cocos2d-x节点（CCActionCamera.h)API

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cocos2d-x节点（CCActionCamera.h)API

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Camera 助手类，设置camera在球面坐标系中的运动范围

///cocos2d-x-3.0alpha0/cocos2dx/actions
//Camera 助手类，设置camera 在球面坐标系中的运动范围

#ifndef __CCCAMERA_ACTION_H__
#define __CCCAMERA_ACTION_H__

#include "CCActionInterval.h"

NS_CC_BEGIN

class Camera;

/**
 * @addtogroup actions
 * @{
 */

/** 
@brief 有关 Camera 动作的基础类
@ingroup Actions
*/
class CC_DLL ActionCamera : public ActionInterval //<NSCopying> 
{
public:
    /**
     * @js ctor
     */
    ActionCamera()
		:_centerXOrig(0)
        ,_centerYOrig(0)
        ,_centerZOrig(0)
        ,_eyeXOrig(0)
        ,_eyeYOrig(0)
        ,_eyeZOrig(0)
        ,_upXOrig(0)
        ,_upYOrig(0)
        ,_upZOrig(0)
    {}
    
    /**
     * @js NA
     * @lua NA
     */
    virtual ~ActionCamera(){}

    // Overrides
    virtual void startWithTarget(Node *target) override;
    virtual ActionCamera * reverse() const override;
	virtual ActionCamera *clone() const override;

protected:
    float _centerXOrig;
    float _centerYOrig;
    float _centerZOrig;

    float _eyeXOrig;
    float _eyeYOrig;
    float _eyeZOrig;

    float _upXOrig;
    float _upYOrig;
    float _upZOrig;
};

/** 
@brief OrbitCamera（轨道摄像机） action
camera 绕在球面坐标系中心的轨道
 @ingroup Actions       //圈内动作
*/
class CC_DLL OrbitCamera : public ActionCamera //<NSCopying> 
{
public:
    /** 使用 radius, delta-radius,  z, deltaZ, x, deltaX 创建一个OrbitCamera action */
    static OrbitCamera* create(float t, float radius, float deltaRadius, float angleZ, float deltaAngleZ, float angleX, float deltaAngleX);
    /**
     * @js ctor
     */
    OrbitCamera()
		: _radius(0.0)
        , _deltaRadius(0.0)
        , _angleZ(0.0)
        , _deltaAngleZ(0.0)
        , _angleX(0.0)            
        , _deltaAngleX(0.0)
        , _radZ(0.0)
        , _radDeltaZ(0.0)
        , _radX(0.0)                        
        , _radDeltaX(0.0)        
    {}
    /**
     * @js NA
     * @lua NA
     */
    ~OrbitCamera(){}
    
    /** 使用 radius, delta-radius,  z, deltaZ, x, deltaX 初始化一个OrbitCamera action  */
    bool initWithDuration(float t, float radius, float deltaRadius, float angleZ, float deltaAngleZ, float angleX, float deltaAngleX);
    /** camera 在球面坐标系中的位置 */
    void sphericalRadius(float *r, float *zenith, float *azimuth);

    // Overrides
	OrbitCamera *clone() const override;
    virtual void startWithTarget(Node *target) override;
    virtual void update(float time) override;

protected:
    float _radius;
    float _deltaRadius;
    float _angleZ;
    float _deltaAngleZ;
    float _angleX;
    float _deltaAngleX;

    float _radZ;
    float _radDeltaZ;
    float _radX;
    float _radDeltaX;
};

// end of actions group
/// @}

NS_CC_END

#endif //__CCCAMERA_ACTION_H__