Initialize all member variables in constructor

src/ol/base/mapbrowserevent.js

@@ -23,17 +23,16 @@ ol.MapBrowserEvent = function(type, map, browserEvent) {
    */
   this.browserEvent = browserEvent;
 
+  /**
+   * @private
+   * @type {ol.Coordinate|undefined}
+   */
+  this.coordinate_ = undefined;
+
 };
 goog.inherits(ol.MapBrowserEvent, ol.MapEvent);
 
 
-/**
- * @private
- * @type {ol.Coordinate|undefined}
- */
-ol.MapBrowserEvent.prototype.coordinate_;
-
-
 /**
  * @return {ol.Coordinate|undefined} Coordinate.
  */

src/ol/control/mouseposition.js

@@ -49,6 +49,12 @@ ol.control.MousePosition =
    */
   this.undefinedHTML_ = opt_undefinedHTML || '';
 
+  /**
+   * @private
+   * @type {ol.TransformFunction}
+   */
+  this.transform_ = ol.Projection.identityTransform;
+
   goog.events.listen(map,
       ol.Object.getChangedEventType(ol.MapProperty.PROJECTION),
       this.handleMapProjectionChanged, false, this);
@@ -65,13 +71,6 @@ ol.control.MousePosition =
 goog.inherits(ol.control.MousePosition, ol.Control);
 
 
-/**
- * @private
- * @type {ol.TransformFunction}
- */
-ol.control.MousePosition.prototype.transform_;
-
-
 /**
  * @inheritDoc
  */

src/ol/interaction/altdragrotate.js

@@ -11,18 +11,19 @@ goog.require('ol.interaction.Drag');
  * @param {ol.interaction.Constraints} constraints Constraints.
  */
 ol.interaction.AltDragRotate = function(constraints) {
+
   goog.base(this, constraints);
+
+  /**
+   * @private
+   * @type {number}
+   */
+  this.startRotation_ = 0;
+
 };
 goog.inherits(ol.interaction.AltDragRotate, ol.interaction.Drag);
 
 
-/**
- * @private
- * @type {number}
- */
-ol.interaction.AltDragRotate.prototype.startRotation_;
-
-
 /**
  * @inheritDoc
  */

src/ol/interaction/shiftdragrotateandzoom.js

@@ -13,25 +13,25 @@ goog.require('ol.interaction.Drag');
  * @param {ol.interaction.Constraints} constraints Constraints.
  */
 ol.interaction.ShiftDragRotateAndZoom = function(constraints) {
+
   goog.base(this, constraints);
+
+  /**
+   * @private
+   * @type {number}
+   */
+  this.startRatio_ = 0;
+
+  /**
+   * @private
+   * @type {number}
+   */
+  this.startRotation_ = 0;
+
 };
 goog.inherits(ol.interaction.ShiftDragRotateAndZoom, ol.interaction.Drag);
 
 
-/**
- * @private
- * @type {number}
- */
-ol.interaction.ShiftDragRotateAndZoom.prototype.startRatio_;
-
-
-/**
- * @private
- * @type {number}
- */
-ol.interaction.ShiftDragRotateAndZoom.prototype.startRotation_;
-
-
 /**
  * @inheritDoc
  */