ceph/src/boost/libs/geometry/include/boost/geometry/strategies/distance.hpp

   1 // Boost.Geometry (aka GGL, Generic Geometry Library)
   2
   3 // Copyright (c) 2007-2014 Barend Gehrels, Amsterdam, the Netherlands.
   4 // Copyright (c) 2008-2014 Bruno Lalande, Paris, France.
   5 // Copyright (c) 2009-2014 Mateusz Loskot, London, UK.
   6
   7 // This file was modified by Oracle on 2014.
   8 // Modifications copyright (c) 2014, Oracle and/or its affiliates.
   9
  10 // Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle
  11
  12 // Parts of Boost.Geometry are redesigned from Geodan's Geographic Library
  13 // (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands.
  14
  15 // Use, modification and distribution is subject to the Boost Software License,
  16 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
  17 // http://www.boost.org/LICENSE_1_0.txt)
  18
  19 #ifndef BOOST_GEOMETRY_STRATEGIES_DISTANCE_HPP
  20 #define BOOST_GEOMETRY_STRATEGIES_DISTANCE_HPP
  21
  22
  23 #include <boost/mpl/assert.hpp>
  24
  25 #include <boost/geometry/core/cs.hpp>
  26 #include <boost/geometry/strategies/tags.hpp>
  27
  28
  29 namespace boost { namespace geometry
  30 {
  31
  32
  33 namespace strategy { namespace distance { namespace services
  34 {
  35
  36
  37 template <typename Strategy> struct tag {};
  38
  39 template <typename Strategy, typename P1, typename P2>
  40 struct return_type
  41 {
  42     BOOST_MPL_ASSERT_MSG
  43         (
  44             false, NOT_IMPLEMENTED_FOR_THIS_STRATEGY, (types<Strategy, P1, P2>)
  45         );
  46 };
  47
  48
  49 template <typename Strategy> struct comparable_type
  50 {
  51     BOOST_MPL_ASSERT_MSG
  52         (
  53             false, NOT_IMPLEMENTED_FOR_THIS_STRATEGY, (types<Strategy>)
  54         );
  55 };
  56
  57 template <typename Strategy> struct get_comparable
  58 {
  59     BOOST_MPL_ASSERT_MSG
  60         (
  61             false, NOT_IMPLEMENTED_FOR_THIS_STRATEGY, (types<Strategy>)
  62         );
  63 };
  64
  65 template <typename Strategy, typename P1, typename P2>
  66 struct result_from_distance {};
  67
  68
  69
  70
  71 // Default strategy
  72
  73
  74 /*!
  75     \brief Traits class binding a default strategy for distance
  76         to one (or possibly two) coordinate system(s)
  77     \ingroup distance
  78     \tparam GeometryTag1 tag (point/segment/box) for which this strategy is the default
  79     \tparam GeometryTag2 tag (point/segment/box) for which this strategy is the default
  80     \tparam Point1 first point-type
  81     \tparam Point2 second point-type
  82     \tparam CsTag1 tag of coordinate system of first point type
  83     \tparam CsTag2 tag of coordinate system of second point type
  84 */
  85 template
  86 <
  87     typename GeometryTag1,
  88     typename GeometryTag2,
  89     typename Point1,
  90     typename Point2 = Point1,
  91     typename CsTag1 = typename cs_tag<Point1>::type,
  92     typename CsTag2 = typename cs_tag<Point2>::type,
  93     typename UnderlyingStrategy = void
  94 >
  95 struct default_strategy
  96 {
  97     BOOST_MPL_ASSERT_MSG
  98         (
  99             false, NOT_IMPLEMENTED_FOR_THIS_POINT_TYPE_COMBINATION
 100             , (types<Point1, Point2, CsTag1, CsTag2>)
 101         );
 102 };
 103
 104
 105 }}} // namespace strategy::distance::services
 106
 107
 108 }} // namespace boost::geometry
 109
 110 #endif // BOOST_GEOMETRY_STRATEGIES_DISTANCE_HPP