From 31a51cf398517cf03cda4c12d417475f02b7509f Mon Sep 17 00:00:00 2001
From: Tom Payne <twpayne@gmail.com>
Date: Tue, 14 Jan 2014 17:36:42 +0100
Subject: [PATCH] Add ol.source.Tile#getTilePixelSize

---
 src/ol/source/tilesource.js | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/src/ol/source/tilesource.js b/src/ol/source/tilesource.js
index d9410ce6c6..732ab63d2f 100644
--- a/src/ol/source/tilesource.js
+++ b/src/ol/source/tilesource.js
@@ -169,6 +169,20 @@ ol.source.Tile.prototype.getTileGridForProjection = function(projection) {
   } else {
     return this.tileGrid;
   }
+};
+
+
+/**
+ * @param {number} z Z.
+ * @param {number} pixelRatio Pixel ratio.
+ * @param {ol.proj.Projection} projection Projection.
+ * @return {number} Tile size.
+ */
+ol.source.Tile.prototype.getTilePixelSize =
+    function(z, pixelRatio, projection) {
+  var tileGrid = this.getTileGridForProjection(projection);
+  return tileGrid.getTileSize(z);
+};
 
 
 /**