- initialize: function(name, url, options) {
- options = OpenLayers.Util.extend(options, {
- attribution: "Data by <a href='http://openstreetmap.org/'>OpenStreetMap</a>",
- maxExtent: new OpenLayers.Bounds(-20037508,-20037508,20037508,20037508),
- maxResolution: 156543,
- units: "m",
- projection: "EPSG:41001"
- });
- OpenLayers.Layer.TMS.prototype.initialize.apply(this, arguments);
- },
-
- /**
- * Method: getUrl
- *
- * Parameters:
- * bounds - {<OpenLayers.Bounds>}
- *
- * Returns:
- * {String} A string with the layer's url and parameters and also the
- * passed-in bounds and appropriate tile size specified as
- * parameters
- */
- getURL: function (bounds) {
- var res = this.map.getResolution();
- var x = Math.round((bounds.left - this.maxExtent.left) / (res * this.tileSize.w));
- var y = Math.round((this.maxExtent.top - bounds.top) / (res * this.tileSize.h));
- var z = this.map.getZoom();
- var limit = Math.pow(2, z);
-
- if (y < 0 || y >= limit)
- {
- return OpenLayers.Util.OSM.MISSING_TILE_URL;
- }
- else
- {
- x = ((x % limit) + limit) % limit;
-
- var url = this.url;
- var path = z + "/" + x + "/" + y + ".png";
-
- if (url instanceof Array)
- {
- url = this.selectUrl(path, url);
- }
-
- return url + path;
- }
+ initialize: function(name, options) {
+ var url = [
+ "http://a.tile.openstreetmap.org/${z}/${x}/${y}.png",
+ "http://b.tile.openstreetmap.org/${z}/${x}/${y}.png",
+ "http://c.tile.openstreetmap.org/${z}/${x}/${y}.png"
+ ];
+ options = OpenLayers.Util.extend({ numZoomLevels: 19 }, options);
+ var newArguments = [name, url, options];
+ OpenLayers.Layer.OSM.prototype.initialize.apply(this, newArguments);