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- Path: sparky!uunet!spool.mu.edu!yale.edu!newsserver.jvnc.net!netnews.upenn.edu!gradient.cis.upenn.edu!jnimerof
- From: jnimerof@gradient.cis.upenn.edu (Jeff Nimeroff)
- Newsgroups: comp.graphics
- Subject: Re: PoV question: Is there a way to render shadows but not objects?
- Summary: Ray tracing shadows
- Keywords: shadow tracing
- Message-ID: <106069@netnews.upenn.edu>
- Date: 21 Jan 93 21:55:15 GMT
- References: <1993Jan16.160403.21036@exucom.com> <107404@bu.edu> <pierre.727648742@manning>
- Sender: news@netnews.upenn.edu
- Organization: University of Pennsylvania
- Lines: 14
- Nntp-Posting-Host: gradient.cis.upenn.edu
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- For each eye ray, fire into the scene. If it doesn't intersect the scene
- color a background color, non-black.
- If an object is hit, fire shadow feelers at the light source. If there is
- an occlusion, color that point on the surface (its pixel in screen space)
- as black.
-
- I think this would work...
-
- Jeffry Nimeroff
- Computer Graphics Research Laboratory
- Computer and Information Science
- University of Pennsylvania
- Ph.D. 1993
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