diff options
Diffstat (limited to 'test/tighten-bounds.c')
| -rw-r--r-- | test/tighten-bounds.c | 172 |
1 files changed, 0 insertions, 172 deletions
diff --git a/test/tighten-bounds.c b/test/tighten-bounds.c deleted file mode 100644 index f5430e447..000000000 --- a/test/tighten-bounds.c +++ /dev/null @@ -1,172 +0,0 @@ -/* - * Copyright © 2011 Uli Schlachter - * - * 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. - * - * Author: Uli Schlachter <psychon@znc.in> - */ - -#include "cairo-test.h" - -static void path_none (cairo_t *cr, int size) -{ -} - -static void path_box (cairo_t *cr, int size) -{ - cairo_rectangle (cr, 0, 0, size, size); -} - -static void path_box_unaligned (cairo_t *cr, int size) -{ - cairo_rectangle (cr, 0.5, 0.5, size - 1, size - 1); -} - -static void path_triangle (cairo_t *cr, int size) -{ - cairo_move_to (cr, 0, 0); - cairo_line_to (cr, size/2, size); - cairo_line_to (cr, size, 0); - cairo_close_path (cr); -} - -static void path_circle (cairo_t *cr, int size) -{ - cairo_arc (cr, size / 2.0, size / 2.0, size / 2.0, 0, 2 * M_PI); -} - -static void (* const path_funcs[])(cairo_t *cr, int size) = { - path_none, - path_box, - path_box_unaligned, - path_triangle, - path_circle -}; - -#define SIZE 20 -#define PAD 2 -#define TYPES 6 -/* All-clipped is boring, thus we skip path_none for clipping */ -#define CLIP_OFFSET 1 -#define IMAGE_WIDTH ((ARRAY_LENGTH (path_funcs) - CLIP_OFFSET) * TYPES * (SIZE + PAD) - PAD) -#define IMAGE_HEIGHT (ARRAY_LENGTH (path_funcs) * (SIZE + PAD) - PAD) - -static void -draw_idx (cairo_t *cr, int i, int j, int type) -{ - cairo_bool_t little_path; - cairo_bool_t empty_clip; - cairo_bool_t little_clip; - - /* The lowest bit controls the path, the rest the clip */ - little_path = type & 1; - - /* We don't want the combination "empty_clip = TRUE, little_clip = FALSE" - * (== all clipped). - */ - switch (type >> 1) - { - case 0: - empty_clip = FALSE; - little_clip = FALSE; - break; - case 1: - empty_clip = FALSE; - little_clip = TRUE; - break; - case 2: - empty_clip = TRUE; - little_clip = TRUE; - break; - default: - return; - } - - cairo_save (cr); - - /* Thanks to the fill rule, drawing something twice removes it again */ - cairo_set_fill_rule (cr, CAIRO_FILL_RULE_EVEN_ODD); - - path_funcs[i] (cr, SIZE); - if (empty_clip) - path_funcs[i] (cr, SIZE); - if (little_clip) - { - cairo_save (cr); - cairo_translate (cr, SIZE / 4, SIZE / 4); - path_funcs[i] (cr, SIZE / 2); - cairo_restore (cr); - } - cairo_clip (cr); - - path_funcs[j] (cr, SIZE); - path_funcs[j] (cr, SIZE); - if (little_path) - { - /* Draw the object again in the center of itself */ - cairo_save (cr); - cairo_translate (cr, SIZE / 4, SIZE / 4); - path_funcs[j] (cr, SIZE / 2); - cairo_restore (cr); - } - cairo_fill (cr); - cairo_restore (cr); -} - -static cairo_test_status_t -draw (cairo_t *cr, int width, int height) -{ - size_t i, j, k; - - cairo_set_source_rgb (cr, 0, 1, 0); - cairo_paint (cr); - - /* Set an unbounded operator so that we can see how accurate the bounded - * extents were. - */ - cairo_set_operator (cr, CAIRO_OPERATOR_IN); - cairo_set_source_rgb (cr, 1, 1, 1); - - for (j = 0; j < ARRAY_LENGTH (path_funcs); j++) { - cairo_save (cr); - for (i = CLIP_OFFSET; i < ARRAY_LENGTH (path_funcs); i++) { - for (k = 0; k < TYPES; k++) { - cairo_save (cr); - cairo_rectangle (cr, 0, 0, SIZE, SIZE); - cairo_clip (cr); - draw_idx (cr, i, j, k); - cairo_restore (cr); - cairo_translate (cr, SIZE + PAD, 0); - } - } - cairo_restore (cr); - cairo_translate (cr, 0, SIZE + PAD); - } - - return CAIRO_TEST_SUCCESS; -} - -CAIRO_TEST (tighten_bounds, - "Tests that we tighten the bounds after tessellation.", - "fill", /* keywords */ - NULL, /* requirements */ - IMAGE_WIDTH, IMAGE_HEIGHT, - NULL, draw) |