[OSM-dev] Slippy map and zoom
Christopher Schmidt
crschmidt at metacarta.com
Fri Feb 15 14:51:50 GMT 2008
On Thu, Feb 14, 2008 at 01:06:32PM +0000, Tom Hughes wrote:
> In message <Pine.LNX.4.64.0802141201220.13951 at localhost.localdomain>
> Lars Aronsson <lars at aronsson.se> wrote:
>
> > When I use the scroll wheel to zoom in and out of the slippy map,
> > whether on www.openstreetmap.org, maps.yahoo.com, or
> > maps.google.com, the screen goes blank for a short while before
> > the tiles of the new zoom level arrive. At Google Maps, some red
> > corners move about showing whether I'm zooming in or out.
> >
> > Would it be possible, in JavaScript, to show the existing tiles,
> > rescaled by the browser, until the new tiles arrive?
>
> When OpenLayers can do that, then yes we will do it. As it happens
> that is going to be in the next release I believe.
Yep.
> > If this was possible, I guess the browser could also emulate finer
> > grades (half-levels) of zooming. It would make for a less bumpy
> > user experience.
>
> That is also something that the next release of OL is expected to
> be able to do I believe.
Not for OSM tiles: fractional zoom is only for services that allow
arbitrary bbox requests.
Regards,
--
Christopher Schmidt
MetaCarta
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