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Amiga Plus 1995 #5 & #6
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000273_owner-lightwave-l _Tue Jan 24 13:28:31 1995.msg
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From: alan.chan@oubbs.telecom.uoknor.edu
Message-ID: <9501241031.0ERZ600@oubbs.telecom.uoknor.edu>
Date: Tue, 24 Jan 95 10:31:07
Subject: TRACED REFRACTION
To: lightwave-l@netcom.com
Sender: owner-lightwave-l@netcom.com
Precedence: bulk
> I encountered another problem with the object inside of the sphere.
> I
> used 2 point polys to model the bristles of a broom. It looked
> excellent without traced refraction on the sphere. Tracing
> refraction
> caused the bristles to dissappear entirely. I haven't read about the
> inability of Lightwave to deal with points and 2 point polys inside
> of transparent refracted objects.
Raytracing is a volumetric system and therefore is unable to detect one and
two-point polygons. Refraction and reflection will not work with these polys.
I've had the same problem doing lake reflections of the night sky with one-poly
stars. My solution (which may not help in your case) was to render the sky as
an image sequence and then map it onto a plane to be reflected.
Alan Chan
Graphics/Animation Design
Vision Digital