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Diffstat (limited to 'Master/texmf-dist/doc/generic/mfpic/changes.txt')
| -rw-r--r-- | Master/texmf-dist/doc/generic/mfpic/changes.txt | 2865 |
1 files changed, 314 insertions, 2551 deletions
diff --git a/Master/texmf-dist/doc/generic/mfpic/changes.txt b/Master/texmf-dist/doc/generic/mfpic/changes.txt index a362e6d95a1..faedb731f78 100644 --- a/Master/texmf-dist/doc/generic/mfpic/changes.txt +++ b/Master/texmf-dist/doc/generic/mfpic/changes.txt @@ -1,38 +1,19 @@ -%%% File: changes.tex -%%% A part of mfpic 0.7a beta 2004/04/16 +%%% File: changes.txt +%%% A part of mfpic 0.9 2006/05/26 %%% - Changes History. - -VERSION 0.0.x: - -Development versions. Never released. - + Summaries of changes. VERSION 0.1: First version released to network, 30 June 1992. -VERSION 0.1.x: - -Test versions for new features, fixes, etc. None of them -were released for general distribution. Many new features added, bugs -worked out, code cleaned up. - - VERSION 0.2: Second version released to network, 7 Sept. 1992. (Still had 0.1.13.1 -version number in code---oops!) - - -VERSIONS 0.2.x: - -Resumed serious development of TeX code: Sun 7 Nov. 1993. Much work -done on graphbase code in meantime, especially by Geoffrey Tobin. The -primary task at this point was a radical rewrite of the TeX code, -including defining a prefix form for shading macros. +version number in code---oops!) Many new features added, bugs +worked out, code cleaned up. VERSION 0.2.5 of Wed 10 Nov. 1993: @@ -40,53 +21,33 @@ VERSION 0.2.5 of Wed 10 Nov. 1993: Bug fix release Primarily work by Geoffrey Tobin. -REVISION 0.2.(5.0.)9 of Mon 28 Feb. 1994: - -Intended to release as version 0.3 to network. Release delayed, as -picture operator code is overhauled to cope with arbitrary overlays: 11 -Mar. 1994. - -Horizontal offset by unwanted glue is traced to missing comment -characters: Fri 29 Apr. 1994. - -Vertical displacement of shading reported for MF modes with -nonrectangular pixels: Mon 23 May 1994. - - REVISION 0.2.5.1 of Wed 13 July 1994: Bug fix release Corrected "unxconv" bug which remained in version 0.2.5's graphbase.mf. -Alpha Test Versions. - VERSION 0.2.9 Alpha of Thu 11 August 1994: A test release prior to any official version 0.3, is ready for intrepid users. Introduces coordinate transforms, and other novelties. -UPDATE 0.2.9.1 Alpha} of Thu 8 September 1994: Fixes a bug in \sclosed -and a bug in \white, corrects some omissions and typos in the -documentation, and adds the \shadewd, \hatchwd, \lhatch and \rhatch -macros. +UPDATE 0.2.9.1 Alpha} of Thu 8 September 1994: +Fixes a bug in \sclosed and a bug in \white, corrects some omissions and +typos in the documentation, and adds the \shadewd, \hatchwd, \lhatch and +\rhatch macros. -UPDATE 0.2.9.2 Alpha of Fri 24 February 1995: Rearranges some code in -mfpic.tex; little else to report. In 0.2.9.3 Alpha of Thu 21 March 1995: -GT renamed \fill to \gfill, in order to avoid conflict with the LaTeX -\fill macro. +Renamed \fill to \gfill, in order to avoid conflict with the LaTeX \fill +macro. UPDATE 0.2.9.4 Alpha of Thu 13 April 1995: -Contributes a test for an existing definition of each macro in -mfpic.tex, - Renaming of \label to \tlabel, and \caption to \tcaption, in order to avoid conflict with the LaTeX macros with those names. @@ -98,17 +59,9 @@ because user-defined functions provide more power, and function plotting macros were added that accept Metafont function names instead of Metafont expressions. -Renaming of graphbase.mf and graphdoc.tex to grafbase.mf and grafdoc.tex -to emphasise incompatible upgrade of mfpic Metafont macros, and to -provide $8+3$ filenames for ms-dos users. - -Added \hbox{} to start of \mfpic, for some now forgotten reason to do -with formatting, I suppose. VERSION 0.2.9.5 Alfa of Wed 19 July 1995: -Replaces TeX dimensions by font dimensions for economy. - Renames \mfcmd to \mfsrc for clarity. Renames \wedge to \sector to avoid conflict with the character name @@ -120,19 +73,11 @@ Abolishes \plrpoint, \plrlines, \plrcurve and \plrcyclic as redundant specializations. The meaning of \turtle is changed to a Cartesian form, for flexibility. -Changed objects.tex to use \tmtitle, \plr, \mfsrc, \gfill, -\gclear, \tlabel, and \tcaption. - Rendering macros redesigned, and \setrender introduced. Coordinate transforms in grafbase.mf made slightly more robust. Begin an attempt to make grafbase.mf compatible with John Hobby's MetaPost drawing program. -Added comment in grafbase.mf about dangers of text arguments, - -Updated the documentation files grafdoc.tex, Acknowl.tex, README2, -MANIFEST and mfpicdoc.tex. - UPDATE 0.2.9.6 Alfa of Mon 24 July 1995: @@ -141,317 +86,21 @@ Contributes \thatch which provides hatching by lines at any angle. Modifications to \pen, \shadewd and \hatchwd, along with changes to grafbase.mf to make drawing, shading and hatching more independent. -Decided that the behavior of \point inside a connect environment was -bizarre, hazardous, and an unnecessary complication to the mfpic macros, -so \point has reverted to its original, obvious and simple definition. - Renamed \rotate to \rotatepath. Also renamed the affine transform macros, so that they no longer use the -`s' of the present tense, which could be mistaken for a plural. (The -sample files did not hitherto use the affine transform macros, so the -damage may be slight.) - -Modified grafbase.mf to use a transform stack to implement local -Metafont coordinate systems; this may be more robust, and extensible to -other graphic localizations. - - -UPDATE 0.2.9.7 alfa, Fri 18 August 1995: - -Changes to pictures.tex: - -Replaced version from "0.2.9.1 alpha Thu 8 September 1994" to -"0.2.9.7 alfa Sat 5 August 1995". - -Added a comment containing an ASCII sketch of the commutative diagram -example, and indicated where each arc is drawn. - -Replaced all uses of \label by \tlabel, \caption by \tcaption, -\fill by \gfill, \wedge by \sector. - -Added some uses of \mftitle. - -Moved one arrow in the commutative diagram, to illustrate the b -option of the \arrow command. - -Simplified Metafont algebraic expressions used in function plots, so -that they use fewer * operators. - -Edited the example of \turtle to allow for the new semantics of -rectangular coordinates. - -Captioned all eight figures, with figure numbers and descriptions. - -Deleted an instance of "\vfill\eject". - -Increased the complexity of the seventh figure, to illustrate use of -hatching, closing, point, dotted curves, and so forth. - -Made figures seven and eight twice as large. - - -Changes to lapictures.tex: - -Renamed version from "0.2.9.1 alpha Thu 8 September 1994" to -"0.2.9.7 alfa Thu 17 August 1995". - -Magnified the LaTeX pictures document to the same scale as the plain TeX -one, using the \mag command. - -Set \fboxsep to zero. - -Initialized arrow heads using \headshape. - -Commented out the center environment around the commutative diagram -example. - -Placed \fbox commands around each picture. - -Other changes as in pictures.tex. - - -Extensive changes to grafbase.mf: - -Turned warningcheck off. - -Used an explicit designsize. - -Debugging refined. - -Rearranged some code. - -Made ClipOn boolean (instead of numeric). - -Added maparr macro. - -Eliminated mistake of using hround in graph-to-pixel coordinate -transformation. - -Remarked that clipping can distort paths by changing their points. - -Tried to clip on character boundary. - -Added Metafont vector coordinate transform, to complement affine -transform for geometric points. - -Write message when drawing nominal Metafont bounding box. - -Changed beginmfpic Metafont macro to take only the character code as -an argument. - -Introduced global Metafont transform stack, for coordinate changes. - -Replaced currentpen by drawpen in path stroking. - -Changed ourfill and ourunfill to use an undelimited path argument. - -Added setdotpath, ourdot. - -Changed onedot to use dotpath instead of a scaled shape path. - -Edited tightbbox and bbox to take a path described in pixel -coordinates as their first argument, instead of one in graph -coordinates. - -Added tbbox. - -Did some more saving of local variables in Metafont functions. - -Deleted lhatchf and rhatchf. - -Added thatchf, thatch, hhatch and xhatch. - -Rewrote lhatch and rhatch to use thatch. - -Edited dotted, renamed it dashed. - -Added a separate dotted Metafont macro. - -Changed head from a def to a vardef; edited head to clarify its -code. - -Altered axis tic mark macros, xmarks and ymarks to ensure that the -tic marks are always at right angles to their axes, irrespective of -coordinate transforms. - -Added a grid command. - -Renamed mkellipse to ellipse, deleted old ellipse. - -Renamed mkarc to arc. +`s' of the present tense, which could be mistaken for a plural. UPDATE 0.2.9.8 alfa, Mon 11 September 1995: -Added to Acknowl.tex. - - -In mfpic.tex: - -Add comment about use of \ignorespaces to skip spaces in user's -document after \mfpic command. - Retain line separations of user's document's mfpic environment when writing Metafont file. This prevents long Metafont commands from exceeding Metafont's input buffer. -UPDATE 0.2.9.9 alfa, Thu 5 October 1995: - -In mfpicdoc.tex: - -changed \wedge references to \sector, and \rotateabout to -\rotatearound. - -Added some logical formatting commands to mfpicdoc.tex. - -Included much more information about recent changes (from 0.2.9.1 to -0.2.9.8). - - -In mfpic.tex: - -Renamed \@graph to \@graphfont for identifiability. - - -UPDATE 0.2.9.10 alfa, Fri 6 October 1995: - -In grafbase.mf: - -Deleted spurious argument to \xyswap. - -Changed \store to take two arguments, and to logically bracket the -second, which is the path description. - - -UPDATE 0.2.9.11 alfa, Fri 24 November 1995: - -In grafbase.mf: - -Fixed X-coordinate rounding bug in thatchf. - - -REVISION 0.2.10.0 alfa, Wed 17 January 1996: - -In mfpic.tex and grafbase.mf: - -Changed names of five Metafont macros: xslanted, yslanted, zslanted, -boosted, and xyswapped to xslant, yslant, zslant, boost, xyswap. - - -In grafbase.mf: - -Replaced my dash and dot code by Frank Michielsen's, modified to use -suffix arguments instead of text for l-values. - -Also, the dotsize argument to dotted is now effective. - -Deleted the unused ourdraw, ourfill, ourunfill macros. - -Simplified the dotpath and onedot initialization code; it was too -baroque. - -Added a pixdot macro as a shorthand for picdot(active_plane,onedot,p). - -Replaced the apoint (w, a) macro by bpoint (w, b) which is a -shorthand for fullcircle scaled w shifted b. - -Gratuitously added Bruce Leban's overlay macros from the METAFONTbook, -page 295. - -Cosmetic reformatting of source. - - -In Acknowl.tex: - -Add Frank Michielsen's name. - - -REVISION 0.2.10.1 alfa, Thu 18 January 1996: - -In grafbase.mf: - -Fixed wrong declaration in dotted of dp from path to pair. - - -REVISION 0.2.10.2 alfa, Tue 23 January 1996: - -Editing to restore compatibility with older graphbase.mf versions used -with xfig's (actually, transfig's fig2dev's) mf driver (genmf.c). - - -In mfpic.tex: - -Edited writing of setting of Metafont variables xscale and yscale to -omit factor of unitlen. - -Changed references to drawwd to penwd in \drawpen. - - -In grafbase.mf: - -Add declarations and initializations of these variables: unitlen, -xscale, yscale, xneg, xpos, yneg, ypos. - -Renamed drawwd to its former name, penwd. - -Again made penwd, hdwdr, hdten into newinternal variables, and -assign them using interim. - -Definition of ztr now includes unitlen as a factor in the x and y -scaling. - -mfpicenv and endmfpicenv defined as empty statements. - -bounds defined for setting xneg, xpos, yneg, ypos. - -beginchar now includes unitlen. - - -REVISION 0.2.10.3 alfa, Tue 6 February 1996: - -In mfpicdoc.tex: - -Updated documentation to cover to \dotted, \dotsize and \dotspace -on the one hand, and \dashed, \dashlen and \dashspace on the other. - - -REVISION 0.2.10.4 alfa, Mon 26 February 1996: - -In mfpic.tex: - -Let internal \sim@gdef (simple global definition) stand for \gdef. - -Added \newgdef for new global definitions with a test for previous -definition. - -Replaced use of \obeylines by \mfpicobeylines, to use \endgraf instead -of \par, because LaTeX(2e) redefines \par with unpleasant effects on -Metafont files when using LaTeX's center environment. (To wit, LaTeX's -center environment would write \@@par to the Metafont file. - -Defined \preservelines to call \mfpicobeylines then set -\newlinechar to control-M (carriage return). - -Use \preservelines in \mfsrc, thus bypassing (I hope) the mischief -arising from LaTeX in the center environment. - -Wrapped replacement text of \mfsrc in a layer of braces. - -Added descriptive comments for \tlabel and \tcaption. - -Set TeX's primitives \leftskip and \rightskip to zero dimension -inside \tcaption, so as to protect typesetting of diagrams' captions -from unwanted effects. - - REVISION 0.2.10.5 alfa, Sat 9 March 1996: -Minor reformatting of mfpic.tex, including adding spaces, adding -comment characters at end of more lines, and renaming some internal -register variables. - Introduced \polyline as an alternative name for \lines. In order to avoid repetition of side-effects, changed \tcaption to use @@ -460,25 +109,10 @@ In order to avoid repetition of side-effects, changed \tcaption to use REVISION 0.2.10.6 alfa, (two hours later) on Sat 9 March 1996: -Updated mfpic.tex and documentation files to incorporate improvements -by Dan Luecking: - -a loading check that automatically saves and restores the catcode of -`@'; - -the name of the graph base is now stored in a macro near the top of -mfpic.tex; - -\leavevmode is now moved [GT has, for now, commented it out -completely]; - -\polyline introduced as a synonym for \lines; a \polygon figure -has been introduced; +\polygon figure has been introduced; \\ specifies explicit line breaks in tlabels and tcaptions; -\onelevel causes one level of expansion in an \edef; - \savepic and \copypic allow saving, use and copying of an entire mfpic picture, including its tcaptions and tlabels. @@ -490,514 +124,171 @@ Petrovic. REVISION 0.2.10.7 alfa, Sat 28 March 1996: First release via Geoffrey Tobin's School's local anon ftp site: - ftp.ee.latrobe.edu.au : pub/gt/mfpic -Added skip-pix.tex file, which tests whether TeX's \leftskip -primitive breaks up mfpic's typesetting of diagrams. Fortunately, it -seems not. - REVISION 0.2.10.8 alfa, Tue 26 May 1996: Second, and bug fix, release via Geoffrey Tobin's anonymous ftp area. -Due to change in syntax of \store to take the path command as a second -argument (which made coding of mfpic.tex easier), objects.tex and -part of mfpicdoc.tex needed to be amended. Reported by Miroslav Dont -(Thu 16 May 1996). - -Descriptions of LaTeX environments clarified to emphasise that mfpic's -plain TeX command names may be used in LaTeX. This is useful to know -when designing automatic code generators. Reported by Van Snyder (Fri -17 May 1996). - -Added hyphenation to \MFbook in documentation macro file header.tex. - -Noticed that the method by which the line breaks in the TeX file are -copied into the Metafont file can cause command arguments to be omitted -from the Metafont file unless at least the left brace (immediately -before the arguments) occurs on the same line as the command. Corrected -objects.tex to obey this restriction. Also noted this phenomenon in -mfpicdoc.tex. Effect reported by Miroslav Dont (Thu 16 May 1996). - -Updated lapictures.tex to LaTeX2e. - -Added LaTeX2e logo to header.tex. - REVISION 0.3.0 alpha, 1998: Numbers jump a lot from here because I (Dan Luecking) have been lax in -keeping track of changes. First version with support for Metapost. -(Yes!) - -Translated grafbase.mf to grafbase.mp, retaining all(?) -functionality. Now any(?) .mf file created by a recent mfpic can be -run through Metapost to produce a PostScript picture. Lots of problems -with Metapost capacity, especially with shading. It is apparently a lot -more memory intensive to hold thousands of circular paths in memory than -hundreds of thousands of pixels. Ultimately recoded the grafbase.mp -shading macros to simply calculate a gray colored fill. - -Added grafbase functions sin, cos, and their inverses invsin, -etc., that compute in radian measure. Also tan and cot. +keeping track of changes. First version with support for Metapost. Now +any(?) .mf file created by a recent mfpic can be run through Metapost +to produce a PostScript picture. -Wrote mppicdoc.tex, which can be TeX-ed alone or input from -mfpicdoc.tex. Should probably combine the two documents. Made small -changes to header.tex: added logos for pdfTeX and pdfLaTeX. Changed -The macros \MF and \MP to use small capitals. Minor modifications to -\LaTeX and \LaTeXe +Added functions sin, cos, and their inverses invsin, +etc., that compute in radian measure. Also tan and cot. REVISION 0.3.8 alpha, 1999: -Color has been added. Standard colors for lines/curves (drawcolor), +Color has been added. Default colors for lines/curves (drawcolor), fills (fillcolor), hatch patterns (hatchcolor), and arrowheads -(headcolor) added to grafbase.mp. Corresponding macros in mppic.tex -for setting these colors. Optional arguments for color added to \gfill, -\draw, \arrow, and all the hatching macros. A new macro \polkadot -creates polkadot fill patterns. +(headcolor). Optional arguments for color added to \gfill, \draw, +\arrow, and all the hatching macros. A new macro \polkadot creates +polkadot fill patterns. Changed some of the commands for setting dimensions so that they actually worked, and so they are local to mfpic environments. Added support for LaTeX2e's \usepackage command and options. Added -graphics inclusion code, summoning the following packages: epsf for -plain TeX or LaTeX209, graphics for LaTeX2e and pdfLaTeX, the macro -files supp-pdf.tex and supp-mis.tex from the ConTeXt distribution -for plain \pdfTeX). Added code to detect which TeX format was in use. +graphics inclusion code. Added code to detect which TeX format was in +use. REVISION 0.3.9 alpha, 2000: -Altered almost all messages written to the log file or the terminal to -announce they were from mfpic. Altered format detection code to test -against both \UndEfInEd _and_ \relax (lest some previous package -convert certain commands to \relax using the \csname style test). -Minor change to definition of \circle to avoid error messages in LaTeX. +Minor change to definition of \circle to avoid error messages in LaTeX. Changed the graphic placement code so that it tests for the existence of -the graphic first (to avoid all those error messages from epsf, -graphics, etc., on the first pass, or when Metapost fails to make a -graphic). - -Tried to find and change code in grafbase where we could inadvertently -divide by zero. Added another closure prefix \uclosed and its -corresponding grafbase support, to close a path smoothly (meaning -simply matching directions at both ends), but keep the original curve -Unchanged. The current (\sclosed simply closes with ..cycle which -alters the original curve. +the graphic first. REVISION 0.3.10 alpha, 2000: -Put mfpic version, date and package name into macros for use in -messages. Decided the package name is "mfpic" if it is input as -mfpic.tex or mfpic.sty, otherwise mppic, regardless of whether the -metafont or metapost option is used. There are four files -m[fp]ic.