protected void setEyePosition(
      AnimationController animControl,
      View view,
      Position position,
      ViewInputAttributes.ActionAttributes attrib) {

    MoveToPositionAnimator posAnimator =
        (MoveToPositionAnimator) animControl.get(VIEW_ANIM_POSITION);

    double smoothing = attrib.getSmoothingValue();
    if (!(attrib.isEnableSmoothing() && this.isEnableSmoothing())) smoothing = 0.0;

    if (smoothing != 0.0) {

      double elevation =
          ((FlyViewLimits) view.getViewPropertyLimits())
              .limitEyeElevation(position, view.getGlobe());
      if (elevation != position.getElevation()) {
        position = new Position(position, elevation);
      }
      if (posAnimator == null) {
        posAnimator =
            new MoveToPositionAnimator(
                view.getEyePosition(),
                position,
                smoothing,
                OrbitViewPropertyAccessor.createEyePositionAccessor(view));
        animControl.put(VIEW_ANIM_POSITION, posAnimator);
      } else {
        posAnimator.setEnd(position);
        posAnimator.start();
      }
    }
    view.firePropertyChange(AVKey.VIEW, null, view);
  }
  protected void onVerticalTranslate(
      double translateChange,
      double totalTranslateChange,
      ViewInputAttributes.DeviceAttributes deviceAttributes,
      ViewInputAttributes.ActionAttributes actionAttribs) {
    this.stopGoToAnimators();
    double elevChange =
        -(totalTranslateChange * getScaleValueElevation(deviceAttributes, actionAttribs));
    View view = this.getView();
    Position position = view.getEyePosition();
    Position newPos = new Position(position, position.getElevation() + (elevChange));
    this.setEyePosition(uiAnimControl, view, newPos, actionAttribs);

    view.firePropertyChange(AVKey.VIEW, null, view);
  }