Re: 3d programming

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#26

From: Chris Ryder
Date: Thu, 08 Feb 1996 06:59

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schumm@sdp13dj.der.edf.fr (andreas schumm) wrote:
>
>I have a more difficult problem: How to find the rays connecting
>two points, satisfying Snell's law at the interface(s) between the
>points. Any hints? I could figure it out for a plane or a sphere,
>but in the general case of say a tessellated triangularized 
>surface between the points? 
>

This is a real pain - there's no quick and easy way.  As you say,
spheres are simple - hence you see them a lot in ray-traced drawings.
My suggestion is to consult a decent maths book.

Good luck,

ChrisR:

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Path: arc1-ca.pugleaf.net!erinews.ericsson.se!eritel!usenet
From: Chris Ryder <ryder@eritel.se>
Newsgroups: comp.lang.pascal.borland,comp.lang.pascal.mac,comp.lang.pascal.ansi-iso,comp.lang.pascal.misc,comp.sys.amiga.programmer,comp.graphics.algorithms,comp.os.ms-windows.programmer.graphics,comp.sys.amiga.graphics
Subject: Re: 3d programming
Date: 8 Feb 1996 06:59:41 GMT
Organization: Eritel AB
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