[sty,tex], which simply set the package name and input -mppic.tex if necessary. Also put this version and date info into -strings in grafbase.mf. - -Added changes contributed by Jaromir Kuben (Thanks!): An option -centercaptions and command \centercaptions to center the lines in a -\tcaption. Also \nocentercaptions; these can be used at any point to -turn the feature on and off. Improvements (corrections?) to the code -that positions text labels (so that) labels that extend outside the -picture are correctly taken into account. Changes to the positioning -parameters in \tlabel. Both c and b now take into account the -depth of the text b puts the absolute bottom of the text in line with -the point. A new parameter B to align the baseline of the text with -the point. Jaromir also contributed several corrections to grafbase.mp -(mostly inadvertently introduced by me, DHL). +Added changes contributed by Jaromir Kuben: An option centercaptions +and command \centercaptions to center the lines in a \tcaption. Also +\nocentercaptions. Improvements to the code that positions text labels +(so that) c and b now take into account the depth of the text. A new +parameter B to align the baseline of the text with the point. Added option dvipsnames to allow color names as in the dvips header -color.pro. Requires file dvipsnam.mp. Added grafbase.mp macros: -cmyk, RGB, gray and rgb to convert from the indicated color space -to Metapost's internal color space (which is rgb, so the last is a -no-op). In plain TeX the command \dvipsnames can be used in the -preamble (before \opengraphsfile). - -Added macro \ConTeXt to header.tex, a macro \opt for style of -LaTeX2e option names. Changed \prog to typeset its argument in -sans serif font. Changed \tmtitle in mppic.tex so it _doesn't_ ignore -following spaces (it ended with \mftitle which invokes \ignorespaces). +color.pro. Later removed and made default. Added color functions +cmyk, RGB, gray and rgb. Added functions tanh, its inverse atanh, and additional trig functions secd, sec, cscd, csc, atan, invtan. Made log a synonym for ln. Added complex variables functions Arg, cis, zexp and Log. -Changed all trig, hyperbolic, exp, log, etc, to use syntax "vardef -<name> primary X" so as to match (I hope) as close as possible the -behavior of the built-in sind and cosd. - -Changed \do@ptparami so that it does not strip too many braces. This -was done by changing the line \redef\@ptparami to be parameterless -(delaying the reading of the optional parameter). The old code read the -optional parameter, replaced it, then read it again. This strips two -levels of braces, making two levels of bracing necessary to hide an -enclosed bracket: - \draw[{{\color[cmyk]{1,1,0,0}}}]... -(Such use of LaTeX color macros has not yet been added, but might be one -day.) This strategy is closer to LaTeX's optional parameter handling -technique. - REVISION 0.3.11 alpha, 2000: -Added \plot (usage \plot[<size>,<separation>]{<shape>}...) similar to -\dotted except: -1) explicit shape required (shapes Triangle, Square, Circle, Plus, - Cross, Star, SolidTriangle, SolidSquare, SolidCircle). -2) initial size and separation are 2pt and 5pt. -3) Size is governed by \plotsymbolsize, and separation by - \plotsymbolspace. The dimension \plotsymbolsize corresponds - roughly to the _average_ diameter of the shape. - -Added code to mkfcn and parafcn so that the end of the curve falls -on the given endpoint (even if bst doesn't go evenly into bmax-bmin). -Also ensure the loop parameter doesn't exceed infinity. Also avoid -problems if the sign of bmax-bmin differs from that of bst. +Added \plot similar to \dotted but these shapes can be placed: + Triangle, Square, Circle, Plus, Cross, Star, SolidTriangle, + SolidSquare, or SolidCircle REVISION 0.3.12 alpha, 2000: -Save and restore catcodes of certain punctuation (@.,:;!?{}`'=/- and -parentheses), as well as spaces, setting punctuation to 12 while reading -mppic.tex to ensure the right stuff gets written to the .log and .mp -files. - Added macro \datafile to read a file of number pairs and create the -polygonal path connecting them. Works like the other figure macros -(i.e., may take any prefixes). - -Added options clip (to clip all pictures to the specified dimensions), -truebbox (to give the metapost output file the true bounding box rather -than the one specified in the \mfpic arguments), and debug (write -debugging info to terminal and log file). Command forms: \clipmfpic -turns it on \noclipmfpic turns it off. Similarly, \usetruebbox and -\notruebbox. For debug we can define \mfpicdebug before loading -mfpic.tex (which will turn on debugging information written prior to -option processing), and in the rest of a source file, \mfpicdebugtrue -and \mfpicdebugfalse will switch it on and off. - -%%% Revised after here, adding spaces before and after code and math -%%% removing blank lines, stray TeX markup, reformatting paragraphs, etc. +polygonal path connecting them. + +Added options clip, truebbox, and debug. +Command forms: \clipmfpic, \noclipmfpic, \usetruebbox, +\notruebbox, \mfpicdebugtrue, and \mfpicdebugfalse. + Changed names of various commands to a more imperative form: -\usingmetapost becomes \usemetapost, \usingmetafont becomes -\usemetafont, \dvipsnames becomes \usedvipsnames, etc. Also changed -name of option centercaptions to centeredcaptions. Changed many -internal names, prefixing most with "mfp@", inserting "@mfp@" in the -\if... commands. +\usemetapost, \usemetafont, +Changed name of option centercaptions to centeredcaptions. REVISION 0.3.13 alpha, 2000: -\datafile rewritten, now ignores leading blank lines and comments, and -won't gag on commented out EOLs. Code somewhat modularized. +\datafile now ignores leading blank lines and comments, +and won't gag on commented out EOLs. -Went back to technique of expanding argument of \tcaption twice -(caveat emptor). +Went back to technique of expanding argument of \tcaption twice: +caveat emptor. New command \plotdata reads a data file and draws one (polygonal) path for each non-blank sequence of lines in the data file. Exits when a pair of blank lines is encountered (or EOF). Cycles through six different drawing styles for successive curves. User may elect different colors (with \coloredlines), different symbols (\pointedlines), or -different dashing patterns (\dashedlines). NOT a figure macro, (i.e., -no prefixes). +different dashing patterns (\dashedlines). New command \using affects what \datafile and \plotdata write to -the .mf output. Default is \using{#1 #2 #3}{#1,#2}, meaning: of two -or more space delimited numbers, write the first two separated by a -comma. - -Brand new dashing and dotting code in grafbase. A complete -reorganization of the code made dashing faster. That was followed by -another reorganization and the gendashed (generalized dashes) command -added to grafbase. Now any dashing pattern can be drawn. A dashing -pattern, ptrn, consists of three arrays: ptrn.start[], ptrn.rep[], -ptrn.finish[]. The command gendashed (ptrn) p; draws the path p -beginning with ptrn.start, repeating ptrn.rep, and ending with -ptrn.finish. The arrays are numeric and specify the lengths of dashes -and gaps. A command - dashpat (suffix name) (text dims) -takes a comma separated list dims, assigns them to the array name.rep, -and computes reasonable name.start and name.finish. +the .mf output. \gendashed{<pattern>}... is a generalized dashing command; <pattern> is the name of a dashing pattern. - \dashpat{<name>}{<dim1>,<dim2>,...,<dim2n>} -will create a dashing pattern with the specified name. Here <dim1>, -etc., are dimensions specifying the length of dashes (odd positions) and -the length of gaps (even positions). A dash length of 0 is written as a -dot. Patterns dashtype0 through dashtype5 are predefined and used by -\plotdata when \dashedlines is selected. - -Commented out several macros in grafbase that were never used -elsewhere, and also some that were only used once (replacing that use by -the replacement text). I haven't done any comparisons, but for the macro -dotted, avoiding two expansions out of four (what it used to take to -draw a dot) might be a significant time saving when thousands of dots -are being drawn. - -Added a couple of rounding commands to the .mf shading code. All dots -now pixel aligned, looks infinitely better. +\dashpat{<name>}{<dim1>,<dim2>,...,<dim2n>} creates a dashing pattern +with the specified name. -Corrections to mkfcn and parafcn, they could still have overshot the -value of bmax. +All dots now pixel aligned in shading. Looks infinitely better. -Removed all spaces (commenting out EOL's) in mppic.tex. It can now be -\input in horizontal mode without generating any spaces (even without -switching to \nullfont). Removed \nullfont. +Added Diamond and SolidDiamond to the symbols available. -Changed some more internal names. Added Diamond and SolidDiamond to -the symbols available to \plot and \plotsymbol. - -At some point (perhaps this or the last revision) I added a command -\fcncurve that draws a function (i.e., curve doesn't double back) if -the x-values are unique and listed in order. It has an optional -tension-like argument. Added an optional tension parameter to \curve, -also. +A command \fcncurve that draws a function (i.e., curve doesn't double +back) if the x-values are unique and listed in order. REVISION 0.3.14 alpha, 2000: -Added \@@tlabel to write label text to output file between btex and -etex. Added mplabels to make \tlabel use it instead of original -\@tlabel. Commands \usemplabels and \nomplabels to turn the option -on and off. Added third part to the optional argument of \tlabel to -rotate the text (ignored in \@tlabel) so \tlabel[Bl45] will place -the left baseline at the point and rotate 45 degrees around that point. +Added optiom mplabels to make \tlabel write btex ... etex groups +to the .mp file. Commands \usemplabels and \nomplabels. +Added third part to the optional argument of \tlabel to +rotate the text. Ignored without mplabels New macro \mfpdatacomment so that \datafile and \plotdata can now -have their comment character reset. A side effect is that `%'s in the -data file will be recognized. Commands \makepercentother and +have their comment character reset. Commands \makepercentother and \makepercentcomment created to allow the user to use `%' in \using arguments. Gave \plotdata the ability to cycle through 8 colors or 9 symbols -(instead of only 6), but still only 6 dash patterns. (Too many makes for -confusion. Only increased colors and symbols because it was so easy.) - -Added framing macro. On the first TeX run (indicated by nonexistence of -.tfm or fig.1), now show a visible rectangle of appropriate size with -the figure number inside. For plain TeX users, the internal code is made -available in the user level command \framed[<fgap>]{...}. Parameters -\framegap and \framethickness control the default appearance. -(Internal code for undefined figures uses \framegap =-\framethickness -so not to take up any extra space.) - -Added some error checking: when option mplabels is selected without -metapost, issue error message and ignore. Same when \usemetapost is -used after \opengraphsfile. Remove dvipsnames option, making all -dvips color names always available to mfpic. - -Multiple changes to documentation: Added \GS for Ghostscript and \sc -for small caps to header.tex. Folded all the new macros and their -descriptions into mfpicdoc.tex. Still keeping mppicdoc.tex for more -detail on differences between the Metafont and Metapost support. - -Made some small additions to MFobjs.tex and MPobjs.tex to better -illustrate some new features. Adjusted pictures.tex and -lapictures.tex so they produce the same output and no overfull boxes. -Changed TeXMPobjs.tex and LTXMPobjs.tex so that they work better in -pdfTeX and pdfLaTeX, resetting \pdfpageheight and \pdfpagewidth (which -otherwise get magnified by \mag=1200). - -Replaced curves.dat with curves1.dat and curves2.dat to better -show features of \plotdata. - -Changed the default for \using to \using{#1 #2 #3}{(#1,#2)}, -(redundant parentheses). - -Added \fdef, which seemed to be documented, but not defined! Changed -the format slightly and adjusted the documentation to reflect that. +(instead of only 6). + +Draw a frame for figures not yet created. Add command \frame for users. + +Added \fdef, which seemed to be documented (see Update 0.2.9.4 above), +but somehow not defined. Changed \savepic: Now use \newpic{\foo} to allocate a box, \savepic{\foo} to store the next picture, and \usepic{\foo} to copy -it. Now more like LaTeX's system of save boxes. +it. REVISION 0.3.15 alpha, 2000: -In grafbase, changed secd and cscd so that abs(temp) < -nottoosmall is tested instead of temp itself (which was incorrect when -temp < -nottoosmall). Renamed dashed to DASHED to make primitive -dashed available to power users. Added some error checking to dashing -code. Added save in several places in *fcn commands. Changed -hatching code in grafbase.mp so that all (even those not used by mfpic) -respect hatchcolor. - -Redefined parafcn so it can call mkfcn like all the other function -drawing commands. - Added \mfpverbtex to write verbatimtex block to .mp file. -Changed a few \newdef-s and \newlets to \def and \let to keep -ConTeXt from complaining. Affected commands are \rotate, \mirror, -\scale and \grid. Changed code for date written to output file for -same reason. - Changed \newpic to \newsavepic to more closely parallel LaTeX's \newsavebox command. Allow plotting of a number in a data file against its sequence position with \using{...}{...\sequence...}. -Rename \mf@gobble to \mfp@gobble. Move the definition of \newdef -earlier and use it more (didn't catch any new conflicts). - -Changed \rotatepath from a \@modmac to a \@closmac (even though it -doesn't close anything), because that makes its behavior vis-a-vis -rendering more in line with what one might expect. Actually, closing and -rotating both simply accept a path, change it, and pass the result on. -So both should be handled the same. - -Added contributed macro \pointdef: \pointdef{A}(1,3) makes \A expand -to (1,3), with \Ax and \Ay expanding -to 1 and 3, respectively. - -Provide a directory structure to the distribution. Rename file mppic.tex -to mfpic.tex and provide files mppic.tex, mfpic.sty, and mppic.sty -as wrappers to input it. Made Metapost the default when mppic.