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Hi,<br>
<br>
it would be fine to have this behavior for zooming by jumps also (using
scrollbar or similar control) - show resized bitmap until new image is
loaded.<br>
<br>
Tomas<br>
<br>
<br>
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Today's Topics:
1. Re: new zooming feature (Erik Uzureau)
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Message: 1
Date: Tue, 12 Dec 2006 13:50:57 +0100
From: "Erik Uzureau" <a class="moz-txt-link-rfc2396E" href="mailto:euzuro@gmail.com"><euzuro@gmail.com></a>
Subject: Re: [OpenLayers-Dev] new zooming feature
To: " Emanuel Sch?tze " <a class="moz-txt-link-rfc2396E" href="mailto:emanuel@intevation.de"><emanuel@intevation.de></a>
Cc: <a class="moz-txt-link-abbreviated" href="mailto:dev@openlayers.org">dev@openlayers.org</a>
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Emanuel,
Your proposal sounds excellent!
We actually already have a ticket [1] in our TRAC for this, though it
is currently
unscheduled because all the OL developers are busy with other projects.
As far as I know, nobody else has worked on this problem, and it is something
we have wanted for a long time.
Please let us know what you need to get started on this -- we are eager to
see what you can do.
Erik
[1]
On 12/11/06, Emanuel Sch?tze <a class="moz-txt-link-rfc2396E" href="mailto:emanuel@intevation.de"><emanuel@intevation.de></a> wrote:
</pre>
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<pre wrap="">Hi,
I study digital media in Bremen/Germany. At the present time I begin to write
my diploma thesis at Intevation (<a class="moz-txt-link-abbreviated" href="http://www.intevation.de">www.intevation.de</a>), a Free Software company,
about web mapping applications and smart map browsing. In the practical part
of this work I want to realize a feature of smart map browsing for
OpenLayers.
I want to implement a "looks-like-live-zooming"-feature like used by p.mapper
(look at the p.mapper-demo: <a class="moz-txt-link-freetext" href="http://www.pmapper.net/demo.shtml">http://www.pmapper.net/demo.shtml</a>).
During you regulate the zoomlevel with the zoomslider the current
mapview-bitmap is scaling on-the-fly by just shrinking or enlarging the
bitmap. Looks cool for zoomin, but for zoomout you have a
white frame, naturally.
Now, OpenLayers with the tile-preloading could even consider the tiles around
the visible center for a good zoomout-experience.
My time for this development is limited. I have to finish this feature at the
end of february 2007. So I'd like to start as soon as possible. Integrating
the zoomfeature is independet of whether there is (a new ka-map/OpenLayers)
tile-preloading already(?) implemented. But the nice zoomout effect requires
it.
What do you think about my idea?
Already someone woking on this?
Any major blocker you see?
Will the (final) ka-map/OpenLayers tile preloading be available soon?
Does such a zoomfeature has a chance to get into the core of OpenLayers?
All the best,
Emanuel
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