A position/vector transformation library, making it easy to manipulate 3D coordinate systems. Vectors can be in Cartesian, Spherical, or Cylindrical format, and the library includes matrix utilities for efficient mass-transformation.
This is stated in the class itself, but just to be very clear, the Pos3d class (and that class alone) is currently poorly tested and its advanced methods may or may not work at all.
If you find a bug, please report it if it's not already been reported. This issue is just a warning to users, rather than a statement of omniscience.
This is the class where the vertical axis is Z, and Y is a horizontal axis. The Alt3d class is the one with a vertical Y-axis and horizontal Z-axis.