OCCT

# test script on make volume operation
# plane

# planar face 
plane pln_f1 0 840 1.2212453270876722e-014 0 -1 -1.1102230246251565e-016
erase pln_f1
mkface f1 pln_f1 -1000000 1000000 -1000000 1000000

# planar face 
plane pln_f2 0 1185 3.6082248300317588e-015 0 1 -1.1102230246251565e-016
erase pln_f2
mkface f2 pln_f2 -1000000 1000000 -1000000 1000000

# planar face 
plane pln_f3 1647.3008224550001 893 1538.57262704 1 1.1102230246251568e-016 -2.2204460492503131e-016
erase pln_f3
mkface f3 pln_f3 -1000000 1000000 -1000000 1000000

# planar face 
plane pln_f4 2110.4902670099996 910.00000000000023 -2000.0000001000003 -2.2204460492503131e-016 1.1102230246251565e-016 -1
erase pln_f4
mkface f4 pln_f4 -1000000 1000000 -1000000 1000000

# planar face 
plane pln_f5 1539.9999999964914 910 -2029.9999999964916 -0.70710678118654757 3.3306690738754696e-016 0.70710678118654746
erase pln_f5
mkface f5 pln_f5 -1000000 1000000 -1000000 1000000

# planar face 
plane pln_f6 1510 910 -1999.9999998999997 -2.2204460492503131e-016 1.1102230246251565e-016 -1
erase pln_f6
mkface f6 pln_f6 -1000000 1000000 -1000000 1000000

# make volume operation 
mkvolume result f1 f2 f3 f4 f5 f6

checkprops result -s 97028.3