Hi, I would advise you to look at OpenLayers.Layer.ArcIMS which uses a similar approach.
Best regards, Bart > Hi, > > I'm a frontend developer and was programming a web viewer for a > proprietary, > WMS-like map service. > I discovered Openlayers one month ago and I'm really fascinated by its > awesome capabilities, so I decided to integrate our map service in > OpenLayers. > > Here is a short description how the map service works: > > The client sends an AJAX request containing the current map bounds, the > map > id and the pixel size of the map. > map=22&px=1720&py=833&left=2504400&right=2544000&top=5699500&bottom=5669500&type=0 > > The server responds with the generated map image (url) and the corrected > bounds: > <MapProperties> > <mapLeft>2493227.6110444176</mapLeft> > <mapTop>5699500</mapTop> > <mapRight>2555172.3889555824</mapRight> > <mapBottom>5669500</mapBottom> > <mapType>0</mapType> > <overviewMap>22</overviewMap> > <url>http://localhost/cgmCache/41600065-c3d2-4934-9feb-78a32f6668c8.png > </url> > </MapProperties> > > The maps are always single-tiled. > > My first approach was to write a ProprietaryMapLayer, that executes the > map > request and creates an ImageLayer with the result url and its bounds. > When the ImageLayer is moved, a new request is performed, the current > ImageLayer is destroyed and a new one generated. The disadvantage: there > are > now 2 layers representing one map, which leads to confusion in the layer > switcher control. > > I read over the code of Layer.WMS, which inherits from Layer.Grid and also > makes use of Tile.Image, but it's difficult to derive a solution from it, > since all the request/response handling is already integrated into the > layer. Furthermore, WMS simply responds with tile images, whereas I have > to > deal with an xml response. > > Any ideas how I could implement my layer? > > kind regards, > > Franz > _______________________________________________ > Users mailing list > [email protected] > http://openlayers.org/mailman/listinfo/users > -- Looking for flexible support on OpenLayers or GeoExt? Please check out http://www.osgis.nl/support.html Bart van den Eijnden OSGIS [email protected] _______________________________________________ Users mailing list [email protected] http://openlayers.org/mailman/listinfo/users
