Path: utzoo!mnetor!uunet!husc6!uwvax!ai!planting
From: planting@ai.WISC.EDU (Harry Plantinga)
Newsgroups: comp.graphics
Subject: Displaying a rotating object:  algorithmss?
Message-ID: <5227@spool.cs.wisc.edu>
Date: 11 Feb 88 23:03:32 GMT
References: <7328@fmsrl7.UUCP>
Sender: news@spool.cs.wisc.edu
Reply-To: planting@ai.WISC.EDU (Harry Plantinga)
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Organization: U of Wisconsin CS Dept
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Keywords: hidden line elimination, rotation

I'm interested in an algorithm for showing an object rotating on a
screen, or, equivalently, showing an object while the camera moves.
One obvious way of doing this is removing hidden lines and displaying
the object, changing the viewpoint a little bit, removing hidden lines
and displaying the object, and so on once for each frame.

Does anyone know of a more efficient algorithm, one perhaps that takes
advantage of the similarity from frame to frame>?

Harry Plantinga
planting@cs.wisc.edu
{allegra,ihnp4,seismo,heurikon}!speedy!planting