/****************************************************************************
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.

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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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****************************************************************************/

#ifndef __CCPAGE_TURN_TRANSITION_H__
#define __CCPAGE_TURN_TRANSITION_H__

#include "CCTransition.h"
#include "2d/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 Matrix &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__