Add ol.geom.Polygon#getLinearRings

src/ol/geom/polygon.exports

@@ -1,4 +1,5 @@
 @exportSymbol ol.geom.Polygon
 @exportProperty ol.geom.Polygon.prototype.getCoordinates
+@exportProperty ol.geom.Polygon.prototype.getLinearRings
 @exportProperty ol.geom.Polygon.prototype.getType
 @exportProperty ol.geom.Polygon.prototype.setCoordinates

src/ol/geom/polygon.js

@@ -1,6 +1,7 @@
 goog.provide('ol.geom.Polygon');
 
 goog.require('ol.geom.Geometry');
+goog.require('ol.geom.LinearRing');
 goog.require('ol.geom.flat');
 
 
@@ -53,6 +54,20 @@ ol.geom.Polygon.prototype.getEnds = function() {
 };
 
 
+/**
+ * @return {Array.<ol.geom.LinearRing>} Linear rings.
+ */
+ol.geom.Polygon.prototype.getLinearRings = function() {
+  var linearRings = [];
+  var coordinates = this.getCoordinates();
+  var i, ii;
+  for (i = 0, ii = coordinates.length; i < ii; ++i) {
+    linearRings.push(new ol.geom.LinearRing(coordinates[i]));
+  }
+  return linearRings;
+};
+
+
 /**
  * @inheritDoc
  */