def test_invert(self): t = AffineTransform() t.rotate(-math.pi / 2.0) t.scale(4.0, 3.0) t.translate(100, 100) p = t.transformPoint(0, 0) t.invert() p = t.transformPoint(p[0], p[1]) for i in range(0, len(p)): self.assertAlmostEqual(p[i], 0)
def test_translate(self): translation = (100, 200) t = AffineTransform() t.translate(translation[0], translation[1]) p = t.transformPoint(0, 0) for i in range(0, len(p)): self.assertAlmostEqual(p[i], translation[i])
def test_multiply(self): t1 = AffineTransform() t1.rotate(math.pi / 2.0) t2 = AffineTransform() t2.translate(2, 4) t3 = AffineTransform() t3.scale(3, 5) p = (20, 20) p1 = (p[0], p[1]) p1 = t1.transformPoint(p1[0], p1[1]) p1 = t2.transformPoint(p1[0], p1[1]) p1 = t3.transformPoint(p1[0], p1[1]) t4 = AffineTransform() t4.multiply(t1) t4.multiply(t2) t4.multiply(t3) p2 = t4.transformPoint(p[0], p[1]) for i in range(0, len(p1)): self.assertAlmostEqual(p1[i], p2[i])