1 #F1----------------------------------------------
2 polyline p 0 0 7 0 0 0 10 0 0 10 0 7
3 #beziercurve bc 4 10 0 7 7 0 7 3 0 7 0 0 7
4 bsplinecurve bc 2 3 0 3 1 1 2 3 \
5 10 0 7 1 7 0 7 1 3 0 8 1 0 0 7 1
9 revol p p 0 0 0 0 0 1 360
13 depouille result f 0 0 1 f_2 2 0 0 14 0 0 1