I have a javafx program that generates a canvas where a user can draw an Ellipse. I am using the press down, drag and release technique for the mouse.
However I want to be able to scale the shape in size from the top left corner of the shape (much like a Rectangle is scaled) rather than its center. Is there any suggestions to how I could achieve this?

```
@Override
public void start(Stage ellipseStage) {

    //Create ellipse
    ellipsePane = new Pane();
    ellipsePane.setMinSize(600,600);

    ellipsePane.setOnMousePressed(e -> {
        if (e.getButton() == MouseButton.PRIMARY) {
            ellipse = new Ellipse();
            ellipse.setCenterX(e.getX());
            ellipse.setCenterY(e.getY());
            ellipse.setStroke(Color.ORANGE);
            ellipse.setFill(Color.BLACK);
            ellipsePane.getChildren().add(ellipse);
        }
        //if we double click
        if (e.getClickCount() == 2) {
            ellipse = null;
        }
    });

    //When the mouse is dragged the ellipse expands
    ellipsePane.setOnMouseDragged(e -> {
        if (ellipse != null) {
            ellipse.setRadiusX(e.getX() - ellipse.getCenterX());
            ellipse.setRadiusY(e.getY() - ellipse.getCenterY());
        }
    });

    Scene scene = new Scene(ellipsePane);
    ellipseStage.setScene(scene);
    ellipseStage.show();
}

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

```