def __createCircleShape(info: 'Dict[str, Any]') -> 'Circle':
shape = Circle(None, info['radius'], (info.get('x', 0), info.get('y', 0)))
shape.mass = info['mass']
shape.elasticity = info.get('elasticity', 0.5)
shape.friction = info.get('friction', 0.5)
return shape
