i really really waiting for itablet

To be able to use TouchLib with this Tablet, the aquisition of multi-touch event must change. TouchLib actually uses images for detecting blobs and then use them has multi-touch events.

N-trig did release an SDK for this tablet, but it seems very limited, and it doens’t seems that open that could be used as a layer in the TouchLib.

You just need to get it to export OSC data.

Yes, you are right, but I think the N-trig SDK is very limited, for now.

Official n-trig SDK supports only gestures. Contacts will be supported in future versions.
It is possible to read raw data from n-trig sensor using Raw Input api in windows. MultiTouchVista framework makes this to support Wacom digitizer on TabletPC. If anyone has Latitude XT Tablet he could write an Input Provider for MultiTouchVista.

Hey Guys.

I am lucky enough to have a latitude xt avaliable at work to play with.

the duo sense ‘multi-touch’ is indeed very limited, infact it can only track 2 points of touch at a time, and if you use the pen it turns multi-touch off.

you can do rotatable/zoomable pinch/pull gestures, a slightly weird dual finger drag for scrolling, and a double finger double-tap to make the screen go black (kinda like a boss key and ultimately useless!!)

i have tested the drivers with both xp tablet edition and vista business x32 and i must say the xp drivers seem better at the moment.

i will continue testing as windows 7 milestone releases and betas appear, and will try to post my results!

overall i have been much more impressed with the TRUE multi touch capabilities from making your own setup!

actualy it is windows and drivers limitations. because they are working with microsoft (alows only one mouse) and not with us (unlimited touches)
n-trig sensor is a real multitouch device.

Daniel D does MultiTouchVista framework support silverlight web apps.  I have a dellXt and I’m interested in using this framework.  I built a silver light application that is currently not multi-touch.  If multi-touch could work over a web app that opens up a lot of possibilities.

It can be made to work with silverlght, but currently it does not work.

I have built a jazzmutant-style modular controller in max-msp-jitter, using Open Gl for graphics, and my own max code for relating tracked finger coordinates to the graphic sprites . initially, the finger tracking was coming from wiimote whiteboard, beacause I was just using the ir cam in the wiimote for a camera… and sending it to maxmsp with osc… I left it hanging at the hardware stage, when I started building my ftir setup, and got discouraged.

I am interested in continuing this project, and now that latitude XT has multitouch, I am wondering if I could use it with my controller project.

Max MSP has a HID (human interface device) object that reads whatever raw data is coming from HID usb devices it detects. If the duosense technology spits out separate coordinates for each finger in a simple to read way, than I could definitely use it with my setup… I have tried interfacing with touchscreen digitizers before, and they don’t always spit out easily interpretable coordinate info…

Can someone with the XT check what kind of data they get from the HID driver? Do you get separate coordinates for each finger? I assume the HID object in max would receive the same data as would recieve the Raw Input api in windows.

BTW, where can we find the sdk for n-trig’s multitouch duosense?

http://www.youtube.com/watch?v=00mKTEqnzbs

in this video, dell demonstrate a debuging software that clearly recognizes (at least) 5 fingers simultaneously and tracks them… so I assume the digitizer is not just spitting out pre-computed pinch, flic, pan, zoom and rotation data, but actually outputs raw finger coordinates…

Can someone with an XT confirm this? If it would help, I could make a standalone max-msp app that just prints out the raw data from the HID, and email it to you, or post it. All you would have to do is select the right device: ie. the touch screen and not the trackpad…

Touchmaster - 21 September 2008 12:00 PM

Daniel D does MultiTouchVista framework support silverlight web apps.  I have a dellXt and I’m interested in using this framework.  I built a silver light application that is currently not multi-touch.  If multi-touch could work over a web app that opens up a lot of possibilities.

For multitouch silverlight web apps have a look at http://www.generoso.info/livingsilverdesk. You can try it even online if you have a multitouch device and touchlib.

G.

I have the dell xt tablet but have no idea were to find out how to check the raw data that is output.  I’ve checked the hid drivers and there is four hid compliant devices associated with the n-trig digitizer.  I’ve sent an email to n-trig about the acquiring the sdk, and I’m still waiting for a reply. Does anybody know were i can find the raw data generated by ntrig?

Touchmaster - 28 September 2008 12:51 PM

I have the dell xt tablet but have no idea were to find out how to check the raw data that is output.  I’ve checked the hid drivers and there is four hid compliant devices associated with the n-trig digitizer.  I’ve sent an email to n-trig about the acquiring the sdk, and I’m still waiting for a reply. Does anybody know were i can find the raw data generated by ntrig?

I’ve prepared a small max application you should be able to use to read the HID data from the N-trig digitizer on the latitude XT, and save the data to a text file for analysis.

you can download it here (this link is only good for a week): https://rcpt.yousendit.com/610234398/e1c215e98dd623b7d68668acd3e21220

I’m on a mac right now, so i’m not completely sure if it will translate well on windows, but it should work.

To use it, you will need to download and install the max runtime from here: http://www.cycling74.com/download/maxmspruntime463.zip

when you’ve got it running… move your fingers on the screen and see what data you get. ideally what we’d like is a label for the point being tracked followed by its coordinates: 1XY, 2XY, 3XY, etc..

thanks,
alexander

I tried to get this to work on my xt but no love. Before i clicked menu the tab showed apple ir, then i hit menu and it shows nothing.