[Request] Distort map

Not really a tutorial, but a request for one. If it is in wrong forum, please feel free to 'displace' it.

Anyway, I don't really understand the Sprite object's distort map stuff. I would greatly appreciate a tutorial - no doubt many others would, as well!

Thanks in the advance.

Here's a quick thing I did.. not exactly a tutorial but something to play around with until someone writes one up. Willhostforfood is down for maintenance atm so here's a temporary storage option. You have to wait 10secs or something..

http://www10.zippyshare.com/v/85504544/file.html