/* Hello, Emacs, this is -*-C-*- */
/* GNUPLOT - fig.trm */
/*[
* Copyright 1990 - 1993, 1998, 2004
*
* 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.
]*/
/*
* 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 (gnuplot-info@lists.sourceforge.net).
*
*/
/*
* 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
* Updated to FIG 3.1 (higher resolution) format by Ian MacPhedran, Jan 1995
* Updated to conform to newterm format Ian MacPhedran, Apr 1995
* Point-count option joachim.selinger@ins.uni-stuttgart.de (JFS) Feb 9 1996
* More options (portrait/landscape, metric/inches, size, fontsize, thickness)
* plus symbols and depth/thickness by bernlohr@eu1.mpi-hd.mpg.de (KB) Aug 15 1996
* Added PM3D functionality Ian MacPhedran, April 15 1999
* Take into account 'set palette maxcolors' Petr Mikulik, June 11 2002
* Don't reset options when 'set term fig ', Petr Mikulik, Aug 24 2002
* Ethan A Merritt - May 2008:
* Bring into line with other terminals for point types, size syntax, font spec
* Ethan A Merritt - Mar 2015:
* Load user-defined RGB linetype colors and gnuplot's set of named RGB colors
*
* Ethan A Merritt - April 2019: Update to conform with gnuplot version 5
*
* Revise handling of fig "depth" to base it on gnuplot layers front/back/etc
* __________________________
*
* 'behind items' 900
* grid 801
* 'back items' 800-701
* plots by number 700-204
* pm3d depthsort 203
* key box 202
* key titles 201
* 'front items' 200-101
* __________________________
*
* Revise dashtype handling to support gnuplot 5 dashtype property
* Remove obsolete terminal options (metric inches pointsmax depth dashed solid)
* Option selection and syntax now matches other terminals (except font names + flags)
*
* TODO
* - ditch custom point types > 50?
* - terminal option "dashlength"
*
* NOTES
* - Xfig 3.2.5 and earlier segfault on dashtype > 2
* Xfig 3.2.7 is OK. I don't know about 3.2.6
* - pointinterval and other styles that assume things are drawn in the
* order given do not work because fig depth runs backwards to that assumption
* - utf8 is not possible because Xfig is limited both by X11 and by PostScript
* - fractional linewidths are not possible
* - RGB colors can only be accessed if they are present in a defined linetype
* or match a named color or palette entry at the time of plotting.
* - nothing prevents out-of-range layers if there is a huge number of plots
*/
#include "driver.h"
#ifdef TERM_REGISTER
register_term(fig)
#endif /* TERM_REGISTER */
#ifdef TERM_PROTO
TERM_PUBLIC void FIG_options(void);
TERM_PUBLIC void FIG_init(void);
TERM_PUBLIC void FIG_graphics(void);
TERM_PUBLIC void FIG_text(void);
TERM_PUBLIC void FIG_linetype(int linetype);
TERM_PUBLIC void FIG_dashtype(int type, t_dashtype *custom_dash_pattern);
TERM_PUBLIC void FIG_move(unsigned int x, unsigned int y);
TERM_PUBLIC void FIG_vector(unsigned int ux, unsigned int uy);
TERM_PUBLIC void FIG_arrow(unsigned int sx, unsigned int sy, unsigned int ex, unsigned int ey, int head);
TERM_PUBLIC void FIG_put_text(unsigned int x, unsigned int y, const char *str);
TERM_PUBLIC int FIG_justify_text(enum JUSTIFY mode);
TERM_PUBLIC int FIG_text_angle(float ang);
TERM_PUBLIC void FIG_pointsize(double arg_pointsize);
TERM_PUBLIC void FIG_linewidth(double linewidth);
TERM_PUBLIC void FIG_reset(void);
TERM_PUBLIC void FIG_lpoint(unsigned int x, unsigned int y, int number);
TERM_PUBLIC void FIG_boxfill(int style, unsigned int x, unsigned int y, unsigned int w, unsigned int h);
TERM_PUBLIC int FIG_make_palette (t_sm_palette *);
TERM_PUBLIC void FIG_set_color (t_colorspec *);
TERM_PUBLIC void FIG_filled_polygon (int, gpiPoint *);
TERM_PUBLIC void FIG_layer(t_termlayer syncpoint);
#endif /* TERM_PROTO */
#ifndef TERM_PROTO_ONLY
#ifdef TERM_BODY
#include "fig_defs.h" /* modified version of object.h from XFig distribution */
#define FIG_BACKGROUND 7 /* FIXME: this is not guaranteed */
#define FIG_DEFAULT DEFAULT
#define FIG_ROMAN_FONT (0) /* actually, the default font */
static int FIG_gray_index = 68; /* just a guess */
static int FIG_plotno = 0;
/* These should not be defined elsewhere - ACZ */
/* This is now 1200 per inch */
#define FIG_IRES (1200)
#define FIG_COORD_SYS 2
#define FIG_ORIENT (FIG_portrait?"Portrait":"Landscape")
#define FIG_JUST "Center" /* Could be "Flush Left" */
#define FIG_PAPER (FIG_size_units == INCHES ? "Letter" : "A4")
#define FIG_MAGNIFICATION 100.0
#define FIG_MULTIPAGE "Single"
/* Could be "Multiple" */
#define FIG_TRANSCOLOR -2 /* none: -2; background: -1; 0..31: foreground colors */
#define FIG_XMAX 6000
#define FIG_YMAX 3600
#define FIG_HTIC ((5*FIG_IRES)/80)
#define FIG_VTIC ((5*FIG_IRES)/80)
#define FIG_VCHAR (FIG_FONT_S*FIG_IRES*0.75/72)
#define FIG_HCHAR (FIG_FONT_S*FIG_IRES*0.75*0.60/72)
#define FIG_FONT_S (10) /* size in points */
#define FIG_MAX_POINTS 99999L /* almost infinite ;-) */
/* Text flags (ULIG) */
enum FIG_TEXT_STYLEBITS {
FIG_TEXT_RIGID = 1> 16) & 0xff,
(colorval >> 8) & 0xff,
(colorval) & 0xff );
FIG_RGB_colors[ncolors] = colorval;
if (colorval == 0x7f7f7f)
FIG_gray_index = ncolors + FIG_rgb_color_offset;
ncolors++;
}
/* This leaves space in FIG_RGB_colors[] for a 128-entry color palette */
FIG_palette_offst = 32 + ncolors;
/* Need this here in case of multiplot, which will not reset plotno */
FIG_plotno = 0;
}
TERM_PUBLIC void
FIG_text()
{
/* there is no way to have separate pictures in a FIG file
* FIXME: The existence of a header keyword "multiple-page" suggests otherwise!
