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1 // Boost.Geometry (aka GGL, Generic Geometry Library)
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2
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3 // Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands.
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4 // Copyright (c) 2008-2012 Bruno Lalande, Paris, France.
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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 #ifndef BOOST_GEOMETRY_GEOMETRIES_POLYGON_HPP
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15 #define BOOST_GEOMETRY_GEOMETRIES_POLYGON_HPP
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16
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17 #include <memory>
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18 #include <vector>
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19
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20 #include <boost/concept/assert.hpp>
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21
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22 #include <boost/geometry/core/exterior_ring.hpp>
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23 #include <boost/geometry/core/interior_rings.hpp>
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24 #include <boost/geometry/core/point_type.hpp>
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25 #include <boost/geometry/core/ring_type.hpp>
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26 #include <boost/geometry/geometries/concepts/point_concept.hpp>
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27 #include <boost/geometry/geometries/ring.hpp>
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28
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29 namespace boost { namespace geometry
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30 {
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31
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32 namespace model
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33 {
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34
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35 /*!
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36 \brief The polygon contains an outer ring and zero or more inner rings.
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37 \ingroup geometries
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38 \tparam Point point type
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39 \tparam ClockWise true for clockwise direction,
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40 false for CounterClockWise direction
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41 \tparam Closed true for closed polygons (last point == first point),
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42 false open points
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43 \tparam PointList container type for points,
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44 for example std::vector, std::list, std::deque
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45 \tparam RingList container type for inner rings,
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46 for example std::vector, std::list, std::deque
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47 \tparam PointAlloc container-allocator-type, for the points
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48 \tparam RingAlloc container-allocator-type, for the rings
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49 \note The container collecting the points in the rings can be different
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50 from the container collecting the inner rings. They all default to vector.
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51
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52 \qbk{before.synopsis,
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53 [heading Model of]
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54 [link geometry.reference.concepts.concept_polygon Polygon Concept]
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55 }
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56
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57
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58 */
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59 template
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60 <
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61 typename Point,
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62 bool ClockWise = true,
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63 bool Closed = true,
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64 template<typename, typename> class PointList = std::vector,
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65 template<typename, typename> class RingList = std::vector,
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66 template<typename> class PointAlloc = std::allocator,
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67 template<typename> class RingAlloc = std::allocator
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68 >
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69 class polygon
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70 {
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71 BOOST_CONCEPT_ASSERT( (concept::Point<Point>) );
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72
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73 public:
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74
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75 // Member types
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76 typedef Point point_type;
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77 typedef ring<Point, ClockWise, Closed, PointList, PointAlloc> ring_type;
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78 typedef RingList<ring_type , RingAlloc<ring_type > > inner_container_type;
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79
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80 inline ring_type const& outer() const { return m_outer; }
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81 inline inner_container_type const& inners() const { return m_inners; }
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82
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83 inline ring_type& outer() { return m_outer; }
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84 inline inner_container_type & inners() { return m_inners; }
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85
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86 /// Utility method, clears outer and inner rings
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87 inline void clear()
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88 {
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89 m_outer.clear();
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90 m_inners.clear();
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91 }
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92
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93 private:
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94
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95 ring_type m_outer;
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96 inner_container_type m_inners;
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97 };
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98
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99
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100 } // namespace model
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101
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102
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103 #ifndef DOXYGEN_NO_TRAITS_SPECIALIZATIONS
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104 namespace traits
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105 {
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106
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107 template
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108 <
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109 typename Point,
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110 bool ClockWise, bool Closed,
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111 template<typename, typename> class PointList,
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112 template<typename, typename> class RingList,
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113 template<typename> class PointAlloc,
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114 template<typename> class RingAlloc
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115 >
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116 struct tag
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117 <
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118 model::polygon
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119 <
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120 Point, ClockWise, Closed,
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121 PointList, RingList, PointAlloc, RingAlloc
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122 >
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123 >
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124 {
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125 typedef polygon_tag type;
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126 };
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127
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128 template
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129 <
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130 typename Point,
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131 bool ClockWise, bool Closed,
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132 template<typename, typename> class PointList,
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133 template<typename, typename> class RingList,
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134 template<typename> class PointAlloc,
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135 template<typename> class RingAlloc
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136 >
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137 struct ring_const_type
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138 <
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139 model::polygon
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140 <
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141 Point, ClockWise, Closed,
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142 PointList, RingList, PointAlloc, RingAlloc
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143 >
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144 >
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145 {
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146 typedef typename model::polygon
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147 <
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148 Point, ClockWise, Closed,
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149 PointList, RingList,
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150 PointAlloc, RingAlloc
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151 >::ring_type const& type;
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152 };
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153
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154
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155 template
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156 <
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157 typename Point,
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158 bool ClockWise, bool Closed,
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159 template<typename, typename> class PointList,
