def test_multiple_application(self):
p = Point(10, 10)
m = AffineTransformation()
m.translate(Point(6, 5))
m.scale(1.5, 2)
p.transform(m)
self.assertEqual(p.x, 24)
self.assertEqual(p.y, 30)
def test_scale(self):
p = Point(4, 5)
m = AffineTransformation.scaling(2)
p.transform(m)
self.assertEqual(p.x, 8)
self.assertEqual(p.y, 10)
p = Point(4, 5)
m = AffineTransformation.scaling(1.5, -2)
p.transform(m)
self.assertEqual(p.x, 6)
self.assertEqual(p.y, -10)
def test_translate(self):
p = Point(30, 70)
p.rotate(Point(0, 0), math.pi / 4)
self.assertEqual(p.x, -28.284271247461906)
self.assertEqual(p.y, 70.71067811865476)
p = Point(30, 70)
m = AffineTransformation.rotation(math.pi / 4)
p.transform(m)
self.assertAlmostEqual(p.x, -28.284271247461906)
self.assertAlmostEqual(p.y, 70.71067811865476)
p = Point(0, 10)
m = AffineTransformation.translation(Point(5, -2))
p.transform(m)
self.assertEqual(p.x, 5)
self.assertEqual(p.y, 8)
