def flip_facing_h(unit: UnitStruct) -> None:
"""Mirrors the unit's facing across a horizontal axis (math.pi / 4.0)."""
# Mods by tau because the scenario editor seems to place units facing
# at radian angles not strictly less than tau.
theta = get_facing(unit) % math.tau
phi = util.flip_angle_h(theta)
set_facing(unit, phi)
def test_flip_angle_h_8():
num_tests = 1000
for __ in range(num_tests):
theta = random.uniform(0.0, math.tau) % math.tau
double_flip = flip_angle_h(flip_angle_h(theta))
assert_almost_equal(theta, double_flip)
def test_flip_angle_h_7():
theta = 3.0 * math.pi / 2.0
phi = flip_angle_h(theta)
expected = math.pi
assert_almost_equal(expected, phi)
def test_flip_angle_h_5():
theta = 7.0 * math.pi / 4.0
phi = flip_angle_h(theta)
expected = 3.0 * math.pi / 4.0
assert_almost_equal(expected, phi)
def test_flip_angle_h_2():
theta = math.pi / 2.0
phi = flip_angle_h(theta)
expected = 0.0
assert_almost_equal(expected, phi)
def test_flip_angle_h_error1():
flip_angle_h(math.tau)
def test_flip_angle_h_error0():
flip_angle_h(-0.0000001)
