See section 8.5 of http://www.cis.upenn.edu/~cis610/convex8.pdf http://www.cis.upenn.edu/~cis610/convex8.pdf for the analysis showing that the stereographic pro

See section 8.5 of http://www.cis.upenn.edu/~cis610/convex8.pdf http://www.cis.upenn.edu/~cis610/convex8.pdf for the analysis showing that the stereographic projection is the projection that preserves the properties needed for Delaunay triangulation. I learned this technique from Philippe Riviere, who uses it in the d3-geo-voronoi library - https://beta.observablehq.com/collection/@fil/voronoi https://beta.observablehq.com/collection/@fil/voronoi