Function rotationTo

rotationTo<T>(aUnit, bUnit, dst?): T
Computes a quaternion to represent the shortest rotation from one vector to another.
Type Parameters
- T extends BaseArgType = number[]
Parameters
- aUnit: BaseArgType
  the start vector
- bUnit: BaseArgType
  the end vector
- Optional dst: T
  quaternion to hold result. If not passed in a new one is created.
Returns T
the result