bsplinecurve profile 2 3 0 3 1 1 2 3 0 10 0 5 -10 -10 0 5 10 -10 5 5 0 10 0 5
mkedge profile profile 
wire profile profile 
mkplane profile profile
polyline w 0 0 0 10 -30 30 0 -70 90
pipe result w profile

checkprops result -s 4352.33