line l -3 0 1 2 
trim l l -1 2
copy l lr
2dtranslate lr 0 -4
reverse lr
convert result lr
2dpl 
2dpl
2dpu
2dpu
checklength result -l 2.9999999999999996
checkview -display result -2d v2d -path ${imagedir}/${test_image}.png