random_sample_rotation problem

[Jianqiuer]

Thanks for your nice work. What is the meaning of the random_sample_rotation function performing the np.linalg.norm(axis) operation?
`
def random_sample_rotation_v2() -> np.ndarray:
axis = np.random.rand(3) - 0.5
axis = axis / np.linalg.norm(axis) + 1e-8
theta = np.pi * np.random.rand()
euler = axis * theta
rotation = Rotation.from_euler('zyx', euler).as_matrix()
return rotation

`