pcylinder b1 4 8
ptorus b2 4 1
ttranslate b2 0 0 4
trotate b2 0 0 4 0 0 1 270

bop b1 b2
boptuc result

checkprops result -s 141.789
checkview -display result -2d -otherwise { b1 b2 } -s -path ${imagedir}/${test_image}.png