stage.show();



    //-------------------- PDF Exporting

    WritableImage img = new WritableImage(1000, 700);
    scene.snapshot(img);
    RenderedImage renderedImage = SwingFXUtils.fromFXImage(img, null);

    ImageData imgData = ImageDataFactory.create(SwingFXUtils.fromFXImage(img, null), null);

    //starts PDF writer
    PdfWriter writer = new PdfWriter("pdf.pdf");

    //Initialize PDF document
    PdfDocument pdf = new PdfDocument(writer);

    // Initialize document
    Document document = new Document(pdf);

    //Adds the graph to the document
    document.add(new Image(imgData));


    //Close document
    document.close();