()));
-
-	      P col(color(posn.x1(), posn.x2(), posn.x3()));
-
-	      m_data.push_back(new facet(F,
-					 R.corner1_x1() + i*R.step1(),
-					 R.corner1_x2(),
-					 R.corner1_x3() + j*R.step3(),
-					 du, 0, dv, N1, N2,
-					 RGB(col.x1(), col.x2(), col.x3())));
-	    }
-      }
-
-    else if (fabs(R.corner2_x3() - R.corner1_x3()) <= EPIX_EPSILON)
-      {
-	const unsigned int N1(R.fine_n1()/R.coarse_n1());
-	const unsigned int N2(R.fine_n2()/R.coarse_n2());
-
-	const double du(R.dx1());
-	const double dv(R.dx2());
-
-	for (int i=0; i<R.coarse_n1(); ++i)
-	  for (int j=0; j<R.coarse_n2(); ++j)
-	    {
-	      P posn(F(R.corner1_x1() + (i+0.5)*R.step1(),
-		       R.corner1_x2() + (j+0.5)*R.step2(),
-		       R.corner1_x3()));
-
-	      P col(color(posn.x1(), posn.x2(), posn.x3()));
-
-	      m_data.push_back(new facet(F,
-					 R.corner1_x1() + i*R.step1(),
-					 R.corner1_x2() + j*R.step2(),
-					 R.corner1_x3(),
-					 du, dv, 0, N1, N2,
-					 RGB(col.x1(), col.x2(), col.x3())));
-	    }
-      }
-
-    else
-      {
-	epix_warning("scenery() internal error!");
-	// clean up
-	for (std::list<facet*>::iterator p=m_data.begin();
-	     p!=m_data.end(); ++p)
-	  delete *p;
-
-	return;
-      }
-
-    m_data.sort(by_distance());
-    // sort(m_data.begin(), m_data.end(), by_distance());
-  } // end of scenery(P F(double, double, double), const domain& R)
-
-
-  //// domain-valued color ////
-  scenery::scenery(P F(double, double), const domain& R,
-		   P color(double, double)) : m_cull(0)
-  {
-    // construct sorted list of facet*s
-    if (R.dim() != 2)
-      {
-	epix_warning("scenery() requires a 2-dimensional domain");
-	return;
-      }
-    // else may assume dim(R)=2
-
-    // exactly one test of first three should succeed
-    if (fabs(R.corner2_x1() - R.corner1_x1()) <= EPIX_EPSILON)
-      {
-	const unsigned int N1(R.fine_n2()/R.coarse_n2());
-	const unsigned int N2(R.fine_n3()/R.coarse_n3());
-
-	const double du(R.dx2());
-	const double dv(R.dx3());
-
-	for (int i=0; i<R.coarse_n2(); ++i)
-	  for (int j=0; j<R.coarse_n3(); ++j)
-	    {
-	      P col(color(R.corner1_x2() + (i+0.5)*R.step2(),
-			  R.corner1_x3() + (j+0.5)*R.step3()));
-
-	      m_data.push_back(new facet(F, 
-					 R.corner1_x2() + i*R.step2(),
-					 R.corner1_x3() + j*R.step3(),
-					 du, dv, N1, N2,
-					 RGB(col.x1(),col.x2(),col.x3())));
-	    }
-      }
-
-    // if dx2() == 0, use (u,v) = (x,z)
-    else if (fabs(R.corner2_x2() - R.corner1_x2()) <= EPIX_EPSILON)
-      {
-	const unsigned int N1(R.fine_n1()/R.coarse_n1());
-	const unsigned int N2(R.fine_n3()/R.coarse_n3());
-
-	const double du(R.dx1());
-	const double dv(R.dx3());
-
-	for (int i=0; i<R.coarse_n1(); ++i)
-	  for (int j=0; j<R.coarse_n3(); ++j)
-	    {
-	      // use mesh center to approximate facet's location
-	      P col(color(R.corner1_x1() + (i+0.5)*R.step1(),
-			  R.corner1_x3() + (j+0.5)*R.step3()));
-
-	      m_data.push_back(new facet(F, 
-					 R.corner1_x1() + i*R.step1(),
-					 R.corner1_x3() + j*R.step3(),
-					 du, dv, N1, N2,
-					 RGB(col.x1(), col.x2(), col.x3())));
-	    }
-      }
-
-    else if (fabs(R.corner2_x3() - R.corner1_x3()) <= EPIX_EPSILON)
-      {
-	const unsigned int N1(R.fine_n1()/R.coarse_n1());
-	const unsigned int N2(R.fine_n2()/R.coarse_n2());
-
-	const double du(R.dx1());
-	const double dv(R.dx2());
-
-	for (int i=0; i<R.coarse_n1(); ++i)
-	  for (int j=0; j<R.coarse_n2(); ++j)
-	    {
-	      // use mesh center to approximate facet's location
-	      P col(color(R.corner1_x1() + (i+0.5)*R.step1(),
-			  R.corner1_x2() + (j+0.5)*R.step2()));
-
-	      m_data.push_back(new facet(F, 
-					 R.corner1_x1() + i*R.step1(),
-					 R.corner1_x2() + j*R.step2(),
-					 du, dv, N1, N2,
-					 RGB(col.x1(), col.x2(), col.x3())));
-	    }
-      }
-
-    else
-      {
-	epix_warning("scenery() internal error!");
-	// clean up
-	for (std::list<facet*>::iterator p=m_data.begin();
-	     p!=m_data.end(); ++p)
-	  delete *p;
-
-	return;
-      }
-
-    m_data.sort(by_distance());
-    // sort(m_data.begin(), m_data.end(), by_distance());
-  } // end of scenery(P F(double, double), const domain& R)
-
-
-  scenery::scenery(P F(double, double, double), const domain& R,
-		   P color(double, double)) : m_cull(0)
-  {
-    if (R.dim() != 2)
-      {
-	epix_warning("scenery() requires a 2-dimensional domain");
-	return;
-      }
-    // else may assume dim(R)=2
-
-    // exactly one test of first three should succeed
-    if (fabs(R.corner2_x1() - R.corner1_x1()) <= EPIX_EPSILON)
-      {
-	const unsigned int N1(R.fine_n2()/R.coarse_n2());
-	const unsigned int N2(R.fine_n3()/R.coarse_n3());
-
-	const double du(R.dx2());
-	const double dv(R.dx3());
-
-	for (int i=0; i<R.coarse_n2(); ++i)
-	  for (int j=0; j<R.coarse_n3(); ++j)
-	    {
-	      // Color indep of x1
-	      P col(color(R.corner1_x2() + (i+0.5)*R.step2(),
-			  R.corner1_x3() + (j+0.5)*R.step3()));
-
-	      m_data.push_back(new facet(F, 
-					 R.corner1_x1(),
-					 R.corner1_x2() + i*R.step2(),
-					 R.corner1_x3() + j*R.step3(),
-					 0, du, dv, N1, N2,
-					 RGB(col.x1(), col.x2(), col.x3())));
-	    }
-      }
-
-    // if dx2() == 0, use (u,v) = (x,z)
-    else if (fabs(R.corner2_x2() - R.corner1_x2()) <= EPIX_EPSILON)
-      {
-	const unsigned int N1(R.fine_n1()/R.coarse_n1());
-	const unsigned int N2(R.fine_n3()/R.coarse_n3());
-
-	const double du(R.dx1());
-	const double dv(R.dx3());
-
-	for (int i=0; i<R.coarse_n1(); ++i)
-	  for (int j=0; j<R.coarse_n3(); ++j)
-	    {
-	      P col(color(R.corner1_x1() + (i+0.5)*R.step1(),
-			  R.corner1_x3() + (j+0.5)*R.step3()));
-
-	      m_data.push_back(new facet(F,
-					 R.corner1_x1() + i*R.step1(),
-					 R.corner1_x2(),
-					 R.corner1_x3() + j*R.step3(),
-					 du, 0, dv, N1, N2,
-					 RGB(col.x1(), col.x2(), col.x3())));
-	    }
-      }
-
-    else if (fabs(R.corner2_x3() - R.corner1_x3()) <= EPIX_EPSILON)
-      {
-	const unsigned int N1(R.fine_n1()/R.coarse_n1());
-	const unsigned int N2(R.fine_n2()/R.coarse_n2());
-
-	const double du(R.dx1());
-	const double dv(R.dx2());
-
-	for (int i=0; i<R.coarse_n1(); ++i)
-	  for (int j=0; j<R.coarse_n2(); ++j)
-	    {
-	      P col(color(R.corner1_x1() + (i+0.5)*R.step1(),
-			  R.corner1_x2() + (j+0.5)*R.step2()));
-
-	      m_data.push_back(new facet(F,
-					 R.corner1_x1() + i*R.step1(),
-					 R.corner1_x2() + j*R.step2(),
-					 R.corner1_x3(),
-					 du, dv, 0, N1, N2,
-					 RGB(col.x1(), col.x2(), col.x3())));
-	    }
-      }
-
-    else
-      {
-	epix_warning("scenery() internal error!");
-	// clean up
-	for (std::list<facet*>::iterator p=m_data.begin();
-	     p!=m_data.end(); ++p)
-	  delete *p;
-
-	return;
-      }
-
-    m_data.sort(by_distance());
-    // sort(m_data.begin(), m_data.end(), by_distance());
-  } // end of scenery(P F(double, double, double), const domain& R)
-
-
-  scenery::scenery(const scenery& sc)
-    : m_cull(sc.m_cull)
-  {
-    for (std::list<facet*>::const_iterator p=sc.m_data.begin();
-	 p!=sc.m_data.end(); ++p)
-      m_data.push_back((*p)->clone());
-  }
-
-  scenery& scenery::operator= (const scenery& sc)
-  {
-    if (this != &sc)
-      {
-	std::list<facet*> tmp;
-	// get facets from sc
-	for (std::list<facet*>::const_iterator p=sc.m_data.begin();
-	     p!=sc.m_data.end(); ++p)
-	  tmp.push_back((*p)->clone());
-
-	// free memory
-	for (std::list<facet*>::iterator p=m_data.begin();
-	     p!=m_data.end(); ++p)
-	  delete *p;
-
-	swap(m_data, tmp);
-
-	m_cull=sc.m_cull;
-      }
-
-    return *this;
-  }
-
-  scenery::~scenery()
-  {
-    for (std::list<facet*>::iterator p=m_data.begin(); p!=m_data.end(); ++p)
-      delete *p;
-  }
-
-
-  scenery& scenery::add(P F(double, double), const domain& R)
-  {
-    scenery tmp(F, R);
-    (*this).m_data.merge(tmp.m_data, by_distance());
-
-    return *this;
-  }
-
-  scenery& scenery::add(P F(double, double, double), const domain& R)
-  {
-    scenery tmp(F, R);
-    (*this).m_data.merge(tmp.m_data, by_distance());
-
-    return *this;
-  }
-
-  scenery& scenery::add(P F(double, double), const domain_list& DL)
-  {
-    for (dolci p=DL.m_list.begin(); p!=DL.m_list.end(); ++p)
-      {
-	scenery tmp(F, *p);
-	(*this).m_data.merge(tmp.m_data, by_distance());
-      }	
-
-    return *this;
-  }
-
-  scenery& scenery::add(P F(double, double, double), const domain_list& DL)
-  {
-    for (dolci p=DL.m_list.begin(); p!=DL.m_list.end(); ++p)
-      {
-	scenery tmp(F, *p);
-	(*this).m_data.merge(tmp.m_data, by_distance());
-      }	
-
-    return *this;
-  }
-
-
-  //// Color-dependent versions ////
-  // position-dependent color
-  scenery& scenery::add(P F(double, double), const domain& R,
-			P color(double, double, double))
-  {
-    scenery tmp(F, R, color);
-    (*this).m_data.merge(tmp.m_data, by_distance());
-
-    return *this;
-  }
-
-  scenery& scenery::add(P F(double, double, double), const domain& R,
-			P color(double, double, double))
-  {
-    scenery tmp(F, R, color);
-    (*this).m_data.merge(tmp.m_data, by_distance());
-
-    return *this;
-  }
-
-  scenery& scenery::add(P F(double, double), const domain_list& DL,
-			P color(double, double, double))
-  {
-    for (dolci p=DL.m_list.begin(); p!=DL.m_list.end(); ++p)
-      {
-	scenery tmp(F, *p, color);
-	(*this).m_data.merge(tmp.m_data, by_distance());
-      }	
-
-    return *this;
-  }
-
-  scenery& scenery::add(P F(double, double, double), const domain_list& DL,
-			P color(double, double, double))
-  {
-    for (dolci p=DL.m_list.begin(); p!=DL.m_list.end(); ++p)
-      {
-	scenery tmp(F, *p, color);
-	(*this).m_data.merge(tmp.m_data, by_distance());
-      }	
-
-    return *this;
-  }
-
-
-  //domain-dependent color
-  scenery& scenery::add(P F(double, double), const domain& R,
-			P color(double, double))
-  {
-    scenery tmp(F, R, color);
-    (*this).m_data.merge(tmp.m_data, by_distance());
-
-    return *this;
-  }
-
-  scenery& scenery::add(P F(double, double, double), const domain& R,
-			P color(double, double))
-  {
-    scenery tmp(F, R, color);
-    (*this).m_data.merge(tmp.m_data, by_distance());
-
-    return *this;
-  }
-
-  scenery& scenery::add(P F(double, double), const domain_list& DL,
-			P color(double, double))
-  {
-    for (dolci p=DL.m_list.begin(); p!=DL.m_list.end(); ++p)
-      {
-	scenery tmp(F, *p, color);
-	(*this).m_data.merge(tmp.m_data, by_distance());
-      }	
-
-    return *this;
-  }
-
-  scenery& scenery::add(P F(double, double, double), const domain_list& DL,
-			P color(double, double))
-  {
-    for (dolci p=DL.m_list.begin(); p!=DL.m_list.end(); ++p)
-      {
-	scenery tmp(F, *p, color);
-	(*this).m_data.merge(tmp.m_data, by_distance());
-      }	
-
-    return *this;
-  }
-
-
-  scenery& scenery::cull(int c)
-  {
-    if (c == 0)
-      m_cull=0;
-    else if (c > 0)
-      m_cull=1;
-    else
-      m_cull=-1;
-    return *this;
-  }
-
-  void scenery::draw(int cull) const
-  {
-    for (std::list<facet*>::const_iterator p=m_data.begin();
-	 p!=m_data.end(); ++p)
-      (*p)->draw(cull);
-  }
-
-
-  //// User-accessible functions ////
-  void surface(P F(double, double), const domain& R, int cull)
-  {
-    scenery surf(F, R);
-    surf.draw(cull);
-  }
-
-
-  // for slices of maps R^3 -> R^3
-  void surface(P F(double, double, double), const domain& R, int cull)
-  {
-    scenery surf(F, R);
-    surf.draw(cull);
-  }
-
-  void surface(P F(double, double, double), const domain_list& R, int cull)
-  {
-    scenery tmp;
-
-    for (dolci p= R.m_list.begin(); p!=R.m_list.end(); ++p)
-      tmp.add(F, *p);
-
-    tmp.draw(cull);
-  }
-
-
-  void surface_rev(double f(double), double g(double), 
-		   double min_x, double max_x, int i_max, int j_max, int cull)
-  {
-    surface_rev(f, g,
-		domain(P(min_x, 0), P(max_x, full_turn()),
-		       mesh(i_max, j_max), mesh(i_max, j_max)), frame(), cull);
-  }
-
-  void surface_rev(double f(double),
-		   double min_x, double max_x, int i_max, int j_max, int cull)
-  {
-    surface_rev(id, f,
-		domain(P(min_x, 0), P(max_x, full_turn()),
-		       mesh(i_max, j_max), mesh(i_max, j_max)), frame(), cull);
-  }
-
-  void surface_rev(double f(double), double g(double), 
-		   const domain& R, const frame& coords, int cull)
-  {
-    if (R.dx3() > 0)
-      epix_warning("surface_rev() ignores domain's third coordinate");
-
-    std::list<facet*> mesh;
-
-    const unsigned int N1(R.fine_n1()/R.coarse_n1());
-    const unsigned int N2(R.fine_n2()/R.coarse_n2());
-    const double du(R.dx1());
-    const double dv(R.dx2());
-
-    for (int i=0; i<R.coarse_n1(); ++i)
-      for (int j=0; j<R.coarse_n2(); ++j)
-	mesh.push_back(new facet(f, g,
-				 R.corner1_x1() + i*R.step1(),
-				 R.corner1_x2() + j*R.step2(),
-				 du, dv, N1, N2, coords));
-
-    mesh.sort(by_distance());
-    // sort(mesh.begin(), mesh.end(), by_distance());
-
-    for (std::list<facet*>::iterator p=mesh.begin(); p!=mesh.end(); ++p)
-      {
-	(*p)->draw(cull);
-	delete *p;
-      }
-  }
-
-  //// Color-dependent versions ////
-  // location-dependent color
-  void surface(P F(double, double), const domain& R,
-	       P color(double, double, double), int cull)
-  {
-    scenery surf(F, R, color);
-    surf.draw(cull);
-  }
-
-
-  // for slices of maps R^3 -> R^3
-  void surface(P F(double, double, double), const domain& R,
-	       P color(double, double, double), int cull)
-  {
-    scenery surf(F, R, color);
-    surf.draw(cull);
-  }
-
-  void surface(P F(double, double, double), const domain_list& R,
-	       P color(double, double, double), int cull)
-  {
-    scenery tmp;
-
-    for (dolci p= R.m_list.begin(); p!=R.m_list.end(); ++p)
-      tmp.add(F, *p, color);
-
-    tmp.draw(cull);
-  }
-
-
-  void surface_rev(double f(double), double g(double), 
-		   double min_x, double max_x, int i_max, int j_max,
-		   P color(double, double, double), int cull)
-  {
-    surface_rev(f, g,
-		domain(P(min_x, 0), P(max_x, full_turn()),
-		       mesh(i_max, j_max), mesh(i_max, j_max)), color,
-		frame(), cull);
-  }
-
-  void surface_rev(double f(double),
-		   double min_x, double max_x, int i_max, int j_max,
-		   P color(double, double, double), int cull)
-  {
-    surface_rev(id, f,
-		domain(P(min_x, 0), P(max_x, full_turn()),
-		       mesh(i_max, j_max), mesh(i_max, j_max)), color,
-		frame(), cull);
-  }
-
-  void surface_rev(double f(double), double g(double), 
-		   const domain& R, P color(double, double, double),
-		   const frame& coords, int cull)
-  {
-    if (R.dx3() > 0)
-      epix_warning("surface_rev() ignores domain's third coordinate");
-
-    std::list<facet*> mesh;
-
-    const unsigned int N1(R.fine_n1()/R.coarse_n1());
-    const unsigned int N2(R.fine_n2()/R.coarse_n2());
-    const double du(R.dx1());
-    const double dv(R.dx2());
-
-    const double u0(R.corner1_x1());
-    const double v0(R.corner1_x2());
-    const double DU(R.step1());
-    const double DV(R.step2());
-
-    for (int i=0; i<R.coarse_n1(); ++i)
-      for (int j=0; j<R.coarse_n2(); ++j)
-	{
-	  // mesh center approximates facet's location
-	  P posn(f(u0 + (i+0.5)*DU)*coords.sea() +
-		 g(u0 + (i+0.5)*DU)*Cos(v0 + (j+0.5)*DV)*coords.sky() +
-		 g(u0 + (i+0.5)*DU)*Sin(v0 + (j+0.5)*DV)*coords.eye());
-
-	  P col(color(posn.x1(), posn.x2(), posn.x3()));
-
-	  mesh.push_back(new facet(f, g,
-				   R.corner1_x1() + i*R.step1(),
-				   R.corner1_x2() + j*R.step2(),
-				   du, dv, N1, N2, 
-				   RGB(col.x1(), col.x2(), col.x3()), coords));
-	}
-
-    mesh.sort(by_distance());
-    // sort(mesh.begin(), mesh.end(), by_distance());
-
-    for (std::list<facet*>::iterator p=mesh.begin(); p!=mesh.end(); ++p)
-      {
-	(*p)->draw(cull);
-	delete *p;
-      }
-  }
-
-  // domain-dependent color
-  void surface(P F(double, double), const domain& R,
-	       P color(double, double), int cull)
-  {
-    scenery surf(F, R, color);
-    surf.draw(cull);
-  }
-
-
-  // for slices of maps R^3 -> R^3
-  void surface(P F(double, double, double), const domain& R,
-	       P color(double, double), int cull)
-  {
-    scenery surf(F, R, color);
-    surf.draw(cull);
-  }
-
-  void surface(P F(double, double, double), const domain_list& R,
-	       P color(double, double), int cull)
-  {
-    scenery tmp;
-
-    for (dolci p= R.m_list.begin(); p!=R.m_list.end(); ++p)
-      tmp.add(F, *p, color);
-
-    tmp.draw(cull);
-  }
-
-
-  void surface_rev(double f(double), double g(double), 
-		   double min_x, double max_x, int i_max, int j_max,
-		   P color(double, double), int cull)
-  {
-    surface_rev(f, g,
-		domain(P(min_x, 0), P(max_x, full_turn()),
-		       mesh(i_max, j_max), mesh(i_max, j_max)), color,
-		frame(), cull);
-  }
-
-  void surface_rev(double f(double),
-		   double min_x, double max_x, int i_max, int j_max,
-		   P color(double, double), int cull)
-  {
-    surface_rev(id, f,
-		domain(P(min_x, 0), P(max_x, full_turn()),
-		       mesh(i_max, j_max), mesh(i_max, j_max)), color,
-		frame(), cull);
-  }
-
-  void surface_rev(double f(double), double g(double), 
-		   const domain& R, P color(double, double),
-		   const frame& coords, int cull)
-  {
-    if (R.dx3() > 0)
-      epix_warning("surface_rev() ignores domain's third coordinate");
-
-    std::list<facet*> mesh;
-
-    const unsigned int N1(R.fine_n1()/R.coarse_n1());
-    const unsigned int N2(R.fine_n2()/R.coarse_n2());
-    const double du(R.dx1());
-    const double dv(R.dx2());
-
-    const double u0(R.corner1_x1());
-    const double v0(R.corner1_x2());
-    const double DU(R.step1());
-    const double DV(R.step2());
-
-    for (int i=0; i<R.coarse_n1(); ++i)
-      for (int j=0; j<R.coarse_n2(); ++j)
-	{
-	  // mesh center approximates facet's location
-	  P posn(f(u0 + (i+0.5)*DU)*coords.sea() +
-		 g(u0 + (i+0.5)*DU)*Cos(v0 + (j+0.5)*DV)*coords.sky() +
-		 g(u0 + (i+0.5)*DU)*Sin(v0 + (j+0.5)*DV)*coords.eye());
-
-	  P col(color(u0 + (i+0.5)*DU, v0 + (j+0.5)*DV));
-
-	  mesh.push_back(new facet(f, g,
-				   R.corner1_x1() + i*R.step1(),
-				   R.corner1_x2() + j*R.step2(),
-				   du, dv, N1, N2, 
-				   RGB(col.x1(), col.x2(), col.x3()), coords));
-	}
-
-    mesh.sort(by_distance());
-    // sort(mesh.begin(), mesh.end(), by_distance());
-
-    for (std::list<facet*>::iterator p=mesh.begin(); p!=mesh.end(); ++p)
-      {
-	(*p)->draw(cull);
-	delete *p;
-      }
-  }
-} // end of namespace
diff --git a/graphics/epix/surface.h b/graphics/epix/surface.h
deleted file mode 100644
index 9c5be67a0c..0000000000
--- a/graphics/epix/surface.h
+++ /dev/null
@@ -1,194 +0,0 @@
-/*
- * surface.h -- Shaded surface plotting
- *
- * This file is part of ePiX, a C++ library for creating high-quality
- * figures in LaTeX
- *
- * Version 1.1.7
- * Last Change: July 08, 2007
- */
-
-/*
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#include <list>
-
-#include "triples.h"
-#include "frame.h"
-
-#include "path.h"
-
-namespace ePiX 
-{
-  class domain;
-  class domain_list;
-  class facet;
-
-  // manipulable collection of surface-like objects
-  class scenery {
-  public:
-    scenery();
-    scenery(P F(double, double), const domain& R);
-    scenery(P F(double, double, double), const domain& R);
-
-    // third arg is RGB-valued function of position
-    scenery(P F(double, double), const domain& R,
-	    P color(double, double, double));
-
-    scenery(P F(double, double, double), const domain& R,
-	    P color(double, double, double));
-
-    // third arg is RGB-valued function of domain location
-    scenery(P F(double, double), const domain& R,
-	    P color(double, double));
-
-    scenery(P F(double, double, double), const domain& R,
-	    P color(double, double));
-
-    scenery(const scenery&);
-    scenery& operator= (const scenery&);
-    ~scenery();
-
-    scenery& add(P F(double, double), const domain& R);
-    scenery& add(P F(double, double, double), const domain& R);
-
-    scenery& add(P F(double, double), const domain_list&);
-    scenery& add(P F(double, double, double), const domain_list&);
-
-    // color-dependent
-    // location-colored
-    scenery& add(P F(double, double), const domain& R,
-		 P color(double, double, double));
-    scenery& add(P F(double, double, double), const domain& R,
-		 P color(double, double, double));
-
-    scenery& add(P F(double, double), const domain_list&,
-		 P color(double, double, double));
-    scenery& add(P F(double, double, double), const domain_list&,
-		 P color(double, double, double));
-
-    // domain-colored
-    scenery& add(P F(double, double), const domain& R,
-		 P color(double, double));
-    scenery& add(P F(double, double, double), const domain& R,
-		 P color(double, double));
-
-    scenery& add(P F(double, double), const domain_list&,
-		 P color(double, double));
-    scenery& add(P F(double, double, double), const domain_list&,
-		 P color(double, double));
-
-    // remove backward-pointing faces? 0=no, -1=front, 1=back
-    scenery& cull(int);
-    void draw(int cull=0) const;
-
-  private:
-    int m_cull;
-
-    std::list<facet*> m_data;
-  }; // end of class scenery
-
-
-  //// global functions ////
-  // except as noted, dim(R) must be 2
-  // cosine-shaded surface with fake z-buffered hidden object removal
-  void surface(P F(double, double), const domain& R, int cull=0);
-
-  // for slices of maps R^3 -> R^3
-  void surface(P F(double, double, double), const domain& R, int cull=0);
-
-  // plot multiple slices
-  void surface(P F(double, double, double), const domain_list& R, int cull=0);
-
-  // Surface from revolving the curve (f(t),g(t)) about the x-axis...
-  void surface_rev(double f(double), double g(double),
-		   double t_min, double t_max, 
-		   int latitudes, int longitudes=24, int cull=0);
-
-  void surface_rev(double f(double),
-		   double t_min, double t_max, 
-		   int latitudes, int longitudes=24, int cull=0);
-
-  // or about the specified axis, with specified angle range
-  void surface_rev(double f(double), double g(double), 
-		   const domain& R, const frame& coords=frame(), int cull=0);
-
-
-
-  //// location-colored versions ////
-  void surface(P F(double, double), const domain& R,
-	       P color(double, double, double), int cull=0);
-
-  // for slices of maps R^3 -> R^3
-  void surface(P F(double, double, double), const domain& R,
-	       P color(double, double, double), int cull=0);
-
-  // plot multiple slices
-  void surface(P F(double, double, double), const domain_list& R,
-	       P color(double, double, double), int cull=0);
-
-  // Surface from revolving the curve (f(t),g(t)) about the x-axis...
-  void surface_rev(double f(double), double g(double),
-		   double t_min, double t_max, 
-		   int latitudes, int longitudes,
-		   P color(double, double, double), int cull=0);
-
-  void surface_rev(double f(double),
-		   double t_min, double t_max, 
-		   int latitudes, int longitudes,
-		   P color(double, double, double), int cull=0);
-
-  // or about the specified axis, with specified angle range
-  void surface_rev(double f(double), double g(double), 
-		   const domain& R, P color(double, double, double),
-		   const frame& coords=frame(), int cull=0);
-
-
-  //// domain-colored versions ////
-  void surface(P F(double, double), const domain& R,
-	       P color(double, double), int cull=0);
-
-  // for slices of maps R^3 -> R^3
-  void surface(P F(double, double, double), const domain& R,
-	       P color(double, double), int cull=0);
-
-  // plot multiple slices
-  void surface(P F(double, double), const domain_list& R,
-	       P color(double, double, double), int cull=0);
-
-  // Surface from revolving the curve (f(t),g(t)) about the x-axis...
-  void surface_rev(double f(double), double g(double),
-		   double t_min, double t_max, 
-		   int latitudes, int longitudes,
-		   P color(double, double), int cull=0);
-
-  void surface_rev(double f(double),
-		   double t_min, double t_max, 
-		   int latitudes, int longitudes,
-		   P color(double, double), int cull=0);
-
-  // or about the specified axis, with specified angle range
-  void surface_rev(double f(double), double g(double), 
-		   const domain& R, P color(double, double),
-		   const frame& coords=frame(), int cull=0);
-} // end of namespace ePiX
diff --git a/graphics/epix/tikz.cc b/graphics/epix/tikz.cc
deleted file mode 100644
index b28a4832e4..0000000000
--- a/graphics/epix/tikz.cc
+++ /dev/null
@@ -1,312 +0,0 @@
-/*
- * tikz.cc -- ePiX::tikz output format
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.15
- * Last Change: September 07, 2007
- *
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- *
- *
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include <list>
-
-#include <string>
-#include <sstream>
-
-#include <set>
-
-#include "constants.h"
-
-#include "utils.h"
-
-#include "pairs.h"
-#include "edge_data.h"
-
-#include "Color.h"
-
-#include "path_style.h"
-#include "pen_data.h"
-
-// need to get units from the_picture
-#include "picture_data.h"
-#include "picture.h"
-
-#include "format.h"
-#include "tikz.h"
-
-namespace ePiX {
-
-  tikz::tikz()
-    : m_fill(Neutral()), m_stroke(Black()), m_lwidth(PLAIN_WIDTH),
-      m_units(the_picture().the_unitlength.units()) { }
-
-
-  tikz* tikz::clone() const
-  {
-    return new tikz(*this);
-  }
-
-  // Filled region with specified Cartesian edges, offset, and color
-  std::string tikz::print_fill(const std::list<edge2d>& edges,
-			       const pair& offset,
-			       const Color& fc,
-			       const pen_data& line,
-			       const std::string& len) const
-  {
-    std::stringstream obuf;
-    obuf << set_fill_state(fc) << set_pen_state(line);
-
-    // compute attribute string
-    std::stringstream attribs;
-
-    if ( !(fc.is_unset()) )
-      {
-	attribs << "[fill";
-
-	if (fc.alpha() < 1)
-	  attribs << ",opacity=" << fc.alpha();
-
-	attribs << "]";
-      }
-
-    obuf << print_paths(edges, offset, attribs.str(), len);
-
-    return obuf.str();
-  }
-
-  // Unfilled region, specified Cartesian edges
-  std::string tikz::print_line(const std::list<edge2d>& edges,
-			       const pair& offset,
-			       const pen_data& line,
-			       const pen_data& base,
-			       const path_state& style,
-			       const std::string& len) const
-  {
-    std::string value;
-
-    // draw *solid* base first
-    if (line.width() < base.width() && !base.color().is_unset())
-      {
-	std::stringstream battr;
-	battr << "[color=" << format::print(base.color()) << ","
-	      << "line width=" << format::print(base.width()) << "]";
-
-	value += format::print_line(edges, offset, base, path_state(),
-				    battr.str(), len);
-      }
-
-    value += set_pen_state(line);
-
-    return value += format::print_line(edges, offset, line, style, "", len);
-  }
-
-  // Print color declaration strings: model, name, densities
-  std::string tikz::print_color(const std::string& model,
-				const std::string& name,
-				double d1, double d2,
-				double d3) const
-  {
-    return format::xdefinecolor(model, name, d1, d2, d3);
-  }
-
-  std::string tikz::print_color(const std::string& model,
-				const std::string& name,
-				double d1, double d2,
-				double d3, double d4) const
-  {
-    return format::xdefinecolor(model, name, d1, d2, d3, d4);
-  }
-
-
-  // One-line comment
-  std::string tikz::print_comment(const std::string& msg) const
-  {
-    std::stringstream obuf;
-    obuf << "%% " << msg << std::endl;
-
-    return obuf.str();
-  }
-
-  // verbatim string, newline protected
-  std::string tikz::print_verbatim(const std::string& msg) const
-  {
-    std::stringstream obuf;
-    obuf << msg << "%" << std::endl;
-
-    return obuf.str();
-  }
-
-
-  // start/end a picture-like environment, set unit length
-  std::string tikz::start_picture(const pair& sz, const pair& offset) const
-  {
-    std::stringstream obuf;
-    obuf << "\\begin{tikzpicture}" << std::endl
-	 << "\\pgfsetlinewidth{" << format::print(PLAIN_WIDTH) << "}"
-	 << std::endl
-	 << "\\useasboundingbox " << print(offset)
-	 << " rectangle " << print(sz + offset) << ";"
-	 << std::endl;
-
-    return obuf.str();
-  }
-
-  std::string tikz::end_picture() const
-  {
-    std::stringstream obuf;
-    obuf << "\\end{tikzpicture}" << std::endl;
-
-    return obuf.str();
-  }
-
-  // Actual work done in start_picture
-  std::string tikz::set_unitlength(const std::string& len) const
-  {
-    return "";
-    /*
-    std::stringstream obuf;
-
-    obuf << "\\setlength{\\unitlength}{1" << len << "}%" << std::endl;
-
-    return obuf.str();
-    */
-  }
-
-
-  void tikz::reset_state() const
-  {
-    m_fill = Neutral();
-    m_stroke = Black();
-    m_lwidth = PLAIN_WIDTH;
-  }
-
-  //// private member functions ////
-  std::string tikz::path_connector() const
-  {
-    return "--";
-  }
-
-
-  std::string tikz::usepackages() const
-  {
-    return "usepackages tikz";
-  }
-
-  // string argument for passing attributes local to this path/loop
-  std::string tikz::start_open_path(const std::string& attribs) const
-  {
-    return "\\draw " + attribs;
-  }
-
-  std::string tikz::end_open_path(const std::string&) const
-  {
-    std::stringstream obuf;
-    obuf << ";" << std::endl;
-
-    return obuf.str();
-  }
-
-  std::string tikz::start_closed_path(const std::string& attribs) const
-  {
-    return "\\draw " + attribs;
-  }
-
-  std::string tikz::end_closed_path(const std::string&) const
-  {
-    std::stringstream obuf;
-    obuf <<  "--cycle;" << std::endl;
-
-    return obuf.str();
-  }
-
-  // print declarations to set state of output format
-  std::string tikz::set_fill_state(const Color& col) const
-  {
-    std::stringstream buf;
-    if (col != m_fill && !col.is_unset())
-      buf << "\\pgfsetfillcolor{" << format::print(col) << "}" << std::endl;
-
-    m_fill = col;
-    return buf.str();
-  }
-
-  std::string tikz::set_pen_state(const pen_data& pen) const
-  {
-    std::stringstream buf;
-    if (pen.color() != m_stroke)
-      {
-	buf << "\\pgfsetstrokecolor{" << format::print(pen.color()) << "}"
-	    << std::endl;
-
-	m_stroke = pen.color();
-      }
-
-    if (pen.width() != m_lwidth)
-      {
-	buf << "\\pgfsetlinewidth{" << format::print(pen.width()) << "}"
-	    << std::endl;
-
-	m_lwidth = pen.width();
-      }
-
-    return buf.str();
-  }
-
-  // place a LaTeX box of width zero (containing string) at location (pair)
-  std::string tikz::put_box(const pair& loc, const std::string& msg) const
-  {
-    std::stringstream obuf;
-
-    obuf << "\\pgftext[at={\\pgfpoint{"
-	 << truncate(loc.x1()) << m_units << "}{"
-	 << truncate(loc.x2()) << m_units
-	 << "}}] {" << msg << "}" << std::endl;
-
-    return obuf.str();
-  }
-
-  std::string tikz::print_circle_marker(const pair& here, double diam,
-					bool fill, const Color& color,
-					const std::string& len) const
-  {
-    std::stringstream obuf;
-    obuf << "\\";
-
-    if (fill)
-      obuf << "fill";
-
-    obuf << "draw[color=" << format::print(color) << "] "
-	 << print(here) << " circle(" << 0.5*diam << len << ");" << std::endl;
-
-    return obuf.str();
-  }
-
-  std::string tikz::print(const pair& arg) const
-  {
-    std::stringstream o;
-    o << "(" << truncate(arg.x1()) << m_units
-      << "," << truncate(arg.x2()) << m_units << ")";
-    return o.str();
-  }
-} // end of namespace
diff --git a/graphics/epix/tikz.h b/graphics/epix/tikz.h
deleted file mode 100644
index e437edb122..0000000000
--- a/graphics/epix/tikz.h
+++ /dev/null
@@ -1,152 +0,0 @@
-/*
- * tikz.h -- ePiX::tikz output format
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.15
- * Last Change: September 07, 2007
- *
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- *
- *
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#ifndef EPIX_TIKZ
-#define EPIX_TIKZ
-
-#include <set>
-#include <list>
-#include <string>
-
-#include "edge_data.h"
-
-namespace ePiX {
-
-  class Color;
-  class pair;
-  class path_state;
-  class pen_data;
-
-  class tikz : public format {
-  public:
-    tikz();
-
-    // Return a copy of this
-    tikz* clone() const;
-
-    // Filled region with specified Cartesian edges, offset, and color
-    std::string print_fill(const std::list<edge2d>& edges,
-			   const pair& offset,
-			   const Color& fill,
-			   const pen_data& line,
-			   const std::string& len) const;
-
-    // Unfilled region, specified Cartesian edges. Should generally be
-    // trivially implemented using one-pen function (supplied).
-    std::string print_line(const std::list<edge2d>& edges,
-			   const pair& offset,
-			   const pen_data& line_pen,
-			   const pen_data& base_pen,
-			   const path_state& style,
-			   const std::string& len) const;
-
-    /*
-     * Picture start and finish:
-     * Size and offset in page units,
-     * pallet (set of colors contained in the screen),
-     * unitlength
-     *
-     * These functions have default implementations, see format.cc.
-     * If the new format can use the default implementation, these
-     * functions declarations should be removed.
-     *
-    std::string pic_header(const pair& sizes,
-			   const pair& offsets,
-			   const std::set<Color>& pallet,
-			   const std::string& len) const;
-
-    std::string pic_footer() const;
-    */
-
-    // Print color declaration strings: model, name, densities
-    std::string print_color(const std::string&,
-			    const std::string&,
-			    double,
-			    double,
-			    double) const;
-
-    std::string print_color(const std::string&,
-			    const std::string&,
-			    double,
-			    double,
-			    double,
-			    double) const;
-
-    // One-line comment
-    std::string print_comment(const std::string&) const;
-
-    // Verbatim output
-    std::string print_verbatim(const std::string&) const;
-
-
-    // begin and end a picture-like environment, set the unit length
-    std::string start_picture(const pair&, const pair&) const;
-    std::string end_picture() const;
-
-    std::string set_unitlength(const std::string& len) const;
-
-    // State data, if any, must be mutable
-    void reset_state() const;
-
-  private:
-    mutable Color m_fill;
-    mutable Color m_stroke;
-    mutable length m_lwidth;
-
-    std::string m_units;
-
-    // override: inserted between path points
-    std::string path_connector() const;
-
-    std::string usepackages() const;
-
-    // string argument for passing attributes local to this path/loop
-    std::string start_open_path(const std::string&) const;
-    std::string end_open_path(const std::string&) const;
-
-    std::string start_closed_path(const std::string&) const;
-    std::string end_closed_path(const std::string&) const;
-
-    // print declarations to set state of output format
-    std::string set_fill_state(const Color&) const;
-    std::string set_pen_state(const pen_data&) const;
-
-    // place a LaTeX box of width zero (containing string) at location (pair)
-    std::string put_box(const pair&, const std::string&) const;
-
-    std::string print_circle_marker(const pair& here, double diam,
-				    bool fill, const Color& color,
-				    const std::string& len) const;
-
-    std::string print(const pair&) const; // override base class, print units
-  }; // end of class tikz
-} // end of namespace
-
-#endif /* EPIX_TIKZ */
diff --git a/graphics/epix/tile.cc b/graphics/epix/tile.cc
deleted file mode 100644
index a7717a818c..0000000000
--- a/graphics/epix/tile.cc
+++ /dev/null
@@ -1,38 +0,0 @@
-/* 
- * tile.cc -- ePiX::tile destructor
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.0.23
- * Last Change: January 14, 2007
- *
- * 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- *
- *
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include "tile.h"
-
-namespace ePiX {
-  tile::~tile() { }
-
-} // end of namespace
diff --git a/graphics/epix/tile.h b/graphics/epix/tile.h
deleted file mode 100644
index da4639e694..0000000000
--- a/graphics/epix/tile.h
+++ /dev/null
@@ -1,62 +0,0 @@
-/* 
- * tile.h -- ePiX::screen object base class (tile)
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.0.23
- * Last Change: January 14, 2007
- *
- * 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- *
- *
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#ifndef EPIX_TILE
-#define EPIX_TILE
-
-#include <string>
-
-namespace ePiX {
-
-  class format;
-  class length;
-  class affine;
-  class screen;
-  class screen_mask;
-
-  class tile {
-  public:
-    virtual ~tile();
-
-    virtual tile* clone() const = 0;
-    virtual tile& map_by(const affine&) = 0;
-    virtual tile& crop_to(const screen_mask&) = 0;
-
-    virtual bool is_empty() const = 0;
-
-    // pass length for (e.g.) dash length, marker size
-    virtual std::string print_to(const format&, const std::string&) const = 0;
-    virtual void add_to_pallet() const = 0;
-  }; // end of class tile
-
-} // end of namespace
-
-#endif /* EPIX_TILE */
diff --git a/graphics/epix/triples.cc b/graphics/epix/triples.cc
deleted file mode 100644
index f62076d4f7..0000000000
--- a/graphics/epix/triples.cc
+++ /dev/null
@@ -1,211 +0,0 @@
-/* 
- * triples.cc -- ePiX::P class
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.9
- * Last Change: August 01, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include <cmath>
-
-#include "constants.h"
-#include "errors.h"
-#include "triples.h"
-
-namespace ePiX {
-
-  P::P(double arg1, double arg2, double arg3)
-    : m_x1(arg1), m_x2(arg2), m_x3(arg3) { }
-
-  double P::x1() const
-  {
-    return m_x1;
-  }
-
-  double P::x2() const
-  {
-    return m_x2;
-  }
-
-  double P::x3() const
-  {
-    return m_x3;
-  }
-
-  bool P::is_valid() const
-  {
-    using std::isnan;
-    using std::isinf;
-
-    return
-         !isinf(m_x3) && !isnan(m_x3)
-      && !isinf(m_x2) && !isnan(m_x2)
-      && !isinf(m_x1) && !isnan(m_x1)
-      && m_x1*m_x1 + m_x2*m_x2 + m_x3*m_x3 < EPIX_INFTY;
-  }
-
-  // increment operators
-  P& P::operator += (const P& arg)
-  {
-    m_x1 += arg.m_x1;
-    m_x2 += arg.m_x2;
-    m_x3 += arg.m_x3;
-
-    return *this;
-  }
-
-  P& P::operator -= (const P& arg)
-  {
-    m_x1 -= arg.m_x1;
-    m_x2 -= arg.m_x2;
-    m_x3 -= arg.m_x3;  
-
-    return *this;
-  }
-
-  // scalar multipication
-  P& P::operator *= (double c)
-  {
-    m_x1 *= c;
-    m_x2 *= c;
-    m_x3 *= c;
-
-    return *this;
-  }
-
-  // cross product
-  P& P::operator *= (const P& v)
-  {
-    P temp(*this);
-	  
-    m_x1 = (temp.m_x2 * v.m_x3 - temp.m_x3 * v.m_x2);
-    m_x2 = (temp.m_x3 * v.m_x1 - temp.m_x1 * v.m_x3);
-    m_x3 = (temp.m_x1 * v.m_x2 - temp.m_x2 * v.m_x1);
-
-    return *this;
-  }
-
-  // componentwise product
-  P& P::operator &= (const P& v)
-  {
-    m_x1 *= v.m_x1;
-    m_x2 *= v.m_x2;
-    m_x3 *= v.m_x3;
-
-    return *this;
-  }
-
-  // orthogonalization: u %= v is the vector of the form u-k*v perp to v
-  P& P::operator%= (const P& v)
-  { 
-    double denom(v.m_x1*v.m_x1 + v.m_x2*v.m_x2 + v.m_x3*v.m_x3);
-    if (denom < EPIX_EPSILON)
-      {
-	epix_warning("Orthogonalizing by zero vector, no action");
-	return *this;
-      }
-
-    // else c=(u|v)/(v|v)
-    double c((m_x1*v.m_x1 + m_x2*v.m_x2 + m_x3*v.m_x3)/denom);
-
-    m_x1 -= c*v.m_x1;
-    m_x2 -= c*v.m_x2;
-    m_x3 -= c*v.m_x3;
-
-    return *this;
-  }
-  // end of class functions
-
-  // vector space operations
-  P operator- (P u) 
-  { 
-    return u *= -1;
-  }
-
-  P operator+ (P u, const P& v) 
-  { 
-    return u += v;
-  }
-
-  P operator- (P u, const P& v) 
-  { 
-    return u -= v;
-  }
-
-  // scalar multiplication
-  P operator* (double c, P v) 
-  { 
-    return v *= c;
-  }
-
-  // cross product
-  P operator* (P u, const P& v) 
-  { 
-    return u *= v;
-  }
-
-  P J(P arg) 
-  {
-    // E_3 * arg, but E_3 is const
-    return arg *= -E_3; 
-  }
-
-  // dot product
-  double operator | (const P& u, const P& v) 
-  { 
-    return u.x1()*v.x1() + u.x2()*v.x2() + u.x3()*v.x3(); 
-  }
-
-  double norm(const P& u)
-  {
-    return sqrt(u|u);
-  }
-
-  // componentwise product (a,b,c)&(x,y,z)=(ax,by,cz)
-  P operator& (P u, const P& v) 
-  { 
-    return u &= v;
-  }
-
-  P operator% (P u, const P& v) 
-  { 
-    return u %= v;
-  }
-
-  // (in)equality
-  bool operator == (const P& u, const P& v)
-  { 
-    return (norm(u-v) < EPIX_EPSILON); 
-  }
-
-  bool operator != (const P& u, const P& v)
-  { 
-    return !(u==v); 
-  }
-} // end of namespace
diff --git a/graphics/epix/triples.h b/graphics/epix/triples.h
deleted file mode 100644
index 54f5c5581b..0000000000
--- a/graphics/epix/triples.h
+++ /dev/null
@@ -1,115 +0,0 @@
-/* 
- *  triples.h -- ePiX::P class
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.10
- * Last Change: August 04, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-/*
- *   This file provides:
- *
- *   The P class (ordered triple of <double>s) and operators
- *
- *    - P(), P() (default to origin), E_1, E_2, E_3 (standard basis)
- *    - Vector space operators
- *    - Other vector operators, operands (a,b,c), (x,y,z)
- *       | dot product                      ax + by + cz
- *       norm(p) = sqrt(p|p)
- *       & componentwise product            (ax, by, cz)
- *       * cross product                    (bz-cy, cx-az, ay-bx)
- *       J rotate (x1,x2,0)-plane 1/4 turn  (-b,a,0)
- *       % orthogonalization                u%v = u - ((u|v)/(v|v))*v
- */
-#ifndef EPIX_TRIPLES
-#define EPIX_TRIPLES
-
-namespace ePiX {
-
-  class P {
-  public:
-    P(double arg1=0, double arg2=0, double arg3=0);
-
-    double x1() const;
-    double x2() const;
-    double x3() const;
-
-    bool is_valid() const; // coords not inf or nan
-
-    // increment operators
-    P& operator += (const P&);
-    P& operator -= (const P&);
-    P& operator *= (double); // scalar multipication
-
-    // cross product
-    P& operator *= (const P&);
-
-    // componentwise product
-    P& operator &= (const P&);
-
-    // orthogonalization: u %= v is the vector of the form u-k*v perp to v
-    P& operator %= (const P&);
-
-  private:
-    double m_x1, m_x2, m_x3;
-  }; // end of class P
-
-
-  // standard basis in global namespace
-  const P E_1(1,0,0);
-  const P E_2(0,1,0);
-  const P E_3(0,0,1);
-
-  // vector space operations
-  P operator- (P u);  // unary negation
-  P operator+ (P u, const P& v);
-  P operator- (P u, const P& v);
-  // scalar multiplication
-  P operator* (double c, P v);
-
-  // cross product
-  P operator* (P, const P&);
-  P J(P); // quarter turn about E_3-axis
-
-  // dot product
-  double operator | (const P&, const P&);
-  double norm(const P&);
-
-  // componentwise product (a,b,c)&(x,y,z)=(ax,by,cz)
-  P operator& (P, const P&);
-  // orthogonalization
-  P operator% (P, const P&);
-
-  // (in)equality
-  bool operator == (const P&, const P&);
-  bool operator != (const P&, const P&);
-
-} // end of namespace
-
-#endif /* EPIX_TRIPLES */
diff --git a/graphics/epix/utils.cc b/graphics/epix/utils.cc
deleted file mode 100644
index 2b57ddf1ea..0000000000
--- a/graphics/epix/utils.cc
+++ /dev/null
@@ -1,124 +0,0 @@
-/*
- * utils.cc -- global utility functions for ePiX
- *
- * This file is part of ePiX, a C++ library for creating high-quality
- * figures in LaTeX
- *
- * Version 1.1.18
- * Last Change: September 15, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include <string>
-#include <cmath>
-#include <ctime>
-
-#include "constants.h"
-#include "utils.h"
-
-namespace ePiX {
-
-  const std::string epix_version()
-  {
-    return "1.2.1";
-  }
-
-  double truncate(double arg)
-  {
-    return fabs(arg) < EPIX_EPSILON ? 0 : arg;
-  }
-
-  std::string date_and_time()
-    {
-      ////// N.B.: Revise this if time format string changes!
-      const int max_len = 31;
-      char buf[max_len];
-      time_t t=time(0);
-
-      // strftime(buf, max_len, "%c", localtime(&t));
-
-      // Sat Jul  1 23:25:39 2006 (GMT)
-      strftime(buf, max_len, "%a %b %d %X %Y (%Z)", gmtime(&t));
-      return std::string(buf);
-    }
-
-
-  // remove everything from arg except chars in srch
-  std::string get_chars(std::string arg, const std::string& srch)
-  {
-    std::string::size_type curr(0);
-    std::string::size_type next(arg.find_first_of(srch));
-
-    while (next != std::string::npos)
-      {
-	arg.erase(curr, next-curr);
-
-	curr = arg.find_first_not_of(srch);
-	next = arg.find_first_of(srch, curr);
-      }
-
-    if (next != curr)
-      arg.erase(curr, next);
-
-    return arg;
-  }
-
-  // add linebreaks before opening parentheses to make lines at most
-  // FILE_WIDTH characters long; return reference to arg
-  std::string break_lines(std::string arg, const std::string& path_break)
-  {
-    std::string value; // append here; swap with arg at end
-
-    // initialize markers prev, curr, next
-    std::string::size_type prev(0); // position of last line break
-    std::string::size_type next(arg.find_first_of("("));
-    std::string::size_type curr(next);
-
-    unsigned int pbk_sz(path_break.size());
-
-    while (next != std::string::npos)
-      {
-	// seek next break points
-	while (next-prev <= EPIX_FILE_WIDTH - pbk_sz)
-	  {
-	    curr = next;
-	    next = arg.find_first_of("(", ++next);
-	  }
-
-	value.append(arg, prev, curr-prev); // append current line
-	// Magic number 20 (greater than width of a printed pair)
-	if (next - prev <= 20+EPIX_FILE_WIDTH) // not at end of data
-	  value += path_break;              // and formatting string
-	prev = curr;                        // update front of line
-      }
-
-    // get remaining characters
-    value.append(arg, prev, next-prev);
-
-    swap(arg, value);
-    return arg;
-  }
-} // end of namespace
diff --git a/graphics/epix/utils.h b/graphics/epix/utils.h
deleted file mode 100644
index 018efcdfca..0000000000
--- a/graphics/epix/utils.h
+++ /dev/null
@@ -1,56 +0,0 @@
-/*
- * utils.h -- global utility functions for ePiX
- *
- * This file is part of ePiX, a C++ library for creating high-quality
- * figures in LaTeX
- *
- * Version 1.1.18
- * Last Change: September 15, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#ifndef EPIX_UTILS
-#define EPIX_UTILS
-
-#include <string>
-
-namespace ePiX {
-
-  const std::string epix_version();
-
-  double truncate(double); // return 0 if fabs(arg) < epsilon
-
-  // print GMT string for file header
-  std::string date_and_time();
-
-  // remove everything from arg except chars in srch
-  std::string get_chars(std::string arg, const std::string& srch);
-
-  // Use break to split arg into lines of at most FILE_WIDTH characters,
-  // return mangled copy of arg
-  std::string break_lines(std::string arg, const std::string& break_str);
-}
-#endif /* EPIX_UTILS */
diff --git a/graphics/epix/verbatim.cc b/graphics/epix/verbatim.cc
deleted file mode 100644
index 8f7df3b3fb..0000000000
--- a/graphics/epix/verbatim.cc
+++ /dev/null
@@ -1,80 +0,0 @@
-/* 
- * verbatim.cc -- ePiX screen implemenation for verbatim text
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX 
- *
- * Version 1.1.7
- * Last Change: July 14, 2007
- */
-
-/* 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- */
-
-/*
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include <sstream>
-
-#include "format.h"
-#include "verbatim.h"
-
-namespace ePiX {
-
-  class affine;
-  class screen_mask;
-
-  verbatim::verbatim(const std::string& text) : m_text(text)
-  {
-  }
-
-  verbatim& verbatim::map_by(const affine& f)
-  {
-    return *this;
-  }
-
-  verbatim& verbatim::crop_to(const screen_mask& M)
-  {
-    return *this;
-  }
-
-  verbatim* verbatim::clone() const
-  {
-    return new verbatim(*this);
-  }
-
-  bool verbatim::is_empty() const
-  {
-    return (m_text == "");
-  }
-
-  std::string verbatim::print_to(const format& fmt, const std::string& L) const
-  {
-    if (is_empty())
-      return "";
-
-    // else
-    return fmt.print_verbatim(m_text);
-  }
-
-  void verbatim::add_to_pallet() const { }
-} // end of namespace
-
diff --git a/graphics/epix/verbatim.h b/graphics/epix/verbatim.h
deleted file mode 100644
index 39b2d3b9d5..0000000000
--- a/graphics/epix/verbatim.h
+++ /dev/null
@@ -1,66 +0,0 @@
-/* 
- * verbatim.h -- ePiX screen implemenation of verbatim text
- *
- * This file is part of ePiX, a C++ library for creating high-quality 
- * figures in LaTeX
- *
- * Version 1.1.7
- * Last Change: July 14, 2007
- *
- * 
- * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
- * Department of Mathematics and Computer Science
- * College of the Holy Cross
- * Worcester, MA, 01610-2395, USA
- *
- *
- * ePiX is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * ePiX is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with ePiX; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#ifndef EPIX_VERBATIM
-#define EPIX_VERBATIM
-
-#include <string>
-
-#include "tile.h"
-
-namespace ePiX {
-
-  class format;
-  class affine;
-  class screen_mask;
-
-  class verbatim : public tile {
-  public:
-    verbatim(const std::string& text="");
-
-    verbatim& map_by(const affine&);
-    verbatim& crop_to(const screen_mask&);
-
-    verbatim* clone() const;
-
-    bool is_empty() const;
-
-    std::string print_to(const format&, const std::string&) const;
-    void add_to_pallet() const;
-
-  private:
-    std::string m_text;
-  }; // end of class verbatim
-
-} // end of namespace
-
-#endif /* EPIX_VERBATIM */
diff --git a/graphics/pgf/contrib/commutative-diagrams/commutative-diagrams-doc.pdf b/graphics/pgf/contrib/commutative-diagrams/commutative-diagrams-doc.pdf
index e479e4960f..f9dd77a8a2 100644
--- a/graphics/pgf/contrib/commutative-diagrams/commutative-diagrams-doc.pdf
+++ b/graphics/pgf/contrib/commutative-diagrams/commutative-diagrams-doc.pdf
diff --git a/graphics/pgf/contrib/commutative-diagrams/commutative-diagrams-doc.tex b/graphics/pgf/contrib/commutative-diagrams/commutative-diagrams-doc.tex
index 5c68664271..bb431eb276 100644
--- a/graphics/pgf/contrib/commutative-diagrams/commutative-diagrams-doc.tex
+++ b/graphics/pgf/contrib/commutative-diagrams/commutative-diagrams-doc.tex
@@ -3,7 +3,7 @@
 % Copyright (c) 2015-2020 Paolo Brasolin <paolo.brasolin@gmail.com>
 % SPDX-License-Identifier: MIT
 %
-% This file is part of CoDi 1.0.0, released on 2020/06/06 under MIT license.
+% This file is part of CoDi 1.0.1, released on 2020/06/11 under MIT license.
 %
 
