1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
|
/*
* Copyright © 2005 Red Hat, Inc.
* Copyright © 2009 Chris Wilson
*
* Permission to use, copy, modify, distribute, and sell this software
* and its documentation for any purpose is hereby granted without
* fee, provided that the above copyright notice appear in all copies
* and that both that copyright notice and this permission notice
* appear in supporting documentation, and that the name of
* Red Hat, Inc. not be used in advertising or publicity pertaining to
* distribution of the software without specific, written prior
* permission. Red Hat, Inc. makes no representations about the
* suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* RED HAT, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL RED HAT, INC. BE LIABLE FOR ANY SPECIAL,
* INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
* IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* Author: Carl D. Worth <cworth@cworth.org>
* Chris Wilson <chris@chris-wilson.co.uk>
*/
#include "cairo-test.h"
#define SIZE 30
/* Another attempt at avoiding unnecessary splines was made, where
* a curve-to that ended on the same point as it began were discarded.
* The same bug was made to rel-curve-to as well, hence this test.
*/
static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
cairo_set_source_rgb (cr, 1.0, 1.0, 1.0); /* white */
cairo_paint (cr);
cairo_set_line_width (cr, 1.0);
cairo_set_line_cap (cr, CAIRO_LINE_CAP_BUTT);
cairo_set_line_join (cr, CAIRO_LINE_JOIN_BEVEL);
cairo_set_source_rgb (cr, 0.0, 0.0, 0.0); /* black */
/* entirely degenerate */
cairo_move_to (cr, 2.5, 2.5);
cairo_rel_curve_to (cr,
0., 0.,
0., 0.,
0., 0.);
cairo_stroke (cr);
/* horizontal */
cairo_move_to (cr, 5.5, 2.5);
cairo_rel_curve_to (cr,
10., 0.,
-10., 0.,
0., 0.);
cairo_stroke (cr);
/* vertical */
cairo_move_to (cr, 5.5, 2.5);
cairo_rel_curve_to (cr,
0., 10.,
0., -10.,
0., 0.);
cairo_stroke (cr);
cairo_translate (cr, 15, 0);
/* horizontal/vertical */
cairo_move_to (cr, 5.5, 0.5);
cairo_rel_curve_to (cr,
-6., 0.,
0., 10.,
0., 0.);
cairo_translate (cr, 10, 0);
/* vertical/horizontal */
cairo_move_to (cr, 5.5, 0.0);
cairo_rel_curve_to (cr,
0., 11.,
5., 0.,
0., 0.);
cairo_stroke (cr);
return CAIRO_TEST_SUCCESS;
}
CAIRO_TEST (degenerate_rel_curve_to,
"Test optimization treating degenerate rel-curve-to as line-to",
"path", /* keywords */
NULL, /* requirements */
40,
5,
NULL, draw)
|