*/
FIG_poly_clean(FIG_polyvec_stat);
FIG_posx = FIG_posy = 0;
fflush(gpoutfile);
}
/* mapping of fig color codes to color sequence as in the postscript terminal */
#define npscolors 9
static int fig2pscolors[npscolors] = {
4 /*red*/, 2 /*green*/, 1 /*blue*/,
5 /*magenta*/, 3 /*cyan*/, 6 /*yellow*/,
0 /*black*/, 26 /*brown*/,
11 /*use LtBlue instead of light gray*/
};
TERM_PUBLIC void
FIG_linetype(int linetype)
{
int last_FIG_type = FIG_type;
int last_FIG_spacing = FIG_spacing;
int last_FIG_color = FIG_color;
int last_FIG_depth = FIG_linedepth;
int last_FIG_thickness = FIG_thickness;
FIG_thickness = FIG_current_linewidth * FIG_linewidth_factor;
FIG_color = DEFAULT;
if (linetype = npscolors); /* dashed line */
FIG_color = fig2pscolors[linetype % npscolors];
FIG_spacing = (linetype / npscolors) * 3;
} else { /* monochrome */
FIG_dashtype( linetype, NULL );
}
break;
} /* End switch */
if (FIG_type != last_FIG_type || FIG_spacing != last_FIG_spacing ||
FIG_color != last_FIG_color || FIG_linedepth != last_FIG_depth ||
FIG_thickness != last_FIG_thickness)
FIG_poly_clean(FIG_polyvec_stat);
}
TERM_PUBLIC void
FIG_dashtype(int type, t_dashtype *custom_dash_pattern)
{
double empirical_scale = 3.0;
(void) custom_dash_pattern; /* ignore */
if (type ymax + FIG_yoff - FIG_posy;
FIG_poly_vec_cnt = 1;
FIG_polyvec_stat = FIG_poly_part;
}
/* allocate memory for the next point */
FIG_points = (F_point *) gp_realloc(FIG_points, (FIG_poly_vec_cnt + 1) *
sizeof(F_point), "FIG_points"); /* JFS */
FIG_points[FIG_poly_vec_cnt].x = FIG_xoff + x;
FIG_points[FIG_poly_vec_cnt].y = term->ymax + FIG_yoff - y;
FIG_poly_vec_cnt++;
if (FIG_poly_vec_cnt > FIG_poly_vec_max)
FIG_poly_clean(FIG_polyvec_stat);
FIG_posx = x;
FIG_posy = y;
}
TERM_PUBLIC void
FIG_arrow(
unsigned int sx, unsigned int sy, /* start coord */
unsigned int ex, unsigned int ey, /* end coord */
int head)
{
int cap_style;
int arrow_depth = FIG_linedepth;
double awidth, aheight; /* arrow head sizes */
/* Adjust depth so that arrows are drawn after objects and labels */
if (FIG_current_layer != LAYER_PLOT)
arrow_depth -= 2;
FIG_poly_clean(FIG_polyvec_stat);
cap_style = (FIG_line.style==DOTTED_LINE)? CAP_ROUND : FIG_line.cap_style;
fprintf(gpoutfile, "%d %d %d %d %d %d %d %d %d %9.3f %d %d %d %d %d %d\n",
O_POLYLINE, FIG_line.type,
(FIG_type > 0) ? FIG_type : 0,
((head & HEADS_ONLY) || (FIG_type == LT_NODRAW)) ? 0 : FIG_thickness,
FIG_color, FIG_color, arrow_depth,
FIG_line.pen_style, FIG_line.fill_style, FIG_spacing,
FIG_line.join_style, cap_style, FIG_line.radius,
(head & END_HEAD) ? 1 : 0, (head & BACKHEAD) ? 1 : 0, 2);
/* arrow head(s) */
if (head) {
unsigned int headbackangleparameter = 0;
unsigned int headfillparameter = 0;
/* arrow head size */
if (curr_arrow_headlength == 0) {
awidth = (double) (term->h_tic / 2 + 1);
aheight = (double) term->h_tic;
} else {
awidth = (double) curr_arrow_headlength * 2*sin(curr_arrow_headangle*M_PI/180);
aheight = (double) curr_arrow_headlength * cos(curr_arrow_headangle*M_PI/180);
}
/* arrow head geometry */
if ( curr_arrow_headbackangle < 70 )
headbackangleparameter = 2;
else if ( curr_arrow_headbackangle > 110 )
headbackangleparameter = 3;
else
headbackangleparameter = 1;
if (curr_arrow_headfilled==2)
headfillparameter = 1;
else
headfillparameter = 0;
/* forward head */
if ((head & END_HEAD))
fprintf(gpoutfile, "%d %d %.3f %.3f %.3f\n",
headbackangleparameter, headfillparameter,
1.0, awidth, aheight);
/* backward head */
if ((head & BACKHEAD))
fprintf(gpoutfile, "%d %d %.3f %.3f %.3f\n",
headbackangleparameter, headfillparameter,
1.0, awidth, aheight);
}
/* arrow line */
fprintf(gpoutfile, "%d %d %d %d\n",
FIG_xoff + sx, FIG_yoff + term->ymax - sy,
FIG_yoff + ex, FIG_yoff + term->ymax - ey);
FIG_posx = ex;
FIG_posy = ey;
}
TERM_PUBLIC void
FIG_put_text(unsigned int x, unsigned int y, const char *str)
{
char *s1, *s2, *output_string;
int text_depth = FIG_linedepth;
if (strlen(str) == 0)
return;
output_string = (char *) gp_alloc(2*strlen(str)+1, "FIG text");
s1 = (char *)str;
s2 = output_string;
do {
if (*s1 == '\\') *(s2++) = *s1;
*(s2++) = *s1;
} while ( *(s1++) );
FIG_poly_clean(FIG_polyvec_stat);
if (FIG_angle == 0.)
