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   4 <title>Boost.Polygon's point_data</title>
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  26 <div class="titlepage"><div><div><h5 class="title">
  27 <a name="geometry.reference.adapted.boost_polygon.point_data"></a><a class="link" href="point_data.html" title="Boost.Polygon's point_data">Boost.Polygon's
  28           point_data</a>
  29 </h5></div></div></div>
  30 <p>
  31             The Boost.Polygon point type (boost::polygon::point_data) is adapted
  32             to the Boost.Geometry Point Concept.
  33           </p>
  34 <h6>
  35 <a name="geometry.reference.adapted.boost_polygon.point_data.h0"></a>
  36             <span class="phrase"><a name="geometry.reference.adapted.boost_polygon.point_data.description"></a></span><a class="link" href="point_data.html#geometry.reference.adapted.boost_polygon.point_data.description">Description</a>
  37           </h6>
  38 <p>
  39             Boost.Polygon's points (as well as polygons) can be used by Boost.Geometry.
  40             The two libraries can therefore be used together. Using a boost::polygon::point_data&lt;...&gt;,
  41             algorithms from both Boost.Polygon and Boost.Geometry can be called.
  42           </p>
  43 <h6>
  44 <a name="geometry.reference.adapted.boost_polygon.point_data.h1"></a>
  45             <span class="phrase"><a name="geometry.reference.adapted.boost_polygon.point_data.model_of"></a></span><a class="link" href="point_data.html#geometry.reference.adapted.boost_polygon.point_data.model_of">Model
  46             of</a>
  47           </h6>
  48 <p>
  49             <a class="link" href="../../concepts/concept_point.html" title="Point Concept">Point Concept</a>
  50           </p>
  51 <h6>
  52 <a name="geometry.reference.adapted.boost_polygon.point_data.h2"></a>
  53             <span class="phrase"><a name="geometry.reference.adapted.boost_polygon.point_data.header"></a></span><a class="link" href="point_data.html#geometry.reference.adapted.boost_polygon.point_data.header">Header</a>
  54           </h6>
  55 <p>
  56             <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</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_polygon</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
  57           </p>
  58 <p>
  59             The standard header <code class="computeroutput"><span class="identifier">boost</span><span class="special">/</span><span class="identifier">geometry</span><span class="special">.</span><span class="identifier">hpp</span></code>
  60             does not include this header.
  61           </p>
  62 <h6>
  63 <a name="geometry.reference.adapted.boost_polygon.point_data.h3"></a>
  64             <span class="phrase"><a name="geometry.reference.adapted.boost_polygon.point_data.example"></a></span><a class="link" href="point_data.html#geometry.reference.adapted.boost_polygon.point_data.example">Example</a>
  65           </h6>
  66 <p>
  67             Shows how to use Boost.Polygon point_data within Boost.Geometry
  68           </p>
  69 <p>
  70 </p>
  71 <pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">iostream</span><span class="special">&gt;</span>
  72 <span class="preprocessor">#include</span> <span class="special">&lt;</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">&gt;</span>
  73 <span class="preprocessor">#include</span> <span class="special">&lt;</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_polygon</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
  74
  75 <span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span>
  76 <span class="special">{</span>
  77     <span class="identifier">boost</span><span class="special">::</span><span class="identifier">polygon</span><span class="special">::</span><span class="identifier">point_data</span><span class="special">&lt;</span><span class="keyword">int</span><span class="special">&gt;</span> <span class="identifier">a</span><span class="special">(</span><span class="number">1</span><span class="special">,</span> <span class="number">2</span><span class="special">),</span> <span class="identifier">b</span><span class="special">(</span><span class="number">3</span><span class="special">,</span> <span class="number">4</span><span class="special">);</span>
  78     <span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special">&lt;&lt;</span> <span class="string">"Distance (using Boost.Geometry): "</span>
  79         <span class="special">&lt;&lt;</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">geometry</span><span class="special">::</span><span class="identifier">distance</span><span class="special">(</span><span class="identifier">a</span><span class="special">,</span> <span class="identifier">b</span><span class="special">)</span> <span class="special">&lt;&lt;</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">endl</span><span class="special">;</span>
  80     <span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special">&lt;&lt;</span> <span class="string">"Distance (using Boost.Polygon): "</span>
  81         <span class="special">&lt;&lt;</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">polygon</span><span class="special">::</span><span class="identifier">euclidean_distance</span><span class="special">(</span><span class="identifier">a</span><span class="special">,</span> <span class="identifier">b</span><span class="special">)</span> <span class="special">&lt;&lt;</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">endl</span><span class="special">;</span>
  82
  83     <span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
  84 <span class="special">}</span>
  85 </pre>
  86 <p>
  87           </p>
  88 <p>
  89             Output:
  90           </p>
  91 <pre class="programlisting">Distance (using Boost.Geometry): 2.82843
  92 Distance (using Boost.Polygon): 2.82843
  93 </pre>
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