,X_black_Sign,Y_black_Sign,X_black_relative_displacement,Y_black_relative_displacement, X_red_Sign,Y_red_Sign,X_red_relative_displacement,Y_red_relative_displacement,X_yellow_Sign, Y_yellow_Sign,X_yellow_relative_displacement,Y_yellow_relative_displacement, L_black,L_red,L_yellow 这些变量都哪来的啊？