 %==[ document class ]===========================================================
@@ -401,7 +401,7 @@
 \resizebox{\linewidth}{!}{\scshape enchiridion}\par
 \vfill
 \marginpar{
-  \resizebox{\linewidth}{!}{\scshape 1.0.0}\\[0.62em]
+  \resizebox{\linewidth}{!}{\scshape 1.0.1}\\[0.62em]
   \resizebox{\linewidth}{!}{\scshape \today}
 }
 
diff --git a/graphics/pgf/contrib/commutative-diagrams/commutative-diagrams.sty b/graphics/pgf/contrib/commutative-diagrams/commutative-diagrams.sty
index 63bfde447f..56b5a0c657 100644
--- a/graphics/pgf/contrib/commutative-diagrams/commutative-diagrams.sty
+++ b/graphics/pgf/contrib/commutative-diagrams/commutative-diagrams.sty
@@ -3,11 +3,11 @@
 % Copyright (c) 2015-2020 Paolo Brasolin <paolo.brasolin@gmail.com>
 % SPDX-License-Identifier: MIT
 %
-% This file is part of CoDi 1.0.0, released on 2020/06/06 under MIT license.
+% This file is part of CoDi 1.0.1, released on 2020/06/11 under MIT license.
 %
 
 \RequirePackage{tikz}%[2013/12/13] % pgf version 3.0.0 required
-\ProvidesPackage{commutative-diagrams}[2020/06/06 1.0.0 CoDi: Commutative Diagrams for TeX]
+\ProvidesPackage{commutative-diagrams}[2020/06/11 1.0.1 CoDi: Commutative Diagrams for TeX]
 \usetikzlibrary{commutative-diagrams}
 \let\codi\kDRammaOpen
 \let\endcodi\kDRammaShut
diff --git a/graphics/pgf/contrib/commutative-diagrams/commutative-diagrams.tex b/graphics/pgf/contrib/commutative-diagrams/commutative-diagrams.tex
index f9ac654c65..8cd0ed181d 100644
--- a/graphics/pgf/contrib/commutative-diagrams/commutative-diagrams.tex
+++ b/graphics/pgf/contrib/commutative-diagrams/commutative-diagrams.tex
@@ -3,7 +3,7 @@
 % Copyright (c) 2015-2020 Paolo Brasolin <paolo.brasolin@gmail.com>
 % SPDX-License-Identifier: MIT
 %
-% This file is part of CoDi 1.0.0, released on 2020/06/06 under MIT license.
+% This file is part of CoDi 1.0.1, released on 2020/06/11 under MIT license.
 %
 
 \input tikz.tex
diff --git a/graphics/pgf/contrib/commutative-diagrams/kodi.sty b/graphics/pgf/contrib/commutative-diagrams/kodi.sty
index 9443a2d8b0..149c1cbe10 100644
--- a/graphics/pgf/contrib/commutative-diagrams/kodi.sty
+++ b/graphics/pgf/contrib/commutative-diagrams/kodi.sty
@@ -3,7 +3,7 @@
 % Copyright (c) 2015-2020 Paolo Brasolin <paolo.brasolin@gmail.com>
 % SPDX-License-Identifier: MIT
 %
-% This file is part of CoDi 1.0.0, released on 2020/06/06 under MIT license.
+% This file is part of CoDi 1.0.1, released on 2020/06/11 under MIT license.
 %
 
 \RequirePackage{commutative-diagrams}
diff --git a/graphics/pgf/contrib/commutative-diagrams/t-commutative-diagrams.tex b/graphics/pgf/contrib/commutative-diagrams/t-commutative-diagrams.tex
index 2c03eaa948..6a65083d05 100644
--- a/graphics/pgf/contrib/commutative-diagrams/t-commutative-diagrams.tex
+++ b/graphics/pgf/contrib/commutative-diagrams/t-commutative-diagrams.tex
@@ -3,10 +3,10 @@
 % Copyright (c) 2015-2020 Paolo Brasolin <paolo.brasolin@gmail.com>
 % SPDX-License-Identifier: MIT
 %
-% This file is part of CoDi 1.0.0, released on 2020/06/06 under MIT license.
+% This file is part of CoDi 1.0.1, released on 2020/06/11 under MIT license.
 %
 
-\writestatus{loading}{2020/06/06 1.0.0 CoDi: Commutative Diagrams for TeX}
+\writestatus{loading}{2020/06/11 1.0.1 CoDi: Commutative Diagrams for TeX}
 \startmodule[commutative-diagrams]
 \usemodule[tikz]
 \usetikzlibrary[commutative-diagrams]
diff --git a/graphics/pgf/contrib/commutative-diagrams/tikzlibrarycommutative-diagrams.bapto.code.tex b/graphics/pgf/contrib/commutative-diagrams/tikzlibrarycommutative-diagrams.bapto.code.tex
index e417dc7f08..57339b8696 100644
--- a/graphics/pgf/contrib/commutative-diagrams/tikzlibrarycommutative-diagrams.bapto.code.tex
+++ b/graphics/pgf/contrib/commutative-diagrams/tikzlibrarycommutative-diagrams.bapto.code.tex
@@ -3,7 +3,7 @@
 % Copyright (c) 2015-2020 Paolo Brasolin <paolo.brasolin@gmail.com>
 % SPDX-License-Identifier: MIT
 %
-% This file is part of CoDi 1.0.0, released on 2020/06/06 under MIT license.
+% This file is part of CoDi 1.0.1, released on 2020/06/11 under MIT license.
 %
 
 % βάπτω • (báptō)
diff --git a/graphics/pgf/contrib/commutative-diagrams/tikzlibrarycommutative-diagrams.code.tex b/graphics/pgf/contrib/commutative-diagrams/tikzlibrarycommutative-diagrams.code.tex
index eabf14dd06..d1a8ece647 100644
--- a/graphics/pgf/contrib/commutative-diagrams/tikzlibrarycommutative-diagrams.code.tex
+++ b/graphics/pgf/contrib/commutative-diagrams/tikzlibrarycommutative-diagrams.code.tex
@@ -3,7 +3,7 @@
 % Copyright (c) 2015-2020 Paolo Brasolin <paolo.brasolin@gmail.com>
 % SPDX-License-Identifier: MIT
 %
-% This file is part of CoDi 1.0.0, released on 2020/06/06 under MIT license.
+% This file is part of CoDi 1.0.1, released on 2020/06/11 under MIT license.
 %
 
 %==[ dependencies graph ]=======================================================
diff --git a/graphics/pgf/contrib/commutative-diagrams/tikzlibrarycommutative-diagrams.diorthono.code.tex b/graphics/pgf/contrib/commutative-diagrams/tikzlibrarycommutative-diagrams.diorthono.code.tex
index 4a79abdbcc..90677affb5 100644
--- a/graphics/pgf/contrib/commutative-diagrams/tikzlibrarycommutative-diagrams.diorthono.code.tex
+++ b/graphics/pgf/contrib/commutative-diagrams/tikzlibrarycommutative-diagrams.diorthono.code.tex
@@ -3,7 +3,7 @@
 % Copyright (c) 2015-2020 Paolo Brasolin <paolo.brasolin@gmail.com>
 % SPDX-License-Identifier: MIT
 %
-% This file is part of CoDi 1.0.0, released on 2020/06/06 under MIT license.
+% This file is part of CoDi 1.0.1, released on 2020/06/11 under MIT license.
 %
 
 % διορθώνω • (diorthóno)
diff --git a/graphics/pgf/contrib/commutative-diagrams/tikzlibrarycommutative-diagrams.ektropi.code.tex b/graphics/pgf/contrib/commutative-diagrams/tikzlibrarycommutative-diagrams.ektropi.code.tex
index 3a698436c4..0a418942c6 100644
--- a/graphics/pgf/contrib/commutative-diagrams/tikzlibrarycommutative-diagrams.ektropi.code.tex
+++ b/graphics/pgf/contrib/commutative-diagrams/tikzlibrarycommutative-diagrams.ektropi.code.tex
@@ -3,7 +3,7 @@
 % Copyright (c) 2015-2020 Paolo Brasolin <paolo.brasolin@gmail.com>
 % SPDX-License-Identifier: MIT
 %
-% This file is part of CoDi 1.0.0, released on 2020/06/06 under MIT license.
+% This file is part of CoDi 1.0.1, released on 2020/06/11 under MIT license.
 %
 
 % εκτροπή • (ektropí)
diff --git a/graphics/pgf/contrib/commutative-diagrams/tikzlibrarycommutative-diagrams.katharizo.code.tex b/graphics/pgf/contrib/commutative-diagrams/tikzlibrarycommutative-diagrams.katharizo.code.tex
index ef3c4ea0fc..f89e99c9c0 100644
--- a/graphics/pgf/contrib/commutative-diagrams/tikzlibrarycommutative-diagrams.katharizo.code.tex
+++ b/graphics/pgf/contrib/commutative-diagrams/tikzlibrarycommutative-diagrams.katharizo.code.tex
@@ -3,7 +3,7 @@
 % Copyright (c) 2015-2020 Paolo Brasolin <paolo.brasolin@gmail.com>
 % SPDX-License-Identifier: MIT
 %
-% This file is part of CoDi 1.0.0, released on 2020/06/06 under MIT license.
+% This file is part of CoDi 1.0.1, released on 2020/06/11 under MIT license.
 %
 
 % καθαρίζω • (katharízo)
diff --git a/graphics/pgf/contrib/commutative-diagrams/tikzlibrarycommutative-diagrams.koinos.code.tex b/graphics/pgf/contrib/commutative-diagrams/tikzlibrarycommutative-diagrams.koinos.code.tex
index c2b378f38a..5e15eab768 100644
--- a/graphics/pgf/contrib/commutative-diagrams/tikzlibrarycommutative-diagrams.koinos.code.tex
+++ b/graphics/pgf/contrib/commutative-diagrams/tikzlibrarycommutative-diagrams.koinos.code.tex
@@ -3,7 +3,7 @@
 % Copyright (c) 2015-2020 Paolo Brasolin <paolo.brasolin@gmail.com>
 % SPDX-License-Identifier: MIT
 %
-% This file is part of CoDi 1.0.0, released on 2020/06/06 under MIT license.
+% This file is part of CoDi 1.0.1, released on 2020/06/11 under MIT license.
 %
 
 % κοινός • (koinós)
diff --git a/graphics/pgf/contrib/commutative-diagrams/tikzlibrarycommutative-diagrams.mandyas.code.tex b/graphics/pgf/contrib/commutative-diagrams/tikzlibrarycommutative-diagrams.mandyas.code.tex
index 2d43ef5d55..b1116fd50a 100644
--- a/graphics/pgf/contrib/commutative-diagrams/tikzlibrarycommutative-diagrams.mandyas.code.tex
+++ b/graphics/pgf/contrib/commutative-diagrams/tikzlibrarycommutative-diagrams.mandyas.code.tex
@@ -3,7 +3,7 @@
 % Copyright (c) 2015-2020 Paolo Brasolin <paolo.brasolin@gmail.com>
 % SPDX-License-Identifier: MIT
 %
-% This file is part of CoDi 1.0.0, released on 2020/06/06 under MIT license.
+% This file is part of CoDi 1.0.1, released on 2020/06/11 under MIT license.
 %
 
 % μανδύας • (mandýas)
@@ -20,6 +20,7 @@
 % \usetikzlibrary{decorations.pathmorphing}
 % \usetikzlibrary[decorations.markings]
 % \usetikzlibrary[arrows.meta]
+\usetikzlibrary[positioning]
 
