public:
Speaker (int, const PBD::AngularVector& position);
Speaker (const Speaker &);
Speaker& operator= (const Speaker &);
public:
Speaker (int, const PBD::AngularVector& position);
Speaker (const Speaker &);
Speaker& operator= (const Speaker &);
void move (const PBD::AngularVector& new_position);
const PBD::CartesianVector& coords() const { return _coords; }
void move (const PBD::AngularVector& new_position);
const PBD::CartesianVector& coords() const { return _coords; }