puts "========"
puts "OCC829"
puts "========"
puts ""
###################################
## BRepOffsetAPI_MakeOffset fails on given wires
###################################
puts " This part -  LIMITATION for existed algorithms"
###################################

restore [locate_data_file OCC829_w1.brep] a 
checkshape a
explode a w

if { [catch { mkoffset result a_1 1 5 } status] } {
    puts "Faulty : An exception was caught"
} else {
    renamevar result_1 result
    set nb_info [nbshapes result]
    regexp {VERTEX +: +([-0-9.+eE]+)} $nb_info full ve
    puts [format "Result shape result contains %s vertexes" $ve]
    if { $ve == 0 } {
        puts [format "Faulty : Result shape is NULL shape"]
    } else {
        regexp {WIRE +: +([-0-9.+eE]+)} $nb_info full wi
        if {$wi > 1 } {
            set ll [explode result w]
            set num [llength $ll]
            puts [format "Faulty : Result shape result is COMPOUND and contains %s wires" $num]
            foreach {k} $ll {
                checkshape $k
                regexp {nb alone Vertices : ([-0-9.+eE]+)} [checksection $k] full cs
                if { $cs != 0 } {
                    puts [format "Faulty : Result shape is UNclosed wire !!! " $k]
                } else {
                    puts [format "OK: Result shape is CLOSED wire !!! "]
                }
            }
        }
    }
    checkprops result -l 8577.24 
checkshape result 
checksection result
    checkview -display result -2d -path ${imagedir}/${test_image}.png
}