+++ /dev/null
-/* Libart_LGPL - library of basic graphic primitives
- * Copyright (C) 1998, 1999 Raph Levien
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- */
-
-#include <stdio.h>
-#include <string.h>
-#include <math.h>
-#include "art_misc.h"
-#include "art_vpath.h"
-#include "art_svp.h"
-#include "art_svp_vpath.h"
-#include "art_gray_svp.h"
-#include "art_rgb_svp.h"
-#include "art_svp_vpath_stroke.h"
-#include "art_svp_ops.h"
-#include "art_affine.h"
-#include "art_rgb_affine.h"
-#include "art_rgb_bitmap_affine.h"
-#include "art_rgb_rgba_affine.h"
-#include "art_alphagamma.h"
-#include "art_svp_point.h"
-#include "art_vpath_dash.h"
-#include "art_render.h"
-#include "art_render_gradient.h"
-#include "art_render_svp.h"
-#include "art_svp_intersect.h"
-
-#ifdef DEAD_CODE
-static void
-test_affine (void) {
- double src[6];
- double dst[6];
- double src2[6];
- char str[128];
- int i;
- ArtPoint ps, pd, ptmp;
-
- for (i = 0; i < 6; i++)
- {
- src[i] = (rand () * 2.0 / RAND_MAX) - 1.0;
- src2[i] = (rand () * 2.0 / RAND_MAX) - 1.0;
- }
-#if 0
- src[0] = 0.9999999;
- src[1] = -0.000001;
- src[2] = 0.000001;
- src[3] = 0.9999999;
- src[4] = 0;
- src[5] = 0;
-#if 1
- src[0] = 0.98480775;
- src[1] = -0.17364818;
- src[2] = 0.17364818;
- src[3] = 0.98480775;
-#endif
-
- src2[0] = 0.98480775;
- src2[1] = -0.17364818;
- src2[2] = 0.17364818;
- src2[3] = 0.98480775;
-#endif
-
-
- ps.x = rand() * 100.0 / RAND_MAX;
- ps.y = rand() * 100.0 / RAND_MAX;
-
- art_affine_point (&pd, &ps, src);
- art_affine_invert (dst, src);
- art_affine_point (&ptmp, &pd, dst);
- art_affine_to_string (str, src);
- printf ("src = %s\n", str);
- art_affine_to_string (str, dst);
- printf ("dst = %s\n", str);
- printf ("point (%g, %g) -> (%g, %g) -> (%g, %g)\n",
- ps.x, ps.y, pd.x, pd.y, ptmp.x, ptmp.y);
-
- art_affine_point (&ptmp, &ps, src);
- art_affine_point (&pd, &ptmp, src2);
- art_affine_to_string (str, src2);
- printf ("src2 = %s\n", str);
- printf ("point (%g, %g) -> (%g, %g) -> (%g, %g)\n",
- ps.x, ps.y, ptmp.x, ptmp.y, pd.x, pd.y);
- art_affine_multiply (dst, src, src2);
- art_affine_to_string (str, dst);
- printf ("dst = %s\n", str);
- art_affine_point (&pd, &ps, dst);
- printf ("point (%g, %g) -> (%g, %g)\n",
- ps.x, ps.y, pd.x, pd.y);
-
-}
-#endif
-
-static ArtVpath *
-randstar (int n)
-{
- ArtVpath *vec;
- int i;
- double r, th;
-
- vec = art_new (ArtVpath, n + 2);
- for (i = 0; i < n; i++)
- {
- vec[i].code = i ? ART_LINETO : ART_MOVETO;
- r = rand () * (250.0 / RAND_MAX);
-#if 0
- r = r + 0.9 * (250 - r);
-#endif
- th = i * 2 * M_PI / n;
- vec[i].x = 250 + r * cos (th);
- vec[i].y = 250 - r * sin (th);
- }
- vec[i].code = ART_LINETO;
