def test_angle(self):
"""
"""
v1 = Vector(1, 0, 0)
v2 = Vector(0, 1, 0)
self.assertTrue(abs(v1.get_angle(v2) - 90) < 10**-PRECISION)
v1 = Vector(1, 0, 0)
v2 = Vector(2, 0, 0)
self.assertTrue(abs(v1.get_angle(v2) - 0) < 10**-PRECISION)
v1 = Vector(1, 0, 0)
v2 = Vector(1, 1, 0)
self.assertTrue(abs(v1.get_angle(v2) - 45) < 10**-PRECISION)
a = Vector(0, 0, 0).get_angle((1, 1, 1))
self.assertEqual(a, None)
a = Vector(1, 1, 1).get_angle((0, 0, 0))
self.assertEqual(a, None)
def test___mul__2(self):
"""
"""
v1 = Vector(1, 2, 3)
v2 = Vector(4, 5, 6)
self.assertEqual(v1 * v2, 1 * 4 + 2 * 5 + 3 * 6)
self.assertEqual(
v1 * v2,
v1.magnitude * v2.magnitude * np.cos(np.radians(v1.get_angle(v2))))
def test___matmul__(self):
"""
"""
v1 = Vector(1, 2, 3)
v2 = Vector(4, 5, 6)
v = v1 @ v2
self.assertTrue(
abs(v.magnitude -
(v1.magnitude * v2.magnitude *
np.sin(np.radians(v1.get_angle(v2))))) < 10**-PRECISION)