function updateFunction(clampedPosition) {
    const updatedClampedPosition = ellipsoid.cartographicToCartesian(
      clampedPosition,
      owner._clampedPosition,
    );

    if (isHeightReferenceRelative(owner._heightReference)) {
      if (owner._mode === SceneMode.SCENE3D) {
        clampedPosition.height += position.height;
        ellipsoid.cartographicToCartesian(
          clampedPosition,
          updatedClampedPosition,
        );
      } else {
        updatedClampedPosition.x += position.height;
      }
    }

    owner._clampedPosition = updatedClampedPosition;
  }
Gets or sets the {@link SplitDirection} of this billboard.
@memberof Billboard.prototype
@type {SplitDirection}
@default {@link SplitDirection.NONE}