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Article #122

Postscript for perspective views of simple 3-D objects

#122
From: Eric Henry
Date: Tue, 03 Nov 1992 13:58
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I am interested in whether anybody has come up with a way (C program or
Postscript code) to produce a Postscript description of any specified view of
a collection of simple 3-D objects.  The kind of thing I have in mind is, for
example, a set of (possibly intersecting) spheres of different sizes to
represent the atoms in a molecule, or alternative representation of the same
system using a set of spheres connected by cylindrical rods to represent
chemical bonds.  I don't care (yet) about color or shading, I just need a way
to draw the outlines of all objects (and their intersections) as seen from a
specified point in space (and probably projected onto a specified view plane).
The big problems are (I think) the removal of hidden outlines and the 
identification and drawing of curves of intersection.  Any insight via E-mail
or post would be appreciated.

Eric Henry
eric@helix.nih.gov
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Message-ID: <1992Nov3.135818.10709@alw.nih.gov>
Path: arc1-ca.pugleaf.net!sparky!uunet!nih-csl.dcrt.nih.gov!postman

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Newsgroups: comp.lang.postscript
Path: arc1-ca.pugleaf.net!sparky!uunet!nih-csl.dcrt.nih.gov!postman
From: eric@helix.nih.gov (Eric Henry)
Subject: Postscript for perspective views of simple 3-D objects
Message-ID: <1992Nov3.135818.10709@alw.nih.gov>
Sender: postman@alw.nih.gov (AMDS Postmaster)
Organization: National Institutes of Health, Bethesda
Date: Tue, 3 Nov 1992 13:58:18 GMT
Lines: 16