gnuplot-old/term/metapost.trm at master · gnuplot/gnuplot-old · GitHub

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/* Hello, Emacs, this is -*-C-*-

* $Id: metapost.trm,v 1.48 2017-08-08 04:10:33 sfeam Exp $

/* GNUPLOT - metapost.trm */

/*[

* 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 complete modified source code. Modifications are to

* be distributed as patches to the released version. Permission to

* distribute binaries produced by compiling modified sources is granted,

* provided you

* 1. distribute the corresponding source modifications from the

* released version in the form of a patch file along with the binaries,

* 2. add special version identification to distinguish your version

* in addition to the base release version number,

* 3. provide your name and address as the primary contact for the

* support of your modified version, and

* 4. retain our contact information in regard to use of the base

* software.

* Permission to distribute the released version of the source code along

* with corresponding source modifications in the form of a patch file is

* granted with same provisions 2 through 4 for binary distributions.

* This software is provided "as is" without express or implied warranty

* to the extent permitted by applicable law.

]*/

/* 1999/04/22

* GNUPLOT -- metapost.trm

* This terminal driver supports:

* Metapost Commands

* Based on metafont.trm, written by

* Pl Hedne

* Trondheim, Norway

* Pal.Hedne@termo.unit.no;

* with improvements by Carsten Steger

* and pstricks.trm, written by

* David Kotz and Raymond Toy

* Adapted to metapost by:

* Daniel H. Luecking <luecking@comp.uark.edu> and

* L Srinivasa Mohan <mohan@chemeng.iisc.ernet.in>

#include "driver.h"

#ifdef TERM_REGISTER

register_term(mp)

#endif

#ifdef TERM_PROTO

TERM_PUBLIC void MP_options __PROTO((void));

TERM_PUBLIC void MP_init __PROTO((void));

TERM_PUBLIC void MP_graphics __PROTO((void));

TERM_PUBLIC void MP_text __PROTO((void));

TERM_PUBLIC void MP_linetype __PROTO((int linetype));

TERM_PUBLIC void MP_move __PROTO((unsigned int x, unsigned int y));

TERM_PUBLIC void MP_point __PROTO((unsigned int x, unsigned int y, int number));

TERM_PUBLIC void MP_pointsize __PROTO((double size));

TERM_PUBLIC void MP_linewidth __PROTO((double width));

TERM_PUBLIC void MP_vector __PROTO((unsigned int ux, unsigned int uy));

TERM_PUBLIC void MP_arrow __PROTO((unsigned int sx, unsigned int sy,

unsigned int ex, unsigned int ey,

int head));

TERM_PUBLIC void MP_put_text __PROTO((unsigned int x, unsigned int y, const char str[]));

TERM_PUBLIC int MP_justify_text __PROTO((enum JUSTIFY mode));

TERM_PUBLIC int MP_text_angle __PROTO((int ang));

TERM_PUBLIC void MP_reset __PROTO((void));

TERM_PUBLIC int MP_set_font __PROTO((const char *font));

TERM_PUBLIC void MP_boxfill __PROTO((int style, unsigned int x1,

unsigned int y1, unsigned int width,

unsigned int height));

TERM_PUBLIC int MP_make_palette __PROTO((t_sm_palette *));

TERM_PUBLIC void MP_previous_palette __PROTO((void));

TERM_PUBLIC void MP_set_color __PROTO((t_colorspec *));

TERM_PUBLIC void MP_filled_polygon __PROTO((int, gpiPoint *));

TERM_PUBLIC void MP_dashtype __PROTO((int type, t_dashtype *custom_dash_type));

/* 5 inches wide by 3 inches high (default) */

#define MP_XSIZE 5.0

#define MP_YSIZE 3.0

/* gnuplot units will be one pixel if printing device has this

resolution. Too small resolutions (like 300) can give rough

appearence to curves when user tries to smooth a curve by choosing

high sampling rate. */

#define MP_DPI (2400)

#define MP_XMAX (MP_XSIZE*MP_DPI)

#define MP_YMAX (MP_YSIZE*MP_DPI)

#define MP_HTIC (5*MP_DPI/72) /* nominally 5pt */

#define MP_VTIC (5*MP_DPI/72) /* " 5pt */

#define MP_HCHAR (MP_DPI*53/10/72) /* " 5.3pt */

#define MP_VCHAR (MP_DPI*11/72) /* " 11pt */

#endif /* TERM_PROTO */

#ifndef TERM_PROTO_ONLY

#ifdef TERM_BODY

static double MP_xsize = MP_XSIZE;

static double MP_ysize = MP_YSIZE;

