Hi Jim, > Apologies as this is an old bug, but I just looked at the fix and it seems > to me that it will allow shearing transforms to pass because the tests are > incomplete. The 0or180 flag only tests if the horizontal lines stay > horizontal, but they could shift relative to each other in increasing Y > which means a shear is present. Similar, the 90or270 flags only verify that > vertical lines stay vertical, but allow a shear in X.
Thanks a lot for pointing that out, I'll take care about it. - Clemens
