Animace

public class FXMLDocumentController implements Initializable {

    @FXML
    private Slider spinnerTrvání;
    @FXML
    private CheckBox cbAutoReverse;
    @FXML
    private CheckBox cbPrizpusobeniSmeru;
    @FXML
    private CheckBox cbOtoceniNaKonci;
    @FXML
    private Pane pane;

    private ObservableList<Node> tvary;
    private ObservableList<Circle> body;
    private Path path;
    private PathTransition pt;
    @FXML
    private Button stopBtn;
    private final Image im = new Image("obrazky/lokomotiva.png");
    private ImageView iv;

    @Override
    public void initialize(URL url, ResourceBundle rb) {
        cbAutoReverse.setSelected(true);
        cbPrizpusobeniSmeru.setSelected(true);
        tvary = pane.getChildren();
        body = FXCollections.observableArrayList();
        stopBtn.setDisable(true);
        iv = new ImageView(im);
    }

    @FXML
    private void vymazVseButton(ActionEvent event) {
    }

    @FXML
    private void startButton(ActionEvent event) {
        if (body.size() > 1) {
            if (iv.getImage() != null) {
                tvary.remove(iv);
            }
            pt = new PathTransition(Duration.seconds(spinnerTrvání.getValue()), path);
            iv.setFitHeight(60);
            iv.setFitWidth(60);
            pt.setNode(iv);

            if (cbAutoReverse.isSelected()) {
                pt.setAutoReverse(true);
            } else {
                pt.setAutoReverse(false);
            }

            if (cbPrizpusobeniSmeru.isSelected()) {
                pt.setOrientation(PathTransition.OrientationType.ORTHOGONAL_TO_TANGENT);
            } else {
                pt.setOrientation(PathTransition.OrientationType.NONE);
            }

            if (cbOtoceniNaKonci.isSelected()) {
                pt.setCycleCount(2);
            } else {
                pt.setCycleCount(1);
            }

            tvary.add(iv);
            pt.play();
            stopBtn.setDisable(false);

        }

    }

    @FXML
    private void stopButton(ActionEvent event) {
        pt.stop();
        tvary.remove(iv);
        stopBtn.setDisable(true);
    }

    @FXML
    private void mouseClicked(MouseEvent event) {
        if (event.getButton() == MouseButton.PRIMARY) {
            Circle c = new Circle(event.getX(), event.getY(), 5);
            c.setStroke(Color.BLACK);
            c.setFill(Color.AQUAMARINE);

            c.setOnMouseClicked(value -> {
                if (value.getButton() == MouseButton.SECONDARY) {
                    tvary.clear();
                    body.remove(c);
                    if (body.size() > 1) {
                        udelejDrahu();
                    }
                    tvary.addAll(body);
                }
            });

            tvary.add(c);
            body.add(c);

            if (body.size() > 1) {
                udelejDrahu();
            }

        }
    }

    private void udelejDrahu() {
        path = new Path();

        MoveTo mt = new MoveTo(body.get(0).getCenterX(),body.get(0).getCenterY());
        path.getElements().add(mt);

        for (int i = 1; i < body.size(); i++) {
            LineTo lt = new LineTo(body.get(i).getCenterX(),body.get(i).getCenterY());
            path.getElements().add(lt);
            Line line = new Line(body.get(i-1).getCenterX(),body.get(i-1).getCenterY(),
                    body.get(i).getCenterX(),body.get(i).getCenterY());
            line.setStroke(Color.BLUE);
            line.getStrokeDashArray().addAll(10d, 10d);
            tvary.add(line);
        }
    }

}