y -= term->v_char / 2; /* assuming vertical center justified */
else {
x += (int)(term->v_char*sin(FIG_angle)/4.);
y -= (int)(term->v_char*cos(FIG_angle)/4.);
}
/* Adjust depth so that labels are drawn after objects */
if (FIG_current_layer != LAYER_PLOT)
text_depth -= 1;
fprintf(gpoutfile, "%d %d %d %d %d %d %6.3f %6.3f %d %6.3f %6.3f %d %d %s\\001\n",
OBJ_TEXT, FIG_justify, FIG_color, text_depth, FIG_DEFAULT,
FIG_font_id, (float) FIG_font_s,
FIG_angle, FIG_text_flags, (float) term->v_char,
(float) term->h_char * strlen(str),
FIG_xoff + x, term->ymax + FIG_yoff - y, output_string);
free(output_string);
}
TERM_PUBLIC int
FIG_justify_text(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);
}
TERM_PUBLIC int
FIG_text_angle(float ang)
{
FIG_angle = ang * M_PI_2 / 90. ;
return (TRUE);
}
TERM_PUBLIC void
FIG_lpoint(unsigned int x, unsigned int y, int number)
{
/* FIXME: Some complicated gnuplot 4 convention for packing all sorts
* of stuff into the pointtype
*/
if (number % 100 >= 49 && number % 100 < 99) { /* circles, squares, triangles */
int r, d, h, xpc, ypc;
int line_color, fill_color, fill_style;
int cnum, tnum;
FIG_poly_clean(FIG_polyvec_stat);
number %= 100;
cnum = (number + 1) % 10;
tnum = (number - 49) / 10;
if (cnum < 5)
line_color = (FIG_use_color ? BLACK : DEFAULT);
else
line_color = FIG_color;
fill_color = (FIG_use_color) ? FIG_color : DEFAULT;
if (cnum == 0 || cnum == 5)
fill_style = -1;
else
fill_style = (cnum % 5) * 5;
xpc = FIG_xoff + x;
ypc = term->ymax + FIG_yoff - y;
if (tnum == 0) { /* circle */
r = FIG_current_pointsize * term->v_char / 4 + 1;
fprintf(gpoutfile,
"1 3 %d %d %d %d %d %d %d %6.3f 1 0.000 %d %d %d %d %d %d %d %d\n",
SOLID_LINE, FIG_thickness, line_color,
fill_color, FIG_linedepth, 0, fill_style, FIG_spacing,
xpc, ypc, r, r, xpc, ypc, xpc, ypc - r);
} else {
fprintf(gpoutfile, "2 3 %d %d %d %d %d %d %d %6.3f 0 0 0 0 0 ",
SOLID_LINE, FIG_thickness, line_color,
fill_color, FIG_linedepth, 0, fill_style, FIG_spacing);
if (tnum == 1) { /* square */
d = FIG_current_pointsize * term->v_char / 4 + 1;
fprintf(gpoutfile, "5\n\t%d %d %d %d %d %d %d %d %d %d\n",
xpc - d, ypc - d, xpc - d, ypc + d, xpc + d, ypc + d, xpc + d, ypc - d,
xpc - d, ypc - d);
} else if (tnum == 2) { /* diamond */
d = FIG_current_pointsize * term->v_char / 3 + 1;
fprintf(gpoutfile, "5\n\t%d %d %d %d %d %d %d %d %d %d\n",
xpc - d, ypc, xpc, ypc + d, xpc + d, ypc, xpc, ypc - d, xpc - d, ypc);
} else if (tnum == 3) { /* triangle up */
d = FIG_current_pointsize * term->v_char / 3 + 1;
h = d * 4 / 7; /* About d times one 3rd of sqrt(3) */
fprintf(gpoutfile, "4\n\t%d %d %d %d %d %d %d %d\n",
xpc - d, ypc + h, xpc, ypc - 2 * h, xpc + d, ypc + h, xpc - d, ypc + h);
} else if (tnum == 4) { /* triangle down */
d = FIG_current_pointsize * term->v_char / 3 + 1;
h = d * 4 / 7;
fprintf(gpoutfile, "4\n\t%d %d %d %d %d %d %d %d\n",
xpc - d, ypc - h, xpc, ypc + 2 * h, xpc + d, ypc - h, xpc - d, ypc - h);
}
}
} else {
int pt = number % 13;
switch (pt) {
default: do_point(x, y, pt); break;
case 3: FIG_lpoint(x, y, 64); break;
case 4: FIG_lpoint(x, y, 68); break;
case 5: FIG_lpoint(x, y, 54); break;
case 6: FIG_lpoint(x, y, 58); break;
case 7: FIG_lpoint(x, y, 84); break;
case 8: FIG_lpoint(x, y, 88); break;
case 9: FIG_lpoint(x, y, 94); break;
case 10: FIG_lpoint(x, y, 98); break;
case 11: FIG_lpoint(x, y, 74); break;
case 12: FIG_lpoint(x, y, 78); break;
}
}
}
TERM_PUBLIC void
FIG_pointsize(double arg_pointsize)
{
FIG_current_pointsize = arg_pointsize < 0. ? 1. : arg_pointsize;
do_pointsize(arg_pointsize * FIG_font_s / (double) FIG_FONT_S);
}
TERM_PUBLIC void
FIG_linewidth(double linewidth)
{
if (linewidth < 1)
linewidth = 1;
FIG_current_linewidth = linewidth;
}
TERM_PUBLIC void
FIG_reset()
{
FIG_poly_clean(FIG_polyvec_stat);
FIG_posx = FIG_posy = 0;
fflush(gpoutfile);
}
TERM_PUBLIC void
FIG_boxfill(
int style,
unsigned int x, unsigned int y,
unsigned int w, unsigned int h)
{
int pen_color, fill_color, fill_style, fill_dens;
