wall_0=Wall(-10.05,-2.24,0.0,-8.41,-2.24,0.0,2.439811874788008,0.0)
wall_1=Wall(-8.41,-2.24,0.0,-8.41,0.53,0.0,2.439811874788008,0.0)
wall_2=Wall(-8.41,0.53,0.0,-10.05,0.53,0.0,2.439811874788008,0.0)
wall_3=Wall(-10.05,0.53,0.0,-10.05,-2.24,0.0,2.439811874788008,0.0)