openvoronoi: changed filtering

[andyw]

Hi all,

Previously filters were applied to the voronoi-diagram with the slightly strange syntax:

vd = ovd.VoronoiDiagram()

# insert sites...

ovd.PolygonInterior( vd.getGraph(), True )

I thought this wasn't very intuitive, and it lead to boilerplate-wrappers in the filters. So I now changed this to:

vd = ovd.VoronoiDiagram()

# insert sites...

pi_filter = ovd.PolygonInterior( True )

vd.filter_graph(pi_filter)

Hopefully this is clearer & better. I changed most python example-scripts and cpp-examples so they work again.

Anders

PS. I've played around with some ideas for "HSM"-style pocketing path-generation. So stay tuned for the first ever (?) open-source HSM-pocketing path demonstration in the near future...