OCCT

# To prevent loops limit to 15 minutes
cpulimit 900
if { [array get Draw_Groups "TOPOLOGY Feature commands"] == "" } {
    pload TOPTEST
    setfillhistory 0
}
if { [array get Draw_Groups "Shape Healing"] == "" } {
    pload XSDRAW
}
if { [info exists imagedir] == 0 } {
   set imagedir .
}
if { [info exists test_image ] == 0 } {
   set test_image photo
}
proc OFFSETSHAPE {distance faces  calcul type} {
    global GlobFaces
    set GlobFaces $faces
    if {[llength $faces] > 0} {uplevel #0 explode s f}
    uplevel #0 offsetparameter 1e-7 $calcul $type
    uplevel #0 offsetload s $distance $faces
    uplevel #0 offsetperform result
}