devel/libgpc 2.32_1 DragonFly

An algorithm for calculating the difference, intersection, exclusive-or or union of arbitrary polygon sets.

Copyright: (C) 1997-2004, Advanced Interfaces Group, University of Manchester.

This software is free for non-commercial use. It may be copied,
modified, and redistributed provided that this copyright notice
is preserved on all copies. The intellectual property rights of
the algorithms used reside with the University of Manchester
Advanced Interfaces Group.

You may not use this software, in whole or in part, in support
of any commercial product without the express consent of the
author.

Software documentation at