#C2----------------------------------------------
plane p 0 0 0 1 0 0 0 -.5 1
psphere p p 20 
plane p2 0 0 15 0 0 1 0 -1 0
pcylinder p2 p2 7 15
bfuse f p p2
nexplode f f
depouille result f 0 0 1 f_2 12 0 0 30 0 0 1

checkprops result -s 5536.07