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Internet Message Format  |  1996-08-05  |  990 b 
  1. Path: news.edf.fr!newshost!schumm
  2. From: schumm@sdp13dj.der.edf.fr (andreas schumm)
  3. 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
  4. Subject: Re: 3d programming
  5. Date: 07 Feb 1996 09:13:50 GMT
  6. Organization: Direction des Etudes et Recherches EDF
  7. Message-ID: <SCHUMM.96Feb7101350@sdp13dj.der.edf.fr>
  8. References: <4f3od9$2jg@zeus.tcp.co.uk> <jderrick-0502961551360001@slip037.csc.cuhk.hk>
  9.     <3118310E.52F@psu.edu>
  10. NNTP-Posting-Host: sdp13dj.der.edf.fr
  11. In-reply-to: "Christopher H. Clark"'s message of Tue, 06 Feb 1996 23:56:46 -0500
  12.  
  13.  
  14. I have a more difficult problem: How to find the rays connecting
  15. two points, satisfying Snell's law at the interface(s) between the
  16. points. Any hints? I could figure it out for a plane or a sphere,
  17. but in the general case of say a tessellated triangularized 
  18. surface between the points? 
  19.  
  20.