mirror of https://github.com/axmolengine/axmol.git
109 lines
3.2 KiB
C++
109 lines
3.2 KiB
C++
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/****************************************************************************
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Copyright (c) 2010 cocos2d-x.org
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http://www.cocos2d-x.org
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#include "CCPageTurn3DAction.h"
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namespace cocos2d
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{
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CCPageTurn3D* CCPageTurn3D::actionWithSize(cocos2d::ccGridSize gridSize, cocos2d::ccTime time)
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{
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CCPageTurn3D *pAction = new CCPageTurn3D();
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if (pAction)
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{
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if (pAction->initWithSize(gridSize, time))
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{
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pAction->autorelease();
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}
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else
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{
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CCX_SAFE_RELEASE(pAction);
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}
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}
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return pAction;
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}
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/*
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* Update each tick
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* Time is the percentage of the way through the duration
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*/
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void CCPageTurn3D::update(cocos2d::ccTime time)
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{
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float tt = MAX(0, time - 0.25f);
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float deltaAy = (tt * tt * 500);
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float ay = -100 - deltaAy;
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float deltaTheta = - (float) M_PI_2 * sqrtf( time) ;
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float theta = /*0.01f + */ (float) M_PI_2 +deltaTheta;
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float sinTheta = sinf(theta);
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float cosTheta = cosf(theta);
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for (int i = 0; i <= m_sGridSize.x; ++i)
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{
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for (int j = 0; j <= m_sGridSize.y; ++j)
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{
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// Get original vertex
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ccVertex3F p = originalVertex(ccg(i ,j));
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float R = sqrtf((p.x * p.x) + ((p.y - ay) * (p.y - ay)));
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float r = R * sinTheta;
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float alpha = asinf( p.x / R );
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float beta = alpha / sinTheta;
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float cosBeta = cosf( beta );
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// If beta > PI then we've wrapped around the cone
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// Reduce the radius to stop these points interfering with others
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if (beta <= M_PI)
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{
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p.x = ( r * sinf(beta));
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p.y = ( R + ay - ( r * (1 - cosBeta) * sinTheta));
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// We scale z here to avoid the animation being
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// too much bigger than the screen due to perspectve transform
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p.z = (r * ( 1 - cosBeta ) * cosTheta) / 100;
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}
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else
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{
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// Force X = 0 to stop wrapped
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// points
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p.x = 0;
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p.y = ( R + ay - ( r * (1 - cosBeta) * sinTheta));
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p.z = 0.001f;
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}
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// Stop z coord from dropping beneath underlying page in a transition
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if( p.z<0.001f )
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{
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p.z = 0.001f;
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}
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// Set new coords
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setVertex(ccg(i, j), p);
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}
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}
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}
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} // end of namespace cocos2d
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