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Diffstat (limited to 'Master/bin/alpha-linux/tpic2pdftex')
| -rwxr-xr-x | Master/bin/alpha-linux/tpic2pdftex | 407 |
1 files changed, 407 insertions, 0 deletions
diff --git a/Master/bin/alpha-linux/tpic2pdftex b/Master/bin/alpha-linux/tpic2pdftex new file mode 100755 index 00000000000..70c1a33c7e8 --- /dev/null +++ b/Master/bin/alpha-linux/tpic2pdftex @@ -0,0 +1,407 @@ +#!/bin/sh - +# +# $Id: tpic2pdftex,v 1.94 2007/01/14 19:05:32 hahe Exp $ +# +# Experimental awk-script for conversion of tpic \specials as produced +# by (groff-)pic into pdfTeX \pdfliteral sections for further processing +# by pdftex. +# +# Usage: +# $ pic -t somefile.pic | tpic2pdftex > somefile.tex +# +# Process somefile.tex by pdftex/pdflatex. +# +# tpic \special desciption see e. g.: +# Goossens, Rahtz, Mittelbach: The LaTeX Graphics Companion, +# Addison-Wesley, 1997, pp. 464. +# +# Bugs: +# Spline curve shapes not fully authentic (unknown algorithm). +# Bounding box does not care for line thickness (groff pic feature). +# Splines might be outside bounding box. +# +# Copyright (C) 2002--2004 by Hartmut Henkel +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or (at +# your option) any later version. +# +# This program is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. +# See the GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the +# Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, +# MA 02111-1307 USA +# +# The author may be contacted via the e-mail address +# +# hartmut_henkel@gmx.de +# +# NEWS: +# 14 Jan. 2007 - make it executable shell script, calling awk +# 16 Dec. 2004 - Replaced // {print} by {print} (some AWKs did choke) +# 09 Apr. 2004 - Locale check: Decimal point in float numbers? +# 30 Oct. 2003 - Replaced print statements by printf to avoid +# underflow numbers like 1e-14 in \pdfliterals. Remove trailing +# zeroes of floating point numbers. +# 02 May 2003 - Lines starting with \ allow TeX insertions, +# e. g. of pdfTeX \pdfliteral{} +# 29 Apr. 2003 - Changed for pic of groff 1.19 +# 16 Mar. 2003 - Bug corrected: Dashed lines shorter than minimum +# dash-pause length now drawn solid. +# 11 Nov. 2002 - Spline drawing improved: First half of first and last +# half of last spline segments are drawn by straight lines. +# 28 Nov. 2002 - Arc and circle drawing cleaned up. Full circle is now +# drawn by 4 Bezier curves, as is common use. Arcs split evenly into +# Bezier curves, to minimize max. error. +# 02 Dec. 2002 - Experimental pic (groff > 1.18.1) with improved +# vertical picture positioning supported. +# 04 Dec. 2002 - Experiment with modified pic (\vtop -> \vbox), +# Formula for Bezier constant c reduced. +# +######################################################################## + +AWK=${AWK:-gawk} +export LANG="C" + +AWKPROG=' +# begin of awk input file + +function qprintf(a) { + gsub(/0* /," ", a); # trailing zeroes in %f + gsub(/\. /," ", a); # orphaned decimal dots + gsub(/0*]/,"]", a); # trailing zeroes in brackets + gsub(/0X/,"0", a); # guard integer zeroes + gsub(/-0 /,"0 ", a); # correct -0 to 0 + print a; +} + +function startpdfliteral() { + if (pdfliteral == 0) { + print "\\pdfliteral{"; + printf("q [] 0 d %d J %d j\n", linecap, linejoin); # no qprintf! + qprintf(sprintf("%f w", linethickness * wscale)); + } + pdfliteral = 1; +} + +function stoppdfliteral() { + if (pdfliteral == 1) { + print "Q"; + print "}%"; + } + pdfliteral = 0; +} + +######################################################################## + +BEGIN{ + wscale = 72.0 / 1000; + tpicmode = 0; + pdfliteral = 0; + pointbuf = 0; + filled = 