JavaFX Polygon create a stop sign

import javafx.application.Application;
import javafx.collections.ObservableList;
import javafx.scene.Scene;
import javafx.stage.Stage;
import javafx.scene.paint.Color;
import javafx.scene.text.Text;
import javafx.scene.text.Font;
import javafx.scene.text.FontWeight;
import javafx.scene.layout.StackPane;
import javafx.scene.shape.Polygon;

public class Main extends Application {
   @Override//from   w  ww.ja va  2s  .c o m
   public void start(Stage primaryStage) {
      // Create a stack pane
      StackPane stackPane = new StackPane();

      // Create a polygon and set its properties
      Polygon polygon = new Polygon();
      stackPane.getChildren().add(polygon);
      polygon.setFill(Color.RED);
      polygon.setRotate(20);
      ObservableList<Double> list = polygon.getPoints();

      final double WIDTH = 200, HEIGHT = 200;
      double centerX = WIDTH / 2, centerY = HEIGHT / 2;
      double radius = Math.min(WIDTH, HEIGHT) * 0.4;

      // Add points to polygon list
      for (int i = 0; i < 8; i++) {
         list.add(centerX + radius * Math.cos(2 * i * Math.PI / 8));
         list.add(centerY - radius * Math.sin(2 * i * Math.PI / 8));
      }

      // Create a text and set its properties
      Text text = new Text("STOP");
      text.setFont(Font.font("Times new Roman", FontWeight.BOLD, 40));
      text.setFill(Color.WHITE);
      stackPane.getChildren().add(text);

      // Create a scene and place it in the stage
      Scene scene = new Scene(stackPane, WIDTH, HEIGHT);
      primaryStage.setTitle("java2s.com");
      primaryStage.setScene(scene);
      primaryStage.show();
   }
}