This is awesome! Thanks to you and the others who have brought the code base to this point.
-Alex On 7/28/15, 11:15 AM, "Josh Tynjala" <joshtynj...@gmail.com> wrote: >Hey folks, > >Last week, I created a prototype of some Feathers-like components running >on top of CreateJS, but written in AS3 and transpiled with FlexJS. > >Here's a little demo: > >http://joshblog.net/projects/feathers-createjs/demo/ > >It's 50 buttons that can be scrolled vertically. Click/touch and drag to >scroll (like a mobile app). Nothing amazing, but I think it shows the >potential. > >I tested scrolling performance on several devices. It maintains a good 60 >FPS on my Nexus 5 and iPad Mini 3. It's still quite smooth on a couple of >three-year-old devices (Nexus 7 and Nexus 10 from 2012). For fun, I also >tried it with the original Kindle Fire from 2011, but that was super slow. >I suspect that this device's browser isn't capable of drawing canvas with >GPU acceleration, though. > >I found that I needed to make one particular optimization to get the best >performance. Most events dispatched by a Feathers component in this demo >come from an object pool so that event objects can be reused. This boosted >FPS on mobile devices a lot, in the same way that it helps in Starling. >Garbage collection (and possibly allocation, to some degree) is a >performance killer when it comes to UI. > >Scrolling is powered by the Zynga's "Scroller" JavaScript library. I >simply >made some externs for it. Being able to pull in existing JavaScript >libraries is really nice. > >I put the source code for this experimental version of Feathers up on >Github: > >https://github.com/joshtynjala/feathers-createjs > >You'll see that there are some workarounds for bugs in the transpiler >(which I've reported), but overall, it looks like regular old AS3 that >you'd write for the Flash runtimes. It felt really nice to bring my AS3 >skills to a different environment. > >- Josh