/* static double MP_xmax = MP_XMAX;

static double MP_ymax = MP_YMAX;

* unused, for now

static int MP_posx;

static int MP_posy;

static char MP_fontname[MAX_ID_LEN + 1];

static double MP_fontsize;

static double MP_textmag;

static enum JUSTIFY MP_justify = LEFT;

static int MP_ang = 0;

static int MP_char_code = 0;

/* number of nodes in an output line so far */

static int MP_linecount = 1;

/* Number of point types */

#define MP_POINT_TYPES 10

/* Number of line types */

#define MP_LINE_TYPES 8

/* are we in the middle of a MP path? */

static TBOOLEAN MP_inline = FALSE;

/* colored or dashed lines? */

static TBOOLEAN MP_color = FALSE;

static TBOOLEAN MP_solid = FALSE;

/* compatability mode*/

/* static TBOOLEAN MP_notex = FALSE; */

#define MP_NO_TEX 0

#define MP_TEX 1

#define MP_LATEX 2

static int MP_tex = MP_TEX;

/* add usepackage instructions for PSNFSS ? */

#define MP_PSNFSS_NONE 0

#define MP_PSNFSS_7 1

#define MP_PSNFSS_8 2

static int MP_psnfss = MP_PSNFSS_NONE;

/* should amstex packages be included? */

static int MP_amstex = 0;

/* add a4paper option to documentclass */

static int MP_a4paper = 0;

/* write a prologues line */

static int MP_prologues = -1;

/* has color changed? */

static int MP_color_changed = 0;

static int MP_dash_changed = 0;

/* has a font change taken place? */

static TBOOLEAN MP_fontchanged = FALSE;

/* The old types */

static int MP_oldline = -2;

/* The old sizes */

static double MP_oldptsize = 1.0;

static double MP_oldpen = 1.0;

/* terminate any path in progress */

static void MP_endline __PROTO((void));

/* max number of path nodes before a newline */

#define MP_LINEMAX 5

enum MP_id {

MP_OPT_MONOCHROME, MP_OPT_COLOUR,

MP_OPT_SOLID, MP_OPT_DASHED,

MP_OPT_NOTEX, MP_OPT_TEX, MP_OPT_LATEX,

MP_OPT_A4PAPER,

MP_OPT_PSNFSS, MP_OPT_PSNFSS_V7, MP_OPT_NOPSNFSS,

MP_OPT_AMSTEX,

MP_OPT_FONT, MP_OPT_FONTSIZE,

MP_OPT_PROLOGUES, MP_OPT_NOPROLOGUES,

MP_OPT_MAGNIFICATION, MP_OPT_OTHER

};

static struct gen_table MP_opts[] = {

{ "mo$nochrome", MP_OPT_MONOCHROME },

{ "c$olor", MP_OPT_COLOUR },

{ "c$olour", MP_OPT_COLOUR },

{ "s$olid", MP_OPT_SOLID },

{ "da$shed", MP_OPT_DASHED },

{ "n$otex", MP_OPT_NOTEX },

{ "t$ex", MP_OPT_TEX },

{ "la$tex", MP_OPT_LATEX },

{ "a4$paper", MP_OPT_A4PAPER },

{ "am$stex", MP_OPT_AMSTEX },

{ "ps$nfss", MP_OPT_PSNFSS },

{ "psnfss-v$ersion7", MP_OPT_PSNFSS_V7 },

{ "nops$nfss", MP_OPT_NOPSNFSS },

{ "pro$logues", MP_OPT_PROLOGUES },

{ "nopro$logues", MP_OPT_NOPROLOGUES },

{ "ma$gnification", MP_OPT_MAGNIFICATION },

{ "fo$nt", MP_OPT_FONT },

{ NULL, MP_OPT_OTHER }

};

TERM_PUBLIC void

MP_options()

{

struct value a;

/* Annoying hack to handle the case of 'set termoption' after */

/* we have already initialized the terminal. */

if (!almost_equals(c_token-1, "termopt$ion")) {

MP_color = FALSE;

MP_solid = FALSE;

MP_tex = MP_TEX;

MP_a4paper = 0;

MP_amstex = 0;

MP_psnfss = MP_PSNFSS_NONE;

MP_fontsize = 10.0;

MP_textmag = 1.0;

MP_prologues = -1;

strcpy(MP_fontname, "cmr10");

term->flags |= TERM_IS_LATEX;

}

while (!END_OF_COMMAND) {

int option = lookup_table(&MP_opts[0], c_token);

switch (option) {

case MP_OPT_MONOCHROME:

MP_color = FALSE;

c_token++;

break;

case MP_OPT_COLOUR:

MP_color = TRUE;

c_token++;

break;

case MP_OPT_SOLID:

MP_solid = TRUE;

c_token++;

break;

case MP_OPT_DASHED:

MP_solid = FALSE;

c_token++;

break;

case MP_OPT_NOTEX:

MP_tex = MP_NO_TEX;

strcpy(MP_fontname, "pcrr8r");

term->flags &= ~TERM_IS_LATEX;

c_token++;

break;

case MP_OPT_TEX:

MP_tex = MP_TEX;

c_token++;

break;

case MP_OPT_LATEX:

MP_tex = MP_LATEX;

c_token++;

break;

case MP_OPT_AMSTEX:

MP_tex = MP_LATEX; /* only makes sense when using LaTeX */

MP_amstex = 1;

c_token++;

break;

case MP_OPT_A4PAPER:

MP_tex = MP_LATEX; /* only makes sense when using LaTeX */

MP_a4paper = 1;

c_token++;

break;

case MP_OPT_PSNFSS:

MP_tex = MP_LATEX; /* only makes sense when using LaTeX */

MP_psnfss = MP_PSNFSS_8;

c_token++;

break;

case MP_OPT_PSNFSS_V7:

MP_tex = MP_LATEX; /* only makes sense when using LaTeX */

MP_psnfss = MP_PSNFSS_7;

c_token++;

break;

case MP_OPT_NOPSNFSS:

MP_psnfss = MP_PSNFSS_NONE;

c_token++;

break;

case MP_OPT_PROLOGUES:

c_token++;

if (!(END_OF_COMMAND)) {

int dummy_for_prologues;

if (sscanf(gp_input_line + token[c_token].start_index,

"%d", &dummy_for_prologues) == 1) {

MP_prologues = dummy_for_prologues;

}

c_token++;

}

break;

case MP_OPT_NOPROLOGUES:

MP_prologues = -1;

c_token++;

break;

case MP_OPT_MAGNIFICATION:

c_token++;

if (!END_OF_COMMAND) /* global text scaling */

MP_textmag = (double) real(const_express(&a));

/* c_token++; */ /* Needed ??? */

break;

case MP_OPT_FONT:

c_token++;

case MP_OPT_OTHER:

default:

{

char *s;

if ((s = try_to_get_string())) {

int sep = strcspn(s,",");

if (sep > 0) {

strncpy(MP_fontname, s, sizeof(MP_fontname));

MP_fontname[sep] = '\0';

}

if (s[sep] == ',')

sscanf(&s[sep+1],"%lf",&MP_fontsize);

free(s);

} else if (option == MP_OPT_FONT) {

int_error(c_token,"expecting font name");

} else if (!END_OF_COMMAND) { /*font size */

MP_fontsize = (double) real(const_express(&a));

c_token++;

}

break;

}

/* minimal error recovery: */

if (MP_fontsize < 5.0)

MP_fontsize = 5.0;

if (MP_fontsize > 99.99)

MP_fontsize = 99.99;

term->v_char = (unsigned int) (MP_DPI * MP_fontsize * MP_textmag * 11 / 720);

if (MP_tex == MP_NO_TEX) { /* Courier is a little wider than cmtt */

term->h_char = (unsigned int) (MP_DPI * MP_fontsize * MP_textmag * 6.0 / 720 + 0.5);

} else {

term->h_char = (unsigned int) (MP_DPI * MP_fontsize * MP_textmag * 5.3 / 720 + 0.5);

}

if (MP_psnfss == MP_PSNFSS_NONE) { /* using the normal font scheme */

sprintf(term_options,

"%s %s %stex%s%s mag %.3f font \"%s,%.2f\" %sprologues(%d)",

MP_color ? "color" : "monochrome",

MP_solid ? "solid" : "dashed",

(MP_tex == MP_NO_TEX) ? "no" : (MP_tex == MP_LATEX) ? "la" : "",

MP_a4paper ? " a4paper" : "",

MP_amstex ? " amstex" : "",

MP_textmag,

MP_fontname, MP_fontsize,

(MP_prologues > -1) ? "" : "no", MP_prologues );

} else { /* using postscript fonts */

sprintf(term_options,

"%s %s %stex%s%s mag %.3f %s %sprologues(%d)",

MP_color ? "color" : "monochrome",

MP_solid ? "solid" : "dashed",

(MP_tex == MP_NO_TEX) ? "no" : (MP_tex == MP_LATEX) ? "la" : "",

MP_a4paper ? " a4paper" : "",

MP_amstex ? " amstex" : "",

MP_textmag,

(MP_psnfss == MP_PSNFSS_7) ? "psnsfss(v7)" : "psnsfss",

(MP_prologues > -1) ? "" : "no", MP_prologues );

