function draw5(pts,scl)

if nargin<2
    scl = [-75 75 -25 125];
end
% plot hallway floor edges
idx = 1:2;
plot(pts(idx,1),pts(idx,2),'g','LineWidth',2);
hold on
idx = 3:4;
plot(pts(idx,1),pts(idx,2),'r','LineWidth',2);
hold off
axis(scl)
axis equal

Published with MATLAB® 7.10