Path: utzoo!yunexus!ists!jarvis.csri.toronto.edu!mailrus!cs.utexas.edu!samsung!brutus.cs.uiuc.edu!psuvax1!psuvm!sml108 From: SML108@PSUVM.BITNET Newsgroups: comp.graphics Subject: 3-D to 2-D projection Message-ID: <89322.172426SML108@PSUVM.BITNET> Date: 18 Nov 89 22:24:26 GMT Article-I.D.: PSUVM.89322.172426SML108 Organization: Penn State University Lines: 5 Hi, does anyone out there know of a 3-D to 2-D projection equation which does not have the effect of inverting coordinates when given a -Z coordinate such as the equation x(2D)=x(3d)/z(3D)*z(viewpoint) does ? Scott Le Grand aka SML108