def _transform_surf(self):
"""Transformation of the surface
Set the surface to the angle, flip, anchor and scale
"""
self._surf = self._orig_surf
p = self.pos
if self._scale != 1:
size = self._orig_surf.get_size()
self._surf = pygame.transform.scale(self._surf, (int(size[0] * self._scale), int(size[1] * self._scale)))
self._surf = pygame.transform.flip(self._surf, self._flip_x, self._flip_y)
self._surf = pygame.transform.rotate(self._surf, self._angle)
self.width, self.height = self._surf.get_size()
w, h = self._orig_surf.get_size()
ax, ay = self._untransformed_anchor
anchor = transform_anchor(ax, ay, w, h, self._angle)
self._anchor = (anchor[0] * self._scale, anchor[1] * self._scale)
self.pos = p
self._mask = None
def test_45deg(self):
assertVecEqual(transform_anchor(5, 5, 10, 10, 45),
(5 * root2, 5 * root2))
def test_45deg_offset(self):
assertVecEqual(transform_anchor(0, 0.5, 1, 1, 45),
(0.25 * root2, 0.75 * root2))
def test_identity(self):
assertVecEqual(transform_anchor(5, 5, 10, 10, 0), (5, 5))