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

Seth Sandler» demo

Introducing AS3 Multitouch Gesture Demo Application/Utility

Flocking around with AS3 and Multitouch