Move reverseFlatCoordinates into ol.geom.flat

src/ol/geom/flatgeom.js

@@ -143,6 +143,27 @@ ol.geom.flat.inflateCoordinatesss =
 };
 
 
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {number} end End.
+ * @param {number} stride Stride.
+ */
+ol.geom.flat.reverseCoordinates =
+    function(flatCoordinates, offset, end, stride) {
+  while (offset < end - stride) {
+    var i;
+    for (i = 0; i < stride; ++i) {
+      var tmp = flatCoordinates[offset + i];
+      flatCoordinates[offset + i] = flatCoordinates[end - stride + i];
+      flatCoordinates[end - stride + i] = tmp;
+    }
+    offset += stride;
+    end -= stride;
+  }
+};
+
+
 /**
  * @param {Array.<number>} flatCoordinates Flat coordinates.
  * @param {number} stride Stride.