circle_left = plt.Circle((-dist_l_r/2, 0), dwleft.distance, color='red', fill=False)
circle_right = plt.Circle((dist_l_r/2, 0), dwright.distance, color='green', fill=False)
plt.gca().add_patch(circle_left)
circle_left = plt.Circle((-dist_l_r/2, 0), dwleft.distance, color='red', fill=False)
circle_right = plt.Circle((dist_l_r/2, 0), dwright.distance, color='green', fill=False)
plt.gca().add_patch(circle_left)