Polygon Question...

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#409

From: morley
Date: Tue, 21 Jul 1992 17:48

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Hi!

Ok, this should be an easy one...  Given 3 X,Y points that form a triangle,
what is the simplest (fastest) way to determine if they are clock-wise or
counter-clock-wise?  I'm not interested in general polygons of N points,
just plain old triangles.  Yes, this is for use in a graphics app.

Thanks...

MARK
morley@camins.camosun.bc.ca

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Path: arc1-ca.pugleaf.net!sparky!uunet!darwin.sura.net!mips!sdd.hp.com!usc!sol.ctr.columbia.edu!destroyer!ubc-cs!news.UVic.CA!spang.Camosun.BC.CA!camins.camosun.bc.ca!morley
From: morley@camins.camosun.bc.ca
Subject: Polygon Question...
Message-ID: <1992Jul21.094844.1@camins.camosun.bc.ca>
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Date: Tue, 21 Jul 1992 17:48:44 GMT