From ff1a9d420db1059163f0b0510de8584df0da1e81 Mon Sep 17 00:00:00 2001
From: Frederic Junod <frederic.junod@camptocamp.com>
Date: Mon, 28 Apr 2014 14:35:37 +0200
Subject: [PATCH] Add an extent constraint to the device-orientation example

---
 examples/device-orientation.js | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/examples/device-orientation.js b/examples/device-orientation.js
index fb64f82f2f..a8786b8252 100644
--- a/examples/device-orientation.js
+++ b/examples/device-orientation.js
@@ -3,10 +3,14 @@ goog.require('ol.Map');
 goog.require('ol.View2D');
 goog.require('ol.dom.Input');
 goog.require('ol.layer.Tile');
+goog.require('ol.proj');
 goog.require('ol.source.OSM');
 
+var projection = ol.proj.get('EPSG:3857');
 var view = new ol.View2D({
   center: [0, 0],
+  projection: projection,
+  extent: projection.getExtent(),
   zoom: 2
 });
 var map = new ol.Map({
@@ -41,5 +45,5 @@ deviceOrientation.on(['change:beta', 'change:gamma'], function(event) {
   center[0] -= resolution * gamma * 25;
   center[1] += resolution * beta * 25;
 
-  view.setCenter(center);
+  view.setCenter(view.constrainCenter(center));
 });