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| <div class="titlepage"><div><div><h5 class="title"> |
| <a name="geometry.reference.adapted.register.boost_geometry_register_multi_polygon"></a><a class="link" href="boost_geometry_register_multi_polygon.html" title="BOOST_GEOMETRY_REGISTER_MULTI_POLYGON">BOOST_GEOMETRY_REGISTER_MULTI_POLYGON</a> |
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| <p> |
| <a class="indexterm" name="idp104922928"></a> |
| Macro to register a multi_polygon. |
| </p> |
| <h6> |
| <a name="geometry.reference.adapted.register.boost_geometry_register_multi_polygon.h0"></a> |
| <span class="phrase"><a name="geometry.reference.adapted.register.boost_geometry_register_multi_polygon.description"></a></span><a class="link" href="boost_geometry_register_multi_polygon.html#geometry.reference.adapted.register.boost_geometry_register_multi_polygon.description">Description</a> |
| </h6> |
| <p> |
| The macro BOOST_GEOMETRY_REGISTER_MULTI_POLYGON registers a multi_polygon |
| such that it is recognized by Boost.Geometry and that Boost.Geometry |
| functionality can used with the specified type. The multi_polygon may |
| contain template parameters, which must be specified then. |
| </p> |
| <h6> |
| <a name="geometry.reference.adapted.register.boost_geometry_register_multi_polygon.h1"></a> |
| <span class="phrase"><a name="geometry.reference.adapted.register.boost_geometry_register_multi_polygon.synopsis"></a></span><a class="link" href="boost_geometry_register_multi_polygon.html#geometry.reference.adapted.register.boost_geometry_register_multi_polygon.synopsis">Synopsis</a> |
| </h6> |
| <p> |
| </p> |
| <pre class="programlisting"><span class="preprocessor">#define</span> <span class="identifier">BOOST_GEOMETRY_REGISTER_MULTI_POLYGON</span><span class="special">(</span><span class="identifier">MultiPolygon</span><span class="special">)</span></pre> |
| <p> |
| </p> |
| <h6> |
| <a name="geometry.reference.adapted.register.boost_geometry_register_multi_polygon.h2"></a> |
| <span class="phrase"><a name="geometry.reference.adapted.register.boost_geometry_register_multi_polygon.parameters"></a></span><a class="link" href="boost_geometry_register_multi_polygon.html#geometry.reference.adapted.register.boost_geometry_register_multi_polygon.parameters">Parameters</a> |
| </h6> |
| <div class="informaltable"><table class="table"> |
| <colgroup> |
| <col> |
| <col> |
| </colgroup> |
| <thead><tr> |
| <th> |
| <p> |
| Name |
| </p> |
| </th> |
| <th> |
| <p> |
| Description |
| </p> |
| </th> |
| </tr></thead> |
| <tbody><tr> |
| <td> |
| <p> |
| MultiPolygon |
| </p> |
| </td> |
| <td> |
| <p> |
| multi_polygon type to be registered |
| </p> |
| </td> |
| </tr></tbody> |
| </table></div> |
| <h6> |
| <a name="geometry.reference.adapted.register.boost_geometry_register_multi_polygon.h3"></a> |
| <span class="phrase"><a name="geometry.reference.adapted.register.boost_geometry_register_multi_polygon.header"></a></span><a class="link" href="boost_geometry_register_multi_polygon.html#geometry.reference.adapted.register.boost_geometry_register_multi_polygon.header">Header</a> |
| </h6> |
| <p> |
| <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">geometry</span><span class="special">/</span><span class="identifier">geometries</span><span class="special">/</span><span class="keyword">register</span><span class="special">/</span><span class="identifier">multi_polygon</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span></code> |
| </p> |
| <h6> |
| <a name="geometry.reference.adapted.register.boost_geometry_register_multi_polygon.h4"></a> |
| <span class="phrase"><a name="geometry.reference.adapted.register.boost_geometry_register_multi_polygon.example"></a></span><a class="link" href="boost_geometry_register_multi_polygon.html#geometry.reference.adapted.register.boost_geometry_register_multi_polygon.example">Example</a> |
| </h6> |
| <p> |
| Show the use of the macro BOOST_GEOMETRY_REGISTER_MULTI_POLYGON |
| </p> |
| <p> |
| </p> |
| <pre class="programlisting"><span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">iostream</span><span class="special">></span> |
| |
| <span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">geometry</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> |