- vec[i].x = vec[0].x;
- vec[i].y = vec[0].y;
- i++;
- vec[i].code = ART_END;
- vec[i].x = 0;
- vec[i].y = 0;
- return vec;
-}
-
-#define TILE_SIZE 512
-#define NUM_ITERS 1
-#define COLOR
-
-#ifdef COLOR
-#define BYTES_PP 3
-#else
-#define BYTES_PP 1
-#endif
-
-#ifndef nDEAD_CODE
-static void
-print_svp (ArtSVP *vp)
-{
- int i, j;
-
- for (i = 0; i < vp->n_segs; i++)
- {
- printf ("segment %d, dir = %s (%f, %f) - (%f, %f)\n",
- i, vp->segs[i].dir ? "down" : "up",
- vp->segs[i].bbox.x0,
- vp->segs[i].bbox.y0,
- vp->segs[i].bbox.x1,
- vp->segs[i].bbox.y1);
- for (j = 0; j < vp->segs[i].n_points; j++)
- printf (" (%g, %g)\n",
- vp->segs[i].points[j].x,
- vp->segs[i].points[j].y);
- }
-}
-#endif
-
-static void
-print_vpath (ArtVpath *vpath)
-{
- int i;
-
- for (i = 0; vpath[i].code != ART_END; i++)
- printf ("%g %g %s\n",
- vpath[i].x, vpath[i].y,
- vpath[i].code == ART_MOVETO_OPEN ? "moveto %open" :
- vpath[i].code == ART_MOVETO ? "moveto" :
- vpath[i].code == ART_LINETO ? "lineto" :
- "?");
-
- printf ("stroke\n");
-}
-
-static void
-make_testpat (void)
-{
- ArtVpath *vpath, *vpath2, *vpath3;
- ArtSVP *svp, *svp2;
- ArtSVP *svp3;
- art_u8 buf[512 * 512 * BYTES_PP];
- int i, j;
- int iter;
- art_u8 colorimg[256][256][3];
- art_u8 rgbaimg[256][256][4];
- art_u8 bitimg[16][2];
- int x, y;
- double affine[6];
- double affine2[6];
- double affine3[6];
- ArtAlphaGamma *alphagamma;
- double dash_data[] = { 20 };
- ArtVpathDash dash;
-
- dash.offset = 0;
- dash.n_dash = 1;
- dash.dash = dash_data;
-
-#ifdef TEST_AFFINE
- test_affine ();
- exit (0);
-#endif
-
- vpath = randstar (50);
- svp = art_svp_from_vpath (vpath);
- art_free (vpath);
-
- vpath2 = randstar (50);
-#if 1
- vpath3 = art_vpath_dash (vpath2, &dash);
- art_free (vpath2);
- svp2 = art_svp_vpath_stroke (vpath3,
- ART_PATH_STROKE_JOIN_MITER,
- ART_PATH_STROKE_CAP_BUTT,
- 15,
- 4,
- 0.5);
- art_free (vpath3);
-#else
- svp2 = art_svp_from_vpath (vpath2);
-#endif
-
-#if 1
- svp3 = art_svp_intersect (svp, svp2);
-#else
- svp3 = svp2;
-#endif
-
-#if 0
- print_svp (svp);
-#endif
-
- for (y = 0; y < 256; y++)
- for (x = 0; x < 256; x++)
- {
- colorimg[y][x][0] = (x + y) >> 1;
- colorimg[y][x][1] = (x + (255 - y)) >> 1;
- colorimg[y][x][2] = ((255 - x) + y) >> 1;
-
- rgbaimg[y][x][0] = (x + y) >> 1;
- rgbaimg[y][x][1] = (x + (255 - y)) >> 1;
- rgbaimg[y][x][2] = ((255 - x) + y) >> 1;
- rgbaimg[y][x][3] = y;
- }
-
- for (y = 0; y < 16; y++)
- for (x = 0; x < 2; x++)
- bitimg[y][x] = (x << 4) | y;
-
- affine[0] = 0.5;
- affine[1] = .2;
- affine[2] = -.2;
- affine[3] = 0.5;
- affine[4] = 64;
- affine[5] = 64;
-
- affine2[0] = 1;
- affine2[1] = -.2;
- affine2[2] = .2;
- affine2[3] = 1;