 \pgfqkeys{/codi}{
 %==[ universal styles ]=========================================================
diff --git a/graphics/pgf/contrib/commutative-diagrams/tikzlibrarycommutative-diagrams.mitra.code.tex b/graphics/pgf/contrib/commutative-diagrams/tikzlibrarycommutative-diagrams.mitra.code.tex
index 211ade2f4c..90b41a7eb4 100644
--- a/graphics/pgf/contrib/commutative-diagrams/tikzlibrarycommutative-diagrams.mitra.code.tex
+++ b/graphics/pgf/contrib/commutative-diagrams/tikzlibrarycommutative-diagrams.mitra.code.tex
@@ -3,7 +3,7 @@
 % Copyright (c) 2015-2020 Paolo Brasolin <paolo.brasolin@gmail.com>
 % SPDX-License-Identifier: MIT
 %
-% This file is part of CoDi 1.0.0, released on 2020/06/06 under MIT license.
+% This file is part of CoDi 1.0.1, released on 2020/06/11 under MIT license.
 %
 
 % μήτρα • (mítra)
diff --git a/graphics/pgf/contrib/commutative-diagrams/tikzlibrarycommutative-diagrams.ozos.code.tex b/graphics/pgf/contrib/commutative-diagrams/tikzlibrarycommutative-diagrams.ozos.code.tex
index 07d375cc43..b309cc3b13 100644
--- a/graphics/pgf/contrib/commutative-diagrams/tikzlibrarycommutative-diagrams.ozos.code.tex
+++ b/graphics/pgf/contrib/commutative-diagrams/tikzlibrarycommutative-diagrams.ozos.code.tex
@@ -3,7 +3,7 @@
 % Copyright (c) 2015-2020 Paolo Brasolin <paolo.brasolin@gmail.com>
 % SPDX-License-Identifier: MIT
 %
-% This file is part of CoDi 1.0.0, released on 2020/06/06 under MIT license.
+% This file is part of CoDi 1.0.1, released on 2020/06/11 under MIT license.
 %
 
 % όζος • (ózos)
diff --git a/graphics/pgf/contrib/commutative-diagrams/tikzlibrarycommutative-diagrams.ramma.code.tex b/graphics/pgf/contrib/commutative-diagrams/tikzlibrarycommutative-diagrams.ramma.code.tex
index 1854abb67e..cdc8ceaab5 100644
--- a/graphics/pgf/contrib/commutative-diagrams/tikzlibrarycommutative-diagrams.ramma.code.tex
+++ b/graphics/pgf/contrib/commutative-diagrams/tikzlibrarycommutative-diagrams.ramma.code.tex
@@ -3,7 +3,7 @@
 % Copyright (c) 2015-2020 Paolo Brasolin <paolo.brasolin@gmail.com>
 % SPDX-License-Identifier: MIT
 %
-% This file is part of CoDi 1.0.0, released on 2020/06/06 under MIT license.
+% This file is part of CoDi 1.0.1, released on 2020/06/11 under MIT license.
 %
 
 % ράμμα • (rámma)
diff --git a/graphics/pgf/contrib/commutative-diagrams/tikzlibrarycommutative-diagrams.velos.code.tex b/graphics/pgf/contrib/commutative-diagrams/tikzlibrarycommutative-diagrams.velos.code.tex
index 5072b97d7c..b1d500cdbc 100644
--- a/graphics/pgf/contrib/commutative-diagrams/tikzlibrarycommutative-diagrams.velos.code.tex
+++ b/graphics/pgf/contrib/commutative-diagrams/tikzlibrarycommutative-diagrams.velos.code.tex
@@ -3,7 +3,7 @@
 % Copyright (c) 2015-2020 Paolo Brasolin <paolo.brasolin@gmail.com>
 % SPDX-License-Identifier: MIT
 %
-% This file is part of CoDi 1.0.0, released on 2020/06/06 under MIT license.
+% This file is part of CoDi 1.0.1, released on 2020/06/11 under MIT license.
 %
 
 % βέλος • (vélos)
diff --git a/graphics/svg/README.md b/graphics/svg/README.md
index 77441af55c..e0e785fc6b 100644
--- a/graphics/svg/README.md
+++ b/graphics/svg/README.md
@@ -3,9 +3,9 @@
 ----------------------------------------------------------------------------
 
  Copyright (C) Philip Ilten <philten@cern.ch>, 2012-2016<br>
- Copyright (C) Falk Hanisch <hanisch.latex@outlook.com>, 2017-
+ Copyright (C) Falk Hanisch <hanisch.latex@outlook.com>, 2017-2020
 
- **svg 2020/05/07 v2.02f**
+ **svg 2020/06/12 v2.02g**
 
 ----------------------------------------------------------------------------
 
@@ -39,6 +39,10 @@ can be invoked.
 Versions
 --------
 
+**v2.02g** (2020/06/12)
++ hot fix for including files with mutliple dots in it's names, 
+  see https://github.com/mrpiggi/svg/issues/27
+
 **v2.02f** (2020/05/07)
 + support for ***Inkscape*** 1.0
 
diff --git a/graphics/svg/doc/svg.pdf b/graphics/svg/doc/svg.pdf
index 0cf75be787..98e6a99382 100644
--- a/graphics/svg/doc/svg.pdf
+++ b/graphics/svg/doc/svg.pdf
diff --git a/graphics/svg/source/svg.dtx b/graphics/svg/source/svg.dtx
index 84a4041594..51a34dc5f7 100644
--- a/graphics/svg/source/svg.dtx
+++ b/graphics/svg/source/svg.dtx
@@ -1,110 +1,134 @@
 % \iffalse meta-comment
+%<*identify>
 %
 %  svg and svg-extract -- Handling SVG pictures in LaTeX documents
-% ----------------------------------------------------------------------------
 %
-%  Copyright (C) Philip Ilten <philten@cern.ch>, 2012-2016  
-%  Copyright (C) Falk Hanisch <hanisch.latex@outlook.com>, 2017-2020
-%
-% ----------------------------------------------------------------------------
-%
-%  This work may be distributed and/or modified under the conditions of the
-%  LaTeX Project Public License, version 1.3c of the license. The latest
-%  version of this license is in http://www.latex-project.org/lppl.txt and
-%  version 1.3c or later is part of all distributions of LaTeX 2005/12/01
-%  or later and of this work. This work has the LPPL maintenance status
-%  "author-maintained". The current maintainer and author of this work
-%  is Falk Hanisch.
-%
-% ----------------------------------------------------------------------------
+%% ----------------------------------------------------------------------------
+%%
+%% Copyright (C) Philip Ilten <philten@cern.ch>, 2012-2016
+%% Copyright (C) Falk Hanisch <hanisch.latex@outlook.com>, 2017-2020
+%%
+%% ----------------------------------------------------------------------------
+%%
+%% This work may be distributed and/or modified under the conditions
+%% of the LaTeX Project Public License, version 1.3c of the license.
+%% The latest version of this license is in
+%%     http://www.latex-project.org/lppl.txt
+%% and version 1.3c or later is part of all distributions of
+%% LaTeX 2005/12/01 or later and of this work.
+%%
+%% This work has the LPPL maintenance status "author-maintained".
+%%
+%% The current maintainer and author of this work is Falk Hanisch.
+%%
+%% This work consists of the main source file README.md, LICENSE.md, svg.dtx 
+%% and the derived documentation svg.pdf as well as the example files
+%% svg-example.svg, svg-preamble.tex and root.C (with derived file root.svg).
+%%
+%% ----------------------------------------------------------------------------
+%%
+%</identify>
+% \fi
 %
-%<*batchfile>
-\ifx\documentclass\@undefined
+% \iffalse
+%<*dtx>
+\ifx\documentclass\undefined
 \input docstrip.tex
 \keepsilent
 
-\begingroup
-\catcode`\^^M=13 \catcode`\ =12 %
-\gdef\svgpreamble{%
-Copyright (C) Philip Ilten <philten@cern.ch>, 2012-2016  
-Copyright (C) Falk Hanisch <hanisch.latex@outlook.com>, 2017-
-
-This file was generated from file svg.dtx.
-----------------------------------------------------------------------------
-
-This work may be distributed and/or modified under the conditions
-of the LaTeX Project Public License, version 1.3c of the license.
-The latest version of this license is in
-    http://www.latex-project.org/lppl.txt
-and version 1.3c or later is part of all distributions of
-LaTeX 2005/12/01 or later and of this work.
-
-This work has the LPPL maintenance status "author-maintained".
-
-The current maintainer and author of this work is Falk Hanisch.
-
-This work consists of the main source file README.md, LICENSE.md, svg.dtx 
-and the derived documentation svg.pdf as well as the example files
-svg-example.svg, svg-preamble.tex and root.C (with derived file root.svg).
-}
-\endgroup
-
-\declarepreamble\svgbasepreamble
+\declarepreamble\svgmainpreamble
 
 svg -- Include SVG pictures in LaTeX documents using Inkscape
 
-\svgpreamble
-
 \endpreamble
 \declarepreamble\svgextractpreamble
 
 svg-extract -- Extract independent graphic files from SVG pictures
 
-\svgpreamble
-
 \endpreamble
 \askforoverwritefalse
 \usedir{tex/latex/svg}
 \generate{%
-  \usepreamble\svgbasepreamble
-  \file{svg.sty}{%
-    \from{svg.dtx}{package,option,base}%
-    \from{svg.dtx}{package,body,base}%
+  \usepreamble\svgmainpreamble
+  \file{svg.sty}{
+    \from{svg.dtx}{package,identify,main}
+    \from{svg.dtx}{package,base,main}
+    \from{svg.dtx}{package,option,main}
+    \from{svg.dtx}{package,body,main}
   }
   \usepreamble\svgextractpreamble
-  \file{svg-extract.sty}{%
-    \from{svg.dtx}{package,option,extract}%
-    \from{svg.dtx}{package,body,extract}%
+  \file{svg-extract.sty}{
+    \from{svg.dtx}{package,identify,extract}
+    \from{svg.dtx}{package,base,extract}
+    \from{svg.dtx}{package,option,extract}
+    \from{svg.dtx}{package,standalone,extract}
+    \from{svg.dtx}{package,body,extract}
   }
 %  \usepreamble\defaultpreamble
-%  \file{svg-old.sty}{%
-%    \from{svg.dtx}{package,old}%
+%  \file{svg-old.sty}{
+%    \from{svg.dtx}{package,old}
 %  }
 }
 \else
 \let\endbatchfile\relax
 \fi
 \endbatchfile
-%</batchfile>
+%</dtx>
 % \fi
 %
 % \iffalse
-%<package&option>\NeedsTeXFormat{LaTeX2e}[2020-02-02]
-%<*driver>
-\ifx\ProvidesFile\@undefined\def\ProvidesFile#1[#2]{}\fi
-\ProvidesFile{svg.dtx}[%
-%</driver>
-%<package&option&base>\ProvidesPackage{svg}[%
-%<package&option&extract>\ProvidesPackage{svg-extract}[%
-%<*driver|package&option>
-  2020/05/07 v2.02f\space%
-%<package&option&base>  (include SVG pictures)%
-%<package&option&extract>  (extract independent graphics from SVG pictures)%
-]
-%</driver|package&option>
-%<*driver>
+%<*dtx|package&identify>
+\NeedsTeXFormat{LaTeX2e}[2020-02-02]
+%<*dtx>
+\ifx\ProvidesFile\undefined\def\ProvidesFile#1[#2]{}\fi
+%</dtx>
+\begingroup
+  \catcode`\@11\relax%
+  \def\svg@Provides#1#2[#3]{%
+    \def\@tempa{\def\svg@version{#3}}%
+    \ifx\svg@version\@undefined\else%
+      \def\@tempb{#3}%
+      \ifx\svg@version\@tempb\else%
+        \def\@tempa{%
+          \@latex@warning@no@line{%
+            The version of package `#1' is `#3',\MessageBreak%
+            but `\svg@version' was expected!\MessageBreak%
+            You should update the svg bundle%
+          }%
+        }%
+      \fi%
+    \fi%
+    \edef\@tempb{%
+      \endgroup%
+%<*dtx>
+      \noexpand\ProvidesFile%
+%</dtx>
+%<package&identify>      \noexpand\ProvidesPackage%
+      {#1}[#3\space(#2)]%
+%<package&identify&extract>      \noexpand\RequirePackage{svg}[#3]%
+      \unexpanded\expandafter{\@tempa}%
+    }%
+  }%
+  \svg@Provides%
+%<*dtx>
+  {svg.dtx}{source}%
+%</dtx>
+%<package&identify&main>  {svg}{include SVG pictures}%
+%<package&identify&extract>  {svg-extract}{extract graphics from SVG pictures}%
+  [2020/06/12 v2.02g]%
+\@tempb
+%</dtx|package&identify>
+% \fi
+%
+% \iffalse
+%<*dtx>
 \documentclass[english,xindy]{tudscrdoc}[2017/03/27]
-\usepackage[T1]{fontenc}
+\usepackage{iftex}[2020/03/06]
+\iftutex
+  \usepackage{fontspec}
+\else
+  \usepackage[T1]{fontenc}
+\fi
 \usepackage{babel}
 \KOMAoptions{parskip=half-}
 \usepackage{marginnote}
@@ -129,18 +153,18 @@ svg-extract -- Extract independent graphic files from SVG pictures
 
 \usepackage{listings}
 \lstset{%
-  inputencoding=utf8,extendedchars=true,
+  inputencoding=utf8,extendedchars=true,%
   literate=%
     {ä}{{\"a}}1 {ö}{{\"o}}1 {ü}{{\"u}}1
     {Ä}{{\"A}}1 {Ö}{{\"O}}1 {Ü}{{\"U}}1
-    {~}{{\textasciitilde}}1 {ß}{{\ss}}1
+    {ß}{{\ss}}1 {~}{{\textasciitilde}}1
+    {»}{{\guillemetright}}1 {«}{{\guillemetleft}}1
 }
 \newcommand*\svglstbelowskip{\medskipamount}
 \AtBeginDocument{%
-  \edef\svglstbelowskip{\the\glueexpr\medskipamount-\parskip\relax}
+  \renewcommand*\svglstbelowskip{\glueexpr\medskipamount-\parskip\relax}%
 }
 \lstdefinestyle{svg}{%
-%  language=[LaTeX]TeX,%
   basicstyle=\small\ttfamily,%
   columns=flexible,%
   frame=single,%
@@ -148,7 +172,7 @@ svg-extract -- Extract independent graphic files from SVG pictures
   xleftmargin=\fboxsep,%
   xrightmargin=\fboxsep,%
   gobble=2,%
-  escapechar=§,
+  escapechar=§,%
   belowskip=\svglstbelowskip,%
 }
 \lstnewenvironment{svgexample}[1][]{%
@@ -168,35 +192,36 @@ svg-extract -- Extract independent graphic files from SVG pictures
 \CodelineIndex
 \RecordChanges
 \GetFileInfo{svg.dtx}
-\title{The packages \pkg{svg} and \pkg{svg-extract}}
-\author{%
-  Philip Ilten (2012--2016) \\
-  Falk Hanisch (2017--) \\
-  \url{https://github.com/mrpiggi/svg} \\
-  \mailto{hanisch.latex@outlook.com}
-}
-\date{\fileversion\nobreakspace(\filedate)}
 
 \begin{document}
-  \maketitle
+  \title{The packages \pkg{svg} and \pkg{svg-extract}}
+  \author{%
+    Philip Ilten (2012--2016)\\%
+    Falk Hanisch (2017--)\\%
+    \url{https://github.com/mrpiggi/svg}\\%
+    \mailto{hanisch.latex@outlook.com}%
+  }
+  \date{\fileversion\nobreakspace(\filedate)}
+  \providerobustcmd*\default[1]{\val{\textit{#1}}}
+  \maketitle%
   \begin{abstract}
     \noindent
     The \pkg{svg} package is intended for the automated integration of 
     SVG~graphics into \LaTeX~documents. Therefor the capabilities provided 
     by \app{Inkscape}---or more precisely its command~line~interface---are used 
     to export the text within a SVG~graphic to a separate file, which is 
-    then rendered by \LaTeX. The two commands \cs{includesvg} and 
+    then rendered by \LaTeX{}. The two commands \cs{includesvg} and 
     \cs{includeinkscape} are provided as central user\hbox{-}interface, 
     which are very similar to the \cs{includegraphics} command of the 
     \pkg{graphicx} package.
     
     In addition, the package \pkg{svg-extract} allows the extraction of these 
     graphics into independent files in different graphic formats, exactly as it 
-    is rendered within the document. For the creation of these graphics in the 
-    well\hbox{-}known formats PDF, EPS and~PS, \LaTeX{} and possibly conversion 
-    tools shipped with the distribution are used. If the graphics are required 
-    in other file formats, either \app{ImageMagick} or \app{Ghostscript} can be 
-    invoked.
+    is rendered within the \LaTeX~document. For the creation of these graphics 
+    in the well\hbox{-}known formats PDF, EPS and~PS, \LaTeX{} and possibly 
+    conversion tools shipped with the distribution are used. If the graphics 
+    are required in other file formats, either \app{ImageMagick} or 
+    \app{Ghostscript} can be invoked.
     
