But wouldn't an obvious answer to this be to use a background full of swirl, then add people onto it, then swirl again (so the background swirl is swirled twice).
Then when you'd be "deswirling" with you code, you'll be finding something always swirled?
maybe even use a background who's "swirled right" and then "swirl left" the "backgroung + people" (or nyan cat or whatever)?
But wouldn't an obvious answer to this be to use a background full of swirl, then add people onto it, then swirl again (so the background swirl is swirled twice).
Then when you'd be "deswirling" with you code, you'll be finding something always swirled?
maybe even use a background who's "swirled right" and then "swirl left" the "backgroung + people" (or nyan cat or whatever)?