def test_from_matrix(self):
r = Rotation([[1, 0, 0, 0], [3, 0, 0, 0], [0, 1, 0, 0], [0, 2, 0, 0]])
om = np.array(
[np.eye(3), np.eye(3), np.diag([1, -1, -1]), np.diag([1, -1, -1])]
)
assert np.allclose(Rotation.from_matrix(om).data, r.data)
assert np.allclose(
Rotation.from_matrix(om.reshape((2, 2, 3, 3))).data, r.reshape(2, 2).data
)
def test_from_to_matrix(self):
om = np.array(
[np.eye(3),
np.eye(3),
np.diag([1, -1, -1]),
np.diag([1, -1, -1])])
assert np.allclose(Rotation.from_matrix(om).to_matrix(), om)
def test_get_rotation_matrix_from_diffpy(self):
"""Checking that getting rotation matrices from diffpy.structure
works without issue.
"""
r = Rotation.from_matrix([i.R for i in sg225.symop_list])
assert not np.isnan(r.data).any()
def test_from_to_matrix2(self, e):
r = Rotation.from_euler(e.reshape((5, 2, 3)))
assert np.allclose(Rotation.from_matrix(r.to_matrix()).data, r.data)