javafx实现汽车雨刷代码

以下是一个简单的JavaFX汽车雨刷代码示例：

import javafx.animation.KeyFrame;
import javafx.animation.KeyValue;
import javafx.animation.Timeline;
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.Rectangle;
import javafx.stage.Stage;
import javafx.util.Duration;

public class CarWindshieldWiper extends Application {
    private static final double WIDTH = 800;
    private static final double HEIGHT = 600;
    private static final double WIPER_WIDTH = 100;
    private static final double WIPER_HEIGHT = 20;
    private static final double RAINDROP_RADIUS = 3;

    private Rectangle windshield;
    private Rectangle wiper;
    private Group rainGroup;

    @Override
    public void start(Stage primaryStage) throws Exception {
        Group root = new Group();

        // 创建风挡和雨刷
        windshield = new Rectangle(0, 0, WIDTH, HEIGHT);
        windshield.setFill(Color.LIGHTGRAY);
        wiper = new Rectangle(WIDTH / 2 - WIPER_WIDTH / 2, HEIGHT / 2 - WIPER_HEIGHT / 2, WIPER_WIDTH, WIPER_HEIGHT);
        wiper.setFill(Color.DARKGRAY);
        root.getChildren().addAll(windshield, wiper);

        // 创建雨滴
        rainGroup = new Group();
        for (int i = 0; i < 50; i++) {
            Circle raindrop = new Circle(Math.random() * WIDTH, Math.random() * HEIGHT, RAINDROP_RADIUS);
            raindrop.setFill(Color.BLUE);
            rainGroup.getChildren().add(raindrop);
        }
        root.getChildren().add(rainGroup);

        // 创建动画
        Timeline timeline = new Timeline();
        timeline.setCycleCount(Timeline.INDEFINITE);
        KeyValue keyValue = new KeyValue(wiper.xProperty(), WIDTH / 2 + WIPER_HEIGHT / 2);
        KeyFrame keyFrame = new KeyFrame(Duration.seconds(2), keyValue);
        timeline.getKeyFrames().add(keyFrame);
        timeline.setAutoReverse(true);
        timeline.play();

        // 雨滴动画
        Timeline rainTimeline = new Timeline();
        rainTimeline.setCycleCount(Timeline.INDEFINITE);
        for (int i = 0; i < rainGroup.getChildren().size(); i++) {
            Circle raindrop = (Circle) rainGroup.getChildren().get(i);
            KeyValue kv = new KeyValue(raindrop.centerYProperty(), HEIGHT + RAINDROP_RADIUS);
            KeyFrame kf = new KeyFrame(Duration.seconds(Math.random() * 2), kv);
            rainTimeline.getKeyFrames().add(kf);
        }
        rainTimeline.play();

        Scene scene = new Scene(root, WIDTH, HEIGHT);
        primaryStage.setScene(scene);
        primaryStage.show();
    }

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

这个示例创建了一个带有风挡和雨刷的汽车场景，并使用JavaFX的动画API模拟雨刷和雨滴的运动。