From 680f5cbb5a15bc769cfcb0a1a905e5bcf505e784 Mon Sep 17 00:00:00 2001
From: Frederic Junod <frederic.junod@camptocamp.com>
Date: Mon, 30 Sep 2013 10:37:02 +0200
Subject: [PATCH] Constrain center in ol.interaction.TouchPan

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

diff --git a/src/ol/interaction/touchpaninteraction.js b/src/ol/interaction/touchpaninteraction.js
index c8c1dee132..e2bd7c4533 100644
--- a/src/ol/interaction/touchpaninteraction.js
+++ b/src/ol/interaction/touchpaninteraction.js
@@ -69,6 +69,7 @@ ol.interaction.TouchPan.prototype.handleTouchMove = function(mapBrowserEvent) {
     ol.coordinate.scale(center, view2DState.resolution);
     ol.coordinate.rotate(center, view2DState.rotation);
     ol.coordinate.add(center, view2DState.center);
+    center = view.constrainCenter(center);
     map.requestRenderFrame();
     view.setCenter(center);
   }
@@ -95,6 +96,7 @@ ol.interaction.TouchPan.prototype.handleTouchEnd =
         centerpx[0] - distance * Math.cos(angle),
         centerpx[1] - distance * Math.sin(angle)
       ]);
+      dest = view.constrainCenter(dest);
       view.setCenter(dest);
     }
     map.requestRenderFrame();