зеркало из https://github.com/mozilla/gecko-dev.git
229 строки
5.4 KiB
C
229 строки
5.4 KiB
C
/* Libart_LGPL - library of basic graphic primitives
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* Copyright (C) 1998 Raph Levien
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <math.h>
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#include "art_misc.h"
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#include "art_uta.h"
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#include "art_vpath.h"
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#include "art_uta_vpath.h"
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#include "art_rect.h"
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#include "art_rect_uta.h"
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#include "art_uta_rect.h"
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#define TEST_UTA
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#define noTEST_UTA_SPEED
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#define XOFF 50
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#define YOFF 700
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static void
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print_uta_ps (ArtUta *uta)
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{
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int x, y;
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int x0, y0, x1, y1;
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int width = uta->width;
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ArtUtaBbox ub;
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for (y = 0; y < uta->height; y++)
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for (x = 0; x < width; x++)
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{
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ub = uta->utiles[y * width + x];
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if (ub != 0)
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{
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x0 = (uta->x0 + x) * ART_UTILE_SIZE + ART_UTA_BBOX_X0(ub);
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x1 = (uta->x0 + x) * ART_UTILE_SIZE + ART_UTA_BBOX_X1(ub);
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y0 = (uta->y0 + y) * ART_UTILE_SIZE + ART_UTA_BBOX_Y0(ub);
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y1 = (uta->y0 + y) * ART_UTILE_SIZE + ART_UTA_BBOX_Y1(ub);
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printf ("%% tile %d, %d: %d %d %d %d\n",
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x, y,
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ART_UTA_BBOX_X0(ub),
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ART_UTA_BBOX_Y0(ub),
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ART_UTA_BBOX_X1(ub),
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ART_UTA_BBOX_Y1(ub));
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printf ("%d %d moveto %d %d lineto %d %d lineto %d %d lineto closepath fill\n",
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XOFF + x0, YOFF - y0, XOFF + x1, YOFF - y0,
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XOFF + x1, YOFF - y1, XOFF + x0, YOFF - y1);
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}
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}
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}
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static void
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print_rbuf_ps (int *rbuf, int width, int height)
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{
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int x, y;
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for (y = 0; y < height; y++)
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for (x = 0; x < width; x++)
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if (1 && rbuf[y * width + x] != 0)
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printf ("%d %d moveto (%d) show\n", x * ART_UTILE_SIZE, y * ART_UTILE_SIZE,
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rbuf[y * width + x]);
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}
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#if 0
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void
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randline (ArtUta *uta, int *rbuf, int rbuf_rowstride)
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{
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double x0, y0, x1, y1;
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x0 = rand () * (500.0 / RAND_MAX);
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y0 = rand () * (500.0 / RAND_MAX);
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x1 = rand () * (500.0 / RAND_MAX);
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y1 = rand () * (500.0 / RAND_MAX);
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printf ("%g %g moveto %g %g lineto stroke\n", x0, y0, x1, y1);
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art_uta_add_line (uta, x0, y0, x1, y1, rbuf, rbuf_rowstride);
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}
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#endif
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static void
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print_ps_vpath (ArtVpath *vpath)
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{
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int i;
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for (i = 0; vpath[i].code != ART_END; i++)
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{
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switch (vpath[i].code)
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{
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case ART_MOVETO:
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printf ("%g %g moveto\n", XOFF + vpath[i].x, YOFF - vpath[i].y);
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break;
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case ART_LINETO:
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printf ("%g %g lineto\n", XOFF + vpath[i].x, YOFF - vpath[i].y);
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break;
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default:
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break;
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}
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}
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printf ("stroke\n");
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}
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static ArtVpath *
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randstar (int n)
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{
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ArtVpath *vec;
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int i;
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double r, th;
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vec = art_new (ArtVpath, n + 2);
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for (i = 0; i < n; i++)
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{
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vec[i].code = i ? ART_LINETO : ART_MOVETO;
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r = rand () * (250.0 / RAND_MAX);
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th = i * 2 * M_PI / n;
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vec[i].x = 250 + r * cos (th);
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vec[i].y = 250 - r * sin (th);
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}
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vec[i].code = ART_LINETO;
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vec[i].x = vec[0].x;
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vec[i].y = vec[0].y;
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i++;
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vec[i].code = ART_END;
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vec[i].x = 0;
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vec[i].y = 0;
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return vec;
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}
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int
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main (int argc, char **argv)
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{
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ArtUta *uta;
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int i;
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int *rbuf;
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ArtVpath *vec;
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ArtIRect *rects;
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int n_rects;
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if (argc == 2)
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srand (atoi (argv[1]));
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#ifdef TEST_UTA
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printf ("%%!PS-Adobe\n");
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printf ("/Helvetica findfont 12 scalefont setfont\n");
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printf ("0.5 setlinewidth\n");
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printf ("0.5 setgray\n");
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for (i = 0; i < 500; i += ART_UTILE_SIZE)
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{
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printf ("%d %d moveto %d %d lineto stroke\n",
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XOFF, YOFF - i, XOFF + 500, YOFF - i);
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printf ("%d %d moveto %d %d lineto stroke\n",
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XOFF + i, YOFF, XOFF + i, YOFF - 500);
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}
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printf ("/a {\n");
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#if 1
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vec = randstar (50);
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print_ps_vpath (vec);
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uta = art_uta_from_vpath (vec);
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#ifdef TEST_UTA_RECT
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{
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ArtIRect bbox = {5, 5, 450, 450};
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uta = art_uta_from_irect (&bbox);
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}
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#endif
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rbuf = 0;
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#else
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uta = art_uta_new_coords (0, 0, 500, 500);
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rbuf = malloc (sizeof(int) * (500 >> ART_UTILE_SHIFT) * (500 >> ART_UTILE_SHIFT));
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for (i = 0; i < 10; i++)
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randline (uta, rbuf, 500 >> ART_UTILE_SHIFT);
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#endif
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printf ("} def 1 0.5 0.5 setrgbcolor\n");
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print_uta_ps (uta);
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printf ("0 0 0.5 setrgbcolor\n");
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if (rbuf)
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print_rbuf_ps (rbuf, 500 >> ART_UTILE_SHIFT, 500 >> ART_UTILE_SHIFT);
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printf ("0 setgray a\n");
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rects = art_rect_list_from_uta (uta, 256, 64, &n_rects);
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printf ("%% %d rectangles:\n0 0 1 setrgbcolor\n", n_rects);
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for (i = 0; i < n_rects; i++)
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printf ("%d %d moveto %d %d lineto %d %d lineto %d %d lineto closepath stroke\n",
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XOFF + rects[i].x0, YOFF - rects[i].y0,
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XOFF + rects[i].x1, YOFF - rects[i].y0,
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XOFF + rects[i].x1, YOFF - rects[i].y1,
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XOFF + rects[i].x0, YOFF - rects[i].y1);
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printf ("showpage\n");
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#endif
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#ifdef TEST_UTA_SPEED
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for (i = 0; i < 1000; i++)
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{
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vec = randstar (50);
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uta = art_uta_from_vpath (vec);
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art_free (vec);
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art_uta_free (uta);
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}
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#endif
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return 0;
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}
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