cyancdesign [Chris Yanc]

Fire up the SVN, Touchlib's AS3 TUIO library has been updated! Along with RotatableScalable. These files have been my introduction to developing Flash AS3 apps for multi-touch. This is a great thing, changes that have been mentioned in the NUIGroup Forum Threads have been added in. And even suggestions from this site has been added as well.

• Addition of DX/DY event sending. Important for getting multi-touch FluidSolver to work
• returnBlobs(); function was added into TUIO.as ~ a personal favorite of mine ~ read more
  
• RotatableScalable scaling registration point bug fixed ~ read more
  
• and TUIO debug mode ON/OFF bug fixed, all tracking diplays can be turned off without errors
  

Now that Touchlib is once again updated. I've integrated the new files into my own collection of experiments., and went through each one to make sure no problems arose. Another thing I began checking was using Flash Player's Standalone Debugger version 10. For those who don't have Flash to work with and do not have a stand alone player, that's where you can find one.

There is one catch with the stand alone player, any error in the Flash with completely halt it and throw up an error. It gets a little annoying, I know because some of my own apps were breaking. So this morning I checked each one. And here were some things that kept tripping up.

CrateTest.fla

The use of Box2DFlash, there was an extra bit in a function that was no longer needed.

<span class="kwd">if</span><span class="pun">(</span><span class="pln">TUIO</span><span class="pun">.</span><span class="pln">OBJECT_ARRAY</span><span class="pun">.</span><span class="pln">length </span><span class="pun">!=</span><span class="pln"> blobs</span><span class="pun">.</span><span class="pln">length</span><span class="pun">)</span><span class="pln"> </span><span class="pun">{</span><span class="pln">
     </span><span class="pln">removeBlob</span><span class="pun">(</span><span class="pln">blobs</span><span class="pun">[</span><span class="lit">0</span><span class="pun">].</span><span class="pln">id</span><span class="pun">);
}
</span>

That is from an older way of keeping track of blobs on the stage. Now I still haven't had the full chance to go back and really clean up the physics app, but one day soon I shall, I hope.

Rings

For that, there was just an bad character in a file I was linking too. I was throwing in a wierd character, I just replaced it with the proper character.

New File: touchMagnify version 1

At first I wasn't going to add this in. But it is functioning now.

Here's what happened, whenever I pressed on the close button for the magnification areas, it would error. But the error would come from RotatableScalable, which was nested inside the movie clip I was trying to add and remove from the stage.

What was happening was even though the press down would close and remove the magnification area, the RotatableScalable part of it would still try and read the MOUSE_UP within it even though it no longer existed. Propagation was my problem. If I have my terminology right, the TouchEvent kept bubbling through all the items unless it was told to stop. All I need to add was e.stopPropagation();

~I'll be writing more about this new app soon.

Wrapping up

If you haven't grabbed either my experiment files or the updated Touchlib files. Do it now. There are excellent fixes to start using.

Happy Experimenting.

Time for me to go put together a new grill. (^_^)//

Tags: Actionscript 3.0, Multi-Touch, Touchlib, TUIO, update

This entry was posted on Sunday, May 31st, 2009 at 10:05 am and is filed under Multi-Touch. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.