puts "========"
puts "OCC28189"
puts "========"
puts ""
#################################################
# Result of Boolean operation is non-manifold wire
#################################################

vertex v1 0 0 0
vertex v2 1 0 0
vertex v3 1 1 0
vertex v4 0 1 0
edge e1 v1 v2
edge e2 v3 v2
edge e3 v3 v4
edge e4 v1 v4

compound e1 e2 e3 e4 edges
edgestowire result edges

if {![regexp "WIRE" [whatis result]]} {
  puts "Error: Wire is not created"
}

explode result

if {![regexp "FORWARD" [whatis result_1]]} {
  puts "Error: Incorrect orientation of edges in wire"
}

if {![regexp "REVERSED" [whatis result_2]]} {
  puts "Error: Incorrect orientation of edges in wire"
}

if {![regexp "FORWARD" [whatis result_3]]} {
  puts "Error: Incorrect orientation of edges in wire"
}

if {![regexp "REVERSED" [whatis result_4]]} {
  puts "Error: Incorrect orientation of edges in wire"
}