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The C Users' Group Library 1994 August
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wc-cdrom-cusersgrouplibrary-1994-08.iso
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vol_300
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334_02
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post.trm
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1991-02-05
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329 lines
/* GNUPLOT - post.trm */
/*
* Copyright (C) 1990
*
* Permission to use, copy, and distribute this software and its
* documentation for any purpose with or without fee is hereby granted,
* provided that the above copyright notice appear in all copies and
* that both that copyright notice and this permission notice appear
* in supporting documentation.
*
* Permission to modify the software is granted, but not the right to
* distribute the modified code. Modifications are to be distributed
* as patches to released version.
*
* This software is provided "as is" without express or implied warranty.
*
* This file is included by ../term.c.
*
* This terminal driver supports:
* postscript, psbig, epsf1, epsf2
*
* AUTHORS
* Russell Lang
*
* send your comments or suggestions to (pixar!info-gnuplot@sun.com).
*
*/
/* PostScript driver by Russell Lang, rjl@monu1.cc.monash.edu.au */
int pspage=0; /* page count */
int ps_path_count=0; /* count of lines in path */
int ps_ang=0; /* text angle */
enum JUSTIFY ps_justify=LEFT; /* text is flush left */
char *ps_font; /* name of font in use */
BOOLEAN ps_big; /* true if big font used */
char *PS_header[] = {
"/vpt2 vpt 2 mul def\n",
"/hpt2 hpt 2 mul def\n",
/* flush left show */
"/Lshow { currentpoint stroke moveto\n",
" 0 vshift rmoveto show } def\n",
/* flush right show */
"/Rshow { currentpoint stroke moveto\n",
" dup stringwidth pop neg vshift rmoveto show } def\n",
/* centred show */
"/Cshow { currentpoint stroke moveto\n",
" dup stringwidth pop -2 div vshift rmoveto show } def\n",
/* Border Lines */
"/BL { stroke gnulinewidth 2 mul setlinewidth } def\n",
/* Axes Lines */
"/AL { stroke gnulinewidth 2 div setlinewidth } def\n",
/* Plot Lines */
"/PL { stroke gnulinewidth setlinewidth } def\n",
/* Line Types */
"/LTb { BL [] 0 setdash } def\n", /* border */
"/LTa { AL [1 dl 2 dl] 0 setdash } def\n", /* axes */
"/LT0 { PL [] 0 setdash } def\n",
"/LT1 { PL [4 dl 2 dl] 0 setdash } def\n",
"/LT2 { PL [2 dl 3 dl] 0 setdash } def\n",
"/LT3 { PL [1 dl 1.5 dl] 0 setdash } def\n",
"/LT4 { PL [5 dl 2 dl 1 dl 2 dl] 0 setdash } def\n",
"/LT5 { PL [4 dl 3 dl 1 dl 3 dl] 0 setdash } def\n",
"/LT6 { PL [2 dl 2 dl 2 dl 4 dl] 0 setdash } def\n",
"/LT7 { PL [2 dl 2 dl 2 dl 2 dl 2 dl 4 dl] 0 setdash } def\n",
"/LT8 { PL [2 dl 2 dl 2 dl 2 dl 2 dl 2 dl 2 dl 4 dl] 0 setdash } def\n",
