Path: chuka.playstation.co.uk!chuka.playstation.co.uk!jdspugh.eecs.utas.edu.au!user
From: littledevil@trump.net.au (Richard Malka)
Newsgroups: scee.yaroze.programming.3d_graphics
Subject: Re: vertex access for collision detection
Date: Tue, 23 Sep 1997 15:35:29 +1000
Organization: Little Devil Software
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References: <littledevil-2009971857500001@jdspugh.eecs.utas.edu.au> <342612F5.36EB@interactive.sony.com>
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In article <342612F5.36EB@interactive.sony.com>, Developer Support
<dev_support@interactive.sony.com> wrote:

> 
> Use GSGetLw, all you need to do is supply the coordinate system your
> using and it will give you the transformation matrix from local
> coorinates to world coordinates. Then just use ApplyMatrix on your
> vertices to get there new positions.
> 
> Stuar

Thanks, I finally figured out that the above way was probably the way to
go. It's just a little disapointing (for efficiency) that the local to
world calculations need to be performed both for the GsSortObject function
and collision detection (i.e. duplicated).

Richard.