获取JavaFX窗口的像素颜色

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.layout.Pane;
import javafx.scene.paint.Color;
import javafx.stage.Stage;

public class Main extends Application {

    @Override
    public void start(Stage primaryStage) {
        Pane root = new Pane();
        Scene scene = new Scene(root, 800, 600);
        primaryStage.setScene(scene);
        primaryStage.show();
    }

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

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.layout.Pane;
import javafx.scene.paint.Color;
import javafx.stage.Stage;

public class Main extends Application {

    @Override
    public void start(Stage primaryStage) {
        Pane root = new Pane();
        Scene scene = new Scene(root, 800, 600);
        primaryStage.setScene(scene);

        scene.setOnMouseClicked(event -> {
            int x = (int) event.getSceneX();
            int y = (int) event.getSceneY();
            Color pixelColor = scene.snapshot(null).getPixelReader().getColor(x, y);
            System.out.println("Pixel color at (" + x + ", " + y + "): " + pixelColor);
        });

        primaryStage.show();
    }

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