box b1 0 0 0 1 1 1
dset r sqrt(2)
box b2 0 0 0 r r/2 0.5
trotate b2 0 0 0 0 0 1 45

bop b1 b2
bopfuse result

checkprops result -s 7.41421
checkview -display result -2d -otherwise { b1 b2 } -s -path ${imagedir}/${test_image}.png