def __init__(self, type, pos, radius, rotation, density):
Circle.__init__(self, pos, radius)
self.id = None # will be set later
self.type = type
self.pos = self.center
self.rotation = rotation
self.density = density
self.mass = density * np.pi * np.power(radius, 3) * 4 / 3
self.poleOrbit = self.orbit(0, 0)
def __init__(self, point=ORIGIN, **kwargs):
self.fake_scale = False
Circle.__init__(self, **kwargs)
self.shift(point)
self.init_colors()
self.fake_scale = True
