puts "========"
puts "OCC28690"
puts "========"
puts ""
##########################################
##  Section algorithm produces micro edge
##########################################

restore [locate_data_file bug28690_m9_faces.brep] a
plane f 0 0 0 0 1 0
mkface f f
bsection r a f
checknbshapes r -edge 3 -vertex 4
checkshape r
checkprops r -l 7976.14

# check that all edges have enough length
foreach e [explode r] {
  if {[validrange $e] == "edge has no valid range"} {
    regexp {Mass : *([0-9\-+.eE]+)} [lprops $e] dummy len
    regexp {Tolerance MAX=([0-9\-+.eE]+)} [tolerance $e] dummy tol
    puts "Error: edge $e (lenth=$len, tolerance=$tol) is too small"
  }
}