And I thought I read somewhere in wiki that the touchscreen would be similar if not same to the ones having multi-touch sensing "support" (which can be programmed to support multi-touch at some point of time). With your statement I can't decide if I'm shocked or sad (maybe both) :(<br>
<br>Rahul J<br><br><div class="gmail_quote">On Fri, May 30, 2008 at 7:00 PM, Bastian Muck <<a href="mailto:bastian.muck@gmx.de">bastian.muck@gmx.de</a>> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
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No, the problem ist that the Freerunner does not have a multitouch display. Some developers just try to make one out of it :-)<br>
<br>
Rahul Joshi schrieb:<div class="Ih2E3d"><br>
| If I am to understand this thread discussion correctly, does it mean there is no public algo for multi-point touch sensing yet??<br>
| With so much of work done on projects like MS Surface, iPhone, the Jeff Han stuff.. and recently HTC Diamond, I took it for granted that it must already be there among the large resource pool of opensource developers.<br>
|<br>
| Rahul J<br>
|<br>
|<br></div>
| On Fri, May 30, 2008 at 2:46 PM, Ben Lau <<a href="mailto:benlau@embedded.hk" target="_blank">benlau@embedded.hk</a> <mailto:<a href="mailto:benlau@embedded.hk" target="_blank">benlau@embedded.hk</a>>> wrote:<br>
|<br>
| On Thu, May 29, 2008 at 7:11 PM, Joerg Reisenweber <<a href="mailto:joerg@openmoko.org" target="_blank">joerg@openmoko.org</a> <mailto:<a href="mailto:joerg@openmoko.org" target="_blank">joerg@openmoko.org</a>>> wrote:<br>
| > Am Do 29. Mai 2008 schrieb <a href="mailto:boris.stender@gmx.de" target="_blank">boris.stender@gmx.de</a> <mailto:<a href="mailto:boris.stender@gmx.de" target="_blank">boris.stender@gmx.de</a>>:<div><div>
</div><div class="Wj3C7c"><br>
| >> Hi Joerg,<br>
| >> as it seems that my mail did not reach the community list (I am not a<br>
| > subscriber, just monitoring the archives) may I ask you directly the question<br>
| > regarding "multi tutch" :-) . See below:<br>
| >><br>
| >><br>
| >> Hi all,<br>
| >> if the geometric average point is returned if multiple points are touched<br>
| > wouldn't it be possible to have a fake multi touch, e.g., by doing the<br>
| > following:<br>
| >><br>
| >> Press point A<br>
| >> -> Vector A is returned<br>
| >> Additionally press desired point B<br>
| >> -> X = (A+B)/2 is returned<br>
| >> -> calculate B = 2*X-A<br>
| >><br>
| >> Questions:<br>
| >> Would this be managable?<br>
| >> What time difference would be required between first and second (and<br>
| > third ...) touch, to recognize such a multi-touch action and reliable<br>
| > distinguish it from a single touch at position X?<br>
| >><br>
| >> And one more comment: If that would work you could also detect multi-touch<br>
| > gestures (even if limited), e.g., use the first point statically (maybe a<br>
| > focus centre) and handle the second point dynamically (maybe for zooming in<br>
| > and out).<br>
| >><br>
| >><br>
| >> Boris<br>
| ><br>
| ><br>
| > there are two resistors in the touchpad, one for X and one for Y. We only see<br>
| > them changing on a touch, thus giving us the coords. A concurrent second<br>
| > touch just changes the R values even more, but we get no info about whether<br>
| > we touched a second point or we moved the finger. So what you suggest is a<br>
| > gesture recognition. Things become nasty because even the "geometric middle"<br>
| > isn't true but depends on pressure of one to pressure of other touchpoint<br>
| > etc.<br>
| > You really get too few info out of the device to do anything reasonable with<br>
| > it beyond singletouch (at least that's the way it is now. I plan to see<br>
| > whether we can exploit dynamic pulse response of this design to get some<br>
| > additional info. Same way you're testing cat5-cable for breaks. Don't hold<br>
| > your breath though, chances are bad. And it's not on top of my todo-list)<br>
| ><br>
| > cheers<br>
| > jOERG<br>
| ><br>
| > _______________________________________________<br>
| > Openmoko community mailing list<br></div></div>
| > <a href="mailto:community@lists.openmoko.org" target="_blank">community@lists.openmoko.org</a> <mailto:<a href="mailto:community@lists.openmoko.org" target="_blank">community@lists.openmoko.org</a>><div class="Ih2E3d">
<br>
| > <a href="http://lists.openmoko.org/mailman/listinfo/community" target="_blank">http://lists.openmoko.org/mailman/listinfo/community</a><br>
| ><br>
| ><br>
|<br>
| Two-finger input with a standard touch screen<br>
| <a href="http://portal.acm.org/citation.cfm?id=1294239" target="_blank">http://portal.acm.org/citation.cfm?id=1294239</a><br>
|<br>
| This paper introduces a method to detect two fingers using a<br>
| "standard" touch screen. I haven't ready it deeply so I can not say is<br>
| it applicable on OpenMoko platform , but I think it is worth to study.<br>
|<br>
| _______________________________________________<br>
| Openmoko community mailing list<br></div>
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<br>
| <a href="http://lists.openmoko.org/mailman/listinfo/community" target="_blank">http://lists.openmoko.org/mailman/listinfo/community</a><br>
|<br>
|<br>
|<br></div>
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