- affine2[4] = 128;
- affine2[5] = 128;
-
- affine3[0] = 5;
- affine3[1] = -.2;
- affine3[2] = .2;
- affine3[3] = 5;
- affine3[4] = 384;
- affine3[5] = 32;
-
-#if 0
- alphagamma = art_alphagamma_new (1.8);
-#else
- alphagamma = NULL;
-#endif
-
-#ifdef COLOR
- printf ("P6\n512 512\n255\n");
-#else
- printf ("P5\n512 512\n255\n");
-#endif
- for (iter = 0; iter < NUM_ITERS; iter++)
- for (j = 0; j < 512; j += TILE_SIZE)
- for (i = 0; i < 512; i += TILE_SIZE)
- {
-#ifdef COLOR
- art_rgb_svp_aa (svp, i, j, i + TILE_SIZE, j + TILE_SIZE,
- 0xffe0a0, 0x100040,
- buf + (j * 512 + i) * BYTES_PP, 512 * BYTES_PP,
- alphagamma);
- art_rgb_svp_alpha (svp2, i, j, i + TILE_SIZE, j + TILE_SIZE,
- 0xff000080,
- buf + (j * 512 + i) * BYTES_PP, 512 * BYTES_PP,
- alphagamma);
- art_rgb_svp_alpha (svp3, i, j, i + TILE_SIZE, j + TILE_SIZE,
- 0x00ff0080,
- buf + (j * 512 + i) * BYTES_PP, 512 * BYTES_PP,
- alphagamma);
- art_rgb_affine (buf + (j * 512 + i) * BYTES_PP,
- i, j, i + TILE_SIZE, j + TILE_SIZE, 512 * BYTES_PP,
- (art_u8 *)colorimg, 256, 256, 256 * 3,
- affine,
- ART_FILTER_NEAREST, alphagamma);
- art_rgb_rgba_affine (buf + (j * 512 + i) * BYTES_PP,
- i, j, i + TILE_SIZE, j + TILE_SIZE,
- 512 * BYTES_PP,
- (art_u8 *)rgbaimg, 256, 256, 256 * 4,
- affine2,
- ART_FILTER_NEAREST, alphagamma);
- art_rgb_bitmap_affine (buf + (j * 512 + i) * BYTES_PP,
- i, j, i + TILE_SIZE, j + TILE_SIZE,
- 512 * BYTES_PP,
- (art_u8 *)bitimg, 16, 16, 2,
- 0xffff00ff,
- affine3,
- ART_FILTER_NEAREST, alphagamma);
-#else
- art_gray_svp_aa (svp, i, j, i + TILE_SIZE, j + TILE_SIZE,
- buf + (j * 512 + i) * BYTES_PP, 512 * BYTES_PP);
-#endif
- }
-
- art_svp_free (svp2);
- art_svp_free (svp3);
- art_svp_free (svp);
-
-#if 1
- fwrite (buf, 1, 512 * 512 * BYTES_PP, stdout);
-#endif
-}
-
-static void
-test_dist (void)
-{
- ArtVpath *vpath;
- ArtSVP *svp;
- art_u8 buf[512 * 512 * BYTES_PP];
- int x, y;
- int ix;
- double dist;
- int wind;
-
- vpath = randstar (20);
-#ifdef NO_STROKE
- svp = art_svp_from_vpath (vpath);
-#else
- svp = art_svp_vpath_stroke (vpath,
- ART_PATH_STROKE_JOIN_MITER,
- ART_PATH_STROKE_CAP_BUTT,
- 15,
- 4,
- 0.5);
-#endif
-
- art_rgb_svp_aa (svp, 0, 0, 512, 512,
- 0xffe0a0, 0x100040,
- buf, 512 * BYTES_PP,
- NULL);
-
- ix = 0;
- for (y = 0; y < 512; y++)
- {
- for (x = 0; x < 512; x++)
- {
- wind = art_svp_point_wind (svp, x, y);
- buf[ix] = 204 - wind * 51;
- dist = art_svp_point_dist (svp, x, y);
- if (((x | y) & 0x3f) == 0)
- {
- fprintf (stderr, "%d,%d: %f\n", x, y, dist);
- }
- buf[ix + 1] = 255 - dist;
- ix += 3;
- }
- }
-
- printf ("P6\n512 512\n255\n");
- fwrite (buf, 1, 512 * 512 * BYTES_PP, stdout);
-
-}
-
-static void
-test_dash (void)
