CGAL, the Computational Geometry Algorithms Library,библиотека С++ геометрических алгоритмов и структур данных
  8.2 MB|License: Other/Proprietary License

CGAL, the Computational Geometry Algorithms Library, is an Open Source C++ library of geometric algorithms and data structures. The goal of the CGAL Open Source Project is to provide easy access to efficient and reliable geometric algorithms in the form of a C++ library. CGAL is used in various areas needing geometric computation, such as: computer graphics, scientific visualization, computer aided design and modeling, geographic information systems, molecular biology, medical imaging, robotics and motion planning, mesh generation, numerical methods...

INSTALLATION:

Download the library.
Unpack it in the place where you wish to install it.
Run the script install_cgal -i.