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160 template<typename, typename> class RingList,
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161 template<typename> class PointAlloc,
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162 template<typename> class RingAlloc
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163 >
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164 struct ring_mutable_type
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165 <
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166 model::polygon
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167 <
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168 Point, ClockWise, Closed,
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169 PointList, RingList, PointAlloc, RingAlloc
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170 >
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171 >
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172 {
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173 typedef typename model::polygon
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174 <
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175 Point, ClockWise, Closed,
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176 PointList, RingList,
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177 PointAlloc, RingAlloc
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178 >::ring_type& type;
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179 };
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180
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181 template
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182 <
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183 typename Point,
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184 bool ClockWise, bool Closed,
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185 template<typename, typename> class PointList,
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186 template<typename, typename> class RingList,
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187 template<typename> class PointAlloc,
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188 template<typename> class RingAlloc
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189 >
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190 struct interior_const_type
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191 <
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192 model::polygon
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193 <
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194 Point, ClockWise, Closed,
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195 PointList, RingList,
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196 PointAlloc, RingAlloc
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197 >
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198 >
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199 {
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200 typedef typename model::polygon
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201 <
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202 Point, ClockWise, Closed,
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203 PointList, RingList,
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204 PointAlloc, RingAlloc
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205 >::inner_container_type const& type;
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206 };
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207
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208
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209 template
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210 <
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211 typename Point,
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212 bool ClockWise, bool Closed,
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213 template<typename, typename> class PointList,
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214 template<typename, typename> class RingList,
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215 template<typename> class PointAlloc,
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216 template<typename> class RingAlloc
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217 >
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218 struct interior_mutable_type
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219 <
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220 model::polygon
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221 <
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222 Point, ClockWise, Closed,
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223 PointList, RingList,
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224 PointAlloc, RingAlloc
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225 >
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226 >
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227 {
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228 typedef typename model::polygon
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229 <
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230 Point, ClockWise, Closed,
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231 PointList, RingList,
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232 PointAlloc, RingAlloc
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233 >::inner_container_type& type;
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234 };
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235
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236
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237 template
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238 <
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239 typename Point,
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240 bool ClockWise, bool Closed,
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241 template<typename, typename> class PointList,
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242 template<typename, typename> class RingList,
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243 template<typename> class PointAlloc,
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244 template<typename> class RingAlloc
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245 >
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246 struct exterior_ring
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247 <
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248 model::polygon
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249 <
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250 Point, ClockWise, Closed,
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251 PointList, RingList, PointAlloc, RingAlloc
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252 >
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253 >
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254 {
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255 typedef model::polygon
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256 <
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257 Point, ClockWise, Closed,
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258 PointList, RingList,
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259 PointAlloc, RingAlloc
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260 > polygon_type;
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261
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262 static inline typename polygon_type::ring_type& get(polygon_type& p)
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263 {
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264 return p.outer();
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265 }
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266
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267 static inline typename polygon_type::ring_type const& get(
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268 polygon_type const& p)
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269 {
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270 return p.outer();
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271 }
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272 };
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273
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274 template
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275 <
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276 typename Point,
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277 bool ClockWise, bool Closed,
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278 template<typename, typename> class PointList,
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279 template<typename, typename> class RingList,
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280 template<typename> class PointAlloc,
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281 template<typename> class RingAlloc
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282 >
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283 struct interior_rings
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284 <
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285 model::polygon
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286 <
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287 Point, ClockWise, Closed,
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288 PointList, RingList,
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289 PointAlloc, RingAlloc
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290 >
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291 >
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292 {
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293 typedef model::polygon
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294 <
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295 Point, ClockWise, Closed, PointList, RingList,
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296 PointAlloc, RingAlloc
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297 > polygon_type;
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298
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299 static inline typename polygon_type::inner_container_type& get(
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300 polygon_type& p)
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301 {
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302 return p.inners();
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303 }
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304
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305 static inline typename polygon_type::inner_container_type const& get(
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306 polygon_type const& p)
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307 {
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308 return p.inners();
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309 }
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310 };
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311
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312 } // namespace traits
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313 #endif // DOXYGEN_NO_TRAITS_SPECIALIZATIONS
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314
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315
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316
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317 }} // namespace boost::geometry
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318
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319 #endif // BOOST_GEOMETRY_GEOMETRIES_POLYGON_HPP
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