However, it seems like Simone can lead us to bigger and better things. Simone, when uDig eventually integrates your work, will it be possible to make a set of structured requests of the WMS to build a temporary image pyramid to improve user responsiveness. A user has at most 2000x2000 pixels on their screen. The base request should be for whatever area of interest (extent and scale) the map has when the user adds the layer to the map (or makes it visible). However, once that request is fulfilled, couldn't uDig start building an image pyramid on the fly so that whatever the user does next (pan, zoom) uDig would have the data. We can see immediately that there are a whole slew of issues that arise in designing such a background pyramid building. Is thissomething some of you have been pondering?
In my opinion the best way to do this would be to follow the WMS Client recommendation: http://wiki.osgeo.org/index.php/WMS_Tiling_Client_Recommendation
This is what openlayers uses, so we'd benefit from the caching of servers that openlayers is hitting. They pre-request a buffer, but not the next zoom level. uDig could also easily cache and pre-cache in this way.
Chris
Thanks again for all the work on RC9, --adrian ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier. Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Geotools-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/geotools-devel !DSPAM:1003,45c4d0dc203092207481331!
-- Chris Holmes The Open Planning Project http://topp.openplans.org
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