如何在循环绘制每个形状后刷新javaFX组？

import javafx.application.Application;
import javafx.application.Platform;
import javafx.scene.Scene;
import javafx.scene.canvas.Canvas;
import javafx.scene.canvas.GraphicsContext;
import javafx.scene.layout.Pane;
import javafx.stage.Stage;

public class ShapeDrawingApp extends Application {

    private static final int WIDTH = 800;
    private static final int HEIGHT = 600;

    @Override
    public void start(Stage primaryStage) {
        Pane root = new Pane();
        Canvas canvas = new Canvas(WIDTH, HEIGHT);
        root.getChildren().add(canvas);

        GraphicsContext gc = canvas.getGraphicsContext2D();

        new Thread(() -> {
            for (int i = 0; i < 10; i++) {
                // 绘制每个形状
                gc.strokeRect(i * 50, i * 50, 50, 50);

                // 刷新JavaFX组件
                Platform.runLater(() -> {
                    GraphicsContext newGC = canvas.getGraphicsContext2D();
                    newGC.clearRect(0, 0, WIDTH, HEIGHT);
                });

                try {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }).start();

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

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