Hi all, I've been doing some work for the past few weeks on a generative/generic 2D geometry library (leaving open the possibility for 3D in the future). The idea is for all the algorithms to be generative taking coordinate, point, segment, polyline/gon types as template parameters (or deducing where presented as nested typedefs) and specialized traits types for accessing type traits and methods ( things like access_traits<point_type>::get_x( point ) .). So far the library has allowed me to work with the same algorithms in native floating type and exact types like gmp's mpq_class. It's just a first rough draft of ideas, and I would really like some input from the community to see if I'm on the right track for something that boost would be interested in having. I'll post a copy of the lib in the vault. It's header only (with a small testbed with trivial testing and a visual studio 2008 solution/project). I hope there should not be too many issues compiling these tests/headers under other platforms. I'll put it in the vault as generative_geometry_algorithms.zip link: http://www.boostpro.com/vault/index.php?action=downloadfile&filename=generative_geometry_algorithms.zip&directory=Math%20-%20Geometry& Thanks for any constructive input. With regards, Brandon Kohn