diff options
Diffstat (limited to 'test/random-clips.c')
| -rw-r--r-- | test/random-clips.c | 232 |
1 files changed, 0 insertions, 232 deletions
diff --git a/test/random-clips.c b/test/random-clips.c deleted file mode 100644 index 31d7d6df0..000000000 --- a/test/random-clips.c +++ /dev/null @@ -1,232 +0,0 @@ -/* - * Copyright © 2006 M Joonas Pihlaja - * Copyright © 2011 Chris Wilson - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, copy, - * modify, merge, publish, distribute, sublicense, and/or sell copies - * of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be - * included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - * - * Authors: - * M Joonas Pihlaja <jpihlaja@cc.helsinki.fi> - * Chris Wilson <chris@chris-wilson.co.uk> - */ -#include "cairo-test.h" - -#define SIZE 512 -#define STEP (512+2) -#define NUM_SEGMENTS 128 - -static uint32_t state; - -static double -uniform_random (double minval, double maxval) -{ - static uint32_t const poly = 0x9a795537U; - uint32_t n = 32; - while (n-->0) - state = 2*state < state ? (2*state ^ poly) : 2*state; - return minval + state * (maxval - minval) / 4294967296.0; -} - -static void nz_path (cairo_t *cr) -{ - int i; - - state = 0xc0ffee; - - cairo_move_to (cr, 0, 0); - for (i = 0; i < NUM_SEGMENTS; i++) { - double x = uniform_random (0, SIZE); - double y = uniform_random (0, SIZE); - cairo_line_to (cr, x, y); - } - cairo_close_path (cr); -} - -static void region_path (cairo_t *cr) -{ - int i; - - state = 0xc0ffee; - - for (i = 0; i < NUM_SEGMENTS; i++) { - int x = uniform_random (0, SIZE); - int y = uniform_random (0, SIZE); - int w = uniform_random (0, 40); - int h = uniform_random (0, 40); - cairo_rectangle (cr, x, y, w, h); - } -} - -static void rectangle_path (cairo_t *cr) -{ - int i; - - state = 0xc0ffee; - - for (i = 0; i < NUM_SEGMENTS; i++) { - double x = uniform_random (0, SIZE); - double y = uniform_random (0, SIZE); - double w = uniform_random (0, 40); - double h = uniform_random (0, 40); - cairo_rectangle (cr, x, y, w, h); - } -} - -static void arc_path (cairo_t *cr) -{ - int i; - - state = 0xc0ffee; - - for (i = 0; i < NUM_SEGMENTS; i++) { - double x = uniform_random (0, SIZE); - double y = uniform_random (0, SIZE); - double r = uniform_random (0, 20); - cairo_new_sub_path (cr); - cairo_arc (cr, x, y, r, 0, 2*M_PI); - } -} - - -static void nz_fill_stroke (cairo_t *cr) -{ - nz_path (cr); - - cairo_set_source_rgb (cr, 1, 0, 0); - cairo_fill_preserve (cr); - cairo_set_source_rgb (cr, 0, 1, 0); - cairo_set_line_width (cr, 1.0); - cairo_stroke (cr); -} - -static void clip_to_quadrant (cairo_t *cr) -{ - cairo_rectangle (cr, 0, 0, SIZE, SIZE); - cairo_clip (cr); -} - -static cairo_test_status_t -draw (cairo_t *cr, int width, int height) -{ - cairo_set_source_rgb (cr, 0, 0, 0); - cairo_paint (cr); - - cairo_set_fill_rule (cr, CAIRO_FILL_RULE_WINDING); - - state = 0xc0ffee; - cairo_translate (cr, 1, 1); - - /* no clipping */ - cairo_save (cr); { - clip_to_quadrant (cr); - - nz_fill_stroke (cr); - } cairo_restore (cr); - - cairo_translate (cr, STEP, 0); - - /* random clipping */ - cairo_save (cr); { - clip_to_quadrant (cr); - - nz_path (cr); - cairo_clip (cr); - - nz_fill_stroke (cr); - - cairo_set_source_rgba (cr, 1, 1, 1, 0.5); - cairo_paint (cr); - } cairo_restore (cr); - - cairo_translate (cr, STEP, 0); - - /* regional clipping */ - cairo_save (cr); { - clip_to_quadrant (cr); - - region_path (cr); - cairo_clip (cr); - - nz_fill_stroke (cr); - - cairo_set_source_rgba (cr, 1, 1, 1, 0.5); - cairo_paint (cr); - } cairo_restore (cr); - - cairo_translate (cr, -2*STEP, STEP); - - /* rectangular clipping */ - cairo_save (cr); { - clip_to_quadrant (cr); - - rectangle_path (cr); - cairo_clip (cr); - - nz_fill_stroke (cr); - - cairo_set_source_rgba (cr, 1, 1, 1, 0.5); - cairo_paint (cr); - } cairo_restore (cr); - - cairo_translate (cr, STEP, 0); - - /* circular clipping */ - cairo_save (cr); { - clip_to_quadrant (cr); - - arc_path (cr); - cairo_clip (cr); - - nz_fill_stroke (cr); - - cairo_set_source_rgba (cr, 1, 1, 1, 0.5); - cairo_paint (cr); - } cairo_restore (cr); - - cairo_translate (cr, STEP, 0); - - /* all-of-the-above clipping */ - cairo_save (cr); { - clip_to_quadrant (cr); - - nz_path (cr); - cairo_clip (cr); - region_path (cr); - cairo_clip (cr); - rectangle_path (cr); - cairo_clip (cr); - arc_path (cr); - cairo_clip (cr); - - nz_fill_stroke (cr); - - cairo_set_source_rgba (cr, 1, 1, 1, 0.5); - cairo_paint (cr); - } cairo_restore (cr); - - return CAIRO_TEST_SUCCESS; -} - -CAIRO_TEST (random_clip, - "Tests the clip generation and intersection computation", - "trap, clip", /* keywords */ - NULL, /* requirements */ - 3*STEP+2, 2*STEP+2, - NULL, draw) |