if { [info exists rel_tol] } {
   puts "\nChecking triangulation area (triarea command)..."
   set rel_err [expr abs([CheckTriArea result $area_eps])]
   if { $rel_err > $rel_tol } {
      puts "Error   : area by triangles differs from the actual area by $rel_err %"
   } else {
      if { $rel_tol > 1 && $rel_tol < 100 } {
        puts "Error: Improvement: The current area difference is $rel_err instead of $rel_tol"
      }
   }
}

checkview -display result -2d -path ${imagedir}/${test_image}.png

# to end a test script
puts "TEST COMPLETED"
