axmol/cocos/2d/CCTouch.h

/****************************************************************************
Copyright (c) 2010-2012 cocos2d-x.org
Copyright (c) 2013-2014 Chukong Technologies Inc.

http://www.cocos2d-x.org

Permission is hereby granted, free of charge, to any person obtaining a copy
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#ifndef __CC_TOUCH_H__
#define __CC_TOUCH_H__

#include "base/CCRef.h"
#include "base/CCGeometry.h"

NS_CC_BEGIN

/**
 * @addtogroup input
 * @{
 */

class CC_DLL Touch : public Ref
{
public:
    /** how the touches are dispathced */
    enum class DispatchMode {
        /** All at once */
        ALL_AT_ONCE,
        /** one by one */
        ONE_BY_ONE,
    };

    Touch() 
        : _id(0),
        _startPointCaptured(false)
    {}

    /** returns the current touch location in OpenGL coordinates */
    Vector2 getLocation() const;
    /** returns the previous touch location in OpenGL coordinates */
    Vector2 getPreviousLocation() const;
    /** returns the start touch location in OpenGL coordinates */
    Vector2 getStartLocation() const;
    /** returns the delta of 2 current touches locations in screen coordinates */
    Vector2 getDelta() const;
    /** returns the current touch location in screen coordinates */
    Vector2 getLocationInView() const;
    /** returns the previous touch location in screen coordinates */
    Vector2 getPreviousLocationInView() const;
    /** returns the start touch location in screen coordinates */
    Vector2 getStartLocationInView() const;
    
    void setTouchInfo(int id, float x, float y)
    {
        _id = id;
        _prevPoint = _point;
        _point.x   = x;
        _point.y   = y;
        if (!_startPointCaptured)
        {
            _startPoint = _point;
            _startPointCaptured = true;
        }
    }
    /**
     * @js getId
     * @lua getId
     */
    int getID() const
    {
        return _id;
    }

private:
    int _id;
    bool _startPointCaptured;
    Vector2 _startPoint;
    Vector2 _point;
    Vector2 _prevPoint;
};

// end of input group
/// @}

NS_CC_END

#endif  // __PLATFORM_TOUCH_H__