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authorStarla Insigna <starla4444@gmail.com>2011-07-30 11:19:14 -0400
committerStarla Insigna <starla4444@gmail.com>2011-07-30 11:19:14 -0400
commit9cd57b731ab1c666d4a1cb725538fdc137763d12 (patch)
tree5bac45ae5157a1cb10c6e45500cbf72789917980 /libs/cocos2d/Support/TransformUtils.m
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Initial commit (version 0.2.1)
Diffstat (limited to 'libs/cocos2d/Support/TransformUtils.m')
-rwxr-xr-xlibs/cocos2d/Support/TransformUtils.m46
1 files changed, 46 insertions, 0 deletions
diff --git a/libs/cocos2d/Support/TransformUtils.m b/libs/cocos2d/Support/TransformUtils.m new file mode 100755 index 0000000..9caecf0 --- /dev/null +++ b/libs/cocos2d/Support/TransformUtils.m
@@ -0,0 +1,46 @@
1/*
2 * cocos2d for iPhone: http://www.cocos2d-iphone.org
3 *
4 * Copyright (c) 2009 Valentin Milea
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 *
24 */
25
26
27#import "TransformUtils.h"
28
29void CGAffineToGL(const CGAffineTransform *t, GLfloat *m)
30{
31 // | m[0] m[4] m[8] m[12] | | m11 m21 m31 m41 | | a c 0 tx |
32 // | m[1] m[5] m[9] m[13] | | m12 m22 m32 m42 | | b d 0 ty |
33 // | m[2] m[6] m[10] m[14] | <=> | m13 m23 m33 m43 | <=> | 0 0 1 0 |
34 // | m[3] m[7] m[11] m[15] | | m14 m24 m34 m44 | | 0 0 0 1 |
35
36 m[2] = m[3] = m[6] = m[7] = m[8] = m[9] = m[11] = m[14] = 0.0f;
37 m[10] = m[15] = 1.0f;
38 m[0] = t->a; m[4] = t->c; m[12] = t->tx;
39 m[1] = t->b; m[5] = t->d; m[13] = t->ty;
40}
41
42void GLToCGAffine(const GLfloat *m, CGAffineTransform *t)
43{
44 t->a = m[0]; t->c = m[4]; t->tx = m[12];
45 t->b = m[1]; t->d = m[5]; t->ty = m[13];
46}