def __init__(self, mobject, **kwargs):
digest_config(self, kwargs)
diameter = mobject.get_width()
if mobject.get_height() > diameter:
diameter = mobject.get_height()
Circle.__init__(self, **kwargs)
self.set_width(diameter + 2 * self.buff)
self.set_height(diameter + 2 * self.buff)
self.move_to(mobject)
def __init__(self, **kwargs):
Circle.__init__(self, **kwargs)
plus = TexMobject("+")
plus.scale(0.7)
plus.move_to(self)
self.add(plus)