Code example for PointF

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	} 
	 
	Panner(VncCanvasActivity act, Handler hand) {
		activity = act;
		velocity = new PointF();
		handler = hand;
	} 
	 
	void stop() 
	{ 
		handler.removeCallbacks(this);
	} 
	 
	void start(float xv, float yv, VelocityUpdater update)
	{ 
		if (update == null)
			update = DefaultUpdater.instance;
		updater = update;
		velocity.x = xv;
		velocity.y = yv;