[SciPy-Dev] PR 9556: Using convex hull centroids instead of tetrahedron circumcenters as Spherical Voronoi vertices

[Oliver Arend]

Hello everybody,

I started a pull request https://github.com/scipy/scipy/pull/9556 that
gives the user the ability to select a method to determine the
vertices of a Voronoi tesselation of a spherical surface. I also
expanded the tests accordingly. Someone more experienced should please
do a code review on it.

To see what that kind of difference (or not) it can make, look at e.g.
https://www.redblobgames.com/x/1842-delaunay-voronoi-sphere/#voronoi

I needed this functionality and found it easiest to just extend the
existing scipy.spatial.SphericalVoronoi class. Others might find it
useful as well.

Oliver