0; + fillval = 0; + linecap = 1; + linejoin = 1; + defaultlinethickness = 8; + drawarc = 0; + pi = atan2(0, -1); + if (match(sprintf("%f", 0.5), /\./) == 0) { + print "ERROR: Floating point numbers miss decimal point. Do" + print " export LANG=\"C\"" + print "before calling awk." + print "ERROR: Floating point numbers miss decimal point. Do" > "/dev/stderr" + print " export LANG=\"C\"" > "/dev/stderr" + print "before calling awk." > "/dev/stderr" + exit 1; + } +} + +######################################################################## + +# the following expression triggers tpic processing for pic <= 1.18.1 + +/^\\setbox\\graph=\\vtop{/ { + pdfliteral = 0; + tpicmode = 1; + linethickness = defaultlinethickness; +} + +# the following expression triggers tpic processing for pic = 1.19 + +/^\\expandafter\\setbox\\csname graph\\endcsname/ { + pdfliteral = 0; + tpicmode = 1; + linethickness = defaultlinethickness; +} + +# TeX parts end \pdfliteral, and also TeX parts embedded in .PS ... .PE +# section end \pdfliteral + +/^ *\\graphtemp|^ *\\rlap|^ *\\advance|^\\|^ *\\hbox/ { + if(tpicmode == 1) + stoppdfliteral(); +} + +/^}%/ { + if(tpicmode == 1) + tpicmode = 0; +} + +######################################################################## + +# all specials handling + +/^ *\\special/ { + if(tpicmode == 1) + startpdfliteral(); +} + +# <pn> set pen size + +/^ *\\special{pn/ { + gsub(/[{}]/, " "); + linethickness = $3 + 0; + qprintf(sprintf("%f w", linethickness * wscale)); + next; +} + +# <pa> add point to path + +/^ *\\special{pa/ { + gsub(/[{}]/, " "); + x[pointbuf] = $3 + 0; + y[pointbuf] = $4 + 0; + pointbuf++; + next; +} + +# <fp> print path as straight lines + +/^ *\\special{fp/ { + if (filled == 1) + qprintf(sprintf("q %f g", 1 - fillval)); + qprintf(sprintf("%f %f m", x[0] * wscale, -y[0] * wscale)); + for (i = 1; i < pointbuf; i++) + qprintf(sprintf("%f %f l", x[i] * wscale, -y[i] * wscale)); + if (filled == 1) + print "B Q"; + else + print "S"; + pointbuf = 0; + filled = 0; + next; +} + +# <da> print path as straight dashed lines + +/^ *\\special{da/ { + gsub(/[{}]/, " "); + don = ($3 + 0) * 1000; + if (filled == 1) { + qprintf(sprintf("q %f g", 1 - fillval)); + qprintf(sprintf("%f %f m", x[0] * wscale, -y[0] * wscale)); + for (i = 1; i < pointbuf; i++) + qprintf(sprintf("%f %f l", x[i] * wscale, -y[i] * wscale)); + print "f Q"; + } + for (i = 1; i < pointbuf; i++) { + dx = x[i] - x[i - 1]; + dy = y[i] - y[i - 1]; + len = sqrt(dx * dx + dy * dy); + non = int(0.5 * len / don + 0.75); + noff = non - 1; + lon = don * non; + loff = len - lon; + if(noff > 0) { + doff = loff / noff; + qprintf(sprintf("q [%f %f] 0X d", don * wscale, doff * wscale)); + } else { + print "q [] 0 d"; + } + qprintf(sprintf("%f %f m", x[i - 1] * wscale, -y[i - 1] * wscale)); + qprintf(sprintf("%f %f l", x[i] * wscale, -y[i] * wscale)); + print "S Q"; + } + pointbuf = 0; + filled = 0; + next; +} + +# <dt> print path as straight dotted lines + +/^ *\\special{dt/ { + gsub(/[{}]/, " "); + dt = ($3 + 0) * 1000; + if (filled == 1) { + qprintf(sprintf("q %f g", 1 - fillval)); + qprintf(sprintf("%f %f m", x[0] * wscale, -y[0] * wscale)); + for (i = 1; i < pointbuf; i++) + qprintf(sprintf("%f %f l", x[i] * wscale, -y[i] * wscale)); + print "f Q"; + } + for (i = 1; i < pointbuf; i++) { + dx = x[i] - x[i - 1]; + dy = y[i] - y[i - 1]; + len = sqrt(dx * dx + dy * dy); + dl = int (len / dt + 0.5); + if (!dl) + dtl = len; + else + dtl = len / dl; + qprintf(sprintf("q [0X %f] 0X d", dtl * wscale)); + qprintf(sprintf("%f %f m", x[i - 1] * wscale, -y[i - 1] * wscale)); + qprintf(sprintf("%f %f l", x[i] * wscale, -y[i] * wscale)); + print "S Q"; + } + pointbuf = 0; + filled = 0; + next; +} + +# <ip> like <fp>, but path actually not drawn + +/^ *\\special{ip/ { + if (filled == 1) + qprintf(sprintf("q %f g", 1 - fillval)); + qprintf(sprintf("%f %f m", x[0] * wscale, -y[0] * wscale)); + for (i = 1; i < pointbuf; i++) + qprintf(sprintf("%f %f l", x[i] * wscale, -y[i] * wscale)); + if (filled == 1) + print "f Q"; + else + print "f"; + pointbuf = 0; + filled = 0; + next; +} + +# <sp> like <fp>, but path printed as splines + +/^ *\\special{sp/ { + gsub(/[{}]/, " "); + don = ($3 + 0) * 1000; + a = 0.68; # fudge, visually optimized + x[pointbuf] = x[pointbuf - 1]; + y[pointbuf] = y[pointbuf - 1]; + + if (don > 0) + qprintf(sprintf("q [%f] 0X d", don * wscale)); + if (don < 0) + qprintf(sprintf("q [0X %f] 0X d", -don * wscale)); + + qprintf(sprintf("%f %f m", x[0] * wscale, -y[0] * wscale)); + + if(pointbuf < 3) + qprintf(sprintf("%f %f l", x[pointbuf - 1] * wscale, -y[pointbuf - 1] * wscale)); + else { + qprintf(sprintf("%f %f l", 0.5 * (x[0] + x[1]) * wscale, \ + -0.5 * (y[0] + y[1]) * wscale)); # start straight, see cstr116.ps + for (i = 1; i < pointbuf - 1; i++) + qprintf(sprintf("%f %f %f %f %f %f c", \ + (a * x[i] + (1 - a) * 0.5 * (x[i] + x[i - 1])) * wscale, \ + -(a * y[i] + (1 - a) * 0.5 * (y[i] + y[i - 1])) * wscale, \ + (a * x[i] + (1 - a) * 0.5 * (x[i] + x[i + 1])) * wscale, \ + -(a * y[i] + (1 - a) * 0.5 * (y[i] + y[i + 1])) * wscale, \ + 0.5 * (x[i] + x[i + 1]) * wscale, -0.5 * (y[i] + y[i + 1]) * wscale)); + qprintf(sprintf("%f %f l", x[pointbuf - 1] * wscale, -y[pointbuf - 1] * wscale)); + } + if (filled == 1) { + qprintf(sprintf("q %f g", 1 - fillval)); + print "B Q"; + } + else + print "S"; + if (don != 0) + print "Q"; + pointbuf = 0; + filled = 0; + next; +} + +# <sh> prepare shading of object interior + +/^ *\\special{sh/ { + gsub(/[{}]/, " "); + fillval = $3 + 0; + filled = 1; + next; +} + +# <ar> draw arc +# <ia> like <ar>, but arc actually not drawn + +/^ *\\special{ar/ { + drawarc = 1; +} + +/^ *\\special{ar|^ *\\special{ia/ { + gsub(/[{}]/, " "); + xc = $3 + 0; + yc = $4 + 0; + rx = $5 + 0; + ry = $6 + 0; + s = $7 + 0; + e = $8 + 0; + if (e - s > 2 * pi) e = s + 2 * pi; + if (s - e > 2 * pi) e = s - 2 * pi; + curvespercircle = 4; # max. number Bezier curves per circle + phi_max = 1.001 * 2 * pi / curvespercircle; + if (e > s) + imax = int ((e - s) / phi_max) + 1; + else + imax = int ((s - e) / phi_max) + 1; + phi = (e - s) / imax; + + # parameter for Bezier control vectors, c(90 deg.) = 0.55228...: + c = 4 * (1 - cos(0.5 * phi)) / (3 * sin(0.5 * phi)); + + x0 = rx * cos(s) + xc; + y0 = ry * sin(s) + yc; + qprintf(sprintf("%f %f m", x0 * wscale, -y0 * wscale)); + for (i = 0; i < imax; i++) { + x1 = x0 - rx * c * sin(s + i * phi); + y1 = y0 + ry * c * cos(s + i * phi); + x3 = rx * cos(s + (i + 1) * phi) + xc; + y3 = ry * sin(s + (i + 1) * phi) + yc; + x2 = x3 + rx * c * sin(s + (i + 1) * phi); + y2 = y3 - ry * c * cos(s + (i + 1) * phi); + qprintf(sprintf("%f %f %f %f %f %f c", x1 * wscale, -y1 * wscale, \ + x2 * wscale, -y2 * wscale, x3 * wscale, -y3 * wscale)); + x0 = x3; + y0 = y3; + } + if(drawarc == 1) { + if (filled == 1) { + qprintf(sprintf("h q %f g", 1 - fillval)); + print "B Q"; + } + else + print "S"; + } else { + if (filled == 1) { + qprintf(sprintf("h q %f g", 1 - fillval)); + print "f Q"; + } + else + print "f"; + } + filled = 0; + drawarc = 0; + next; +} + +######################################################################## + +{print} + +######################################################################## +' +# end of awk input file + +$AWK "$AWKPROG" "$@" |