Copy from a Matrix4x4

Copy from a Matrix3x3

Copy from a Matrix4x4

even better continuity than Hermite lerp, but slower

Count the number of '1' bits in a 32 bit word (from Steve Baker's Cute Code Collection)

Count the number of '1' bits in a 32 bit word (from Steve Baker's Cute Code Collection)

Even faster?

A callback to count leaf nodes

//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////