beziercurve w 4 0 0 0 10 0 0 10 10 0 20 10 0
mkedge w w
wire w w
circle profile 0 0 0 1 0 0 5
mkedge profile profile
wire profile profile
mkplane profile profile
pipe s w profile

OFFSETSHAPE 1 {s_1 s_3} $calcul $type

checkprops result -v 811.465
