puts "========="
puts " OCC500 "
puts "========="
puts ""
###############################
## Result of pipe command of Draw is faulty
###############################

restore [locate_data_file OCC500a.brep] a_1 
puts [checkshape a_1]

restore [locate_data_file OCC500b.brep] a_2
puts [checkshape a_2]

if [catch {pipe result a_1 a_2 } catch_result] {
    puts "Faulty OCC500 : function PIPE works wrongly "
} else {
    puts "OCC500 : function PIPE works without hangs up "
}
set square 1246.13
set 2dviewer 0