Add WMTS capabilities parsing example (see #2637).

git-svn-id: http://svn.openlayers.org/trunk/openlayers@10391 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
2010-06-12 18:46:33 +00:00
parent 07ee9991be
commit f42bbd1dfc
2 changed files with 126 additions and 0 deletions
--- a/examples/wmts-capabilities.js
+++ b/examples/wmts-capabilities.js
@@ -0,0 +1,88 @@
+OpenLayers.ProxyHost = "/proxy/?url=";
+
+var map, format;
+
+function init() {
+    
+    format = new OpenLayers.Format.WMTSCapabilities();
+    OpenLayers.Request.GET({
+        url: "http://v2.suite.opengeo.org/geoserver/gwc/service/wmts",
+        params: {
+            SERVICE: "WMTS",
+            VERSION: "1.0.0",
+            REQUEST: "GetCapabilities"
+        },
+        success: function(request) {
+            var doc = request.responseXML;
+            if (!doc || !doc.documentElement) {
+                doc = request.responseText;
+            }
+            var capabilities = format.read(doc);
+            var layer = createLayer(capabilities, {
+                layer: "medford:buildings",
+                matrixSet: "EPSG:900913",
+                format: "image/png",
+                opacity: 0.7,
+                isBaseLayer: false
+            });
+            map.addLayer(layer);
+        }, 
+        failure: function() {
+            alert("Trouble getting capabilities doc");
+            OpenLayers.Console.error.apply(OpenLayers.Console, arguments);
+        }
+    })
+    
+    map = new OpenLayers.Map({
+        div: "map",
+        projection: "EPSG:900913",
+        units: "m",
+        maxExtent: new OpenLayers.Bounds(
+            -20037508.34, -20037508.34, 20037508.34, 20037508.34
+        ),
+        maxResolution: 156543.0339
+    });    
+    
+    var osm = new OpenLayers.Layer.OSM();
+
+    map.addLayer(osm);
+    map.addControl(new OpenLayers.Control.LayerSwitcher());
+    map.setCenter(new OpenLayers.LonLat(-13677832, 5213272), 13);
+    
+}
+
+function createLayer(capabilities, config) {
+
+    var contents = capabilities.contents;
+    var matrixSet = contents.tileMatrixSets[config.matrixSet];
+
+    // find the layer definition with the given identifier
+    var layers = contents.layers;
+    var layer;
+    for (var i=0, ii=layers.length; i<ii; ++i) {
+        if (layers[i].identifier === config.layer) {
+            layer = layers[i];
+            break;
+        }
+    }
+
+    // get the default style for the layer
+    var style;
+    for (var i=0, ii=layer.styles.length; i<ii; ++i) {
+        style = layer.styles[i];
+        if (style.isDefault === "true") { // TODO: change this to boolean
+            break;
+        }
+    }
+
+    // create the layer
+    return new OpenLayers.Layer.WMTS(
+        OpenLayers.Util.applyDefaults(config, {
+            url: capabilities.operationsMetadata.GetTile.dcp.http.get,
+            name: layer.title,
+            style: style,
+            matrixIds: matrixSet.matrixIds
+        })
+    );
+    
+}