class Layer;
class LightActor;
class MeshActor;
-class TextActor;
typedef IntrusivePtr<Actor> ActorPtr;
typedef IntrusivePtr<CameraActor> CameraActorPtr;
typedef IntrusivePtr<Layer> LayerPtr;
typedef IntrusivePtr<LightActor> LightActorPtr;
typedef IntrusivePtr<MeshActor> MeshActorPtr;
-typedef IntrusivePtr<TextActor> TextActorPtr;
} // namespace Internal