public Point getOrigin ( ) { if ( this . origin == null ) { double x = MercatorProjection . tileToPixel ( this . tileX , this . tileSize ) ; double y = MercatorProjection . tileToPixel ( this . tileY , this . tileSize ) ; this . origin = new Point ( x , y ) ; } return this . origin ; }
Returns the top - left point of this tile in absolute coordinates .