deps/boost_1_63_0/boost/geometry/strategies/centroid.hpp

   1 // Boost.Geometry (aka GGL, Generic Geometry Library)
   2
   3 // Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands.
   4 // Copyright (c) 2008-2012 Bruno Lalande, Paris, France.
   5 // Copyright (c) 2009-2012 Mateusz Loskot, London, UK.
   6
   7 // Parts of Boost.Geometry are redesigned from Geodan's Geographic Library
   8 // (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands.
   9
  10 // Use, modification and distribution is subject to the Boost Software License,
  11 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
  12 // http://www.boost.org/LICENSE_1_0.txt)
  13
  14 #ifndef BOOST_GEOMETRY_STRATEGIES_CENTROID_HPP
  15 #define BOOST_GEOMETRY_STRATEGIES_CENTROID_HPP
  16
  17
  18 #include <cstddef>
  19
  20 #include <boost/mpl/assert.hpp>
  21
  22 #include <boost/geometry/core/tags.hpp>
  23 #include <boost/geometry/strategies/tags.hpp>
  24
  25
  26 namespace boost { namespace geometry
  27 {
  28
  29
  30 namespace strategy { namespace centroid
  31 {
  32
  33 struct not_applicable_strategy
  34 {
  35 };
  36
  37
  38 namespace services
  39 {
  40
  41 /*!
  42     \brief Traits class binding a centroid calculation strategy to a coordinate system
  43     \ingroup centroid
  44     \tparam CsTag tag of coordinate system, for specialization
  45     \tparam GeometryTag tag of geometry, for specialization
  46     \tparam Dimension dimension of geometry, for specialization
  47     \tparam Point point-type
  48     \tparam Geometry
  49 */
  50 template
  51 <
  52     typename CsTag,
  53     typename GeometryTag,
  54     std::size_t Dimension,
  55     typename Point,
  56     typename Geometry
  57 >
  58 struct default_strategy
  59 {
  60     typedef not_applicable_strategy type;
  61 };
  62
  63
  64 } // namespace services
  65
  66
  67 }} // namespace strategy::centroid
  68
  69
  70 }} // namespace boost::geometry
  71
  72 #endif // BOOST_GEOMETRY_STRATEGIES_CENTROID_HPP