normalize

Returns a new quaternion with the same direction as this quaternion but with a length (magnitude) of 1.0.

If this quaternion has a squared length less than 1e-12f (i.e., it is a zero or near-zero length quaternion), or if its components result in a non-finite squared length (NaN or Infinity), the original quaternion (this) is returned as it cannot be meaningfully normalized to a unit length.