Path: chuka.playstation.co.uk!news
From: "Mario Wynands" <mario@sidhe.co.nz>
Newsgroups: scee.yaroze.freetalk.english
Subject: Re: An adventure project
Date: Tue, 8 Jun 1999 23:17:32 +1200
Organization: PlayStation Net Yaroze (SCEE)
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Barry & Robert Swan <yaroze@theburrow.co.uk> wrote in message
news:3759079a.1869875@www.netyaroze-europe.com...
>
> Btw, the
> one graphical effect Im determined to do is to have the shadows of
> clouds passing over the landscape...

The way we did that in NViron for Dirty War (in case you don't have an idea
where to start) is to build procedural lighting into the overall game engine
lighting model.  The principle is pretty much the same as procedural
texturing except you are varying the level of light throughout 3D space
rather than the surface colour.  You should find a function which will
suitably simulate clouds if you check through some different procedural
texture alogrithms (the 'marble' variants will be a good place to start).
To get the effect of moving clouds or water caustics you just vary the
parameters over time.

If you need more help just email me.


Regards

Mario

mario@sidhe.co.nz
www.sidhe.co.nz