hyperbola h 5 -1 0 0 0 1 0 1 0 1 0.5
trim h h -1 1
copy h hr
translate hr 0 -4 0
reverse hr
convert result hr
pl
pl
pu
pu
checklength result -l 1.6539462322641865
checkview -display result -2d -path ${imagedir}/${test_image}.png