4 ms·Very nice, simple and elegant. Would make a nice screensaver with a bit more movement.by keyle 2y agoVery nice, simple and elegant. Would make a nice screensaver with a bit more movement.jedberg 2y agoJust add seconds for constant movement.NKosmatos 2y agoAdding a few more flies would make it even better. Hey the code is on GitHub, so we're all free to create our variations ;-)