code: @Pure
  	@Override
  	public boolean contains(Point2D<?, ?> point, double delta) {
  		return this.position.getDistance(point) <= delta;
  	}
docs: Replies if the specified point (<var>x</var>,<var>y</var>)
  was inside the figure of this MapElement.
  
  @param point is a geo-referenced coordinate
  @param delta is the geo-referenced distance that corresponds to a approximation
  distance in the screen coordinate system
  @return <code>true</code> if the specified point has a distance nearest than delta
  to this element, otherwise <code>false</code>