How to make it: Produced by ray tracing software written by Pat Hanrahan (Princeton) and Don Mitchell (AT&T). Their software uses Fermat's principle to find reflections from an implicitly-defined surface.
Image created: Dec. 1991
Copyright © Dec. 1991 by The Geometry Center, Univerity of Minnesota. All rights reserved.
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Created: Sat May 22 23:17:45 CDT 1999 --- Last modified: Sat May 22 23:17:45 CDT 1999