[/============================================================================
  Boost.Geometry (aka GGL, Generic Geometry Library)

  Copyright (c) 2011-2012 Barend Gehrels, Amsterdam, the Netherlands.

  Use, modification and distribution is subject to the Boost Software License,
  Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
  http://www.boost.org/LICENSE_1_0.txt)
=============================================================================/]

[note Check the [link geometry.reference.concepts.concept_polygon Polygon Concept]
    for the rules that polygon input for this algorithm should fulfill]