* are -used. - -Add some error correction to dashpat: force an even number of -dimensions. - - -REVISION 0.3.16 alpha, 2000: - -In grafbase: - -Change name of glabel (in grafbase.mp) to gblabel so as not to -conflict with glabel from graph.mp in the standard Metapost -distribution. Adjusted mfpic.tex accordingly. - -Correct the change to dashpat made in 0.3.15: don't force dashing when -there are fewer than 2 dimensions in the list. Instead, this is the -signal to draw a solid curve. - -Save the variables dashes and dots used in the macros DASHED and -dotted. - -Uncomment three macros commented out in 0.3.13: tightbbox, tbbox and -bbox. Though these are not used in any other macro, but they might -nevertheless be useful to users of grafbase. - -Change the dashtype[] arrays that mix dots and dashes so they begin -with a dot. This will produce a dot at the ends of the curve. This just -looks better than a partial dash. - -Added unbound.tex updating mfpic info in "TeX Unbound". - -Restored mf-revu.tex, somewhat altering its formatting and correcting a -TeX error. - -Changed \endconnect so it tests for its use in LaTeX as an -environment and if so issues \aftergroup\@startfigtrue and -\aftergroup\@imrendtrue to bypass the LaTeX-supplied \endgroup. -Added a similar test to \endmfpic to set \@ignoretrue. +Added \pointdef: \pointdef{A}(1,3) makes \A expand to (1,3), with +\Ax and \Ay expanding to 1 and 3, respectively. REVISION 0.4.0 beta, Aug 2000: -Released to CTAN. Removed mppic.*, package is named mfpic regardless -of whether MF or MP support is needed. +Released to CTAN. REVISION 0.4.01 beta, Nov/Dec 2000: -Sergei V. Znamenskii reported (and mostly solved) an incompatibility -with AmSTeX using amsppt style if mfpic.tex is input after the -\documentstyle[amsppt] command. The file amstex.tex loads the dummy -font, setting 22 font dimensions. Then amsppt.sty loads some more fonts. -It appears that if font loading intervenes, mfpic.tex cannot add extra -font dimension parameters to dummy to use with \newfdim. Solved by -changing - \font\@dummy=dummy -to - \font\@dummy=dummy scaled 1002 -in mfpic.tex - -Also corrected code that purported to detect LaTeX when in fact AmSTeX -was in use. - -Added documentation of a bug in supp-pdf.tex which requires -\usemetapost (as well as \usepackage[metapost]{mfpic}) to come before -\usepackage[french]{babel} when running pdfLaTeX. The conflict was -reported by Pascal Chantriaux. - -Changed \tmtitle and \mftitle so they read the argument as a token -list and write it to .mf file and .log file without expansion. Simple -things like "\'" expand to quite long expressions in LaTeX2e. - -Added commands \MFPdebugwrite (to write its argument only in presence -of debug option), \MFPmsg (as a synonym for \immediate\write16) and -\MFPICmsg (to write its argument preceded by "MFpic: ". - -Added \restoreCODE to shorten all the lines in \mfpic-package that -restore the category codes of punctuation. - -Added a few new debug lines in response to previous failure to detect -\AmSTeX. - -Rewrote \mfp@now (which generates a time-stamp for the output file) to -use only 2 \count registers instead of three. - -Added \dimendef\mfp@scratch=255 for scratch use instead having -\dimen255 hard coded. This will make changes easier should use of -\dimen255 cause any problem. - -Added \penwd as a synonym for \pen (to be more in line with -\shadewd, etc.). - -Removed redundant parentheses from default \using. - -Changed internal command \mfp@rwdata, which is responsible for reading -and writing in the \datafile and \plotdata commands, so that it -outputs - polyline (false)((x_1,y_1),(x_2,y_2),...,(x_n,y_n)); -instead of - (x_1,y_1)--(x_2,y_2)--...--(x_n,y_n); -The intent is to have a better interface if ever we get 3D support -started. For example, polyline calls textpairs which processes the -list of coordinates. In a hypothetical 3D environment, we'd need to -change only \using to write triples, and then textpairs could choose -to run some command that processes triples instead of pairs. - -Changed use of \unpreservelines in \plotdata, etc., to the expicit -resetting of the category of ascii 13 (which was its only purpose -anyway). - -Added macros \xaxis[<hlen>] and \yaxis[<hlen>] with the obvious -meanings. Plan on adding something like \leftaxis, \bottomaxis, etc., -with changes to \xmarks and \ymarks for putting tics on them. -(Haven't figured out the best interface yet.) - -Added some new error messages. Rewrote almost all error messages, adding -linebreaks. Added command \mfp@errmsg to format error messages and set -the \errhelp tokens. +Generate a time-stamp for the output file. +Added \penwd as a synonym for \pen. -REVISION 0.4.02 beta, Jan 2001: - -Backward comparability was inadvertently destroyed when \curve was -given an optional parameter and the definition of curve in grafbase.m? -was changed. Any .mf file created by using \curve with an older -version of mfpic would give curve the wrong number of parameters for the -new grafbase files. I renamed the new curve to tcurve and gave curve -a definition equivalent to its old one. - - -REVISION 0.4.03 beta, Feb 2001: - -Corrected a typo in vardef thegblabel: had zz for a parameter, but -used z in the replacement text. I am surprised \tlabel _ever_ worked -when the mplabels option was selected. +Added macros \xaxis[<hlen>] and \yaxis[<hlen>] with the obvious +meanings. REVISION 0.4.04 beta, Mar 2001: @@ -1006,375 +297,85 @@ Added \smoothdata[<tension>] to cause \datafile and \plotdata to draw smooth curves with optional tension setting. And \unsmoothdata to restore the default. -Changed \pointedlines to work as documented (causing \plotdata to -issue the equivalent of \plot{<symbol>}) and added \datapointsonly to -behave as it used to (causing \plotdata to issue the equivalent of -\plotnodes, plotting only the data points). -Some documentation changes: added info that something like -\xmarks{-4 step 2 until 6} is valid. +REVISION 0.4.10 beta, May 2001: +Renamed \framed to \mfpframed, similarly: \mfpframegap and +\mfpframethickness. -REVISION 0.4.05 beta, Mar 2001: +\tlabeloffset{<hadj>}{<vadj>} and \tlabelsep{<dimen>} added to apply +offsets to label placement. -Changed vc=vt; to vc:=vt; in function clipsto. When used on an -array of paths, the original caused an "Inconsistent equation" error -on the second iteration. Fortunately, this does not come up in mfpic -except for very advanced users. +Added macros for drawing axes along the borders of the picture, and +tickmarks along those axes. Syntax eventually settled on in 0.4.16: + \axis{<axis>}, draws an axis (\axis{x} almost equivalent to \xaxis). + Allowed values for <axis>: x, y, l, b, r, and t. + \axismargin{<axis>}{<num>}, sets the axis margin (lbrt only) + \setaxismargins{<num>}{<num>}{<num>}{<num>}, sets all 4 margins. + \setallaxismargins{<num>}, sets all 4 margins. -REVISION 0.4.10 beta, May 2001: + \xmarks, \ymarks, \lmarks, \bmarks, \rmarks, \tmarks, place the marks. + \setaxismarks{<axis>}{<pos>}, sets position of tic marks. Allowed + <pos> are inside, outside, ontop, onbottom, and centered. 2 + abbreviations: \setxmarks and \setymarks. + \setbordermarks{<pos>}{<pos>}{<pos>}{<pos>} + \setallbordermarks{<pos>} -Renamed \fileversion and \filedate to \mfpfileversion and -\mfpfiledate to avoid name clashes with other packages. Most packages -only use these macros for messages while loading, but mfpic writes the -information as a header comment in the output file - -Added \mfp@ifnextchar, a clone of LaTeX's \@ifnextchar, and -redefined the macros \do@ptparam and \alt@ptparam in terms of it. -Copied LaTeX's code to eat one space after a command into the macro -\eatspacedef. - -Added \mfp@delim as an all-purpose argument delimiter. For debugging -purposes, its definition is to issue an error message saying it -shouldn't ever be triggered. - -Slight rewrite of \mfp@now and \mfp@today. - -Renamed \framed and related macros by prefixing mfp or mfp@. Some -formats and packages (ConTeXt, for example) have a \framed macro. Now -\mfpframed _can_ be used, and _must_ be used if \framed already -exists (as in ConTeXt). Replaced \framegap and \framethickness -with \mfpframegap and \mfpframethickness. If \framed is already -defined, the old version is kept and the user may not get the effect -described. - -Slight change to what is printed in the .dvi file when a mfpic detects -that Metafont or Metapost has not been run, or the figure is absent. - -New dimensions: \tlabel@hadj, \tlabel@vadj and \tlabel@sep for -shifting \tlabel text. The first is a horizontal adjustment, the second -vertical, added to every label. The third shifts the label directly away -from the point of placement (unless optional argument "[Bc]" or -"[cc]" is used). A label is shifted by \tlabel@sep downward when the -`t' parameter is found, upward for `b', rightward for `l' and -leftward for `r'. The first two dimensions can be set with a new macro -\adjustlabels{<hadj>}{<vadj>} (name later changed to \tlabeljustify, -and the third with \tlabelsep{<dimen>}. Need to do it this way because -under mplabels they need to write the information to the output file. - -Added \expandafter before \@render\fi in several places. This now -appears not to be needed, but the \fi following \@render caused -problems with some experimental versions of optional argument handling. - -Added the following macros for drawing axes along the borders of the -picture: - \leftaxis - \rightaxis - \topaxis - \bottomaxis - \bottomleftaxes - \borderaxes - \leftaxisshift - \rightaxisshift - \topaxisshift - \bottomaxisshift -The first four draw the appropriate axis (no head by default), the last -four set an amount (in graph units) to shift the axis inward. - -For tick marks we have: - \lmarks - \rmarks - \tmarks - \bmarks - \lmarksposition - \rmarksposition - \tmarksposition - \bmarksposition - \xmarksposition - \ymarksposition -The first four set the positions (and optionally size) of the tick marks -on the corresponding axis, the next six determine if the marks are -centered, or on one side of the axis. They take an argument which must -be one of inside, outside, centered, ontop, onbottom, -onleft, or onright. For side axes the default is inside, while -for x- and y-axes it is centered. - -For arrowheads on the side axis we have \sideaxishead which takes a -dimension argument and sets the length of the arrowhead. To turn heads -off again set the length to 0pt. - -Added \gridlines to draw a regular grid of lines. It's syntax is the -same as that of \grid. Changed the behavior of \grid so that instead -of starting at the left and bottom, it draws the grid centered on the -origin of the graph coordinates. - -Changed most of the \if-tests so that if an incorrect optional parameter -is used, the default behavior will be seen. For example, \function -takes an optional argument of [s] or [p] with s the default. The -code had been: - \if ##1s true\else false\fi -and I changed it to - \if ##1p false\else true\fi -so for the typographical error \function[o], the user will get the effect -of the default s. - -Added the command \labeljustify to change the default justification -of text labels. For example, \labeljustify[cr] makes the default -[cr] instead of [Bl]. - -When truebbox is in effect, but mfpic detects that Metapost has not -been run, truebbox is turned off for each picture. Before, this was -global, now it is local (so that it doesn't affect a new \opengraphsfile -command, even though mfpic does not officially support more than one -\opengraphsfile commands per file). + +For arrowheads on the side axis, a dimesion \sideheadlen was added. + +Added \gridlines to draw a regular grid of lines. + +Added \tlabeljustify to change the default justification of text +labels. Added the command \tlabels (note the plural). It has one mandatory argument which contains a concatenation of arguments for one or more -\tlabel commands. These arguments may (but need not be) separated by -spaces or new-lines. +\tlabel commands. -Replaced all occurrences of \@labeldim, which had been \let equal to -\mfp@scratch, to the explicit control sequence \mfp@scratch. This was -to avoid confusion that could have been caused by changing one of them, -not realizing they should be the same. +REVISIONs 0.4.11--15 beta, July 2001: +Added support for multiline labels under mplabels. -REVISIONs 0.4.11--15 beta, July 2001: +Added ability to create a curve surrounding some text: +\tlabelrect creates a rectangle, with optionally rounded corners, +\tlabeloval creates an ellipse with aspect ratio the same as the block + of text (optionally multiplied by a given factor), +\tlabelellipse creates an ellipse with an optional aspect ratio + (default = 1), +\tlablecircle is \tlabelellipse[1]. -Restored a lost backward comparability: I stored the (Metapost) -primitive meaning of dashed in the command dashed_ and made dashed -synonymous with DASHED. Power users will have to use dashed_ if they -wish to invoke that primitive after loading grafbase.mp - -Added \MFPICwarn in addition to \MFPICmsg and \mfp@errmsg. Added -"MFpic error: " to the front of all mfpic generated error messages. -Introduced \on@line (from LaTeX) to place the line number in warnings. - -Removed many more spaces and eols from mfpic.tex (lest it be input -with spaces or eols active). Added some spaces between a command and -`!' lest the latter have category 11. - -Changed name of \restoreCODE (and others) to \MFPrestorecode (etc.) -after running across a package which defined \restorecode. Introduced -\@xp (from AMSLaTeX) for \expandafter. Removed saving of the current -font as \@torig, since we no longer change to \nullfont. - -Added test for equality to \relax in \testdef. Removed \newlet -(later put it back), \sim@def and \sim@gdef as they are not used (any -longer). The latter two were used once each and those were changed. - -Changed handling of \if@mfp@metafont and \if@mfp@metapost to ensure -they are kept mutually exclusive. Changed handling of -\@if@mfp@beforefileopen from a simple \if...\else...\fi to saving the -alternatives in a macro and then issuing the macro after the test. -Changed \mfp@clip to make it global if issued before \opengraphsfile. -Redid \mfp@truebbox to ensure it is global, but leave an out so that -\@mfp@truebboxtrue/false could be set locally. Made similar -changes to mplabels. - -Removed \unpreservelines from \mfsrc since grouping restores EOLs. -Also made \mfsrc check that a .mf/p file has been opened. - -Removed the definition of \mf@bsl since it is not used (any longer). - -Delayed the definition of \mfp@data until \@mfpic@graf@macs. -Introduce the hook \mfp@additions, to be expanded last in -\@mfpic@graf@macs. - -Changed the name of macro \mfplinestyle to \mfplinetype and the -\count register \mfp@linestyle to \mfp@linetype. -Changed name of \missinggraphfileerror to \nooutputfileerror. -Changed name of \adjustlabels to \tlabeloffset. -Changed name of \labeljustify to \tlabeljustify. - -Try to support multiline labels even in the case of mplabels by writing -appropriate definition of `\\' to the .mp. - -Changed definition of \mfp@scratch from \dimension255 to a register -defined by \newdimen. - -Added ability to create a curve surrounding some text: macro -\textboundary creates a rectangle, with optionally rounded corners, -\textoval creates an ellipse with aspect ratio the same as the block of -text, \textellipse creates an ellipse with a given aspect ratio, -\textcircle is \textellipse with aspect ratio of 1. TeX measures -the text and transmits the information to Metafont. - -New macro \axislabels. This takes a letter indicating the axis, an +Added \axislabels. This takes a letter indicating the axis, an optional justification parameter (as in \tlabel) and a comma separated -list of TeX text and numbers. The numbers indicating the position on the -given axis to place the text. Since side axes may be offset from the -edge of the graph, the utility \mfp@addto is used to add the boundary -coordinate (one of the parameters of \mfpic) to the appropriate offset, -returning the result in graph units for use in a \tlabel command. The -default justification depends on the axis. It is chosen so that the text -ends up outside the border axes, below the x-axis and left of the -y-axis. - -Color additions: added \tlabelcolor and grafbase color variable -tlabelcolor to control color of Metapost placed text; added -\backgroundcolor to set the color variable background, the color used -by \gclear and by all plain Metapost unfill operations. Had to -rewrite the various color setting macros since, till now, all assumed -the color variable name ended with the string "color". - -Changed the macros introduced in 0.4.10 or previous that controlled the -position of the side axis. Now instead of saying - \leftaxisshift{<num>} -one says - \axismargin{l}{<num>}. -One can set all 4 margins at once with - \setaxismargins{<num>}{<num>}{<num>}{<num>}. -or all margins to the same number with - \setallaxismargins{<num>}. - -A similar change was made to the setting of the axis marks position -(i.e., inside, outside or centered). Instead of - \lmarksposition{inside} -one writes - \setaxismarks{l}{inside}. -One can also set the position of all the border marks at once with -\setbordermarks, or all border marks to the same position with -\setallbordermarks. - -Command \drawaxes added: it takes a comma separated list of -letters chosen from x, y, l, b, r and t, and draws the specified -axes. Later renamed to \doaxes, and commas omitted. - -Added optional parameter to \plotdata and \datafile which -has the form p or s<num>. "[p]" causes a polygonal curve to be -plotted and "[s<num>]" causes a smooth curve to be drawn, with the -given number as the tension. The number may be omitted, and then -grafbase's value of curvetension (default 1.0) will be used. Any -other letter or none is the same as [p]. Internally, the optional -parameter is passed to \mfp@rwdata, which now, of course, takes -parameters. Along with this, \smoothdata was revamped to simply -change the default optional parameter, rather than set a switch. - -When option metapost is selected, each mfpic environment writes the -current font to the output file (in verbtimtex) to have at least the -chance (under mplabels) to match the fonts that TeX would use in -tlabels. - -Framing code: in addition to \framed or \mfpframed, we now have a -LaTeX environment: \begin{mfpframe}...