On Aug 21, 2009, at 7:54 am, msasha wrote:
> I'm porting my maps library (http://www.maryanovsky.com/sasha/maps/)
> to the iPhone (http://www.maryanovsky.com/sasha/maps/iphonedemo/) and
> I've run into the problem of making panning (and later, pinching)
> smooth. As can be seen in Google Latitude, panning can be made very
> smooth, but I, so far, have been unable to make smooth even simple
> drag and drop of a few images.
>
> You can see my attempts at
> http://www.maryanovsky.com/sasha/maps/iphone/js.html
> (open this on the iPhone or iPod Touch to be able to drag the images).
> If you view the source, you can see that I've tried 3 methods to
> implement panning:
>
> 1. Setting the "top" and "left" style attributes.
> 2. Setting the "marginTop" and "marginLeft" style attributes.
> 3. Using "WebkitTransform".
Use WebKitTransform but with a 3d transform type, like (in JS)
element.style.webkitTransform = 'translate3d(' + x + 'px, ' + y + 'px,
0)';
In CSS this would be like:
-webkit-transfrom: translate3d(100px, 100px, 0);
Simon
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