JavaFX 2.0: Transition along dynamic path

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package javafx_path; import javafx.animation.PathTransition; import javafx.animation.PathTransitionBuilder; import javafx.application.Application; import javafx.event.EventHandler; import javafx.scene.Group; import javafx.scene.Scene; import javafx.scene.image.Image; import javafx.scene.image.ImageView; import javafx.scene.input.MouseEvent; import javafx.scene.paint.Color; import javafx.scene.shape.LineTo; import javafx.scene.shape.MoveTo; import javafx.scene.shape.Path; import javafx.stage.Stage; import javafx.util.Duration; /**  *  * @web http://jaypthakkar.blogspot.in/  */ public class JavaFX_Path extends Application {           PathTransition pathTransition;           /**      * @param args the command line arguments      */     public static void main(String[] args) {         launch(args);     }           @Override     public void start(Stage primaryStage) {         primaryStage.setTitle("java-buddy.blogspot.com");         Group root = new Group();         Scene scene = new Scene(root, 400, 300, Color.WHITE);                   final Image image1 = new Image(getClass().getResourceAsStream("duke_44x80.png"));         final ImageView imageView = new ImageView();         imageView.setImage(image1);                   final Path path = new Path();         path.setStrokeWidth(1);         path.setStroke(Color.BLACK);                   //Mouse button pressed - clear path and start from the current X, Y.         scene.onMousePressedProperty().set(new EventHandler<MouseEvent>(){             @Override             public void handle(MouseEvent event) {                 path.getElements().clear();                 path.getElements().add(new MoveTo(event.getX(), event.getY()));             }         });         //Mouse dragged - add current point.         scene.onMouseDraggedProperty().set(new EventHandler<MouseEvent>(){             @Override             public void handle(MouseEvent event) {                 path.getElements().add(new LineTo(event.getX(), event.getY()));             }         });                           //Mouse button released,  finish path.         scene.onMouseReleasedProperty().set(new EventHandler<MouseEvent>(){             @Override             public void handle(MouseEvent event) {                 pathTransition = PathTransitionBuilder.create()                         .node(imageView)                         .path(path)                         .duration(Duration.millis(5000))                         .orientation(PathTransition.OrientationType.ORTHOGONAL_TO_TANGENT)                         .cycleCount(1)                         .build();                 pathTransition.play();             }         });         root.getChildren().add(imageView);         root.getChildren().add(path);         primaryStage.setScene(scene);         primaryStage.show();     } }