     \bigskip\noindent%
     \fbox{\parbox{\dimexpr\linewidth-(\fboxsep+\fboxrule)*2\relax}{%
@@ -212,30 +237,24 @@ svg-extract -- Extract independent graphic files from SVG pictures
   \tableofcontents
   \DocInput{\filename}
 \end{document}
-%</driver>
+%</dtx>
 % \fi
 %
 % \changes{v1.0}{2004/11/05}{initial version by Philip Ilten}^^A
 % \changes{v2.00}{2016/09/23}{new maintainer: Falk Hanisch}^^A
 % \changes{v2.00}{2017/03/27}{re-implementation from scratch}^^A
 % \changes{v2.00}{2017/03/27}{package \pkg{subfig} not required anymore}^^A
-% \changes{v2.00}{2017/03/27}{support of subfigures stopped due to the huge 
+% \changes{v2.00}{2017/03/27}{support of subfigures stopped due to the huge
 %   number of packages which deal with this topic and the large variety of
 %   implementing this functionality; naming exported graphics after their
 %   consecutive numbering can't be ensured for all variants of subfigures, so
 %   it's neglected}^^A
-% \changes{v2.01}{2017/11/27}{new option \opt{svgextension} to change format of
-%   files exported by \app{Inkscape} from \file{svg} to a custom one}^^A
-% \changes{v2.01}{2017/11/28}{usage of \cs{input}\marg{tex filename} within
-%   \app{Inkscape}~graphics possible; locates files in all declared searched
-%   folders}^^A
+% \changes{v2.01}{2017/11/28}{usage of \cs{input}\marg{tex~filename} within
+%   \app{Inkscape}~graphics locates files in all declared searched folders}^^A
 % \changes{v2.02}{2018/09/07}{package \pkg{trimspaces} required}^^A
 % \changes{v2.02}{2018/09/07}{multiple dots within file names possible}^^A
-% \changes{v2.02}{2018/09/07}{fixed errors with active double qoutes from
+% \changes{v2.02}{2018/09/07}{fixed errors with active double quotes from
 %   \pkg{babel} in path arguments}^^A
-% \changes{v2.02}{2018/09/07}{distortion of included and extracted graphics
-%   supported with options \opt{distort} (or \opt{keepaspectratio}) as well as
-%   \opt{extractdistort} and rotation for extractions (\opt{extractangle})}^^A
 % \changes{v2.02a}{2018/10/17}{fix bug for package \pkg{polyglossia} which
 %   fakes \pkg{babel} poorly}^^A
 % \changes{v2.02b}{2018/11/12}{fix bug for package \pkg{tikzscale} which
@@ -244,9 +263,11 @@ svg-extract -- Extract independent graphic files from SVG pictures
 %   name parsing}^^A
 % \changes{v2.02d}{2019/10/22}{fix bugs with kernel (2019/10/01) regarding file
 %   name parsing, see \url{https://github.com/mrpiggi/svg/issues/16}}^^A
-% \changes{v2.02f}{2020/05/06}{new option {inkscapeversion} for explicitly
-%   setting \app{Inkscape}-CLI version; automatic detection implemented}^^A
-% \ToDo{Workaround for missing \cs{transparent} (Lua\TeX lacks support)}[v2.03]
+% \changes{v2.02d}{2019/10/22}{conditional invocation of \app{Inkscape} export
+%   based on file modification date implemented for Xe\TeX{}}^^A
+% \changes{v2.02f}{2020/05/06}{command~line~interface of \app{Inkscape~1.0} 
+%   is supported}^^A
+% \changes{v2.02g}{2020/06/12}{fix for mutliple dots in file names (\#27)}^^A
 %
 %
 %
@@ -257,13 +278,13 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % the simple and easy creation of images and diagrams using a graphical 
 % user\hbox{-}interface. The work by Johan\,B.\,C.~Engelen has further enhanced 
 % the ability of \app{Inkscape} to split a SVG~file into a text component that
-% can be compiled with \LaTeX, and an image component that can be imported as a 
-% PDF~file. For further information see the documentation of 
+% can be compiled with \LaTeX{}, and an image component that can be imported 
+% as a PDF~file. For further information see the documentation of 
 % \hrfn{http://www.ctan.org/pkg/svg-inkscape}{\pkg{svg-inkscape} on CTAN}.
 % The procedure described therein is taken up and consistently expanded. Thus, 
 % it is now possible to include a SVG~file into a \LaTeX~document where the
-% text within the SVG~graphic will be rendered natively by \LaTeX.
-% 
+% text within the SVG~graphic will be rendered natively by \LaTeX{}.
+%
 % Both packages \pkg{svg} and \pkg{svg-extract} rely heavily upon executing 
 % commands on shell using the \cs{ShellEscape} command---or respectively the
 % old known \cs{write18}---for executing the CLIs of the applications mentioned 
@@ -282,7 +303,7 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % \file{inkscape -V}. Moreover, there are some required packages which are 
 % loaded by packages \pkg{svg} and \pkg{svg-extract} to provide the 
 % functionallity. These are:
-% \begin{description}[parsep=.5\smallskipamount]
+% \begin{description}[parsep=\glueexpr\smallskipamount/2\relax]
 % \item[\pkg{iftex}]
 %   for flow control depending on the used \LaTeX~engine
 % \item[\pkg{scrbase}]
@@ -323,17 +344,17 @@ svg-extract -- Extract independent graphic files from SVG pictures
 %
 %
 %
-% \section{Usage of package \pkg{svg}}\label{sec:inkscape}
+% \section{Usage of package \pkg{svg}\label{sec:inkscape}}
 %
-% The purpose of this package is to include SVG~graphics into a \LaTeX~document.
-% The command \cs{includesvg} is defined which does all necessary steps for
-% this task. It first launches the export of a SVG~file to a supported 
-% file~format with Inkscape, if necessary, and includes the exported 
-% graphic~file afterwards. The usage and the syntax is quite similiar to the
-% command \cs{includegraphics} from the \pkg{graphicx} package. In fact, the
-% inclusion of the exported graphic~file is done with \cs{includegraphics}.
+% The purpose of this package is to include standalone SVG~graphics into a 
+% \LaTeX~document. The command \cs{includesvg} is defined which does all 
+% necessary steps for this task. It first launches the export of a SVG~file 
+% to a supported file~format with Inkscape, if necessary, and includes the 
+% exported graphic~file afterwards. The usage and the syntax is quite similiar 
+% to the command \cs{includegraphics} from the \pkg{graphicx} package. In fact, 
+% the inclusion of the exported graphic~file is done with \cs{includegraphics}.
 %
-% \DescribeOptions{usexcolor,usetransparent,noxcolor,notransparent}
+% \DescribeOptions{usexcolor,usetransparent,noxcolor,notransparent}^^A
 % The packages \pkg{xcolor} and \pkg{transparent} are loaded by default at the 
 % end of package \pkg{svg}. The listed options are intended to prevent these 
 % packages from loading. They are the only options which have to be given while
@@ -349,27 +370,28 @@ svg-extract -- Extract independent graphic files from SVG pictures
 %
 % \subsection{General settings}
 %
-% \DescribeMacro{\svgsetup}
+% \DescribeMacro{\svgsetup}^^A
 % All other options described in detail below can also be changed after loading 
 % the package either in the preamble or within the document. They don't have to 
 % be given as optional argument to \cs{usepackage}\oarg{options}|{svg}| but can 
-% be set by using macro \cs{svgsetup}\marg{options} where \marg{options} is a 
+% be set by using macro \cs{svgsetup}\marg{options} where \meta{options} is a 
 % comma separated list of options. Settings with \cs{svgsetup} are done in the
 % current scope which means globally or within the current group.
 % \begin{svgexample}
 %   \svgsetup§\marg{options}§
 % \end{svgexample}
-% Further, it's possible to reset any setting locally with the optional 
-% argument of the commands \cs{includesvg}\oarg{options}\marg{svg filename} or
-% \cs{includesvg}\oarg{options}\marg{graphic filename}.
+% Further, with the optional argument of commands 
+% \cs{includesvg}\oarg{options}\marg{svg~filename} or
+% \cs{includeinkscape}\oarg{options}\marg{graphic~filename}, it's possible to 
+% reset any setting locally for a certain file.
 %
-% \DescribeMacro{\svgpath}
+% \DescribeMacro{\svgpath}^^A
 % Most likely you want to organize your SVG~files in a separate folder either 
 % as a subfolder in the working directory or elsewhere in your local folder 
 % structure. For this purpose, a list of root paths to SVG~files can be
 % specified using the \cs{svgpath} command in the same way as \cs{graphicspath}
 % is used. Every path has to be given in a group of braces |{}|---even if there 
-% is only one---and terminate with |/| last. For example:
+% is only one---and should terminate with a slash. For example:
 % \begin{svgexample}
 %   \svgpath{{svg/}{/usr/local/svg/}}
 % \end{svgexample}
@@ -377,21 +399,23 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % afterwards in the absolute path \file{/usr/local/svg/}. Further, if no path 
 % was specified with \cs{svgpath} or the desired file wasn't found, all
 % directories given with \cs{graphicspath} are searched too. Please keep in 
-% mind that the current working directory is browsed first in any case. It's 
-% recommended to avoid any spaces and/or quotes respectively \cs{dq} both in 
-% paths and file~names, especially when DVI~output is active.
+% mind that the current working directory is browsed first in any case. 
+% It is recommended to avoid umlauts or any other Non\hbox{-}ASCII characters
+% as well as any spaces and/or quotes respectively \cs{dq} both in paths and 
+% file~names. Especially when DVI~output is active using quotes will certainly
+% cause an error. 
 %
 %
 %
 % \subsection{Options for the invocation of \app{Inkscape}}
 %
-% \DescribeOption{inkscape}
+% \DescribeOption{inkscape}^^A
 % This option controls, when the export with \app{Inkscape} is invoked and is 
-% \val{true} by default.
-% \begin{DescribeValues}
+% \default{true} by default.
+% \begin{DescribeValues}^^A
 % \item[false/off/no]
 %   \app{Inkscape} won't be invoked in any case, no export is done.
-% \item[\textbf{true}/on/yes/newer/onlynewer]
+% \item[\default{true}/on/yes/newer/onlynewer]
 %   The export with \app{Inkscape} will only be done, if the exported 
 %   graphic~file either does not exist or the file~modification date of the
 %   SVG~file is newer than that of the exported graphic~file. Thus the
@@ -401,12 +425,12 @@ svg-extract -- Extract independent graphic files from SVG pictures
 %   The \app{Inkscape}~export will definitely be done, any already existing 
 %   exported file will overwritten regardlessly.
 % \end{DescribeValues}
-% 
+%
 % In addition to controlling the export behavior, the option \opt{inkscape} can 
 % also be used to make additional settings, which then acts as a wrapper for 
 % the options described below.
 %
-% \begin{DescribeValues}
+% \begin{DescribeValues}^^A
 % \item[pdf/eps/ps/png]
 %   see \opt{inkscapeformat}|=|\val{pdf/eps/ps/png}
 % \item[latex/nolatex]
@@ -417,12 +441,12 @@ svg-extract -- Extract independent graphic files from SVG pictures
 %   see \opt{inkscapedpi}|=|\val{\meta{integer}}
 % \end{DescribeValues}
 %
-% \DescribeOption{inkscapepath}
+% \DescribeOption{inkscapepath}^^A
 % The option \opt{inkscapepath} specifies, where the resulting files of the
-% \app{Inkscape}~export should be located. The subfolder \file{./svg-inkscape/} 
-% within the current working directory is used by default 
-% (\opt{inkscapepath}|=|\val{basesubdir}).
-% \begin{DescribeValues}
+% \app{Inkscape}~export should be located. The default setting is 
+% \default{basesubdir}, which uses the subfolder \file{./svg-inkscape/} 
+% within the current working directory.
+% \begin{DescribeValues}^^A
 % \item[svgdir/svgpath]
 %   The PDF/EPS/PS/PNG~graphic~files as well as the \LaTeX~files generated by 
 %   \app{Inkscape} will be located in the same directory as the corresponding
@@ -432,7 +456,7 @@ svg-extract -- Extract independent graphic files from SVG pictures
 %   located in a subfolder named \file{svg-inkscape/}.
 % \item[basedir/basepath/jobdir/jobpath]
 %   All exported files will be located in the current working directory.
-% \item[\textbf{basesubdir}/basesubpath/jobsubdir/jobsubpath]
+% \item[\default{basesubdir}/basesubpath/jobsubdir/jobsubpath]
 %   A subfolder named \file{svg-inkscape/} within the current working directory 
 %   will be used for files generated by \app{Inkscape}.
 % \item[/path/to/somewhere/]
@@ -442,29 +466,32 @@ svg-extract -- Extract independent graphic files from SVG pictures
 %
 % \DescribeOption{inkscapeexe}^^A
 % For including a SVG~file, \app{Inkscape} is used to separate the text and
-% image from the SVG~file itself. In order to run the command~line~interface 
+% image from the SVG~file itself. In order to use the command~line~interface 
 % on shell, the path where the executable is located has to be known to the
-% operating system. You can check this by typing \file{inkscape -V} into the 
-% terminal. If this fails and nothing is returned, you should add the binaray 
-% directory of \app{Inkscape} to the environment variable \file{PATH} on your
-% operating system.
+% operating system and its name is assumed to be \val{inkscape} by default.
 %
-% If this is not possible or you aren't willing to do so, you can use option 
-% \opt{inkscapeexe} \emph{within the document preamble} to set the absolute 
-% path where the executable of \app{Inkscape} is located. The option is set to 
-% \opt{inkscapeexe}|=|\val{inkscape} by default.
+% You can check if the default setting is valid for your system by typing
+% \file{inkscape -V} into the terminal. If this fails and nothing is returned, 
+% you should add the binary directory of \app{Inkscape} to the environment
+% variable \file{PATH} on your operating system. If this is not possible or you
+% aren't willing to do so, you can alternatively use option \opt{inkscapeexe} 
+% \emph{within the document preamble} to set the absolute path where the
+% executable of \app{Inkscape} is located. 
 %
 % \DescribeOption{inkscapeversion}^^A
+% \changes{v2.02f}{2020/05/06}{option {inkscapeversion} for explicitly setting 
+%   \app{Inkscape}-CLI version; automatic detection implemented}^^A
 % The command~line~interface of \app{Inkscape} changed slightly from version
 % \val{0.9x} to \val{1.x} and makes it necessary to distinguish between the two 
 % versions. By default, \opt{inkscapeversion}|=|\val{auto} is set and the used 
-% version is detected by calling the given \opt{inkscapeexe} described above 
-% with parameter~\prm{-V} on shell and evaluating the result by either piping 
-%\val{stdout} or eventually writing it to a temporary file and read this back 
+% version is automatically detected. This is done by calling \app{Inkscape}-CLI 
+% with parameter~\prm{-V} on shell---see option \opt{inkscapeexe} described 
+% above. The returned result is evaluated by either piping \val{stdout} or 
+% eventually---if this fails---writing to a temporary file and read this back
 % in (pipes with a potentially quoted path can not be used with MiK\TeX).^^A
 % \footnote{^^A
-%   If this fails, the used inkscape version is guessed when \cs{svg@ink@run}
-%   is used the very first time.^^A
+%   If this fails too, the \app{Inkscape} version is guessed when macro
+%   \cs{svg@ink@run} is used the very first time.^^A
 % }
 % It is also possible to switch off the automatic detection routine by setting 
 % the desired version manually with either \opt{inkscapeversion}|=|\val{0} to 
@@ -472,12 +499,12 @@ svg-extract -- Extract independent graphic files from SVG pictures
 %
 % \DescribeOption{inkscapename}^^A
 % The file names of the \app{Inkscape}~export are derived from the name of the 
-% base SVG~file by default but can be modified with 
-% \opt{inkscapename}|=|\file{\meta{filename}}. It's possible to use counters 
-% for specifying the name of the exported file. Repeatedly specifying the same
-% file name will overwrite previously created files. 
+% base SVG~file by default. Nevertheless, the name of the exported file can be 
+% customized with \opt{inkscapename}|=|\file{\meta{filename}}. It is possible 
+% to use counters for specifying the name of the exported file. Repeatedly
+% specifying the same file name will overwrite previously created files. 
 %
-% \DescribeOption{inkscapeformat}
+% \DescribeOption{inkscapeformat}^^A
 % With this option, the \app{Inkscape}~export~format can be controlled. Valid 
 % values are \val{pdf}, \val{eps}, \val{ps} and \val{png}, where a \LaTeX~export
 % is not possible for \val{png} and option \opt{inkscapelatex} won't have any 
@@ -485,18 +512,18 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % was detected. In this case \opt{inkscapeformat}|=|\val{eps} is the default
 % setting.
 %
-% \DescribeOption{inkscapelatex}
+% \DescribeOption{inkscapelatex}^^A
 % If option \opt{inkscapelatex}|=|\val{true} is set, the output is split into 
 % a seperate PDF/EPS/PS~file (see option \opt{inkscapeformat}) and a 
 % corresponding \LaTeX~file. This is the default setting. Setting 
 % \opt{inkscapelatex}|=|\val{false} will result in a single PDF/EPS/PS~file,
-% where any contained text won't be rendered by \LaTeX. 
+% where any contained text won't be rendered by \LaTeX{}. 
 %
-% \DescribeOption{inkscapearea}
+% \DescribeOption{inkscapearea}^^A
 % This option controls which area of the SVG~file should be exported, 
-% \val{drawing} is set by default.
-% \begin{DescribeValues}
-% \item[\textbf{drawing}/crop]
+% \default{drawing} is set by default.
+% \begin{DescribeValues}^^A
+% \item[\default{drawing}/crop]
 %   The area exported corresponds to the bounding box of all objects in a
 %   drawing, including any that are not on the page.
 % \item[page/nocrop]
@@ -504,61 +531,65 @@ svg-extract -- Extract independent graphic files from SVG pictures
 %   SVG~file.
 % \end{DescribeValues}
 %
-% \DescribeOption{inkscapedpi}
+% \DescribeOption{inkscapedpi}^^A
 % The resolution used either for PNG~export or for fallback rasterization of 
 % filtered objects when exporting to PDF/EPS/PS~file. For PNG~export it is set 
 % to 300\,dpi by default, if no value was given. The given value should be a 
 % positive integer. The default behaviour can be reversed after a given value
 % with \opt{inkscapedpi}|=|\val{\cs{relax}}.
 %
-% \DescribeOption{inkscapeopt}
+% \DescribeOption{inkscapeopt}^^A
 % You can use this option to pass additional switches to the \app{Inkscape} 
 % command~line~interface. For further information see the documentation of 
 % \hrfn{https://inkscape.org/de/doc/inkscape-man.html}{\app{Inkscape}}.
 %
-% \DescribeOption{svgextension}
+% \DescribeOption{svgextension}^^A
+% \changes{v2.01}{2017/11/27}{option \opt{svgextension} added in order to 
+%   change the format of files exported by \app{Inkscape} from \file{svg} to 
+%   a custom one}^^A
 % The package assumes SVG~files with \file{.svg} extension as source for the 
 % \app{Inkscape} export. This option can be used to change this behaviour. 
 % For example, in order to process \file{.dia} files instead of \file{.svg} you 
 % could use 
 % \begin{svgexample}
-%   \includesvg[svgextension=dia,§\meta{additional options}§]§\marg{filename}§
+%   \includesvg[svgextension=dia,§\meta{additional~options}§]§\marg{filename}§
 % \end{svgexample}
 %
 %
 %
 % \subsection{Options for the graphic inclusion}
 %
-% \DescribeOptions{width,height,distort,scale}
+% \DescribeOptions{width,height,distort,scale}^^A
+% \changes{v2.02}{2018/09/07}{option \opt{distort} (or \opt{keepaspectratio}) 
+%   added for distortion of included graphics}^^A
 % The width of the included graphic~file can be specified via the \opt{width} 
 % option and the height by the \opt{height} option. If both the width and
 % height are specified, the figure will be scaled such that neither of the
 % specified dimensions is exceeded, unless option \opt{distort}|=|\val{true} is 
-% given.\footnote{\ignorespaces%
-%   to provide compatibility for package \pkg{graphicx}, it's possible to use
-%   \prm{keepaspectratio}|=|\val{true} as alias for \opt{distort}|=|\val{false}
-%   and the other way round
-% } If \opt{width} and/or \opt{height} once have been set, this can be undone
+% given.\footnote{to provide compatibility for package \pkg{graphicx}, it's 
+%   possible to use \prm{keepaspectratio}|=|\val{true} as alias for 
+%   \opt{distort}|=|\val{false} and the other way round}
+% If \opt{width} and/or \opt{height} once have been set, this can be undone 
 % by setting them to \val{0pt} or \cs{relax}. If neither \opt{width} nor 
 % \opt{height} are set, the included graphic~file can also be scaled by setting 
 % \opt{scale} to a positive real number.
 %
-% \DescribeOptions{pretex,apptex}
+% \DescribeOptions{pretex,apptex}^^A
 % Commands prior and post to the inclusion of the graphic~file may be desired, 
 % such as font or color commands. The options \opt{pretex} and \opt{apptex} are
 % provided where the \LaTeX~code given to \opt{pretex} is included before the 
 % graphic~file and \opt{apptex} right afterwards. For example, to change the 
 % size of the included text one could use:
 % \begin{svgexample}
-%   \includesvg[pretex=\tiny,§\meta{additional options}§]§\marg{svg filename}§
+%   \includesvg[pretex=\tiny,§\meta{additional~options}§]§\marg{svg~filename}§
 % \end{svgexample}
 %
-% \DescribeOption{draft}
+% \DescribeOption{draft}^^A
 % This option can be used with booelan values and is equal to the identically 
 % named option of the \pkg{graphicx} package. If the \opt{draft} option is
 % given to \pkg{graphicx}, it's activated for \pkg{svg} as well.
 %
-% \DescribeOption{lastpage}
+% \DescribeOption{lastpage}^^A
 % A \hrfn{https://bugs.launchpad.net/ubuntu/+source/inkscape/+bug/1417470}{bug} 
 % concerning the \LaTeX~export has been reported for \app{Inkscape}\,0.91. It 
 % may happen that within the exported \LaTeX~file, it's attempted to include
@@ -567,38 +598,41 @@ svg-extract -- Extract independent graphic files from SVG pictures
 %
 % Consequently, the total number of pages is read and only existing PDF~pages
 % are included, if both options \opt{inkscapeformat}|=|\val{pdf} and 
-% \opt{lastpage}|=|\val{true} are set. This is the default setting and can be
-% switched off with \opt{lastpage}|=|\val{false}. It's also possible to set the 
-% number of the last page included of a PDF~graphic manually as optional
-% parameter for \cs{includesvg} or \cs{includeinkscape}. For details, see the
-% description of the respective commands.
+% \opt{lastpage}|=|\val{true} are set. This is the default setting 
+% (unless DVI~output is active) and can be switched off with 
+% \opt{lastpage}|=|\val{false}. It's also possible to set the number of the 
+% last page included of a PDF~graphic manually as optional parameter for 
+% \cs{includesvg} or \cs{includeinkscape}. For details, see the description of 
+% the respective commands.
 %
 %
 %
 % \subsection{Including SVG~files}
 %
-% \DescribeMacro{\includesvg}
+% \DescribeMacro{\includesvg}^^A
 % The command \cs{includesvg} to include a SVG~file is quite similar to the 
 % \cs{includegraphics} command provided by the \pkg{graphicx} package.
 % \begin{svgexample}
-%   \includesvg§\oarg{parameters}\marg{svg filename}§
+%   \includesvg§\oarg{parameters}\marg{svg~filename}§
 % \end{svgexample}
 %
-% \begin{DescribeParameterParent}{Macro}{\includesvg}
-% \DescribeParameters{%
-%   inkscape,inkscapeformat,inkscapelatex,inkscapearea,inkscapedpi,inkscapeopt,%
-%   svgextension,width,height,distort,scale,pretex,apptex,draft,%
-% }
-% It is used right in the same way but where \marg{svg filename} is the 
+% \begin{DescribeParameterParent}{Macro}{\includesvg}^^A
+% \DescribeParameters{inkscape,inkscapeformat,inkscapelatex,inkscapearea,^^A
+%   inkscapedpi,inkscapeopt,svgextension,width,height,distort,scale,^^A
+%   pretex,apptex,draft}^^A
+% It is used right in the same way but where \meta{svg~filename} is the 
 % file~name of the SVG~file, where any given file~extension will be replaced
 % with \file{.svg} ruthlessly. In order to change the source file format for 
 % the \app{Inkscape} export, you have to use parameter \prm{svgextension}.
 %
 % If the given file is not located in the current working directory but
 % elsewhere on your file~system, the command \cs{svgpath} could be used to
-% specify this path. It is recommended to avoid any spaces and/or quotes
-% respectively \cs{dq} both in paths an file~names. Espacially when DVI~output
-% is active using quotes will certainly cause an error. 
+% specify this path. 
+% \ToDo{reference to general note at the very beginning instead}[v2.03]^^A
+% It is recommended to avoid umlauts or any other Non\hbox{-}ASCII characters
+% as well as any spaces and/or quotes respectively \cs{dq} both in paths and
+% file~names. Especially when DVI~output is active using quotes will certainly
+% cause an error. 
 %
 % The command \cs{includesvg} is intended to do an automated export with 
 % \app{Inkscape} at first, where the given SVG~file is exported to a
@@ -607,19 +641,19 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % invoked, if the SVG~file is newer than the exported graphic~file or latter 
 % doesn't exist at all. Once the export has been done, the graphic~file and
 % maybe the \LaTeX~file are included.
-% 
+%
 % All previously described options can also be used as optional parameters to 
 % \cs{includesvg} and do have the same effect as described before. However, the 
 % optional parameters specified have an effect only once when \cs{includesvg}
 % is executed and remain unchanged afterwards.
 %
-% \DescribeParameter{lastpage}
+% \DescribeParameter{lastpage}^^A
 % In addition to the use of boolean values, the parameter \prm{lastpage} can 
 % also be assigned a specific (integer) page number, which defines the last
 % used page of a PDF~graphic. This, just like the identically named option, has 
 % an effect only when \prm{inkscapeformat}|=|\val{pdf} is set.
 %
-% \DescribeParameters{angle,origin}
+% \DescribeParameters{angle,origin}^^A
 % Both parameters correlate to the identically named parameters of the  
 % \cs{includegraphics} command provided by the \pkg{graphicx} package. However,
 % unlike to \cs{includegraphics}, they \prm{angle} and \prm{origin} are
@@ -633,20 +667,18 @@ svg-extract -- Extract independent graphic files from SVG pictures
 %
 % \subsection{Including already exported SVG~files}
 %
-% \DescribeMacro{\includeinkscape}
+% \DescribeMacro{\includeinkscape}^^A
 % If you don't want to make use of the automated export with \app{Inkscape} but 
 % the user\hbox{-}interface provided by the \pkg{svg} package, you can use 
 % \cs{includeinkscape} instead of \cs{includesvg}.  
 % \begin{svgexample}
-%   \includeinkscape§\oarg{parameters}\marg{graphic filename}§
+%   \includeinkscape§\oarg{parameters}\marg{graphic~filename}§
 % \end{svgexample}
 %
-% \begin{DescribeParameterParent}{Macro}{\includeinkscape}
-% \DescribeParameters{%
-%   inkscapeformat,inkscapelatex,%
-%   width,height,distort,scale,pretex,apptex,draft,lastpage,angle,origin,%
-% }
-% You can use it similar to \cs{includesvg} but \marg{graphic filename} has to 
+% \begin{DescribeParameterParent}{Macro}{\includeinkscape}^^A
+% \DescribeParameters{inkscapeformat,inkscapelatex,width,height,distort,^^A
+%   scale,pretex,apptex,draft,lastpage,angle,origin}^^A
+% You can use it similar to \cs{includesvg} but \meta{graphic~filename} has to 
 % be the filename of the already exported graphic file. If a valid 
 % file~extension (\file{.pdf/.eps/.ps/.png}) is given, the current setting for 
 % \opt{inkscapeformat} is overwritten. It's even possible to specify a 
@@ -668,13 +700,13 @@ svg-extract -- Extract independent graphic files from SVG pictures
 %
 % In order to extract to PDF, EPS, or PS~files the programs \file{pstoeps}, 
 % \file{pstopdf} and \file{pdftops} are used which are usually provided by most 
-% of the \LaTeXe~distributions. In additon, the command~line~interfaces of 
+% of the \LaTeX~distributions. In additon, the command~line~interfaces of 
 % \app{ImageMagick} and \app{Ghostscript} can be invoked for converting images 
 % in formats like PNG, JPG, TIF or something else. It's also possible to create 
 % PDF, EPS or PS~files with one of the two programs. Therefor the desired 
 % program---\file{magick} and/or \file{gswin32c}/\file{gswin64c} on Windows 
 % respectively \file{convert} and/or \file{gs} on unix-like operating 
-% systems---must be installed. By typing \file{\meta{program} -{}-version} on 
+% systems---must be installed. By typing \file{\meta{program}~-{}-version} on 
 % shell, this can be checked.
 %
 % If you want to extract independent graphic~files from included SVG~files, you 
@@ -688,7 +720,7 @@ svg-extract -- Extract independent graphic files from SVG pictures
 %
 % In contrast to package \pkg{svg}, the console commands for graphic extraction 
 % are executed with each LaTeX run by package \pkg{svg-extract} when 
-% \file{-{}-shell-escape} mode is activated. This behaviour can be switched of 
+% \file{-{}-shell-escape} mode is activated. This behaviour can be switched off 
 % with option \opt{extract}|=|\val{false}.
 %
 % \minisec{Important changes}
@@ -699,13 +731,13 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % different \LaTeX~packages which all provide the possibility to include
 % subfigures with very different implemetations, this feature can't be provided
 % reliably by \pkg{svg-extract}. See option \opt{extractname} for further 
-% information. 
+% information.
 %
 %
 %
 % \subsection{General settings}
 %
-% \DescribeOptions{on,off}
+% \DescribeOptions{on,off}^^A
 % This options have to be given while loading the \pkg{svg-extract} package and 
 % are intended to toggle the functionality of this package. As both extracting 
 % and converting independent graphic~files is invoked with every \LaTeX~run 
@@ -715,80 +747,76 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % used to reactivate functionality of this package. This can also be done by 
 % using \opt{extract}|=|\val{true}/\val{false}.
 %
-% \DescribeMacros{\svgsetup,\includesvg,\includeinkscape}
+% \DescribeMacros{\svgsetup,\includesvg,\includeinkscape}^^A
 % With package \pkg{svg-extract} the applicable options for 
 % \cs{svgsetup}\marg{options} as well as parameters for the already described
-% macros \cs{includesvg}\oarg{parameters}\marg{filename} and 
-% \cs{includeinkscape}\oarg{parameters}\marg{filename} are extended. They can
-% be used to control the process of graphic extraction and converting.
-%
-% \begin{DescribeParameterParent}{Macro}{\includesvg}
-% \DescribeParameters{extractangle}
-% With this parameter the graphic is rotated during the extraction process. The 
-% value is not inherited from \prm{angle} if it was given by default. this can 
-% be achieved by setting:
-% \begin{svgexample}
-%   \includesvg[angle=§\meta{angle}§,extractangle=inherit]§\marg{filename}§
-% \end{svgexample}
-% \end{DescribeParameterParent}
+% macros \cs{includesvg}\oarg{parameters}\marg{svg~filename} and 
+% \cs{includeinkscape}\oarg{parameters}\marg{graphic~filename} are extended. 
+% They can be used to control the process of graphic extraction and converting.
 %
 % All option described below can be used togehter with \cs{svgsetup} and are
 % then valid in the current scope. There also exist identically named 
 % parameters for the optional arguments of 
 % \begin{svgexample}
-%   \includesvg§\oarg{parameters}\marg{svg filename}§
-%   \includeinkscape§\oarg{parameters}\marg{graphic filename}§
+%   \includesvg§\oarg{parameters}\marg{svg~filename}§
+%   \includeinkscape§\oarg{parameters}\marg{graphic~filename}§
 % \end{svgexample}
-% These parameters have an effect only once when the specific command is 
-% executed and remain unchanged afterwards.
-% \begingroup\ignorespaces%
-% \newcommand*\parameterlist{}\ignorespaces%
-% \listadd\parameterlist{extract}\ignorespaces%
-% \listadd\parameterlist{extractpreamble}\ignorespaces%
-% \listadd\parameterlist{extractformat}\ignorespaces%
-% \listadd\parameterlist{extractruns}\ignorespaces%
-% \listadd\parameterlist{latexopt}\ignorespaces%
-% \listadd\parameterlist{extractwidth}\ignorespaces%
-% \listadd\parameterlist{extractheight}\ignorespaces%
-% \listadd\parameterlist{extractdistort}\ignorespaces%
-% \listadd\parameterlist{extractscale}\ignorespaces%
-% \listadd\parameterlist{extractangle}\ignorespaces%
-% \listadd\parameterlist{extractpretex}\ignorespaces%
-% \listadd\parameterlist{extractapptex}\ignorespaces%
-% \listadd\parameterlist{convert}\ignorespaces%
-% \listadd\parameterlist{convertformat}\ignorespaces%
-% \listadd\parameterlist{convertdpi}\ignorespaces%
-% \listadd\parameterlist{magicksetting}\ignorespaces%
-% \listadd\parameterlist{magickoperator}\ignorespaces%
-% \listadd\parameterlist{gsopt}\ignorespaces%
