TODO

Quaternion
Add 'difference'
Add log
Add squad


Add more maths functions from here
http://vvvv.org/documentation/3d-vector-mathematics

array_index: make this take an N long array and calculate the index dynamically.
collision: complete collision detection algs
sphere / plane
point / frustrum
sphere / box
sphere / sphere
sphere / triangle
sphere / N triangles
box / plane
box / frustrum
box / box
box / triangle
box / N triangles
point / sphere
point / box
point / plane
point / frustrum
point / point
point / triangle
point / N triangles
triangle / triangle
triangle / plane
triangle / frustrum
triangle / N triangles

Interpolate:
move vector.interpolate into here
rename to linear
add sin_interpolate
etc