occt/tests/bugs/modalg_7/bug29334

puts "# ======================================================================"
puts "# 0029334: Simple offsets complicate geometry"
puts "# ======================================================================"

puts "Make box, fillet one of its edges, and extract two planar faces connected by fillet"
box b 10 10 10
explode b e
blend r b 1 b_5
explode r f
compound r_1 r_3 r_6 shape

puts "Offset these faces using simple offset algo"
offsetshapesimple result shape 1

puts "Verify that all faces of the result are either planes or cylinders"
set i 1
foreach f [explode result f] {
  mksurface surf_$i $f
  set surf_dump [dump surf_$i] 
  if { [regexp {Offset} $surf_dump] } {
    puts "Error: surface $i is offset, should be plane or cylinder"
  }
  if { ! [regexp {Plane|CylindricalSurface} $surf_dump] } {
    puts "Error: surface $i is not plane or cylinder"
  }
  incr i
}