};

}

TERM_PUBLIC void

MP_init()

{

time_t now;

time(&now);

MP_posx = MP_posy = 0;

fprintf(gpoutfile, "%%GNUPLOT Metapost output: %s\n", asctime(localtime(&now)));

if (MP_prologues > -1) {

fprintf(gpoutfile, "prologues:=%d;\n", MP_prologues);

}

if (MP_tex == MP_LATEX) {

fputs("\n\

%% Add \\documentclass and \\begin{dcoument} for latex\n\

%% NB you should set the environment variable TEX to the name of your\n\

%% latex executable (normally latex) inorder for metapost to work\n\

%% or run\n\

%% mpost --tex=latex ...\n\

\n\

% BEGPRE\n\

verbatimtex\n", gpoutfile);

if (MP_a4paper) {

fputs("\\documentclass[a4paper]{article}\n", gpoutfile);

} else {

fputs("\\documentclass{article}\n", gpoutfile);

}

switch (MP_psnfss) {

case MP_PSNFSS_7:{

fputs("\\usepackage[latin1]{inputenc}\n\

\\usepackage[T1]{fontenc}\n\

\\usepackage{times,mathptmx}\n\

\\usepackage{helvet}\n\

\\usepackage{courier}\n", gpoutfile);

}

break;

case MP_PSNFSS_8:{

fputs("\\usepackage[latin1]{inputenc}\n\

\\usepackage[T1]{fontenc}\n\

\\usepackage{textcomp}\n\

\\usepackage{mathptmx}\n\

\\usepackage[scaled=.92]{helvet}\n\

\\usepackage{courier}\n\

\\usepackage{latexsym}\n", gpoutfile);

}

break;

}

if (MP_amstex) {

fputs("\\usepackage[intlimits]{amsmath}\n\

\\usepackage{amsfonts}\n", gpoutfile);

};

fputs("\\begin{document}\n\

etex\n% ENDPRE\n", gpoutfile);

}

fputs("\n\

warningcheck:=0;\n\

defaultmpt:=mpt:=4;\n\

th:=.6;\n\

%% Have nice sharp joins on our lines\n\

linecap:=butt;\n\

linejoin:=mitered;\n\

\n\

def scalepen expr n = pickup pencircle scaled (n*th) enddef;\n\

def ptsize expr n = mpt:=n*defaultmpt enddef;\n\

\n", gpoutfile);

fprintf(gpoutfile, "\ntextmag:=%6.3f;\n", MP_textmag);

fputs("\

vardef makepic(expr str) =\n\

if picture str : str scaled textmag\n\

% otherwise a string\n\

else: str infont defaultfont scaled (defaultscale*textmag)\n\

fi\n\

enddef;\n\

\n\

def infontsize(expr str, size) =\n\

infont str scaled (size / fontsize str)\n\

enddef;\n", gpoutfile);

if (MP_tex == MP_NO_TEX) {

fprintf(gpoutfile, "\n\

defaultfont:= \"%s\";\n\

defaultscale := %6.3f/fontsize defaultfont;\n", MP_fontname, MP_fontsize);

} else {

if (MP_tex != MP_LATEX) {

fputs("\n\

%font changes\n\

verbatimtex\n\

\\def\\setfont#1#2{%.\n\

\\font\\gpfont=#1 at #2pt\n\

\\gpfont}\n", gpoutfile);

fprintf(gpoutfile, "\\setfont{%s}{%5.2f}\netex\n",

MP_fontname, MP_fontsize);

}

fputs("\n\

color currentcolor; currentcolor:=black;\n\

picture currentdash; currentdash:=dashpattern(on 1);\n\

color fillcolor;\n\

boolean colorlines,dashedlines;\n", gpoutfile);

if (MP_color) {

fputs("colorlines:=true;\n", gpoutfile);

} else {

fputs("colorlines:=false;\n", gpoutfile);

}

if (MP_solid) {

fputs("dashedlines:=false;\n", gpoutfile);

} else {

fputs("dashedlines:=true;\n", gpoutfile);

