puts "========================"
puts " OCC539 "
puts "(case 1)"
puts "========================"
puts ""

 puts "==========================================="
 puts "  BOPCOMMON   case_4_shell.brep and case_4_wire3.brep"
 puts "==========================================="
 puts " " 

restore [locate_data_file case_4_shell.brep] a
restore [locate_data_file case_4_wire3.brep] b
bop a b
bopcommon result

set nb_v_good 15
set nb_e_good 10
set length 1150.78
set 2dviewer 0