EncodedPolyline: Added write() method

lib/OpenLayers/Format/EncodedPolyline.js

@@ -130,6 +130,51 @@ OpenLayers.Format.EncodedPolyline = OpenLayers.Class(OpenLayers.Format, {
         return points;
     },
 
+    /**
+     * APIMethod: write
+     * Serialize a feature or array of features into a WKT string.
+     *
+     * Parameters:
+     * features - {<OpenLayers.Feature.Vector>|Array} A feature or array of
+     *            features
+     *
+     * Returns:
+     * {String} The WKT string representation of the input geometries
+     */
+    write: function(features) {
+        var feature;
+        if (features.constructor == Array)
+            feature = features[0];
+        else
+            feature = features;
+
+        var geometry = feature.geometry;
+        var type = geometry.CLASS_NAME.split('.')[2].toLowerCase();
+
+        var pointGeometries;
+        if (type == "point")
+            pointGeometries = new Array(geometry);
+        else if (type == "linestring" ||
+                 type == "linearring" ||
+                 type == "multipoint")
+            pointGeometries = geometry.components;
+        else if (type == "polygon")
+            pointGeometries = geometry.components[0].components;
+        else
+            return null;
+
+        var points = new Array();
+        for (var i in pointGeometries) {
+            var pointGeometry = pointGeometries[i];
+            var point = [Math.round(pointGeometry.y * 1e5),
+                         Math.round(pointGeometry.x * 1e5)];
+            points.push(point);
+        }
+
+        var result = this.encode(points, 2);
+        return result;
+    },
+
     /**
      * APIMethod: encode
      * Serialize an array of n-dimensional points and return an encoded string