From bb294bf52f86d26e744c933823642d8667feb33b Mon Sep 17 00:00:00 2001
From: Tom Payne <twpayne@gmail.com>
Date: Mon, 2 Dec 2013 12:06:28 +0100
Subject: [PATCH] Add ol.geom.Polygon#getArea

---
 src/ol/geom/polygon.exports | 1 +
 src/ol/geom/polygon.js      | 9 +++++++++
 2 files changed, 10 insertions(+)

diff --git a/src/ol/geom/polygon.exports b/src/ol/geom/polygon.exports
index 64054f31e8..1b2fa4f0aa 100644
--- a/src/ol/geom/polygon.exports
+++ b/src/ol/geom/polygon.exports
@@ -1,4 +1,5 @@
 @exportSymbol ol.geom.Polygon
+@exportProperty ol.geom.Polygon.prototype.getArea
 @exportProperty ol.geom.Polygon.prototype.getCoordinates
 @exportProperty ol.geom.Polygon.prototype.getLinearRings
 @exportProperty ol.geom.Polygon.prototype.getType
diff --git a/src/ol/geom/polygon.js b/src/ol/geom/polygon.js
index 7f2b1430d3..2c4a732f4b 100644
--- a/src/ol/geom/polygon.js
+++ b/src/ol/geom/polygon.js
@@ -49,6 +49,15 @@ ol.geom.Polygon.prototype.containsXY = function(x, y) {
 };
 
 
+/**
+ * @return {number} Area.
+ */
+ol.geom.Polygon.prototype.getArea = function() {
+  return ol.geom.flat.linearRingsArea(
+      this.flatCoordinates, 0, this.ends_, this.stride);
+};
+
+
 /**
  * @return {ol.geom.RawPolygon} Coordinates.
  */