Merge pull request #333 from fredj/swisstopo_source

Add new gmf.source.Swisstopo

contribs/gmf/exports/source/swisstoposource.js

@@ -0,0 +1,4 @@
+goog.require('gmf.source.Swisstopo');
+
+
+goog.exportSymbol('gmf.source.Swisstopo', gmf.source.Swisstopo);

contribs/gmf/externs/gmfx.js

@@ -105,6 +105,37 @@ gmfx.source.AsitVDOptions;
 gmfx.source.AsitVDOptions.prototype.layer;
 
 
+/**
+ * @typedef {{
+ *    layer: string,
+ *    format: (string|undefined),
+ *    timestamp: string
+ * }}
+ */
+gmfx.source.SwisstopoOptions;
+
+
+/**
+ * Layer name.
+ * @type {string}
+ */
+gmfx.source.SwisstopoOptions.prototype.layer;
+
+
+/**
+ * Image format. Default is `png`.
+ * @type {string}
+ */
+gmfx.source.SwisstopoOptions.prototype.format;
+
+
+/**
+ * The `Time` dimension of the source.
+ * @type {string}
+ */
+gmfx.source.SwisstopoOptions.prototype.timestamp;
+
+
 /**
  * Configuration object for the locationchooser component.
  * @typedef {{

contribs/gmf/src/source/swisstoposource.js

@@ -0,0 +1,71 @@
+goog.provide('gmf.source.Swisstopo');
+
+goog.require('ol.Attribution');
+goog.require('ol.source.WMTS');
+goog.require('ol.tilegrid.WMTS');
+
+
+/**
+ * @const {!Array.<number>}
+ * @private
+ */
+gmf.source.SwisstopoResolutions_ = [
+  4000, 3750, 3500, 3250, 3000, 2750, 2500, 2250, 2000, 1750, 1500, 1250,
+  1000, 750, 650, 500, 250, 100, 50, 20, 10, 5, 2.5, 2, 1.5, 1, 0.5
+];
+
+
+/**
+ * @const {ol.tilegrid.WMTS}
+ * @private
+ */
+gmf.source.SwisstopoTileGrid_ = new ol.tilegrid.WMTS({
+  extent: [420000, 30000, 900000, 350000],
+  resolutions: gmf.source.SwisstopoResolutions_,
+  matrixIds: gmf.source.SwisstopoResolutions_.map(function(value, index) {
+    return String(index);
+  })
+});
+
+
+
+/**
+ * Layer source for the Swisstopo tile server.
+ * WARNING: This tile server is not publicly available: you have to be
+ *          registered by Swisstopo to use the service.
+ * @see https://api3.geo.admin.ch/services/sdiservices.html#wmts
+ *
+ * @constructor
+ * @extends {ol.source.WMTS}
+ * @param {gmfx.source.SwisstopoOptions} options WMTS options.
+ */
+gmf.source.Swisstopo = function(options) {
+
+  var format = options.format ? options.format : 'png';
+
+  goog.base(this, {
+    attributions: [gmf.source.Swisstopo.ATTRIBUTION_],
+    url: 'https://wmts{5-9}.geo.admin.ch/1.0.0/{Layer}/default/{Time}' +
+        '/21781/{TileMatrix}/{TileRow}/{TileCol}.' + format,
+    dimensions: {
+      'Time': options.timestamp
+    },
+    projection: 'EPSG:21781',
+    requestEncoding: 'REST',
+    layer: options.layer,
+    style: 'default',
+    matrixSet: '21781',
+    format: 'image/' + format,
+    tileGrid: gmf.source.SwisstopoTileGrid_
+  });
+};
+goog.inherits(gmf.source.Swisstopo, ol.source.WMTS);
+
+
+/**
+ * @const {ol.Attribution}
+ * @private
+ */
+gmf.source.Swisstopo.ATTRIBUTION_ = new ol.Attribution({
+  html: '&copy; <a href="http://www.swisstopo.admin.ch">swisstopo</a>'
+});