使用Java 13中的新的JavaFX动画API来实现更复杂的动画效果

import javafx.animation.PathTransition;
import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.paint.Color;
import javafx.scene.shape.Circle;
import javafx.scene.shape.LineTo;
import javafx.scene.shape.MoveTo;
import javafx.scene.shape.Path;
import javafx.stage.Stage;
import javafx.util.Duration;

public class PathTransitionExample extends Application {

    @Override
    public void start(Stage primaryStage) {
        Group root = new Group();
        Scene scene = new Scene(root, 400, 400);

        // 创建一个圆形
        Circle circle = new Circle(20);
        circle.setFill(Color.RED);

        // 创建一个路径
        Path path = new Path();
        path.getElements().add(new MoveTo(50, 50));
        path.getElements().add(new LineTo(350, 350));

        // 创建路径转换动画
        PathTransition pathTransition = new PathTransition();
        pathTransition.setDuration(Duration.seconds(2));
        pathTransition.setNode(circle);
        pathTransition.setPath(path);
        pathTransition.setCycleCount(PathTransition.INDEFINITE);
        pathTransition.setAutoReverse(true);

        // 添加圆形到根节点
        root.getChildren().add(circle);

        // 开始动画
        pathTransition.play();

        primaryStage.setTitle("Path Transition Example");
        primaryStage.setScene(scene);
        primaryStage.show();
    }

    public static void main(String[] args) {
        launch(args);
    }
}