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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/CCActionPageTurn3D.m
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Initial commit (version 0.2.1)
Diffstat (limited to 'libs/cocos2d/CCActionPageTurn3D.m')
-rwxr-xr-xlibs/cocos2d/CCActionPageTurn3D.m86
1 files changed, 86 insertions, 0 deletions
diff --git a/libs/cocos2d/CCActionPageTurn3D.m b/libs/cocos2d/CCActionPageTurn3D.m new file mode 100755 index 0000000..ee59500 --- /dev/null +++ b/libs/cocos2d/CCActionPageTurn3D.m
@@ -0,0 +1,86 @@
1/*
2 * cocos2d for iPhone: http://www.cocos2d-iphone.org
3 *
4 * Copyright (c) 2009 Sindesso Pty Ltd http://www.sindesso.com/
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#import "CCActionPageTurn3D.h"
27
28@implementation CCPageTurn3D
29
30/*
31 * Update each tick
32 * Time is the percentage of the way through the duration
33 */
34-(void)update:(ccTime)time
35{
36 float tt = MAX( 0, time - 0.25f );
37 float deltaAy = ( tt * tt * 500);
38 float ay = -100 - deltaAy;
39
40 float deltaTheta = - (float) M_PI_2 * sqrtf( time) ;
41 float theta = /*0.01f*/ + (float) M_PI_2 +deltaTheta;
42
43 float sinTheta = sinf(theta);
44 float cosTheta = cosf(theta);
45
46 for( int i = 0; i <=gridSize_.x; i++ )
47 {
48 for( int j = 0; j <= gridSize_.y; j++ )
49 {
50 // Get original vertex
51 ccVertex3F p = [self originalVertex:ccg(i,j)];
52
53 float R = sqrtf(p.x*p.x + (p.y - ay) * (p.y - ay));
54 float r = R * sinTheta;
55 float alpha = asinf( p.x / R );
56 float beta = alpha / sinTheta;
57 float cosBeta = cosf( beta );
58
59 // If beta > PI then we've wrapped around the cone
60 // Reduce the radius to stop these points interfering with others
61 if( beta <= M_PI)
62 p.x = ( r * sinf(beta));
63 else
64 {
65 // Force X = 0 to stop wrapped
66 // points
67 p.x = 0;
68 }
69
70 p.y = ( R + ay - ( r*(1 - cosBeta)*sinTheta));
71
72 // We scale z here to avoid the animation being
73 // too much bigger than the screen due to perspectve transform
74 p.z = (r * ( 1 - cosBeta ) * cosTheta) / 7; // "100" didn't work for
75
76 // Stop z coord from dropping beneath underlying page in a transition
77 // issue #751
78 if( p.z<0.5f )
79 p.z = 0.5f;
80
81 // Set new coords
82 [self setVertex:ccg(i,j) vertex:p];
83 }
84 }
85}
86@end