"/M {moveto} def\n",
"/L {lineto} def\n",
"/P { LT0\n", /* Point */
" currentlinewidth 2 div sub moveto\n",
" 0 currentlinewidth rlineto stroke } def\n",
"/D { LT0 2 copy vpt add moveto\n", /* Diamond */
" hpt neg vpt neg rlineto hpt vpt neg rlineto\n",
" hpt vpt rlineto hpt neg vpt rlineto closepath stroke\n",
" P } def\n",
"/A { LT0 vpt sub moveto 0 vpt2 rlineto\n", /* Plus (Add) */
" currentpoint stroke moveto\n",
" hpt neg vpt neg rmoveto hpt2 0 rlineto stroke\n",
" } def\n",
"/B { LT0 2 copy exch hpt sub exch vpt add moveto\n", /* Box */
" 0 vpt2 neg rlineto hpt2 0 rlineto 0 vpt2 rlineto\n",
" hpt2 neg 0 rlineto closepath stroke\n",
" P } def\n",
"/C { LT0 exch hpt sub exch vpt add moveto\n", /* Cross */
" hpt2 vpt2 neg rlineto currentpoint stroke moveto\n",
" hpt2 neg 0 rmoveto hpt2 vpt2 rlineto stroke } def\n",
"/T { LT0 2 copy vpt 1.12 mul add moveto\n", /* Triangle */
" hpt neg vpt -1.62 mul rlineto\n",
" hpt 2 mul 0 rlineto\n",
" hpt neg vpt 1.62 mul rlineto closepath stroke\n",
" P } def\n",
"/S { LT0 2 copy A C} def\n", /* Star */
NULL
};
#define PS_XMAX 3600
#define PS_YMAX 2520
#define PS_XLAST (PS_XMAX - 1)
#define PS_YLAST (PS_YMAX - 1)
#define PS_VTIC (PS_YMAX/80)
#define PS_HTIC (PS_YMAX/80)
#define PS_SC (PS_XMAX/360) /* scale is 1pt = 10 units */
#define PS_LW (0.25*PS_SC) /* linewidth = 0.25 pts */
#define PS_VCHAR1 (7*PS_SC) /* 7 point characters */
#define PS_HCHAR1 (7*PS_SC*6/10)
#define PS_VCHAR2 (11*PS_SC) /* 11 point characters */
#define PS_HCHAR2 (11*PS_SC*6/10)
EPSF1_init()
{
ps_big = FALSE;
ps_font = "Courier";
/* the font could also be "Courier-Bold" or "Times-Roman" etc. */
}
EPSF2_init()
{
ps_big = TRUE;
ps_font = "Courier";
}
EPSF_graphics()
{
int i;
fprintf(outfile,"%%!PS-Adobe-2.0 EPSF-2.0\n");
fprintf(outfile,"%%%%Creator: gnuplot\n");
fprintf(outfile,"%%%%DocumentFonts: %s\n", ps_font);
fprintf(outfile,"%%%%DocumentNeededFonts: %s\n", ps_font);
fprintf(outfile,"%%%%BoundingBox: 0 0 %d %d\n",
(int)(xsize*(PS_XMAX)/PS_SC+0.5),
(int)(ysize*(PS_YMAX)/PS_SC+0.5) );
fprintf(outfile,"%%%%EndComments\n");
fprintf(outfile,"40 dict begin\n");
fprintf(outfile,"/gnulinewidth %.3f def\n",PS_LW);
fprintf(outfile,"/vshift %d def\n",
ps_big ? -PS_VCHAR2/3 : -PS_VCHAR1/3);
fprintf(outfile,"/dl {%d mul} def\n",PS_SC); /* dash length */
fprintf(outfile,"/hpt %.1f def\n",PS_HTIC/2.0);
fprintf(outfile,"/vpt %.1f def\n",PS_VTIC/2.0);
for ( i=0; PS_header[i] != NULL; i++)
fprintf(outfile,"%s",PS_header[i]);
fprintf(outfile,"%%%%EndProlog\n");
fprintf(outfile,"%%%%BeginSetup\n");
fprintf(outfile,"/Gnu_save save def\n");
fprintf(outfile,"%.3f %.3f scale\n",1.0/PS_SC,1.0/PS_SC);
fprintf(outfile,"0 setgray\n");
fprintf(outfile,"%%%%IncludeFont: %s\n", ps_font);
fprintf(outfile,"/%s findfont %d ", ps_font,
ps_big ? PS_VCHAR2 : PS_VCHAR1 );
