Add wrapX option to ol.source.XYZ

src/objectliterals.jsdoc

@@ -994,6 +994,8 @@
  * @property {string|undefined} url URL template.  Must include `{x}`, `{y}`,
  *     and `{z}` placeholders.
  * @property {Array.<string>|undefined} urls An array of URL templates.
+ * @property {boolean|undefined} wrapX Whether to wrap the world horizontally.
+ *     Default is `true`.
  * @todo stability experimental
  */
 

src/ol/source/xyzsource.js

@@ -41,7 +41,8 @@ ol.source.XYZ = function(options) {
    * @type {ol.TileCoordTransformType}
    */
   this.tileCoordTransform_ = tileGrid.createTileCoordTransform({
-    extent: options.extent
+    extent: options.extent,
+    wrapX: options.wrapX
   });
 
   if (goog.isDef(options.tileUrlFunction)) {