-% \listadd\parameterlist{gsdevice}\ignorespaces%
-% \listadd\parameterlist{clean}\ignorespaces%
-% \listadd\parameterlist{exclude}\ignorespaces%
-% \def\buffer{}\def\do#1{\buffer\prm{#1}\def\buffer{, }}\ignorespaces%
-% These parameters are: \dolistloop{\parameterlist}.
-% \renewcommand*\marginpar[2][]{}\ignorespaces%
-% \def\do#1{\DescribeParameter{#1}}\ignorespaces%
-% \begin{DescribeParameterParent}{Macro}{\includesvg}%
-% \dolistloop{\parameterlist}%
-% \end{DescribeParameterParent}%
-% \begin{DescribeParameterParent}{Macro}{\includeinkscape}%
-% \dolistloop{\parameterlist}%
-% \end{DescribeParameterParent}%
-% \endgroup%
-%
-%
-%
-% \subsection{Extract independent grahic files}\label{sec:extract}
-% \DescribeOption{extract}
+% These have an effect only once, when the specific command is executed.
+%^^A \begingroup^^A
+%^^A \newcommand*\parameterlist{}^^A
+%^^A \listadd\parameterlist{extract}^^A
+%^^A \listadd\parameterlist{extractpreamble}^^A
+%^^A \listadd\parameterlist{extractformat}^^A
+%^^A \listadd\parameterlist{extractwidth}^^A
+%^^A \listadd\parameterlist{extractheight}^^A
+%^^A \listadd\parameterlist{extractdistort}^^A
+%^^A \listadd\parameterlist{extractscale}^^A
+%^^A \listadd\parameterlist{extractangle}^^A
+%^^A \listadd\parameterlist{extractpretex}^^A
+%^^A \listadd\parameterlist{extractapptex}^^A
+%^^A \listadd\parameterlist{extractruns}^^A
+%^^A \listadd\parameterlist{latexexe}^^A
+%^^A \listadd\parameterlist{latexopt}^^A
+%^^A \listadd\parameterlist{latexext}^^A
+%^^A \listadd\parameterlist{dvipsopt}^^A
+%^^A \listadd\parameterlist{pstoepsopt}^^A
+%^^A \listadd\parameterlist{pstopdfopt}^^A
+%^^A \listadd\parameterlist{pdftoepsopt}^^A
+%^^A \listadd\parameterlist{pdftopsopt}^^A
+%^^A \listadd\parameterlist{convert}^^A
+%^^A \listadd\parameterlist{convertformat}^^A
+%^^A \listadd\parameterlist{convertdpi}^^A
+%^^A \listadd\parameterlist{magicksetting}^^A
+%^^A \listadd\parameterlist{magickoperator}^^A
+%^^A \listadd\parameterlist{gsopt}^^A
+%^^A \listadd\parameterlist{gsdevice}^^A
+%^^A \listadd\parameterlist{clean}^^A
+%^^A \listadd\parameterlist{exclude}^^A
+%^^A \def\buffer{}\def\do#1{\buffer\prm{#1}\def\buffer{, }}^^A
+%^^A These parameters are: \dolistloop{\parameterlist}.
+%^^A \renewcommand*\marginpar[2][]{}^^A
+%^^A \def\do#1{\DescribeParameter{#1}}^^A
+%^^A \begin{DescribeParameterParent}{Macro}{\includesvg}^^A
+%^^A \dolistloop{\parameterlist}^^A
+%^^A \end{DescribeParameterParent}^^A
+%^^A \begin{DescribeParameterParent}{Macro}{\includeinkscape}^^A
+%^^A \dolistloop{\parameterlist}^^A
+%^^A \end{DescribeParameterParent}^^A
+%^^A \endgroup^^A
+%
+%
+%
+% \subsection{Extract independent grahic files\label{sec:extract}}
+%
+% \DescribeOption{extract}^^A
 % This option can be used with boolean values. Using \opt{extract}|=|\val{true}
 % activates the functionality for both extracting and converting which is the 
 % default setting, whereas \opt{extract}|=|\val{false} turns it off completely.
 %
-% \DescribeOption{extractpath}
+% \DescribeOption{extractpath}^^A
 % The path where the extracted and converted files are located can be specified 
-% with option \opt{extractpath}, whereas \opt{extractpath}|=|\val{basesubdir}
-% is set by default.
-% \begin{DescribeValues}
+% with option \opt{extractpath}, whereas \default{basesubdir} is set by default.
+% \begin{DescribeValues}^^A
 % \item[svgdir/svgpath]
 %   The extracted and converted independent graphic~files are located in the 
 %   same directory as the corresponding SVG~file.
@@ -798,7 +826,7 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % \item[basedir/basepath/jobdir/jobpath]
 %   All extracted and converted files will be located in the current working 
 %   directory.
-% \item[\textbf{basesubdir}/basesubpath/jobsubdir/jobsubpath]
+% \item[\default{basesubdir}/basesubpath/jobsubdir/jobsubpath]
 %   A subfolder named \file{svg-extract/} within the current working directory 
 %   will be used for all extracted and converted files.
 % \item[/path/to/somewhere/]
@@ -806,58 +834,57 @@ svg-extract -- Extract independent graphic files from SVG pictures
 %   working directory (\file{./relative/path/}) or as an absolute path.
 % \end{DescribeValues}
 %
-% \DescribeOption{extractname}
+% \DescribeOption{extractname}^^A
 % It's also possible to change the name for extracted and converted files. The 
-% default setting is \opt{extractname}|=|\val{filenamenumbered}.
-% \begin{DescribeValues}
+% default setting is \opt{extractname}|=|\val{filenamenumbered}. The appended 
+% file extension is derived from option \opt{extractformat}.
+% \begin{DescribeValues}^^A
 % \item[filename/name]
 %   The name of the exported \app{Inkscape}~file is used and the suffix
 %   \file{-extract} is attached.
-% \item[\textbf{filenamenumbered}/namenumbered/numberedfilename/numberedname]
-%   Same as above, but a prefix with the count of extracted files is used
-%   instead of the suffix.
+% \item[\default{filenamenumbered}/namenumbered/numberedfilename/numberedname]
+%   Same as above, but a prefix with the current enumerated count of SVG~files
+%   is used instead of the suffix.
 % \item[numbered/section/numberedsection/sectionnumbered]
-%   The file name is composed by the number of extracted files and the current 
-%   outline numbering.
-% \item[\meta{filename}]
-%   You can use any file name, the file extension is derived from option 
-%   \opt{extractformat}. It's possible to use counters for specifying the 
+%   The file name is composed by the current enumerated count of SVG~files and 
+%   the present outline numbering.
+% \item[\file{\meta{filename}}]
+%   You can use any file name. It's possible to use counters for specifying the 
 %   name of the extracted file. Repeatedly specifying the same file name will
 %   overwrite previously created files. 
 % \end{DescribeValues}
 %
-% \DescribeOption{extractformat}
-% The included SVG~file can be extracted from the document into a independent
+% \DescribeOption{extractformat}^^A
+% The included SVG~file can be extracted from the document into an independent
 % graphic~file of type PDF, EPS or PS. The option can be used with either a
 % single value (\opt{extractformat}|=|\val{pdf}) or a comma separated list. 
 % For example,
 % \begin{svgexample}
-%   \includesvg[extractformat={pdf,eps,ps}]§\marg{svg filename}§
+%   \includesvg[extractformat={pdf,eps,ps}]§\marg{svg~filename}§
 % \end{svgexample}
 % will extract the SVG~file to both PDF and EPS~formats and generates two 
 % independent graphic~files. By default, \opt{extractformat}|=|\val{pdf} is set 
 % unless DVI~output was detected. In this case \opt{extractformat}|=|\val{eps} 
 % is the default setting.
 %
-% \DescribeOptions{%
-%   extractwidth,extractheight,extractdistort,extractscale,
-%   extractpretex,extractapptex,%
-% }
+% \DescribeOptions{extractwidth,extractheight,extractdistort,extractscale,^^A
+%   extractpretex,extractapptex}^^A
+% \changes{v2.02}{2018/09/07}{option \opt{extractdistort} added for distortion 
+%   of extracted graphics}^^A
 % These options can be used to overwrite the settings given for the appearance 
 % of a SVG~file within the document. For example, a SVG~file should cover the 
-% entire text width within the document but be extracted to a fixed width, this 
+% entire text width within the document but be extracted to a fixed width. This 
 % can be done with:
 % \begin{svgexample}
-%   \includesvg[width=\textwidth,extractwidth=500pt]§\marg{svg filename}§
+%   \includesvg[width=\textwidth,extractwidth=500pt]§\marg{svg~filename}§
 % \end{svgexample}
 % Assigning the value \val{inherit} to one of these options---which is set by 
 % default---leads to the usage of the corresponding option of package \pkg{svg} 
 % (\opt{width}/\opt{height}/\opt{scale}/\opt{pretex}/\opt{apptex}), whereas
 % \opt{extract\dots}|=|\val{\cs{relax}} can be used to ignore a parent option
-% utterly. Only option \opt{extractdistort} is initialized to \val{false} and
-% does not inherit from \opt{distort} by default.
+% utterly.
 %
-% \DescribeOptions{extractpreamble,extractpreambleend}
+% \DescribeOptions{extractpreamble,extractpreambleend}^^A
 % Within the included and extracted SVG~files any \LaTeX~macro can be used 
 % either defined by the user---this should be done in the preamble of the 
 % \LaTeX~document in which the SVG~file is to be included---or provided by a 
@@ -865,7 +892,7 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % auxiliary \LaTeX~file all used packages and commands have to be known within 
 % this file. Consequently, the preamble of the current \LaTeX~document is used 
 % for the extraction of the SVG~file by default.
-% 
+%
 % However, it is possible to specify a different \emph{preamble~file} with the 
 % option \opt{extractpreamble} where the file to use as the preamble is given
 % as the argument---including maybe path, but file~name and file~extension in 
@@ -877,7 +904,7 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % option \opt{extractpreambleend} will be used, which is set to a default with
 % \cs{begin}|{document}|. 
 %
-% \DescribeMacros{\svghidepreamblestart,\svghidepreambleend}
+% \DescribeMacros{\svghidepreamblestart,\svghidepreambleend}^^A
 % In case, the preamble of the current \LaTeX~document is used, there are maybe 
 % packages included or some parts within the preamble, which should not be used
 % within the separate auxiliary \LaTeX~file. These parts can be excluded if
@@ -897,33 +924,33 @@ svg-extract -- Extract independent graphic files from SVG pictures
 %   §\dots§
 % \end{svgexample}
 %
-% \DescribeOption{extractruns}
+% \DescribeOption{extractruns}^^A
 % When extracting independent grahic~files by compiling the generated auxiliary 
-% \LaTeX~file, it's maybe necessary to do multiple \LaTeX~runs on this file. 
-% The number of runs can be controlled with option \opt{extractruns}. It's set
-% to \opt{extractruns}|=|\val{2} by default.
+% \LaTeX~file, it's maybe necessary to do multiple \LaTeX~iterations on this. 
+% The number of iterations is controlled with option \opt{extractruns}. It is 
+% set to \opt{extractruns}|=|\val{2} by default.
 %
-% \DescribeOptions{latexexe,latexopt,latexext}
+% \DescribeOptions{latexexe,latexopt,latexext}^^A
 % For the extraction of an independent grahic~file, the \LaTeX~program is used
 % which is set by the \opt{latexexe} option. Depending on the \LaTeX~engine 
 % used for the current \LaTeX~document, it is set to either \app{pdflatex}, 
 % \app{lualatex}, \app{xelatex} or \app{latex} by default. It's also possible
-% to specify additional flags or switches for the \LaTeX~runs, which are
+% to specify additional flags or switches for the \LaTeX~iterations, which are
 % performed during the extraction process by the \opt{latexopt} option. If you
-% are used to utilize a other file~extension for \LaTeX~files than \file{.tex}, 
+% are used to utilize a different extension for \LaTeX~files than \file{.tex}, 
 % option \opt{latexext} can be used like \opt{latexext}|=|\val{ltx}.
 %
-% \DescribeOptions{dvipsopt,pstoepsopt,pstopdfopt,pdftoepsopt,pdftopsopt}
+% \DescribeOptions{dvipsopt,pstoepsopt,pstopdfopt,pdftoepsopt,pdftopsopt}^^A
 % Depending on the used \LaTeX~engine, the file~type of the extracted 
 % graphic differs. In order to create all formats, requested with option
 % \opt{extractformat}, several converting tools provided by most of the 
-% \LaTeXe~distributions are maybe invoked. These are \file{dvips},
+% \LaTeX~distributions are maybe invoked. These are \file{dvips},
 % \file{ps2eps}, \file{ps2pdf} and/or \file{pdftops} and can't be changed. It's
 % only possible to specify additional switches for every single tool with
 % \opt{dvipsopt}, \opt{pstoepsopt}, \opt{pstopdfopt}, \opt{pdftoepsopt} and
 % \opt{pdftopsopt}.
 %
-% \DescribeOption{clean}
+% \DescribeOption{clean}^^A
 % During the extraction process many files are generated for each SVG~file 
 % extraction. So it's oftentimes desirable to automatically remove these 
 % temporary files. Using the option \opt{clean}|=|\val{true} will remove any 
@@ -933,28 +960,51 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % file~extensions in order to specify auxiliary files generated by package 
 % \pkg{svg-extract} to be deleted, for example \opt{clean}|=|\val{\{log,aux\}}.
 %
-% \DescribeOption{exclude}
+% \DescribeOption{exclude}^^A
 % Sometimes it may be necessary to extract and/or convert a SVG~file without 
 % including it. If the flag \opt{exclude} is specified, the SVG~file will not 
 % be rendered in the current \LaTeX~document, but will be extracted and/or
 % converted to the requested output format(s).
 %
+% \DescribeMacros{\includesvg,\includeinkscape}^^A
+% As previously mentioned, for extracting independent graphic files it is
+% sufficient to load package \pkg{svg-extract} and afterwards everything 
+% necassary is done by just using \cs{includesvg} or \cs{includeinkscape}.
+%
+% \begin{DescribeParameterParent}{Macro}{\includesvg}^^A
+% \DescribeParameter{extractangle}^^A
+% \begin{DescribeParameterParent}{Macro}{\includeinkscape}^^A
+% \renewcommand*\marginpar[2][]{}^^A
+% \DescribeParameter{extractangle}^^A
+% \changes{v2.02}{2018/09/07}{parameter \prm{extractangle} for \cs{includesvg}
+%   and \cs{includeinkscape} implemented in order to rotate graphics during 
+%   extractions}^^A
+% With this additional parameter the graphic is rotated during the extraction 
+% process. The value is not inherited from \prm{angle} if it was given by 
+% default. This can be achieved by setting:
+% \begin{svgexample}
+%   \includesvg[angle=§\meta{angle}§,extractangle=inherit]§\marg{svg~filename}§
+% \end{svgexample}
+% \end{DescribeParameterParent}
+% \end{DescribeParameterParent}
+%
+%
 %
+% \subsection{Convert extracted grahic files\label{sec:convert}}
 %
-% \subsection{Convert extracted grahic files}\label{sec:convert}
-% 
 % Based on the extraction of independent graphic~files, the \pkg{svg-extract} 
-% packages also provides the possibility to convert those extracted graphics in 
+% packages also provides the possibility to convert these extracted graphics in 
 % another format than PDF, EPS or PS with either \app{ImageMagick}---which is 
 % set by default---or \app{Ghostscript}.
 %
-% \DescribeOption{convert}
+% \DescribeOption{convert}^^A
 % This option can be used to control the invocation of the conversion process. 
 % By default, \opt{convert}|=|\val{false} is set. For Windows, there exist two 
 % different versions of \app{Ghostscript}, either 64\,bit or 32\,bit. If 
 % it is selected as converting tool the 64\,bit~executable is set by default.
-% \begin{DescribeValues}
-% \item[\textbf{false}/off/no]
+% Please note, that option \opt{extract} has to be activated.
+% \begin{DescribeValues}^^A
+% \item[\default{false}/off/no]
 %   No conversion is done.
 % \item[true/on/yes]
 %   The conversion will be done with the current chosen converting tool. 
@@ -970,8 +1020,8 @@ svg-extract -- Extract independent graphic files from SVG pictures
 %   The same as for the latter case applies, only option
 %  \opt{gsexe}|=|\val{gswin32c} is set on Windows.
 % \end{DescribeValues}
-% 
-% \DescribeOption{convertformat}
+%
+% \DescribeOption{convertformat}^^A
 % With this option, the desired output format(s) can be given. Multiple graphic 
 % formats can be specified in a list, for example something like 
 % \opt{convertformat}|=|\val{\{png,jpg,tif\}}. The value specified in 
@@ -993,7 +1043,7 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % desired output~format is trailed with |+| as inner key.
 %
 % The first variant is applied to all output formats in general. If one of
-% these mentioned options is evaluated and a output format specific value was
+% these mentioned options is evaluated and an output format specific value was
 % given like in the second variant, the general setting is overwritten. If the 
 % general setting should be used and extended by an additional output format
 % specific settings, then the third variant is to be used. In this case, no 
@@ -1004,7 +1054,7 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % or a specific one 
 % (\opt{\meta{option}}|=|\val{\{\meta{outputformat}[+]=\cs{relax}\}}).
 %
-% \DescribeOption{convertdpi}
+% \DescribeOption{convertdpi}^^A
 % This option controls the used density for all file~formats or a specific one,
 % whether \app{ImageMagick} or \app{Ghostscript} is used for the graphic 
 % conversion. The desired resolution of the converted file is given in dots per
@@ -1033,9 +1083,10 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % the used conversion tool and not to the processing of the option.
 %
 %
+%
 % \subsubsection{Settings for the invocation of \app{ImageMagick}}
 %
-% \DescribeOptions{magickexe,magicksetting,magickoperator}
+% \DescribeOptions{magickexe,magicksetting,magickoperator}^^A
 % The conversion with \app{ImageMagick} via the \file{magick} or \file{convert} 
 % command~line~interface can be controlled with these options. The option
 % \opt{magickexe} determines the used executable and is set to \file{magick} on
@@ -1046,13 +1097,14 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % \opt{magickoperator} can be set for all output formats or a \emph{specific}
 % one either resetting or extending the general settings. For further 
 % information see the documentation of 
-% \hrfn{http://www.imagemagick.org/script/command-line-processing.php}%
+% \hrfn{http://www.imagemagick.org/script/command-line-processing.php}^^A
 % {\app{ImageMagick} command~line~interface}.
 %
 %
+%
 % \subsubsection{Settings for the invocation of \app{Ghostscript}}
 %
-% \DescribeOptions{gsexe,gsdevice,gsopt}
+% \DescribeOptions{gsexe,gsdevice,gsopt}^^A
 % The conversion with \app{Ghostscript} is done with command~line~interface 
 % \file{gswin64c} or \file{gswin32c} on Windows and \file{gs} on unix-like 
 % operating systems. The executable can be changed with option \opt{gsexe}.
@@ -1073,14 +1125,14 @@ svg-extract -- Extract independent graphic files from SVG pictures
 %
 %
 %
+% \cleardoublepage
 % \section{Example}
 %
-% As an minimal example\footnote{\ignorespaces%
-%   The image used here is a slightly modified version of the image used in the
-%   initial documentation on how to include a SVG~file in \LaTeX{} by 
-%   Johan\,B.\,C.~Engelen available as package 
-%   \href{http://www.ctan.org/pkg/svg-inkscape}{\pkg{svg-inkscape} on CTAN}.
-% } take the following lines of code:
+% As an minimal example\footnote{The image used here is a slightly modified 
+%   version of the image used in the initial documentation on how to include a 
+%   SVG~file in \LaTeX{} by Johan\,B.\,C.~Engelen available as package 
+%   \href{http://www.ctan.org/pkg/svg-inkscape}{\pkg{svg-inkscape} on CTAN}.}
+% take the following lines of code:
 % \begin{svgexample}
 %   \documentclass{article}
 %   \usepackage[T1]{fontenc}
@@ -1092,58 +1144,59 @@ svg-extract -- Extract independent graphic files from SVG pictures
 %   \usepackage{subcaption}
 %   \begin{document}
 %   \begin{figure}
-%     \begin{minipage}{.5\linewidth}
+%     \begin{minipage}{\dimexpr\linewidth/2\relax}
 %       \includesvg[width=\linewidth]{svg-example}%
-%       \subcaption{This text is too large!}
+%       \subcaption{This text is too large!}%
 %     \end{minipage}%
-%     \begin{minipage}{.5\linewidth}
+%     \begin{minipage}{\dimexpr\linewidth/2\relax}
 %       \includesvg[width=\linewidth,pretex=\relscale{0.6}]{svg-example}%
-%       \subcaption{This text fits better.}
+%       \subcaption{This text fits better.}%
 %     \end{minipage}
-%   \caption{An example figure with \LaTeX~support}\label{fig:example}
+%   \caption{An example figure with \LaTeX~support\label{fig:example}}%
 %   \end{figure}
 %   \begin{figure}\centering
 %     \includesvg[%
 %       width=.5\linewidth,inkscapelatex=false,extractformat={pdf,eps}%
 %     ]{svg-example}%
-%     \caption{The same example figure without \LaTeX~support}
+%     \caption{The same example figure without \LaTeX~support}%
 %   \end{figure}
 %   \end{document}
 % \end{svgexample}
 % \begin{figure}[tb]
-%   \null\hfill\ignorespaces%
-%   \begin{minipage}{.45\linewidth}
-%     \includesvg[width=\linewidth]{svg-example}%
-%     \subcaption{This text is too large!}\label{fig:example-tex-a}
-%   \end{minipage}\hfill\ignorespaces%
-%   \begin{minipage}{.45\linewidth}
-%     \includesvg[width=\linewidth,pretex=\relscale{0.6}]{svg-example}%
-%     \subcaption{This text fits better.}\label{fig:example-tex-b}
+%   \null\hfill^^A
+%   \begin{minipage}{\dimexpr\linewidth*9/20\relax}
+%     \includesvg[width=\linewidth]{svg-example}^^A
+%     \subcaption{This text is too large!\label{fig:example-tex-a}}^^A
+%   \end{minipage}\hfill^^A
+%   \begin{minipage}{\dimexpr\linewidth*9/20\relax}
+%     \includesvg[width=\linewidth,pretex=\relscale{0.6}]{svg-example}^^A
+%     \subcaption{This text fits better.\label{fig:example-tex-b}}^^A
 %   \end{minipage}
-%   \hfill\null\ignorespaces%
-%   \caption{An example figure with \LaTeX~support}\label{fig:example-tex}
+%   \hfill\null^^A
+%   \caption{An example figure with \LaTeX~support\label{fig:example-tex}}^^A
 % \end{figure}
 % \begin{figure}[tb]\centering
-%   \includesvg[%
-%     width=.5\linewidth,inkscapelatex=false,extractformat={pdf,eps}%
-%   ]{svg-example}%
-%   \caption{The same example figure without \LaTeX~support}\label{fig:example}
+%   \includesvg[^^A
+%     width=.5\linewidth,inkscapelatex=false,extractformat={pdf,eps}^^A
+%   ]{svg-example}^^A
+%   \caption{^^A
+%     The same example figure without \LaTeX~support\label{fig:example}^^A
+%   }^^A
 % \end{figure}
 %
-% If you are willing to compile the example, there are two aspects to consider. 
-% First, the included SVG~file \file{svg-example.svg} has to be located in the 
-% current folder and is located in \file{\meta{texmf}/doc/latex/svg/examples/}. 
-% Second, you have to run the desired \LaTeX~engine with 
-% \file{-{}-shell-escape} option enabled. 
-%
 % The output is shown in \autoref{fig:example-tex} and \autoref{fig:example}. 
 % Within this example the file \file{svg-example.svg} was included three times 
 % using the \cs{includesvg} command.
-% 
+%
+% If you are willing to compile the example, there are two aspects to consider. 
+% First, the included SVG~file \file{svg-example.svg} has to be located in the 
+% current folder and is located in \file{\meta{texmf}/doc/latex/svg/}. Second, 
+% you have to run the desired \LaTeX~engine with flag \file{-{}-shell-escape}. 
+%
 % As you can see, \autoref{fig:example-tex-a} is created with default settings, 
-% except for the width specification. So the \app{Inkscape}~export with
-% \LaTeX~support is done as well as the extraction of a independent graphic~file
-% in PDF~format as the \pkg{svg-extract} package was loaded. 
+% except the width specification. The \app{Inkscape}~export with \LaTeX~support 
+% is done and the extraction of an independent graphic~file in PDF~format as 
+% the \pkg{svg-extract} package was loaded. 
 %
 % However, the text is slightly overrunning the margins of the image, and so 
 % \autoref{fig:example-tex-b}---which again uses the same \app{Inkscape}~export 
@@ -1177,7 +1230,7 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % |Package svg Info:| or |Package svg-extract Info:|
 % \end{quote}
 % Right afterwards, there should appear |runsystem(<command>)...excuted.| which 
-% you should try to execute manually from terminal in the right directory. In 
+% you should try to execute manually at the terminal in the right directory. In 
 % most cases, the problem will be an invalid command call. If something goes
 % wrong during the extraction/converting process of package \pkg{svg-extract},
 % it would make sense to set option \opt{clean}|=|\val{false} to not delete any 
@@ -1190,9 +1243,9 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % \minisec{When using pdf\LaTeX{} there are a lot of warnings}
 %
 % It may happen that several warnings like
-% \begin{quote}\ttfamily\raggedright%
+% \begin{quote}\ttfamily\raggedright^^A
 % pdfTeX warning:\,pdflatex.exe(file \meta{filename}.pdf):\,PDF inclusion:
-% multiple pdfs with page group included in a single page
+% multiple pdfs with page group included in a single page^^A
 % \end{quote}
 % occur when including the PDF~graphics exported with \app{Inkscape}. This is 
 % related to the handling of transparency effects within PDF~files. Since
@@ -1206,7 +1259,7 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % \section{Include SVG files created with \app{ROOT}}
 %
 % This section was originally written by Philip Ilten. In the hope that since 
-% then nothing has changed fundamentally in the described procedure, this 
+% then nothing has changed fundamentally in the described procedure. This 
 % passage remains in the documentation, even if it will almost certainly be 
 % relevant to experimental particle physicists only, who frequently use the
 % analysis package \app{ROOT}.
@@ -1257,7 +1310,7 @@ svg-extract -- Extract independent graphic files from SVG pictures
 %
 % Consider the following example image produced by \app{ROOT} in 
 % \autoref{fig:root}. This figure was generated by the \app{ROOT} macro
-% \file{root.C}, provided within \file{\meta{texmf}/doc/latex/svg/examples/},
+% \file{root.C}, provided within \file{\meta{texmf}/doc/latex/svg/},
 % which produces the file~\file{root.svg} when run. The code used to produce
 % this SVG~file from within \app{ROOT} is
 % \lstinputlisting[style=svg,backgroundcolor=\color{red!10}]{examples/root.C} 
@@ -1272,27 +1325,35 @@ svg-extract -- Extract independent graphic files from SVG pictures
 %     \includesvg[%
 %       inkscapearea=page,height=6cm,pretex=\tiny,convertformat=png%
 %     ]{root}%
-%     \caption{Rendering of a \app{ROOT} plot---no more \emph{Comic CERNs}}%
-%     \label{fig:root}%
+%     \caption{%
+%       Rendering of a \app{ROOT} plot---no more \emph{Comic CERNs}%
+%       \label{fig:root}%
+%     }%
 %   \end{figure}
 % \end{svgexample}
 % \begin{figure}
-%   \centering%
-%     \includesvg[%
-%       inkscapearea=page,height=6cm,pretex=\tiny,convertformat=png%
-%     ]{root}%
-%   \caption{Rendering of a \app{ROOT} plot---no more \emph{Comic CERNs}}%
-%   \label{fig:root}%
+%   \centering^^A
+%     \includesvg[^^A
+%       inkscapearea=page,height=6cm,pretex=\tiny,convertformat=png^^A
+%     ]{root}^^A
+%   \caption{^^A
+%     Rendering of a \app{ROOT} plot---no more \emph{Comic CERNs}
+%     \label{fig:root}^^A
+%   }^^A
 % \end{figure}
 % which includes the graphic as well as the \LaTeX~file exported by 
 % \app{Inkscape}, produces the extracted PDF~image~(\file{root.pdf}) and 
 % converts this to a PNG~image~(\file{root.png}) by using \app{ImageMagick}.
-% Enjoy plots from \app{ROOT} with natively rendered \LaTeX!
+% Enjoy plots from \app{ROOT} with natively rendered \LaTeX{}!
 %
-% \StopEventually{\clearpage\PrintIndex\PrintChanges\PrintToDos}
+% \StopEventually{^^A
+%   \cleardoublepage\PrintIndex^^A
+%   \cleardoublepage\PrintChanges^^A
+%   \cleardoublepage\PrintToDos^^A
+% }
 %
 % \iffalse
-%<*package&option>
+%<*package&base>
 % \fi
 %
 %
@@ -1303,66 +1364,553 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % \section{Initialization}
 % \subsection{Packages}
 %
-% The package \pkg{svg} requires package \pkg{iftex} for detecting the used 
-% \LaTeX~engine, \pkg{scrbase} for options processing, \pkg{pdftexcmds} for 
-% pdf\TeX{} primitives when using Lua\TeX, \pkg{shellesc} and \pkg{ifplatform}
-% for engine independent access to systems commands and files as well as
-% \pkg{graphicx} for the inclusion of PDF~files. The usage of packages
-% \pkg{xcolor} and \pkg{transparent} can be switched of with the corresponding
-% options. Package \pkg{svg-extract} only needs package \pkg{svg} itself.
+% The package \pkg{svg} mainly requires \pkg{scrbase} for options processing 
+% and \pkg{graphicx} for the inclusion of the exported graphic~files. 
+%
+% The packages \pkg{iftex} and \pkg{pdftexcmds} are needed to detect the used 
+% \LaTeX~engine on the one hand and enabling pdf\TeX{} primitives independent 
+% of the used \LaTeX~engine on the other hand. Additionally, \pkg{trimspaces} 
+% is responsible for string manipulation. Both packages \pkg{shellesc} and 
+% \pkg{ifplatform} are used for engine independent access to systems commands 
+% and files. The package \pkg{svg-extract} only needs package \pkg{svg} itself, 
+% which is loaded during initialization.
 %    \begin{macrocode}
-%<*base>
+%<*main>
 \RequirePackage{iftex}[2020/03/06]
 \RequirePackage{scrbase}[2020/04/19]
 \RequirePackage{pdftexcmds}[2019/11/24]
-\RequirePackage{shellesc}[2019/11/08]
 \RequirePackage{trimspaces}[2009/09/17]
 \RequirePackage{graphicx}[2019/11/30]
-%</base>
-%<*extract>
-\RequirePackage{svg}[2020/05/07]
-%</extract>
+\RequirePackage{shellesc}[2019/11/08]
+%    \end{macrocode}
+% In order to do not raise a warning, package \pkg{ifplatform} is only used if
+% \file{-{}-shell-escape} flag is enabled.
+%    \begin{macrocode}
+\ifnum\pdf@shellescape=\@ne\relax
+  \RequirePackage{ifplatform}[2017/10/13]
+\fi
+%</main>
+%    \end{macrocode}
+%
+%
+%
+% \subsection{Dealing with catcodes}
+%
+% The catcode for double quotes are temporarily changed and restored at the 
+% very end of both packages.
+%    \begin{macrocode}
+\edef\svg@catcodecodes@restore{%
+  \catcode`\noexpand\"\the\catcode`\"\relax%
+}
+\@makeother\"%
+\AtEndOfPackage{\svg@catcodecodes@restore}
 %    \end{macrocode}
 %
 % \iffalse
-%<*base>
+%<*main>
 % \fi
 %
-% \subsection{Helper macros}
+%
+%
+% \subsection{General macros}
 %
 % \begin{macro}{\svg@tempa}
 % \begin{macro}{\svg@tempb}
-% \begin{macro}{\svg@box}
 % \begin{macro}{\if@svg@tempswa}
-% Internal temporary macros. The catcode for double quotes are also temporarily 
-% changed.
+% Internal temporary macros.
 %    \begin{macrocode}
 \newcommand*\svg@tempa{}
 \newcommand*\svg@tempb{}
-\newbox\svg@box
 \newif\if@svg@tempswa
-\edef\svg@catcodecodes@restore{%
-  \catcode`\noexpand\"\the\catcode`\"\relax%
-}
-\@makeother\"%
 %    \end{macrocode}
 % \end{macro}^^A \if@svg@tempswa
-% \end{macro}^^A \svg@box
 % \end{macro}^^A \svg@tempb
 % \end{macro}^^A \svg@tempa
 %
+%
+%
+% \subsubsection{Macros for process control}
+%
+% \begin{macro}{\svg@ifwindowsdetected}
+% Do some Windows specific stuff if it was detected.
+%    \begin{macrocode}
+\newcommand*\svg@ifwindowsdetected{\@secondoftwo}
+\AfterPackage*{ifplatform}{%
+  \renewcommand*\svg@ifwindowsdetected{%
+    \ifwindows%
+      \expandafter\@firstoftwo%
+    \else%
+      \expandafter\@secondoftwo%
+    \fi%
+  }%
+}
+%    \end{macrocode}
+% \end{macro}^^A \svg@ifwindowsdetected
+% \begin{macro}{\svg@ifvalueisrelax}
+% For some keys the usage of \val{\cs{relax}} as a value should lead to a 
+% special reaction, such as restoring to default behavior or reseting the key.
+% Therefore, \cs{svg@ifvalueisrelax} checks, whether \val{\cs{relax}} was used
+% as value or not.
+%    \begin{macrocode}
+\newcommand*\svg@ifvalueisrelax[1]{%
+  \begingroup%
+    \def\svg@tempa{#1}%
+    \def\svg@tempb{\relax}%
+    \ifx\svg@tempa\svg@tempb%
+      \aftergroup\@firstoftwo%
+    \else%
+      \aftergroup\@secondoftwo%
+    \fi%
+  \endgroup%
+}
+%    \end{macrocode}
+% \end{macro}^^A \svg@ifvalueisrelax
+%
+% \iffalse
+%</main>
+%<*extract>
+% \fi
+%
+% \begin{macro}{\svgx@ifkeyandval}
+% \begin{macro}{\svgx@@ifkeyandval}
+% It is checked whether a key was given as \val{\meta{key}=\meta{value}} or 
+% like \val{\meta{key}=\{\meta{format}=\meta{value}\}}.
+%    \begin{macrocode}
+\newcommand*\svgx@@ifkeyandval{}
+\newcommand*\svgx@ifkeyandval[3]{%
+  \def\svgx@@ifkeyandval##1=##2=##3\@nil{\IfArgIsEmpty{##3}{#3}{#2}}%
+  \svgx@@ifkeyandval#1==\@nil%
+}
+%    \end{macrocode}
+% \end{macro}^^A \svgx@@ifkeyandval
+% \end{macro}^^A \svgx@ifkeyandval
+%
 % \iffalse
-%</base>
+%</extract>
+%<*main>
 % \fi
 %
 %
+%
+% \subsubsection{String manipulation}
+%
+% Both packages \pkg{svg} and \pkg{svg-extract} should be able to handle 
+% user-defined input and output paths. As there is the possibility for users to 
+% provide paths with or without quotes to \LaTeX{}, this is taken into account.
+%
+% \begin{macro}{\svg@deactivate@dq}
+% \changes{v2.02}{2018/09/07}{new}^^A
+% \changes{v2.02a}{2018/10/17}{bug fix for \pkg{polyglossia}}^^A
+% In order to avoid errors concerning file names with package \pkg{babel} and 
