如何在JavaFX上绘制网格和绘制网格边角？

import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.canvas.Canvas;
import javafx.scene.canvas.GraphicsContext;
import javafx.scene.paint.Color;
import javafx.stage.Stage;

public class GridDrawing extends Application {

    private static final int GRID_SIZE = 10;
    private static final int CELL_SIZE = 50;
    private static final int WIDTH = GRID_SIZE * CELL_SIZE;
    private static final int HEIGHT = GRID_SIZE * CELL_SIZE;

    @Override
    public void start(Stage primaryStage) {
        primaryStage.setTitle("Grid Drawing");

        Group root = new Group();
        Canvas canvas = new Canvas(WIDTH, HEIGHT);
        GraphicsContext gc = canvas.getGraphicsContext2D();

        drawGrid(gc);
        drawGridCorners(gc);

        root.getChildren().add(canvas);
        primaryStage.setScene(new Scene(root));
        primaryStage.show();
    }

    private void drawGrid(GraphicsContext gc) {
        gc.setStroke(Color.BLACK);
        gc.setLineWidth(1.0);

        for (int i = 0; i <= GRID_SIZE; i++) {
            double x = i * CELL_SIZE;
            double y = i * CELL_SIZE;

            // 绘制垂直线
            gc.strokeLine(x, 0, x, HEIGHT);

            // 绘制水平线
            gc.strokeLine(0, y, WIDTH, y);
        }
    }

    private void drawGridCorners(GraphicsContext gc) {
        gc.setFill(Color.RED);

        for (int i = 0; i <= GRID_SIZE; i++) {
            for (int j = 0; j <= GRID_SIZE; j++) {
                double x = i * CELL_SIZE;
                double y = j * CELL_SIZE;

                // 绘制网格边角
                gc.fillRect(x - 2, y - 2, 4, 4);
            }
        }
    }

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