Seth Sandler» actionscript

Javascript to AS3 – Blobby blobby

SethSandler — Sat, 28 Aug 2010 23:05:16 +0000

Ever since I saw Jeff Han’s lava lamp multitouch demo, I’ve been interested in ‘blobs’ or ‘meta-balls’. There’s a great new HTML5/javascript demo of interacting with blobs (moving, splitting, merging, etc) http://hakim.se/experiments/html5/blob/03/.

The code is opensource under a MIT license so I decided to try porting the little application over to actionscript 3 to see how straight forward it is to port from javascript to as3.I know the trend is moving the opposite way – AS3 -> html5/js, but this is more a proof of concept of how easy it can be to move from one to the other. After about 2 hours messing around, I was able to port 90% (minus the window interaction and skinning). 85% of

Audiotouch OS – Flash Multi-touch Audio Environment

SethSandler — Sun, 22 Aug 2010 18:15:05 +0000

Well, I never did a ‘proper’ video of my Audiotouch work, so after 2 years I decided to reshoot some video and experiment with my new HD video camera. The video is also in preparation for another how-to video that I’m developing that builds off the Mtmini video (check that out if you haven’t ) and shows how to create a simple multi-touch surface quick and easy.

I’m hoping to eventually get back to these applications and improve on a few of them. They’ve gone untouched for almost 2 years and were originally written prior to the iphone, ipad, and microsoft surface. It’s amazing how far the technology has come in such a short time.

Enjoy and let me know

Wall Pong (WONG) – Interactive Multiplayer Multitouch Pong Game – Now with source code!!!

SethSandler — Sun, 27 Jun 2010 21:20:21 +0000

Wall Pong is an interactive multi-player multitouch pong type game I wrote in AS3 a couple years ago. The aim is to get the ball into the opposing goal. You can see Wong within my Audiotouch OS software. I’ve been meaning to release the source code and game for quite some time and finally I had the chance to clean up the code (it still could use WAY more cleaning and probably re-factoring), but it’s in good enough shape for others to use.

I’m hoping to convert this version to use the new native touch api in flash CS5.

You can download the application on sparkon here!!

Introducing AS3 Multitouch Gesture Demo Application/Utility

SethSandler — Tue, 13 Oct 2009 19:26:19 +0000

On my last project I had to use a gesture to initiate an event. Due to this, I recently started experimenting in creating a simple multitouch version of some gesture engines that are available. I’ve come across three that are already available in AS3 and chose to start with the $1 gesture algorithm http://depts.washington.edu/aimgroup/proj/dollar/. It only seems fitting to start with this one since Andy Wilson of microsoft research (and many multitouch devices) had a hand in it’s development.

Like most algorithms, this one matches points drawn with a template that’s already stored. After the gesture is finished, it is matched up against templates in the database and given a percentage of how much it matched it’s closest template

Flocking around with AS3 and Multitouch

SethSandler — Thu, 23 Jul 2009 20:31:53 +0000

For a while I’ve been interested in emergent behavior where simple rules can create complex behavior. One of the most known examples of such behavior is Craig Reynolds ‘boids’ where a few simple rules can recreate the flocking behavior of birds.

I recently came across a great and clean example of some boids code by soulwire (make sure to check out his whole site; it’s great). Since we’ve seen various examples of this behavior on multitouch tables (like on the iBar), I decided to add some basic touch support to soulwire’s example. So, now we have it…multitouchable boids!

Right now, the demo only supports multitouch (TUIO), but mouse interaction can be easily added back in. I’ve purposely left this demo

Super Cool Multitouch Actionscript Fluid Solver

SethSandler — Thu, 14 May 2009 18:31:57 +0000

Eugene has just ported Memo’s fluid solver work to AS3 http://blog.inspirit.ru/?p=248. With the source now out, I was able to quickly add multitouch support and it works great! Thanks to cyandesign and simpleex for keeping me on my toes.

Click the above image to play

A couple notes, the touchlib AS3 classes had to be corrected since they currently don’t send dX and dY values which the fluid solver needs to calculate directional velocity. Other than that, things went fairly smoothly and took little time to make touch sensitive.

Download:

Both source code and application are included. The swf is inside the bin folder.

If you try this out, leave a comment here and let me know how things