Comment by mysteryDate

This is all great feedback!

  I'm sure most users know this by now, but generally for performance the fewer calls you make to the canvas and the context, the beter.

This is almost entirely due to the javascript engine. We're working on ways to improve it.

  roundRect is great. Though you don't need 4 arcTo in order to make a rounded rect, you can use bezier instead (we do).

Yeah, the example was a little bit humorous, I kinda brute forced it.

  Their example is also 1% amusing because they set the `fillStyle` but then call `stroke` (and not `fill`).

You caught what 100 rounds of edits did not.