>> print_geom_objects(sp123a)
*** 3 geom objects ***
 --> Gen 0 (Active Objects)
 1:  'SP1', 'brep'
     cutplane pt:   0.500000  0.500000  0.500000
   cutplane norm:   0.000000  0.000000  1.000000

    --> Gen 1
    1:  'B1', 'block'
              min        max
       x:  0.000000   1.000000
       y:  0.000000   1.000000
       z:  0.000000   1.000000

 2:  'SP2', 'brep'
     cutplane pt:   0.500000  0.500000  0.750000
   cutplane norm:   0.000000  0.000000  1.000000

    --> Gen 1
    1:  'SP2', 'brep'
        cutplane pt:   0.500000  0.500000  0.500000
      cutplane norm:   0.000000  0.000000  1.000000

       --> Gen 2
       1:  'B1', 'block'
                 min        max
          x:  0.000000   1.000000
          y:  0.000000   1.000000
          z:  0.000000   1.000000

 3:  'SP3', 'brep'
     cutplane pt:   0.500000  0.500000  0.750000
   cutplane norm:   0.000000  0.000000  1.000000

    --> Gen 1
    1:  'SP2', 'brep'
        cutplane pt:   0.500000  0.500000  0.500000
      cutplane norm:   0.000000  0.000000  1.000000

       --> Gen 2
       1:  'B1', 'block'
                 min        max
          x:  0.000000   1.000000
          y:  0.000000   1.000000
          z:  0.000000   1.000000

*** end print_geom_objects ***