How to use

getCenterY

method

in

javafx.scene.shape.Circle

private Point2D makeControlPoint(final double endX, final double endY, final Circle circle, final int numSegments, int direction) {
  final double controlPointDistance = (4.0 / 3.0) * Math.tan(Math.PI / (2 * numSegments)) * circle.getRadius();
  final Point2D center = new Point2D(circle.getCenterX(), circle.getCenterY());
  final Point2D end = new Point2D(endX, endY);
  Point2D perp = rotate(center, end, direction * Math.PI / 2.);
  Point2D diff = perp.subtract(end);
  diff = diff.normalize();
  diff = scale(diff, controlPointDistance);
  return end.add(diff);
}

@Subscribe
public void handleShipLeavesCity(ShipLeavingPort event) {
  ICity city = event.getCity();
  final IShipOwner owner = event.getShip().getOwner();
  if (owner instanceof IHumanPlayer && owner.equals(viewState.getPlayer())) {
    List<INavigableVessel> ships = ((IHumanPlayer)owner).findShips(city);
    if (ships.isEmpty()) {
      double cityX = (int) Math.rint(city.getCoordinates().getX()) * scale.doubleValue();
      double cityY = (int) Math.rint(city.getCoordinates().getY()) * scale.doubleValue();
      for (Iterator<Node> iterator = shipCanvas.getChildren().iterator(); iterator.hasNext(); ) {
        Node node = iterator.next();
        if (node instanceof Circle) {
          Circle c = (Circle) node;
          if (c.getCenterX() == cityX && c.getCenterY() == cityY) {
            Platform.runLater(iterator::remove);
            break;
          }
        }
      }
    }
  }
}

@Subscribe
public void handleShipLeavesCity(ShipLeavingPort event) {
  ICity city = event.getCity();
  final IShipOwner owner = event.getShip().getOwner();
  if (owner instanceof IHumanPlayer && owner.equals(viewState.getPlayer())) {
    List<INavigableVessel> ships = ((IHumanPlayer)owner).findShips(city);
    if (ships.isEmpty()) {
      double cityX = (int) Math.rint(city.getCoordinates().getX()) * scale;
      double cityY = (int) Math.rint(city.getCoordinates().getY()) * scale;
      double viewportOffset = imgView.getViewport().getMinX() * scale;
      for (Iterator<Node> iterator = mapPane.getChildren().iterator(); iterator.hasNext(); ) {
        Node node = iterator.next();
        if (node instanceof Circle) {
          Circle c = (Circle) node;
          if (c.getCenterX() + viewportOffset == cityX && c.getCenterY() == cityY) {
            Platform.runLater(iterator::remove);
            break;
          }
        }
      }
    }
  }
}
@Subscribe

private Point2D makeControlPoint(final double endX, final double endY, final Circle circle, final int numSegments, int direction) {
  final double controlPointDistance = (4.0 / 3.0) * Math.tan(Math.PI / (2 * numSegments)) * circle.getRadius();
  final Point2D center = new Point2D(circle.getCenterX(), circle.getCenterY());
  final Point2D end = new Point2D(endX, endY);
  Point2D perp = rotate(center, end, direction * Math.PI / 2.);
  Point2D diff = perp.subtract(end);
  diff = diff.normalize();
  diff = scale(diff, controlPointDistance);
  return end.add(diff);
}