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- Path: sparky!uunet!usna!dfr
- From: dfr@usna.navy.mil (PROF D. Rogers (EAS FAC))
- Newsgroups: comp.graphics
- Subject: Re: polyhedron/polyhedron intersection
- Keywords: 3d graphics, intersection
- Message-ID: <2372@usna.NAVY.MIL>
- Date: 11 Nov 92 15:51:44 GMT
- References: <1992Nov10.192804.13981@zip.eecs.umich.edu> <1992Nov11.002123.27579@kpc.com> <1992Nov11.135107.27052@sophia.smith.edu>
- Sender: news@usna.NAVY.MIL
- Organization: U. S. Naval Academy
- Lines: 14
-
- In article <1992Nov11.135107.27052@sophia.smith.edu> orourke@sophia.smith.edu (Joseph O'Rourke) writes:
- !In article <1992Nov11.002123.27579@kpc.com! hollasch@kpc.com (Steve Hollasch) writes:
- !! ... Trivial Reject ... Trivial Accept ...
- !! If neither of these tests succeed, then you must test each vertex of P
- !!to see if it lies within Q, and then you have to test each vertex of Q to
- !!determine if it lies within P.
- !
- ! These tests are not sufficient to detect intersection, as two
- !polyhedra may intersect without any vertex of one being inside the other.
-
- An example might help--either you or Ken Sloan.
-
- Dave Rogers
-
-