-{
- ArtVpath *vpath, *vpath2;
- double dash_data[] = { 10, 4, 1, 4};
- ArtVpathDash dash;
-
- dash.offset = 0;
- dash.n_dash = 3;
- dash.dash = dash_data;
-
- vpath = randstar (50);
- vpath2 = art_vpath_dash (vpath, &dash);
- printf ("%%!\n");
- print_vpath (vpath2);
- printf ("showpage\n");
- art_free (vpath);
- art_free (vpath2);
-}
-
-static void
-test_render_gradient (art_u8 *buf)
-{
- ArtGradientLinear gradient;
- ArtGradientStop stops[3] = {
- { 0.0, { 0x7fff, 0x0000, 0x0000, 0x7fff }},
- { 0.5, { 0x0000, 0x0000, 0x0000, 0x1000 }},
- { 1.0, { 0x0000, 0x7fff, 0x0000, 0x7fff }}
- };
- ArtVpath *vpath;
- ArtSVP *svp;
- ArtRender *render;
-
- gradient.a = 0.003;
- gradient.b = -0.0015;
- gradient.c = 0.1;
- gradient.spread = ART_GRADIENT_PAD;
- gradient.n_stops = sizeof(stops) / sizeof(stops[0]);
- gradient.stops = stops;
-
- vpath = randstar (50);
- svp = art_svp_from_vpath (vpath);
-
- render = art_render_new (0, 0, 512, 512, buf, 512 * 3, 3, 8, ART_ALPHA_NONE,
- NULL);
- art_render_svp (render, svp);
- art_render_gradient_linear (render, &gradient, ART_FILTER_NEAREST);
- art_render_invoke (render);
-
-}
-
-static void
-test_render_rad_gradient (art_u8 *buf)
-{
- ArtGradientRadial gradient;
- ArtGradientStop stops[3] = {
- { 0.0, { 0xffff, 0x0000, 0x0000, 0xffff }},
- { 0.5, { 0xe000, 0xe000, 0x0000, 0xe000 }},
- { 1.0, { 0x0000, 0x0000, 0x0000, 0x0000 }}
- };
- ArtVpath *vpath;
- ArtSVP *svp;
- ArtRender *render;
-
- gradient.affine[0] = 3.0 / 512;
- gradient.affine[1] = 0;
- gradient.affine[2] = 0;
- gradient.affine[3] = 3.0 / 512;
- gradient.affine[4] = -1.5;
- gradient.affine[5] = -1.5;
- gradient.fx = 0.9;
- gradient.fy = 0.1;
-
- gradient.n_stops = sizeof(stops) / sizeof(stops[0]);
- gradient.stops = stops;
-
- vpath = randstar (50);
- svp = art_svp_from_vpath (vpath);
-
- render = art_render_new (0, 0, 512, 512, buf, 512 * 3, 3, 8, ART_ALPHA_NONE,
- NULL);
- art_render_svp (render, svp);
- art_render_gradient_radial (render, &gradient, ART_FILTER_NEAREST);
- art_render_invoke (render);
-
-}
-
-static void
-test_gradient (void)
-{
- ArtVpath *vpath;
- ArtSVP *svp;
- art_u8 buf[512 * 512 * 3];
- ArtRender *render;
- ArtPixMaxDepth color[3] = {0x0000, 0x0000, 0x8000 };
- int i;
- const int n_iter = 1;
-
- vpath = randstar (50);
- svp = art_svp_from_vpath (vpath);
-
- for (i = 0; i < n_iter; i++)
- {
-#define USE_RENDER
-#ifdef USE_RENDER
- render = art_render_new (0, 0, 512, 512, buf, 512 * 3, 3, 8, ART_ALPHA_NONE,
- NULL);
- art_render_clear_rgb (render, 0xfff0c0);
- art_render_svp (render, svp);
- art_render_image_solid (render, color);
- art_render_invoke (render);
-#else
- art_rgb_svp_aa (svp, 0, 0, 512, 512, 0xfff0c0, 0x000080,
