Path: chuka.playstation.co.uk!news
From: Stuart_Ashley@Playstation.sony.com
Newsgroups: scee.yaroze.programming.3d_graphics
Subject: Object rotation
Date: 1 Sep 1997 11:19:42 GMT
Organization: PlayStation Net Yaroze (SCEE)
Lines: 26
Message-ID: <5ue8cg$2gk8@chuka.playstation.co.uk>
Reply-To: Stuart_Ashley@Playstation.sony.com
NNTP-Posting-Host: chuka.playstation.co.uk
Originator: news@chuka.playstation.co.uk

From: Stuart_Ashley@Playstation.sony.com
To: news@playstation.co.uk





>OK, next question... Is it correct in saying that rotating a
>PSX object will result in a rotation at the transformed position
>around the object's origin (0,0,0)? In other words is the transformation
>independant of the 3x3 scale, rotation info' and is applied last?
>If this is the case may I ask why?
>Does this mean I can only rotate (and scale) an object around the
>origin?
If I get this right you can't rotate about anything except the origin.
Hierachies
is the answer. Set up your rotation within a coordinate system that is a
translation. Then your rotation is about this new origin, but this origin
is
a translation from the WORLD origin.

Get that?

Stuart