puts "============"
puts "OCC2785"
puts "============"
puts ""
######################################################
# Cut and fuse operations for two faces that share same domain give invalid result
######################################################
# Cut and fuse operations for two faces that share same domain gives invalid
# result, if one face has a hole and other face touches a boundary of this hole.
######################################################
## (new topology)
## (bcut)
## (bop)
## (boptuc)
## (bfuse)
######################################################

############# data #############
pcylinder c1 2 10
pcylinder c2 2 2
explode c1 f
explode c2 f
mksurface gs c2_1
trim trgs gs 1 2 2 4
mkface ff trgs
trim trgs gs 0 1 2 4
mkface ff2 trgs

bcut rcut1 c1_1 ff
checkshape rcut1

bop ff2 rcut1
boptuc rcut2
checkshape rcut2

bfuse fuse1 rcut2 ff2
checkshape fuse1

bfuse result fuse1 ff

set square 125.664
set 3dviewer 1