def test_reflect(self):
vector1 = Vector2d(1, 1)
vector2 = Vector2d(0, 1)
vector2.normalize()
vector1.reflect(vector2)
self.assertEqual(vector1.x, 1)
self.assertEqual(vector1.y, -1)
def test_sign(self):
vector1 = Vector2d(1, 1)
vector2 = Vector2d(2, 2)
vector3 = Vector2d(10, -2)
self.assertEqual(vector1.sign(vector2), 1)
self.assertEqual(vector1.sign(vector3), -1)
def test_distance(self):
vector1 = Vector2d(1, 1)
vector2 = Vector2d(1, 1)
vector3 = Vector2d(3, 3)
self.assertEqual(vector1.distance(vector2), 0)
self.assertEqual(vector1.distance(vector3), 2.8284271247461903)
def test_getReverse(self):
vector1 = Vector2d(1, 1)
rev = vector1.getReverse()
self.assertEqual(rev.x, -1)
self.assertEqual(rev.y, -1)
def test_truncate(self):
vector1 = Vector2d(0, 3)
vector1.truncate(2)
self.assertEqual(vector1.x, 0)
self.assertEqual(vector1.y, 2)
def test_distanceSq(self):
vector1 = Vector2d(1, 1)
vector2 = Vector2d(3, 3)
self.assertEqual(vector1.distanceSq(vector2), 8)
def test_zero(self):
vector = Vector2d(3, 4)
vector.zero()
self.assertEqual(vector.x, 0)
self.assertEqual(vector.y, 0)
def test_perp(self):
vector1 = Vector2d(1, 1)
perpendicular = vector1.perp()
self.assertEqual(perpendicular.x, -1)
self.assertEqual(perpendicular.y, 1)
def test_dot(self):
vector1 = Vector2d(4, 4)
vector2 = Vector2d(2, 2)
self.assertEqual(vector1.dot(vector2), 16)
def test_normalize(self):
vector1 = Vector2d(4, 4)
vector1.normalize()
self.assertEqual(vector1.x, 0.7071067811865475)
self.assertEqual(vector1.y, 0.7071067811865475)
def test_lengthSq(self):
vector1 = Vector2d(4, 4)
self.assertEqual(vector1.lengthSq(), 32)
def test_length(self):
vector1 = Vector2d(4, 4)
self.assertEqual(vector1.length(), 5.656854249492381)
def test_isZero(self):
vector1 = Vector2d(4, 4)
vector2 = Vector2d(0, 0)
self.assertFalse(vector1.isZero())
self.assertTrue(vector2.isZero())