}

fputs("\n\

def _wc = withpen currentpen withcolor currentcolor dashed currentdash enddef;\n\

def _ac = addto currentpicture enddef;\n\

def _sms = scaled mpt shifted enddef;\n\

% drawing point-types\n\

def gpdraw (expr n, x, y) =\n\

if n<0: _ac contour fullcircle _sms (x,y)\n\

elseif (n=1) or (n=3):\n\

_ac doublepath ptpath[n] _sms (x,y) _wc;\n\

_ac doublepath ptpath[n] rotated 90 _sms (x,y) _wc\n\

elseif n<6: _ac doublepath ptpath[n] _sms (x,y) _wc\n\

else: _ac contour ptpath[n] _sms (x,y) _wc\n\

fi\n\

enddef;\n\

\n\

% the point shapes\n\

path ptpath[];\n\

%diamond\n\

ptpath0 = ptpath6 = (-1/2,0)--(0,-1/2)--(1/2,0)--(0,1/2)--cycle;\n\

% plus sign\n\

ptpath1 = (-1/2,0)--(1/2,0);\n\

% square\n\

ptpath2 = ptpath7 = (-1/2,-1/2)--(1/2,-1/2)--(1/2,1/2)--(-1/2,1/2)--cycle;\n\

% cross\n\

ptpath3 := (-1/2,-1/2)--(1/2,1/2);\n\

% circle:\n\

ptpath4 = ptpath8:= fullcircle;\n\

% triangle\n\

ptpath5 = ptpath9 := (0,1/2)--(-1/2,-1/2)--(1/2,-1/2)--cycle;\n\

\n\

def linetype expr n =\n\

currentcolor:= if colorlines : col[n] else: black fi;\n\

currentdash:= if dashedlines : lt[n] else: dashpattern(on 1) fi;\n\

if n = -1 :\n\

drawoptions(withcolor currentcolor withpen (currentpen scaled .5));\n\

else :\n\

drawoptions(_wc);\n\

fi\n\

enddef;\n\

\n\

% dash patterns\n\

picture lt[];\n\

lt[-2]:=lt[-1]:=lt0:=dashpattern(on 1);\n\

lt1=dashpattern(on 2 off 2); % dashes\n\

lt2=dashpattern(on 2 off 2 on 0.2 off 2); %dash-dot\n\

lt3=lt1 scaled 1.414;\n\

lt4=lt2 scaled 1.414;\n\

lt5=lt1 scaled 2;\n\

lt6:=lt2 scaled 2;\n\

lt7=dashpattern(on 0.2 off 2); %dots\n\

\n\

color col[],cyan, magenta, yellow;\n\

cyan=blue+green; magenta=red+blue;yellow=green+red;\n\

col[-2]:=col[-1]:=col0:=black;\n\

col1:=red;\n\

col2:=(.2,.2,1); %blue\n\

col3:=(1,.66,0); %orange\n\

col4:=.85*green;\n\

col5:=.9*magenta;\n\

col6:=0.85*cyan;\n\

col7:=.85*yellow;\n\

\n\

%placing text\n\

picture GPtext;\n\

def put_text(expr pic, x, y, r, j) =\n\

GPtext:=makepic(pic);\n\

GPtext:=GPtext shifted\n\

if j = 1: (-(ulcorner GPtext + llcorner GPtext)/2)\n\

elseif j = 2: (-center GPtext)\n\

else: (-(urcorner GPtext + lrcorner GPtext)/2)\n\

fi\n\

rotated r;\n\

addto currentpicture also GPtext shifted (x,y)\n\

enddef;\n", gpoutfile);

}

TERM_PUBLIC void

MP_graphics()

{

/* initialize "remembered" drawing parameters */

MP_oldline = -2;

MP_oldpen = 1.0;

MP_oldptsize = pointsize;

fprintf(gpoutfile, "\nbeginfig(%d);\nw:=%.3fin;h:=%.3fin;\n",

MP_char_code, MP_xsize, MP_ysize);

/* MetaPost can only handle numbers up to 4096. When MP_DPI

* is larger than 819, this is exceeded by (term->xmax). So we

* scale it and all coordinates down by factor of 10.0. And

* compensate by scaling a and b up.

fprintf(gpoutfile, "a:=w/%.1f;b:=h/%.1f;\n",

(term->xmax) / 10.0, (term->ymax) / 10.0);

fprintf(gpoutfile, "scalepen 1; ptsize %.3f;linetype -2;\n", pointsize);

MP_char_code++;

/* reset MP_color_changed */

MP_color_changed = 0;

MP_dash_changed = 0;

}

TERM_PUBLIC void

MP_text()

{

if (MP_inline)

MP_endline();

fputs("endfig;\n", gpoutfile);

}

TERM_PUBLIC void

MP_linetype(int lt)

