2 * Copyright © 2004 Red Hat, Inc.
4 * Permission to use, copy, modify, distribute, and sell this software
5 * and its documentation for any purpose is hereby granted without
6 * fee, provided that the above copyright notice appear in all copies
7 * and that both that copyright notice and this permission notice
8 * appear in supporting documentation, and that the name of
9 * Red Hat, Inc. not be used in advertising or publicity pertaining to
10 * distribution of the software without specific, written prior
11 * permission. Red Hat, Inc. makes no representations about the
12 * suitability of this software for any purpose. It is provided "as
13 * is" without express or implied warranty.
15 * RED HAT, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
16 * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
17 * FITNESS, IN NO EVENT SHALL RED HAT, INC. BE LIABLE FOR ANY SPECIAL,
18 * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
19 * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
20 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
21 * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
23 * Author: Carl D. Worth <cworth@cworth.org>
28 * 2004-10-27 Carl Worth <cworth@cworth.org>
30 * There's currently a regression bug in the tessellation code. This
31 * causes each of these simple star shapes to be filled incorrectly.
33 * It looks like right now we can get this test to pass by doing:
35 * cvs update -r 1.16 src/cairo_traps.c
37 * But we don't want to revert that change permanently since it
38 * really does correct some bugs. It must be that the old version of
39 * the code is masking some other bugs in the tessellation code. My
40 * current plan is to back this revision up for the next snapshot,
41 * but not to list the test as an expected failure since I'm
42 * planning on doing the new tessellator which should fix this
45 * 2005-01-11 Carl Worth <cworth@cworth.org>
47 * Keith committed some fixes that fix the original size-20
50 * * src/cairo_wideint.c: (_cairo_int32x32_64_mul),
51 * (_cairo_int64x64_128_mul):
52 * * src/cairo_wideint.h:
53 * int32x32_64_mul and int64x64_128_mul are different from their
54 * unsigned compatriots
56 * 2005-01-12 Carl Worth <cworth@cworth.org>
58 * Going back to the SVG test suite, however, the original star
59 * shape is still broken. Adding both shapes now as little_star_path
64 #include "cairo-test.h"
66 #define LITTLE_STAR_SIZE 20
67 #define BIG_STAR_SIZE 80
69 /* The SVG start trimmed down, but still showing the bug (originally) */
71 little_star_path (cairo_t *cr)
73 cairo_move_to (cr, 10, 0);
74 cairo_rel_line_to (cr, 6, 20);
75 cairo_rel_line_to (cr, -16, -12);
76 cairo_rel_line_to (cr, 20, 0);
77 cairo_rel_line_to (cr, -16, 12);
80 /* The star shape from the SVG test suite. This was is still buggy even after
81 we got little_star_path working. */
83 big_star_path (cairo_t *cr)
85 cairo_move_to (cr, 40, 0);
86 cairo_rel_line_to (cr, 25, 80);
87 cairo_rel_line_to (cr, -65, -50);
88 cairo_rel_line_to (cr, 80, 0);
89 cairo_rel_line_to (cr, -65, 50);
90 cairo_close_path (cr);
93 /* Fill the same path twice, once with each fill rule */
94 static cairo_test_status_t
95 draw (cairo_t *cr, int width, int height)
97 cairo_set_source_rgb (cr, 1, 0, 0);
99 cairo_translate (cr, 1, 1);
100 little_star_path (cr);
101 cairo_set_fill_rule (cr, CAIRO_FILL_RULE_WINDING);
104 cairo_translate (cr, LITTLE_STAR_SIZE + 1, 0);
105 little_star_path (cr);
106 cairo_set_fill_rule (cr, CAIRO_FILL_RULE_EVEN_ODD);
109 cairo_translate (cr, -(LITTLE_STAR_SIZE + 1), LITTLE_STAR_SIZE + 1);
111 cairo_set_fill_rule (cr, CAIRO_FILL_RULE_WINDING);
114 cairo_translate (cr, BIG_STAR_SIZE + 1, 0);
116 cairo_set_fill_rule (cr, CAIRO_FILL_RULE_EVEN_ODD);
119 return CAIRO_TEST_SUCCESS;
122 CAIRO_TEST (fill_rule,
123 "Tests cairo_set_fill_rule with some star shapes",
124 "fill, path", /* keywords */
125 NULL, /* requirements */
126 BIG_STAR_SIZE * 2 + 3, BIG_STAR_SIZE + LITTLE_STAR_SIZE + 3,