ART/ARCHITECTURE. Object Related Geometry Software.

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To: Howard Lawrence <[email protected]>
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Subj: IRIS Geometry software

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From: Gary Murphy <[email protected]x>
Subject: IRIS Geometry software
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From: [email protected] (Geometry Center Software Development Group)
Newsgroups: comp.archives
Subject: [comp.graphics] Geomview is available --- 3D object viewer
Date: 23 Jun 92 10:53:58 GMT
Followup-To: comp.graphics,comp.graphics.visualization,comp.sys.sgi,sci.math
Organization: Geometry Center
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Archive-name: auto/comp.graphics/Geomview-is-available-3D-object-viewer


The Geometry Center announces release 1.1 of geomview, a program for
looking at and interactively manipulating 3D objects. The current
version runs on Silicon Graphics IRIS workstations. It is available
via anonymous ftp at geom.umn.edu (128.101.25.31) in the "pub/geomview"
subdirectory. "geomview-bin.tar.Z" contains pre-compiled binaries,
documentation, and data and takes up 3 MB of disk space. The source
distribution is "geomview.tar.Z" and takes up 21 MB of disk space. To
unpack, type "uncompress < [geomview|geomview-bin].tar.Z | tar xvopf -".

Please send all correspondence regarding this software via email to
"[email protected]".

Geomview represents the current state of an ongoing effort at the
Geometry Center to provide interactive 3D graphics software which is
particularly appropriate for displaying the kinds of objects and doing
the kinds of operations of interest in mathematics research and
education. While geomview was developed as a tool for research
mathematicians, it is a general-purpose graphics system which could be
useful in many domains. It can be used to examine a static object or
as a dynamic display for a running program. An extensive command
language allows programmers to easily extend the functionality of the
basic viewer by writing external modules. Currently hyperbolic
visualization capabilities are built-in, while four-dimensional
visualization is handled through external modules.

Geomview allows multiple independently controllable objects and
cameras. Interactive control for motion, appearances (including
lighting, shading, and materials), picking on an object, edge or
vertex level, and adding or deleting objects is provided through
direct mouse manipulation, control panels, and keyboard shortcuts.
External programs can drive desired aspects of the viewer (such as
continually loading changing geometry or controlling the motion of
certain objects) while allowing interactive control of everything
else.

Geomview supports the following simple data types: polyhedra with
shared vertices (.off), quadrilaterals, rectangular meshes, vectors,
and Bezier surface patches of arbitrary degree including rational
patches. Object hierarchies can be constructed with lists of objects
and instances of object(s) transformed by one or many 4x4 matrices.
Arbitrary portions of changing hierarchies may be transmitted by
creating named references.

The Geometry Center is an NSF-funded independent research group based
at the University of Minnesota. The three-fold mission of the Center
is to support and promote mathematics and computer science research;
software, animation, and tool dvelopment and production; education and
communication of mathematics at all levels. The Geometry Center's
offical name is the "National Science and Technology Research Center
for Computation and Visualization of Geometry Structures".

The Geometry Center
University of Minnesota
1300 S. 2nd St.
Minneapolis, MN 55454 USA
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