Adding google.maps.Polygon.prototype.getBounds

1 files changed, 28 insertions, 2 deletions

diff --git a/gmap_arcgis.js b/gmap_arcgis.js
index a2c8b53..77e0465 100644
--- a/gmap_arcgis.js
+++ b/gmap_arcgis.js
@@ -1,5 +1,31 @@
-// $Id$
+/**
+ * Extend Google Maps API.
+ */
+google.setOnLoadCallback(function() {
+  // See https://code.google.com/p/google-maps-extensions/source/browse/google.maps.Polygon.getBounds.js
+  if (!google.maps.Polygon.prototype.getBounds) {
+
+    google.maps.Polygon.prototype.getBounds = function(latLng) {
+
+      var bounds = new google.maps.LatLngBounds();
+      var paths = this.getPaths();
+      var path;
+
+      for (var p = 0; p < paths.getLength(); p++) {
+        path = paths.getAt(p);
+        for (var i = 0; i < path.getLength(); i++) {
+          bounds.extend(path.getAt(i));
+        }
+      }
+
+      return bounds;
+    }
+  }
+});
 
+/**
+ * Gmap ArcGIS wrapper.
+ */
 function gmapArcgis(config) {
   return {
     // Storable properties
@@ -385,7 +411,7 @@ function gmapArcgis(config) {
      * @see http://stackoverflow.com/questions/9837017/equivalent-of-getboundszoomlevel-in-gmaps-api-3
      */
     getZoomByBounds: function(bounds) {
-      var map              = this.map();
+      var map              = this.map;
       var MAX_ZOOM         = map.mapTypes.get(map.getMapTypeId()).maxZoom || 21;
       var MIN_ZOOM         = map.mapTypes.get(map.getMapTypeId()).minZoom || 0;
       var ne               = map.getProjection().fromLatLngToPoint(bounds.getNorthEast());