def __init__(self, s1, s2):
Bezier.__init__(self)
self._control_points[0] = s1
self._control_points[3] = s2
s1.add_link_to(self)
def __init__(self, s1, s2):
Bezier.__init__(self)
self._control_points[0] = s1
self._control_points[3] = s2
s1.add_link_to(self)