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1 // Boost.Geometry (aka GGL, Generic Geometry Library)
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2
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3 // Copyright (c) 2008-2012 Bruno Lalande, Paris, France.
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4 // Copyright (c) 2008-2012 Barend Gehrels, Amsterdam, the Netherlands.
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5 // Copyright (c) 2009-2012 Mateusz Loskot, London, UK.
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6
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7 // Parts of Boost.Geometry are redesigned from Geodan's Geographic Library
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8 // (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands.
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9
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10 // Use, modification and distribution is subject to the Boost Software License,
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11 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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12 // http://www.boost.org/LICENSE_1_0.txt)
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13
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14
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15 #ifndef BOOST_GEOMETRY_GEOMETRIES_CONCEPTS_CHECK_HPP
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16 #define BOOST_GEOMETRY_GEOMETRIES_CONCEPTS_CHECK_HPP
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17
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18
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19 #include <boost/concept_check.hpp>
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20 #include <boost/concept/requires.hpp>
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21
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22 #include <boost/type_traits/is_const.hpp>
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23
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24 #include <boost/geometry/core/tag.hpp>
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25
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26 #include <boost/geometry/geometries/concepts/box_concept.hpp>
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27 #include <boost/geometry/geometries/concepts/linestring_concept.hpp>
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28 #include <boost/geometry/geometries/concepts/point_concept.hpp>
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29 #include <boost/geometry/geometries/concepts/polygon_concept.hpp>
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30 #include <boost/geometry/geometries/concepts/ring_concept.hpp>
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31 #include <boost/geometry/geometries/concepts/segment_concept.hpp>
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32
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33 #include <boost/geometry/algorithms/not_implemented.hpp>
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34
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35 #include <boost/variant/variant_fwd.hpp>
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36
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37 namespace boost { namespace geometry
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38 {
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39
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40
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41 #ifndef DOXYGEN_NO_DETAIL
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42 namespace detail { namespace concept_check
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43 {
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44
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45 template <typename Concept>
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46 class check
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47 {
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48 BOOST_CONCEPT_ASSERT((Concept ));
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49 };
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50
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51 }} // namespace detail::concept_check
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52 #endif // DOXYGEN_NO_DETAIL
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53
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54
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55
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56 #ifndef DOXYGEN_NO_DISPATCH
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57 namespace dispatch
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58 {
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59
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60 template
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61 <
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62 typename Geometry,
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63 typename GeometryTag = typename geometry::tag<Geometry>::type,
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64 bool IsConst = boost::is_const<Geometry>::type::value
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65 >
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66 struct check : not_implemented<GeometryTag>
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67 {};
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68
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69
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70 template <typename Geometry>
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71 struct check<Geometry, point_tag, true>
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72 : detail::concept_check::check<concept::ConstPoint<Geometry> >
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73 {};
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74
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75
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76 template <typename Geometry>
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77 struct check<Geometry, point_tag, false>
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78 : detail::concept_check::check<concept::Point<Geometry> >
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79 {};
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80
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81
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82 template <typename Geometry>
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83 struct check<Geometry, linestring_tag, true>
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84 : detail::concept_check::check<concept::ConstLinestring<Geometry> >
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85 {};
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86
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87
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88 template <typename Geometry>
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89 struct check<Geometry, linestring_tag, false>
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90 : detail::concept_check::check<concept::Linestring<Geometry> >
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91 {};
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92
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93
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94 template <typename Geometry>
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95 struct check<Geometry, ring_tag, true>
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96 : detail::concept_check::check<concept::ConstRing<Geometry> >
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97 {};
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98
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99
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100 template <typename Geometry>
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101 struct check<Geometry, ring_tag, false>
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102 : detail::concept_check::check<concept::Ring<Geometry> >
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103 {};
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104
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105 template <typename Geometry>
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106 struct check<Geometry, polygon_tag, true>
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107 : detail::concept_check::check<concept::ConstPolygon<Geometry> >
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108 {};
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109
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110
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111 template <typename Geometry>
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112 struct check<Geometry, polygon_tag, false>
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113 : detail::concept_check::check<concept::Polygon<Geometry> >
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114 {};
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115
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116
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117 template <typename Geometry>
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118 struct check<Geometry, box_tag, true>
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119 : detail::concept_check::check<concept::ConstBox<Geometry> >
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120 {};
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121
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122
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123 template <typename Geometry>
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124 struct check<Geometry, box_tag, false>
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125 : detail::concept_check::check<concept::Box<Geometry> >
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126 {};
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127
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128
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129 template <typename Geometry>
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130 struct check<Geometry, segment_tag, true>
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131 : detail::concept_check::check<concept::ConstSegment<Geometry> >
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132 {};
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133
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134
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135 template <typename Geometry>
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136 struct check<Geometry, segment_tag, false>
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137 : detail::concept_check::check<concept::Segment<Geometry> >
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138 {};
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139
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140
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141 } // namespace dispatch
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142 #endif
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143
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144
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145
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146
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147 namespace concept
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148 {
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149
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150
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151 #ifndef DOXYGEN_NO_DETAIL
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152 namespace detail
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153 {
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154
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155
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156 template <typename Geometry>
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157 struct checker : dispatch::check<Geometry>
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158 {};
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159
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160 template <BOOST_VARIANT_ENUM_PARAMS(typename T)>
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161 struct checker<boost::variant<BOOST_VARIANT_ENUM_PARAMS(T)> >
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162 {};
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163
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164 template <BOOST_VARIANT_ENUM_PARAMS(typename T)>
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165 struct checker<boost::variant<BOOST_VARIANT_ENUM_PARAMS(T)> const>
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166 {};
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167
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168
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169 }
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170 #endif // DOXYGEN_NO_DETAIL
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171
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172
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173 /*!
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174 \brief Checks, in compile-time, the concept of any geometry
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175 \ingroup concepts
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176 */
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177 template <typename Geometry>
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178 inline void check()
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179 {
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180 detail::checker<Geometry> c;
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181 boost::ignore_unused_variable_warning(c);
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182 }
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183
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184
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185 /*!
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186 \brief Checks, in compile-time, the concept of two geometries, and if they
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187 have equal dimensions
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188 \ingroup concepts
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189 */
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190 template <typename Geometry1, typename Geometry2>
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191 inline void check_concepts_and_equal_dimensions()
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192 {
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193 check<Geometry1>();
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194 check<Geometry2>();
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195 assert_dimension_equal<Geometry1, Geometry2>();
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196 }
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197
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198
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199 } // namespace concept
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200
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201
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202 }} // namespace boost::geometry
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203
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204
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205 #endif // BOOST_GEOMETRY_GEOMETRIES_CONCEPTS_CHECK_HPP
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