Orion's Standard Library routines (osl)
   Orion Sky Lawlor, olawlor@acm.org, 2005/1/27 (Public Domain)

Contents (by order of utility):
   osl/vector3d.h:  Nice C++ 3D vector class.

   osl/viewpoint: Camera projection matrix construction.

The dependencies are:
  viewpoint -> vector3d