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

restore [locate_data_file bug28690_m8_faces_1.brep] a
ttranslate a -20000 -2597.4029071873542 -8.9312813979176155
plane f 0 0 0 1 0 0
mkface f f
bsection r a f
checknbshapes r -edge 2 -vertex 3
checkshape r
checkprops r -l 3896.32

# 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"
  }
}