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- Newsgroups: comp.graphics
- Path: sparky!uunet!usc!rpi!wrf
- From: wrf@ecse.rpi.edu (Wm Randolph Franklin)
- Subject: Re: Fast intersection DETECTION for convex polyhedra?
- Message-ID: <jqsx0dj@rpi.edu>
- Sender: wrf@speed.ecse.rpi.edu
- Nntp-Posting-Host: speed.ecse.rpi.edu
- Organization: Rensselaer Polytechnic Institute, Troy, NY
- References: <1992Jul9.134621.20715@fel.tno.nl>
- Date: Wed, 22 Jul 1992 22:32:46 GMT
- Lines: 19
-
-
- In article <1992Jul9.134621.20715@fel.tno.nl> on Thu, 9 Jul 92 13:46:21 GMT,
- rxkc2@fel.tno.nl (R. Kiel) writes:
-
- > For a real-time visualisation system I need an algorithm that will
- > tell me whether or not two convex polyhedra intersect.
-
- A separating plane for the two polyhedra exists iff they don't
- intersect. This can be formulated as a linear programming problem and
- solved. It should be reasonably fast.
-
- This method meets your req to determine the intersectability w/o finding
- the intersection, but it may be too complicated.
-
- A 2-D version of this might be mentioned somewhere in Preparata and
- Shamos.
- --
- Wm. Randolph Franklin, wrf@ecse.rpi.edu, (518) 276-6077; Fax: -6261
- ECSE Dept., 6026 JEC, Rensselaer Polytechnic Inst, Troy NY, 12180 USA
-