Animation problems with new pre-release

[m.douglas.williams]

I am having a problem with my animations on the new Racket pre-release. I've attached two examples from my animated-canvas package on PLaneT. Any of the animations that use the plot package are extremely slow. The one that doesn't runs fine. I've attached two examples. The first, lines.rkt, doesn't use the plot package and runs fine - just run it and hit the run button on the gui it brings up. The second, anim.rkt, uses the plot package. Previously, anim.rkt gave a nice, smooth animation of a 3d plot. Now, it takes several seconds to render individual frames. I see the same behavior whether I compile it or run it from the DrRacket. I am using 64-bit Racket on Windows 8.1.

I don't think it has anything to do with Robby's recent snip% changes, but I guess it is possible. In any case, it does make some of my code unusable.

Note that running either of the examples will download the animated-canvas package from PLaneT.

Doug