From 7d610bde7bbb97df41ccbb6ecea6d63c8dc8b8f0 Mon Sep 17 00:00:00 2001
From: Tom Payne <twpayne@gmail.com>
Date: Thu, 18 Apr 2013 21:02:53 +0200
Subject: [PATCH] Initialize all properties in constructor in interactions

---
 src/ol/interaction/dragrotateandzoominteraction.js | 4 ++--
 src/ol/interaction/touchrotateinteraction.js       | 2 +-
 src/ol/interaction/touchzoominteraction.js         | 2 +-
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/ol/interaction/dragrotateandzoominteraction.js b/src/ol/interaction/dragrotateandzoominteraction.js
index f7f64c0cc4..4e67f01c27 100644
--- a/src/ol/interaction/dragrotateandzoominteraction.js
+++ b/src/ol/interaction/dragrotateandzoominteraction.js
@@ -29,13 +29,13 @@ ol.interaction.DragRotateAndZoom = function(condition) {
    * @private
    * @type {number|undefined}
    */
-  this.lastAngle_;
+  this.lastAngle_ = undefined;
 
   /**
    * @private
    * @type {number|undefined}
    */
-  this.lastMagnitude_;
+  this.lastMagnitude_ = undefined;
 
 };
 goog.inherits(ol.interaction.DragRotateAndZoom, ol.interaction.Drag);
diff --git a/src/ol/interaction/touchrotateinteraction.js b/src/ol/interaction/touchrotateinteraction.js
index 166ff7111e..d7ffb146f5 100644
--- a/src/ol/interaction/touchrotateinteraction.js
+++ b/src/ol/interaction/touchrotateinteraction.js
@@ -38,7 +38,7 @@ ol.interaction.TouchRotate = function(opt_threshold) {
    * @private
    * @type {number|undefined}
    */
-  this.lastAngle_;
+  this.lastAngle_ = undefined;
 
   /**
    * @private
diff --git a/src/ol/interaction/touchzoominteraction.js b/src/ol/interaction/touchzoominteraction.js
index 8585bef32b..d68e2f853d 100644
--- a/src/ol/interaction/touchzoominteraction.js
+++ b/src/ol/interaction/touchzoominteraction.js
@@ -36,7 +36,7 @@ ol.interaction.TouchZoom = function() {
    * @private
    * @type {number|undefined}
    */
-  this.lastDistance_;
+  this.lastDistance_ = undefined;
 
   /**
    * @private