{

int linetype = lt;

if (linetype >= MP_LINE_TYPES)

linetype %= MP_LINE_TYPES;

if (MP_inline)

MP_endline();

/* reset the color in case it has been changed in MP_set_color() */

if ((MP_color_changed) || (MP_dash_changed)) {

MP_oldline = linetype + 1;

MP_color_changed = 0;

MP_dash_changed = 0;

}

if (MP_oldline != linetype) {

fprintf(gpoutfile, "linetype %d;\n", linetype);

MP_oldline = linetype;

}

TERM_PUBLIC void

MP_move(unsigned int x, unsigned int y)

{

if ((x != MP_posx) || (y != MP_posy)) {

if (MP_inline)

MP_endline();

MP_posx = x;

MP_posy = y;

} /* else we seem to be there already */

}

TERM_PUBLIC void

MP_point(unsigned int x, unsigned int y, int pt)

{

int pointtype = pt;

if (MP_inline)

MP_endline();

/* Print the shape defined by 'number'; number < 0 means

to use a dot, otherwise one of the defined points. */

if (pointtype >= MP_POINT_TYPES)

pointtype %= MP_POINT_TYPES;

/* Change %d to %f, divide x,y by 10 */

fprintf(gpoutfile, "gpdraw(%d,%.1fa,%.1fb);\n", pointtype, x / 10.0, y / 10.0);

}

TERM_PUBLIC void

MP_pointsize(double ps)

{

if (ps < 0)

ps = 1;

if (MP_oldptsize != ps) {

if (MP_inline)

MP_endline();

fprintf(gpoutfile, "ptsize %.3f;\n", ps);

MP_oldptsize = ps;

}

TERM_PUBLIC void

MP_linewidth(double lw)

{

if (MP_oldpen != lw) {

if (MP_inline)

MP_endline();

fprintf(gpoutfile, "scalepen %.3f;\n", lw);

MP_oldpen = lw;

}

TERM_PUBLIC void

MP_vector(unsigned int ux, unsigned int uy)

{

if ((ux == MP_posx) && (uy == MP_posy))

return; /* Zero length line */

if (MP_inline) {

if (MP_linecount++ >= MP_LINEMAX) {

fputs("\n", gpoutfile);

MP_linecount = 1;

}

} else {

MP_inline = TRUE;

fprintf(gpoutfile, "draw (%.1fa,%.1fb)", MP_posx / 10.0, MP_posy / 10.0);

MP_linecount = 2;

}

MP_posx = ux;

MP_posy = uy;

fprintf(gpoutfile, "--(%.1fa,%.1fb)", MP_posx / 10.0, MP_posy / 10.0);

}

static void

MP_endline()

{

MP_inline = FALSE;

fprintf(gpoutfile, ";\n");

}

TERM_PUBLIC void

MP_arrow(unsigned int sx, unsigned int sy, unsigned int ex, unsigned int ey, int head)

{

MP_move(sx, sy);

if (head) {

fprintf(gpoutfile, "%s (%.1fa,%.1fb)--(%.1fa,%.1fb);\n",

head == 1 ? "drawarrow" : "drawdblarrow",

sx / 10.0, sy / 10.0, ex / 10.0, ey / 10.0);

} else if ((sx != ex) || (sy != ey)) {

fprintf(gpoutfile, "draw (%.1fa,%.1fb)--(%.1fa,%.1fb);\n",

sx / 10.0, sy / 10.0, ex / 10.0, ey / 10.0);

} /* else: arrow with no length and no head = sound of one hand clapping? */

MP_posx = ex;

MP_posy = ey;

}

TERM_PUBLIC void

MP_put_text(unsigned int x, unsigned int y, const char str[])

{

int i, j = 0;

char *text;

/* ignore empty strings */

if (!str || !*str)

return;

text = gp_strdup(str);

if (MP_inline)

MP_endline();

switch (MP_justify) {

case LEFT:

j = 1;

break;

case CENTRE:

j = 2;

break;

case RIGHT:

j = 3;

break;

}

if (MP_tex == MP_NO_TEX) {

for (i = 0; i < strlen(text); i++)

if (text[i] == '"')

text[i] = '\''; /* Replace " with ' */

if (MP_fontchanged) {

fprintf(gpoutfile, "\

put_text(\"%s\" infontsize(\"%s\",%5.2f), %.1fa, %.1fb, %d, %d);\n",

text, MP_fontname, MP_fontsize,

x / 10.0, y / 10.0, MP_ang, j);

