puts "========================"
puts " OCC423 "
puts "(case 1)"
puts "========================"
puts ""

restore [locate_data_file cylindre.rle] cyl 
checkshape cyl

restore [locate_data_file contour.rle] cont 
checkshape cont

mkplane cont cont
nexplode cyl F

ttranslate cont 0 200 0
featdprism cyl cont cont -10 1 1

if [catch {featperformval dprism result 55 cyl_3 } catch_result] {
    puts "Faulty OCC423 (case 1): function FEATPERFORMVAL works wrongly"
} else {
    puts "OCC423 OK (case 1): function FEATPERFORMVAL works properly"
}

checkprops result -s 94944.4 
checkshape result
checkview -display result -2d -path ${imagedir}/${test_image}.png