def test_rotations_to_static_yz(self, sample_system):
""" We rotate from z towards y, and compare the results to geometry"""
r_to_yz = get_rotation_from_z_to_direction(sample_system, [0, 1, 1])
tan_angle = np.tan(np.deg2rad(r_to_yz[1]))
tan_lattice = sample_system.lattice.b / sample_system.lattice.c
assert np.allclose(tan_angle, tan_lattice, atol=1e-5)
def test_rotation_to__static_x_axis(self, sample_system):
r_to_x = get_rotation_from_z_to_direction(sample_system, [1, 0, 0])
assert np.allclose(r_to_x, (90, 90, -90))
def test_rotation_to_static_y_axis(self, sample_system):
r_to_y = get_rotation_from_z_to_direction(sample_system, [0, 1, 0])
assert np.allclose(r_to_y, (180, 90, -180))
def test_zero_rotation_cases(default_structure):
r_test = get_rotation_from_z_to_direction(default_structure, [0, 0, 2])
r_test_zero = get_rotation_from_z_to_direction(default_structure,
[0, 0, 0])
assert r_test == (0, 0, 0)
assert r_test_zero == (0, 0, 0)