Hi Art,
Maybe it would be best to create a new Layer-type for your problem. But
using layerevents may help for now, e.g.:
graphic-events.register('moveend', window, function() {
// set the URL of your layer
});
Hope that helps, it is untested.
Regards,
Marc
Art Lembo wrote:
> I'm using Manifold GIS as a back-end GIS server. It works really
> great, except the WMS capabilities are horribly slow. One thing that
> is fast is the ability to generate an image of the GIS output by
> passing a url to a Manifold IMS site:
>
>
> var graphic = new OpenLayers.Layer.Image (
> 'My Map',
>
> 'http://blah,blah,blah/map.asp?[layers],[centerX],[centerY],[ScaleX],[ScaleY],[spatialSQL
>
> process],etc...
>
> so, this works really fast (instantaneous), and gets me a layer inside
> my OpenLayers site. And, I can even pass it an analysis function and
> it does that too.
>
> Now, when I zoom in or pan, obviously it just works with that initial
> image (i.e. var graphic) that was grabbed from the init function. So,
> of course zoom-ins begin to pixelate rather quickly.
>
> I would like the ability to refresh the initial image every time I
> zoom in or pan, using new centerX,centerY, and scales. That is, some
> function that gets thrown before the the image is redrawn.
>
> I guess it is an image Refresh, but that doesn't quite do it. My hope
> is to:
>
> 1. When the user zooms in I grab the new centerX, centerY, and scales
> from the browser, and reconstruct the url to hit the server again and
> show me an updated version, which will now be the zoomed in version of
> the layers.
>
> Any advice?
>
> thanks!
>
>
>
> ------------------------------------------------------------------------
>
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>
--
Dipl.-Geogr. Marc Jansen
- Anwendungsentwickler -
terrestris GmbH & Co. KG
Irmintrudisstraße 17
53111 Bonn
Tel: ++49 (0)228 / 96 28 99 -53
Fax: ++49 (0)228 / 96 28 99 -57
Email: jan...@terrestris.de
Web: http://www.terrestris.de
Amtsgericht Bonn, HRA 6835
Komplementärin: terrestris Verwaltungsgesellschaft mbH
vertreten durch: Hinrich Paulsen, Till Adams
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