puts "================"
puts "OCC27937"
puts "================"
puts ""
#######################################################################
# 0027937: Intersector loops infinitely while proceeding two simple surfaces
#######################################################################

cpulimit 100

# Attention!!!
# The test on performance meter.
# See issue #27937 for detail.
set GoodNbCurv 4

restore [locate_data_file bug27937_int1.draw] s1
restore [locate_data_file bug27937_int2.draw] s2

intersect result s1 s2

set che [whatis result]
set ind [string first "3d curve" $che]
if {${ind} >= 0} {
  #Only variable "result" exists
  renamevar result result_1
}

set ic 1
set AllowRepeate 1
while { $AllowRepeate != 0 } {
  set che [whatis result_$ic]
  set ind [string first "3d curve" $che]
  if {${ind} < 0} {
    set AllowRepeate 0
  } else {
    display result_$ic
    
    bounds result_$ic U1 U2
    
    dump U1 U2
    
    if {[dval U2-U1] < 1.0e-9} {
      puts "Error: Wrong curve's range!"
    }
    
    xdistcs result_$ic s1 U1 U2 10 3.0e-5
    xdistcs result_$ic s2 U1 U2 10 1.0e-5
    
    for { set ip [expr $ic-1] } { $ip > 0 } { incr ip -1 } {
      mkedge e1 result_$ic
      mkedge e2 result_$ip

      set coe [checkoverlapedges e1 e2 5.0e-5]

      puts "result_$ic <-> result_$ip: $coe"
      if { [regexp "Edges is not overlaped" $coe] != 1 } {
        puts "Error: result_$ic and result_$ip are overlaped"
      }
    }
     
    incr ic
  }
}

if {[expr {$ic - 1}] == $GoodNbCurv} {
  puts "OK: Number of curves is good!"
} else {
  puts "Error: $GoodNbCurv is expected but [expr {$ic - 1}] is found!"
}

smallview
don result*
fit
clear
don s1 s2 result*
checkview -screenshot -2d -path ${imagedir}/${test_image}.png