我可以将圆的内部和外部分开吗？我需要一个可点击的区域，只在使用 javafx 的笔画上

如何解决我可以将圆的内部和外部分开吗？我需要一个可点击的区域，只在使用 javafx 的笔画上

我想构建一个程序，它可以在一个圆形的三角形上找到角度和不同的东西。 我构建了圆圈，我可以通过左键单击添加点并通过右键单击删除它们，但我希望只有当它们在圆圈笔划上时才添加这些点。我不知道如何将笔触与 AnchorPane 的其余部分分开。

import javafx.application.Application;
import javafx.collections.ObservableList;
import javafx.fxml.FXMLLoader;
import javafx.scene.Node;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.input.MouseButton;
import javafx.scene.layout.AnchorPane;
import javafx.scene.paint.Color;
import javafx.scene.paint.Paint;
import javafx.scene.shape.Circle;
import javafx.scene.shape.StrokeType;
import javafx.stage.Stage;
import java.io.FileInputStream;
import java.io.IOException;

public class Main extends Application {

    FXMLLoader fxmlLoader = new FXMLLoader();
    Parent parent = fxmlLoader.load(new FileInputStream("Circle.fxml"));
    AnchorPane root = (AnchorPane) parent.lookup("#root");

    public Main() throws IOException {
    }

    private Circle makeCircle(double drawX,double drawY) {
        Circle circle = new Circle(drawX,drawY,5,Color.CORAL);
        circle.setStroke(Color.BLACK);
        return circle;
    }

    private void deleteCircle(double deleteX,double deleteY) {


        ObservableList<Node> list = root.getChildren();
        for (int i = list.size() - 1; i >= 0; i--) {
            Node circle = list.get(i);


            if (circle instanceof Circle && circle.contains(deleteX,deleteY)) {
                root.getChildren().remove(circle);
                break;
            }
        }
    }
    public void start(final Stage primaryStage) throws Exception {

        Scene scene = new Scene(parent);
        primaryStage.setScene(scene);
        primaryStage.show();
        Label label1 = (Label) parent.lookup("#label1");
        Label label2 = (Label) parent.lookup("#label2");
        Label label3 = (Label) parent.lookup("#label3");

        Circle circleBig = new Circle();
        circleBig.setRadius(200);
        circleBig.setCenterY(175);
        circleBig.setCenterX(350);
        circleBig.setFill(Paint.valueOf("#FFFF"));
        circleBig.setStrokeWidth(4);
        circleBig.setStrokeMiterLimit(10);
        circleBig.setStrokeType(StrokeType.CENTERED);
        circleBig.setStroke(Color.valueOf("0x000000"));

        root.getChildren().add(circleBig);

        root.setOnMouseClicked(e -> {
            double drawX = e.getX();
            double drawY = e.getY();
            if (e.getButton() == MouseButton.PRIMARY) {
                Circle circle = makeCircle(drawX,drawY);
                root.getChildren().add(circle);
            } else if (e.getButton() == MouseButton.SECONDARY) {
                deleteCircle(drawX,drawY);
            }
        });
    }
}