Path: chuka.playstation.co.uk!scea!greg_labrec@interactive.sony.com
From: "Chris Furlough" <furlough@bellsouth.net>
Newsgroups: scee.yaroze.freetalk.english
Subject: Re: Collision detection
Date: 2 Jun 1997 18:15:50 GMT
Organization: SCEA Net Yaroze News
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> Does anybody out there know how to do collision detection within the
> geometry of a 3d model....much obliged for any advice.

If you are familiar with the bounding box technique of detecting collisions
of 2D sprites, it is a relatively short leap up to "Bounding Sphere" for
3D.

Otherwise, it works as follows (in theory).

You find the maximum width of your object(s), and build a sphere around
them that is you maximum width in diameter.  During the check, you just
check to see if they intersect on an object by object basis.  (I. E. see if
any vertex of an object is inside your sphere.  If so, you have collided!)

Hope this helps..  Got no example code handy, but plenty of theory..