Invert this quaternion and {@link #normalize() normalize} it. <p> If this quaternion is already normalized, then {@link #conjugate()} should be used instead.
@see #conjugate()
@return this
See Implementation
Invert this quaternion and {@link #normalize() normalize} it. <p> If this quaternion is already normalized, then {@link #conjugate()} should be used instead.
@see #conjugate()
@return this