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
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
|
/*
* Copyright © 2009 Adrian Johnson
*
* 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: Adrian Johnson <ajohnson@redneon.com>
*/
#include "cairo-test.h"
#define SIZE 90
#define PAD 10
#define WIDTH (PAD + 2 * (SIZE + PAD))
#define HEIGHT (PAD + SIZE + PAD)
/*
* This test is designed to paint a two mesh patches. One with default
* control points and one with a control point at a no default
* location. The control points of both of them are drawn as squares
* to make them visible.
*/
static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
cairo_pattern_t *pattern;
unsigned int i, j;
unsigned int num_patches;
double x, y;
cairo_set_source_rgb (cr, 1, 1, 1);
cairo_paint (cr);
cairo_translate (cr, PAD, PAD);
pattern = cairo_pattern_create_mesh ();
cairo_mesh_pattern_begin_patch (pattern);
cairo_mesh_pattern_move_to (pattern, 0, 0);
cairo_mesh_pattern_line_to (pattern, SIZE, 0);
cairo_mesh_pattern_line_to (pattern, SIZE, SIZE);
cairo_mesh_pattern_line_to (pattern, 0, SIZE);
cairo_mesh_pattern_set_corner_color_rgb (pattern, 0, 1, 0, 0);
cairo_mesh_pattern_set_corner_color_rgb (pattern, 1, 0, 1, 0);
cairo_mesh_pattern_set_corner_color_rgb (pattern, 2, 0, 0, 1);
cairo_mesh_pattern_set_corner_color_rgb (pattern, 3, 1, 1, 0);
cairo_mesh_pattern_set_control_point (pattern, 0, SIZE * .7, SIZE * .7);
cairo_mesh_pattern_set_control_point (pattern, 1, SIZE * .9, SIZE * .7);
cairo_mesh_pattern_set_control_point (pattern, 2, SIZE * .9, SIZE * .9);
cairo_mesh_pattern_set_control_point (pattern, 3, SIZE * .7, SIZE * .9);
cairo_mesh_pattern_end_patch (pattern);
cairo_mesh_pattern_begin_patch (pattern);
cairo_mesh_pattern_move_to (pattern, SIZE + PAD, 0);
cairo_mesh_pattern_line_to (pattern, 2*SIZE + PAD, 0);
cairo_mesh_pattern_line_to (pattern, 2*SIZE + PAD, SIZE);
cairo_mesh_pattern_line_to (pattern, SIZE + PAD, SIZE);
cairo_mesh_pattern_set_corner_color_rgb (pattern, 0, 1, 0, 0);
cairo_mesh_pattern_set_corner_color_rgb (pattern, 1, 0, 1, 0);
cairo_mesh_pattern_set_corner_color_rgb (pattern, 2, 0, 0, 1);
cairo_mesh_pattern_set_corner_color_rgb (pattern, 3, 1, 1, 0);
cairo_mesh_pattern_end_patch (pattern);
cairo_set_source (cr, pattern);
cairo_paint (cr);
/* mark the location of the control points */
cairo_set_source_rgb (cr, 0, 0, 0);
cairo_mesh_pattern_get_patch_count (pattern, &num_patches);
for (i = 0; i < num_patches; i++) {
for (j = 0; j < 4; j++) {
cairo_mesh_pattern_get_control_point (pattern, i, j, &x, &y);
cairo_rectangle (cr, x - 5, y - 5, 10, 10);
cairo_fill (cr);
}
}
cairo_pattern_destroy (pattern);
return CAIRO_TEST_SUCCESS;
}
CAIRO_TEST (mesh_pattern_control_points,
"Paint mesh pattern with non default control points",
"mesh, pattern", /* keywords */
NULL, /* requirements */
WIDTH, HEIGHT,
NULL, draw)
|
