public void setZoomSmooth(double zoom) {
private void setZoomSmooth(double zoom) {
    public void setZoomSmooth(double zoom) {        if (zoom > 0) {            if (smoothZoomer != null) {                smoothZoomer.stopZooming();            }            smoothZoomer = new SmoothZoomer(this, this.zoom, zoom);            smoothZoomer.start();        }    }