如何在JavaFX中创建自定义ProgressIndicator？

import javafx.scene.layout.Region;
import javafx.scene.paint.Color;
import javafx.scene.shape.Circle;

public class CustomProgressIndicator extends Region {
    private Circle progressCircle;

    public CustomProgressIndicator() {
        progressCircle = new Circle();
        progressCircle.setStroke(Color.BLUE);
        progressCircle.setFill(Color.TRANSPARENT);
        progressCircle.setStrokeWidth(5);
        getChildren().add(progressCircle);
    }

    @Override
    protected void layoutChildren() {
        super.layoutChildren();
        double centerX = getWidth() / 2;
        double centerY = getHeight() / 2;
        double radius = Math.min(getWidth(), getHeight()) / 2 - progressCircle.getStrokeWidth() / 2;
        progressCircle.setCenterX(centerX);
        progressCircle.setCenterY(centerY);
        progressCircle.setRadius(radius);
    }

    public void setProgress(double progress) {
        progressCircle.setLength(progress * 360);
    }

    public double getProgress() {
        return progressCircle.getLength() / 360;
    }

    public void setColor(Color color) {
        progressCircle.setStroke(color);
    }

    public void setSize(double size) {
        progressCircle.setRadius(size / 2 - progressCircle.getStrokeWidth() / 2);
    }

    public void setAnimation(boolean animate) {
        if (animate) {
            progressCircle.getStyleClass().add("animated");
        } else {
            progressCircle.getStyleClass().remove("animated");
        }
    }

    public void setOtherProperty(Object value) {
        // 设置其他属性
    }
}

import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;

public class Main extends Application {
    @Override
    public void start(Stage primaryStage) throws Exception {
        FXMLLoader loader = new FXMLLoader(getClass().getResource("sample.fxml"));
        Parent root = loader.load();
        Scene scene = new Scene(root, 400, 400);
        primaryStage.setScene(scene);
        primaryStage.show();

        CustomProgressIndicator progressIndicator = new CustomProgressIndicator();
        progressIndicator.setProgress(0.5);
        progressIndicator.setColor(Color.RED);
        progressIndicator.setSize(100);
        progressIndicator.setAnimation(true);

        StackPane stackPane = (StackPane) root;
        stackPane.getChildren().add(progressIndicator);
    }

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