fps_counter.cpp

来自「it is a visual c++ file」· C++ 代码 · 共 30 行

//////////////////////////////////////////////////////////////////////////////////////////
//	FPS_COUNTER.cpp
//	functions to calculate frames per second
//	Downloaded from: www.paulsprojects.net
//	Created:	20th July 2002
//
//	Copyright (c) 2006, Paul Baker
//	Distributed under the New BSD Licence. (See accompanying file License.txt or copy at
//	http://www.paulsprojects.net/NewBSDLicense.txt)
//////////////////////////////////////////////////////////////////////////////////////////	
#include <windows.h>
#include "LOG.h"
#include "FPS_COUNTER.h"

extern LOG errorLog;

void FPS_COUNTER::Update(void)
{
	//keep track of time lapse and frame count
	time = timeGetTime()*0.001f;							//get current time in seconds
	++frames;												//increase frame count
		
	if(time-lastTime>1.0f)									//if it has been 1 second
	{
		fps		= frames/(time-lastTime);					//update fps number
		lastTime= time;										//set beginning count
		frames	= 0L;										//reset frames this second
	}
}