Path: chuka.playstation.co.uk!scea!greg_labrec@interactive.sony.com
From: Manny Najera <mannyn@ix.netcom.com>
Newsgroups: scea.yaroze.programming.3d_graphics
Subject: Re: Clipping problem
Date: Mon, 23 Feb 1998 15:44:27 -0600
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Toby Hutton wrote:

> True, and if you're using flat shading, you should try using gouraud
> with fewer sides.  If you're inside the tube you could probably get
> away
> with under 12 and it'd still look fine with smooth shading.

The polygons I'm using now are flat shaded, 4-sided polygons with 16bit
textures.  I wanted to make them gouraud shaded, but I have no idea how
to calculate the 4 normals of each polygon (the TMD is made in the
program).

I understand that the surface normal is the cross product of the two
vectors on a polygon, but I don't understand why gouraud shaded polygons
need four of them.  Aren't they all the same?

Manny Najera