[OpenLayers-Dev] click & pinch overhaul
cedric.moullet at gmail.com
Tue Mar 8 17:08:07 EST 2011
It's really a great function, and so fast !!!
I put two answers inline,
On Tue, Mar 8, 2011 at 8:48 AM, Tim Schaub <tschaub at opengeo.org> wrote:
> Thanks for the report Cédric. Comments below.
> On 3/7/11 10:49 AM, Cédric MOULLET wrote:
>> Hi Tim,
>> Thanks for these improvements. I have tested on several plattforms (see
>> I face the same issues like Steven. In addition, I have observed the
>> following things:
>> - iTouch 3.1.3: Pinch Zoom Dragging -> it moves the browser instead of
>> the map and makes the function ineffective
> I also saw the same on an iTouch before upgrading. But I'm pretty sure I
> saw it on the trunk (instead of just on this sandbox). Are you seeing the
> issue in this sandbox and not on the trunk? (I've only got access to an
> upgraded iTouch, and pinch zooming works there.)
I have tested on your sandbox: Here is a small video that presents the
for the quality, but I'm not Spielberg). I can observe that the pinch
function is working, but the browser window moves. I don't observe that on
the iPad 4.2. If it's an iOS version issue, I don't think it's so important.
> - Android Nexus S: the double click seems to work a bit better, but has
>> still issues. No idea why (but this is a very empirical observation)
> Sounds like the 10 pixel tolerance for double clicks may not be enough.
> I'd be curious what you see for pixel displacement on typical double-tap
> sequences (on a touch device).
I have added an average and standard deviation function:
iTouch 3.1.3: pair: 30 - avg: 4.2 - std: 3.1
iPad 4.2: pair 30 - avg 6.7 - std: 2.5
Android Nexus S: pair 30 - avg: 8.3 - std: 4.5
These are of course very empirical results, but it seems that I'm less
precise on an Android nexus S. So the tolerance should be a bit bigger.
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