std::vector< TrackPtr > foreground_tracks_
const std::vector< TrackPtr > & GetBackgroundTracks() const
Get the background track objects
void AddBackgroundTrack(TrackPtr track)
Add a background track object
void AddForegroundTrack(TrackPtr track)
Add a foreground track object
std::vector< TrackPtr > & GetBackgroundTracks()
Get the background track objects
std::vector< TrackPtr > & GetForegroundTracks()
Get the foreground track objects
const std::vector< TrackPtr > & GetForegroundTracks() const
Get the foreground track objects
std::vector< TrackPtr > background_tracks_
std::shared_ptr< Track > TrackPtr
std::shared_ptr< const Scene > SceneConstPtr
std::shared_ptr< Scene > ScenePtr