     
     import flash.display.BitmapData;
     import flash.utils.Dictionary;
+    
+    import mx.olap.aggregators.MaxAggregator;
     
     use namespace minko_math;
     

                _initialized[nodeId] = INIT_LOCAL_TO_WORLD;
                root.localToWorldTransformChanged.execute(root, rootLocalToWorld);
            }
            
            for (; nodeId < numNodes; ++nodeId)
            {
                var localToWorld 	: Matrix4x4	= _localToWorldTransforms[nodeId];
                var numChildren		: uint		= _numChildren[nodeId];

                        var child	: ISceneNode	= _idToNode[childId];
                        
                        childLocalToWorld
                            .copyFrom(childTransform)
                            .append(localToWorld);
                        
                        childTransform._hasChanged = false;