FIG_poly_clean(FIG_polyvec_stat);
FIG_line.pen_color = FIG_color;
switch( style & 0xf ) {
case FS_SOLID:
case FS_TRANSPARENT_SOLID:
/* style == 1 --> filled with intensity according to filldensity */
pen_color = FIG_line.pen_color;
fill_color = FIG_line.pen_color;
fill_dens = style >> 4;
if( fill_dens < 0 ) fill_dens = 0;
if( fill_dens > 100 ) fill_dens = 100;
if( FIG_color == -1 || FIG_color == 0 )
/* default color or black: solid 0%...100% -> 0...20 */
fill_style = fill_dens / 5;
else
/* all other colors: solid 0%...100% -> 40...20 */
fill_style = 40 - fill_dens / 5;
break;
case FS_PATTERN:
case FS_TRANSPARENT_PATTERN:
/* style == 2 --> filled with pattern according to fillpattern */
pen_color = FIG_line.pen_color;
fill_color = FIG_BACKGROUND;
fill_style = 41 + ( ( (style>>4) < 0 ) ? 0 : style>>4 );
break;
case FS_EMPTY:
pen_color = FIG_BACKGROUND;
fill_color = FIG_BACKGROUND;
fill_style = -1;
break;
default:
/* style == 0 or unknown --> filled with background color */
pen_color = FIG_line.pen_color;
fill_color = FIG_line.pen_color;
fill_style = 20;
break;
}
x = FIG_xoff + x;
y = term->ymax + FIG_yoff - y;
fprintf(gpoutfile, "%d %d %d %d %d %d %d %d %d %6.3f %d %d %d %d %d %d\n"
" %d %d %d %d %d %d %d %d %d %d\n",
O_POLYLINE, T_BOX, FIG_line.style, FIG_line.thickness,
pen_color, fill_color, FIG_linedepth, FIG_line.pen_style,
fill_style, FIG_line.style_val, FIG_line.join_style,
FIG_line.cap_style, FIG_line.radius, 0, 0, 5,
x, y, x+w, y, x+w, y-h, x, y-h, x, y );
}
TERM_PUBLIC int FIG_make_palette(t_sm_palette *palette)
{
int i;
/* Query to determine palette size */
if (palette==NULL)
return FIG_palette_size; /* How big is palette ? */
if (FIG_palette_set == FALSE) {
/* Create new palette */
FIG_palette_set = TRUE;
if (FIG_use_color == FALSE || sm_palette.colorMode == SMPAL_COLOR_MODE_GRAY) {
/* Gray palette */
if (FIG_use_color == FALSE && sm_palette.colorMode == SMPAL_COLOR_MODE_RGB)
fprintf(stderr, "Monochrome fig file: using gray palette instead of color\n");
for (i = 0; i < sm_palette.colors; i++) {
int j = (int)(i * 255.0 / (sm_palette.colors-1) + 0.5);
fprintf(gpoutfile, "%d %d #%2.2x%2.2x%2.2x\n",
O_COLOR_DEF, (i + FIG_palette_offst), j, j, j);
}
} else {
/* Create colour/normal palette */
for (i = 0; i < sm_palette.colors; i++) {
fprintf(gpoutfile, "%d %d #%2.2x%2.2x%2.2x\n",
O_COLOR_DEF, (i + FIG_palette_offst),
(int)( palette->color[i].r * 255 + 0.5 ),
(int)( palette->color[i].g * 255 + 0.5 ),
(int)( palette->color[i].b * 255 + 0.5 ) );
FIG_RGB_colors[FIG_palette_offst - FIG_rgb_color_offset + i] =
(int)( palette->color[i].r * 255 + 0.5 ) color[i].g * 255 + 0.5 ) color[i].b * 255 + 0.5 );
}
}
} else {
fprintf(stderr, "fig: Attempt to set palette twice\n");
}
return 0;
}
TERM_PUBLIC void FIG_set_color(t_colorspec *colorspec)
{
double gray = colorspec->value;
int new_color = FIG_color;
int i;
unsigned rgbval;
switch (colorspec->type) {
case TC_LT:
if (colorspec->lt == LT_BLACK)
new_color = BLACK;
else if (colorspec->lt == LT_AXIS)
new_color = FIG_gray_index;
else if (colorspec->lt lt % npscolors];
break;
case TC_FRAC:
if (CHECK_SMPAL_IS_DISCRETE_GRADIENT) {
new_color = index_from_gray(gray);
} else {
if (sm_palette.use_maxcolors != 0)
gray = quantize_gray(gray);
new_color = (gray = 1) ? sm_palette.colors - 1 : (int)(gray * sm_palette.colors);
if (new_color >= FIG_palette_size)
new_color = FIG_palette_size - 1;
}
if (FIG_palette_set == FALSE)
int_warn(NO_CARET,"fig: Palette used before set\n");
new_color += FIG_palette_offst;
break;
case TC_RGB:
/* Look through all of user colors, named colors, and palette colors */
rgbval = colorspec->lt & 0xffffff;
if (rgbval == 0) {
new_color = BLACK;
break;
}
for (i = 0, new_color = -1; i < 256; i++) {
if (rgbval == FIG_RGB_colors[i]) {
new_color = FIG_rgb_color_offset + i;
break;
}
}
if (new_color < 0) {
/* FIXME: We could fill a separate array of up to 256 RGB colors
* encountered as we go. They would then be available on "replot".