\end{mfpframe} or, in plain TeX, -a command group \mfpframe...\endmfpframe. This is actually recommended -(over the first form) if the user wishes to frame an mfpic environment. -This ensures that category codes are not prematurely set by reading the -whole picture as an argument. - -Changes to grafbase: - -Moved interim warningcheck:=0; after mode_setup because mode_setup -sets it to 1. Now that warningcheck is correctly set, we can change -the test of parameters in secd, etc., from comparing with nottoosmall, -to comparing with reallysmall. - -Streamlined minpair and maxpair. - -Define transform vtr on its own in setztr rather than only the macro -vconv being defined (in terms of ztr). Define ztr in terms of vtr -(the "right way to do things", said the linear algebra teacher). -Remove definition of invztr and use inverse ztr the few times necessary. - -Remove the "complicated zconv" entirely. - -Added plain Metapost's image command to grafbase.mf. - -Changed the command executed when clipall is true to clipto instead -of clipsto. - -Added textboundary, textoval and textellipse to put paths around -text. Only the size and center point of the text is passed by mfpic, not -the actual text. These implement the mfpic commands \textboundary, etc. - -Added parameters pair label_adjust and numeric label_sep. -These are used in grafbase.mp for shifting labels. They are also -used there and in grafbase.mf for positioning and sizing textboundary, -textoval and textellipse. - -Added test for ClipOn to dashing code, plotsymbol and plotnodes. - -arrowdraw now checks for hlen > 0 before drawing head. - -Complete rewrite of axes code and drawing of hash marks on axes. Four -new axes added leftaxis, etc. - -Changed code for grid so it is fitted to the coordinates: integer -multiples of xspace and yspace are plotted. Added gridlines. - -Changed arcppp in grafbase for more robustness (I hope) and better -result on small values of sweep. +list of TeX text and numbers. +Added \tlabelcolor to control color of Metapost placed text. +Added \backgroundcolor to set the color variable background, the +color used by \gclear. -REVISION 0.4.16 beta, July 28--30 2001: +Added \doaxes. It takes a set of letters chosen from {xylbrt}, and +draws the specified axes. --- Changed name of \textboundary to \tlabelboundary and then - \tlabelrect. --- Changed name of \textoval to \tlabeloval. --- Changed name of \textellipse to \tlabelellipse. --- Added "star form" of each that defines the curve without placing the - label. --- Renamed grafbase command textboundary to textrect. +Added optional parameter to \plotdata and \datafile; can be used +instead of \(un)smoothdata. -Replaced the four commands \leftaxis, etc., with single -command - \axis[<hlen>]{<one-axis>} -(example \axis{l}) and \borderaxes, etc., with - \doaxes[<hlen>]{<axis-list>} -(example \doaxes{lbrt} for the 4 borders). +Added \mfpframe...\endmfpframe to frame the contents. -Recoded \mfp@now so that only 1 count register is used. + +REVISION 0.4.16 beta, July 28--30 2001: + +Added "star form" of each \tlabel<path> that defines the curve without +placing the label. REVISION 0.4.17 beta, July 28--Aug 10, 2001: -Changed grafbase.mp commands textrect, etc., so the first two -parameters (dimensions of some unspecified text) became one parameter, -which could be either of type pair (the two dimensions), string, or -picture (e.g., a btex...etex expression). In the latter two cases, -Metapost measures it and uses those dimensions to make a rectangle, etc. - -Gave all commands that take a [s] smoothness specification the -option to make it [s<tension>] to draw the curve more tightly. -Commands affected: \function, \parafcn, \plrfcn, \btwnfcn and -\plrregion. This necessitated changes in grafbase code to mkfcn so -that it accepts a tension parameter. Plus changes to all the macros that -call it: parafcn, xfcn, function, rfcn, and plrfcn. Those that -are used by mfpic, like function, were altered as follows. The name was -changed to tfunction, it was given a tension parameter and the call to -mkfcn passes that parameter. A new macro named function simply calls -tfunction with default tension. This was to make the new grafbase -accept old files generated by mfpic. Those macros not used by mfpic -(rfcn and xfcn) simply call mkfcn with tension equal to 1. - -Redid doplot, plotsymbol, and plotnodes so that the plotting symbol -can be a picture as well as a path. If a path, it is scaled by the scale -parameter. A picture is not scaled, since this is essentially not -possible in Metafont and since it is expected that in Metapost it will -be a btex...etex expression and the size is determined by the font. -Because this is expected to be the typical case, the picture is shifted -so that its center at the chosen position (instead of the left -baseline). This is not done in Metafont since finding the center of a -picture is non-trivial. In grafbase.mp the first parameter is also -allowed to be a string, and is then converted to a picture with the -infont operator. In all other cases it reverts to a default dot scaled -by the second parameter. +Commands: \function, \parafcn, \plrfcn, \btwnfcn and +\plrregion now take an option of the form [s<tension>]. Changed the \mfpic command so both optional parameters may be omitted -(scale 1 is then assumed). Also, the first parameter is no longer saved -in \@param. That was not a serious problem, but I did experience a -hard-to-debug problem from using the same temporary name in another -command. (It seems that \@param is not expanded until \@xconv and -\@yconv are used in tlabels, and I included a redefinition of \@param -in a command that calls \tlabel). - -Added EOL, `*', `"' and `$' to the list of symbols whose catcodes -are saved, changed while reading mfpic.tex, and restored at the end. -`$' is put in category 12 and used then in several \if tests for empty -arguments (previously `!' was used, then `@'. (Changed again a couple -of times!) +(scale 1 is then assumed). REVISION 0.4.18 beta, Aug 10--20, 2001: @@ -1382,185 +383,40 @@ REVISION 0.4.18 beta, Aug 10--20, 2001: Added point size option to \grid. Added a macro \plottext similar to \plotsymbol except instead of a -symbol, it takes a bit of TeX text. The macro runs entirely in TeX, -issuing a sequence of \tlabel commands. - -Changed grid and gridlines so the lines and points are fitted to the -pixel grid. We now use safedraw on -hroundpair(zconv(p1))--hroundpair(zconv(point)) instead of on -zconv((p1)--(p2)). When grid and gridlines are used with the same -parameters, this seems to make the picture periodic. +symbol, it takes a bit of TeX text. Added \plrgrid and \plrpatch. Added \piechart and \piewdge. -Removed \d@adv, \i@mul, \i@div, \q@mul as it turns out they are -either no longer used or unnecessary: \i@mul and \i@div, were only -used in \q@mul and it isn't needed as \x= 1.2\x works for fdims. -\d@adv seems to have disappeared from use. - REVISION 0.4.19 beta, Aug 20--26, 2001: Added \mfpicnumber to set the number of the next character or figure. -Removed explicit references to gcode, instead of writing -beginmfpic(incr gcode), \mfpic now writes -beginmfpic(\number\mfp@count). This way TeX's understanding of the -current figure number and Metafont's understanding are guaranteed to be -the same. The opening code of beginmfpic sets gcode in case any existing -files make use of it. This simplifies maintenance, and such things as -\noship and \mfpicnumber. - -Speaking of which, added code to \noship to set a switch so -\endmfpic could skip placing an empty box. I hope this makes an -mfpic environment a typesetting no-op. The only worry is that an -invisible character or box might creep into the output. (It hasn't yet, -that I've noticed, but checking would require testing virtually every -macro we've defined that can be used in an mfpic.) - REVISION 0.4.20 beta, Aug 26--Sep 1, 2001: -Added \barchart (it was easy after \piechart) after seeing comments -on gnuplot list that deprecated pie charts as a means of conveying -quantitative information. The rectangles become available as -\chartbar{<n>}. Where <n> is the number of the bar. - -Changed the code (again!) for shade in grafbase.mf. I was certain -there had to be a faster way. The key turned out to be not to do a -double loop. Instead, draw the bottom row of pixels in one loop, and -then copy that row in a separate loop. The original looped O(nm) times -if n and m are the dimensions of the rectangle. The new one loops, -O(n+m) times. A slight extra bit of efficiency in coding is obtained -by finding the smallest repeating pattern and repeating that (avoids -shifting every other row). This turned out to be two dots at a 45 degree -angle placed \shadespace apart. Then copy _that_ picture. - -I was worried that this algorithm had to copy a much larger picture the -second loop, but it seemed to make little difference. The bottleneck -seems to be the loop overhead. There was a seven-fold speed increase in -shading a 100pt by 100pt rectangle with a \shadespace of 1.2pt -(this is about the most dots MiKTeX's Metafont could handle). I came up -with another algorithm that is O(m/n + \log n), when n < m. But it -was only marginally better at the sizes Metafont could handle. Plus it -traded memory for speed. It built a shading rectangle of size at least -n/8 in O(\log n) iterations and then tiled with O(m/n) of them. -This could require up to an additional 12.5% more memory, as the last -row or column could overshoot by up to n/8. - -Changed timing so that \mfp@count is initialized to 1, and -incremented only in \endmfpic (where it is in the code skipped if -\noship is used). - -Changed \newdef to \def for \arrow so eplain won't generate a -complaint. +Added \barchart. REVISION 0.4.21 beta, Sept 1--10, 2001: -Got tired of typing "\macro" so I changed it to \mac. Also got -tired of "\vskip\myskip", etc., so I wrote \bcd and \ecd to -bracket the headers of command descriptions. For examples, I wrote -\bex and \eex. Changed the font for \prog to small caps and for -\opt to sans serif. Added \null to the end of the definition of \TeX -for \spacefactor reasons (saw this somewhere). - -Wrote a \myverbatim macro for mfpicdoc.tex since header.tex's -verbatim wouldn't work for me. Completely rewrote \head and \subhead -for better spacing and page breaks. (One of these days I will give them -numbers and perhaps translate everything to either LaTeX or eplain to -provide cross references.) - -Added SolidStar to symbols allowed by \plot, etc. Changed grafbase -code so that Star produces an open five-pointed star instead of the -asterisk previously drawn. Added Asterisk in case anyone prefers the -old way. - -Separated the part of \mfp@rwdata that writes the rendering code from -the part that writes the data. This is for later enhancements. The -wrapper that writes the rendering code is called \do@datafile. Took -out of \mfp@rwdata the code that wraps the point in (redundant) -parentheses. Now the parentheses _must_ be added by \using. - -Changed the name of \mfpic-package to MFPicpackagE, (part of -the paranoia that catcodes of punctuation might be changed). - -Added code to several commands to test for empty optional arguments. The -reason: when an optional argument has two parts, as in \plotdata[s1.2] -the code splits it up as [#1#2] so that s is assigned to -#1 and 1.2 is assigned to #2. If 1.2 is omitted, then #2 is -empty, but if both parts are accidentally omitted, then the closing -bracket is assigned to #1 and TeX searches for another right -bracket. This can cause extremely unhelpful error messages from internal -commands generated much later. Now, a command like \plotdata[] is -treated as if there were no optional argument: default values are used. -The user can deduce from incorrect output where an error occurred. - -Did the above for \tlabel, but only for the second part of the -optional parameter (laziness). - -Added commands similar to \rotatepath: \shiftpath{p}, \scalepath{p,sc}, -\xscalepath{x,sc}, \yscalepath{y,sc} and \slantpath{y,sl}. "p" is a -point "sc" is a scale factor, "x" is an x-coordinate, "y" is a -y-coordinate and "sl" is a slant factor. These commands accept a -following path and pass back the corresponding transformed path (to -preceding prefix macros). - -Released to alpha testers. +Added SolidStar to symbols available. Changed Star to produces an +open five-pointed star instead of the asterisk previously drawn. Added +Asterisk to duplicate the old Star. + +Added \shiftpath{p}, \scalepath{p,sf}, \xscalepath{x,sf}, +\yscalepath{y,sf} and \slantpath{y,sl}. "p" is a pair "sf" is a +scale factor, "x" is an x-coordinate, "y" is a y-coordinate and "sl" +is a slant factor. REVISION 0.4.22 beta, Sept 11--22, 2001: -Added \reflectpath{p1,p2}, \xyswappath and \yslantpath{x,sl}. Added -also \xslantpath as a synonym for \slantpath. - -Removed grouping in \mftitle that inadvertently caused \tmtitle's -argument to be omitted from the .log file. Rewrote both to call a -third macro. The third macro loads the argument in a token list and -writes to the .mf file. \mftitle supplies the grouping to preserve -the token variable. \tmtitle also adds the grouping, plus writes to -the .log and to the document. - -Redid \tlabel so that it checks for completely empty optional -parameter. - -Also avoid duplicating every \@...tlabel command. Only ever did that -to avoid the message about rotation being ignored in the \nomplabels -case. Somewhere along the way handling of default optional parameters -made that moot. - -Now \tlabel begins a group, then sets \tlabel@rot to empty (not -zero!) if mplabels is not in effect, then passes -"[\tlabel@vpos\tlabel@hpos\tlabel@rot]" as the optional parameter. The -two different commands \@tlabel and \@@tlabel ultimately end the -group. This necessitated changing a number of commands that call for -tlabels: I thought it more efficient to say - - \if@mfp@mplabels\expandafter\@tlabels\else\@@tlabels\fi... - -than to call \tlabel directly. But now that would unbalance the -grouping. - -Somehow I overwrote the version of mfpic.tex in which I made the above -three paragraphs of changes with the previous version. So I did it all -again, but now it does the following. \tlabel starts a group and calls -two different commands: if no "[]" follows, it defines \tlabel@rot -to be empty under \nomplabels; and if "[]" follows, it calls -\tlabeljustify. Finally it calls either \@@tlabel or \@tlabel, -depending on mplabels, feeding the arguments \tlabel@vpos, -\tlabel@hpos and \tlabel@rot. This ensures that insufficient optional -parameters produce default results, as \tlabeljustify does default -things with empty parameters. - -In grafbase: push vtr in bcoords command and pop it in ecoords. -Added vtr:=ztr shifted -zconv((0,0)); to apply_t. It seems coords -and apply_t were broken ever since I defined vconv in terms of vtr -instead of zconv. - -Added \@firstoftwo and \@secondoftwo and rewrote several commands to -use them, including \@if@mfp@beforefileopen.. +Added \reflectpath{p1,p2}, \xyswappath and \yslantpath{x,sl}; also +\xslantpath (a synonym for \slantpath). + REVISION 0.5.0 beta, Sept 24--Oct25, 2001: @@ -1568,408 +424,67 @@ Change comment written at the top of the output file. Now includes the name of the output file, as well as the \jobname of the TeX source that produced it. -Changed how \grid handles optional point size. Now it writes a command -vgrid that takes the extra parameter (and the old grid just calls -vgrid with default parameter). - Made \mfpic and \endmfpic write the source line number to the output for debugging use. -Added token list \every@tlabel and a command \everytlabel for -setting it (and writing the settings to the .mp file when mplabels -is in effect.) In order to make this local to mfpic -environments, now \mfpic writes "verbatimtex \begingroup etex" to -output and \endmfpic ends the group (under mplabels). - -Renamed \if@graphfileexists to \ifmfpicFirstTime which -required reversing the sense of all \if... tests. This will allow the -user to override the behavior of mfpic in unusual circumstances. - -Restored the command that expands to a backslash with category 12, for -writing the outer token \newtoks to the output file. +Added \everytlabel for setting commands issued at the outermost level +at the start of each label. -Because \mfsrc ends with \ignorespaces (should it?) commands -can generate a space under metafont but not under metapost with -mplabels (because they write TeX code to the output). I have therefore -started to look out for such differences and am adding \ignorespaces -when I notice them. +\mfpic now writes "verbatimtex \begingroup etex" to +output and \endmfpic ends the group (under mplabels). -Released to CTAN, Oct ??, 2001. +Released to CTAN, Oct, 2001. REVISION 0.5.01 beta -This modification actually occurred in February 2002, but I made it on -version 0.5.0, correcting a small bug by adding some braces around the -point arguments of \tlabel in a couple of places. The problem was that -Metapost code in the point argument could contain parentheses or commas, -and these had to be hidden inside braces. The code of \tlabels and -other commands would read this argument twice so two levels of braces -were needed, but that would cause errors in other contexts. The internal -braces in the right places meant the user need only use one. All of this -was only a problem with mplabels. - - -REVISION 0.5.02 alpha, Oct 26--Nov 8, 2001: - -Put most of the catcode changes (in the "paranoia" section of -mfpic.tex) in a command \mfp@sanitize for possible reuse. - -In preparation for a planned enhancement, I have divided \@figmac into -three parts: the set-up, write, and post-write phases. The idea is that, -e.g., \@curve[1.2] will do the setup, and write the code -tcurve(1.2, false) but not the points or the ending semicolon, then -close with the all-purpose macro \@figmacdata. This macro will scoop up -the last parameter (listing the points), write them to output, adding -the semicolon, and then issue the post-write code. Why? Ultimately I -would like to be able to present the data in more than one form. -\@figmacdata would detect the form and do the appropriate thing. In -particular I would like to be able to do something like -\curve[1.2]\datafile{file.dat} to draw a curve connecting the points -listed in file.dat. - -Have actually changed the definition of \curve and \cyclic to use -this scheme, although \@figmacdata just writes the inline data points -to output. Shouldn't be unusually hard to make it open the file handle -and call \mfp@rwdata. I will first try to organize the opening, -reading, writing and closing of files into reusable modules. - - -REVISION 0.5.03 alpha, Nov 8, 2001--???: - -Further modified \@figmacdata: Split it in two. First, \mfp@writelist -writes the list, enclosed in parentheses and followed by a semicolon, -then issue \@figmacend. This is because lists are also used by -"non-figmacs", like \xmarks and \point. For these I just use -\mfp@writelist. Perhaps it wouldn't hurt to include \@figmacend on -those, but I wasn't prepared to chance it. Also put the common -combination \@figmacstart\mfsrc{#1}\@figmacdata in a new macro -\@listmac. - -Now all those macros that take a list as last argument (thank goodness -it always _is_ the last argument) follow the scheme. This includes -\xmarks, \ymarks, \lmarks, \bmarks, \rmarks, \tmarks, \point, -\plotsymbol, \piechart, \barchart, \polyline, \polygon, \fcncurve, -\curve, \cyclic, \qspline, \closedqspline, \cspline, -\closedcspline, and \turtle. Ultimately, I may make \@figmacdata -write data from a file (if the next token is \datafile) or data listed -inline as if in a file (if the next token is \inline). - -I rewrote the code in \@mfpic that loads the figure into \@wholegraph -so that when \ifmfpicdraft is true then it is skipped completely and -\@wholegraph is just set to an empty box. Then, at the end of \@mfpic, -if \ifmfpicdraft is true, the figure number in \tt is set as a -\tlabel (so the size of the figure will automatically adjust to -accommodate it). - -Oops! Had to change the above behavior: \tlabel doesn't expand its -contents when writing to the .mp file in mplabels. So it is -impossible to get \mfp@count (the picture number) written as a number. -Rather than have to write the definition of \mfp@count to the output -file, I changed the code that loads the figure into \@wholegraph to put -the figure number into the box as straight text. Now, the figure number -may again overwrite the boundaries of the box, but that's OK, I guess, -since it's just a temporary situation. +Corrects a small bug by adding some braces around the point arguments of +\tlabel in a couple of places. REVISION 0.5.04 alpha, ???--April 11, 2002: -Added \@XP which expands to three \expandafters. - -Changed what the truebbox option writes to the .mf file. The scope -in Metafont should now more closely match the scope in TeX. - -Added options draft, final, and nowrite (as well as command -versions \mfpicdraft, \mfpicfinal, and \mfpicnowrite) which should -avoid including the pictures (draft) or include the pictures (final), -overriding automatic decisions. Option nowrite avoids writing anything -to the .mf file. - -Made several assignments, such as \mfp@count, \@graphfont, etc., -global, in case the command \opengraphsfile is issued inside a group. +Added options draft, final, and nowrite (commands \mfpicdraft, +\mfpicfinal, and \mfpicnowrite) which should avoid including the +pictures (draft) or include the pictures (final), overriding automatic +decisions. Option nowrite avoids writing anything to the .mf file. Rewrote \tlabel and friends so that the point arguments could -optionally be enclosed in braces. This was done by checking for a left -parenthesis with \mfp@ifnextchar and branching on that. This allowed -me to change the gblabel command to accept a list of points, and now -\tlabel can, under mplabels accept a list of points in braces. - -Completely reorganized the data file reading macros (much smaller and -free of \loop...\repeat constructs). Also added the previously -mentioned capability to replace any list after a macro such as -\curve{...} with the construct such as \curve\datafile{<file>} to -construct the list from the data in file - -Changed explicit value of 5 data points per line to the value of -\mfpdataperline when plotting data files. - -Added error messages \nodatafileerror and \emptydatafileerror. +be enclosed in braces. -Added command resizedrawpen to grafbase to unclutter the -output file. +All those macros that take a list as last argument can now substitute +"\datafile{name}" in place of the list. Collected the common code in \xmarks, \ymarks, etc., so that now they -are implemented with \marks x, etc. +are implemented with \marks x, etc. (Later renamed to \axismarks.) Added aliases \lattice and \gridpoints for \grid. -Changed the option handling in \tlabel so that it is translated into -integer values and \ifcase can be used, making for simpler conditional -code. Added \mfp@justifyerror to the \tlabeljustify command, to -occur if an invalid letter is used. - -Added \extra@tlabel command at the end of \@tlabel and \@@tlabel. -Redefining this makes it easier to write macros looping through many -\tlabel commands. - REVISION 0.5.05 alpha, April 16, 2002: Corrected bug in \mfpverbtex which caused # symbols to be doubled in -the output: simply change catcode of # before reading the verbatimtex -material into the token list. - -Remove \DeclareGraphicsRule commands issued in mfpic.tex so -as not to interfere with the graphics package error checking. Instead -the equivalent is done inside a group for each picture with -\@namedef{Gin@rule@.\mfp@count}. - -Added a command index to \mfpicdoc.tex. The distribution now includes -a recent version of eplain.tex for the indexing macros and the actual -index mfpicdoc.ind. The makeindex style file that was used, -mfpic.ist, is also included. +the output. REVISION 0.5.06 alpha, April 16--May 7, 2002: -After installing new MiKTeX and forgetting to set localfont, I found -that textrect, textoval and textellipse (in grafbase.mf) fail due -to arithmetic overflow. This is because rather simple text can be (say) -40pt by 40pt. Since that is 400 by 400 pixels (under mode:=ljfour), -and we have to compute numbers on the order of their product, we exceed -the 32K limit on numbers. Changed these commands to do computations in -graph coordinates. That is at least resolution independent. Also change -some formulas involving sqrt to instead use ++ or abs to minimize -such problems. - -Updated most docs. Changed mfpic.ist so it will write an mfpic package -comment to the top of mfpicdoc.ind. +Made changes to avoid MF/MP overflow in \tlabelellipse/oval. -REVISION 0.5.07 alpha, May 7--June 25, 2002: +REVISION 0.5g (= 0.5.07) alpha, May 7--June 25, 2002: Added \usingpairdefault to reset the \using specification to the -default. Also \usingnumericdefault for commands that take a numeric -list (equivalent to \using{#1 #2}{#1} ). - -Documented \marks<axis> commands. - - -REVISION 0.5g alpha, June 26--July 31, 2002: +default. Also \usingnumericdefault for commands that take numeric +data. Changed version numbering scheme so LaTeX file utilities like the snapshot package are better served. -Change the graphic inclusion to use \@setmfpicgraphic which, in -addition to executing \setmfpicgraphic, also runs any additional -commands that may be needed and should be transparent to the user. These -include the above setting of the graphics inclusion rule, and now also a -scheme for recovering the bounding box (for future feature allowing -truebbox without mplabels). The graphics package makes this hard by -not saving it globally except in \@gtempa, which hardly seems safe to -rely on. Nevertheless that is what I use now, though it doesn't get used -yet. - -Changed \DeclareOption* to print a warning or a message (depending on -whether graphics was already loaded or not) instead of just passing -the option on to graphics package). - -The default verbatimtex stuff that was written to the out file in -\opengraphsfile is now stored in a token register -\mfp@commonverbatimtex and then written. - -\opengraphsfile now checks for the existence of a file with the -extension of the current value of \mfp@count (default 1) in case the -user changes its value (with \mfpicnumber) before that command. -mfpic.tex now sets it to 1 rather than rely on \opengraphsfile to do -so. - -Changed \tlabel to place its contents in a simple left aligned -\halign. This makes it possible to right-align or center multi-line -labels with an \hfill or \hfil on left. - -Corrected bugs in file read/write (\plotdata, etc.): Moved whitespace -resetting to \@processdatafile, and changed one \def in -\mfp@rwdataloop to \edef. - -Moved the LaTeX2e graphics rule stuff to \mfpic, \usemetapost now just -saves the graphics rule signature ("eps" or "mps") for use in that -stuff. - -Remove eplain.tex, substituting indexing.tex which contains only(?) -macros necessary to process the one indexing command actually used in -mfpicdoc.tex, and the two-column printing of the index. - REVISION 0.5h alpha, Aug 1--6, 2002: -Added code to \@setmfpicgraphic to retain the lower left corner of the -picture under metapost. I did this by redefining \Gin@def@bp to make -its definitions (of \Gin@llx, etc.) global. Then added that info to -\@xconv and \@yconv. This allows truebbox to work without mplabels. -Added code to graphbase.mp that keeps track of maximum bounding box of -all the text labels and to adjust the figure's bounding box if that -extends past the boundary of the mfpic environment. This allows labels -to expand the size of the graph (as documented) in the remaining case: -with mplabels but without truebbox. - -This requires that any user who redefines \setmfpicgraphic must also -redefine a command \getmfpicoffset that stores the coordinates of the -lower left corner in the macros \mfpicllx and \mfpiclly. - -Reverted to the previous \tlabel method of producing multiline -labels. The \halign method (specifically the \let\\=\cr) produces -an error when either of the packages latexsym or amsfonts is used. So it -is not (yet) possible to right align or center multiline labels. - -Reverted back when I discovered that \def\\{\cr} did _not_ conflict -and seems to work just as well. It is again possible to right align and -center multiline labels. - -Added \gclip rendering macro (did no one ever miss this?), that clips -the current picture to the interior of the following path. And added an -example to *objs.tex. - - - -REVISION 0.5i alpha, Aug 7--12, 2002: - -Rearranged the endmfpic code of grafbase.mp so that truebbox, clip -and mplabels interact properly, meaning that text which is clipped off -_doesn't_ expand the bounding box. - -Announced to mfpic mailing list. Maybe this will become version 0.6 beta. -(Ha!) - - -REVISION 0.5j alpha, Aug 12--15, 2002: - -Changed name of \marks command (introduced in 0.5.04) to \axismarks -to avoid name clash with \eTeX primitive command (reported by Guy -Worthington). - - -REVISION 0.5k alpha, Aug 15--26, 2002: - -Rearrangement of \begingroup-s at some point caused a problem with -\datafile commands: the \@figmacend was issued inside a group. -(reported by Jaromir Kuben). - -I moved the location of \@figmacstart and \@figmacend and that -solved it but caused a problem with \plotdata, which reused that code. -Solved by putting an appropriate \@figmacend in the \plotdata code. - - -REVISION 0.5l alpha, Aug 26--29, 2002: - -Changed the code that saves the lower left corner of the picture under -metapost. Instead of making \Gin@llx, etc., global, I redefine -\Gread@parse@bb to store them globally in our own macros. This -redefinition happens only in the \mfpic environment (in fact only -inside the box where the graphic is included). - -I settled on this as having almost no side effects. Perhaps there is a -reason the \Gin@* commands are local even though no one on -comp.text.tex came up with one. - -Also, since now the only \begingroup/\endgroup pair in the -file read/write code is in one place: the \@processdatafile command, I -deleted all the \global in front of \read commands. - - -REVISION 0.5m alpha, Aug 29--30, 2002: - -Updates to *.txt, readme.1st, and documentation. - -Changed \mfp@ifnextchar so that when looking for the next token, it -will skip over \relax. This means one can put the optional argument on -another line even when \preservelines is in effect (at which time the -line end character is active and has been \let equal to \relax) - -Change \@figmaclist and \@mfp@writelist so they preserve lines. -Since all commands that write lists of data to the output file -ultimately run one of these, all those commands preserve lines. Then I -removed \preservelines from \mfpic. Now we no longer need the -caution about putting a macro and its arguments on the same line. - - -REVISION 0.5n alpha, Aug 30--Sep 04, 2002: - -Allow \tlabelsep and \tlabeloffset to have any <dimen> argument. I -was so stupid: it was just a matter of setting the TeX dimensions first -and then writing their values to the output. - -Documented \mfpdataperline. Also changed it to a macro rather than a -\count because LaTeX users are unfamiliar with count registers -(\newcounter, yes, \newcount, no). I could have called it -\c@mfpdataperline, but then it wouldn't be user-level for plain TeX. - -Changed "\ifnum\mfp@n=\mfpdataperline" to -"\ifnum\mfp@n<\mfpdataperline" and exchanged the true and false clauses. -Just in case some user sets \mfpdataperline to some number which is not a -positive integer. - -Added \space to "\mfsrc{verbatimtex\endgroup\space etex}", just in -case TeX could enter a state where it doesn't append a space when it -writes the \endgroup. - - -REVISION 0.5o alpha, Sep 04--06, 2002: - -Corrected LTXMFobj.tex and LTXMPobj.tex. After testing various -combinations of mplabels and truebbox, I'd incorrectly added these -options to the former file and failed to restore them to the latter. - - -REVISION 0.5p alpha, Sep 06--09, 2002: - -Added commands \setpapersize and \setpagegeometry to header.tex. -Now the preamble of almost every .tex file in the docs directory is -reduced to using these two commands. - -Deleted old verbatim macros which were no longer used. - -Removed save piecenter; from grafbase. This variable was documented to -be set by the piechart command, but saving it made it unavailable. - -Corrected