A month or two ago, in a discussion of 2htdp/image and universe, two of us independently came up with more or less the same answer to our different problems: provide an easy way to render a 2:image to a bitmap, and cache this bitmap for rapid display the next time. This way if your animation had a complex but seldom-changing background image, you would compute that image only once, and thereafter treat it as though it had been read or copied from a PNG or the like, recomputing only ad necessary to place foreground images on it.
Mathew, would that help in your situation? Steve Bloch _________________________________________________ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/users
