[android-developers] Re: Multitouch support in Android 2.0

I don't know about the h/w, but surely if the first the touch event
coordinates are (5, 5), and the next touch event coordinates are (5 &
10, 5 & 10), it should be pretty obvious where the second touch
landed, right? (10, 10). If both touches occur simultaneously, or are
dragged so that the they cross each other on either the x or y axis,
then it becomes ambiguous as to what happened, but in all other cases
it seems manageable. Certainly multi-touch keyboards should be able
to use this technique.

On Nov 4, 7:52 pm, Emmanuel <emmanuel.ast...@gmail.com> wrote:
> From what I've heard, the G1 phone doesn't not handle real multi
> touch.
>
> When there are several touches, it just indicates all the X and Y
> coordinates, but you still don't know to which impact it is connected.
>
> For instance, you can know that there are some impacts with this
> coordinates:
> X = 5, 10
> Y = 5, 10
>
> But from there, you can't decide whether the impacts are at ( 5, 10 )
> and ( 10, 5 ) or (5, 5) and (10, 10 ).
> You can still use for those limited things ( multi touch zooming ),
> but definitively not for everything !
> Still from what I've heard, it is a hardware limitation, so it won't
> change !!!
>
> Emmanuelhttp://androidblogger.blogspot.com/http://www.alocaly.com/
>
> Ps : Note that I would love to be proven wrong, as I have a G1 :)
>
> On Oct 27, 9:33 pm, Jason Proctor <jason.android.li...@gmail.com>
> wrote:> the G1 hardware does support multitouch. there has been a kernel &
> > browser hack available for a while which enables zooming, at least.
>
> > i played with it and adapted the java side for my own purposes. IMHO
> > there was a better way to do it, but it works well enough for what it
> > provides.
>
> > >Does anyone know if every phone will support multi-touch (I remember
> > >talk about the G1's hardware might not support multi-touch)?
>
> > --
> > jason.vp.engineering.particle

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