the example concerning \datafile with \xmarks: the -parameters of \using needed a space between them. - - -REVISION 0.5q alpha, Sep 09--12, 2002: - -Multiple documentation refinements. - -Removed \if@mfp@metafont, using only the switch \if@mfp@metapost. - -Added \mfp@ifdefined: it checks if a token is neither \undefined nor -\relax. Used in macros to detect format. Moved definition of -\@firstoftwo and \@secondoftwo before it. - -Made some definitions in \usemetapost global, in case it is -mistakenly issued inside a group. - -Removed \@eatspacedef since it was used only once to define something, -and it was shorter to define it directly. - -Changed all \ifx in \@@arrowoption to \if in case someone wants to -pass the the letter as a macro - -In axis code, changed `\x to simply `x lest \x have some -definition and some TeX state causes it to be expanded. - -Gave \newsavepic a definition closer to \newsavebox, which uses -\@ifundefined rather than strictly testing against \undefined. +Added \gclip rendering macro that clips the current picture to a path. REVISION 0.6 beta, Sep 12, 2002: @@ -1979,15 +494,15 @@ Uploaded to CTAN. REVISION 0.6a alpha, Sep 12--Nov 5, 2002. -Added \let\par\relax in the definition of \@mfpic to -nullify blank lines in user code. Needed since I stopped using -\preservelines. (Reported by Jaromir Kuben.) Put in commands to -restore \par to its normal meaning in labels and captions. +Added \let\par\relax (later \@empty) in \mfpic to nullify blank lines +in user code. (Reported by Jaromir Kuben.) Put in commands to restore +\par to its normal meaning in labels and captions. REVISION 0.6b beta, Nov 6--, 2002. -Incorrect sign on sinh function in grafbase. +Correct sign on sinh function with negative argument + REVISION 0.6c beta, Nov 6--, 2002. @@ -1995,788 +510,139 @@ Bounding box had the horizontal and vertical data reversed if all of the following three options were selected: metapost, mplabels and clip. -REVISION 0.63 alpha - -Mfpic: +REVISION 0.63(=0.6c) alpha -Added code to write into the graphs file a test of the major version -number (to assure that the files mfpic.tex and graphbase.mf/p are -comparable). +New numbering scheme: increment hundreds (perhaps also thousands) digit +for alpha, add letters only for patches to released beta version. -Added a switch \in@mfpicenv that is true inside an mfpic environment and -false outside. This allows macros to make global changes outside and -local changes inside, helping TeX and Metafont stay in sync. Modified -some commands to use it (clip and truebbox options, so far). Added -\mfp@local which expands to nothing inside and mfpic environment and -to \global outside. +Added check that versions match to mfpic and grafbase. -Changed \@dummy to \mfp@dummy (mfpic.tex) lest its name clash with -other packages. - -Added a \partialpath{a,b} command. It's argument is two fractions -separated by a comma and produces the subpath of the following path f -that goes from a*length(f) to b*length(f). (Hmmm...so -\partialpath{1,0} would inefficiently reverse a path!) +Added a \partialpath{a,b} (later \partpath) command to produce the +subpath of the following path f that goes from a*length(f) to +b*length(f). Also added \subpath{a,b} to give the equivalent of the MF code subpath (a, b) of <following path> -Added command \closed[<tension>]{<method>} where <method> is l, b, -s, cb, or u so that, for example, \closed[2]{s} does the same as -\sclosed, except that added or modified links will have tension equal -to 2. Then I defined the previous commands in terms of this one (tension is -ignored for \lclosed and \cbclosed since they specify exactly what the -link should be.) Default for <tension> is 1. - -Moved \fdef to a global location and added "save #1;" to its -definition. Functions defined with it should now be local if it is used -in an mfpic environment and global otherwise. +Added tension option to closure commands where it makes sense. -Redefine \+ for entire mfpic.tex. Avoids somewhat complicated -work-around of its outerness in \usemetapost. Restore previous meaning -at end of file. - -Added \@bsphack and \@esphack (as in LaTeX). +Moved \fdef to a global location. Rewrote \tlabelrect, etc., so that they take a second optional -parameter: the label justification. Made the current \tlabel defaults -the default for \tlabel<path> also. Might change this to [cc] after -talking to Jaromir. - -Changed \store to be usable as a prefix command. It still takes a -second argument but doesn't wrap anything around it, so -\store{m}\circle{...} is as valid as \store{m}{\circle{...}}. But now - \xscalepath{0,2}\store{m}\circle{...} -is also valid, storing the untransformed circle. It is written as a -\@rendmac so that it turns off automatic path rendering. It invokes a -new grafbase command stored , which stores the path and passes it on -(as the other prefix macros do). This may have restored the old behavior -(prior to 0.2.9.10 alpha), but I can't tell, since I never had any -experience using those versions and don't know why the change was made. - -Streamlined \arrow so that instead of a chain of 4 macros (that all -did the same thing!), each calling the next, it loops until no more -optional arguments are found. - -Renamed \mfpicdebugwrite to \mfpDBwrite to streamline the source -file. Later renamed to \mfp@DBlog to remind me that it only writes to -the .log . - -Change \getmfpicoffset and \preparemfpicgraphic so they take an -argument: the name of the figure file. The default versions do nothing -with it. Changed \@setmfpicgraphic so it calls them with the name of -file. In case a power user needed the file name in his redefinition. - -Shortened \usemetapost. Defined as much as possible outside it, and -include only what needs to be changed. E.g., we no longer redefine -\@setmfpicgraphic inside it (nor \preparemfpicgraphic in the -non-LaTeX version). - -Rearranged code so that \usemetapost is defined in three ways instead -of two: LaTeX2e, plain pdfTeX and plain TeX. Formerly the second two -were combined in one which contained an \ifpdf-\else-\fi construct. That -is now moved to an outer level. Shortened the name of \if@mfp@pdftex to -\if@mfp@pdf since pdftex could be used to produce dvi output, and we -want this to be true only when pdf is being produced. - -Added \mfcmd (adds semicolon to argument) and \mflist (wraps argument -in parentheses). Done so that we can delay reading the argument and -therefore preserve lines. Both of these and \mfsrc now call \@mfwrite -with an appropriate argument. It initiates \preservelines and -continues with \@mfcmd, \@mflist, or \@mfsrc. These read the -argument and end with \@mfsrc, which ends line preserving. - -Rearranged code of \@figmac. It now issues \@startfigtrue before -writing its argument and doesn't do \@imrendtrue. This allows it to -end with the code to read the argument, and avoids some cases of having -to read large arguments before \preservelines is issued. There was -only one case where the timing mattered: \connect, and there we needed -the current order! - -Simplified the scheme for list macros (\mfp@writedata). The above -rearrangement meant there was no longer any need for different treatment -of figmacs and non-figmacs. - -Grafbase: - -Added code to grafbase file to test if the major version of mfpic -(assuming it is input by an mfpic generated file) and that of -grafbase.mf/p are comparable. Added a boolean MFPIC that is true if -the test succeeds. Not used yet. - -Rewrote most of the arc commands in grafbase, focusing on trying to make -any points that were explicitly specified into actual nodes of the path -(i.e., use nothing that could result in round-off error) plus trying to -increase robustness. - -"Corrected" cbclosed command in grafbase. Its code used to put in one -cubic B-spline link and connect that to the beginning and end of the -path f with two ordinary MF Bezier path joins. Now it connects with -three cubic B-spline links, the middle one being the same as before. - -removed w, d, and h as internal variables because of another user -name clash, this time with \fdef(h)... . - -Rewrote grafbase messages and error messages for consistency and -pithiness. - -Changed gblabel to newlabel, but gblabel remains as an interface for old -files, calling newlabel. There are now three parameters rather than four -for horizontal and vertical adjustment. The first gives the fraction -of the text left of the point of placement. The third is a -boolean. If false, the second parameter is taken as the absolute -fraction of the text below this point. If true, it represents the same -except the depth of the text is ignored. This (.5,0,true) gives [Bc] -placement, while (.5,0,false) gives [bc]. - -Added textrectx, textellipsex and textovalx which now allow horizontal -and vertical adjustment and rotation, just like gblabel. The original -commands just call it with the old default (centered, not rotated). - -Rewrote nearly all error messages in grafbase.mf/p. Changed "GUBED" to -"END DEBUG". (That has always bothered me.) - -Reintroduced "bounds" to the mfpic file. It seemed a reasonable -shorthand, replacing four lines of code with one. And has been around -forever. - -Reexamined clipping, trying to make sure that when ClipOn is true, -nothing is written outside the clipping paths. Except there are things -drawn for debugging purposes, so I added noclip() which executes its -contents in a group where ClipOn is set to false. Added DoClip(v) as a -shorthand for: - if ClipOn and (ClipPath > 0) : clipsto (v, ClipPath); fi -Correspondingly changed several commands to write to a temporary picture -variable, which is then DoClip-ed before adding to active_plane. This -turned out to be a prescient act for the purpose of using color in MF -(see below). - -Changed P1 in headpath (giving the direction of the arrowhead) -from "direction n of g" to "point n of g - precontrol n of g". -This gives the arrowhead from \arrow\rect{...} a reasonable direction -without having to rotate it +/- 45 degrees. - -Determined that the filling commands shade , polkadot and tess (all -these are my doing) did not respect aspect_ratio. Changed all of -them to invoke a macro, filledwith, that returns a rectangular picture -tiled with shifted copies of a given picture. This macro respects -aspect_ratio (i.e, invokes .t_ where it should -- I hope). - -Introduced color to Metafont (gray levels only): made color synonymous -with numeric; assigned numeric gray levels to the variables red, -green, etc. Defined the color commands (rgb, RGB, cmyk, gray and -named) to produce appropriate gray levels. Added macro makegray for -this purpose. Allow black or white in drawing commands and gray -levels in filling commands. Gray fill is implemented by a new macro -shaded which is similar in some ways to the internal code of shade and -may one day replace it. Right now shade uses round dots and respects -shadewd and the spacing parameter. But shaded just builds a square -picture which is either two black almost-squares in a white background -(gray levels > .5) or two white almost-squares in a black background. -Works well in simple tests so far. - -Changed the code executed if mode is unknown back to switching on a -default mode, but this time ljfour instead of cx. - -Removed the aspect_ratio scaling from resizedrawpen, and also from -the definition of drawpen and hatchpen. Added that scaling to -shpath. - -Added partialpath and gsubpath to support mfpic's \partialpath -and \subpath . - -Docs: - -Changed this file (changes.tex) from a .tex file to a .txt file for -simplicity of maintenance. - -Transcribed mfpicdoc.tex to a LaTeX file adding mfpdoc.sty to preserve -most of the previous formatting. Adds a table of contents; allows an index -without the extra files indexing.tex and mfpic.ist (both now removed). -Added hyperref, producing a linked .pdf file if pdflatex is used. Did -the same with grafdoc.tex and mf-revu.tex, except the latter has no -index. Have removed mppicdoc.tex since the small part of it that was -not already covered in mfpicdoc.tex has been added in an additional -appendix. - -Made mfpic.dtx, mfpic.ins and grafbase.dtx files. Processing -mfpic.ins produces mfpic.tex and mfpic.sty from mfpic.dtx, plus -grafbase.mf, grafbase.mp and dvipsnam.mp from grafbase.dtx. - -REVISION 0.64 alpha - -Grafbase: - -Rewrote the mfpic macro \polkadotwd so all it does is set the width -(omitting the code "thepolkadot := setdot(...)"). The grafbase polkadot -command now remakes the dot each time it is run. This is really just for -simplicity (for the \cs{polkadotwd} macro). Same was done for \shadewd -and shade. To change the shape of the dots used, I've added -shadedotpath and polkadotpath in addition to dotpath. The last is -now only used for dotted lines and grid. - -Added command threeangles (suffix s) (expr A, B, C) that finds the -three angles of the triangle ABC and assigns them to the s1, s2, and -s3. Now used in arcppp and the new command circleppp . Later -threeangles was replaced by three calls to a new vardef: cornerangle -(A,B,C) , which was useful on its own. - -Added circleppp producing the circle through three points. - -Added circlecp producing the circle with center at a given point, and -passing through a given point. - -Added circlepps producing the circle completing the arc produced by -the corresponding arcpps. These three form their circle from arcs, -ensuring that the circle (a) begins at the first given point on the -circumference, (2) has all the given points as nodes (though more may -have to be added, of course), and (iii) it is at least as robust as the -arc commands, into which a lot of thought was put. - -Added commands that produce circles related to triangle. A triangle Q -is, by definition, required to be a closed path in the form -Q0--Q1--Q2--cycle. - -circumcircle Q produces the circle through all three corners -incircle Q produces the inscribed circle (inside the triangle - and tangent to all three sides) -excircle n of Q produces the exscribed circle opposite Q[n] (tangent - to Q[n-1]--Q[n+1], and to the extensions of - Q[n]--Q[n-1] and Q[n]--Q[n+1] outside the triangle) -ninepointcircle Q The circle through the base of all three altitudes, - through all three midpoints of the sides and through - the points on each median that is halfway - between the corner and the common intersection of - the medians. - -And commands that produce points related to a triangle: -incenter Q center of incircle Q (= intersection of angle - bisectors) -circumcenter Q center of circumcircle Q -excenter n of Q center of excircle n of Q -ninepointcenter Q center of ninepointcircle Q - -None of the triangle related command integrated into mfpic yet. - -Added command pathcenter c which obtains the center of a circle c -(or a rectangle c!) by finding the intersection of the perpendicular -bisectors of two chords. It will happily find the "center" of any path. - -Mfpic: - -Rewrote \function, \plrfcn and \parafcn so they all simply define -\mfp@fcnname to the appropriate grafbase command name and call the -same macro to write the code. As with a lot of other commands, we now -write the old shorter commands when the new parameter (in this case the -tension) is absent: \function {...} produces "function (true) (...)" -while \function[s1.5]{...