Polygon eases the handling of 2D-polygons including very fast clipping operations
Polygon is a python package for easy handling of polygons in 2D. It contains Python bindings for gpc, the excellent General Polygon Clipping Library by Alan Murta and some extensions written in C and pure Python. With Polygon you may handle complex polygonal areas in Python in a very intuitive way. Polygons are simple Python objects, clipping operations are bound to standard operators like +, -, |, & and ^. TriStrips can be constructed from Polygons with a single statement. Functions to compute the area, center point, convex hull and much more are included.
The gpc homepage is located at http://www.cs.man.ac.uk/~toby/alan/software/ .
The wrapping and extension code is free software, but the core gpc library is free for non-commercial usage only. The author says:
GPC is free for non-commercial use only. We invite non-commercial users to make a voluntary donation towards the upkeep of GPC.
If you wish to use GPC in support of a commercial product, you must obtain an official GPC Commercial Use Licence from The University of Manchester.
Please respect this statement and contact the author (see gpc homepage) if you wish to use this software in commercial projects!