} else {

fprintf(gpoutfile, "put_text(\"%s\", %.1fa, %.1fb, %d, %d);\n",

text, x / 10.0, y / 10.0, MP_ang, j);

}

} else if (MP_fontchanged) {

if (MP_tex != MP_LATEX) {

fprintf(gpoutfile, "\

put_text( btex \\setfont{%s}{%5.2f} %s etex, %.1fa, %.1fb, %d, %d);\n",

MP_fontname, MP_fontsize, text,

x / 10.0, y / 10.0, MP_ang, j);

} else {

fprintf(gpoutfile, "put_text( btex %s etex, %.1fa, %.1fb, %d, %d);\n",

text, x / 10.0, y / 10.0, MP_ang, j);

}

} else {

fprintf(gpoutfile, "put_text( btex %s etex, %.1fa, %.1fb, %d, %d);\n",

text, x / 10.0, y / 10.0, MP_ang, j);

}

free(text);

}

TERM_PUBLIC int

MP_justify_text(enum JUSTIFY mode)

{

MP_justify = mode;

return (TRUE);

}

TERM_PUBLIC int

MP_text_angle(int ang)

{

/* Metapost code does the conversion */

MP_ang = ang;

return (TRUE);

}

TERM_PUBLIC int

MP_set_font(const char *font)

{

if (*font) {

size_t sep = strcspn(font, ",");

if (sep < sizeof(MP_fontname))

strncpy(MP_fontname, font, sizeof(MP_fontname));

sscanf(&(font[sep + 1]), "%lf", &MP_fontsize);

if (MP_fontsize < 5)

MP_fontsize = 5.0;

if (MP_fontsize >= 100)

MP_fontsize = 99.99;

/* */

MP_fontchanged = TRUE;

} else {

MP_fontchanged = FALSE;

}

return TRUE;

}

TERM_PUBLIC void

MP_reset()

{

if (MP_tex == MP_LATEX) {

fputs("% BEGPOST\n",gpoutfile);

fputs("verbatimtex\n",gpoutfile);

fputs(" \\end{document}\n",gpoutfile);

fputs("etex\n",gpoutfile);

fputs("% ENDPOST\n",gpoutfile);

};

fputs("end.\n", gpoutfile);

}

TERM_PUBLIC void

MP_boxfill(

int style,

unsigned int x1, unsigned int y1,

unsigned int wd, unsigned int ht)

{

/* fillpar:

* - solid : 0 - 100% intensity

* - pattern : 0 - n pattern number

int fillpar = style >> 4;

style &= 0xf;

if (MP_inline)

MP_endline();

switch (style) {

case FS_EMPTY: /* fill with background color */

fprintf(gpoutfile, "\

fill (%.1fa,%.1fb)--(%.1fa,%.1fb)--(%.1fa,%.1fb)--(%.1fa,%.1fb)--cycle withcolor background;\n",

x1 / 10.0, y1 / 10.0, (x1 + wd) / 10.0, y1 / 10.0,

(x1 + wd) / 10.0, (y1 + ht) / 10.0, x1 / 10.0,

(y1 + ht) / 10.0);

break;

case FS_PATTERN: /* pattern fill */

case FS_TRANSPARENT_PATTERN:

/* FIXME: not yet implemented, dummy it up as fill density */

fillpar *= 12;

default:

case FS_SOLID: /* solid fill */

case FS_TRANSPARENT_SOLID:

if (fillpar < 100) {

double density = (100-fillpar) * 0.01;

fprintf(gpoutfile,"fillcolor:=currentcolor*%.2f+background*%.2f;\n",

1.0-density, density);

MP_color_changed = 1;

} else

fprintf(gpoutfile,"fillcolor:=currentcolor;\n");

fprintf(gpoutfile, "\

fill (%.1fa,%.1fb)--(%.1fa,%.1fb)--(%.1fa,%.1fb)--(%.1fa,%.1fb)--cycle withpen (pencircle scaled 0pt) withcolor fillcolor;\n",

x1 / 10.0, y1 / 10.0, (x1 + wd) / 10.0, y1 / 10.0,

(x1 + wd) / 10.0, (y1 + ht) / 10.0, x1 / 10.0,

(y1 + ht) / 10.0);

break;

}

TERM_PUBLIC int

MP_make_palette(t_sm_palette *palette)

{

/* metapost can do continuous number of colours */

return 0;

}

TERM_PUBLIC void

MP_set_color(t_colorspec *colorspec)

{

double gray = colorspec->value;

rgb_color color;

/* remeber that we changed the color, needed to reset color in MP_linetype()*/

MP_color_changed = 1;

if (MP_inline)

