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

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

JavaFX is a cross-platform framework for building rich client applications, which provides a rich set of graphics libraries and User interface components. The animation API in JavaFX allows us to easily create various animation effects to make our applications more vivid and attractive. This article will introduce the new JavaFX animation APIs in Java 13 and show how to use them to achieve animation effects through code examples.

First, we need to add the JavaFX library dependency to the project. For Java 13 and above, JavaFX has been separated from the JDK and becomes an independent library. We can introduce the JavaFX library through build tools such as Maven or Gradle, which will not be introduced in detail here.

This article will take a simple animation of a blue circle moving in the window as an example to show how to use the JavaFX animation API. First, we need to create the main class of a JavaFX application, the code is as follows:

import javafx.animation.TranslateTransition;
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.layout.StackPane;
import javafx.scene.paint.Color;
import javafx.scene.shape.Circle;
import javafx.stage.Stage;
import javafx.util.Duration;

public class AnimationApp extends Application {

    @Override
    public void start(Stage primaryStage) {
        // 创建一个圆形对象
        Circle circle = new Circle(50, Color.BLUE);

        // 创建一个平移动画
        TranslateTransition translateTransition = new TranslateTransition(Duration.seconds(2), circle);

        // 设置平移动画的起始位置和结束位置
        translateTransition.setFromX(0);
        translateTransition.setToX(300);

        // 设置循环播放动画
        translateTransition.setCycleCount(TranslateTransition.INDEFINITE);
        translateTransition.setAutoReverse(true);

        // 创建一个布局容器
        StackPane root = new StackPane();
        root.getChildren().add(circle);

        // 创建一个场景
        Scene scene = new Scene(root, 400, 400);

        // 设置窗口标题和场景
        primaryStage.setTitle("Animation Demo");
        primaryStage.setScene(scene);

        // 显示窗口
        primaryStage.show();

        // 开始动画
        translateTransition.play();
    }

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

In the above code, we first create a circular object and define its radius and color. Next, we create a translation animation TranslateTransition and specify the duration of the animation. By setting the starting position and ending position, we can move the circular object in the window. By setting the setCycleCount method, the animation can be played in a loop, and by setting the setAutoReverse method, the animation can be automatically played in reverse after each playback. Next, we create a layout container StackPane and add the circle object as its child node. Finally, we create a sceneScene, with the layout container as its root node, and set the window's title and scene. Display the window by calling the window's show method, and start the animation by calling the animation's play method.

The above code is just a simple example. The JavaFX animation API also provides many other functions, such as scaling animation, rotation animation, transparency animation, etc. We can achieve more complex and sophisticated animation effects by setting various properties and parameters of animation.

To summarize, this article introduces the new JavaFX animation APIs in Java 13, and shows how to use them to achieve animation effects through a simple code example. By properly utilizing JavaFX's animation API, we can add vivid and attractive animation effects to our applications to enhance user experience. I hope readers can benefit from it and apply it to relevant scenarios in actual development.

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