Moves the rect to the point x,y

def moveToPoint(self, xxx_todo_changeme):
        """
        Moves the rect to the point x,y
        """
        (x,y) = xxx_todo_changeme
        self.set_x(float(self.get_x()) + float(x))
        self.set_y(float(self.get_y()) + float(y))