Feel free to open a ticket and create a patch with tests.
-- Chris
On Mar 16, 2011, at 7:34 AM, ext Martin Saturka wrote:
> Hi,
> could we have a class for MapQuest Open based maps, please? We use
> them, having the class below, just that may be it could be at the OL
> themselves.
>
> OpenLayers.Layer.MapQuest = OpenLayers.Class(OpenLayers.Layer.OSMMod, {
> name: "MapQuest",
> attribution: "Data CC-By-SA by <a href='http://openstreetmap.org/'
> target='_blank'>OpenStreetMap</a>. Rendered by <a
> href='http://open.mapquest.co.uk/' target='_blank'>MapQuest</a>.",
> sphericalMercator: true,
> url: [
> 'http://otile1.mqcdn.com/tiles/1.0.0/osm/${z}/${x}/${y}.png',
> 'http://otile2.mqcdn.com/tiles/1.0.0/osm/${z}/${x}/${y}.png',
> 'http://otile3.mqcdn.com/tiles/1.0.0/osm/${z}/${x}/${y}.png',
> 'http://otile4.mqcdn.com/tiles/1.0.0/osm/${z}/${x}/${y}.png'
> ],
> CLASS_NAME: "OpenLayers.Layer.MapQuest"
> });
>
> It can have a missed tile when an image is rendered too long by them
> (OL tries to load that immediately after a fail event, without
> possibility to wait for a while). We handle it with server
> randomization then (it looks it helps), and going back to an OSM tile
> when a problem. This way we can use the OSM tiles without making a
> load on the OSM servers.
>
> OpenLayers.Util.originalOnImageLoadError = OpenLayers.Util.onImageLoadError;
> OpenLayers.Util.onImageLoadError = function() {
> if (this.src.match(/^http:\/\/otile[1-4]\.mqcdn\.com\//)) {
> if (!this._attempts) {this._attempts = 0;}
> var mq_start = "http://otile"; + Math.floor(1 + (4 *
> Math.random())) + ".mqcdn.com/tiles/1.0.0/osm/";
> if ((2 + this._attempts) > OpenLayers.IMAGE_RELOAD_ATTEMPTS)
> {
> var osm_start = "http://tile.openstreetmap.org/";;
> this.src = osm_start + this.src.substr(mq_start.length);
> }
> else
> {
> this.src = mq_start + this.src.substr(mq_start.length);
> }
> }
> OpenLayers.Util.originalOnImageLoadError();
> };
>
> M.
>
> --
> Martin Saturka
> Software Engineer, Sourcefabric
> www.sourcefabric.org
> _______________________________________________
> Dev mailing list
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