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From: airey@unc.cs.unc.edu (John Airey)
Newsgroups: comp.graphics
Subject: Re: Point inside of polygon revisited... A NEW APPROACH
Message-ID: <697@unc.cs.unc.edu>
Date: Fri, 26-Jun-87 14:06:10 EDT
Article-I.D.: unc.697
Posted: Fri Jun 26 14:06:10 1987
Date-Received: Sat, 27-Jun-87 09:43:27 EDT
References: <948@elrond.CalComp.COM> <790@thumper.UUCP> <284@louie.udel.EDU> <859@pixar.UUCP>
Reply-To: airey@unc.UUCP (John Airey)
Organization: University of North Carolina, Chapel Hill
Lines: 6
Keywords: ray tracing, graphics, polygon intersection

Paul Heckbert says use two-d solutions for three-d polygons by
choosing the largest projection onto the xy,yz,xz planes.
The largest projection may be determined by finding the component of the
normal to the poly with largest abs val and projecting onto
the "other" plane. i.e. if z normal component largest, project to xy.
sorry, I had to put in my 2 cents.