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From: gleicher@CS.CMU.EDU (Michael Gleicher)
Newsgroups: comp.sys.sgi
Subject: World Coordinates -> Screen Coordinates
Message-ID: <GLEICHER.90Nov6001706@OREO.GRAPHICS.CS.CMU.EDU>
Date: 6 Nov 90 05:17:06 GMT
Sender: gleicher@OREO.GRAPHICS.CS.CMU.EDU
Distribution: comp
Organization: School of Computer Science, Carnegie Mellon University
Lines: 12


Does anyone have an easy way to get from worldspace co-ords to screen co-ords?
(basically do a mapw2 in reverse).
I need to do this to use the select routines.

I should be able to grab the matrix off the stack and run my point through it,
although, although I remember reading somewhere that there was an extra trick
to really making it work.

I appreciate the help.

	Mike