Path: chuka.playstation.co.uk!news
From: "Jon Prestidge  (Jon@surfed.to)" <jon@surfed.to>
Newsgroups: scee.yaroze.freetalk.english
Subject: Re: psx units
Date: Sun, 10 Jun 2001 01:27:01 +0100
Organization: PlayStation Net Yaroze (SCEE)
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> but i'm guessing the psx units are just some
> arbitrary units the GPU uses.

...yes, as far as I know the PlayStation just uses units ... and the units
can be whatever you want.  Obviously you've got limitations as to what you
can make the units since any co-ordinates you store as TMD data or as
positions of the models in your 3D world, are limited to signed word and
signed long word values respectively.   Eg. if your units were microns and
you were making a big city scape, then you quickly run into integer overflow
problems... but if you used centimetres you'd probably be OK

Jon