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- Newsgroups: comp.graphics
- Path: sparky!uunet!gatech!destroyer!cs.ubc.ca!unixg.ubc.ca!kakwa.ucs.ualberta.ca!alberta!pierre
- From: pierre@cs.UAlberta.CA (Pierre Honeyman)
- Subject: Re: PoV question: Is there a way to render shadows but not objects?
- Message-ID: <pierre.727648742@manning>
- Sender: news@cs.UAlberta.CA (News Administrator)
- Nntp-Posting-Host: manning.cs.ualberta.ca
- Organization: University of Alberta, Edmonton, Canada
- References: <1j761gINN8ps@topper.ksu.ksu.edu> <1993Jan16.160403.21036@exucom.com> <107404@bu.edu>
- Date: Thu, 21 Jan 1993 20:39:02 GMT
- Lines: 24
-
- kiki@csa.bu.edu (Keith Baccki) writes:
-
- >In article <1993Jan16.160403.21036@exucom.com> cyberman@exucom.com (Stephen R. Phillips) writes:
- >>
- >>
- >>John David Regehr (jregehr@topper.ksu.ksu.edu) wrote:
- >>
- >>: I am working on raytracing groups of plants, and I would like to make
- >>: images of just the shadows cast by the plants - sort of the
- >opposite of
-
- >>You could make each sphere black.
- >
- > This isn't what he meant. Actually it's an interesting
- >proposition, here's what I thought of:
-
- > Yes, you can do what you want by changing the heart
- >of the raytracer. Basically what you want is to cast rays into the
-
- ....or you could just look at the shadows.
-
- [...lots of shit deleted...]
-
- Pierre
-