} produces "tfunction (true) (1.5) (...)". -In retrospect it would have made cleaner code if I had placed the extra -"t" at the end of the name and the tension parameter at the beginning of -the parameters. - -Made similar changes to \btwnfcn and \plrregion . - -All the commands that have an optional argument for the color (\draw, -\gfill, \arrow and all the hatching commands) now have an empty value -for color as the default. When the color is empty we write the old -simpler commands. That is, "\draw..." or "\draw[]..." produces -"drawn ..." rather than "colordrawn (drawcolor) ..." Trying to -streamline the output file. - -Added optional argument to \circle (similar to the ones for \arc). So -the circle through three points can be easily drawn, filled, etc. - -Renamed \@graphdp to \@graphbot, since it is not the TeX depth, but -the coordinate of the bottom recalculated after each \tlabel . Also -\@graphht -> \@graphtop for the consistency. - -Streamlined some aspects of tlabel macros, reducing number of -macros in the chain. Also keep track of the \@graphleft, etc., -calculations so that we can later set the label on the graph with only -two kerns and no \if-clauses. \tb@moveright is the accumulated value to -kern horizontally, and \tb@raise is the amount to move vertically. +parameter: the label justification. -Streamlined \tlabel<path> macros, including consolidating main code into -one, rather than two alternative macros. +Redid all(?) optional argument handling so that an empty optional +argument is the same as no optional argument. -Added \@firstofone and use it in place of \mfp@identity . Also use it -when passing a pair of coordinates for \tlabel : provides grouping that -is not stripped by parameter matching, but also not written into output -file. +Changed \store to be usable as a prefix command. -Assigned numbers to axes: x=0, y=1, l=2, b=3, r=4, t=5 . Defined -\get@axisnum similar to \tlabeljustify to assign the numbers, and can -now use \ifnum in \axis and \ifcase in \axislabels to branch on. -This also consolidates the error message in one place. +Removed bug reintroduced into filling commands (shade , polkadot and +tess) so they did not respect aspect_ratio (affected only MF). -Rewrote the \endmfpic debug messages to give me information I want to -see: compare \@graphleft and \@graphright with \wd\@wholegraph, etc. +Introduced color to Metafont: color functions (rgb, cmyk, etc.) return a +numeric. Drawing commands subtract white paths (and simply draw others). +A process something like \shade is used to produce gray polkadots and +fills. -Rewrote \plottext under the assumption that all points are specified -as in other plotting commands: pairs separated by commas (i.e., no -braces). Changed docs to reflect it. +Transcribed documentation to latex. -Redid \axislabels so that it could proceed gracefully on an empty -argument. In fact... +Packaged mfpic in mfpic.dtx, mfpic.ins and grafbase.dtx. -Added \mfp@ifempty as an abbreviation for - \if~#1~\@xp\@firstoftwo \else \@xp\@secondoftwo\fi -to make several such changes possible. Redid \do@mtparam using it. +REVISION 0.64 alpha -Docs: - -Documented some aspects of MF naming conventions (basically: no -suffixes) and suggested only letters be used. +Added optional argument to \circle (similar to the ones for \arc). So +the circle through three points can be easily drawn, filled, etc. REVISION 0.65 alpha -Mfpic: - -Rename \mfp@metaposttrue to \mfp@mposttrue, etc. - -Since \@mfp@mposttrue is never otherwise used, we don't define it -(i.e., remove \newif command), instead, replace its use in -\mfp@mposttrue with \global\let\if@mfp@mpost\iftrue . Similar -changes for the false version and for other switches: \if@mfp@clip, -\if@mfp@centcapt (formerly \if@mfp@centercaptions), \if@mfp@mplabels - -Added \mfp@ifmpost{1}{2} as shorthand for \if@mfp@mpost 1\else 2\fi. -Added \@ifmplabels{1}{2} as shorthand for \if@mfp@mplabels 1\else 2\fi. - -Added \xxxfalse (initializations). Though unnecessary, it provides -documentation of the default. - -Renamed \@if@mfp@beforefileopen to \@if@mfp@filenotopen (since it -could conceivably have been previously opened but then closed). - -Added \setdatadashes, \setdatacolors, and setdatasymbols, to allow -the user to set the dashing style, colors and symbols used when -\dashedlines, \coloredlines , or \pointedlines (or \datapointsonly), -respectively, are in effect. (later removed them, see below). - -Added \@nameuse and \@namedef and replaced a several lines of code -with shorter versions using them. - -Added \@ifmtarg (from ifmtarg.sty) and use it when possible instead -of \mfp@ifempty - -Reordered much of both mfpic.dtx and grafbase.dtx (many times!) to -make documentation more natural. - -Rather extensive revision of \axislabels , mainly so that braces around -the text argument are not prematurely stripped (bug introduced when we -tried to "gracefully" handle empty portions of the arguments). - -Added \@makeother and used it in \mfp@sanitize. - -Removed a number of \newif's : those whose values are always set by -another command. These commands now contain \let\ifxxx\iftrue instead -of \xxxtrue . This saves a couple of strings of pool. - -Added \mf@T for the frequently used string "true" , and \mf@F for -"false" . - -Removed grafdoc.tex from the manifest (grafbase.dtx documents the -grafbase macros). Also removed mf-revu.tex (because I'm lazy). -But will add mfpguide.tex as a short intro/tutorial. - -Set \@mfp@verbtexfalse after writing the verbatimtex in -\opengraphsfile (in case it a user tries to have more than one -\opengraphsfile command in a document). - -The utility \mfp@gettoks that was only used in \tmtitle and -\mftitle has now been used to abbreviate similar \afterassignment -constructs elsewhere. - -Rewrote \curve and \cyclic so both call the same command (as was -done some time ago with \polyline and \polygon though not documented -until now). - Rewrote \noship and added \stopshipping and \resumeshipping so that shipping can be turned off for several figures. -Simplifies \mfpdatacomment so that it just sets the register -\@datacommentchar to the character code. Then \mfp@setcomment -changes the category of \@datacommentchar to 14 (comment). - Added \transformpath , similar to \applyT except that it is a -modification macro for figures. It's argument is a transformer +modification macro for figures. It's argument is a transformer. Added \cutoffafter {<obj>} and \cutoffbefore {<obj>} as prefix macros that cut the following path after its intersection with the named -<obj> (a name defined with \store) +<obj>. Added \trimpath{<dim1>,<dim2>} , a prefix macro that removes the part of the following path within <dim1> of its start and within <dim2> of its end. -Grafbase: - -Added transformedpath (transformer) expr f that reads a path f , applies -the transformer and returns the result. This is to supply the correct -syntax for the \transformpath macro. - -Added gbcutafter and gbcutbefore . Unlike the similarly named MP -macros, these try to cut off as much as possible. Later changed the -names to cutoffafter and cutoffbefore, but gave them standard mfpic -syntax: "vardef cutoffbefore (expr b) expr f =". Also reverted to -essentially the same as the MP definitions. - -Added trimmedpath (expr a,b) to implement \trimpath . - -Rewrote textovalx and textellipsex so they now simply call a common -command, xellipse with a switch set that affects only two lines of the -calculations. - -Slightly revised MF handling of colors. Now the only real difference -between MF and MP is in one macro, makeclr , plus the "color" keyword -("color" still means "numeric" in MF). What makeclr does is accept -three parameters and calculate a gray level in MF, but simply return a -color triple in MP. Then rgb(r, g, b) means - makeclr(snapto(r), snapto(g), snapto(b)) -while all other color functions (except named ) call rgb . - REVISION 0.66 alpha -Grafbase: - -Will try to converge behavior of labels between options mplabels and -nomplabels . Therefor, we add the labels in grafbase on top of the -drawing, after any clipping. We do this in newgblabel (oh, yes, I -renamed newabel to newgblabel) by adding the label to their own -picture: currentlabels. Then currentlabels is added onto the picture -as the very last thing in endmfpic . - -Added emin(x,y) and emax(x,y) as somewhat more efficient versions -of min() and max() . They are vardefs and take two expression -arguments rather than a text parameter with an arbitrary list. - -Added the possibility for textrectx to be given "maximally" rounded -corners: each quarter circle meets the one at the nearest corner so the -end is a semicircle. This is done by allowing the radius parameter to be -a boolean. When it is true, maximal roundedness is used, when false the -corners are not rounded. Provided a mfpic interface by defining the -boolean variable roundends, which is true by default. - -Added TruncateWarn and NoCycleWarn , that print common warning -messages. - -Added pointcolor , the color in which points are drawn by pointd and -in which symbols are drawn by plotsymbol . Now implement pointd with -plotsymbol . However plotnodes , being a drawing command, uses -drawcolor . - -Removed "withcolor fillcolor" from the definition of interior , which -is normally only used in grafbase.mp in some other command that has a -color parameter. The only really "benefit" of having it there was a -dubious one: plotsymbol produced fillcolor solid symbols and -drawcolor open ones. Now all are in pointcolor . Also moved a couple -of other instances of withcolor out of low level commands and into -higher level commands. - -Removed the color parameter from thatchf . For MF to respond to -hatchcolor , the color has to be invoked when the hatching is added to -active_plane , and only the higher level command, thatch , does that. - -Rearranged some of grafbase.dtx for documentation purposes. I am -trying to follow this order: bitwise operations, picture manipulation -commands with use-motivated names, and then the rendering commands that -use those to manipulate active_plane, finally followed by the graph -coordinate rendering commands. - -Added vardefs pnt@#(f) , pre@#(f) and post@#(f) as abbreviations -for point @# of f , precontrol @# of f and postcontrol @# of f . - -Changed a few "max (x,0)" to "abs(x)". These had mostly been not -well-thought-out attempts to gracefully handle erroneous negative values -of "x". The "abs(x)" versions avoid problems in more situations - -Mfpic: - -I will eventually move the import of the picture from the beginning of -the environment (\mfpic) to the end (\endmfpic). Labels (when TeX is -placing them) will be kept in a separate box, and it will be added onto -the picture at the end. +Added \pointcolor , the color in which points are drawn by \point and +in which symbols are drawn by \plotsymbol. The optional parameter of \tlabelrect may now be the literal word "roundends". This will make the radius of the quarter circles equal to half the narrower dimension of the rectangle, giving the "rectangle" semicircular ends. -Added \pointcolor for setting the color of points (for \point) and for -symbols (\plotsymbol), but \plotnodes is interpreted as a drawing -command, and so still uses \drawcolor. - -Changed (again!) the name of \@if@mfp@filenotopen, this time to -\@if@mfp@fileisopen, reversing its sense, and reversed the order of all -commands. - -Moved the undefining of \mfp@filename in \closegraphsfile outside -the conditional (just in case). - - REVISION 0.67 alpha -Grafbase: - -Added knownarray suffix arr, which returns a boolean: true if arr is -the name of a known array (arr is numeric and a positive integer and -arr[1] through arr[arr] are known). Added isdashpat suffix pat, -which applies knownarray to pat.start, pat.rep and pat.finish. - -Added defaultdashes, defaultsymbols, and defaultcolors, which -contains the code to define dashtype0, etc., pointtype0, etc., and -colortype0, etc. - -Added setdatadashes, setdatasymbols, and setdatacolors to allow the -user to change the definitions of the dashtype, pointtype, and -colortype arrays. - -Added getdashpat, getsymbol, and getcolor which perform the modding -operation that used to be done in TeX for reverting (for example) to -pointtype0 after the ninth curve is drawn by \plotdata. - -Changed thepolkadot (in MF) so it is shaded. But we should make it -cover other contents of a region, and we need to subtract black ones -before we add gray ones. Done. +Allow the use of \usetruebbox in an mfpic environment. -Added regularpolygon (expr n) (suffix P) (text eqns), where n -is the number of sides, P is the name of the array of vertices, and -eqns is a pair of equations specifying either the center, P0, and one -vertex, or two vertices. Vertices are numbered anticlockwise (otherwise -two points are not enough data). +Added \reconfigureplot which takes the word `dashes', `colors', or +`symbols' for an argument, followed by a list to be used by \plotdata. +Added \defaultplot which takes the same arguments and restores the +builtin defaults. -Added variables default_tension and fcn_tension to be used as the -default in path creation commands instead of the hard coded values 1 and -1.2. +Added \regpolygon{n}{P}{<eqn1>}{<eqn2>}. -Mfpic: - -Realized that the opening code of \mfpic no longer needs to know the -setting of truebbox. No longer make it an error to use it in an mfpic -environment. - -Replaced the three commands \setdatadashes, \setdatacolors etc., with -a single command \reconfigureplot which takes the word `dashes', -`colors', or `symbols' for an argument. Added \defaultplot which -takes the same arguments and restores the builtin defaults. - -Changed name of \partialpath to \partpath. - -Added \regpolygon{n}{P}{<eqn1>}{<eqn2>} which writes -reguralpolygon (n) (P) (<eqn1>;<eqn2>;) (see above). - -Moved the loading of the figure to \endmfpic. Now tlabels are added -to a box \@alltlabels which is appended to the figure right after it -is loaded. This helps keep most of the box loading in one place. It also -permits the possibility of adding a write-18 capability for on-the-fly -figure creation. +Moved the loading of the figure to \endmfpic. Added \mpobj as a synonym for \mfobj. Added \settension to set the grafbase variable default_tension. -and \setfcntension to set the grafbase variable fcn_tension. - -Docs: +and \setfcntension to set the grafbase variable fcn_tension (this +second one later removed). Started mfpguide.tex, a beginner's tutorial. -Renamed mfpicdoc.tex to mfpicman.tex (can't remember why -- maybe -because I got it confused with mfpdoc.sty). - REVISION 0.68 alpha -Grafbase: +Added complex function sgn Z : returns (0,0) if Z = (0,0), +otherwise unitvector Z. -Improved fcncurve: fcncontrol does `the right thing' when two -successive points have the same x-coordinate. This gives the curve a -decent ending if, instead of extending the sequence by symmetry (in -order to calculate the controls for the endpoints) we extend by making -the additional points equal to the endpoints. Looks _so_ much better! -That was surprising given that all I tried to do was avoid dividing by -0! - -Modified plotnodes as well as plotsymbol so that both store the -relevant pairs in an array and call dosymbols, which draws the symbol -at each coordinate in the array. And dosymbols call another command, -addsymbols, one or two times (once to clear). - -Added boolean: clearsymbols. When true, those symbols place by -plotsymbol or plotnodes which are `clearable' (open paths that satisfy -their first point equals their last) are first closed and filled with -background color in MP (cleared in MF) before being drawn. - -Added complex function sgn Z : returns 0 if Z is (0,0) otherwise -unitvector Z. - -Modified shadepic. The main point to make sure we don't divide by 0. -But also, set dimensions for the picture by doing the lowest resolution -first (thus ensuring both dimensions are at least 2 _pixels_). - -Modified the arrowhead routine so that when the head is filled, the -extra line that closes the head is also drawn. - -Modified arcpps so that angles less than 45 are drawn as a single -segment without passing through a midpoint. - -Modified pathcenter c so it can find the center when c is only an -arc. - -Added barycenter expr t to average the points of the the path t. - -Added makesector expr p, where p is an arc (or any path). Connects -pathcenter p to its endpoints. Could be a little more accurate if we -limited it to arcpps and used arccenter. - -Added boolean: overlaylabels. When true, labels are added to -current_labels, which is then overlayed at endmfpic (new behavior), -when false, labels are added immediately to active_plane. - -Changed these so they produce a path (line segment); used to be they -returned the endpoint. (You can get the point by invoking -"point 1 of altitude n of Q".) - -altitude n of Q the altitude from Q[n] to the opposite side - (produced if necessary). -median n of Q the median from Q[n] to the opposite side -anglebisector n of Q the angle bisector from Q[n] to the opposite - side - -Added - tbezier (expr tens, cyclic) (text lst) -which makes the simple cubic bezier (connects the points in the list -with ..tension tens.. ), as well as its non-tense counterpart bezier. -Also added - mkbezier (expr tens, cyclic) (suffix pts) -which is called by the above after loading the text list in the -the array pts. - -For quadratic Be'ziers we have qbezier, and mkqbezier. - -Removed fcn_tension, using instead 1.2*default_tension. This is for -consistency, all curves responding to the same default - -Added verbatimtex definition to grafbase.mf. It just gobbles -everything to the next semicolon. - -Redid openqbs and closedqbs so they behave like most other -path-making commands: they call textpairs and then some common code, -mkqbs with the name of an array. Also redid mkclosedcbs so it -utilizes mkopencbs. - - -Mfpic: - -Changed the axis commands so they explicitly call \arrow. The purpose -was to ensure that the arrowhead is drawn _after_ the shaft. -Significant only for colored heads. This turns out to make axis@# in -grafbase unnecessary \arrow[l##1]\@figmac{axisline.