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- /*
- * $Id: fig.trm%v 3.50 1993/07/09 05:35:24 woo Exp $
- */
-
- /* GNUPLOT - fig.trm */
- /*
- * Copyright (C) 1990, 1991, 1992
- *
- * 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:
- * Fig graphics language
- *
- * AUTHORS
- * Micah Beck, David Kotz
- *
- * send your comments or suggestions to (info-gnuplot@dartmouth.edu).
- *
- */
-
- #ifdef MSDOS
- #define long int
- #endif /* MSDOS */
-
- /*
- * Original for Fig code output by Micah Beck, 1989
- * Department of Computer Science, Cornell University
- * Updated by David Kotz for gnuplot 2.0
- * More efficient output by Ian Dall
- * Updated to FIG 2.1 (with color) format by Vivek Khera
- */
- #include "object.h" /* from the XFig distribution */
- #define FIG_DEFAULT DEFAULT
- #define FIG_ROMAN_FONT (0) /* actually, the default font */
-
- #ifndef FIG_RES
- /* Must be 80 for the Fig editor, but may be increased if used
- * only by TransFig filters.
- * Represents pixels per inch.
- */
- #define FIG_RES (80)
- #endif
-
- #define FIG_COORD_SYS 2
-
- #define FIG_MAGIC "#FIG 2.1"
- #define FIG_HTIC (5*FIG_RES/80)
- #define FIG_VTIC (5*FIG_RES/80)
- #define FIG_FONT_S (10) /* size in points */
- #define FIG_VCHAR (FIG_FONT_S*72/FIG_RES) /* height of font in pixels */
- #define FIG_HCHAR (FIG_VCHAR*6/10) /* this is a guess at the width */
- #define FIG_ARROW_WIDTH (FIG_HTIC/2 + 1)
- #define FIG_ARROW_HEIGHT FIG_HTIC
-
- static long FIG_xbase = FIG_RES/2;
- static long FIG_ybase = FIG_RES/2;
-
- static long FIG_posx;
- static long FIG_posy;
- static int FIG_poly_vec_cnt;
- enum FIG_poly_stat {FIG_poly_new, FIG_poly_part};
- static enum FIG_poly_stat FIG_polyvec_stat;
- /* 5 inches wide by 3 inches high */
- #define FIG_XMAX (5 * FIG_RES)
- #define FIG_YMAX (3 * FIG_RES)
-
- #define FIG_XOFF (FIG_RES/4)
- #define FIG_YOFF (FIG_RES/4)
-
- static int FIG_type; /* negative types use real lines */
- static float FIG_spacing; /* length of dash or dot spacing */
- static int FIG_justify; /* Fig justification T_*_JUSTIFIED */
- static float FIG_angle; /* Fig text angle 0=horiz, Pi/2=vert */
- static int FIG_use_color = FALSE; /* do we use color or not? */
- static int FIG_color = DEFAULT; /* which color to use */
-
- #define FIG_POINT_TYPES POINT_TYPES /* we use the same points */
-
- static
- FIG_poly_clean(stat)
- enum FIG_poly_stat stat;
- {
- if(stat == FIG_poly_part)
- fprintf(outfile, " 9999 9999\n");
- FIG_polyvec_stat = FIG_poly_new;
- }
-
- FIG_options()
- {
- FIG_use_color = FALSE; /* assumption */
-
- if (!END_OF_COMMAND) {
- if (almost_equals(c_token,"m$onochrome")) {
- FIG_use_color=FALSE;
- c_token++;
- }
- else if (almost_equals(c_token,"c$olor")) {
- FIG_use_color=TRUE;
- c_token++;
- }
- }
-
- sprintf(term_options,"%s", FIG_use_color ? "color" : "monochrome");
- }
-
- FIG_init()
- {
- FIG_posx = FIG_posy = 0;
- FIG_polyvec_stat = FIG_poly_new;
- FIG_linetype(-1);
- FIG_justify_text(LEFT);
- FIG_text_angle(0);
-
- fprintf(outfile, "%s\n", FIG_MAGIC);
- fprintf(outfile, "%d %d\n", FIG_RES, FIG_COORD_SYS);
- }
-
-
- FIG_graphics()
- {
- FIG_posx = FIG_posy = 0;
- FIG_polyvec_stat = FIG_poly_new;
- /* there is no way to have separate pictures in a FIG file */
- }
-
-
- FIG_text()
- {
- /* there is no way to have separate pictures in a FIG file */
- FIG_poly_clean(FIG_polyvec_stat);
- FIG_posx = FIG_posy = 0;
- fflush(outfile);
- }
-
-
- /* Line types for FIG work like this:
- * for monochrome:
- * -2 : solid (border)
- * -1 : dotted 4 (axes)
- * 0 : solid (first curve)
- * 1 : dotted 3
- * 2 : dashed 3
- * 3 : dotted 6
- * 4 : dashed 6
- * ... ...
- * for color, cycle through colors. once colors are used up, repeat colors
- * but start using dashed lines of different dash length. don't use white
- * as a color.
