Conjugate of quaternion.
The conjugate of a unit quaternion inverts the rotation represented by this unit quaternion. The conjugate of a quaternion q is often denoted as q*.
- qarray-like, shape (4,)
Unit quaternion to represent rotation: (w, x, y, z)
- q_carray-like, shape (4,)
Conjugate (w, -x, -y, -z)