*/
fprintf(stderr,"fig: RGB color 0x%x not found\n",rgbval);
fprintf(stderr," Try using it in a 'set linetype' command prior to plotting.\n");
new_color = FIG_gray_index;
}
break;
default:
break;
}
if (FIG_color != new_color) {
FIG_poly_clean(FIG_polyvec_stat);
FIG_color = new_color;
}
}
TERM_PUBLIC void FIG_filled_polygon(int points, gpiPoint *corners)
{
int i,j;
FIG_poly_clean(FIG_polyvec_stat); /* Clean up current data */
fprintf(gpoutfile, "%d %d %d %d %d %d %d %d %d %9.3f %d %d %d %d %d %ld\n\t",
O_POLYLINE, T_POLYGON, FIG_line.style, 0,
FIG_color, FIG_color, FIG_linedepth,
FIG_line.pen_style, FIG_fill_style, FIG_line.style_val,
FIG_line.join_style, FIG_line.cap_style, FIG_line.radius,
0, 0, (long)(points+1));
/* set thickness (arg 4) to 0 */
j = 0;
for (i = 0; i < points; i++) {
fprintf(gpoutfile, " %d %d", FIG_xoff + corners[i].x,
term->ymax + FIG_yoff - corners[i].y);
if (j++ > 4 && i != points - 1) {
fputs("\n\t", gpoutfile);
j = 0; /* JFS */
}
}
fprintf(gpoutfile, " %d %d", FIG_xoff + corners[0].x,
term->ymax + FIG_yoff - corners[0].y);
j++;
if (j != 0) {
putc('\n', gpoutfile);
}
}
TERM_PUBLIC void
FIG_layer(t_termlayer syncpoint)
{
static int save_depth = FIG_DEPTH;
/* We must ignore all syncpoints that we don't recognize */
switch (syncpoint) {
default:
break;
case TERM_LAYER_BEFORE_PLOT:
FIG_poly_clean(FIG_polyvec_stat);
fputs("6", gpoutfile);
/* Bounding box? Give it the entire plot area */
fprintf(gpoutfile, " %d %d %d %d\n",
FIG_xoff + plot_bounds.xleft,
term->ymax + FIG_yoff - plot_bounds.ytop,
FIG_xoff + plot_bounds.xright,
term->ymax + FIG_yoff - plot_bounds.ybot);
fprintf(gpoutfile, "# Begin plot #%d\n", ++FIG_plotno);
FIG_current_layer = LAYER_PLOT;
FIG_linedepth = 700 - FIG_plotno;
break;
case TERM_LAYER_AFTER_PLOT:
FIG_poly_clean(FIG_polyvec_stat);
fprintf(gpoutfile, "# End plot #%d\n", FIG_plotno);
fputs("-6\n", gpoutfile);
FIG_current_layer = LAYER_FRONT;
FIG_linedepth = 200;
break;
case TERM_LAYER_RESET:
if (!multiplot)
FIG_plotno = 0;
FIG_current_layer = LAYER_BEHIND;
FIG_linedepth = 900;
break;
case TERM_LAYER_BACKTEXT:
FIG_current_layer = LAYER_BACK;
FIG_linedepth = 800;
break;
case TERM_LAYER_BEGIN_GRID:
save_depth = FIG_linedepth;
FIG_linedepth = 801;
break;
case TERM_LAYER_END_GRID:
FIG_linedepth = save_depth;
break;
case TERM_LAYER_BEGIN_KEYSAMPLE:
save_depth = FIG_linedepth;
FIG_linedepth = 201;
break;
case TERM_LAYER_END_KEYSAMPLE:
FIG_linedepth = save_depth;
break;
case TERM_LAYER_KEYBOX:
FIG_linedepth = 202;
break;
case TERM_LAYER_BEGIN_PM3D_FLUSH:
save_depth = FIG_linedepth;
FIG_linedepth = 203;
break;
case TERM_LAYER_END_PM3D_FLUSH:
FIG_linedepth = save_depth;
break;
}
}
#endif /* TERM_BODY */
#ifdef TERM_TABLE
TERM_TABLE_START(fig_driver)
"fig", "FIG graphics language V3.2 for XFIG graphics editor",
FIG_XMAX, FIG_YMAX, FIG_VCHAR, FIG_HCHAR,
FIG_VTIC, FIG_HTIC, FIG_options, FIG_init, FIG_reset,
FIG_text, null_scale, FIG_graphics, FIG_move, FIG_vector,
FIG_linetype, FIG_put_text, FIG_text_angle, FIG_justify_text,
FIG_lpoint, FIG_arrow, set_font_null, FIG_pointsize,
TERM_BINARY|TERM_CAN_DASH /*flags */ ,
0 /*suspend */ , 0 /*resume */ ,
FIG_boxfill, FIG_linewidth
#ifdef USE_MOUSE
,0, 0, 0, 0, 0 /* no mouse support for the fig terminal */
#endif
, FIG_make_palette, 0 /*previous_palette*/, FIG_set_color, FIG_filled_polygon
, 0
, 0, 0, 0 /* no enhanced text support */
, FIG_layer
, NULL, 0.0, NULL /* path, scale, hypertext */
, NULL, NULL /* boxed_text, modify_plots */
, FIG_dashtype
TERM_TABLE_END(fig_driver)
#undef LAST_TERM
#define LAST_TERM fig_driver
#endif /* TERM_TABLE */
#endif /* TERM_PROTO_ONLY */
#ifdef TERM_HELP
START_HELP(fig)
"1 fig",
"?commands set terminal fig",
"?set terminal fig",
"?set term fig",
"?terminal fig",
"?term fig",
"?fig",
"?xfig",
" The `fig` terminal device generates output in the Fig graphics language",
" for import into the xfig interactive drawing tool.",
" Notes: ",
" The fig terminal was significantly revised in gnuplot version 5.3.",
" Currently only version 3.2 of the fig file format is supported.",
" Use of dash patterns may require Xfig 3.2.6 or newer.",
"",
" Syntax:",
" set terminal fig {monochrome | color}",
" {small | big | size {in|cm},{in|cm}}",
" {landscape | portrait}",
" {pointsmax }",
" {font \"{,}\"} {fontsize }",
" {textnormal | {textspecial texthidden textrigid}}",
" {{linewidth|lw} }",
"",
" The default settings are",
" set term fig color small landscape font \"Times Roman,10\" lw 1.0",
"",
" `size` sets the size of the drawing area to * in units of",
" inches (default) or centimeters. The default is `size 5in,3in`.",
" `small` is shorthand for `size 5in,3in` (3in,5in in portrait mode).",
" `big` is shorthand for `size 8in,5in`.",
"",
" `pointsmax` sets the maximum number of vertices in a polyline; longer ",
" polylines will be broken into segments.",
"",
" `font` sets the text font face to and its size to ",
" points. Choice is limited to the 35 standard PostScript fonts.",
" `textnormal` resets the text flags and selects postscript fonts,",
" `textspecial` sets the text flags for LaTeX specials,",
" `texthidden` sets the hidden flag and `textrigid` the rigid flag.",
"",
" `linewidth` is a multiplier for the linewidth property of all lines.",
"",
" Additional point-plot symbols are also available in the `fig` driver. The",
" symbols can be used through `pointtype` values % 100 above 50, with different",
" fill intensities controlled by % 5 and outlines in black (for",
" % 10 < 5) or in the current color. Available symbols are",
" 50 - 59: circles",
" 60 - 69: squares",
" 70 - 79: diamonds",
" 80 - 89: upwards triangles",
" 90 - 99: downwards triangles",
" The size of these symbols scales with the font size.",
"",
" RGB colors will be replaced with gray unless they have been defined in a",
