Re: Perspective

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#26

From: Kurt Akeley
Date: Wed, 30 Dec 1992 18:19

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-- 

I believe this is how the perspective matrix is computed:

	cot(fov/2)
	----------	0	0	0
	 aspect


	    0	    cot(fov/2)	0	0


			    near+far
	    0		0   --------	-1
			    near-far


			    2.far.near
	    0		0   ----------	0
			     near-far


Clipping is then done to:

	-w < x < w
	-w < y < w
	-w < z < w

-- Kurt Akeley	    kurt@sgi.com  (415) 390-3612  M/S 7U-550

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Path: arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!sgiblab!sgigate!sgi!fido!cashew.asd.sgi.com!kurt
From: kurt@cashew.asd.sgi.com (Kurt Akeley)
Newsgroups: comp.sys.sgi.graphics
Subject: Re: Perspective
Date: 30 Dec 1992 18:19:11 GMT
Organization: Silicon Graphics, Inc.
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