fprintf(outfile,"scalefont setfont\n");
fprintf(outfile,"newpath\n");
ps_path_count = 0;
fprintf(outfile,"%%%%EndSetup\n");
}
EPSF_text()
{
fprintf(outfile,"stroke\nGnu_save restore\n");
fprintf(outfile,"showpage\n");
ps_path_count = 0;
fprintf(outfile,"%%%%Trailer\n");
fprintf(outfile,"end\n");
}
EPSF_reset()
{
}
PS1_init()
{
EPSF1_init();
PS_init();
}
PS2_init()
{
EPSF2_init();
PS_init();
}
PS_init()
{
fprintf(outfile,"%%!PS-Adobe-2.0\n");
fprintf(outfile,"%%%%Creator: gnuplot\n");
fprintf(outfile,"%%%%DocumentFonts: %s\n", ps_font);
fprintf(outfile,"%%%%DocumentNeededFonts: %s\n", ps_font);
fprintf(outfile,"%%%%Pages: (atend)\n");
fprintf(outfile,"%%%%BoundingBox: %d 50 550 %d\n",
(int)(550.5-ysize*(PS_YMAX)/PS_SC*2),
(int)(50.5+xsize*(PS_XMAX)/PS_SC*2) );
fprintf(outfile,"%%%%EndComments\n");
fprintf(outfile,"/GnuTransform {\n");
fprintf(outfile," 90 rotate\n 50 -550 translate\n 2 2 scale\n");
fprintf(outfile,"} def\n");
fprintf(outfile,"%%%%EndProlog\n");
pspage = 0;
}
PS_graphics()
{
fprintf(outfile,"%%%%Page: ? %d\n",++pspage);
fprintf(outfile,"gsave\nGnuTransform\n");
fprintf(outfile,"%%%%BeginDocument: EPSF\n");
fprintf(outfile,"1 dict begin\n/showpage {} def\n");
EPSF_graphics();
}
PS_text()
{
EPSF_text();
fprintf(outfile,"%%%%EndDocument\n");
fprintf(outfile,"end\nshowpage\ngrestore\n");
}
PS_reset()
{
fprintf(outfile,"%%%%Trailer\n");
fprintf(outfile,"%%%%Pages: %d\n",pspage);
}
PS_linetype(linetype)
int linetype;
{
char *line = "ba012345678";
fprintf(outfile,"LT%c\n", line[(linetype%9)+2]);
ps_path_count = 0;
}
PS_move(x,y)
unsigned int x,y;
{
fprintf(outfile,"%d %d M\n", x, y);
ps_path_count += 1;
}
PS_vector(x,y)
unsigned int x,y;
{
fprintf(outfile,"%d %d L\n", x, y);
ps_path_count += 1;
if (ps_path_count >= 400) {
fprintf(outfile,"currentpoint stroke moveto\n");
ps_path_count = 0;
}
}
PS_put_text(x,y,str)
unsigned int x, y;
char *str;
{
char ch;
PS_move(x,y);
if (ps_ang != 0)
fprintf(outfile,"currentpoint gsave translate %d rotate 0 0 moveto\n"
,ps_ang*90);
putc('(',outfile);
ch = *str++;
while(ch!='\0') {
if ( (ch=='(') || (ch==')') || (ch=='\\') )
putc('\\',outfile);
putc(ch,outfile);
ch = *str++;
}
switch(ps_justify) {
case LEFT : fprintf(outfile,") Lshow\n");
break;
case CENTRE : fprintf(outfile,") Cshow\n");
break;
case RIGHT : fprintf(outfile,") Rshow\n");
break;
}
if (ps_ang != 0)
fprintf(outfile,"grestore\n");
ps_path_count = 0;
}
int PS_text_angle(ang)
int ang;
{
ps_ang=ang;
return TRUE;
}
int PS_justify_text(mode)
enum JUSTIFY mode;
{
ps_justify=mode;
return TRUE;
}
/* postscript point routines */
PS_point(x,y,number)
int x,y;
int number;
{
char *point = "PDABCTS";
number %= POINT_TYPES;
if (number < -1)
number = -1; /* negative types are all 'dot' */
fprintf(outfile,"%d %d %c\n", x, y, point[number+1]);
ps_path_count = 0;
}