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#ifndef __UNITY_INPUT_TOUCHPHASEEMULATION_H
#define __UNITY_INPUT_TOUCHPHASEEMULATION_H
#include "Runtime/Math/Vector2.h"
#include "GetInput.h"
class TouchImpl;
class TouchPhaseEmulation
{
public:
TouchPhaseEmulation(float screenDPI, bool singleTouchDevice);
virtual ~TouchPhaseEmulation();
public:
void InitTouches();
void PreprocessTouches();
void PostprocessTouches();
enum TouchPhase
{
kTouchBegan = 0,
kTouchMoved = 1,
kTouchStationary = 2,
kTouchEnded = 3,
kTouchCanceled = 4
};
void AddTouchEvent (int pointerId, float x, float y, TouchPhase newPhase, long long timestamp);
size_t GetTouchCount();
size_t GetActiveTouchCount();
bool GetTouch(size_t index, Touch& touch);
bool IsMultiTouchEnabled ();
void SetMultiTouchEnabled (bool enabled);
private:
void DispatchTouchEvent (size_t pointerId, Vector2f pos, TouchPhase newPhase, long long timestamp, size_t currFrame);
bool IsExistingTouch( int pointerId );
enum { kMaxTouchCount = 32 };
size_t FindByPointerId(TouchImpl* matchingSlots[kMaxTouchCount], size_t pointerId);
TouchImpl* AllocateNew();
void ExpireOld(TouchImpl& touch);
int CompactFingerID(int id);
void FreeExpiredTouches (size_t eventFrame, long long timestamp);
void DiscardRedundantTouches();
void UpdateActiveTouches();
int CalculateTapCount( long long timestamp, Vector2f const &pos ) const;
#if DEBUG_TOUCH_EMU
void DumpAll (bool verbose=false);
#endif
TouchImpl* m_TouchSlots; //[kMaxTouchCount];
UInt32 m_AllocatedFingerIDs; // holds one bit per finger
size_t m_FrameCount;
const float m_ScreenDPI;
bool m_IsMultiTouchEnabled;
const bool m_IsSingleTouchDevice;
};
#endif // __UNITY_INPUT_TOUCHPHASEEMULATION_H
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