public virtual bool range(IObs ob, double range) { return(ob.ditanceSq(this) < range); }
public void unsubscribe(IObs observer) { observers.Remove(observer); observer.setObservable(null); }
public Observable2(IObs obj) { obj.Subscribe(this); }
public void subscribe(IObs observer) { observers.Add(observer); observer.setObservable(this); }