transform_test.py 文件源码

def test_rotate__lossless_at_90_degrees(self):
        w, h = 32, 32
        s = pygame.Surface((w, h), pygame.SRCALPHA)

        gradient = list(test_utils.gradient(w, h))

        for pt, color in gradient: s.set_at(pt, color)

        for rotation in (90, -90):
            s = pygame.transform.rotate(s,rotation)

        for pt, color in gradient:
            self.assert_(s.get_at(pt) == color)