| <span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">geometry</span><span class="special">/</span><span class="identifier">geometries</span><span class="special">/</span><span class="identifier">polygon</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> |
| <span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">geometry</span><span class="special">/</span><span class="identifier">geometries</span><span class="special">/</span><span class="identifier">adapted</span><span class="special">/</span><span class="identifier">boost_tuple</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> |
| <span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">geometry</span><span class="special">/</span><span class="identifier">geometries</span><span class="special">/</span><span class="keyword">register</span><span class="special">/</span><span class="identifier">multi_polygon</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> |
| |
| <span class="keyword">typedef</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">geometry</span><span class="special">::</span><span class="identifier">model</span><span class="special">::</span><span class="identifier">polygon</span> |
| <span class="special"><</span> |
| <span class="identifier">boost</span><span class="special">::</span><span class="identifier">tuple</span><span class="special"><</span><span class="keyword">float</span><span class="special">,</span> <span class="keyword">float</span><span class="special">></span> |
| <span class="special">></span> <span class="identifier">polygon_type</span><span class="special">;</span> |
| |
| <span class="identifier">BOOST_GEOMETRY_REGISTER_BOOST_TUPLE_CS</span><span class="special">(</span><span class="identifier">cs</span><span class="special">::</span><span class="identifier">cartesian</span><span class="special">)</span> |
| <span class="identifier">BOOST_GEOMETRY_REGISTER_MULTI_POLYGON</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">vector</span><span class="special"><</span><span class="identifier">polygon_type</span><span class="special">>)</span> |
| |
| <span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> |
| <span class="special">{</span> |
| <span class="comment">// Normal usage of std::</span> |
| <span class="identifier">std</span><span class="special">::</span><span class="identifier">vector</span><span class="special"><</span><span class="identifier">polygon_type</span><span class="special">></span> <span class="identifier">polygons</span><span class="special">(</span><span class="number">2</span><span class="special">);</span> |
| <span class="identifier">boost</span><span class="special">::</span><span class="identifier">geometry</span><span class="special">::</span><span class="identifier">read_wkt</span><span class="special">(</span><span class="string">"POLYGON((0 0,0 1,1 1,1 0,0 0))"</span><span class="special">,</span> <span class="identifier">polygons</span><span class="special">[</span><span class="number">0</span><span class="special">]);</span> |
| <span class="identifier">boost</span><span class="special">::</span><span class="identifier">geometry</span><span class="special">::</span><span class="identifier">read_wkt</span><span class="special">(</span><span class="string">"POLYGON((3 0,3 1,4 1,4 0,3 0))"</span><span class="special">,</span> <span class="identifier">polygons</span><span class="special">[</span><span class="number">1</span><span class="special">]);</span> |
| |
| <span class="comment">// Usage of Boost.Geometry</span> |
| <span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"AREA: "</span> <span class="special"><<</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">geometry</span><span class="special">::</span><span class="identifier">area</span><span class="special">(</span><span class="identifier">polygons</span><span class="special">)</span> <span class="special"><<</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">endl</span><span class="special">;</span> |
| |
| <span class="keyword">return</span> <span class="number">0</span><span class="special">;</span> |
| <span class="special">}</span> |
| </pre> |
| <p> |
| </p> |
| <p> |
| Output: |
| </p> |
| <pre class="programlisting">AREA: 2 |
| </pre> |
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