Path: chuka.playstation.co.uk!news
From: Alex Herbert <aherbert@ndirect.co.uk>
Newsgroups: scee.yaroze.programming.3d_graphics
Subject: Perspective projection
Date: Mon, 13 Jul 1998 16:39:35 +0000
Organization: PlayStation Net Yaroze (SCEE)
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Christoph Luerig wrote:

> What brings me up to the next question: Up to now I assumed (but I did
>
> not find it anywhere explicitely), that the z-values used for the
>
> ordering tables are the ones used after the application of the LS matrix
>
> but before the application of the perspective projection, is that correct
>
> (it would be relevant for stability aspects)?
>
> Christoph
>
Forgive me if I'm wrong, but I'm sure that this has to be correct.
Surely the perspective projection converts 3D coodinates into 2D
coordinates and therefore there is no z-axis once projection has been
performed.

Herbs