尝试使用GraphicsContext方法公共空填充和strokepolygon来绘制正则多边形

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 RegularPolygonExample extends Application {

    @Override
    public void start(Stage primaryStage) {
        Group root = new Group();
        Canvas canvas = new Canvas(400, 400);
        GraphicsContext gc = canvas.getGraphicsContext2D();

        int sides = 6; // 正六边形
        double centerX = 200; // 多边形中心点的x坐标
        double centerY = 200; // 多边形中心点的y坐标
        double radius = 100; // 多边形的半径

        double[] xPoints = new double[sides];
        double[] yPoints = new double[sides];

        for (int i = 0; i < sides; i++) {
            double angle = 2 * Math.PI * i / sides;
            xPoints[i] = centerX + radius * Math.cos(angle);
            yPoints[i] = centerY + radius * Math.sin(angle);
        }

        gc.setFill(Color.RED);
        gc.fillPolygon(xPoints, yPoints, sides);

        gc.setStroke(Color.BLACK);
        gc.setLineWidth(2);
        gc.strokePolygon(xPoints, yPoints, sides);

        root.getChildren().add(canvas);
        primaryStage.setScene(new Scene(root, 400, 400));
        primaryStage.show();
    }

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