From 9cd57b731ab1c666d4a1cb725538fdc137763d12 Mon Sep 17 00:00:00 2001
From: Starla Insigna <starla4444@gmail.com>
Date: Sat, 30 Jul 2011 11:19:14 -0400
Subject: Initial commit (version 0.2.1)

---
 libs/cocos2d/CCActionPageTurn3D.m | 86 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 86 insertions(+)
 create mode 100755 libs/cocos2d/CCActionPageTurn3D.m

(limited to 'libs/cocos2d/CCActionPageTurn3D.m')

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 @@
+/*
+ * cocos2d for iPhone: http://www.cocos2d-iphone.org
+ *
+ * Copyright (c) 2009 Sindesso Pty Ltd http://www.sindesso.com/
+ *
+ * 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.
+ *
+ */
+
+#import "CCActionPageTurn3D.h"
+
+@implementation CCPageTurn3D
+
+/*
+ * Update each tick
+ * Time is the percentage of the way through the duration
+ */
+-(void)update:(ccTime)time
+{
+	float tt = MAX( 0, time - 0.25f );
+	float deltaAy = ( tt * tt * 500);
+	float ay = -100 - deltaAy;
+	
+	float deltaTheta = - (float) M_PI_2 * sqrtf( time) ;
+	float theta = /*0.01f*/ + (float) M_PI_2 +deltaTheta;
+	
+	float sinTheta = sinf(theta);
+	float cosTheta = cosf(theta);
+	
+	for( int i = 0; i <=gridSize_.x; i++ )
+	{
+		for( int j = 0; j <= gridSize_.y; j++ )
+		{
+			// Get original vertex
+			ccVertex3F	p = [self originalVertex:ccg(i,j)];
+			
+			float R = sqrtf(p.x*p.x + (p.y - ay) * (p.y - ay));
+			float r = R * sinTheta;
+			float alpha = asinf( p.x / R );
+			float beta = alpha / sinTheta;
+			float cosBeta = cosf( beta );
+			
+			// If beta > PI then we've wrapped around the cone
+			// Reduce the radius to stop these points interfering with others
+			if( beta <= M_PI)
+				p.x = ( r * sinf(beta));
+			else
+			{
+				// Force X = 0 to stop wrapped
+				// points
+				p.x = 0;
+			}
+			
+			p.y = ( R + ay - ( r*(1 - cosBeta)*sinTheta));
+			
+			// We scale z here to avoid the animation being
+			// too much bigger than the screen due to perspectve transform
+			p.z = (r * ( 1 - cosBeta ) * cosTheta) / 7; // "100" didn't work for
+				
+			// Stop z coord from dropping beneath underlying page in a transition
+			// issue #751				
+			if( p.z<0.5f )
+				p.z = 0.5f;
+			
+			// Set new coords
+			[self setVertex:ccg(i,j) vertex:p];
+		}
+	}
+}
+@end
-- 
cgit 1.4.1