gltimer.h

实战粒子系统例程

/*
	gltimer.h - Timer handle
	Copyright (c) HalfLucifer, 2001.7.19
*/
/*	
    Modified: 2002.2.25 
*/

#ifndef __GLTIMERH__
#define __GLTIMERH__

#include <windows.h>

const float FPS_INTERVAL = 0.5;

class GLtimer
{

public:
	GLtimer();
	void Update();
	float GetFrameTime()	{ return m_FrameTime; }
	float GetDeltaTime()	{ return m_DeltaTime; }
	float GetFps()			{ return m_Fps; }

protected:
	float m_FrameTime;
	float m_OldTime;
	float m_DeltaTime;
	float m_Fps;
	int	  m_Frames;
	bool  m_PCounter;
	float m_Resolution; 
	union
	{
		LARGE_INTEGER m_QPCount;
		DWORD m_GTCount;
	};

};

#endif