Path: utzoo!attcan!uunet!aplcen!uakari.primate.wisc.edu!gem.mps.ohio-state.edu!tut.cis.ohio-state.edu!ucbvax!hplabs!hp-pcd!hpcvlx!bill
From: bill@hpcvlx.cv.hp.com (Bill Frolik)
Newsgroups: comp.graphics
Subject: Re: 3-D to 2-D projection
Message-ID: <101880014@hpcvlx.cv.hp.com>
Date: 20 Nov 89 17:11:13 GMT
References: <89322.172426SML108@PSUVM.BITNET>
Organization: Hewlett-Packard Co., Corvallis, OR, USA
Lines: 14


Can't you just add some constant offset to all your Z values
(analogous to taking a step or two back from the object you're
viewing)?  Or don't display anything that's got all negative
Z values associated with it (the object's behind you anyway);
for objects that extend from the positive Z region into the
negative Z region, just clip the negative Z value back to 
the position of the screen (probably Z=0; you only see that
portion of the object that lies in front of you).

________________________________________

Bill Frolik	Hewlett-Packard Co.
hp-pcd!bill	Corvallis, Oregon