public PositionLayer(Image image){
  this(new ImageView(image),image.getWidth() / -2.0,image.getHeight() / -2.0);
}

public PositionLayer ( Image image ) { this ( new ImageView ( image ) , image . getWidth ( ) / - 2.0 , image . getHeight ( ) / - 2.0 ) ; }
create a positionlayer with an image that will be shown on the map at the position of this positionlayer . the center of the image will be used for the position of the positionlayer . once created , a positionlayer should be added to a layeredmap . the layeredmap is responsible for doing the required calculations .
