puts "========"
puts "0031080: Data Exchange, STL reader - improve API for reading multi-domain STL files"
puts "========"
puts ""

pload ALL

# create two boxes with mesh
box b1 5 5 5 
box b2 5 5 5 
ttranslate b2 10 10 10 
incmesh b1 0.1
incmesh b2 0.1

# write each box to Ascii STL
writestl b1 $imagedir/${casename}_1.stl 0
writestl b2 $imagedir/${casename}_2.stl 0

set aTmpStl "${imagedir}/${casename}_cat.stl"
file delete $aTmpStl
set file_res [open $aTmpStl a+]

# cat each stl files content to file_res
set file_stl [open $imagedir/${casename}_1.stl r]
set buffer [read $file_stl];
puts $file_res $buffer
close $file_stl

set file_stl [open $imagedir/${casename}_2.stl r]
set buffer [read $file_stl];
puts $file_res $buffer
close $file_stl
close $file_res

# load multi-domain STL
readstl result ${imagedir}/${casename}_cat.stl -multi

vinit
vdisplay result -dispmode 1
vfit

checknbshapes result -face 2 -compound 1
checktrinfo result -tri 24 -nod 16
checkview -screenshot -3d -path ${imagedir}/${test_image}.png