[OSM-dev] Slippy map and zoom

Robert (Jamie) Munro rjmunro at arjam.net
Thu Feb 14 14:08:51 GMT 2008


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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.
|
|> 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.

While we are at it, please can we add a draggable zoom indicator thing,
like on every other online map that exists (including our own maps at
http://informationfreeway.com/, http://tiles.openstreetmap.nl/,
http://www.frankieandshadow.com/osm/ and other probably places).

Robert (Jamie) Munro
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