+ private static readonly Stage instance = Stage.GetCurrent();
+
+ public static Stage Instance
+ {
+ get
+ {
+ return instance;
+ }
+ }
+
+ public Layer GetDefaultLayer()
+ {
+ return this.GetRootLayer();
+ }
+
+ public void AddLayer(Layer layer)
+ {
+ this.Add( (Actor)layer );
+ }
+
+ public void RemoveLayer(Layer layer)
+ {
+ this.Remove( (Actor)layer );
+ }
+
+