# no. of objects: pipea rectangular channel and a pipe
   2
# ibfn ishape 
    1    7     solid rectangle by coordinates
  2.0 3.0,  0.0  1.0,  0.0  1.3
    0    3     horizontal hollow cylinder
  2. 0.5 0.2, 0.1 3. 0.5 0  (xc1,yc1,zc1) and rc,xc2,yc2