From 2e395e4530084c48172e6bb4358f3971bcc6ab6f Mon Sep 17 00:00:00 2001
From: Tom Payne <twpayne@gmail.com>
Date: Tue, 18 Jun 2013 13:08:05 +0200
Subject: [PATCH] Constrain center in ol.interaction.DragPan

---
 src/ol/interaction/dragpaninteraction.js | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/ol/interaction/dragpaninteraction.js b/src/ol/interaction/dragpaninteraction.js
index 8d303ce846..0ef41626d6 100644
--- a/src/ol/interaction/dragpaninteraction.js
+++ b/src/ol/interaction/dragpaninteraction.js
@@ -68,6 +68,7 @@ ol.interaction.DragPan.prototype.handleDrag = function(mapBrowserEvent) {
   ];
   ol.coordinate.rotate(newCenter, view2DState.rotation);
   ol.coordinate.add(newCenter, this.startCenter);
+  newCenter = view.constrainCenter(newCenter);
   map.requestRenderFrame();
   view.setCenter(newCenter);
 };
@@ -95,6 +96,7 @@ ol.interaction.DragPan.prototype.handleDragEnd = function(mapBrowserEvent) {
       centerpx[0] - distance * Math.cos(angle),
       centerpx[1] - distance * Math.sin(angle)
     ]);
+    dest = view.constrainCenter(dest);
     view.setCenter(dest);
   }
   map.requestRenderFrame();