/****************************************************************************
Copyright (c) 2009      Sindesso Pty Ltd http://www.sindesso.com/
Copyright (c) 2010-2012 cocos2d-x.org
Copyright (c) 2013-2014 Chukong Technologies Inc.

http://www.cocos2d-x.org

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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,
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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****************************************************************************/

#ifndef __CCPAGE_TURN_TRANSITION_H__
#define __CCPAGE_TURN_TRANSITION_H__

#include "2d/CCTransition.h"
#include "renderer/CCCustomCommand.h"

NS_CC_BEGIN

class NodeGrid;

/**
 * @addtogroup transition
 * @{
 */

/**
@brief A transition which peels back the bottom right hand corner of a scene
to transition to the scene beneath it simulating a page turn.

This uses a 3DAction so it's strongly recommended that depth buffering
is turned on in Director using:

 Director::getInstance()->setDepthBufferFormat(kDepthBuffer16);

 @since v0.8.2
*/
class CC_DLL TransitionPageTurn : public TransitionScene
{
public:
    /**
     * Creates a base transition with duration and incoming scene.
     * If back is true then the effect is reversed to appear as if the incoming
     * scene is being turned from left over the outgoing scene.
     */
    static TransitionPageTurn* create(float t,Scene* scene,bool backwards);
    /**
     * @js ctor
     */
    TransitionPageTurn();
    /**
     * @js NA
     * @lua NA
     */
    virtual ~TransitionPageTurn();
    
    //
    // Overrides
    //
    virtual void draw(Renderer *renderer, const Mat4 &transform, bool transformUpdated) override;

    /**
    * Creates a base transition with duration and incoming scene.
    * If back is true then the effect is reversed to appear as if the incoming 
    * scene is being turned from left over the outgoing scene.
    */
    bool initWithDuration(float t,Scene* scene,bool backwards);

    ActionInterval* actionWithSize(const Size& vector);

    //
    // Overrides
    //
    virtual void onEnter() override;
    virtual void onExit() override;

protected:
    virtual void sceneOrder() override;

protected:
    NodeGrid* _inSceneProxy;
    NodeGrid* _outSceneProxy;
    bool    _back;    
    static float POLYGON_OFFSET_FACTOR;
    static float POLYGON_OFFSET_UNITS;
    
protected:
    CustomCommand _enableOffsetCmd;
    CustomCommand _disableOffsetCmd;
    void onEnablePolygonOffset();
    void onDisablePolygonOffset();
};

// end of transition group
/// @}

NS_CC_END

#endif // __CCPAGE_TURN_TRANSITION_H__