Path: chuka.playstation.co.uk!scea!peter_alau@playstation.sony.com
From: jamin1@psu.edu (Jamin Frederick)
Newsgroups: scee.yaroze.programming.3d_graphics
Subject: Re: fixed point
Date: Mon, 20 Jul 1998 21:35:59 GMT
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I guess I meant, more specifically, with 3D stuff.  I know it is used
for specifying degees of rotation for sprites and models, and scale
for sprites.  

Jamin 

On Wed, 15 Jul 1998 18:19:13 +0000, Alex Herbert
<aherbert@ndirect.co.uk> wrote:

>
>
>Jamin Frederick wrote:
>
>> Where is fixed point used?  Is it only for normals?
>>
>
>Fixed point is used all over the place, especially with rotation
>matrices.  The Library Reference does indicate where fixed point is
>used, but it is not clear initially.  You may have noticed sets of
>numbers it brackets e.g. (1,3,12).  This indicates 1 sign bit, 3 whole
>bits, and 12 fractional bits.
>
>Does this help?
>
>Herbs
>
>