Path: chuka.playstation.co.uk!news
From: Craig Graham <c_graham@hinge.mistral.co.uk>
Newsgroups: scee.yaroze.programming.3d_graphics
Subject: Re: Poly Intersections
Date: Mon, 04 Jan 1999 09:28:58 +0000
Organization: PlayStation Net Yaroze (SCEE)
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References: <3689671E.AA01BBAB@hinge.mistral.co.uk> <na.add1e948be.a701a0rfredw@argonet.co.uk>
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R Fred Williams wrote:

>  OK, to save you looking it up (I started doing 3d code 10 years after
> learning this o-level maths stuff, and having to re-learn all the bits
> I'd forgotten was a major pain ;)

Reckon everyone thinks that.


> Definition of 3*3 matrix-determinants:-

<Snip - useful determinents stuff gets cut>

So, that's how you convert the coplaner points to the plane equation
- did it in A level math, forgot it 10 years later, thanks for the reminder.


>   Fred

Good stuff - hope everyone was paying attention...there must be some uses
for it in-game (although I'm only using it in RsdANIM to do CGS ops)
eg. a sword that really cuts, accurate hit detection with a laser or bullet
(better than
bounding box), etc.

Craig.