JavaFX 8 PathTransition

package javafx8_animation;

import javafx.animation.PathTransition;
import javafx.animation.PathTransition.OrientationType;
import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.input.MouseEvent;
import javafx.scene.paint.Color;
import javafx.scene.paint.CycleMethod;
import javafx.scene.paint.LinearGradient;
import javafx.scene.paint.Stop;
import javafx.scene.shape.ArcTo;
import javafx.scene.shape.ClosePath;
import javafx.scene.shape.LineTo;
import javafx.scene.shape.MoveTo;
import javafx.scene.shape.Path;
import javafx.scene.shape.Rectangle;
import javafx.stage.Stage;
import javafx.util.Duration;

/**
 *
 * @web java-buddy.blogspot.com
 */
public class JavaFX8_Animation extends Application {
    
    @Override
    public void start(Stage primaryStage) {
        Group root = new Group();
        Scene scene = new Scene(root, 500, 350, Color.BLACK);
        scene.setFill(Color.WHITE);
        
        Rectangle rect1 = new Rectangle(50, 50, 50, 50);
        rect1.setFill(Color.BLUEVIOLET);
        rect1.setStroke(Color.RED);
        rect1.setStrokeWidth(3);
        
        Path path1 = new Path();
        path1.getElements().add (new MoveTo (75f, 75f));
        path1.getElements().add (new LineTo (75f, 175f));
        path1.getElements().add (new LineTo (175f, 175f));
        path1.getElements().add (new LineTo (175f, 75f));
        path1.getElements().add(new ClosePath());
        
        PathTransition pathTransition1 = new PathTransition();
        pathTransition1.setDuration(Duration.millis(4000));
        pathTransition1.setNode(rect1);
        pathTransition1.setPath(path1);
        pathTransition1.setOrientation(OrientationType.ORTHOGONAL_TO_TANGENT);
        pathTransition1.setCycleCount(2);
        pathTransition1.setAutoReverse(true);

        rect1.addEventHandler(MouseEvent.MOUSE_CLICKED, (MouseEvent event) -> {
            pathTransition1.play();
        });

        Stop[] stopsTransparence = new Stop[] { 
            new Stop(0, Color.color(0.0, 1.0, 1.0 ,1.0)), 
            new Stop(1, Color.color(0.0, 1.0, 1.0 ,0.0))};
        LinearGradient linearGradientTransparence = 
                new LinearGradient(0, 0, 1, 0, true, 
                        CycleMethod.NO_CYCLE, stopsTransparence);
        
        Rectangle rect2 = new Rectangle(150, 150, 50, 50);
        rect2.setFill(linearGradientTransparence);
        rect2.setStroke(Color.BLUE);
        rect2.setStrokeWidth(3);
        
        MoveTo moveTo = new MoveTo();
        moveTo.setX(175f);
        moveTo.setY(175f);
        
        ArcTo arcTo = new ArcTo();
        arcTo.setX(375f);
        arcTo.setY(175f);
        arcTo.setRadiusX(100f);
        arcTo.setRadiusY(50f);
        
        Path path2 = new Path();
        path2.getElements().add (moveTo);
        path2.getElements().add (arcTo);

        PathTransition pathTransition2 = new PathTransition();
        pathTransition2.setDuration(Duration.millis(4000));
        pathTransition2.setNode(rect2);
        pathTransition2.setPath(path2);
        pathTransition2.setOrientation(OrientationType.ORTHOGONAL_TO_TANGENT);
        pathTransition2.setCycleCount(2);
        pathTransition2.setAutoReverse(true);

        rect2.addEventHandler(MouseEvent.MOUSE_CLICKED, (MouseEvent event) -> {
            pathTransition2.play();
        });
        
        root.getChildren().addAll(rect1, rect2);

        primaryStage.setTitle("java-buddy.blogspot.com");
        primaryStage.setScene(scene);
        primaryStage.show();

    }

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        launch(args);
    }
    
}