##2} is all that is -required. - -Added \makesector, a \@closmac prefix that can make a sector out of -a following arc. Useful when the arc is given without a known center -([t] or [s]). - -Added \let\@nl=\@activectrlM to \@mfwrite so that \@nl can -be used for line breaks when catcodes of EOL are already fixed (e.g., in -macro definitions) +Added \makesector, a prefix that can make a sector out of +a following arc. Added check to \opengraphsfile that no previous file is still open. -Added \clearsymbols \noclearsymbols to interface with the grafbase -clearsymbols boolean. Added clearsymbols LaTeX option - -Added \newdef\pinumber{3.14159}. - -Added new option: overlaylabels and commands \overlaylabels and -\nooverlaylabels. Similar in implementation to truebbox: a TeX -boolean is used only to communicate the setting to \opengraphsfile -before a file is open. Otherwise a MetaPost boolean (above) is switched -on or off. +Added option clearsymbols option and commands \clearsymbols and +\noclearsymbols. Open symbols used with \plotsymbol can have their +interiors cleared -Moved \@processdatafile outside \@mfpic@graf@macs. Also moved -\skipBlanksandComments and definition of \mfp@data since they are -used by \@processdatafile. Also moved \skipcoomments because it -seemed it should go along with \skipBlanksandComments. Then I rewrote -the latter to actually call \skipcomments, so now it _has_ to go where -it goes. - -Renamed \mfp@empty to \@empty. +Added option: overlaylabels and commands \overlaylabels and +\nooverlaylabels. Saves mplabels in a separate picture added on at +endmfpic. Added \pairarray{<name>}{<list-of-pairs>} and -\numericarray{<name>}{<list-of-numbers>}. They define, respectively, an -array of pairs and an array of numbers. They can be used outside an mfpic -environments (unlike \patharr), and have the usual scoping properties. +\numericarray{<name>}{<list-of-numbers>} that define an array of pairs +and an array of numbers. -Added \mfbezier[<tens>]{<list>} to interface with grafbase's new -bezier command. Also \closedmfbezier. +Added \mfbezier[<tens>]{<list>} to produce standard MF bezier path. +Also \closedmfbezier. -And the equivalent of (a sequence of) LaTeX \qbezier: \qbeziers and +Add the equivalent of (a sequence of) LaTeX \qbezier: \qbeziers and \closedqbeziers. -Removed \setfcntension because grafbase's fcn_tension was removed. -Adjusted docs. - -Renamed \if@mfp@mpost to \ifmfpmpost so power users can use it to -write code dependent on the figure processor. The commands to change it -are still private: \mfp@mposttrue/false . - -Added the test for file being open to \setmfvariable. Saves a lot of -tokens. It seems we never used it without \@if@mfp@fileisopen. Require -moving it considerably earlier. +Added \ifmfpmpost so users can use it to write code that adapts to the +figure processor. -Added \mfp@let as abbreviation for \mfp@local\let. Likewise -\mfp@def. - -Renamed \mfp@addto to \mfpaddto for power users (i.e., me) and added -\mfpmultiply (same syntax and similar effect). - -Renamed \@if@mfp@fileisopen to \@ifmfpfileisopen (it was just too -many @'s !) - -Changed \everytlabel so it tests for metapost rather than mplabels. -This allows it to be used anywhere without worrying whether \nomplabels -might have cancelled its effect. - -Renamed \massage@data to \parse@data. - -Make sure every write of verbatimtex ... etex ends with a semicolon so -it can be used by grafbase.mf (see above). - - -Docs: - -First version of mfpguide.tex finished. Writing it exposed a number of -bugs that got by the usual suite of tests. It is the first documentation -that actually shows the code and its result together. - -Second version of mfpguide.tex, adds appendices. Planning to ship a -PDF version. +Renamed \mfp@addto to \mfpaddto and added \mfpmultiply for power +users. REVISION 0.69 alpha and 0.69a -Mfpic: - -Rewrote \do@ptparam so its first parameter is the command token (e.g., -\do@ptparam\@draw{} instead of the old \do@ptparam{@draw}{}). Added a -command \simple@opt to process simple optional arguments (those that -don't need further parsing), it calls a second command to read the -option, substitute the default if empty, and then call the command with -the given or supplied option as a normal (brace enclosed) argument. The -idea is to make all empty optional arguments the same as none at all. -Added a command \null@opt which is essentially \do@ptparam with a null -second argument. It turns out that now all commands can be handled by -the last two: \do@ptparam and \alt@ptparam are not used anywhere -anymore, although the bare "\mfp@ifnextchar[" does appear once or twice. - -Make \gridlines honor the settings of \axismargin (see grafbase -section below). +Make \gridlines honor the settings of \axismargin. Added \hgridlines to draw only the horizontal and \vgridlines to draw only the vertical. @@ -2784,270 +650,167 @@ draw only the vertical. Added \gridarcs and \gridrays to draw only the arcs or rays of a polar grid. -Added \setmfboolean for \setmfvariable{boolean}. -Added \setmfnumeric for \setmfvariable{numeric}. - - -Grafbase: - -Rewrote gridlines to honor the axis margins (laxis, baxis, raxis, -and taxis). - -Added hgridlines (expr ysp) and vgridlines (expr xsp) - -Corrected polargrid. How did it ever last this long without a bug -report? The computation of rmin was wrong, and it seems a semicolon -was missing! Added gridarcs (expr rstep) to draw only the arcs, and -gridrays (tstep) for only the rays. Complemented plrpatch with -patcharcs and patchrays for this purpose. - -Corrected polargrid again! It seems the calculation of max and min -angles didn't take into account that angle (0,0) was undefined but -could occur in the code. - -Redid resizedrawpen to save drawpen and currentpen (not just -penwd). - -Removed mindiam and substituted minpenwd in the MP version (they -were equal anyway). +Added \setmfboolean and \setmfnumeric for the indicated instances of +\setmfvariable. Added \InputIfFileExists{mfpic.cfg} in the LaTeX section just before \ProcessOptions. Added code to detect and input mfppatch.tex if it exists. -Docs: - -Added a file plotting example to pictures.tex and lapictures.tex. - -Added some of the new commands to Objects.tex . Converted Objects.tex -to use built-in \ifmfpmpost instead of the ad hoc \ifmetapost -defined in TeXMPobj.tex and LTXMPobj.tex. - -Renamed mfpicman.tex to mfpman.tex. - - -Distribution: - -Packed up for distribution in mfpic69b.zip: - - mfpic.dtx - grafbase.dtx - mfpic.ins - README.txt - install.txt - changes.txt - mfpman.pdf - mfpguide.pdf - examlpes\pictures.tex - examlpes\lapictures.tex - examlpes\forfun.tex - examlpes\data.dat - scr\mfpman.tex - scr\mfpguide.tex - scr\refcard.tex - scr\mfpdoc.sty - -And placed on web site. +Renamed manual to mfpman.tex. Provide a linked mfpman.pdf with +TOC, and two indices. REVISION 0.69c alpha -Grafbase: - -Redid gendashed so that it balances speed versus memory: If there are -n repeated patterns, add sqrt(_n) of them to the picture _v, then -DoClip (_v); coloraddto (drawcolor) (active_plane, _v); <repeat>. Doing -that for each pattern was too slow, doing it only once wasted memory. - -Put on web site. +Lowered MF memory usage of \gendashed (and therefore also for \dashed, +\dotted and \plot). Problem reported by J. Kuben. REVISION 0.69d -Grafbase: - -Modified barchart so that the data can be pairs. Interpret (a,b) -as an interval and creates bars that begin at a and end at b (Gantt -diagrams). +\barchart can now take pair data. Interpreting (a,b) as an interval +and creates bars that begin at a and end at b (Gantt diagrams). -Added predirection@# (expr p) and postdirection@# (expr p) which -give correct results *whenever* the path p is nontrivial. Based on -the easily prove fact (which I only recently discovered) that for a -nontrivial single knot with keypoints A, B, C and D, the direction at A -is towards the first one of B, C or D that is not equal to A. The -predirection[j] returns (0,0) if the path is trivial. If the path is -trivial upto time j, it returns postdirection[j]. postdirection[j] -is analogous. - -Changed headpath to use predirection[length p](p) instead of -point length p of p - precontrol length p of p. +Added \gantt (= \barchart) -Mfpic: +REVISION 0.69f -Added \gantt (= \barchart) +Made [cc] the default for \tlabelrect, etc. Added command +\tlpathjustify to change the default. +Added code to input user additions, defaults, etc., in mfpic.usr, if +it exists. -Distribution: -Placed on web site, announced on c.t.t. +REVISION 0.69g +Bug fix to \tlabelrect. -REVISION 0.69e -Grafbase: +REVISION 0.7 beta, 14 Nov 2003 -Somehow the last version of grafbase included failed to include a -long-ago change to colorsafefill in which non-black fills first -subtract the interior under MF. Corrected that. +Packed up and put on web page and CTAN. -Experimented with a O(log n) loop for filledwith. Made no significant -difference in speed in tests. Must be the extra overhead. Keeping old -O(n) method. -Experimented with using "..tension atleast tens.." in mksmooth and -sclosed. All other tension using operations either call these or -require different treatment. The one case in the test suite where a -visible difference occured, it looked worse. Returned to old method. +REVISION 0.7a beta, 16 Apr 2004 -Proofed grafbase.dvi, the documentation of grafbase macros. +Change one semicolon (;) in a string written by \opengraphsfile to a +colon (:) to work around a bug in the perl scripts mptopdf and/or +texexec. -Docs: +REVISIONS 0.71 alpha--0.8 beta, 17 May 2005 -Proofed mfpguide. +Added + \arc[r], \arc[q], \circle[r], circle[q]. + \arrow* (star form). + \mfpimage...\endmfimage. + \globalsetvariable. + \levelcurve. + \convexcurve, \convexcyclic. + \doubledraw, \parallelpath. + \tlpointsep, \tlpathsep. + \computedspline, \closedcomputedspline. + \fcnspline, \periodicfcnspline, \btwnplrfcn +Changed the "\begingroup" and "\endgroup" written to output +to "\bgroup" and "\egroup". -REVISION 0.69f +Added \assignmfvalue, \mfpreadlog and option mfpreadlog for +requesting and receiving values calculated by MF. -Mfpic: +Added \setmfarray and redefined \numericarray and \pairarray to +call it. Added \colorarray. -Made [cc] the default for \tlabelrect, etc. Added command -\tlpathjustify to change the default. +Added \mfpdraftfont, the font to use in draft when text replaces a +figure. -Added code to input local additions, defaults, etc., in mfpic.usr, if -it exists. +Added loop structures + \mfpfor{<header>} ... \endmfpfor + \mfpwhile{<condition>} ... \endmfpwhile + \mfploop ... \mfpuntil{<condition>} ... \endmfploop -Changed \let\par\relax to \let\par\@empty at the beginning of -\@mfpic. It isn't really necessary to use \relax, we just want -to disable blank lines, we don't necessarily want to skip over them in -\mfp@ifnextchar. In fact, for catching errors, it is better if a blank -line stops \mfp@ifnextchar. +Added a \norender command. -Grafbase: +Added new.txt to contain what used to be the part of changes.txt +that covers the changes since the last version. -New definition of image (writing on active_plane) prevents use of -plain.mp macros (draw and undraw, for example) inside it. Revert -to plain.mp version. +Renamed file refcard.tex to mfpcard.tex. -Change patcharcs and patchrays so they draw on a suffix parameter -This avoids the use of image and saves memory since drawing on a -picture takes less memory (in some circumstances) than creating a -picture and then assigning it. Actually, the least memory would be to -clip each line as created and add that directly to active_plane. +Rewrote mfppatch.tex (formerly empty when there is no patch) to test +the version info and emit a message if there is a mismatch. -Re-examined use (or lack of use) of mono(). Added a few. +Sent to CTAN 13 May 2005. -REVISION 0.69g +REVISION 0.8a 17 May 2005 -Packed it up in mfpic69g.zip and put it on my web site. +Added forgotton \belowfcn plus the documentation of \btwnplrfcn. -Docs: -Added documentation that several arrays become defined after a -\piechart or \barchart command. +REVISION 0.8b 27 Sep 2005 -Added documentation on \mfpicversion. Added a couple of overlooked -\index entries and a couple of commands omitted from the "by type" -list. +Bug fixed concerning unprintable characters in filenames. +NOT uploaded. -Grafbase: -Modified piechart and barchart so that the documentation about -arrays was correct What was missing: pieangle and piedirection -(without numeric suffixes) were not declared, nor given the correct -value. +REVISION 0.89 08 May 2006 -Modified code of textrectx so that documentation of \tlabelrect was -accurate: negative values of the optional argument should now produce -indented arcs and reversed path. All that needed doing was reversing the -order of the path connections for negative radii. +Added: \arrowhead, \arrowtail and \arrowmid for arrows. -Fine tune the calculation of gray level for the MP version of shade so -that the result more closely matches the MF version on modern printers -(600+ DPI). Formula is now gray = 1 - (.88*shadewd/sp)**2, which gives -a lighter gray than before. We therefore rewrite the MF code to permit -shadewd to be as high as sp/.88 before resorting to filling. The -number .88 was empirically arrived at (i.e. I determined what number -made most of the MP and MF shaded figures in Objects.tex look the most -similar on two different printers; then I averaged the two values). +Added: \zigzag, \sinewave and \corkscrew renderings. -Change pi and deg to internals (along with radians). +Added \border, a closed rectangle around the border, adjusted inward by +the axis margin amounts. -Make plrpatch do what it used to do: draw in drawcolor. Also change -polarpatch back to calling plrpatch. +Added \randomizepath and \randomlines. +Added \startbacktext ... \stopbacktext for background text. -REVISION 0.7 beta, 14 Nov 2003 +Added \arccomplement to produce the complementary arc. -Packed up and put on web page and CTAN. +Gave \arc a *-form which produces the complementary arc. +Added \vectorfield and \plrvectorfield. -REVISION 0.7a beta, 16 Apr 2004 +\tlabel command handles a list of points in either TeX or MP label mode. -Change one semicolon (;) in a string written by \opengraphsfile to a -colon (:) to work around a bug in the perl scripts mptopdf and/or -texexec. +Added redefinition of \mpxshipout to correct mpost vers 0.901. +Added \axisline for maximum flexibility in rendering axes. ------------------------------------------------------------------------- +Added \globalassignmfvalue since \global\assignmfvalue didn't work. - Stuff To Do +New dimension \griddotsize for size of grid dots. ------------------------------------------------------------------------- +\circle and \arc now produce grafbase command "fallbackpath" when +the optional letter is not a valid choice. - Pie-in-the-sky stuff +Added \@safe@activestrue to the beginning of \mfpic and +\@safe@activesfalse to each tlabel placed by TeX and to tcaption. -A command to obtain the boundary of a region defined by F(x,y), where -F is a boolean valued function. Easy if the region is convex. +Added \everymfpic and \everyendmfpic. -A command to draw a path paralleling another path. Will need -predirection and postdirection and some notion of what to do when -they differ. Inside corners/cusps should be easy, +Added \closedcurve as an alias for \cyclic, \closedconvexcurve +for \convexcyclic and \closedpolyline for \polygon. - /\ /\ - / \ --> / \ - / \ / /\ \ +Allow loops outside mfpic environments. -outside corners might need some limit on "mitering": - __ /\ - / \ / \ - /\ --> / /\ \ or / /\ \ or a rounded (circular?) connection. +Added \mfppiechart and \mfpbarchart as versions of \piechart and +\barchart that are available outside the mfpic environment. The old +names can still be used inside the environment. +Correct centeredcaptions (broken in LaTeX). -A command to render a path with a "photon"? +Added \pageref commands to the "List of commands by type" in +mfpman.tex. -Try 'write18' on-the-fly creation of figures? Most straightforward would -be to mimic \opengraphsfile with each \mfpic. That would require -rethinking those commands that write to the graph file _outside_ an -mfpic figure. Maybe redo \mfsrc so it added to some macro or token list, -and write _that_ after the file is opened. +Corrected behavior of mfpic environments with regard to \everypar. -Or maybe: \opengraphsfile at beginning of document, then -\closegraphsfile just before processing the figure, then \opengraphsfile -again right afterwards. Then only commands we insert occur when a file -is closed. -Truebbox for MF? Might be done if every drawing command kept track of -bounding boxes (commands that fill, hatch, etc. already get this info -with gbbox). Would just need to add it to plotsymbol (for pointd and -plotnodes) and to the drawing commands (drawn, gendashed, etc.). Might -want to skip the lower-level things like safedraw, safefill, etc. (or -maybe add it _only_ there). Don't want to do it for anything that -doesn't add to active_plane. But some things only add pictures to -active_plane and by then it's impossible to determine the size. Once a -bounding box is known, endmfpic can adjust tfm dimensions. and shift the -picture before shipout. +REVISION 0.90 01 Jun 2006 +Uploaded to CTAN |