Path: chuka.playstation.co.uk!news
From: "Craig Graham" <c_graham@hinge.mistral.co.uk>
Newsgroups: scee.yaroze.programming.2d_graphics
Subject: Re: Rotation property of sprites
Date: 7 Apr 1998 22:25:31 GMT
Organization: PlayStation Net Yaroze (SCEE)
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References: <352a3987.6501481@www.netyaroze-europe.com> <3529F85F.7EFC4AC3@micronetics.com> <352d67a9.2364597@www.netyaroze-europe.com> <352A755C.589EA5E7@codeworks.demon.co.uk>
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Jim <jim@codeworks.demon.co.uk> wrote in article
<352A755C.589EA5E7@codeworks.demon.co.uk>...
> David Wagner wrote:
> 
> > 
> > One question though, I thought 4096 = 1 degree for the rotation
> > property?
> > 
> 
> If you're looking at GsSPRITE I think it lost something in the
> translation, all the other functions use 4096 as a full circle, but its
> never been really made that clear.  

The GsSPRITE rotation defines ONE as 4096, and stores it in a long.
(360*4096 fits in a long).
Rotation in 3D uses 4096 as 360deg instead,  as the 3 axis rotation goes in
an
SVECTOR and  4096*360=1474560, which would overflow from a short....

> Jim

Craig.