小编Vai*_*ain的帖子

我正在创建一个简单的javafx应用程序.我只是想在两个同心圆之间提供的区域内剪切图像,这会改变鼠标移动时的中心坐标,cliped对象最初出现在定义的位置,但它不响应鼠标移动.请告诉我我做错了什么.

我的代码是:

public DoubleProperty xCordinate;
public DoubleProperty yCordinate;

@Override
public void start(Stage primaryStage) {

    Group root = new Group();
    Image image = new Image(MyClass.class
            .getResource("Water lilies.jpg").toExternalForm());
    Scene scene = new Scene(root, image.getWidth(), image.getHeight(),
            Color.WHITE);
    ImageView view = new ImageView();
    view.setImage(image);
    xCordinate = new SimpleDoubleProperty(100.0f);
    yCordinate = new SimpleDoubleProperty(100.0f);
    scene.setOnMouseMoved(new EventHandler<MouseEvent>() {
        @Override
        public void handle(MouseEvent event) {
            xCordinate.set(event.getX());
            yCordinate.set(event.getY());
            System.out.println("xCordinate " + xCordinate + " yCordinate "
                    + yCordinate);
        }

    });

    Circle c1 = new Circle();
    c1.centerXProperty().bind(xCordinate);
    c1.centerYProperty().bind(yCordinate);
    c1.setRadius(50.0f);
    Circle …