Open Source Interface

tuioframework

2008-08-21T14:58:13-05:00

I have been trying to write a mouse driver for the mac. I have hit one major snag. I can’t figure out how to get tuioframework, the objective c tuio receiver to work. Has anyone else ran into this problem?

Open Source iPhone TUIO App

2008-08-20T12:33:00-05:00

Hi everybody,

Since we won’t switch to TUIO for the communication from iPhone to Desktop for our multi-touch framework, we would like to contribute code for an open source iPhone TUIO application. So if there is someone who knows how exactly the TUIO protocol looks like (which commands have to be send) we could create this app together really quickly.

With best wishes, Stefan

MultiTouch.framework Beta Program

2008-08-14T12:54:18-05:00

Hi everyone,

Since the beta version of our multi-touch framework is almost ready, we are now accepting applications for a private beta. If you know how to code in Objective-C with Cocoa, own an iPhone or iPod touch and would like to try out our framework before it is officially released, please write an email to stefan.hafeneger[AT]rwth-aachen.de with your contact details and your programming background. Please use MultiTouch.framework Beta Application as subject line since the emails will be filtered. If you got questions concerning the beta program please write me an email as well.

With best wishes, Stefan

BBTouch, now with TUIO support

2008-07-22T00:30:22-05:00

Hey All,

I know a few people here were waiting for TUIO support for BBTouch, so I am posting here just to let you guys know that I have just committed all the new TUIO enabled code to the google repository. (since you probably check out this website more often than my blog, ha!)

I had it running just fine with the Processing TUIODemo sketch from the rectivision website. It should be compatible with any app that is able to receive TUIO commands (via OSC/UDP).. BBTouch should be all reacTIVision 1.4 compliant (presuming i read the spec right, and read the code right as well

note: BBTouch doesn’t do fiducials (yet) so all it generates are the 2DCursor profile events.

as always the code is here:
http://code.google.com/p/bbosc/

and some notes (and some pics of BBTouch and Processing playing nice) on my blog here:

http://benbritten.com/blog/2008/07/22/tuio-support-is-here/

Let me know how you guys go (either here or on the blog) and if you have any trouble of find any problems.

Cheers!
-panda

OS X Multitouch?

2008-03-19T14:02:30-05:00

Hello,
I would like to get a feel for how much interest there would be for more OS X development in the way of multi-touch. I think OS X is the ideal platform for multi-touch applications, especially because of frameworks like Core Animation and Core Video. Right now I am using OS X for my multi-touch table and OpenTouch for my blob detection. Is there anyone else using OS X in their projects?
What kind of tools would be considered helpful for those wanting to use OS X? Some projects I would like to work on include porting OpenTouch to be a Cocoa application and utilizing frameworks like Core Video (this would allow it to be GPU accelerated), a Cocoa framework for receiving TUIO messages in a Cocoa application, and some tools for allowing Core Animation layers to respond to multi-touch events. What do you think of these projects? Which would be the most helpful?

TTFN
Bridger Maxwell

Touché - FTIR multitouch tracker and framework for MacOS X Leopard

2008-08-15T19:28:14-05:00

Hello,

I’ve just released Touché, an open-source (LGPL) multitouch tracker and framework written in Cocoa for MacOS X Leopard. It supports QuickTime-compatible cameras, libdc1394-compatible cameras (gives you some control over camera hardware features as well) and Wii Remotes (experimental, mostly for playing around a bit) as input sources. There are some useful Core Image filters that can be applied to the video stream before the frames are thresholded and passed to OpenCV for blob detection. Labeling the blobs (i.e. finding out which blob corresponds to which blob in the previous frame(s)) uses the Accelerate framework (AltiVec, SSE2/3) for best performance, as well as the camera to screen coordinate conversion. It’s also possible to specify the amount of frames that the labelizer should look back in order to match blobs, and to specify the amount of calibration points (larger screens require more points, but if the angle between your camera and your screen is particularly oblique, more calibration points might be useful too!).

You can receive tracking data in your own applications by embedding a Cocoa framework (included in the download zip) within the application, which provides communication with the tracker over Cocoa Distributed Objects and a delegate interface, as well as some helper classes for processing multitouch events (enumeration of combinadic indices to test for gestures formed by multiple touches, for example) and some pre-built gesture recognizers (currently there’s a recognizer for pinch/zoom gestures and one that can count taps (i.e. single tap, double-tap, triple-tap, etc...)).

I’m not entirely up to date on other endeavours to provide FTIR multitouch tracking for MacOS X, but when I started writing Touché in December, I couldn’t really find any viable tracker that runs on OS X, so I think/hope that Touché might be useful to others as well. It’s been/being created as part of my master’s thesis on multitouch, for which I need a test-bed in order to experiment with multitouch interfaces.

The project is hosted at Google Code, but I’ve set up a page for it on my own website as well. There’s a download link and also a demo video and an introduction video. The page is at http://gkaindl.com/software/touche/.

I’d love to hear some feedback about it and hope that it might be useful to some of you!

Using Iphone to Develope Desktop Software

2008-07-16T13:47:42-05:00

[youtube]skZCBvWVu8A[/youtube]

I really hope this is open source

Also I wonder if it supports TUIO… if so many of our existing applications will already work.

What are your guy’s thoughts?

Cocoa examples/tutorial

2008-07-29T16:37:28-05:00

Is there a good examples or tutorial for Cocoa? Apple Documentation is not very usable (no examples).

BBtouch TUIO cursor control?

2008-07-29T07:42:37-05:00

Hi,

Thanks for all the help so far. I am currently looking for a way to control the cursor in osx using bbtouch just for a single touch interface using my FTIR setup, Has anyone got some way of doing this?

Any help on the topic would be gratefully received.

Cocoa OSC and TUIO questions

2008-07-21T04:09:50-05:00

Hello all,

I am in the midst of developing up a cocoa implementation of multitouch stuff. I was originally going to just build the framework and then build some apps on top of that (bypassing the TUIO stuff) but there has been enough interesting in a TUIO solution that I have redirected my efforts.

Anyway, 2 things:

1) i have implemented a mostly Cocoa-only OSC sender/listener ‘framework’ (it isnt a framework yet, just a bunch of source files).
It does all the bit-level ordering and decoding of OSC datagrams. It is a connectionless UDP implementation (which seems to be the going thing for OSC). The only big note at the moment is that if you are going to use it to dispatch messages for your own code (and i hope you do) you will need to develop your own dispatch code. BBOSC will receive the packets and decode them into bundle and message objects, so that is all done, but you would need to add your own code to make the “/osc/command arg1 arg2 arg3” do anything besides log to the console. I plan to add a nice callback registry for all that stuff, but i wanted to get the TUIO working in BBTouch first.

anyhow, what is there seems to be working dandy. you can get the code here:

http://code.google.com/p/bbosc/

and some notes here

http://benbritten.com/blog/2008/07/21/osc-now-with-more-cocoa/

2) the second thing is my question: I am new to the TUIO/OSC bandwagon. Implementing the protocol wont be too bad, but I will need to test it against something that is TUIO capable. So what out there is TUIO capable that runs on the mac? (that is preferably free and or open source) I can write my own, but that doesnt really test whether my stuff is compatible with other people’s stuff

I vaguely remember reading about some flash apps that should work (i do actually have flash 3, so i wouldn’t have to buy that) but i couldn’t seem to find them in my various searches on the forums. any help would be greatly appreciated!

cheers!
-panda