- */
-
- FIG_linetype(linetype)
- int linetype; /* expect linetype >= -2 */
- {
- int last_FIG_type = FIG_type;
- int last_FIG_spacing = FIG_spacing;
- switch (linetype) {
- case 0:
- case -2: {
- FIG_type = SOLID_LINE;
- FIG_spacing = 0.0;
- if (FIG_use_color) FIG_color = BLACK;
- break;
- }
- case -1: {
- FIG_type = DOTTED_LINE;
- FIG_spacing = 4.0; /* gap */
- if (FIG_use_color) FIG_color = BLACK;
- break;
- }
- default: {
- linetype = abs(linetype); /* shouldn't be negative anyway */
- /* now linetype >= 1 */
- if (FIG_use_color) {
- FIG_type = (linetype >= WHITE); /* dashed line */
- FIG_color = linetype % WHITE;
- FIG_spacing = (linetype / WHITE) * 3;
- } else { /* monochrome */
- FIG_type = linetype % 2 + 1; /* dotted, dashed, ... */
- FIG_spacing = (linetype+1) / 2 * 3;
- }
- break;
- }
- }
- if (FIG_type != last_FIG_type || FIG_spacing != last_FIG_spacing)
- FIG_poly_clean(FIG_polyvec_stat);
- }
-
- FIG_move(x,y)
- unsigned int x,y;
- {
- int last_FIG_posx = FIG_posx;
- int last_FIG_posy = FIG_posy;
- FIG_posx = x;
- FIG_posy = y;
- if (FIG_posx != last_FIG_posx || FIG_posy != last_FIG_posy)
- FIG_poly_clean(FIG_polyvec_stat);
- }
-
-
- FIG_vector(ux,uy)
- unsigned int ux,uy;
- {
- int x=ux, y=uy;
-
- if (FIG_polyvec_stat != FIG_poly_part)
- {
- fprintf(outfile, "%d %d %d %d %d %d %d %d %6.3f %d %d %d\n",
- O_POLYLINE, T_POLYLINE,
- FIG_type, 1, FIG_color, 0, FIG_DEFAULT, 0, FIG_spacing, 0,0,0);
- fprintf(outfile, "%d %d",
- FIG_XOFF + FIG_posx, FIG_YMAX + FIG_YOFF - FIG_posy);
- FIG_poly_vec_cnt = 1;
- FIG_polyvec_stat = FIG_poly_part;
- }
- fprintf(outfile, " %d %d",
- FIG_XOFF + x, FIG_YMAX + FIG_YOFF-y);
- FIG_poly_vec_cnt++;
- if (FIG_poly_vec_cnt > 50)
- FIG_poly_clean(FIG_polyvec_stat);
-
- FIG_posx = x;
- FIG_posy = y;
- }
-
-
- FIG_arrow(sx, sy, ex, ey, head)
- int sx, sy; /* start coord */
- int ex, ey; /* end coord */
- TBOOLEAN head;
- {
- FIG_poly_clean(FIG_polyvec_stat);
- fprintf(outfile, "%d %d %d %d %d %d %d %d %6.3f %d %d %d\n",
- O_POLYLINE, T_POLYLINE,
- FIG_type, 1, FIG_color, 0, FIG_DEFAULT, 0, FIG_spacing,
- 0, head ? 1 : 0, 0);
- /* arrow line */
- if ( head )
- fprintf(outfile, "%d %d %.3f %.3f %.3f\n",
- 0, 0, 1.0,
- (double)FIG_ARROW_WIDTH, (double)FIG_ARROW_HEIGHT);
- fprintf(outfile, "%d %d %d %d 9999 9999\n",
- FIG_XOFF + sx, FIG_YOFF + FIG_YMAX - sy,
- FIG_XOFF + ex, FIG_YOFF + FIG_YMAX - ey);
-
- FIG_posx = ex;
- FIG_posy = ey;
- }
-
-
- FIG_put_text(x, y, str)
- int x, y;
- char *str;
- {
- if (strlen(str) == 0) return;
- FIG_poly_clean(FIG_polyvec_stat);
- y -= FIG_VCHAR/2; /* assuming vertical center justified */
-
- fprintf(outfile, "%d %d %d %d %d %d %d %6.3f %d %d %d %d %d %s\01\n",
- O_TEXT, FIG_justify,
- FIG_ROMAN_FONT, FIG_FONT_S, FIG_DEFAULT, FIG_DEFAULT, 0,
- FIG_angle, SPECIAL_TEXT, FIG_VCHAR, FIG_HCHAR*strlen(str),
- FIG_XOFF + x, FIG_YMAX + FIG_YOFF-y, str);
- }
-
- int FIG_justify_text(mode)
- enum JUSTIFY mode;
- {
- switch(mode) {
- case LEFT: FIG_justify = T_LEFT_JUSTIFIED; break;
- case CENTRE: FIG_justify = T_CENTER_JUSTIFIED; break;
- case RIGHT: FIG_justify = T_RIGHT_JUSTIFIED; break;
- /* shouldn't happen */
- default: FIG_justify = T_LEFT_JUSTIFIED; return (FALSE); break;
- }
- return (TRUE);
- }
-
- int FIG_text_angle(angle)
- int angle;
- {
- if (angle)
- FIG_angle = Pi / 2.0; /* vertical is pi/2 radians */
- else
- FIG_angle = 0.0; /* horizontal */
- return (TRUE);
- }
-
- FIG_reset()
- {
- FIG_poly_clean(FIG_polyvec_stat);
- FIG_posx = FIG_posy = 0;
- fflush(outfile);
- }
-
- #ifdef MSDOS
- #undef long
- #endif /* MSDOS */
-