+% it's active double quotes, this command is defined. 
+%    \begin{macrocode}
+\newcommand*\svg@deactivate@dq{}
+\AfterPackage+{babel}{%
+  \renewcommand*\svg@deactivate@dq{\bbl@deactivate{"}}%
+  \providecommand*\bbl@deactivate[1]{}%
+}
+%    \end{macrocode}
+% \end{macro}^^A \svg@deactivate@dq
+% \begin{macro}{\svg@sanitize@dq}
+% \changes{v2.02}{2018/09/07}{new}^^A
+% Save expansion of the second argument in the macro from the first argument 
+% with deactivated double quotes.
+%    \begin{macrocode}
+\newcommand*\svg@sanitize@dq[2]{%
+  \begingroup%
+    \svg@deactivate@dq%
+    \edef\svg@tempa{\endgroup\def\noexpand#1{#2}}%
+  \svg@tempa%
+}
+%    \end{macrocode}
+% \end{macro}^^A \svg@sanitize@dq
+% \begin{macro}{\svg@quotes@check}
+% \begin{macro}{\svg@quotes@@check}
+% \begin{macro}{\if@svg@quotes@found}
+% During the treatment of paths, it may be necessary to temporarily remove 
+% quotes and, if required, add them again later. For this purpose, the switch 
+% \cs{if@svg@quotes@found} as well as the commands \cs{svg@quotes@check} and
+% \cs{svg@quotes@@check}, which controls the switch, are defined. As before, 
+% the string is passed in a macro to \cs{svg@quotes@check}.
+%    \begin{macrocode}
+\newif\if@svg@quotes@found
+\newcommand*\svg@quotes@check[1]{%
+  \expandafter\svg@quotes@@check#1"\@nil%
+}
+\newcommand*\svg@quotes@@check{}
+\def\svg@quotes@@check#1"#2\@nil{%
+  \IfArgIsEmpty{#2}{\@svg@quotes@foundfalse}{\@svg@quotes@foundtrue}%
+}
+%    \end{macrocode}
+% \end{macro}^^A \if@svg@quotes@found
+% \end{macro}^^A \svg@quotes@@check
+% \end{macro}^^A \svg@quotes@check
+% \begin{macro}{\svg@quotes@remove}
+% \changes{v2.02}{2018/09/07}{usage of \cs{svg@sanitize@dq}}^^A
+% \changes{v2.02}{2018/09/07}{calling \cs{svg@quotes@check}}^^A
+% \begin{macro}{\svg@quotes@@remove}
+% These two commands are used to remove all occurring quotes within a string. 
+% The only argument passed to \cs{svg@quotes@remove} is not the string itself
+% but a macro in which a string is stored.
+%    \begin{macrocode}
+\newcommand*\svg@quotes@remove[2][]{%
+  \begingroup%
+    \IfArgIsEmpty{#1}{\def\svg@tempb{#2}}{\def\svg@tempb{#1}}%
+    \svg@sanitize@dq\svg@tempa{\svg@tempb}%
+    \expandafter\svg@quotes@check\expandafter{\svg@tempa}%
+    \expandafter\svg@quotes@@remove\svg@tempa""\@nil%
+    \edef\svg@tempb{%
+      \endgroup%
+      \def\noexpand#2{\svg@tempa}%
+      \if@svg@quotes@found%
+        \noexpand\@svg@quotes@foundtrue%
+      \else%
+        \noexpand\@svg@quotes@foundfalse%
+      \fi%
+    }%
+  \svg@tempb%
+}
+\newcommand*\svg@quotes@@remove{}
+\def\svg@quotes@@remove#1"#2"#3\@nil{%
+  \IfArgIsEmpty{#2}{%
+    \edef\svg@tempa{#1}%
+  }{%
+    \svg@quotes@@remove#1#2#3""\@nil%
+  }%
+}
+%    \end{macrocode}
+% \end{macro}^^A \svg@quotes@@remove
+% \end{macro}^^A \svg@quotes@remove
+% \begin{macro}{\svg@remove@leadingchar}
+% \changes{v2.02}{2018/09/07}{new}^^A
+% This command removes the single character in given with the first argument 
+% from the expanded macro in the second argument.
+%    \begin{macrocode}
+\newcommand*\svg@remove@leadingchar[2]{%
+  \begingroup%
+    \svg@sanitize@dq\svg@tempa{#2}%
+    \def\svg@tempb{%
+      \def\svg@tempa####1\@nil{\def\svg@tempa{####1}}%
+      \kernel@ifnextchar#1%
+        {\expandafter\svg@tempa\@gobble}%
+        {\svg@tempa}%
+    }%
+    \expandafter\svg@tempb\svg@tempa\@nil%
+    \edef\svg@tempb{%
+      \endgroup%
+      \def\noexpand#2{\svg@tempa}%
+    }%
+  \svg@tempb%
+}
+%    \end{macrocode}
+% \end{macro}^^A \svg@remove@leadingchar
+%
+%
+%
+% \subsubsection{File handling}
+%
+% \begin{macro}{\svg@filename@parse}
+% \changes{v2.02}{2018/09/07}{usage of \cs{svg@sanitize@dq}}^^A
+% \changes{v2.02}{2018/09/07}{usage of \cs{svg@remove@leadingchar}}^^A
+% \changes{v2.02}{2018/09/07}{usage of \cs{svg@extension@parse}}^^A
+% As the internal \LaTeX{} command \cs{filename@parse} is not able to split a 
+% given file name containing quotes, \cs{svg@filename@parse} is defined to 
+% resolve this problem. The optional argument can be used to give a specific 
+% file extension, which should be searched within \cs{filename@ext}. If found 
+% at the very end, the previous part is appended to \cs{filename@base}.
+%    \begin{macrocode}
+\newcommand*\svg@filename@parse[2][]{%
+  \begingroup%
+%    \end{macrocode}
+% The given path and file is parsed with \cs{filename@parse}.
+%    \begin{macrocode}
+    \svg@sanitize@dq\svg@tempa{#2}%
+    \expandafter\filename@parse\expandafter{\svg@tempa}%
+% If there are quotes in the file path, the closing one will be found as first 
+% character in \cs{filename@base} as \cs{filename@area} is splitted at the last
+% slash. This leading quote is removed from \cs{filename@base} with 
+% \cs{svg@remove@leadingchar}.
+%    \begin{macrocode}
+    \svg@quotes@remove{\filename@area}%
+    \if@svg@quotes@found%
+      \edef\filename@area{"\filename@area"}%
+      \svg@remove@leadingchar"\filename@base%
+    \fi%
+%    \end{macrocode}
+% The found extension is parsed against the optional argument. If a double quote
+% was found within the extension, it actually belongs to \cs{filename@base}.
+%    \begin{macrocode}
+    \ifx\filename@ext\relax\else%
+      \svg@quotes@remove{\filename@ext}%
+      \svg@extension@parse{#1}%
+      \if@svg@quotes@found%
+        \edef\filename@base{\filename@base"}%
+      \fi%
+    \fi%
+%    \end{macrocode}
+% Quotes within \cs{filename@base} are normalized.
+%    \begin{macrocode}
+    \svg@quotes@remove{\filename@base}%
+    \if@svg@quotes@found%
+      \edef\filename@base{"\filename@base"}%
+    \fi%
+%    \end{macrocode}
+% With \cs{svg@tempa} the group is closed and the results are saved in the
+% macros \cs{filename@\dots}.
+%    \begin{macrocode}
+    \edef\svg@tempa{%
+      \endgroup%
+      \def\noexpand\filename@area{\filename@area}%
+      \def\noexpand\filename@base{\filename@base}%
+      \ifx\filename@ext\relax%
+        \let\noexpand\filename@ext\noexpand\relax%
+      \else%
+        \def\noexpand\filename@ext{\filename@ext}%
+      \fi%
+    }%
+  \svg@tempa%
+}
+%    \end{macrocode}
+% \end{macro}^^A \svg@filename@parse
+% \begin{macro}{\svg@extension@parse}
+% \changes{v2.02}{2018/09/07}{new}^^A
+% \begin{macro}{\svg@extension@@parse}
+% \changes{v2.02}{2018/09/07}{new}^^A
+% These macros are used to permit multiple dots in file names. The content of 
+% \cs{filename@ext} is split at each occurence of \val{.} and the trailing part 
+% is compared against the content of the argument of \cs{svg@extension@parse}, 
+% which is probably \cs{svg@file@ext}. If they are equal, the previous part is 
+% appended to \cs{filename@base} and \cs{filename@ext} is set to the content of 
+% the first argument.
+%    \begin{macrocode}
+\newcommand*\svg@extension@parse[1]{%
+  \IfArgIsEmpty{#1}{}{%
+    \@expandtwoargs\Ifstr%
+      {\detokenize\expandafter{\filename@ext}}{\detokenize\expandafter{#1}}{}{%
+      \begingroup%
+%    \end{macrocode}
+% Macro \cs{svg@tempa} is used to temporarily store anything before the 
+% searched extension at the end of \cs{filename@ext} and \cs{svg@tempb} is set
+% to the actual searched extension if found.
+%    \begin{macrocode}
+        \edef\svg@tempa{%
+          \def\noexpand\svg@tempa{}%
+          \let\noexpand\svg@tempb\relax%
+          \noexpand\svg@extension@@parse%
+            \filename@ext.\noexpand\@nil#1\noexpand\@nil%
+        }%
+        \svg@tempa%
+        \edef\svg@tempa{%
+          \endgroup%
+%    \end{macrocode}
+% If the trailing extension was found, \cs{filename@base} and \cs{filename@ext} 
+% are adopted.
+%    \begin{macrocode}
+          \def\noexpand\filename@base{\filename@base\svg@tempa}%
+          \ifx\svg@tempb\relax%
+            \let\noexpand\filename@ext\relax%
+          \else%
+            \def\noexpand\filename@ext{\svg@tempb}%
+          \fi%
+        }%
+      \svg@tempa%
+    }%
+  }%
+}
+%    \end{macrocode}
+% Macro \cs{svg@extension@@parse} is recursively called as long as there are 
+% any dots or the searched extension is found.
+%    \begin{macrocode}
+\newcommand*\svg@extension@@parse{}
+\def\svg@extension@@parse#1.#2\@nil#3\@nil{%
+  \edef\svg@tempa{\svg@tempa.#1}%
+  \IfArgIsEmpty{#2}{}{%
+    \Ifstr{\detokenize{#2}}{\detokenize{#3.}}{%
+%    \end{macrocode}
+% If the trailing extension is found, \cs{svg@tempb} is definied.
+%    \begin{macrocode}
+      \edef\svg@tempb{#3}%
+    }{%
+      \svg@extension@@parse#2\@nil#3\@nil%
+    }%
+  }%
+}
+%    \end{macrocode}
+% \end{macro}^^A \svg@extension@@parse
+% \end{macro}^^A \svg@extension@parse
+% \begin{macro}{\svg@iffilenewer}
+% \changes{v2.02d}{2019/10/22}{use \cs{filemoddate} with Xe\LaTeX, see
+%   \url{https://github.com/mrpiggi/svg/issues/12}}^^A
+% The macro \cs{svg@iffilenewer} is used to decide, whether the export with 
+% \app{Inkscape} is necessary due to an updated SVG~file. This can only be
+% done, if \cs{pdf@filemoddate} or \cs{filemoddate} is definied.
+% \ToDo{\cs{svg@iffilenewer} instead \cs{IfFileExists} to check results}[v2.03]
+%    \begin{macrocode}
+\newcommand*\svg@iffilenewer[2]{\@gobbletwo}
+\ifx\pdf@filemoddate\@undefined
+  \ifx\filemoddate\@undefined\else
+    \ifx\strcmp\@undefined\else
+      \renewcommand*\svg@iffilenewer[2]{%
+        \begingroup%
+          \edef\svg@tempa{\filemoddate{#1}}%
+          \edef\svg@tempb{\filemoddate{#2}}%
+          \ifnum\strcmp{\svg@tempa}{\svg@tempb}>\z@\relax%
+            \aftergroup\@firstoftwo%
+          \else%
+            \aftergroup\@secondoftwo%
+          \fi%
+        \endgroup%
+      }%
+    \fi
+  \fi
+\else
+  \ifx\pdf@strcmp\@undefined\else
+    \renewcommand*\svg@iffilenewer[2]{%
+      \begingroup%
+        \edef\svg@tempa{\pdf@filemoddate{#1}}%
+        \edef\svg@tempb{\pdf@filemoddate{#2}}%
+        \ifnum\pdf@strcmp{\svg@tempa}{\svg@tempb}>\z@\relax%
+          \aftergroup\@firstoftwo%
+        \else%
+          \aftergroup\@secondoftwo%
+        \fi%
+      \endgroup%
+    }%
+  \fi
+\fi
+%    \end{macrocode}
+% \end{macro}^^A \svg@iffilenewer
+% \begin{macro}{\svg@shell@mkdir}
+% \begin{macro}{\svg@shell@@mkdir}
+% \begin{macro}{\svg@shell@mv}
+% \begin{macro}{\svg@shell@@mv}
+% \begin{macro}{\svg@shell@rm}
+% \begin{macro}{\svg@shell@@rm}
+% Finally, platform dependend macros for creating directories as well as 
+% moving and deleting files are provided.
+%    \begin{macrocode}
+\newcommand*\svg@shell@mkdir[1]{%
+  \begingroup%
+%    \end{macrocode}
+% A directory should only be created, if it isn't the current working directory.
+%    \begin{macrocode}
+    \svg@quotes@remove[{#1}]{\svg@tempa}%
+    \@svg@tempswatrue%
+    \Ifstr{\svg@tempa}{}{\@svg@tempswafalse}{%
+    \Ifstr{\svg@tempa}{./}{\@svg@tempswafalse}{%
+    }}%
+    \if@svg@tempswa%
+      \ShellEscape{\svg@shell@@mkdir{\svg@tempa}}%
+    \fi%
+  \endgroup%
+}
+\newcommand*\svg@shell@mv[2]{%
+  \ShellEscape{\svg@shell@@mv\space"#1"\space"#2"}%
+}
+\newcommand*\svg@shell@rm[1]{%
+  \ShellEscape{\svg@shell@@rm\space"#1"}%
+}
+%    \end{macrocode}
+% The platform dependent commands for file access. 
+%    \begin{macrocode}
+\svg@ifwindowsdetected{%
+  \newcommand*\svg@shell@@mkdir[1]{if not exist "#1" mkdir "#1"}%
+  \newcommand*\svg@shell@@mv{move}%
+  \newcommand*\svg@shell@@rm{del}%
+}{%
+  \newcommand*\svg@shell@@mkdir[1]{mkdir -p "#1"}%
+  \newcommand*\svg@shell@@mv{mv}%
+  \newcommand*\svg@shell@@rm{rm}%
+}
+%    \end{macrocode}
+% \end{macro}^^A \svg@shell@@rm
+% \end{macro}^^A \svg@shell@rm
+% \end{macro}^^A \svg@shell@@mv
+% \end{macro}^^A \svg@shell@mv
+% \end{macro}^^A \svg@shell@@mkdir
+% \end{macro}^^A \svg@shell@mkdir
+% \begin{macro}{\svg@normalize@path}
+% \changes{v2.02}{2018/09/07}{usage of \cs{svg@deactivate@dq}}^^A
+% \begin{macro}{\svg@normalize@@path}
+% If any path is given, a trailing slash is needed. These two macros ensure
+% that this condition is fulfilled in any case, even if this is not considered
+% by the user. As before, a macro containing the path string is passed to 
+% \cs{svg@normalize@path}.
+%    \begin{macrocode}
+\newcommand*\svg@normalize@path[1]{%
+  \begingroup%
+    \svg@quotes@remove[{#1}]{\svg@tempa}%
+    \ifx\svg@tempa\@empty\relax%
+      \def\svg@tempa{./}%
+    \fi%
+    \expandafter\svg@normalize@@path\svg@tempa//\@nil%
+    \edef\svg@tempb{%
+      \endgroup%
+      \if@svg@quotes@found%
+        \def\noexpand#1{"\svg@tempa"}%
+      \else%
+        \def\noexpand#1{\svg@tempa}%
+      \fi%
+    }%
+  \svg@tempb%
+}
+\newcommand*\svg@normalize@@path{}
+\def\svg@normalize@@path#1/#2/\@nil{%
+  \IfArgIsEmpty{#2}{%
+    \IfArgIsEmpty{#1}{\def\svg@tempa{}}{\def\svg@tempa{#1/}}%
+  }{%
+    \svg@normalize@@path#2/\@nil%
+    \edef\svg@tempa{#1/\svg@tempa}%
+  }%
+}
+%    \end{macrocode}
+% \end{macro}^^A \svg@normalize@@path
+% \end{macro}^^A \svg@normalize@path
+%
+% \iffalse
+%</main>
+%<*extract>
+% \fi
+%
+%
+%
+% \subsubsection{List handling}
+%
+% \begin{macro}{\svgx@ifinlist}
+% Check, if the first argument is included in a comma-separated list in the 
+% second argument. Keep in mind that the first argument is not expanded at all, 
+% the second one exactly once. 
+%    \begin{macrocode}
+\newcommand*\svgx@ifinlist[2]{%
+  \begingroup%
+    \def\svg@tempa##1,#1,##2\@nil{%
+      \IfArgIsEmpty{##2}{%
+        \aftergroup\@secondoftwo%
+      }{%
+        \aftergroup\@firstoftwo%
+      }%
+    }%
+    \expandafter\svg@tempa\expandafter,#2,#1,\@nil%
+  \endgroup%
+}
+%    \end{macrocode}
+% \end{macro}^^A \svgx@ifinlist
+%
+% \iffalse
+%</extract>
+%</package&base>
+%<*package&option>
+% \fi
+%
+%
+%
 % \section{Including SVG files with package \pkg{svg}}
 % \subsection{Options}
 %
 % All options, which can be set either as package options or with 
 % \cs{svgsetup}, as well as the optional parameters for both user commands 
-% \cs{includesvg}\oarg{parameters}\marg{svg filename} and
-% \cs{includeinkscape}\oarg{parameters}\marg{graphic filename} are defined with
+% \cs{includesvg}\oarg{parameters}\marg{svg~filename} and
+% \cs{includeinkscape}\oarg{parameters}\marg{graphic~filename} are defined with
 % the interface provided by package \pkg{scrbase}.
 %    \begin{macrocode}
 \DefineFamily{SVG}
@@ -1371,8 +1919,7 @@ svg-extract -- Extract independent graphic files from SVG pictures
 %
 % \iffalse
 %</package&option>
-%<*package&base>
-%<*option>
+%<*package&option&main>
 % \fi
 %
 % \begin{macro}{\svg@deprecated@key}
@@ -1383,7 +1930,7 @@ svg-extract -- Extract independent graphic files from SVG pictures
 %    \begin{macrocode}
 \newcommand*\svg@deprecated@key[3][svg]{%
   \PackageWarning{#1}{%
-    The option key `#2' is deprecated.\MessageBreak%
+    The option key `#2' is deprecated. \MessageBreak%
     It's recommended to use `#3'\MessageBreak%
     instead%
   }%
@@ -1394,7 +1941,7 @@ svg-extract -- Extract independent graphic files from SVG pictures
 %
 % Within the exported \LaTeX~files of \app{Inkscape}, some commands are used 
 % out of additional packages. But maybe the user doesn't want to load this 
-% packages anyways.
+% packages anyhow.
 %
 % \begin{option}{usexcolor}
 % \changes{v2.00}{2017/02/17}{new}^^A
@@ -1435,6 +1982,15 @@ svg-extract -- Extract independent graphic files from SVG pictures
       \PackageWarning{svg}{Package `transparent' was loaded anyway}%
     }%
   \fi%
+%    \end{macrocode}
+% There is an issue\footnote{\url{https://github.com/ho-tex/oberdiek/issues/62}}
+% with package \pkg{transparent}, which currently implements an \emph{invalid} 
+% check relying on internal commands of package \pkg{pgfsys}, whereas these
+% have changed in the latest version.
+%    \begin{macrocode}
+  \AfterPackage*{transparent}{%
+    \@ifpackagelater{transparent}{2018/11/19}{}{\RequirePackage{pgfsys}}%
+  }%
 }
 %    \end{macrocode}
 % \end{macro}^^A \if@svg@use@transparent
@@ -1467,12 +2023,12 @@ svg-extract -- Extract independent graphic files from SVG pictures
 %    \begin{macrocode}
 \newcommand*\svg@ink@mode{}
 \DefineFamilyKey{SVG}{inkscape}[true]{%
-  \lowercase{\svg@sanitize@dq\svg@tempb{#1}}%
+  \svg@sanitize@dq\svg@tempb{#1}%
   \FamilySetNumerical{SVG}{inkscape}{svg@tempa}{%
     {false}{0},{off}{0},{no}{0},%
-    {true}{1},{on}{1},{yes}{1},{onlynewer}{1},{newer}{1},%
-    {force}{2},{forced}{2},{overwrite}{2},%
-    {pdf}{3},{eps}{4},{ps}{5},{png}{6},%
+    {true}{1},{on}{1},{yes}{1},{auto}{1},{onlynewer}{1},{newer}{1},%
+    {forced}{2},{force}{2},{overwrite}{2},%
+    {pdf}{3},{PDF}{3},{eps}{4},{EPS}{4},{ps}{5},{PS}{5},{png}{6},{PNG}{6},%
     {drawing}{7},{crop}{7},%
     {page}{8},{nocrop}{8},%
     {tex}{9},{latex}{9},{exportlatex}{9},{latexexport}{9},%
@@ -1520,7 +2076,7 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % In version~v1.0 the option \opt{inkscape} was used to set both the executable 
 % and options for \app{Inkscape}. This is taken into account here.
 %    \begin{macrocode}
-    \ifx\FamilyKeyState\FamilyKeyStateProcessed\else%
+    \ifx\FamilyKeyState\FamilyKeyStateProcessed\else% legacy option
 %    \end{macrocode}
 % Splitting executable from options with delimitted macros. After calling 
 % \cs{svg@tempa} with the given value, the part for the executable is stored in 
@@ -1529,7 +2085,7 @@ svg-extract -- Extract independent graphic files from SVG pictures
 %    \begin{macrocode}
       \svg@quotes@remove[{#1}]{\svg@tempb}%
       \def\svg@tempa##1-##2\@nil{%
-        \IfArgIsEmpty{##2}{\def\svg@tempb{}}{%
+        \IfArgIsEmpty{##2}{\let\svg@tempb\@empty}{%
           \def\svg@tempa####1-\@nil{\def\svg@tempb{-####1}}%
           \svg@tempa##2\@nil%
         }%
@@ -1591,7 +2147,7 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % \begin{option}{inkscapeopt}
 % \changes{v2.00}{2017/02/17}{new}^^A
 % \begin{macro}{\svg@ink@opt}
-% With these options, the terminal command for invoking \app{Inkscape} as well 
+% With these options, the executed command for invoking \app{Inkscape} as well 
 % as additional options can be defined.
 % \ToDo{rename \cs{svg@ink@ver} > \cs{svg@ink@ver@val} (keep former cs)?}[v2.03]
 %    \begin{macrocode}
@@ -1660,10 +2216,9 @@ svg-extract -- Extract independent graphic files from SVG pictures
   \renewcommand*\svg@ink@format{eps}
 \fi\fi
 \DefineFamilyKey{SVG}{inkscapeformat}{%
-  \lowercase{\def\svg@tempa{#1}}%
   \FamilySetNumerical{SVG}{inkscapeformat}{svg@tempa}{%
-    {pdf}{0},{eps}{1},{ps}{2},{png}{3}%
-  }{\svg@tempa}%
+    {pdf}{0},{PDF}{0},{eps}{1},{EPS}{1},{ps}{2},{PS}{2},{png}{3},{PNG}{3}%
+  }{#1}%
   \ifx\FamilyKeyState\FamilyKeyStateProcessed%
     \ifcase\svg@tempa\relax% latex
       \renewcommand*\svg@ink@format{pdf}%
@@ -1750,7 +2305,7 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % \end{option}^^A inkscapedpi
 % \begin{macro}{\svg@ink@cmd}
 % \changes{v2.02f}{2020/05/06}{distinguish \app{Inkscape}~CLI versions}^^A
-% The actual call of the \app{Inkscape} command~line~interface.
+% The actual usage of the \app{Inkscape} command~line~interface.
 %    \begin{macrocode}
 \newcommand*\svg@ink@cmd[2]{%
   \svg@ink@exe\space"#1.\svg@file@ext"\space\svg@ink@area\space%
@@ -1821,23 +2376,16 @@ svg-extract -- Extract independent graphic files from SVG pictures
 %
 %
 %
-% \subsubsection{Setting output folder}
+% \subsubsection{Setting output folder and file}
 %
 % \begin{option}{inkscapepath}
 % \changes{v2.00}{2017/02/17}{new}^^A
 % \changes{v2.02}{2018/09/07}{usage of \cs{svg@sanitize@dq}}^^A
-% \begin{option}{inkscapename}
-% \changes{v2.00}{2017/02/17}{new}^^A
 % \begin{macro}{\svg@out@path}
-% \begin{macro}{\svg@out@name}
-% \begin{macro}{\svg@out@base}
 % The option \opt{inkscapepath} controls, in which folder the results of the
-% \app{Inkscape} export will be located. With option \opt{inkscapename} the 
-% name of the exported file itself can be changed.
+% \app{Inkscape} export will be located.
 %    \begin{macrocode}
 \newcommand*\svg@out@path{}
-\newcommand*\svg@out@name{\svg@file@name\svg@file@suffix}
-\newcommand*\svg@out@base{\svg@out@path\svg@out@name.\svg@ink@format}
 \DefineFamilyKey{SVG}{inkscapepath}{%
   \svg@sanitize@dq\svg@tempb{#1}%
   \FamilySetNumerical{SVG}{inkscapepath}{svg@tempa}{%
@@ -1862,6 +2410,17 @@ svg-extract -- Extract independent graphic files from SVG pictures
     \FamilyKeyStateProcessed%
   \fi%
 }
+%    \end{macrocode}
+% \end{macro}^^A \svg@out@path
+% \end{option}^^A inkscapepath
+% \begin{option}{inkscapename}
+% \changes{v2.00}{2017/02/17}{new}^^A
+% \begin{macro}{\svg@out@name}
+% \begin{macro}{\svg@out@base}
+% With option \opt{inkscapename} the name of the exported file can be changed.
+%    \begin{macrocode}
+\newcommand*\svg@out@name{\svg@file@name\svg@file@suffix}
+\newcommand*\svg@out@base{\svg@out@path\svg@out@name.\svg@ink@format}
 \DefineFamilyKey{SVG}{inkscapename}{%
   \renewcommand*\svg@out@name{#1\svg@file@suffix}%
   \FamilyKeyStateProcessed%
@@ -1869,9 +2428,7 @@ svg-extract -- Extract independent graphic files from SVG pictures
 %    \end{macrocode}
 % \end{macro}^^A \svg@out@base
 % \end{macro}^^A \svg@out@name
-% \end{macro}^^A \svg@out@path
 % \end{option}^^A inkscapename
-% \end{option}^^A inkscapepath
 %
 %
 %
@@ -1933,9 +2490,9 @@ svg-extract -- Extract independent graphic files from SVG pictures
   \FamilySetBool{SVG}{keepaspectratio}{@svg@tempswa}{#1}%
   \ifx\FamilyKeyState\FamilyKeyStateProcessed%
     \if@svg@tempswa%
-      \FamilyOptions{SVG}{distort=false}%
-    \else
-      \FamilyOptions{SVG}{distort=true}%
+      \FamilyExecuteOptions[.svg.sty]{SVG}{distort=false}%
+    \else%
+      \FamilyExecuteOptions[.svg.sty]{SVG}{distort=true}%
     \fi%
   \fi%
 }
@@ -2013,7 +2570,7 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % from the PDF~file. 
 %    \begin{macrocode}
 \newcounter{svg@param@lastpage}
-\DefineFamilyKey{SVG}{lastpage}{%
+\DefineFamilyKey{SVG}{lastpage}[true]{%
   \FamilySetNumerical{SVG}{lastpage}{svg@tempa}{%
     {false}{0},{off}{0},{no}{0},{ignore}{0},%
     {true}{1},{on}{1},{yes}{1},{auto}{1}%
@@ -2037,518 +2594,36 @@ svg-extract -- Extract independent graphic files from SVG pictures
 %    \begin{macrocode}
 \newif\if@svg@draft
 \FamilyBoolKey{SVG}{draft}{@svg@draft}
-\AtBeginDocument{\if@svg@draft\else\ifGin@draft\@svg@drafttrue\fi\fi}
+\AfterPackage*{graphicx}{\ifGin@draft\@svg@drafttrue\fi}
 %    \end{macrocode}
 % \end{macro}^^A \if@svg@draft
 % \end{option}^^A draft
 %
+% \iffalse
+%</package&option&main>
+% \fi
 %
 %
-% \subsection{Handling path information}
 %
-% Both packages \pkg{svg} and \pkg{svg-extract} should be able to handle 
-% user-defined input and output paths. As there is the possibility for users to 
-% provide paths with or without quotes to \LaTeX, this is taken into account.
+% \subsection{User commands}
+% \subsubsection{Optional parameters for user commands}
 %
-% \begin{macro}{\svg@deactivate@dq}
-% \changes{v2.02}{2018/09/07}{new}^^A
-% \changes{v2.02a}{2018/10/17}{bug fix for \pkg{polyglossia}}^^A
-% In order to avoid errors concerning file names with package \pkg{babel} and 
-% it's active double quotes, this command is defined. 
-%    \begin{macrocode}
-\newcommand*\svg@deactivate@dq{}
-\AfterPackage+{babel}{%
-  \renewcommand*\svg@deactivate@dq{\bbl@deactivate{"}}%
-  \providecommand*\bbl@deactivate[1]{}%
-}
-%    \end{macrocode}
-% \end{macro}^^A \svg@deactivate@dq
-% \begin{macro}{\svg@sanitize@dq}
-% \changes{v2.02}{2018/09/07}{new}^^A
-% Save expansion of the second argument in the macro from teh first argument 
-% with deactivated double quotes.
-%    \begin{macrocode}
-\newcommand*\svg@sanitize@dq[2]{%
-  \begingroup%
-    \svg@deactivate@dq%
-    \edef\svg@tempa{\endgroup\def\noexpand#1{#2}}%
-  \svg@tempa%
-}
-%    \end{macrocode}
-% \end{macro}^^A \svg@sanitize@dq
-% \begin{macro}{\svg@quotes@remove}
-% \changes{v2.02}{2018/09/07}{usage of \cs{svg@sanitize@dq}}^^A
-% \changes{v2.02}{2018/09/07}{calling \cs{svg@quotes@check}}^^A
-% \begin{macro}{\svg@quotes@@remove}
-% These two commands are used to remove all occurring quotes within a string. 
-% The only argument passed to \cs{svg@quotes@remove} is not the string itself
-% but a macro in which a string is stored.
-%    \begin{macrocode}
-\newcommand*\svg@quotes@remove[2][]{%
-  \begingroup%
-    \IfArgIsEmpty{#1}{\def\svg@tempb{#2}}{\def\svg@tempb{#1}}%
-    \svg@sanitize@dq\svg@tempa{\svg@tempb}%
-    \expandafter\svg@quotes@check\expandafter{\svg@tempa}%
-    \expandafter\svg@quotes@@remove\svg@tempa""\@nil%
-    \edef\svg@tempb{%
-      \endgroup%
-      \def\noexpand#2{\svg@tempa}%
-      \if@svg@quotes@found%
-        \noexpand\@svg@quotes@foundtrue%
-      \else%
-        \noexpand\@svg@quotes@foundfalse%
-      \fi%
-    }%
-  \svg@tempb%
-}
-\newcommand*\svg@quotes@@remove{}
-\def\svg@quotes@@remove#1"#2"#3\@nil{%
-  \IfArgIsEmpty{#2}{%
-    \edef\svg@tempa{#1}%
-  }{%
-    \svg@quotes@@remove#1#2#3""\@nil%
-  }%
-}
-%    \end{macrocode}
-% \end{macro}^^A \svg@quotes@@remove
-% \end{macro}^^A \svg@quotes@remove
-% \begin{macro}{\svg@quotes@check}
-% \begin{macro}{\svg@quotes@@check}
-% \begin{macro}{\if@svg@quotes@found}
-% During the treatment of paths, it may be necessary to temporarily remove 
-% quotes and, if required, add them again later. For this purpose, the switch 
-% \cs{if@svg@quotes@found} as well as the commands \cs{svg@quotes@check} and
-% \cs{svg@quotes@@check}, which controls the switch, are defined. As before, 
-% the string is passed in a macro to \cs{svg@quotes@check}.
-%    \begin{macrocode}
-\newif\if@svg@quotes@found
-\newcommand*\svg@quotes@check[1]{%
-  \expandafter\svg@quotes@@check#1"\@nil%
-}
-\newcommand*\svg@quotes@@check{}
-\def\svg@quotes@@check#1"#2\@nil{%
-  \IfArgIsEmpty{#2}{\@svg@quotes@foundfalse}{\@svg@quotes@foundtrue}%
-}
-%    \end{macrocode}
-% \end{macro}^^A \if@svg@quotes@found
-% \end{macro}^^A \svg@quotes@@check
-% \end{macro}^^A \svg@quotes@check
-% \begin{macro}{\svg@remove@leadingchar}
-% \changes{v2.02}{2018/09/07}{new}^^A
-% This command removes the single character in given with the first argument 
-% from the expanded macro in the second argument.
-%    \begin{macrocode}
-\newcommand*\svg@remove@leadingchar[2]{%
-  \begingroup%
-    \svg@sanitize@dq\svg@tempa{#2}%
-    \def\svg@tempb{%
-      \def\svg@tempa####1\@nil{\def\svg@tempa{####1}}%
-      \kernel@ifnextchar#1%
-        {\expandafter\svg@tempa\@gobble}%
-        {\svg@tempa}%
-    }%
-    \expandafter\svg@tempb\svg@tempa\@nil%
-    \edef\svg@tempb{%
-      \endgroup%
-      \def\noexpand#2{\svg@tempa}%
-    }%
-  \svg@tempb%
-}
-%    \end{macrocode}
-% \end{macro}^^A \svg@remove@leadingchar% 
-% \begin{macro}{\svg@set@input@path}
-% \changes{v2.01}{2017/11/28}{new}^^A
-% \changes{v2.02}{2018/09/07}{usage of \cs{svg@deactivate@dq}}^^A
-% \begin{macro}{\svg@append@input@path}
-% \changes{v2.01}{2017/11/28}{new}^^A
-% \changes{v2.02}{2018/09/07}{avoid duplicates in \cs{input@path}}^^A
-% In order to import SVG~files from different folders, \cs{svg@set@input@path}
-% evaluates several macros, which are supposed to be used for holding different 
-% search folders. Any given path will be handled by \cs{svg@normalize@path}.
-% The optional argument can be used to append an additional search path.
-%    \begin{macrocode}
-\newcommand*\svg@set@input@path[1][]{%
-  \begingroup%
-    \svg@deactivate@dq%
-%    \end{macrocode}
-% If a path was already found and stored within \cs{svg@file@path}, it is
-% searched first and wrapped in curly braces. This is necessary for using
-% commands like \cs{input}\marg{tex filename} within SVG~files.
-%    \begin{macrocode}
-    \ifx\svg@file@path\@empty\else%
-      \svg@normalize@path{\svg@file@path}%
-      \edef\svg@file@path{{\svg@file@path}}%
-    \fi%
-%    \end{macrocode}
-% Afterwards, several search paths are appended. If \cs{svgpath} was used, it 
-% is searched next. If nothing was found, \cs{graphicspath} is considered if 
-% defined followed by a path given in the third argument. If nothing was found
-% yet, the standard \cs{input@path} is searched last.
-%    \begin{macrocode}
-    \svg@append@input@path{\svg@file@path}{\svg@input@path}%
-    \svg@append@input@path{\svg@file@path}{\Ginput@path}%
-    \IfArgIsEmpty{#1}{}{\svg@append@input@path{\svg@file@path}{{#1}}}%
-    \svg@append@input@path{\svg@file@path}{\input@path}%
-%    \end{macrocode}
-% Finally, \cs{input@path} is set.
-%    \begin{macrocode}
-    \edef\svg@tempa{%
-      \endgroup%
-      \ifx\svg@file@path\@empty\else%
-        \def\noexpand\input@path{\svg@file@path}%
-      \fi%
-    }%
-  \svg@tempa%
-}
-%    \end{macrocode}
-% Only, if a certain search path is defined, it is added. The paths given in 
-% the first argument are compared to each path in the second argument and only 
-% new ones are added.
-%    \begin{macrocode}
-\newcommand*\svg@append@input@path[2]{%
-  \ifx#2\@undefined\else%
-    \edef\svg@tempb{#2}%
-    \expandafter\@tfor\expandafter\svg@tempa\expandafter:\expandafter=%
-        \svg@tempb\do{%
-%    \end{macrocode}
-% Passing each new path to \cs{svg@normalize@path}. If a path already exists, 
-% switch \cs{if@svg@tempswa} is set to \val{false}.
-%    \begin{macrocode}
-      \ifx\svg@tempa\@empty\else%
-        \@svg@tempswatrue%
-        \svg@normalize@path{\svg@tempa}%
-        \expandafter\@tfor\expandafter\svg@tempb\expandafter:\expandafter=%
-            #1\do{%
-          \ifx\svg@tempa\svg@tempb%
-            \@svg@tempswafalse%
-            \@break@tfor%
-          \fi%
-        }%
-        \if@svg@tempswa%
-          \edef#1{#1{\svg@tempa}}%
-        \fi%
-      \fi%
-    }%
-  \fi%
-}
-%    \end{macrocode}
-% \end{macro}^^A \svg@append@input@path
-% \end{macro}^^A \svg@set@input@path
-% \begin{macro}{\svg@normalize@path}
-% \changes{v2.02}{2018/09/07}{usage of \cs{svg@deactivate@dq}}^^A
-% \begin{macro}{\svg@normalize@@path}
-% If any path is given, a trailing slash is needed. These two macros ensure
-% that this condition is fulfilled in any case, even if this is not considered
-% by the user. As before, a macro containing the path string is passed to 
-% \cs{svg@normalize@path}.
-%    \begin{macrocode}
-\newcommand*\svg@normalize@path[1]{%
-  \begingroup%
-    \svg@quotes@remove[{#1}]{\svg@tempa}%
-    \ifx\svg@tempa\@empty\relax%
-      \def\svg@tempa{./}%
-    \fi%
-    \expandafter\svg@normalize@@path\svg@tempa//\@nil%
-    \edef\svg@tempb{%
-      \endgroup%
-      \if@svg@quotes@found%
-        \def\noexpand#1{"\svg@tempa"}%
-      \else%
-        \def\noexpand#1{\svg@tempa}%
-      \fi%
-    }%
-  \svg@tempb%
-}
-\newcommand*\svg@normalize@@path{}
-\def\svg@normalize@@path#1/#2/\@nil{%
-  \IfArgIsEmpty{#2}{%
-    \IfArgIsEmpty{#1}{\def\svg@tempa{}}{\def\svg@tempa{#1/}}%
-  }{%
-    \svg@normalize@@path#2/\@nil%
-    \edef\svg@tempa{#1/\svg@tempa}%
-  }%
-}
-%    \end{macrocode}
-% \end{macro}^^A \svg@normalize@@path
-% \end{macro}^^A \svg@normalize@path
-% \begin{macro}{\svg@ifvalueisrelax}
-% For some keys the usage of \val{\cs{relax}} as a value should lead to a 
-% special reaction, such as restoring to default behavior or reseting the key.
-% Therefore, \cs{svg@ifvalueisrelax} checks, whether \val{\cs{relax}} was used
-% as value or not.
+% The family member is defined for both \pkg{svg} and \pkg{svg-extract}.
 %    \begin{macrocode}
-\newcommand*\svg@ifvalueisrelax[1]{%
-  \begingroup%
-    \def\svg@tempa{#1}%
-    \def\svg@tempb{\relax}%
-    \ifx\svg@tempa\svg@tempb\relax%
-      \aftergroup\@firstoftwo%
-    \else%
-      \aftergroup\@secondoftwo%
-    \fi%
-  \endgroup%
-}
+%<*package&body>
+\DefineFamilyMember[.param]{SVG}
+%</package&body>
 %    \end{macrocode}
-% \end{macro}^^A \svg@ifvalueisrelax
 %
 % \iffalse
-%</option>
+%<*package&main>
 %<*body>
 % \fi
 %
-% \begin{macro}{\svg@get@path}
-% \changes{v2.01}{2017/11/28}{using \cs{svg@set@input@path}}^^A
-% \changes{v2.01}{2017/11/28}{using \cs{trim@spaces}}^^A
-% \begin{macro}{\if@svg@file@found}
-% \begin{macro}{\svg@file@path}
-% \begin{macro}{\svg@file@name}
-% \begin{macro}{\svg@file@base}
-% \begin{macro}{\svg@file@suffix}
-% The command \cs{svg@get@path} tries to find a given SVG~file. If the 
-% searched file wasn't found in the current path, all paths given with 
-% \cs{svgpath} are evaluated. If there was no appropriate file again, all paths
-% given by \cs{graphicspath} are examined. In the last step, a given path 
-% within the second mandatory argument is browsed. The results for file path
-% and name are stored in \cs{svg@file@path} and \cs{svg@file@name} as well as
