puts "========================"
puts " 	0033171: Modeling Algorithms - Invalid result of faces unification"
puts "========================"
puts ""

# make outer prism
polyline p 0 0 0  10 0 0  10 10 0  0 10 0  0 0 0
mkplane f p
prism s f 0 0 5

# make section shells
polyline p1 3 10 0  3 7 0  6 7 0  6 3 0  10 3 0
polyline p2 6 7 0  10 7 0
polyline p3 8 7 0  8 10 0
polyline p4 0 5 0  10 5 0

prism sh1 p1 0 0 5
prism sh2 p2 0 0 5
prism sh3 p3 0 0 5
prism sh4 p4 0 0 5

# split the prism
bclearobjects
bcleartools
baddobjects s
baddtools sh1 sh2 sh3 sh4
bfillds
bsplit r

checkshape r
if {![regexp "This shape seems to be OK" [bopcheck r]]} {
    puts "Error: invalid shape after split"
}

# try to unify faces in the result compound
unifysamedom ru1 r
unifysamedom ru2 r +i

checkshape ru1
checkshape ru2

checknbshapes ru1 -ref [nbshapes r -t] -t
checknbshapes ru2 -ref [nbshapes r -t] -t

if {![regexp "This shape seems to be OK" [bopcheck ru1]]} {
    puts "Error: invalid shape after faces unification"
}
if {![regexp "This shape seems to be OK" [bopcheck ru2]]} {
    puts "Error: invalid shape after faces unification"
}

# make compound of shells
eval compound [explode r] shs

unifysamedom shsu1 r
unifysamedom shsu2 r +i

checkshape shsu1
checkshape shsu2

checknbshapes shsu1 -ref [nbshapes shs -t] -t
checknbshapes shsu2 -ref [nbshapes shs -t] -t

if {![regexp "This shape seems to be OK" [bopcheck shsu1]]} {
    puts "Error: invalid shape after faces unification"
}
if {![regexp "This shape seems to be OK" [bopcheck shsu2]]} {
    puts "Error: invalid shape after faces unification"
}

checkview -display ru2 -2d -path ${imagedir}/${test_image}.png