" linetype prior to plotting or match a known named color or palette value.",
" See `colornames`.",
" E.g.",
" set linetype 999 lc rgb '#aabbcc'",
" plot $data with fillecurve fillcolor rgb '#aabbcc'",
""
END_HELP(fig)
#endif /* TERM_HELP */
#if 0
/* FORMAT3.2 */
/*
* FIG : Facility for Interactive Generation of figures
* Copyright (c) 1985 by Supoj Sutanthavibul
* Parts Copyright (c) 1989-2002 by Brian V. Smith
* Parts Copyright (c) 1991 by Paul King
* Parts Copyright (c) 1995 by C. Blanc and C. Schlick
*
* Any party obtaining a copy of these files is granted, free of charge, a
* full and unrestricted irrevocable, world-wide, paid up, royalty-free,
* nonexclusive right and license to deal in this software and
* documentation files (the "Software"), including without limitation the
* rights to use, copy, modify, merge, publish and/or distribute copies of
* the Software, and to permit persons who receive copies from any such
* party to do so, with the only requirement being that this copyright
* notice remain intact.
*/
/*
The new components in protocol 3.2 are the paper size, magnification,
single/multiple page indicator and transparent color for GIF export in the
header.
The other modification between version 3.1 and version 3.2 of the
protocol is the mathematical model used for splines. The new version
uses X-splines which allows the user to mix interpolation and approximation
points in a same curve. More precisely, it means that an X-spline curve
is neither an interpolated spline nor an approximated one, it is BOTH
(the behaviour of each point is controlled by one single parameter
called "shape factor"). For additional information about X-splines, see:
"X-Splines: A Spline Model Designed for the End User"
by C. Blanc and C. Schlick, Proceedings of SIGGRAPH95
Caveat: Because spline models of previous versions (quadratic B-splines
and Bezier with hidden points) are no longer supported, curves that are
present in version 3.1 and older files are automatically converted to
X-splines. This translation is only an approximation process. It means
that the converted curves are not exactly the same as the original ones.
Though the translation usually provides almost identical curves, some
hand-fitting may be needed in some pathological cases.
-------------------------------------------------------------------------------
Description of the Fig Format Follows
-------------------------------------------------------------------------------
(1) The very first line is a comment line containing the name and version:
#FIG 3.2
The character # at the first column of a line indicates that the line
is a comment line which will be preserved when the Fig file is read in.
The user may edit them with the popup editor.
The comment line(s) must immediately precede the object to which they
are associated. In the case of the "whole figure comments" mentioned
below, they immediately precede the (resolution,coord_system) line.
(2) The first non-comment line consists of the following:
string orientation ("Landscape" or "Portrait")
string justification ("Center" or "Flush Left")
string units ("Metric" or "Inches")
string papersize ("Letter", "Legal", "Ledger", "Tabloid",
"A", "B", "C", "D", "E",
"A4", "A3", "A2", "A1", "A0" and "B5")
float magnification (export and print magnification, %)
string multiple-page ("Single" or "Multiple" pages)
int transparent color (color number for transparent color for GIF
export. -3=background, -2=None, -1=Default,
0-31 for standard colors or 32- for user colors)
# optional comment (An optional set of comments may be here,
which are associated with the whole figure)
int resolution coord_system (Fig units/inch and coordinate system:
1: origin at lower left corner (NOT USED)
2: upper left)
Fig_resolution is the resolution of the figure in the file.
Xfig will always write the file with a resolution of 1200ppi so it
will scale the figure upon reading it in if its resolution is different
from 1200ppi. Pixels are assumed to be square.
Note about metric units: To preserve a regular grid on the canvas the
centimeter is defined to be 450 Fig units and not 472.4 (1200/2.54).
For drawings done in metric units, fig2dev magnifies the output when
exporting or printing to compensate for the difference (472.4/450).
Also, if you make a drawing in one unit scale and switch to the other
units in xfig, the drawing will be rescaled on the screen by xfig to
remain consistent.
Xfig will read the orientation string and change the canvas to match
either the Landscape or Portrait mode of the figure file.
The units specification is self-explanatory.
The coordinate_system variable is ignored - the origin is ALWAYS the
upper-left corner.
** Coordinates are given in "fig_resolution" units.
** Line thicknesses are given in 1/80 inch (0.3175mm) or 1 screen pixel.
When exporting to EPS, PostScript or any bitmap format (e.g. GIF), the
line thickness is reduced to 1/160 inch (0.159mm) to "lighten" the look.
** dash-lengths/dot-gaps are given in 80-ths of an inch.
(3) The rest of the file contains various objects. An object can be one
of six classes (or types).
0) Color pseudo-object.
1) Ellipse which is a generalization of circle.
2) Polyline which includes polygon and box.
3) Spline which includes
closed/open approximated/interpolated/x-spline spline.
4) Text.
5) Arc.
6) Compound object which is composed of one or more objects.
In the following elaboration on object formats, every value of fig
output are separated by blank characters or new line ('\n'). The
value of the unused parameters will be -1.
Some fields are described as "enumeration type" or "bit vector"; the
values which these fields can take are defined in the header file object.h.
The pen_style field is unused.
These values may be defined in some future version of Fig.
