Graphical effect transformation are usually nonlinear...

...aside from the obvious ones like scale, skew, etc. The only way to undo them is to guess the original parameters (swirl factor 95%!) and then use numerical methods.

They aren't trapdoor functions, so it's not that difficult, just tedious:
Unswirl 1%, does it look human? No, unswirl 2%...

Posted By: yarmyyarmy, Oct 16, 14:03:00