A little fun with BitmapData.draw()

I got this idea the other day and decided to try it out.

What if I could prerender, of sorts, a complex vector animation as a series of bitmaps?

After a bit of testing I got it to work.
Warning: May freeze your browser for a few seconds while it renders the frames.
PreRender.html

It's quite slow to do the inital rendering but it does as advertised.