From b6a6ba95ccfc64cd000ca23db0e421ced6d0c38c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=89ric=20Lemoine?= <eric.lemoine@gmail.com>
Date: Wed, 10 Apr 2013 15:20:00 +0200
Subject: [PATCH] Touch zoom interaction requests render frames

---
 src/ol/interaction/touchzoominteraction.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/ol/interaction/touchzoominteraction.js b/src/ol/interaction/touchzoominteraction.js
index 63558750a1..4d378a7c80 100644
--- a/src/ol/interaction/touchzoominteraction.js
+++ b/src/ol/interaction/touchzoominteraction.js
@@ -76,6 +76,7 @@ ol.interaction.TouchZoom.prototype.handleTouchMove =
   var anchor = map.getCoordinateFromPixel(centroid);
 
   // scale, bypass the resolution constraint
+  map.requestRenderFrame();
   ol.interaction.Interaction.zoomWithoutConstraints(
       map, view, view.getResolution() * scaleDelta, anchor);
 
@@ -110,9 +111,11 @@ ol.interaction.TouchZoom.prototype.handleTouchEnd =
 ol.interaction.TouchZoom.prototype.handleTouchStart =
     function(mapBrowserEvent) {
   if (this.targetTouches.length >= 2) {
-    var view = mapBrowserEvent.map.getView();
+    var map = mapBrowserEvent.map;
+    var view = map.getView();
     this.lastDistance_ = undefined;
     this.lastScaleDelta_ = 1;
+    map.requestRenderFrame();
     view.setHint(ol.ViewHint.INTERACTING, 1);
     return true;
   } else {