The two color fields (pen and fill; pen only, for texts) are
defined as follows:
-1 = Default
0 = Black
1 = Blue
2 = Green
3 = Cyan
4 = Red
5 = Magenta
6 = Yellow
7 = White
8-11 = four shades of blue (dark to lighter)
12-14 = three shades of green (dark to lighter)
15-17 = three shades of cyan (dark to lighter)
18-20 = three shades of red (dark to lighter)
21-23 = three shades of magenta (dark to lighter)
24-26 = three shades of brown (dark to lighter)
27-30 = four shades of pink (dark to lighter)
31 = Gold
values from 32 to 543 (512 total) are user colors and
are defined in color pseudo-objects (type 0)
Your X server may limit the number of colors to something less
than this, especially on a 8-bit PseudoColor visual, where
the number of usable colors will be 256 minus the number of colors
xfig preallocates for itself and the 32 standard colors (about 48).
For WHITE color, the area fill field is defined as follows:
-1 = not filled
0 = black
... values from 1 to 19 are shades of grey, from darker to lighter
20 = white
21-40 not used
41-56 see patterns for colors, below
For BLACK or DEFAULT color, the area fill field is defined as follows:
-1 = not filled
0 = white
... values from 1 to 19 are shades of grey, from lighter to darker
20 = black
21-40 not used
41-56 see patterns for colors, below
For all other colors, the area fill field is defined as follows:
-1 = not filled
0 = black
... values from 1 to 19 are "shades" of the color, from darker to lighter.
A shade is defined as the color mixed with black
20 = full saturation of the color
... values from 21 to 39 are "tints" of the color from the color to white.
A tint is defined as the color mixed with white
40 = white
41 = 30 degree left diagonal pattern
42 = 30 degree right diagonal pattern
43 = 30 degree crosshatch
44 = 45 degree left diagonal pattern
45 = 45 degree right diagonal pattern
46 = 45 degree crosshatch
47 = horizontal bricks
48 = vertical bricks
49 = horizontal lines
50 = vertical lines
51 = crosshatch
52 = horizontal "shingles" skewed to the right
53 = horizontal "shingles" skewed to the left
54 = vertical "shingles" skewed one way
55 = vertical "shingles"skewed the other way
56 = fish scales
57 = small fish scales
58 = circles
59 = hexagons
60 = octagons
61 = horizontal "tire treads"
62 = vertical "tire treads"
The depth field is defined as follows:
0 ... 999 where larger value means object is deeper than (under)
objects with smaller depth
The line_style field is defined as follows:
-1 = Default
0 = Solid
1 = Dashed
2 = Dotted
3 = Dash-dotted
4 = Dash-double-dotted
5 = Dash-triple-dotted
The style_val field is defined as the length, in 1/80 inches, of the on/off
dashes for dashed lines, and the distance between the dots, in 1/80 inches,
for dotted lines.
The join_style field is defined FOR LINES only as follows:
0 = Miter (the default in xfig 2.1 and earlier)
1 = Round
2 = Bevel
The cap_style field is defined FOR LINES, OPEN SPLINES and ARCS only as follows:
0 = Butt (the default in xfig 2.1 and earlier)
1 = Round
2 = Projecting
The arrow_type field is defined for LINES, ARCS and OPEN SPLINES
only as follows:
0 = Stick-type (the default in xfig 2.1 and earlier)
\
\
_______________\
/
/
/
1 = Closed triangle:
|\
| \
________| \
| /
| /
|/
2 = Closed with "indented" butt:
|\
\ \
\ \
__________\ \
/ /
/ /
/ /
|/
3 = Closed with "pointed" butt:
/\
/ \
/ \
________/ \
\ /
\ /
\ /
\/
The arrow_style field is defined for LINES, ARCS and OPEN SPLINES
only as follows:
0 = Hollow (actually filled with white)
1 = Filled with pen_color
(3.0) OBJECT DEFINITIONS:
================================================
(3.1) Color Pseudo-objects (user-defined colors)
================================================
This is used to define arbitrary colors beyond the 32 standard colors.
The color objects must be defined before any other Fig objects.
First line:
type name (brief description)
---- ---- -------------------
int object_code (always 0)
int color_number (color number, from 32-543 (512 total))
hex string rgb values (hexadecimal string describing red,
green and blue values (e.g. #330099) )
============================================================================
(3.2) ARC
=========
First line:
type name (brief description)
---- ---- -------------------
int object_code (always 5)
int sub_type (1: open ended arc
2: pie-wedge (closed) )
int line_style (enumeration type, solid, dash, dotted, etc.)
int line_thickness (1/80 inch)
int pen_color (enumeration type, pen color)
int fill_color (enumeration type, fill color)
int depth (enumeration type)
int pen_style (pen style, not used)
int area_fill (enumeration type, -1 = no fill)
float style_val (1/80 inch, specification for dash/dotted lines)
int cap_style (enumeration type)
int direction (0: clockwise, 1: counterclockwise)
int forward_arrow (0: no forward arrow, 1: on)
int backward_arrow (0: no backward arrow, 1: on)
float center_x, center_y (center of the arc)
int x1, y1 (Fig units, the 1st point the user entered)
int x2, y2 (Fig units, the 2nd point)
int x3, y3 (Fig units, the last point)
Forward arrow line (Optional; absent if forward_arrow is 0):
type name (brief description)
---- ---- -------------------
int arrow_type (enumeration type)
int arrow_style (enumeration type)
float arrow_thickness (1/80 inch)
float arrow_width (Fig units)
float arrow_height (Fig units)
Backward arrow line (Optional; absent if backward_arrow is 0):
type name (brief description)
---- ---- -------------------
int arrow_type (enumeration type)
int arrow_style (enumeration type)
float arrow_thickness (1/80 inch)
float arrow_width (Fig units)
float arrow_height (Fig units)
============================================================================
(3.3) COMPOUND
==============
A line with object code 6 signifies the start of a compound.
There are four more numbers on this line which indicate the
upper left corner and the lower right corner of the bounding
box of this compound. A line with object code -6 signifies
the end of the compound. Compound may be nested.
First line:
type name (brief description)
---- ---- -------------------
int object_code (always 6)
int upperleft_corner_x (Fig units)
int upperleft_corner_y (Fig units)
int lowerright_corner_x (Fig units)
int lowerright_corner_y (Fig units)
Subsequent lines:
objects
.
