text: // Boost.Geometry (aka GGL, Generic Geometry Library)
  
  // Copyright (c) 2016-2018 Oracle and/or its affiliates.
  // Contributed and/or modified by Vissarion Fisikopoulos, on behalf of Oracle
  // Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
  
  // 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)
  
  #ifndef BOOST_GEOMETRY_STRATEGIES_ENVELOPE_HPP
  #define BOOST_GEOMETRY_STRATEGIES_ENVELOPE_HPP
  
  #include <boost/mpl/assert.hpp>
  
  namespace boost { namespace geometry
  {
  
  
  namespace strategy { namespace envelope { namespace services
  {
  
  /*!
  \brief Traits class binding a default envelope strategy to a coordinate system
  \ingroup util
  \tparam Tag tag of geometry
  \tparam CSTag tag of coordinate system
  \tparam CalculationType \tparam_calculation
  */
  template <typename Tag, typename CSTag, typename CalculationType = void>
  struct default_strategy
  {
      BOOST_MPL_ASSERT_MSG
          (
              false, NOT_IMPLEMENTED_FOR_THIS_TYPE
              , (types<Tag, CSTag>)
          );
  };
  
  }}} // namespace strategy::envelope::services
  
  
  }} // namespace boost::geometry
  
  #endif // BOOST_GEOMETRY_STRATEGIES_ENVELOPE_HPP
  
  