restore [locate_data_file bug28442_simple4.brep] s

offsetparameter 1e-7 c i r
offsetload s 0

foreach f [explode s f] {
  mksurface surf $f
  set found [regexp {Axis   :([-0-9.+eE]*), ([-0-9.+eE]*), ([-0-9.+eE]*)} [dump surf] full x y z]
  if {$found == 0} {
    continue
  }
  # reverse normal direction for faces with orientation REVERSED  
  if {[regexp {REVERSED} [whatis $f]]} {
    set z [expr -1*$z]
  }
  # set offset value for top faces only
  if {abs($z - 1) < 1.e-7 } {
    offsetonface $f 2.7
  }
}
offsetperform result

checkprops result -v 783.404 -s 711.46

unifysamedom result_unif result
checknbshapes result_unif -face 17 -shell 1

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