sci The Computational Geometry Algorithms Library is a collaborative open source library containing: * the Kernel with geometric primitives such as points, vectors, lines, predicates for testing things such as relative positions of points, and operations such as intersections and distance calculation. * the Basic Library which is a collection of standard data structures and geometric algorithms, such as convex hull in 2D/3D, (Delaunay) triangulation in 2D/3D, planar map, polyhedron, smallest enclosing circle, and multidimensional query structures. * the Support Library which offers interfaces to other packages, e.g., for visualisation, and I/O, and other support facilities. Enable support for multiple recision interval arithmetic via sci-mathematics/mpfi