The Computational Geometry Algorithms Library CGAL is the largest and most influential collection of algorithms and data structures for geometric computing that is available today. It started off in 1996 as a European research project with a small number of partners. Over the last ten years, it has grown tremendously, now being a major open source project with a lot of infrastructure (see www.cgal.org). Contributors come from the original partner sites, from sites involved in subsequent research projects, but increasingly also from many other sites worldwide.
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