3D utilities
(c) onk, 1998-2001
A few low level & math utilities for 2D/3D computations as:
- area.py: solving close packing problems in 2D
- vect.py: low level / OO like matrix and vector calculation module
- vectools.py: more vector tools for intersection calculation, etc.
- tree.py: binary trees (used by the BSPtree module)