-% the compound of both is saved in \cs{svg@file@base}.
-%    \begin{macrocode}
-\newif\if@svg@file@found
-\newcommand*\svg@file@path{}
-\newcommand*\svg@file@name{}
-\newcommand*\svg@file@base{}
-\newcommand*\svg@file@suffix{}
-\newcommand*\svg@get@path[3][\svg@file@ext]{%
-  \begingroup%
-%    \end{macrocode}
-% A maybe given, unneeded file extension is removed.
-%    \begin{macrocode}
-    \svg@filename@parse[{#1}]{#2}%
-    \IfArgIsEmpty{#1}{%
-      \edef\svg@tempa{\filename@area\filename@base.\filename@ext}%
-    }{%
-      \edef\svg@tempa{\filename@area\filename@base.#1}%
-    }%
-%    \end{macrocode}
-% After calling \cs{svg@set@input@path}, all search paths are stored in
-% \cs{input@path}, a single path given in the third argument will also be 
-% considered.
-%    \begin{macrocode}
-    \svg@set@input@path[{#3}]%
-%    \end{macrocode}
-% The specified file is searched with \cs{IfFileExists}. If the file search was 
-% succesful, the macro \cs{svg@filename@parse} is called with the result.
-%    \begin{macrocode}
-    \@svg@tempswafalse%
-    \expandafter\IfFileExists\expandafter{\svg@tempa}{%
-      \expandafter\svg@quotes@check\expandafter{\svg@tempa}%
-      \if@svg@quotes@found\else%
-        \svg@quotes@remove{\@filef@und}%
-      \fi%
-      \@svg@tempswatrue%
-      \edef\@filef@und{\expandafter\trim@spaces\expandafter{\@filef@und}}%
-      \svg@filename@parse[{#1}]{\@filef@und}%
-    }{}%
-    \edef\svg@tempa{%
-      \endgroup%
-      \if@svg@tempswa%
-        \noexpand\@svg@file@foundtrue%
-        \def\noexpand\svg@file@path{\filename@area}%
-        \def\noexpand\svg@file@name{\filename@base}%
-        \def\noexpand\svg@file@base{\filename@area\filename@base}%
-      \else%
-        \noexpand\@svg@file@foundfalse%
-        \def\noexpand\svg@file@path{}%
-        \def\noexpand\svg@file@name{#2}%
-        \def\noexpand\svg@file@base{#2}%
-      \fi%
-    }%
-  \svg@tempa%
-}
-%    \end{macrocode}
-% \end{macro}^^A \svg@file@suffix
-% \end{macro}^^A \svg@file@base
-% \end{macro}^^A \svg@file@name
-% \end{macro}^^A \svg@file@path
-% \end{macro}^^A \if@svg@file@found
-% \end{macro}^^A \svg@get@path
-% \begin{macro}{\svg@filename@parse}
-% \changes{v2.02}{2018/09/07}{usage of \cs{svg@sanitize@dq}}^^A
-% \changes{v2.02}{2018/09/07}{usage of \cs{svg@remove@leadingchar}}^^A
-% \changes{v2.02}{2018/09/07}{usage of \cs{svg@extension@parse}}^^A
-% As the internal \LaTeXe{} command \cs{filename@parse} is not able to split a 
-% given file name containing quotes, \cs{svg@filename@parse} is defined to 
-% resolve this problem. The optional argument can be used to give a specific 
-% file extension, which should be searched within \cs{filename@ext}. If found 
-% at the very end, the previous part is appended to \cs{filename@base}.
-%    \begin{macrocode}
-\newcommand*\svg@filename@parse[2][]{%
-  \begingroup%
-%    \end{macrocode}
-% The given path and file is parsed with \cs{filename@parse}.
-%    \begin{macrocode}
-    \svg@sanitize@dq\svg@tempa{#2}%
-    \expandafter\filename@parse\expandafter{\svg@tempa}%
-% If there are quotes in the file path, the closing one will be found as first 
-% character in \cs{filename@base} as \cs{filename@area} is splitted at the last
-% slash. This leading quote is removed from \cs{filename@base} with 
-% \cs{svg@remove@leadingchar}.
-%    \begin{macrocode}
-    \svg@quotes@remove{\filename@area}%
-    \if@svg@quotes@found%
-      \edef\filename@area{"\filename@area"}%
-      \svg@remove@leadingchar"\filename@base%
-    \fi%
-%    \end{macrocode}
-% The found extension is parsed against the optional argument. If a double quote
-% was found within the extension, it actually belongs to \cs{filename@base}.
-%    \begin{macrocode}
-    \ifx\filename@ext\relax\else%
-      \svg@quotes@remove{\filename@ext}%
-      \svg@extension@parse{#1}%
-      \if@svg@quotes@found%
-        \edef\filename@base{\filename@base"}%
-      \fi%
-    \fi%
-%    \end{macrocode}
-% Quotes within \cs{filename@base} are normalized.
-%    \begin{macrocode}
-    \svg@quotes@remove{\filename@base}%
-    \if@svg@quotes@found%
-      \edef\filename@base{"\filename@base"}%
-    \fi%
-%    \end{macrocode}
-% With \cs{svg@tempa} the group is closed and the results are saved in the
-% macros \cs{filename@\dots}.
-%    \begin{macrocode}
-    \edef\svg@tempa{%
-      \endgroup%
-      \def\noexpand\filename@area{\filename@area}%
-      \def\noexpand\filename@base{\filename@base}%
-      \ifx\filename@ext\relax%
-        \let\noexpand\filename@ext\noexpand\relax%
-      \else%
-        \def\noexpand\filename@ext{\filename@ext}%
-      \fi%
-    }%
-  \svg@tempa%
-}
-%    \end{macrocode}
-% \end{macro}^^A \svg@filename@parse
-% \begin{macro}{\svg@extension@parse}
-% \changes{v2.02}{2018/09/07}{new}^^A
-% \begin{macro}{\svg@extension@@parse}
-% \changes{v2.02}{2018/09/07}{new}^^A
-% These macros are used to permit multiple dots in file names. The content of 
-% \cs{filename@ext} is split at each occurence of \val{.} and the trailing part 
-% is compared against the content of the argument of \cs{svg@extension@parse}, 
-% which is probably \cs{svg@file@ext}. If they are equal, the previous part is 
-% appended to \cs{filename@base} and \cs{filename@ext} is set to the content of 
-% the first argument.
-%    \begin{macrocode}
-\newcommand*\svg@extension@parse[1]{%
-  \IfArgIsEmpty{#1}{}{%
-    \@expandtwoargs\Ifstr%
-      {\detokenize\expandafter{\filename@ext}}{\detokenize\expandafter{#1}}{}{%
-      \begingroup%
-%    \end{macrocode}
-% Macro \cs{svg@tempa} is used to temporarily store anything before the 
-% searched extension at the end of \cs{filename@ext} and \cs{svg@tempb} is set
-% to the actual searched extension if found.
-%    \begin{macrocode}
-        \edef\svg@tempa{%
-          \def\noexpand\svg@tempa{}%
-          \let\noexpand\svg@tempb\relax%
-          \noexpand\svg@extension@@parse%
-            \filename@ext.\noexpand\@nil#1\noexpand\@nil%
-        }%
-        \svg@tempa%
-        \edef\svg@tempa{%
-          \endgroup%
-%    \end{macrocode}
-% If the trailing extension was found, \cs{filename@base} and \cs{filename@ext} 
-% are adopted.
-%    \begin{macrocode}
-          \def\noexpand\filename@base{\filename@base\svg@tempa}%
-          \ifx\svg@tempb\relax%
-            \let\noexpand\filename@ext\relax%
-          \else%
-            \def\noexpand\filename@ext{\svg@tempb}%
-          \fi%
-        }%
-      \svg@tempa%
-    }%
-  }%
-}
-%    \end{macrocode}
-% Macro \cs{svg@extension@@parse} is recursively called as long as there are 
-% any dots or the searched extension is found.
-%    \begin{macrocode}
-\newcommand*\svg@extension@@parse{}
-\def\svg@extension@@parse#1.#2\@nil#3\@nil{%
-  \edef\svg@tempa{\svg@tempa.#1}%
-  \IfArgIsEmpty{#2}{}{%
-    \Ifstr{\detokenize{#2}}{\detokenize{#3.}}{%
-%    \end{macrocode}
-% If the trailing extension is found, \cs{svg@tempb} is definied.
-%    \begin{macrocode}
-      \edef\svg@tempb{#3}%
-    }{%
-      \svg@extension@@parse#2\@nil#3\@nil%
-    }%
-  }%
-}
-%    \end{macrocode}
-% \end{macro}^^A \svg@extension@@parse
-% \end{macro}^^A \svg@extension@parse
-% \begin{macro}{\svg@iffilenewer}
-% \changes{v2.02d}{2019/10/22}{use \cs{filemoddate} with Xe\LaTeX, see
-%   \url{https://github.com/mrpiggi/svg/issues/12}}^^A
-% The macro \cs{svg@iffilenewer} is used to decide, whether the export with 
-% \app{Inkscape} is necessary due to an updated SVG~file. This can only be
-% done, if \cs{pdf@filemoddate} or \cs{filemoddate} is definied.
-% \ToDo{\cs{svg@iffilenewer} instead \cs{IfFileExists} to check results}[v2.03]
-%    \begin{macrocode}
-\newcommand*\svg@iffilenewer[2]{\@gobbletwo}
-\ifx\pdf@filemoddate\@undefined
-  \ifx\filemoddate\@undefined\else
-    \ifx\strcmp\@undefined\else
-      \renewcommand*\svg@iffilenewer[2]{%
-        \begingroup%
-          \edef\svg@tempa{\filemoddate{#1}}%
-          \edef\svg@tempb{\filemoddate{#2}}%
-          \ifnum\strcmp{\svg@tempa}{\svg@tempb}>\z@\relax%
-            \aftergroup\@firstoftwo%
-          \else%
-            \aftergroup\@secondoftwo%
-          \fi%
-        \endgroup%
-      }%
-    \fi
-  \fi
-\else
-  \ifx\pdf@strcmp\@undefined\else
-    \renewcommand*\svg@iffilenewer[2]{%
-      \begingroup%
-        \edef\svg@tempa{\pdf@filemoddate{#1}}%
-        \edef\svg@tempb{\pdf@filemoddate{#2}}%
-        \ifnum\pdf@strcmp{\svg@tempa}{\svg@tempb}>\z@\relax%
-          \aftergroup\@firstoftwo%
-        \else%
-          \aftergroup\@secondoftwo%
-        \fi%
-      \endgroup%
-    }%
-  \fi
-\fi
-%    \end{macrocode}
-% \end{macro}^^A \svg@iffilenewer
-%
-% \subsection{Optional Parameters for user commands}
-%
+% \begin{macro}{\svg@local@param@def}
+% \begin{macro}{\svg@local@param@use}
 % \begin{macro}{\svg@local@param@set}
 % \changes{v2.02}{2018/09/07}{reasonable value for key \opt{distort}}^^A
-% \begin{macro}{\svg@local@param@use}
-% \begin{macro}{\svg@local@param@def}
 % Most of the package options can also be used as optional parameters for 
 % \cs{includesvg} or \cs{includeinkscape}. Some of them are overloaded for the 
 % usage as optional argument and there are some keys, which \emph{only} can be
@@ -2556,6 +2631,12 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % \cs{svg@local@param@use} is extended with \cs{svg@local@param@def} by the
 % definition of local keys during the loading of package \pkg{svg}.
 %    \begin{macrocode}
+\newcommand*\svg@local@param@use{}
+\newcommand*\svg@local@param@def[1]{%
+  \edef\svg@local@param@use{%
+    \unexpanded\expandafter{\svg@local@param@use}\unexpanded{#1}%
+  }%
+}
 \newcommand*\svg@local@param@set[1]{%
   \svg@local@param@use%
   \FamilyOptions{SVG}{#1}%
@@ -2569,44 +2650,51 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % Using \opt{distort=true} is only reasonable, if \opt{height} and \opt{width} 
 % are given.
 %    \begin{macrocode}
-  \@svg@tempswafalse%
+  \@svg@tempswatrue%
   \ifdim\svg@param@width>\z@\relax\ifdim\svg@param@height>\z@\relax%
-    \@svg@tempswatrue%
+    \@svg@tempswafalse%
   \fi\fi%
-  \if@svg@tempswa\else%
-    \FamilyOptions{SVG}{distort=false}%
+  \if@svg@tempswa%
+    \FamilyExecuteOptions[.svg.sty]{SVG}{distort=false}%
   \fi%
 }
-\newcommand*\svg@local@param@use{}
-\newcommand*\svg@local@param@def[1]{%
-  \edef\svg@local@param@use{%
-    \unexpanded\expandafter{\svg@local@param@use}\unexpanded{#1}%
-  }%
-}
 %    \end{macrocode}
-% \end{macro}^^A \svg@local@param@def
-% \end{macro}^^A \svg@local@param@use
 % \end{macro}^^A \svg@local@param@set
-%
-% \iffalse
-%</body>
-%</package&base>
-% \fi
-%
-% The family member is defined for both \pkg{svg} and \pkg{svg-extract}.
+% \end{macro}^^A \svg@local@param@use
+% \end{macro}^^A \svg@local@param@def
+% \begin{macro}{\svg@deprecated@param}
+% This macro checks, if \cs{svgwidth} or \cs{svgscale} are defined. In this 
+% case, the given values are passed to the correlating parameters and a warning 
+% is raised.
 %    \begin{macrocode}
-%<*body>
-\DefineFamilyMember[.param]{SVG}
-%</body>
+\newcommand*\svg@deprecated@param{%
+  \@svg@tempswafalse%
+  \ifx\svgwidth\@undefined\else%
+    \edef\svg@tempa{\noexpand\FamilyOptions{SVG}{width=\svgwidth}}%
+    \svg@tempa%
+    \@svg@tempswatrue%
+  \fi%
+  \ifx\svgscale\@undefined\else%
+    \edef\svg@tempa{\noexpand\FamilyOptions{SVG}{scale=\svgscale}}%
+    \svg@tempa%
+    \@svg@tempswatrue%
+  \fi%
+  \if@svg@tempswa%
+    \PackageWarning{svg}{%
+      You should specify the image size with parameters\MessageBreak%
+      `width' and `height' or `scale' instead of using\MessageBreak%
+      `\string\svgscale' or `\string\svgwidth'%
+    }%
+    \let\svgwidth\@undefined%
+    \let\svgscale\@undefined%
+  \fi%
+}
 %    \end{macrocode}
+% \end{macro}^^A \svg@deprecated@param
 %
 %
-% \iffalse
-%<*package&base>
-%<*body>
-% \fi
 %
-% \subsection{User commands}
+% \subsubsection{Definition of user commands}
 %
 % \begin{macro}{\svgsetup}
 % \changes{v2.00}{2017/02/17}{new}^^A
@@ -2769,6 +2857,7 @@ svg-extract -- Extract independent graphic files from SVG pictures
 \newcommand*\svg@param@angle{0}
 \svg@local@param@def{%
   \DefineFamilyKey[.param]{SVG}{angle}{%
+    \FamilyKeyStateUnknownValue%
     \Ifisdimension{#1\p@}{%
       \renewcommand*\svg@param@angle{#1}%
       \FamilyKeyStateProcessed%
@@ -2917,35 +3006,6 @@ svg-extract -- Extract independent graphic files from SVG pictures
 %
 % \subsection{Auxiliary macros}
 %
-% \begin{macro}{\svg@deprecated@param}
-% This macro checks, if \cs{svgwidth} or \cs{svgscale} are defined. In this 
-% case, the given values are passed to the correlating parameters and a warning 
-% is raised.
-%    \begin{macrocode}
-\newcommand*\svg@deprecated@param{%
-  \@svg@tempswafalse%
-  \ifx\svgwidth\@undefined\else%
-    \edef\svg@tempa{\noexpand\FamilyOptions{SVG}{width=\svgwidth}}%
-    \svg@tempa%
-    \@svg@tempswatrue%
-  \fi%
-  \ifx\svgscale\@undefined\else%
-    \edef\svg@tempa{\noexpand\FamilyOptions{SVG}{scale=\svgscale}}%
-    \svg@tempa%
-    \@svg@tempswatrue%
-  \fi%
-  \if@svg@tempswa%
-    \PackageWarning{svg}{%
-      You should specify the image size with parameters\MessageBreak%
-      `width' and `height' or `scale' instead of using\MessageBreak%
-      `\string\svgscale' or `\string\svgwidth'%
-    }%
-    \let\svgwidth\@undefined%
-    \let\svgscale\@undefined%
-  \fi%
-}
-%    \end{macrocode}
-% \end{macro}^^A \svg@deprecated@param
 % \begin{macro}{\svg@ink@run}
 % \begin{macro}{\if@svg@ink@run}
 % The command, which performs the call of \app{Inkscape} via \cs{ShellEscape}.
@@ -2996,7 +3056,7 @@ svg-extract -- Extract independent graphic files from SVG pictures
       \fi%
 %    \end{macrocode}
 % If all checks were positive, the export with \app{Inkscape} can be done in 
-% case \file{-{}-shell-escape} is enabled.
+% case flag \file{-{}-shell-escape} is used.
 %    \begin{macrocode}
       \if@svg@ink@run%
         \ifnum\pdf@shellescape=\@ne\relax%
@@ -3016,8 +3076,8 @@ svg-extract -- Extract independent graphic files from SVG pictures
             \fi%
           }%
 %    \end{macrocode}
-% Executing \app{Inkscape} through the command~line~interface. Afterwards, the 
-% export results are moved into the given output path.
+% Executing \app{Inkscape} on shell. Afterwards, the export results are moved 
+% into the given output path.
 %    \begin{macrocode}
           \svg@quotes@remove[\svg@file@base]{\svg@tempa}%
           \svg@quotes@remove[\svg@out@name]{\svg@tempb}%
@@ -3064,9 +3124,9 @@ svg-extract -- Extract independent graphic files from SVG pictures
             \edef\svg@tempb{\svg@tempb.\svg@ink@format}%
             \svg@quotes@remove{\svg@out@base}%
             \svg@shell@mkdir{\svg@out@path}%
-            \svg@shell@move{\svg@tempb}{\svg@out@base}%
+            \svg@shell@mv{\svg@tempb}{\svg@out@base}%
             \if@svg@ink@latex%
-              \svg@shell@move{\svg@tempb_tex}{\svg@out@base_tex}%
+              \svg@shell@mv{\svg@tempb_tex}{\svg@out@base_tex}%
             \fi%
           }{%
             \gdef\svg@ink@ver{\m@ne}%
@@ -3098,71 +3158,43 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % \end{macro}^^A \svg@ink@run
 % \begin{macro}{\svg@input}
 % \begin{macro}{\svg@@input}
+% \changes{v2.02g}{2020/06/12}{parsing of file extension discarded; meanwhile 
+%   taken over by the kernel}^^A
+% \begin{macro}{\svg@box}
 % With \cs{svg@@input} the export results of \app{Inkscape} are included. The 
 % macro \cs{svg@input} is defined in order to realize the option \opt{exclude} 
 % for package \pkg{svg-extract}. The macro \cs{svg@set@input@path} is called to 
 % support commands like \cs{input}\marg{tex filename} within SVG~files.
 %    \begin{macrocode}
+\newsavebox\svg@box
 \newcommand*\svg@input{\svg@@input}
 \newcommand*\svg@@input[2][]{%
   \IfArgIsEmpty{#1}{}{\svg@local@param@set{#1}}%
   \svg@set@input@path%
+  \@svg@tempswatrue%
   \if@svg@draft%
-    \@svg@ink@latexfalse%
+    \@svg@tempswafalse%
   \fi%
-%    \end{macrocode}
-% In order to support file names with multiple dots, the second argument is 
-% parsed and only the part after the last dot is stroed in \cs{svg@tempb} as 
-% extension. Everything before is stored in \cs{svg@tempa}.
-%    \begin{macrocode}
-  \def\svg@tempb##1.##2\@nil{%
-    \IfArgIsEmpty{##2}{%
-      \def\svg@tempb{##1}%
-    }{%
-      \edef\svg@tempa{\svg@tempa.##1}%
-      \svg@tempb##2\@nil%
-    }%
-  }%
-  \edef\svg@tempa{%
-    \def\noexpand\svg@tempa{}%
-    \noexpand\svg@tempb#2.\noexpand\@nil%
-  }%
-  \svg@tempa%
-%    \end{macrocode}
-% Afterwards \cs{svg@tempa} is defined with the file name within enclosing 
-% braces followed by the extension---only if the file name itself contains any 
-% dots--- and \cs{svg@tempb} holds the original file name plus extension
-% without enclosing braces.
-%    \begin{macrocode}
-  \svg@remove@leadingchar.\svg@tempa%
-  \begingroup%
-    \expandafter\filename@parse\expandafter{\svg@tempa}%
-    \edef\svg@tempa{%
-      \endgroup%
-      \ifx\filename@ext\relax%
-        \edef\noexpand\svg@tempa{\svg@tempa.\svg@tempb}%
-      \else%
-        \edef\noexpand\svg@tempa{{\svg@tempa}.\svg@tempb}%
-      \fi%
-    }%
-  \svg@tempa%
-  \edef\svg@tempb{#2}%
+  \if@svg@ink@latex\else%
+    \@svg@tempswafalse%
+  \fi%
+  \edef\svg@tempa{#2}%
 %    \end{macrocode}
 % If the export with \app{Inkscape} was done with \LaTeX~support enabled, the 
 % corresponding file will be used together with \cs{input}. The necessary 
 % patches to environment \env{picture} as well as command \cs{includegraphics} 
 % are made beforehand with \cs{svg@patches}.
 %    \begin{macrocode}
-  \if@svg@ink@latex%
+  \if@svg@tempswa%
     \svg@patches{\svg@tempa}%
     \ifnum\value{svg@param@lastpage}=\z@\relax%
-      \expandafter\svg@get@lastpage\expandafter{\svg@tempb}%
+      \expandafter\svg@get@lastpage\expandafter{\svg@tempa}%
     \fi%
     \edef\svg@tempa{%
       \ifx\svg@param@pretex\relax\else%
         \noexpand\svg@param@pretex%
       \fi%
-      \noexpand\input{\svg@tempb_tex}%
+      \noexpand\input{\svg@tempa_tex}%
       \ifx\svg@param@apptex\relax\else%
         \noexpand\svg@param@apptex%
       \fi%
@@ -3213,6 +3245,7 @@ svg-extract -- Extract independent graphic files from SVG pictures
   \fi%
 }
 %    \end{macrocode}
+% \end{macro}^^A \svg@box
 % \end{macro}^^A \svg@@input
 % \end{macro}^^A \svg@input
 % \begin{macro}{\svg@wrn@scale}
@@ -3448,7 +3481,7 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % \ToDo{Markup for link to issue}[v2.03]
 %    \begin{macrocode}
     \ifx\svg@tempa\@empty%
-      \ifwindows%
+      \svg@ifwindowsdetected{%
         \def\svg@tempb{\jobname.svg.ink.ver.aux}%
         \IfFileExists{\svg@tempb}{}{%
           \ShellEscape{call "\svg@ink@exe" -V > \svg@tempb}%
@@ -3457,7 +3490,7 @@ svg-extract -- Extract independent graphic files from SVG pictures
           \closein\@inputcheck%
           \ShellEscape{del \svg@tempb}%
         }%
-      \fi%
+      }{}%
     \fi%
 %    \end{macrocode}
 % The found version is stored in \cs{svg@tempa} and parsed afterwards.
@@ -3490,6 +3523,161 @@ svg-extract -- Extract independent graphic files from SVG pictures
 %
 %
 %
+% \subsection{Handling path and file names}
+%
+% \begin{macro}{\svg@set@input@path}
+% \changes{v2.01}{2017/11/28}{new}^^A
+% \changes{v2.02}{2018/09/07}{usage of \cs{svg@deactivate@dq}}^^A
+% \begin{macro}{\svg@append@input@path}
+% \changes{v2.01}{2017/11/28}{new}^^A
+% \changes{v2.02}{2018/09/07}{avoid duplicates in \cs{input@path}}^^A
+% In order to import SVG~files from different folders, \cs{svg@set@input@path}
+% evaluates several macros, which are supposed to be used for holding different 
+% search folders. Any given path will be handled by \cs{svg@normalize@path}.
+% The optional argument can be used to append an additional search path.
+%    \begin{macrocode}
+\newcommand*\svg@set@input@path[1][]{%
+  \begingroup%
+    \svg@deactivate@dq%
+%    \end{macrocode}
+% If a path was already found and stored within \cs{svg@file@path}, it is
+% searched first and wrapped in curly braces. This is necessary for using
+% commands like \cs{input}\marg{tex~filename} within SVG~files.
+%    \begin{macrocode}
+    \ifx\svg@file@path\@empty\else%
+      \svg@normalize@path{\svg@file@path}%
+      \edef\svg@file@path{{\svg@file@path}}%
+    \fi%
+%    \end{macrocode}
+% Afterwards, several search paths are appended. If \cs{svgpath} was used, it 
+% is searched next. If nothing was found, \cs{graphicspath} is considered if 
+% defined followed by a path given in the third argument. If nothing was found
+% yet, the standard \cs{input@path} is searched last.
+%    \begin{macrocode}
+    \svg@append@input@path{\svg@file@path}{\svg@input@path}%
+    \svg@append@input@path{\svg@file@path}{\Ginput@path}%
+    \IfArgIsEmpty{#1}{}{\svg@append@input@path{\svg@file@path}{{#1}}}%
+    \svg@append@input@path{\svg@file@path}{\input@path}%
+%    \end{macrocode}
+% Finally, \cs{input@path} is set.
+%    \begin{macrocode}
+    \edef\svg@tempa{%
+      \endgroup%
+      \ifx\svg@file@path\@empty\else%
+        \def\noexpand\input@path{\svg@file@path}%
+      \fi%
+    }%
+  \svg@tempa%
+}
+%    \end{macrocode}
+% Only, if a certain search path is defined, it is added. The paths given in 
+% the first argument are compared to each path in the second argument and only 
+% new ones are added.
+%    \begin{macrocode}
+\newcommand*\svg@append@input@path[2]{%
+  \ifx#2\@undefined\else%
+    \edef\svg@tempb{#2}%
+    \expandafter\@tfor\expandafter\svg@tempa\expandafter:\expandafter=%
+        \svg@tempb\do{%
+%    \end{macrocode}
+% Passing each new path to \cs{svg@normalize@path}. If a path already exists, 
+% switch \cs{if@svg@tempswa} is set to \val{false}.
+%    \begin{macrocode}
+      \ifx\svg@tempa\@empty\else%
+        \@svg@tempswatrue%
+        \svg@normalize@path{\svg@tempa}%
+        \expandafter\@tfor\expandafter\svg@tempb\expandafter:\expandafter=%
+            #1\do{%
+          \ifx\svg@tempa\svg@tempb%
+            \@svg@tempswafalse%
+            \@break@tfor%
+          \fi%
+        }%
+        \if@svg@tempswa%
+          \edef#1{#1{\svg@tempa}}%
+        \fi%
+      \fi%
+    }%
+  \fi%
+}
+%    \end{macrocode}
+% \end{macro}^^A \svg@append@input@path
+% \end{macro}^^A \svg@set@input@path
+% \begin{macro}{\svg@get@path}
+% \changes{v2.01}{2017/11/28}{using \cs{svg@set@input@path}}^^A
+% \changes{v2.01}{2017/11/28}{using \cs{trim@spaces}}^^A
+% \begin{macro}{\if@svg@file@found}
+% \begin{macro}{\svg@file@path}
+% \begin{macro}{\svg@file@name}
+% \begin{macro}{\svg@file@base}
+% \begin{macro}{\svg@file@suffix}
+% The command \cs{svg@get@path} tries to find a given SVG~file. If the 
+% searched file wasn't found in the current path, all paths given with 
+% \cs{svgpath} are evaluated. If there was no appropriate file again, all paths
+% given by \cs{graphicspath} are examined. In the last step, a given path 
+% within the second mandatory argument is browsed. The results for file path
+% and name are stored in \cs{svg@file@path} and \cs{svg@file@name} as well as
+% the compound of both is saved in \cs{svg@file@base}.
+%    \begin{macrocode}
+\newif\if@svg@file@found
+\newcommand*\svg@file@path{}
+\newcommand*\svg@file@name{}
+\newcommand*\svg@file@base{}
+\newcommand*\svg@file@suffix{}
+\newcommand*\svg@get@path[3][\svg@file@ext]{%
+  \begingroup%
+    \svg@filename@parse[{#1}]{#2}%
+    \IfArgIsEmpty{#1}{%
+      \edef\svg@tempa{\filename@area\filename@base.\filename@ext}%
+    }{%
+      \edef\svg@tempa{\filename@area\filename@base.#1}%
+    }%
+%    \end{macrocode}
+% After calling \cs{svg@set@input@path}, all search paths are stored in
+% \cs{input@path}, a single path given in the third argument will also be 
+% considered.
+%    \begin{macrocode}
+    \svg@set@input@path[{#3}]%
+%    \end{macrocode}
+% The specified file is searched with \cs{IfFileExists}. If the file search was 
+% succesful, the macro \cs{svg@filename@parse} is called with the result.
+%    \begin{macrocode}
+    \@svg@tempswafalse%
+    \expandafter\IfFileExists\expandafter{\svg@tempa}{%
+      \expandafter\svg@quotes@check\expandafter{\svg@tempa}%
+      \if@svg@quotes@found\else%
+        \svg@quotes@remove{\@filef@und}%
+      \fi%
+      \@svg@tempswatrue%
+      \edef\@filef@und{\expandafter\trim@spaces\expandafter{\@filef@und}}%
+      \svg@filename@parse[{#1}]{\@filef@und}%
+    }{}%
+    \edef\svg@tempa{%
+      \endgroup%
+      \if@svg@tempswa%
+        \noexpand\@svg@file@foundtrue%
+        \def\noexpand\svg@file@path{\filename@area}%
+        \def\noexpand\svg@file@name{\filename@base}%
+        \def\noexpand\svg@file@base{\filename@area\filename@base}%
+      \else%
+        \noexpand\@svg@file@foundfalse%
+        \def\noexpand\svg@file@path{}%
+        \def\noexpand\svg@file@name{#2}%
+        \def\noexpand\svg@file@base{#2}%
+      \fi%
+    }%
+  \svg@tempa%
+}
+%    \end{macrocode}
+% \end{macro}^^A \svg@file@suffix
+% \end{macro}^^A \svg@file@base
+% \end{macro}^^A \svg@file@name
+% \end{macro}^^A \svg@file@path
+% \end{macro}^^A \if@svg@file@found
+% \end{macro}^^A \svg@get@path
+%
+%
+%
 % \subsection{Patches}
 %
 % \begin{macro}{\svg@patches}
@@ -3500,7 +3688,7 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % \begin{macro}{\svg@includegraphics@saved}
 % For including the export results from \app{Inkscape} with \LaTeX~support 
 % enabled, there are some patches necessary for environment \env{picture} and 
-% \cs{includegraphics}. Those patches are done with \cs{svg@patches}.
+% \cs{includegraphics}. These patches are done with \cs{svg@patches}.
 %    \begin{macrocode}
 \newcommand*\svg@picture@saved{}
 \let\svg@picture@saved\picture
@@ -3515,6 +3703,7 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % \end{macro}^^A \svg@includegraphics@saved
 % \end{macro}^^A \svg@picture@saved
 % \end{macro}^^A \svg@patches
+% \begin{macro}{\svg@picture@patched}
 % \begin{macro}{\svg@pictur@patched}
 % In order to provide the possibility specify the desired width of a graphic, 
 % the appropriate \cs{unitlength} is calculated at the beginning of the 
@@ -3559,6 +3748,7 @@ svg-extract -- Extract independent graphic files from SVG pictures
 }
 %    \end{macrocode}
 % \end{macro}^^A \svg@pictur@patched
+% \end{macro}^^A \svg@picture@patched
 % \begin{macro}{\svg@includegraphics@patched}
 % \begin{macro}{\svg@includegraphics@file}
 % The patch to \cs{includegraphics} is meant to dissolve the \app{Inkscape} bug 
@@ -3606,7 +3796,7 @@ svg-extract -- Extract independent graphic files from SVG pictures
 %
 % \iffalse
 %</body>
-%</package&base>
+%</package&main>
 %<*package&option>
 % \fi
 %
@@ -3624,7 +3814,7 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % for package \pkg{svg} in order to raise a warning message. Primarily this is 
 % done for compatibility reasons.
 %    \begin{macrocode}
-%<*base>
+%<*main>
 \DefineFamilyMember[.dummy]{SVG}
 \newcommand*\svg@dummy@key[2][]{%
   \@ifpackageloaded{svg-extract}{}{%
@@ -3654,7 +3844,7 @@ svg-extract -- Extract independent graphic files from SVG pictures
     \AfterPackage{svg-extract}{\RelaxFamilyKey[.dummy]{SVG}{#2}}%
   }%
 }
-%</base>
+%</main>
 %    \end{macrocode}
 % \end{macro}^^A \svg@dummy@key
 %
@@ -3668,9 +3858,9 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % With option \opt{extract} it can be controlled, if the extraction of 
 % independent graphic files should be done.
 %    \begin{macrocode}
-%<*base>
+%<*main>
 \svg@dummy@key[true]{extract}
-%</base>
+%</main>
 %<*extract>
 \newif\if@svgx@run
 \DefineFamilyKey{SVG}{extract}[true]{%
@@ -3724,11 +3914,11 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % is set to \val{pdf} or, if dvi output could be detected, to \val{eps} during
 % initialization.
 %    \begin{macrocode}
-%<*base>
+%<*main>
 \svg@dummy@key{extractformat}
 \svg@dummy@key[true]{pdf}
 \svg@dummy@key[true]{eps}
-%</base>
+%</main>
 %<*extract>
 \newcommand*\svgx@format{pdf}
 \ifxetex\else\ifpdf\else
@@ -3784,12 +3974,12 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % \LaTeX~file. By default, the preamble of the main document is used, which end
 % is detected at \cs{begin}|{document}|.
 %    \begin{macrocode}
-%<*base>
+%<*main>
 \svg@dummy@key{extractpreamble}
 \svg@dummy@key{preamble}
 \svg@dummy@key{extractpreambleend}
 \svg@dummy@key{end}
-%</base>
+%</main>
 %<*extract>
 \newcommand*\svgx@preamble{\jobname.\svgx@latex@ext}%
 \DefineFamilyKey{SVG}{extractpreamble}{%
@@ -3824,9 +4014,9 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % With this option, the number of \LaTeX~runs for the separate auxiliary file 
 % can be set.
 %    \begin{macrocode}
-%<*base>
+%<*main>
 \svg@dummy@key{extractruns}
-%</base>
+%</main>
 %<*extract>
 \newcounter{svgx@runs}
 \DefineFamilyKey{SVG}{extractruns}{%
@@ -3858,12 +4048,12 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % The command and facultative options for the \LaTeX~call of the separate 
 % auxiliary file. The default is set according to the currently used engine.
 %    \begin{macrocode}
-%<*base>
+%<*main>
 \svg@dummy@key{latexexe}
 \svg@dummy@key{pdflatex}
 \svg@dummy@key{latexext}
 \svg@dummy@key{latexopt}
-%</base>
+%</main>
 %<*extract>
 \ifxetex
   \newcommand*\svgx@latex@exe{xelatex}
@@ -3927,18 +4117,18 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % \begin{option}{pdftops}
 % \changes{v2.00}{2017/02/24}{deprecated}^^A
 % Options and macros for calling convert commands, which are supplied by most
-% \LaTeXe~distributions. These are used to generate all files, which are 
+% \LaTeX~distributions. These are used to generate all files, which are 
 % supported by option \opt{extractformat}, as they don't need an additional
 % application.
 %    \begin{macrocode}
-%<*base>
+%<*main>
 \svg@dummy@key{dvipsopt}
 \svg@dummy@key{pstoepsopt}
 \svg@dummy@key{pstopdfopt}
 \svg@dummy@key{pdftoepsopt}
 \svg@dummy@key{pdftopsopt}
 \svg@dummy@key{pdftops}
-%</base>
+%</main>
 %<*extract>
 \newcommand*\svgx@dvips@exe{dvips}
 \newcommand*\svgx@dvips@opt{}
@@ -3971,8 +4161,8 @@ svg-extract -- Extract independent graphic files from SVG pictures
   \FamilyKeyStateProcessed%
 }
 \DefineFamilyKey{SVG}{pdftops}{%
-  \PackageWarning{#1}{%
-    The option key `pdftops' is deprecated.\MessageBreak%
+  \PackageWarning{svg-extract}{%
+    The option key `pdftops' is deprecated. \MessageBreak%
     You should use either `pdftoepsopt' or\MessageBreak%
     `pdftopsopt' instead. See the manual for\MessageBreak%
     more. Nothing was done%
@@ -4002,8 +4192,9 @@ svg-extract -- Extract independent graphic files from SVG pictures
 %
 % \subsubsection{Invoking external application for graphic conversion}
 %
-% Besides the use of a conversion tool supplied by \LaTeXe, the applications 
-% \app{ImageMagick} and \app{Ghostscript} can be used for converting graphics.
+% Besides the use of a conversion tool supplied by the \LaTeX~distribution, 
+% the applications \app{ImageMagick} and \app{Ghostscript} can be used for 
+% converting graphics.
 %
 % \begin{option}{convert}
 % \changes{v2.00}{2017/02/24}{changed/extended}^^A
@@ -4012,9 +4203,9 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % The option \opt{convert} can be used to define, which of both applications 
 % should be use. \app{ImageMagick} is set by default.
 %    \begin{macrocode}
-%<*base>
+%<*main>
 \svg@dummy@key[true]{convert}
-%</base>
+%</main>
 %<*extract>
 \newif\if@svgx@cnv@run
 \newcommand*\svgx@cnv@cmd{}
@@ -4042,24 +4233,24 @@ svg-extract -- Extract independent graphic files from SVG pictures
     \or% gs64
       \@svgx@cnv@runtrue%
       \renewcommand*\svgx@cnv@cmd{\svgx@gs@cmd}%
-      \svgx@onlywindows{%
+      \svg@ifwindowsdetected{%
         \renewcommand*\svgx@gs@exe{gswin64c}%
-      }%
+      }{}%
     \or% gs32
       \@svgx@cnv@runtrue%
       \renewcommand*\svgx@cnv@cmd{\svgx@gs@cmd}%
-      \svgx@onlywindows{%
+      \svg@ifwindowsdetected{%
         \renewcommand*\svgx@gs@exe{gswin32c}%
-      }%
+      }{}%
     \fi%
 %    \end{macrocode}
 % In version~v1.0 the option \opt{convert} was used to set both the executable 
 % and options for the conversion application, meant for the usage of 
 % \app{ImageMagick}. This is taken into account here.
 %    \begin{macrocode}
-  \else%
+  \else% legacy option
 %    \end{macrocode}
-% Same doing like with option \opt{inkscape}.
+% Same doing like with legacy part of option \opt{inkscape}.
