puts "======="
puts "OCC890"
puts "SAM1681"
puts "======="
puts ""
##############################
## No possibility to fuse the attached prisms.
##############################

restore [locate_data_file OCC890.brep] a 
explode a

checkshape a_1
checkshape a_2

if { [ catch { bfuse result a_1 a_2 } catch_result ] } {
   puts "Faulty OCC890 (case 3)"
}

checkprops result -s 1.8276e+06 
checkshape result
checkview -display result -2d -path ${imagedir}/${test_image}.png