- buf, 512 * 3, NULL);
-#endif
- }
-
-#if 1
- test_render_gradient (buf);
-#endif
- test_render_rad_gradient (buf);
-
- printf ("P6\n512 512\n255\n");
- fwrite (buf, 1, 512 * 512 * 3, stdout);
-}
-
-static void
-output_svp_ppm (const ArtSVP *svp)
-{
- art_u8 buf[512 * 512 * 3];
- art_rgb_svp_aa (svp, 0, 0, 512, 512, 0xfff0c0, 0x000080,
- buf, 512 * 3, NULL);
- printf ("P6\n512 512\n255\n");
- fwrite (buf, 1, 512 * 512 * 3, stdout);
-}
-
-static void
-test_intersect (void)
-{
- ArtVpath vpath[] = {
-
-#if 0
- /* two triangles */
- { ART_MOVETO, 100, 100 },
- { ART_LINETO, 300, 400 },
- { ART_LINETO, 400, 200 },
- { ART_LINETO, 100, 100 },
- { ART_MOVETO, 110, 110 },
- { ART_LINETO, 310, 410 },
- { ART_LINETO, 410, 210 },
- { ART_LINETO, 110, 110 },
-#endif
-
-#if 0
- /* a bowtie */
- { ART_MOVETO, 100, 100 },
- { ART_LINETO, 400, 400 },
- { ART_LINETO, 400, 100 },
- { ART_LINETO, 100, 400 },
- { ART_LINETO, 100, 100 },
-#endif
-
-#if 1
- /* a square */
- { ART_MOVETO, 100, 100 },
- { ART_LINETO, 100, 400 },
- { ART_LINETO, 400, 400 },
- { ART_LINETO, 400, 100 },
- { ART_LINETO, 100, 100 },
-#endif
-
-#if 1
- /* another square */
-#define XOFF 10
-#define YOFF 10
- { ART_MOVETO, 100 + XOFF, 100 + YOFF },
- { ART_LINETO, 100 + XOFF, 400 + YOFF },
- { ART_LINETO, 400 + XOFF, 400 + YOFF },
- { ART_LINETO, 400 + XOFF, 100 + YOFF },
- { ART_LINETO, 100 + XOFF, 100 + YOFF },
-#endif
-
- { ART_END, 0, 0}
- };
- ArtSVP *svp, *svp2;
- ArtSvpWriter *swr;
-
- svp = art_svp_from_vpath (vpath);
-
-#define RUN_INTERSECT
-#ifdef RUN_INTERSECT
- swr = art_svp_writer_rewind_new (ART_WIND_RULE_ODDEVEN);
- art_svp_intersector (svp, swr);
-
- svp2 = art_svp_writer_rewind_reap (swr);
-#endif
-
-#if 0
- output_svp_ppm (svp2);
-#else
- print_svp (svp2);
-#endif
-
- art_svp_free (svp);
-
-#ifdef RUN_INTERSECT
- art_svp_free (svp2);
-#endif
-}
-
-static void
-usage (void)
-{
- fprintf (stderr, "usage: testart <test>\n"
-" where <test> is one of:\n"
-" testpat -- make random star + gradients test pattern\n"
-" gradient -- test pattern for rendered gradients\n"
-" dash -- dash test (output is valid PostScript)\n"
-" dist -- distance test\n"
-" intersect -- softball test for intersector\n");
- exit (1);
-}
-
-int
-main (int argc, char **argv)
-{
- if (argc < 2)
- usage ();
-
- if (!strcmp (argv[1], "testpat"))
- make_testpat ();
- else if (!strcmp (argv[1], "gradient"))
- test_gradient ();
- else if (!strcmp (argv[1], "dist"))
- test_dist ();
- else if (!strcmp (argv[1], "dash"))
- test_dash ();
- else if (!strcmp (argv[1], "intersect"))
- test_intersect ();
- else
- usage ();
- return 0;
-}
projects / rrdtool.git / blobdiff