     _.extend(@, new EventMixin())
 
     @fullScreen = false
-    @mode = constants.MODE_OXALIS
+    @mode = constants.MODE_PLANE_TRACING
 
     @model = new Model()
 


  centerActiveNode : ->

    if @mode is constants.MODE_OXALIS
      @planeController.centerActiveNode()
    else
      @arbitraryController.centerActiveNode()


  toggleArbitraryView : ->

    if @mode is constants.MODE_PLANE_TRACING and constants.ALLOWED_ARBITRARY in @allowedModes
      @planeController.stop()
      @arbitraryController.start()
      @propagateMode(constants.MODE_ARBITRARY)
    else if @mode is constants.MODE_ARBITRARY and constants.ALLOWED_OXALIS in @allowedModes
      @arbitraryController.stop()
      @planeController.start()
      @propagateMode(constants.MODE_PLANE_TRACING)


  propagateMode : (mode) ->
