Path: utzoo!mnetor!uunet!husc6!mailrus!ames!hc!siegel
From: siegel@hc.DSPO.GOV (Josh Siegel)
Newsgroups: comp.graphics
Subject: Re: Lines intersecting with a triangle... (3D points)
Message-ID: <14214@hc.DSPO.GOV>
Date: 31 Mar 88 15:39:42 GMT
References: <14212@hc.DSPO.GOV> <1501@vaxb.calgary.UUCP>
Reply-To: siegel@hc.dspo.gov.UUCP (Josh Siegel)
Organization: Group E-10, Los Alamos National Laboratory, NM
Lines: 22

In article <1501@vaxb.calgary.UUCP> allan@calgary.UUCP (Jeff Allan) writes:
 >In article <14212@hc.DSPO.GOV>, siegel@hc.DSPO.GOV (Josh Siegel) writes:
 >> 
 >> When given a line, and three points that make up a triangle,
 >> how do I tell if the line intersects the triangle and where it
 >> intersects....
 >
 >The solution is to intersect the line with each line of the triangle
 >then check to see if the intersection points lie between the end-points
 >of the triangle. There are, however, a number of optional ways of doing 
 >things depending on your situation.
 >

Sorry if I waisted peoples time by not being specific... oh well..

I was talking 3D points and a three sided polygon (Ray tracing)...

Somebody get the flame thrower...

-- 
Josh Siegel		(siegel@hc.dspo.gov)
I like using a C-47A "puff dragon" to go hunting with.