public ShapeTileBox bounding_box(){
  PlaPointInt lower_left=new PlaPointInt(Math.floor(v_x),Math.floor(v_y));
  PlaPointInt upper_right=new PlaPointInt(Math.ceil(v_x),Math.ceil(v_y));
  return new ShapeTileBox(lower_left,upper_right);
}

public ShapeTileBox bounding_box ( ) { PlaPointInt lower_left = new PlaPointInt ( Math . floor ( v_x ) , Math . floor ( v_y ) ) ; PlaPointInt upper_right = new PlaPointInt ( Math . ceil ( v_x ) , Math . ceil ( v_y ) ) ; return new ShapeTileBox ( lower_left , upper_right ) ; }
creates the smallest intbox containing this point .
