qhull: Qhull (Implements the Quickhull 3D algorithm)
qhull:
qhull: Qhull computes  the  convex  hull,  Delaunay   triangulation,  Voronoi
qhull: diagram, halfspace intersection  about a point, furthest-site Delaunay
qhull: triangulation, and furthest-site Voronoi diagram. The source code runs
qhull: in 2-d, 3-d, 4-d, and higher dimensions.
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