libqhull: libqhull 2012.1 (Convex hull library)  
libqhull:  
libqhull: Qhull computes the convex hull, Delaunay triangulation, Voronoi 
libqhull: diagram, halfspace intersection about a point, furthest-site 
libqhull: Delaunay triangulation, and furthest-site Voronoi diagram. The 
libqhull: source code runs in 2-d, 3-d, 4-d, and higher dimensions. Qhull 
libqhull: implements the Quickhull algorithm for computing the convex hull. It 
libqhull: handles roundoff errors from floating point arithmetic. It computes 
libqhull: volumes, surface areas, and approximations to the convex hull.  
libqhull: 
libqhull: http://www.qhull.org/ 