.
Last line:
-6
============================================================================
(3.4) ELLIPSE
=============
First line:
type name (brief description)
---- ---- -------------------
int object_code (always 1)
int sub_type (1: ellipse defined by radii
2: ellipse defined by diameters
3: circle defined by radius
4: circle defined by diameter)
int line_style (enumeration type, solid, dash, dotted, etc.)
int thickness (1/80 inch)
int pen_color (enumeration type, pen color)
int fill_color (enumeration type, fill color)
int depth (enumeration type)
int pen_style (pen style, not used)
int area_fill (enumeration type, -1 = no fill)
float style_val (1/80 inch, specification for dash/dotted lines)
int direction (always 1)
float angle (radians, the angle of the x-axis)
int center_x, center_y (Fig units)
int radius_x, radius_y (Fig units)
int start_x, start_y (Fig units; the 1st point entered)
int end_x, end_y (Fig units; the last point entered)
============================================================================
(3.5) POLYLINE
==============
First line:
type name (brief description)
---- ---- -------------------
int object_code (always 2)
int sub_type (1: polyline
2: box
3: polygon
4: arc-box)
5: imported-picture bounding-box)
int line_style (enumeration type, solid, dash, dotted, etc.)
int thickness (1/80 inch)
int pen_color (enumeration type, pen color)
int fill_color (enumeration type, fill color)
int depth (enumeration type)
int pen_style (pen style, not used)
int area_fill (enumeration type, -1 = no fill)
float style_val (1/80 inch, specification for dash/dotted lines)
int join_style (enumeration type)
int cap_style (enumeration type, only used for POLYLINE)
int radius (1/80 inch, radius of arc-boxes)
int forward_arrow (0: off, 1: on)
int backward_arrow (0: off, 1: on)
int npoints (number of points in line)
Forward arrow line: same as ARC object
Backward arrow line: same as ARC object
For picture (type 5) the following line follows:
type name (brief description)
---- ---- -------------------
boolean flipped orientation = normal (0) or flipped (1)
char file[] name of picture file to import
Points line(s). The x,y coordinates follow, any number to a line, with
as many lines as are necessary:
type name (brief description)
---- ---- -------------------
int x1, y1 (Fig units)
int x2, y2 (Fig units)
.
.
int xnpoints ynpoints (this will be the same as the 1st
point for polygon and box)
============================================================================
(3.6) SPLINE
============
First line:
type name (brief description)
---- ---- -------------------
int object_code (always 3)
int sub_type (0: open approximated spline
1: closed approximated spline
2: open interpolated spline
3: closed interpolated spline
4: open x-spline
5: closed x-spline)
int line_style (enumeration type, solid, dash, dotted, etc.)
int thickness (1/80 inch)
int pen_color (enumeration type, pen color)
int fill_color (enumeration type, fill color)
int depth (enumeration type)
int pen_style (pen style, not used)
int area_fill (enumeration type, -1 = no fill)
float style_val (1/80 inch, specification for dash/dotted lines)
int cap_style (enumeration type, only used for open splines)
int forward_arrow (0: off, 1: on)
int backward_arrow (0: off, 1: on)
int npoints (number of control points in spline)
Forward arrow line: same as ARC object
Backward arrow line: same as ARC object
Points line: same as POLYLINE object
Control points line :
There is one shape factor for each point. The value of this factor
must be between -1 (which means that the spline is interpolated at
this point) and 1 (which means that the spline is approximated at
this point). The spline is always smooth in the neighbourhood of a
control point, except when the value of the factor is 0 for which
there is a first-order discontinuity (i.e. angular point).
============================================================================
(3.7) TEXT
==========
type name (brief description)
---- ---- -------------------
int object (always 4)
int sub_type (0: Left justified
1: Center justified
2: Right justified)
int color (enumeration type)
int depth (enumeration type)
int pen_style (enumeration , not used)
int font (enumeration type)
float font_size (font size in points)
float angle (radians, the angle of the text)
int font_flags (bit vector)
float height (Fig units)
float length (Fig units)
int x, y (Fig units, coordinate of the origin
of the string. If sub_type = 0, it is
the lower left corner of the string.
If sub_type = 1, it is the lower
center. Otherwise it is the lower
right corner of the string.)
char string[] (ASCII characters; starts after a blank
character following the last number and
ends before the sequence '\001'. This
sequence is not part of the string.
Characters above octal 177 are
represented by \xxx where xxx is the
octal value. This permits fig files to
be edited with 7-bit editors and sent
by e-mail without data loss.
Note that the string may contain '\n'.)
The font_flags field is defined as follows:
Bit Description
0 Rigid text (text does not scale when scaling compound objects)
1 Special text (for LaTeX)
2 PostScript font (otherwise LaTeX font is used)
3 Hidden text
The font field is defined as follows:
For font_flags bit 2 = 0 (LaTeX fonts):
0 Default font
1 Roman
2 Bold
3 Italic
4 Sans Serif
5 Typewriter
For font_flags bit 2 = 1 (PostScript fonts):
-1 Default font
0 Times Roman
1 Times Italic
2 Times Bold
3 Times Bold Italic
4 AvantGarde Book
5 AvantGarde Book Oblique
6 AvantGarde Demi
7 AvantGarde Demi Oblique
8 Bookman Light
9 Bookman Light Italic
10 Bookman Demi
11 Bookman Demi Italic
12 Courier
13 Courier Oblique
14 Courier Bold
15 Courier Bold Oblique
16 Helvetica
17 Helvetica Oblique
18 Helvetica Bold
19 Helvetica Bold Oblique
20 Helvetica Narrow
21 Helvetica Narrow Oblique
22 Helvetica Narrow Bold
23 Helvetica Narrow Bold Oblique
24 New Century Schoolbook Roman
25 New Century Schoolbook Italic
26 New Century Schoolbook Bold
27 New Century Schoolbook Bold Italic
28 Palatino Roman
29 Palatino Italic
30 Palatino Bold
31 Palatino Bold Italic
32 Symbol
33 Zapf Chancery Medium Italic
34 Zapf Dingbats
*/
#endif