private void OnTrackingFound()
        {
            //hide = new Hide ();
            //hide.invisible();

            hide.GetComponent <Hide> ().visible();
            AudioSource Ambient = GetComponent <AudioSource> ();

            Ambient.Play();

            Renderer[] rendererComponents = GetComponentsInChildren <Renderer>(true);
            Collider[] colliderComponents = GetComponentsInChildren <Collider>(true);

            // Enable rendering:
            foreach (Renderer component in rendererComponents)
            {
                component.enabled = true;
            }

            // Enable colliders:
            foreach (Collider component in colliderComponents)
            {
                component.enabled = true;
            }

            Debug.Log("Trackable " + mTrackableBehaviour.TrackableName + " found");
        }