Add getBounds to geometry

src/ol/geom/point.js

@@ -2,6 +2,7 @@ goog.provide('ol.geom.Point');
 
 goog.require('goog.asserts');
 goog.require('goog.vec.Float64Array');
+goog.require('ol.Extent');
 goog.require('ol.geom.Coordinate');
 goog.require('ol.geom.Geometry');
 
@@ -25,4 +26,23 @@ ol.geom.Point = function(coordinates) {
   this.dimension = coordinates.length;
   goog.asserts.assert(this.dimension >= 2);
 
+  /**
+   * @type {ol.Extent}
+   * @private
+   */
+  this.bounds_ = null;
+
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.geom.Point.prototype.getBounds = function() {
+  if (goog.isNull(this.bounds_)) {
+    var x = this.coordinates[0],
+        y = this.coordinates[1];
+    this.bounds_ = new ol.Extent(x, y, x, y);
+  }
+  return this.bounds_;
 };