Copyright 1999 University of North Carolina at Chapel Hill.
All rights reserved.

Permission to use, copy, modify, and distribute this software and its
documentation for educational, research, and non-profit purposes, without fee,
and without a written agreement is hereby granted, provided that the above
copyright notice and the following three paragraphs appear in all copies.

IN NO EVENT SHALL THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL BE LIABLE TO
ANY PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES,
INCLUDING LOST PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS
DOCUMENTATION, EVEN IF THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL HAS
BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL SPECIFICALLY DISCLAIMS ANY
WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED
HEREUNDER IS ON AN "AS IS" BASIS, AND THE UNIVERSITY OF NORTH CAROLINA AT
CHAPEL HILL HAS NO OBLIGATIONS TO PROVIDE MAINTENANCE, SUPPORT, UPDATES,
ENHANCEMENTS, OR MODIFICATIONS.

The authors may be contacted via:  

US Mail:             Eric Larsen, Stefan Gottschalk
                      Department of Computer Science
                      Sitterson Hall, CB #3175
                      University of North Carolina
                      Chapel Hill, NC 27599-3175  

Phone:               (919) 962-1749 

Email:               geom@cs.unc.edu