puts "========"
puts "Data Exchange, RWObj_Reader - fix reading facets with empty normals like 'f 1// 2// 3//'"
puts "Test reads small generated file."
puts "========"

set sample_obj {g Group1
v 0 0 0
v 2 0 0
v 2 1 0
v 1 2 0
v 0 1 0
v 0 0 2
v 2 0 2
v 2 1 2
v 1 2 2
v 0 1 2
f 5// 4// 3// 2// 1//
f 7// 8// 9// 10// 6//
f 10// 9// 4// 5//
f 9// 8// 3// 4//
f 6// 10// 5// 1//
f 2// 3// 8// 7//
f 1// 2// 7// 6//}

set fd [open ${imagedir}/${casename}.obj w]
fconfigure $fd -translation lf
puts $fd $sample_obj
close $fd
readobj mlf ${imagedir}/${casename}.obj -singleFace
checknbshapes mlf -face 1
checktrinfo   mlf -tri 16 -nod 10

# read OBJ into document
ReadObj D ${imagedir}/${casename}.obj

# Delete the temporary file after reading
file delete ${imagedir}/${casename}.obj

vclear
vinit View1
vdisplay -dispMode 1 mlf
vaxo
vfit
vdump ${imagedir}/${casename}_raw.png