Path: chuka.playstation.co.uk!news
From: Kev <kevtoast@geocities.com>
Newsgroups: scee.yaroze.programming.libraries
Subject: Re: FP calculation speed.
Date: Thu, 17 Apr 1997 13:18:29 +0100
Organization: PlayStation Net Yaroze (SCEE)
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Chris Allmark wrote:
> Does the use of functions such as SIN(), COS() etc. have a dramatic effect
> on speed. I am messing arround with a sprite routine which performs
> 1000xSIN() and 1000xCOS() calculations for each of 1000 sprites during the
> GsSortSprite() bit and I seem to be achieving around 1 frame per second
> (wow.). I disabled the SIN & COS calcs and it flew. I am goind to
> pre-calculate the data into an array - but should I have to do that ?

Yep! It's pretty standard (or *very* standard) in 3D graphics to 
precalculate sin/cos and other tables for speed purposes.

Kev.
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