MP_endline();

if (!MP_color) { /* gray mode */

if (gray < 1e-3) gray = 0;

fprintf(gpoutfile, "currentcolor:=%.3gwhite;\n", gray);

} else { /* color mode */

if (colorspec->type == TC_LT) {

int linecolor = colorspec->lt;

if (linecolor >= MP_LINE_TYPES)

linecolor %= MP_LINE_TYPES;

if (linecolor == -1)

fprintf(gpoutfile, "currentcolor:=black;\n");

else if (linecolor >= 0)

fprintf(gpoutfile, "currentcolor:=col%d;\n",linecolor);

}

if (colorspec->type == TC_FRAC) {

if (sm_palette.colors != 0) /* finite nb of colors explicitly requested */

gray = (gray >= ((double)(sm_palette.colors-1)) / sm_palette.colors) ?

1 : floor(gray * sm_palette.colors) / sm_palette.colors;

rgb1_from_gray( gray, &color );

} else if (colorspec->type == TC_RGB) {

color.r = (double)((colorspec->lt >> 16 ) & 255) / 255.;

color.g = (double)((colorspec->lt >> 8 ) & 255) / 255.;

color.b = (double)(colorspec->lt & 255) / 255.;

} else

return;

if (color.r < 1e-4) color.r = 0;

if (color.g < 1e-4) color.g = 0;

if (color.b < 1e-4) color.b = 0;

fprintf(gpoutfile, "currentcolor:=%.4g*red+%.4g*green+%.4g*blue;\n",

color.r, color.g, color.b);

}

return;

}

TERM_PUBLIC void

MP_filled_polygon(int points, gpiPoint *corners)

{

int i;

int fillpar = corners->style >> 4;

int style = corners->style & 0xf;

if (MP_inline)

MP_endline();

switch (style) {

case FS_EMPTY: /* fill with background color */

fprintf(gpoutfile,"fillcolor:=background;\n");

break;

case FS_PATTERN: /* pattern fill implemented as partial density */

case FS_TRANSPARENT_PATTERN:

fillpar *= 12;

case FS_SOLID: /* solid fill */

case FS_TRANSPARENT_SOLID:

if (fillpar < 100) {

double density = (100-fillpar) * 0.01;

fprintf(gpoutfile,"fillcolor:=currentcolor*%.2f+background*%.2f;\n",

1.0-density, density);

} else {

fprintf(gpoutfile,"fillcolor:=currentcolor;\n");

}

default:

break;

}

fprintf(gpoutfile, "fill ");

for (i = 0; i < points; i++)

fprintf(gpoutfile, "(%.1fa,%.1fb)%s",

corners[i].x / 10.0, corners[i].y / 10.0,

(i < points - 1 && (i + 1) % MP_LINEMAX == 0) ? "\n--" : "--");

fprintf(gpoutfile, "cycle withcolor fillcolor;\n");

}

TERM_PUBLIC void

MP_dashtype (int type, t_dashtype *custom_dash_type)

{

switch (type) {

case DASHTYPE_SOLID:

fprintf(gpoutfile, "%%MP_dashtype%% DASHTYPE_SOLID\n");

break;

case DASHTYPE_AXIS:

fprintf(gpoutfile, "%%MP_dashtype%% DASHTYPE_AXIS\n");

/* Currently handled elsewhere? */

break;

case DASHTYPE_CUSTOM:

fprintf(gpoutfile, "%%MP_dashtype%% DASHTYPE_CUSTOM: ");

if (custom_dash_type) {

int i;

if (custom_dash_type->dstring[0] != '\0')

fprintf(gpoutfile, "\"%s\"; ", custom_dash_type->dstring);

fprintf(gpoutfile, "[");

for (i = 0; i < DASHPATTERN_LENGTH && custom_dash_type->pattern[i] > 0; i++)

fprintf(gpoutfile, i ? ", %.2f" : "%.2f", custom_dash_type->pattern[i]);

fprintf(gpoutfile, "]");

fprintf(gpoutfile, "\n");

MP_dash_changed = 1;

fprintf(gpoutfile, "currentdash:=dashpattern(");

for (i = 0; i < DASHPATTERN_LENGTH && custom_dash_type->pattern[i] > 0; i++)

fprintf(gpoutfile, "%s %.2f ", i%2?"off":"on", custom_dash_type->pattern[i]);

fprintf(gpoutfile, ");\n");

} else {

fprintf(gpoutfile, "\n");

}

break;

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gnuplot-old/term/metapost.trm at master · gnuplot/gnuplot-old · GitHub

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