> The "numerical methods package for Squeak" reference reminds me of this 
> rather recent proposal here:
> http://forum.world.st/Proposal-Geometry-Classes-td5093998.html

FWIW I have implemented several computational geometry algorithms and 
data structures for my current game.

Doubly-connected edges list, Voronoi tesselations (with the non-trivial 
and very fast Fortune's algorithm), Polygon, Graphs (and A*/Djikstra), a 
couple more stuff


Stef