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Help: calculate framerate!

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Hi, sorry but this is my first post... :P Now, how i can calculate the framerate of my scene? What do you think about this routine?
CTime::ScanFramerate()
{
	TmCurrentTime=clock();

	TmFrames++;

	if (((TmCurrentTime-TmLastTime)*TmFrames)>=(1*CLOCKS_PER_SEC))
	{
		TmFramerate=TmFrames;

		TmFrames=0;
	}

	TmLastTime=TmCurrentTime;

	return 0;
}
I think it works but i don't know if it works really good or not...So i wait an answer... :) Tnx, bye! [Edited by - Zuck on February 13, 2005 6:11:23 AM]

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Uhm...Probabily this code is better than last one:

CTime::ScanFramerate()
{
TmCurrentTime=clock();

TmFrames++;

TmAcuDelay=TmAcuDelay+(TmCurrentTime-TmLastTime);

if (TmAcuDelay>=(1*CLOCKS_PER_SEC))
{
TmFramerate=TmFrames;

TmFrames=0;

TmAcuDelay=0;
}

TmLastTime=TmCurrentTime;

return 0;
}


Results are very different...With only a texturized sprite in a black screen, in the first case the framerate is about 100FPS and in the second one is about 500FPS...What is the right one?

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