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From: gyuri@cvl.umd.edu (Dr. Gyorgy Fekete)
Newsgroups: comp.graphics
Subject: Re: Tesselating the sphere
Summary: Sphere quadtree implementation of arbitrarily fine
	 recursive subdivision of an icosahedron
Message-ID: <4352@cvl.umd.edu>
Date: 26 Feb 90 21:41:38 GMT
References: <155@tacitus.tfic.bc.ca> <77100013@p.cs.uiuc.edu>
Organization: Center for Automation Research, Univ. of Md.
Lines: 19

I gave a paper on February 16th at the SPSE/SPIE Symposium on Electronic
Imaging Science and Technology titled "Sphere quadtrees: a data structure
to support the visualization of spherically distributed data".
It discusses the quadtree based management of spherical data with
an introduction of some algorithms for topological operations on
trixels (small spherical triangles).
I would be happy to send a hardcopy of the paper as it appears in the
proceedings to anyone who asks. Unfortunately, the paper is
rather short (there was a 12 page limit), and is not a full discussion
of all the things that we have done, but there is enough there to motivate
further discussion. Another paper is in the making. I will also e-mail 
the extended abstract (circa 300 words) to those who ask.
Please e-mail to "gyuri@ncgl.gsfc.nasa.gov" or US-mail to (in case .signature
falls off the end)

	Gyorgy Fekete
	NSSDC/Goddard Space Flight Center
	Code 634
	Greenbelt, MD 20771