#G4----------------------------------------------
profile p c 5 180 l 5 t 0 5 d -1 0 c 5 180 l 5
polyline w 0 0 0 0 0 10
pipe p w p
nexplode p f
depouille result p 0 0 1 p_1 5 0 0 0 0 0 1 \
p_7 1 0 0 0 0 0 1 \
p_8 5 0 0 0 0 0 1 \
p_2 1 0 0 0 0 0 1

set square 659.647