If anyone is interested, I have already completed a library for the math that a geometry library would require for my game engine. It supports the following types, along with all of the most commonly used operations that they should naturally support: vector<Type, Dim>; matrix<Type, Rows, Columns>; quaternion<Type>; Implementing quaternions generically required the development of generic algorithms to compute sine and cosine, which I have also completed and tested. To access elements of a vector one uses the [] operator with a numeric index. 0-3 have the aliases _x, _y, _z, and _w, so one could do the following: vector<float, 4> v; v[_x] = 42; v[_y] = -13; v[_z] = 3.14f; v[_w] = 1; Matrix multiplication, being templated, allows attempted multiplication of incompatible matrices to be detected as a compile time error. The code has been uploaded to the boost vault (http://boost-consulting.com/vault, geometry_math.zip). It is not in the form of a boost library per say (it uses my engine's namespace instead of the boost namespace), but if there is interest I would be willing to do the conversion and donate it to the project. I additionally would be willing to donate any relevant code that I used in implementing my software rasterizer which was built on this (for example functions to generate transformation matrices, including projections, or functions for working with colors, etc...) -Jason Hise