Use the new JavaFX animation API in Java 13 to achieve more complex animation effects

Use the new JavaFX animation API in Java 13 to achieve more complex animation effects

Overview:
As JavaFX continues to develop in recent years, Java 13 introduces some improvements to JavaFX animations New API. These new APIs provide more powerful and flexible ways to achieve more complex and attractive animation effects. In this article, we will explore these new APIs and show through example code how to use them to create dynamic interactive effects.

Introduction to JavaFX Animation API:
The JavaFX Animation API was developed to create smooth and attractive animation effects in GUI applications. In JavaFX, animation consists of Timeline and KeyFrame. The timeline defines the duration and number of repetitions of the animation, and keyframes define the changes that occur at different points in the animation.

New APIs in Java 13:
Java 13 introduces some new APIs that improve JavaFX animations, including PathTransition, Motor, Plane, CurveTo, ArcTo, SplineTo, etc. These new APIs can be used to create more specific animation effects.

Sample code:
Here is a sample code that uses the new API in Java 13 to implement path transformation animation:

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);
    }
}

In this example, we create a circle and a path. Then, we use PathTransition to move the circle along the path. This animation will complete in 2 seconds and will loop infinitely. We can also use the setAutoReverse method to set whether the animation automatically plays in reverse.

Conclusion:
The new JavaFX animation API in Java 13 provides more features that can help developers create more complex and attractive animation effects. In this article, we presented an example of creating a path transformation animation using the JavaFX animation API. Hopefully this example will give you a starting point on how to use the new JavaFX animation API. You can explore these new APIs and use them to implement other types of animation effects.

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