[ka-Map-users] Panning and zooming question

[Moran Ben-David]

You could do what we've done in http://pushpin.place-base.com (use usr/pwd =
demo/demo).  We snap the user to the closest zoom level to the extent they
chose with the zoom box.  I think it's a good solution.  Especially since,
the box is in most cases not forced to be in proportion to the map height
and width.  

That is, the resulting extent should at least contain the extent selected by
the zoom box.  If that is the case, making it a little bigger to snap to a
zoom level isn't so bad.

Moran

> -----Original Message-----
> From: ka-map-users-bounces at lists.maptools.org [mailto:ka-map-users-
> bounces at lists.maptools.org] On Behalf Of Matthew Perry
> Sent: Tuesday, May 31, 2005 3:17 AM
> To: Gambin Dejan
> Cc: ka-map-users at lists.maptools.org
> Subject: Re: [ka-Map-users] Panning and zooming question
> 
> On 5/30/05, Gambin Dejan <Dejan.Gambin at pula.hr> wrote:
> > I think box zooming is not difficult to implement so it shouldn't be a
> > problem to contribute.
> 
> Box zooming will introduce major problems on the server side as there
> will be a potentially inifinite number of zoom levels. This equates to
> a potentially infinite number of tiles and the massive disk space and
> processor time used to generate and store these tiles. As ka-map is
> already **very** processor intensive, this is not an option for many
> of us with a modest hardware budget ;-)
> 
> How would you propose to solve these problems? Is box zoom even viable
> given the tile model of ka-map??
> 
> --
> Matt Perry
> perrygeo at gmail.com
> http://www.perrygeo.net
> 
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