 %    \begin{macrocode}
     \def\svg@tempa##1-##2\@nil{%
       \IfArgIsEmpty{##2}{\def\svg@tempb{}}{%
@@ -4108,10 +4299,10 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % Option \opt{convertformat} controls the output format for converted files. It
 % is set to \val{png} by default.
 %    \begin{macrocode}
-%<*base>
+%<*main>
 \svg@dummy@key{convertformat}
 \svg@dummy@key[true]{png}
-%</base>
+%</main>
 %<*extract>
 \newcommand*\svgx@cnv@format{png}
 \DefineFamilyKey{SVG}{convertformat}{%
@@ -4143,6 +4334,7 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % \changes{v2.00}{2017/02/24}{new}^^A
 % \begin{option}{convertdensity}
 % \begin{macro}{\svgx@cnv@dpi}
+% \begin{macro}{\svgx@cnv@get@dpi}
 % The option \opt{convertdpi} is meant to define the used density during the 
 % conversion process. It can be set either for all designated output formats or 
 % targeted for a specific format. It's also possible to use something like 
@@ -4151,10 +4343,10 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % the option is used for a specific or for all output formats is recocnized by 
 % \cs{svgx@ifkeyandval}.
 %    \begin{macrocode}
-%<*base>
+%<*main>
 \svg@dummy@key{convertdpi}
 \svg@dummy@key{convertdensity}
-%</base>
+%</main>
 %<*extract>
 \newcommand*\svgx@cnv@dpi{}
 \let\svgx@cnv@dpi\relax
@@ -4175,11 +4367,151 @@ svg-extract -- Extract independent graphic files from SVG pictures
   }%
 }
 \DefineFamilyKey{SVG}{convertdensity}{\FamilyOptions{SVG}{convertdpi=#1}}
+%    \end{macrocode}
+% This macro is used to resolve a given value to set the density for the 
+% conversion. The delimited macros \cs{svg@tempa} and \cs{svg@tempb} are 
+% defined to first crop any given suffix \val{dpi} and second to split two 
+% numbers at |x|, if present. Pay attention how both macros are invoked. In the
+% end, a passed value in any of the forms \val{300}, \val{300dpi}, \val{300x400}
+% or \val{300x400dpi} and even \val{300dpix400dpi} is possible. The result is
+% stored in \cs{svg@tempa}.
+%    \begin{macrocode}
+\newcommand*\svgx@cnv@get@dpi[1]{%
+  \begingroup%
+    \def\svg@tempa##1dpi##2x##3dpi##4\@nil{%
+      \edef\svg@tempa{##1}%
+%    \end{macrocode}
+% Switch \cs{if@svg@tempswa} as \cs{iftrue} means, a valid value was found.
+%    \begin{macrocode}
+      \@svg@tempswafalse%
+%    \end{macrocode}
+% If only the first argument is a number and third is empty, a single number 
+% was given and there's nothing more to do. If the argument is something like 
+% \val{300dpix400dpi}, the third argument is the second number.
+%    \begin{macrocode}
+      \Ifnumber{##1}{%
+        \IfArgIsEmpty{##3}{\@svg@tempswatrue}{%
+          \Ifnumber{##3}{\edef\svg@tempa{##1x##3}}{}%
+        }%
+      }{}%
+      \if@svg@tempswa\else%
+        \expandafter\svg@tempb\svg@tempa xx\@nil%
+      \fi%
+    }%
+%    \end{macrocode}
+% Macro \cs{svg@tempb} splits at |x| and checks, if something valid like 
+% \val{300x400} was given. If true, the value is stored in \cs{svg@tempa}.
+%    \begin{macrocode}
+    \def\svg@tempb##1x##2x##3\@nil{%
+      \Ifstr{##3}{x}{%
+        \@svg@tempswatrue%
+        \IfArgIsEmpty{##1}{\@svg@tempswafalse}{%
+          \Ifnumber{##1}{}{\@svg@tempswafalse}%
+        }%
+        \IfArgIsEmpty{##2}{\@svg@tempswafalse}{%
+          \Ifnumber{##2}{}{\@svg@tempswafalse}%
+        }%
+        \if@svg@tempswa%
+          \edef\svg@tempa{##1x##2}%
+        \fi%
+      }{}%
+    }%
+    \IfArgIsEmpty{#1}{%
+      \let\svg@tempa\@empty%
+    }{%
+      \lowercase{\svg@tempa#1dpi#1xdpi\@nil}%
+      \if@svg@tempswa\else%
+        \let\svg@tempa\relax%
+      \fi%
+    }%
+    \edef\svg@tempb{%
+      \endgroup%
+      \ifx\svg@tempa\relax%
+        \let\noexpand\svg@tempa\noexpand\relax%
+      \else%
+        \def\noexpand\svg@tempa{\svg@tempa}%
+      \fi%
+    }%
+  \svg@tempb%
+}
 %</extract>
 %    \end{macrocode}
+% \end{macro}^^A \svgx@cnv@get@dpi
 % \end{macro}^^A \svgx@cnv@dpi
 % \end{option}^^A convertdensity
 % \end{option}^^A convertdpi
+%
+% \iffalse
+%<*extract>
+% \fi
+%
+% \begin{macro}{\svgx@setformatkey}
+% \begin{macro}{\svgx@useformatkey}
+% With \cs{svgx@setformatkey} the---maybe output format depend---keys for the 
+% conversion tools are set. First argument contains the value given to a key, 
+% second the command sequence name of the macro, to whom the value shall be 
+% allocated.
+%    \begin{macrocode}
+\newcommand*\svgx@setformatkey[2]{%
+%    \end{macrocode}
+% A key of the form \val{\meta{key}=\{\meta{format}=\meta{value}\}} is given. 
+% The desired output format can be accessed with |##1|, the value with |##2|
+% within the arguments of \cs{svgx@ifkeyandval}.
+%    \begin{macrocode}
+  \svgx@ifkeyandval{#1}{%
+    \svg@ifvalueisrelax{##2}{%
+      \expandafter\let\csname #2@##1\endcsname\relax%
+    }{%
+      \@namedef{#2@##1}{##2}%
+    }%
+%    \end{macrocode}
+% A key of the form \val{\meta{key}=\{\meta{format}=\meta{value}\}} is given.
+% The value can be used with |##1|.
+%    \begin{macrocode}
+  }{%
+    \svg@ifvalueisrelax{##1}{%
+      \expandafter\let\csname #2\endcsname\relax%
+    }{%
+      \@namedef{#2}{##1}%
+    }%
+  }%
+}
+%    \end{macrocode}
+% The command \cs{svgx@useformatkey} checks, if a format specific key was 
+% definded with \cs{svgx@setformatkey}, whereas the format is given in the 
+% second argument. If this is not the case, the setting for all output formats 
+% is used. After that, a specific key appended with a |+| can be used to do 
+% some additional stuff.
+%    \begin{macrocode}
+\newcommand*\svgx@useformatkey[3]{%
+  \scr@ifundefinedorrelax{#1@#2}{%
+    \scr@ifundefinedorrelax{#1}{}{%
+      \expandafter\ifx\csname #1\endcsname\@empty\else%
+        #3\@nameuse{#1}\space%
+      \fi%
+    }%
+    \scr@ifundefinedorrelax{#1@#2+}{}{%
+      \expandafter\ifx\csname #1@#2+\endcsname\@empty\else%
+        #3\@nameuse{#1@#2+}\space%
+      \fi%
+    }%
+  }{%
+%    \end{macrocode}
+% If a format specific key was definded, it is used.
+%    \begin{macrocode}
+    \expandafter\ifx\csname #1@#2\endcsname\@empty\else%
+      #3\@nameuse{#1@#2}\space%
+    \fi%
+  }%
+}
+%    \end{macrocode}
+% \end{macro}^^A \svgx@useformatkey
+% \end{macro}^^A \svgx@setformatkey
+%
+% \iffalse
+%</extract>
+% \fi
+%
 % \begin{option}{magickexe}
 % \changes{v2.00}{2017/02/24}{new}^^A
 % \begin{macro}{\svgx@magick@exe}
@@ -4189,19 +4521,24 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % \begin{option}{magickoperator}
 % \changes{v2.00}{2017/02/24}{new}^^A
 % \begin{macro}{\svgx@magick@opr}
+% \begin{macro}{\svgx@magick@cmd}
 % Setting the command including maybe the path to \app{ImageMagick}. The keys
 % \opt{magicksetting} and \opt{magickoperator} should be used to add optional
 % arguments before (\emph{Settings}) or after (\emph{Operators}) the input
 % file. They can either be set for all or a specific output format as like
 % option \opt{convertdpi}. For this \cs{svgx@setformatkey} is used.
 %    \begin{macrocode}
-%<*base>
+%<*main>
 \svg@dummy@key{magickexe}
 \svg@dummy@key{magicksetting}
 \svg@dummy@key{magickoperator}
-%</base>
+%</main>
 %<*extract>
-\newcommand*\svgx@magick@exe{}
+\svg@ifwindowsdetected{%
+  \newcommand*\svgx@magick@exe{magick}%
+}{%
+  \newcommand*\svgx@magick@exe{convert}%
+}
 \DefineFamilyKey{SVG}{magickexe}{%
   \renewcommand*\svgx@magick@exe{#1}%
   \FamilyKeyStateProcessed%
@@ -4216,8 +4553,17 @@ svg-extract -- Extract independent graphic files from SVG pictures
   \svgx@setformatkey{#1}{svgx@magick@opr}%
   \FamilyKeyStateProcessed%
 }
+\newcommand*\svgx@magick@cmd[3]{%
+  \svgx@magick@exe\space%
+  \svgx@useformatkey{svgx@cnv@dpi}{#3}{-density }%
+  \svgx@useformatkey{svgx@magick@set}{#3}{}%
+  "#1.#2"\space%
+  \svgx@useformatkey{svgx@magick@opr}{#3}{}%
+  "#1.#3"%
+}
 %</extract>
 %    \end{macrocode}
+% \end{macro}^^A \svgx@magick@cmd
 % \end{macro}^^A \svgx@magick@opr
 % \end{option}^^A magickoperator
 % \end{macro}^^A \svgx@magick@set
@@ -4233,19 +4579,24 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % \begin{option}{gsdevice}
 % \changes{v2.00}{2017/02/24}{new}^^A
 % \begin{macro}{\svgx@gs@device}
+% \begin{macro}{\svgx@gs@cmd}
 % Options to set the command including maybe the path to \app{Ghostscript}. As 
 % \app{Ghostscript} needs a specific device defined for different output
 % formats, the option \opt{gsdevice} can be used. It can either be set for all 
 % or a specific output format just like \opt{gsopt} in the same manner like 
 % option \opt{convertdpi}. 
 %    \begin{macrocode}
-%<*base>
+%<*main>
 \svg@dummy@key{gsexe}
 \svg@dummy@key{gsopt}
 \svg@dummy@key{gsdevice}
-%</base>
+%</main>
 %<*extract>
-\newcommand*\svgx@gs@exe{}
+\svg@ifwindowsdetected{%
+  \newcommand*\svgx@gs@exe{gswin64c}%
+}{%
+  \newcommand*\svgx@gs@exe{gs}%
+}
 \DefineFamilyKey{SVG}{gsexe}{%
   \renewcommand*\svgx@gs@exe{#1}%
   \FamilyKeyStateProcessed%
@@ -4260,8 +4611,16 @@ svg-extract -- Extract independent graphic files from SVG pictures
   \svgx@setformatkey{#1}{svgx@gs@device}%
   \FamilyKeyStateProcessed%
 }
+\newcommand*\svgx@gs@cmd[3]{%
+  \svgx@gs@exe\space-dSAFER -dBATCH -dNOPAUSE\space%
+  \svgx@useformatkey{svgx@gs@device}{#3}{-sDEVICE=}%
+  \svgx@useformatkey{svgx@cnv@dpi}{#3}{-r}%
+  \svgx@useformatkey{svgx@gs@opt}{#3}{}%
+  -sOutputFile="#1.#3"\space"#1.#2"%
+}
 %</extract>
 %    \end{macrocode}
+% \end{macro}^^A \svgx@gs@cmd
 % \end{macro}^^A \svgx@gs@device
 % \end{option}^^A gsdevice
 % \end{macro}^^A \svgx@gs@opt
@@ -4278,27 +4637,15 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % \changes{v2.02}{2018/09/07}{usage of \cs{svg@sanitize@dq}}^^A
 % \begin{option}{path}
 % \changes{v2.00}{2017/02/24}{deprecated}^^A
-% \begin{option}{extractname}
-% \changes{v2.00}{2017/02/24}{new}^^A
-% \changes{v2.02}{2018/09/07}{usage of \cs{svg@quotes@remove}}^^A
-% \begin{option}{name}
-% \changes{v2.00}{2017/02/24}{deprecated}^^A
-% \changes{v2.00}{2017/02/24}{support of \pkg{subfig} removed}^^A
 % \begin{macro}{\svgx@out@path}
-% \begin{macro}{\svgx@out@name}
-% \begin{macro}{\if@svgx@out@sec}
-% \begin{counter}{svgx@out@count}
 % The option \opt{extractpath} controls, in which folder the results both of 
 % the extraction as well as the conversion of \app{ImageMagick} or 
-% \app{Ghostscript} will be located. With option \opt{extractname} the 
-% name of the extracted and maybe converted file itself can be changed.
+% \app{Ghostscript} will be located.
 %    \begin{macrocode}
-%<*base>
+%<*main>
 \svg@dummy@key{extractpath}
 \svg@dummy@key{path}
-\svg@dummy@key{extractname}
-\svg@dummy@key{name}
-%</base>
+%</main>
 %<*extract>
 \newcommand*\svgx@out@path{}
 \DefineFamilyKey{SVG}{extractpath}{%
@@ -4328,9 +4675,33 @@ svg-extract -- Extract independent graphic files from SVG pictures
 \DefineFamilyKey{SVG}{path}{%
   \svg@deprecated@key[svg-extract]{path=#1}{extractpath=#1}%
 }
-\newcounter{svgx@out@count}
+%</extract>
+%    \end{macrocode}
+% \end{macro}^^A \svgx@out@path
+% \end{option}^^A path
+% \end{option}^^A extractpath
+% \begin{option}{extractname}
+% \changes{v2.00}{2017/02/24}{new}^^A
+% \changes{v2.02}{2018/09/07}{usage of \cs{svg@quotes@remove}}^^A
+% \begin{option}{name}
+% \changes{v2.00}{2017/02/24}{deprecated}^^A
+% \changes{v2.00}{2017/02/24}{support of \pkg{subfig} removed}^^A
+% \begin{macro}{\svgx@out@name}
+% \begin{macro}{\if@svgx@out@sec}
+% \begin{counter}{svgx@out@count}
+% \begin{macro}{\svgx@out@sec}
+% With option \opt{extractname} the name of the extracted and maybe converted 
+% file itself can be changed.
+%    \begin{macrocode}
+%<*main>
+\svg@dummy@key{extractname}
+\svg@dummy@key{name}
+%</main>
+%<*extract>
 \newcommand*\svgx@out@name{}
 \newif\if@svgx@out@sec
+\newcounter{svgx@out@count}
+\newcommand*\svgx@out@sec{unknown}
 \DefineFamilyKey{SVG}{extractname}{%
   \svg@quotes@remove[{#1}]{\svg@tempb}%
   \FamilySetNumerical{SVG}{extractname}{svg@tempa}{%
@@ -4363,14 +4734,12 @@ svg-extract -- Extract independent graphic files from SVG pictures
 }
 %</extract>
 %    \end{macrocode}
+% \end{macro}^^A \svgx@out@sec
 % \end{counter}^^A svgx@out@count
 % \end{macro}^^A \if@svgx@out@sec
 % \end{macro}^^A \svgx@out@name
-% \end{macro}^^A \svgx@out@path
 % \end{option}^^A name
 % \end{option}^^A extractname
-% \end{option}^^A path
-% \end{option}^^A extractpath
 %
 %
 %
@@ -4395,13 +4764,13 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % value \val{inherit} means, that the actual option for including is used for
 % extraction as well. This is the default setting.
 %    \begin{macrocode}
-%<*base>
+%<*main>
 \svg@dummy@key{extractwidth}
 \svg@dummy@key{extractheight}
 \svg@dummy@key{extractdistort}
 \svg@dummy@key{extractkeepaspectratio}
 \svg@dummy@key{extractscale}
-%</base>
+%</main>
 %<*extract>
 \newcommand*\svgx@param@width{\svg@param@width}
 \DefineFamilyKey{SVG}{extractwidth}{%
@@ -4463,7 +4832,7 @@ svg-extract -- Extract independent graphic files from SVG pictures
   \ifx\FamilyKeyState\FamilyKeyStateProcessed%
     \if@svg@tempswa%
       \FamilyOptions{SVG}{extractdistort=false}%
-    \else
+    \else%
       \FamilyOptions{SVG}{extractdistort=true}%
     \fi%
   \else%
@@ -4511,11 +4880,11 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % The similar hooks for executing code right before or after the graphic 
 % extraction.
 %    \begin{macrocode}
-%<*base>
+%<*main>
 \svg@dummy@key{extractpretex}
 \svg@dummy@key{extractapptex}
 \svg@dummy@key{extractpostex}
-%</base>
+%</main>
 %<*extract>
 \newcommand*\svgx@param@pretex{\svg@param@pretex}
 \DefineFamilyKey{SVG}{extractpretex}{%
@@ -4566,10 +4935,10 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % deleted. Setting \val{true} will remove all files, \val{false} won't clear 
 % any file. Additionally, a specific file list of suffixes can be given.
 %    \begin{macrocode}
-%<*base>
+%<*main>
 \svg@dummy@key[true]{clean}
 \svg@dummy@key[true]{clear}
-%</base>
+%</main>
 %<*extract>
 \newcommand*\svgx@clean{}
 \DefineFamilyKey{SVG}{clean}[true]{%
@@ -4585,7 +4954,7 @@ svg-extract -- Extract independent graphic files from SVG pictures
     \FamilyKeyStateProcessed%
   \fi%
 }
-\DefineFamilyKey{SVG}{clear}{\FamilyOptions{SVG}{clean=#1}}
+\DefineFamilyKey{SVG}{clear}[true]{\FamilyOptions{SVG}{clean=#1}}
 %</extract>
 %    \end{macrocode}
 % \end{macro}^^A \svgx@clean
@@ -4595,9 +4964,9 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % If it is desired not to include but only extract graphics with package 
 % \pkg{svg-extract}, option \opt{exclude} can be used.
 %    \begin{macrocode}
-%<*base>
+%<*main>
 \svg@dummy@key[true]{exclude}
-%</base>
+%</main>
 %<*extract>
 \DefineFamilyKey{SVG}{exclude}[true]{%
   \FamilySetBool{SVG}{exclude}{@svg@tempswa}{#1}%
@@ -4643,7 +5012,14 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % \begin{parameter}{extractpretex}
 % \begin{parameter}{extractapptex}
 % \begin{parameter}{extractruns}
+% \begin{parameter}{latexexe}
 % \begin{parameter}{latexopt}
+% \begin{parameter}{latexext}
+% \begin{parameter}{dvipsopt}
+% \begin{parameter}{pstoepsopt}
+% \begin{parameter}{pstopdfopt}
+% \begin{parameter}{pdftoepsopt}
+% \begin{parameter}{pdftopsopt}
 % \begin{parameter}{convert}
 % \begin{parameter}{convertformat}
 % \begin{parameter}{convertdpi}
@@ -4663,10 +5039,18 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % \changes{v2.02}{2018/09/07}{new}^^A
 % \begin{parameter}{extractscale}
 % \begin{parameter}{extractangle}
+% \changes{v2.02}{2018/09/07}{new}^^A
 % \begin{parameter}{extractpretex}
 % \begin{parameter}{extractapptex}
 % \begin{parameter}{extractruns}
+% \begin{parameter}{latexexe}
 % \begin{parameter}{latexopt}
+% \begin{parameter}{latexext}
+% \begin{parameter}{dvipsopt}
+% \begin{parameter}{pstoepsopt}
+% \begin{parameter}{pstopdfopt}
+% \begin{parameter}{pdftoepsopt}
+% \begin{parameter}{pdftopsopt}
 % \begin{parameter}{convert}
 % \begin{parameter}{convertformat}
 % \begin{parameter}{convertdpi}
@@ -4711,7 +5095,14 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % \end{parameter}^^A convertdpi
 % \end{parameter}^^A convertformat
 % \end{parameter}^^A convert
+% \end{parameter}^^A pdftopsopt
+% \end{parameter}^^A pdftoepsopt
+% \end{parameter}^^A pstopdfopt
+% \end{parameter}^^A pstoepsopt
+% \end{parameter}^^A dvipsopt
+% \end{parameter}^^A latexext
 % \end{parameter}^^A latexopt
+% \end{parameter}^^A latexexe
 % \end{parameter}^^A extractruns
 % \end{parameter}^^A extractapptex
 % \end{parameter}^^A extractpretex
@@ -4733,7 +5124,14 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % \end{parameter}^^A convertdpi
 % \end{parameter}^^A convertformat
 % \end{parameter}^^A convert
+% \end{parameter}^^A pdftopsopt
+% \end{parameter}^^A pdftoepsopt
+% \end{parameter}^^A pstopdfopt
+% \end{parameter}^^A pstoepsopt
+% \end{parameter}^^A dvipsopt
+% \end{parameter}^^A latexext
 % \end{parameter}^^A latexopt
+% \end{parameter}^^A latexexe
 % \end{parameter}^^A extractruns
 % \end{parameter}^^A extractapptex
 % \end{parameter}^^A extractpretex
@@ -4752,22 +5150,22 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % \changes{v2.00}{2017/02/24}{new}^^A
 % Some dummys for package \pkg{svg}.
 %    \begin{macrocode}
-%<*base>
+%<*main>
 \newcommand*\svghidepreamblestart{%
   \PackageWarning{svg}{%
     The macro `\string\svghidepreamblestart' is only meant\MessageBreak%
-    to be used together with package `svg-extract'.\MessageBreak%
+    to be used together with package `svg-extract'. \MessageBreak%
     Nevertheless, nothing will happen%
   }%
 }
 \newcommand*\svghidepreambleend{%
   \PackageWarning{svg}{%
     The macro `\string\svghidepreambleend' is only meant\MessageBreak%
-    to be used together with package `svg-extract'.\MessageBreak%
+    to be used together with package `svg-extract'. \MessageBreak%
     Nevertheless, nothing will happen%
   }%
 }
-%</base>
+%</main>
 %    \end{macrocode}
 % These two macros can be used to hide some parts of the preamble during 
 % reading the preamble of the main document.
@@ -4785,18 +5183,14 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % \subsection{Auxiliary macros}
 %
 % \begin{macro}{\svg@extract}
-% \begin{macro}{\svgx@stream@in}
-% \begin{macro}{\svgx@read@line}
-% \begin{macro}{\svgx@stream@out}
-% \begin{macro}{\if@svgx@preamble@write}
 % The macro \cs{svg@extract} does the actual job of both extracting and 
 % converting independent graphic files. Since it is necessary to run it with 
 % \file{-{}-shell-escape} enabled, the command raises a warning if it is not 
 % activated. Afterwards, the package is finished.
 %    \begin{macrocode}
-%<*base>
+%<*main>
 \newcommand*\svg@extract[1]{}
-%</base>
+%</main>
 %<*extract>
 \ifnum\pdf@shellescape=\@ne\relax\else%
   \renewcommand*\svg@extract[1]{%
@@ -4814,15 +5208,37 @@ svg-extract -- Extract independent graphic files from SVG pictures
   }%
   \expandafter\endinput%
 \fi
+%</extract>
 %    \end{macrocode}
-% If \file{-{}-shell-escape} is enabled, the command is defined with its
-% intended functionality. Some macros and a input stream as well as a output
-% stream are necessary for this.
+% \end{macro}^^A \svg@extract
+%
+% \iffalse
+%</package&body>
+%<*package&body&extract>
+% \fi
+%
+% \begin{macro}{\svgx@stream@in}
+% \begin{macro}{\svgx@read@line}
+% \begin{macro}{\svgx@stream@out}
+% \begin{macro}{\if@svgx@preamble@write}
+% Both an input stream and an output stream are necessary for this as well as a
+% token register, which is used to store all commands which should be executed
+% on shell.
 %    \begin{macrocode}
 \newread\svgx@stream@in
 \newcommand*\svgx@read@line{}
 \newwrite\svgx@stream@out
 \newif\if@svgx@preamble@write
+%    \end{macrocode}
+% \end{macro}^^A \if@svgx@preamble@write
+% \end{macro}^^A \svgx@stream@out
+% \end{macro}^^A \svgx@read@line
+% \end{macro}^^A \svgx@stream@in
+% \begin{macro}{\svg@extract}
+% If flag \file{-{}-shell-escape} is enabled, the command is defined with its
+% intended functionality. It runs all necessary processes to extract and
+% convert grahic files.
+%    \begin{macrocode}
 \renewcommand*\svg@extract[1]{%
 %    \end{macrocode}
 % If option \opt{extract} is enabled\dots
@@ -5263,26 +5679,13 @@ svg-extract -- Extract independent graphic files from SVG pictures
     }%
   \fi%
 }
-%</extract>
 %    \end{macrocode}
-% \end{macro}^^A \if@svgx@preamble@write
-% \end{macro}^^A \svgx@stream@out
-% \end{macro}^^A \svgx@read@line
-% \end{macro}^^A \svgx@stream@in
 % \end{macro}^^A \svg@extract
-%
-% \iffalse
-%</package&body>
-%<*package&extract&body>
-% \fi
-%
 % \begin{macro}{\svgx@get@out@sec}
-% \begin{macro}{\svgx@out@sec}
 % The macro \cs{svgx@get@out@sec} reads all sectioning counters in order to 
 % get the numbering of the current sectioning level. The value is stored in 
 % \cs{svgx@out@sec}.
 %    \begin{macrocode}
-\newcommand*\svgx@out@sec{unknown}
 \newcommand*\svgx@get@out@sec{%
   \begingroup%
     \def\svg@tempa{}%
@@ -5306,11 +5709,10 @@ svg-extract -- Extract independent graphic files from SVG pictures
   \svg@tempb%
 }
 %    \end{macrocode}
-% \end{macro}^^A \svgx@out@sec
 % \end{macro}^^A \svgx@get@out@sec
 % \begin{macro}{\svgx@documentclass}
 % \begin{macro}{\if@svgx@classfound}
-% This delimited macro is used to find a occurrence of \cs{documentclass} 
+% This delimited macro is used to find the occurrence of \cs{documentclass} 
 % within a read in line. The delinmiter \cs{documentclass} is used twice in
 % order to ignore the possible occurrence of white space or anything else right
 % before \cs{documentclass}.
@@ -5425,53 +5827,13 @@ svg-extract -- Extract independent graphic files from SVG pictures
 %    \end{macrocode}
 % \end{macro}^^A \svgx@cnv@get@informat
 % \end{macro}^^A \svgx@cnv@informat
-% \begin{macro}{\svgx@magick@cmd}
-% \begin{macro}{\svgx@gs@cmd}
-% Depending on option \opt{convert}, one of these two macros is actually used
-% by \cs{svgx@cnv@cmd}. For invoking the conversion process, the required 
-% platform-dependent executable is set, if nothing was set by a package option.
-%    \begin{macrocode}
-\ifx\svgx@magick@exe\@empty
-  \ifwindows
-    \renewcommand*\svgx@magick@exe{magick}
-  \else
-    \renewcommand*\svgx@magick@exe{convert}
-  \fi
-\fi
-\newcommand*\svgx@magick@cmd[3]{%
-  \svgx@magick@exe\space%
-  \svgx@useformatkey{svgx@cnv@dpi}{#3}{-density }%
-  \svgx@useformatkey{svgx@magick@set}{#3}{}%
-  "#1.#2"\space%
-  \svgx@useformatkey{svgx@magick@opr}{#3}{}%
-  "#1.#3"%
-}
-%    \end{macrocode}
-%    \begin{macrocode}
-\ifx\svgx@gs@exe\@empty
-  \ifwindows
-    \renewcommand*\svgx@gs@exe{gswin64c}
-  \else
-    \renewcommand*\svgx@gs@exe{gs}
-  \fi
-\fi
-\newcommand*\svgx@gs@cmd[3]{%
-  \svgx@gs@exe\space-dSAFER -dBATCH -dNOPAUSE\space%
-  \svgx@useformatkey{svgx@gs@device}{#3}{-sDEVICE=}%
-  \svgx@useformatkey{svgx@cnv@dpi}{#3}{-r}%
-  \svgx@useformatkey{svgx@gs@opt}{#3}{}%
-  -sOutputFile="#1.#3"\space"#1.#2"%
-}
-%    \end{macrocode}
-% \end{macro}^^A \svgx@gs@cmd
-% \end{macro}^^A \svgx@magick@cmd
 % \begin{macro}{\svgx@move}
 % If the file doesn't exist
 %    \begin{macrocode}
 \newcommand*\svgx@move[3]{%
   \begingroup%
     \IfFileExists{"#1".#2}{%
-      \svg@shell@move{#1.#2}{#3#1.#2}%
+      \svg@shell@mv{#1.#2}{#3#1.#2}%
     }{%
       \edef\svg@tempa{#2}%
       \@svg@tempswafalse%
@@ -5508,177 +5870,10 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % \end{macro}^^A \svgx@move
 %
 % \iffalse
-%</package&extract&body>
-%<*package&extract&option>
+%</package&body&extract>
+%<*package&standalone&extract>
 % \fi
 %
-% \begin{macro}{\svgx@ifinlist}
-% Check, if the first argument is included in a comma-separated list in the 
-% second argument. Keep in mind that the first argument is not expanded at all, 
-% the second one exactly once. 
-%    \begin{macrocode}
-\newcommand*\svgx@ifinlist[2]{%
-  \begingroup%
-    \def\svg@tempa##1,#1,##2\@nil{%
-      \IfArgIsEmpty{##2}{%
-        \aftergroup\@secondoftwo%
-      }{%
-        \aftergroup\@firstoftwo%
-      }%
-    }%
-    \expandafter\svg@tempa\expandafter,#2,#1,\@nil%
-  \endgroup%
-}
-%    \end{macrocode}
-% \end{macro}^^A \svgx@ifinlist
-% \begin{macro}{\svgx@onlywindows}
-% Do only some stuff, if Windows was detected.
-%    \begin{macrocode}
-\newcommand*\svgx@onlywindows[1]{}
-\AfterPackage*{ifplatform}{\renewcommand*\svgx@onlywindows[1]{\ifwindows#1\fi}}
-%    \end{macrocode}
-% \end{macro}^^A \svgx@onlywindows
-% \begin{macro}{\svgx@ifkeyandval}
-% It is checked whether a key was given as \val{\meta{key}=\meta{value}} or 
-% like \val{\meta{key}=\{\meta{format}=\meta{value}\}}.
-%    \begin{macrocode}
-\newcommand*\svgx@ifkeyandval[3]{%
-  \def\svg@tempa##1=##2=##3\@nil{\Ifstr{##3}{=}{#2}{#3}}%
-  \svg@tempa#1==\@nil%
-}
-%    \end{macrocode}
-% \end{macro}^^A \svgx@ifkeyandval
-% \begin{macro}{\svgx@cnv@get@dpi}
-% This macro is used to resolve a given value to set the density for the 
-% conversion. The delimited macros \cs{svg@tempa} and \cs{svg@tempb} are 
-% defined to first crop any given suffix \val{dpi} and second to split two 
-% numbers at |x|, if present. Pay attention how both macros are invoked. In the
-% end, a passed value in any of the forms \val{300}, \val{300dpi}, \val{300x400}
-% or \val{300x400dpi} and even \val{300dpix400dpi} is possible. The result is
-% stored in \cs{svg@tempa}.
-%    \begin{macrocode}
-\newcommand*\svgx@cnv@get@dpi[1]{%
-  \begingroup%
-    \def\svg@tempa##1dpi##2x##3dpi##4\@nil{%
-      \edef\svg@tempa{##1}%
-%    \end{macrocode}
-% Switch \cs{if@svg@tempswa} as \cs{iftrue} means, a valid value was found.
-%    \begin{macrocode}
-      \@svg@tempswafalse%
-%    \end{macrocode}
-% If only the first argument is a number and third is empty, a single number 
-% was given and there's nothing more to do. If the argument is something like 
-% \val{300dpix400dpi}, the third argument is the second number.
-%    \begin{macrocode}
-      \Ifnumber{##1}{%
-        \IfArgIsEmpty{##3}{\@svg@tempswatrue}{%
-          \Ifnumber{##3}{\edef\svg@tempa{##1x##3}}{}%
-        }%
-      }{}%
-      \if@svg@tempswa\else%
-        \expandafter\svg@tempb\svg@tempa xx\@nil%
-      \fi%
-    }%
-%    \end{macrocode}
-% Macro \cs{svg@tempb} splits at |x| and checks, if something valid like 
-% \val{300x400} was given. If true, the value is stored in \cs{svg@tempa}.
-%    \begin{macrocode}
-    \def\svg@tempb##1x##2x##3\@nil{%
-      \Ifstr{##3}{x}{%
-        \@svg@tempswatrue%
-        \IfArgIsEmpty{##1}{\@svg@tempswafalse}{%
-          \Ifnumber{##1}{}{\@svg@tempswafalse}%
-        }%
-        \IfArgIsEmpty{##2}{\@svg@tempswafalse}{%
-          \Ifnumber{##2}{}{\@svg@tempswafalse}%
-        }%
-        \if@svg@tempswa%
-          \edef\svg@tempa{##1x##2}%
-        \fi%
-      }{}%
-    }%
-    \IfArgIsEmpty{#1}{%
-      \let\svg@tempa\@empty%
-    }{%
-      \lowercase{\svg@tempa#1dpi#1xdpi\@nil}%
-      \if@svg@tempswa\else%
-        \let\svg@tempa\relax%
-      \fi%
-    }%
-    \edef\svg@tempb{%
-      \endgroup%
-      \ifx\svg@tempa\relax%
-        \let\noexpand\svg@tempa\noexpand\relax%
-      \else%
-        \def\noexpand\svg@tempa{\svg@tempa}%
-      \fi%
-    }%
-  \svg@tempb%
-}
-%    \end{macrocode}
-% \end{macro}^^A \svgx@cnv@get@dpi
-% \begin{macro}{\svgx@setformatkey}
-% \begin{macro}{\svgx@useformatkey}
-% With \cs{svgx@setformatkey} the---maybe output format depend---keys for the 
-% conversion tools are set. First argument contains the value given to a key, 
-% second the command sequence name of the macro, to whom the value shall be 
-% allocated.
-%    \begin{macrocode}
-\newcommand*\svgx@setformatkey[2]{%
-%    \end{macrocode}
-% A key of the form \val{\meta{key}=\{\meta{format}=\meta{value}\}} is given. 
-% The desired output format can be accessed with |##1|, the value with |##2|
-% within the arguments of \cs{svgx@ifkeyandval}.
-%    \begin{macrocode}
-  \svgx@ifkeyandval{#1}{%
-    \svg@ifvalueisrelax{##2}{%
-      \expandafter\let\csname #2@##1\endcsname\relax%
-    }{%
-      \@namedef{#2@##1}{##2}%
-    }%
-%    \end{macrocode}
-% A key of the form \val{\meta{key}=\{\meta{format}=\meta{value}\}} is given.
-% The value can be used with |##1|.
-%    \begin{macrocode}
-  }{%
-    \svg@ifvalueisrelax{##1}{%
-      \expandafter\let\csname #2\endcsname\relax%
-    }{%
-      \@namedef{#2}{##1}%
-    }%
-  }%
-}
-%    \end{macrocode}
-% The command \cs{svgx@useformatkey} checks, if a format specific key was 
-% definded with \cs{svgx@setformatkey}, whereas the format is given in the 
-% second argument. If this is not the case, the setting for all output formats 
-% is used. After that, a specific key appended with a |+| can be used to do 
-% some additional stuff.
-%    \begin{macrocode}
-\newcommand*\svgx@useformatkey[3]{%
-  \scr@ifundefinedorrelax{#1@#2}{%
-    \scr@ifundefinedorrelax{#1}{}{%
-      \expandafter\ifx\csname #1\endcsname\@empty\else%
-        #3\@nameuse{#1}\space%
-      \fi%
-    }%
-    \scr@ifundefinedorrelax{#1@#2+}{}{%
-      \expandafter\ifx\csname #1@#2+\endcsname\@empty\else%
-        #3\@nameuse{#1@#2+}\space%
-      \fi%
-    }%
-  }{%
-%    \end{macrocode}
-% If this a format specific key was definded, it is used.
-%    \begin{macrocode}
-    \expandafter\ifx\csname #1@#2\endcsname\@empty\else%
-      #3\@nameuse{#1@#2}\space%
-    \fi%
-  }%
-}
-%    \end{macrocode}
-% \end{macro}^^A \svgx@useformatkey
-% \end{macro}^^A \svgx@setformatkey
 %
 %
 %
@@ -5796,7 +5991,7 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % \end{macro}^^A \svgxoutputbox
 %
 % \iffalse
-%</package&extract&option>
+%</package&standalone&extract>
 %<*package&option>
 % \fi
 %
@@ -5807,13 +6002,13 @@ svg-extract -- Extract independent graphic files from SVG pictures
 % Setting the default options and processing the given ones during when loading 
 % the packages.
 %    \begin{macrocode}
-%<*base>
+%<*main>
 \FamilyExecuteOptions{SVG}{%
-  inkscape=true,inkscapeversion=auto,inkscapepath=basesubdir,
+  inkscape=true,inkscapeversion=auto,inkscapepath=basesubdir,%
   inkscapelatex=true,inkscapearea=drawing,distort=false,%
   usexcolor=true,usetransparent=true%
 }
-%</base>
+%</main>
 %<*extract>
 \FamilyExecuteOptions{SVG}{%
   extract=true,extractpath=basesubdir,%
@@ -5829,77 +6024,6 @@ svg-extract -- Extract independent graphic files from SVG pictures
 %
 % \iffalse
 %</package&option>
-%<*package&base&body>
-% \fi
-%
-%
-%
-% \section{Macros for file access}
-%
-% Finally, platform dependend macros for creating directories as well as moving 
-% and deleting files are provided, if \file{-{}-shell-escape} is enabled. Only 
-% then package \pkg{ifplatform} is only used in order to do not raise a warning.
-%    \begin{macrocode}
-\ifnum\pdf@shellescape=\@ne\relax\else%
-  \expandafter\endinput%
-\fi
-\RequirePackage{ifplatform}[2017/10/13]
-%    \end{macrocode}
-% \begin{macro}{\svg@shell@mkdir}
-% \begin{macro}{\svg@shell@@mkdir}
-% \begin{macro}{\svg@shell@mv}
-% \begin{macro}{\svg@shell@@mv}
-% \begin{macro}{\svg@shell@rm}
-% \begin{macro}{\svg@shell@@rm}
-% The platform dependent commands for file access.
-%    \begin{macrocode}
-\ifwindows
-  \newcommand*\svg@shell@@mkdir[1]{if not exist "#1" mkdir "#1"}
-  \newcommand*\svg@shell@@mv{move}
-  \newcommand*\svg@shell@@rm{del}
-\else
-  \newcommand*\svg@shell@@mkdir[1]{mkdir -p "#1"}
-  \newcommand*\svg@shell@@mv{mv}
-  \newcommand*\svg@shell@@rm{rm}
-\fi
-%    \end{macrocode}
-% A directory should only be created, if it isn't the current working directory.
-%    \begin{macrocode}
-\newcommand*\svg@shell@mkdir[1]{%
-  \begingroup%
-    \svg@quotes@remove[{#1}]{\svg@tempa}%
-    \@svg@tempswatrue%
-    \Ifstr{\svg@tempa}{}{\@svg@tempswafalse}{%
-    \Ifstr{\svg@tempa}{./}{\@svg@tempswafalse}{%
-    }}%
-    \if@svg@tempswa%
-      \ShellEscape{\svg@shell@@mkdir{\svg@tempa}}%
-    \fi%
-  \endgroup%
-}
-%    \end{macrocode}
-% Commands for moving and deleting files.
-%    \begin{macrocode}
-\newcommand*\svg@shell@move[2]{%
-  \ShellEscape{\svg@shell@@mv\space"#1"\space"#2"}%
-}
-\newcommand*\svg@shell@rm[1]{%
-  \ShellEscape{\svg@shell@@rm\space"#1"}%
-}
-%    \end{macrocode}
-% \end{macro}^^A \svg@shell@@rm
-% \end{macro}^^A \svg@shell@rm
-% \end{macro}^^A \svg@shell@@mv
-% \end{macro}^^A \svg@shell@mv
-% \end{macro}^^A \svg@shell@@mkdir
-% \end{macro}^^A \svg@shell@mkdir
-% At the very end, the catcodes are restored.
-%    \begin{macrocode}
-\svg@catcodecodes@restore
-%    \end{macrocode}
-%
-% \iffalse
-%</package&base&body>
 % \fi
 %
 % \Finale