libs/geometry/doc/html/geometry/reference/adapted/boost_array.html

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  25 <div class="section">
  26 <div class="titlepage"><div><div><h4 class="title">
  27 <a name="geometry.reference.adapted.boost_array"></a><a class="link" href="boost_array.html" title="Boost.Array">Boost.Array</a>
  28 </h4></div></div></div>
  29 <p>
  30           Boost.Array arrays are adapted to the Boost.Geometry point concept
  31         </p>
  32 <h6>
  33 <a name="geometry.reference.adapted.boost_array.h0"></a>
  34           <span><a name="geometry.reference.adapted.boost_array.description"></a></span><a class="link" href="boost_array.html#geometry.reference.adapted.boost_array.description">Description</a>
  35         </h6>
  36 <p>
  37           A boost::array is (optionally) adapted to the Boost.Geometry point concept.
  38           It can therefore be used in all Boost.Geometry algorithms.
  39         </p>
  40 <p>
  41           A boost::array can be the point type used by the models linestring, polygon,
  42           segment, box, and ring
  43         </p>
  44 <h6>
  45 <a name="geometry.reference.adapted.boost_array.h1"></a>
  46           <span><a name="geometry.reference.adapted.boost_array.model_of"></a></span><a class="link" href="boost_array.html#geometry.reference.adapted.boost_array.model_of">Model
  47           of</a>
  48         </h6>
  49 <p>
  50           <a class="link" href="../concepts/concept_point.html" title="Point Concept">Point Concept</a>
  51         </p>
  52 <h6>
  53 <a name="geometry.reference.adapted.boost_array.h2"></a>
  54           <span><a name="geometry.reference.adapted.boost_array.header"></a></span><a class="link" href="boost_array.html#geometry.reference.adapted.boost_array.header">Header</a>
  55         </h6>
  56 <p>
  57           <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_array</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
  58         </p>
  59 <p>
  60           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>
  61           does not include this header.
  62         </p>
  63 <h6>
  64 <a name="geometry.reference.adapted.boost_array.h3"></a>
  65           <span><a name="geometry.reference.adapted.boost_array.example"></a></span><a class="link" href="boost_array.html#geometry.reference.adapted.boost_array.example">Example</a>
  66         </h6>
  67 <p>
  68           Shows how to use a Boost.Array using Boost.Geometry's distance, set and
  69           assign_values algorithms
  70         </p>
  71 <p>
  72 </p>
  73 <pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">iostream</span><span class="special">&gt;</span>
  74
  75 <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>
  76 <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">linestring</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
  77 <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_array</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
  78
  79 <span class="identifier">BOOST_GEOMETRY_REGISTER_BOOST_ARRAY_CS</span><span class="special">(</span><span class="identifier">cs</span><span class="special">::</span><span class="identifier">cartesian</span><span class="special">)</span>
  80
  81 <span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span>
  82 <span class="special">{</span>
  83     <span class="identifier">boost</span><span class="special">::</span><span class="identifier">array</span><span class="special">&lt;</span><span class="keyword">float</span><span class="special">,</span> <span class="number">2</span><span class="special">&gt;</span> <span class="identifier">a</span> <span class="special">=</span> <span class="special">{</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="special">};</span>
  84     <span class="identifier">boost</span><span class="special">::</span><span class="identifier">array</span><span class="special">&lt;</span><span class="keyword">double</span><span class="special">,</span> <span class="number">2</span><span class="special">&gt;</span> <span class="identifier">b</span> <span class="special">=</span> <span class="special">{</span> <span class="special">{</span><span class="number">2</span><span class="special">,</span> <span class="number">3</span><span class="special">}</span> <span class="special">};</span>
  85     <span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <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>
  86
  87     <span class="identifier">boost</span><span class="special">::</span><span class="identifier">geometry</span><span class="special">::</span><span class="identifier">set</span><span class="special">&lt;</span><span class="number">0</span><span class="special">&gt;(</span><span class="identifier">a</span><span class="special">,</span> <span class="number">1.1</span><span class="special">);</span>
  88     <span class="identifier">boost</span><span class="special">::</span><span class="identifier">geometry</span><span class="special">::</span><span class="identifier">set</span><span class="special">&lt;</span><span class="number">1</span><span class="special">&gt;(</span><span class="identifier">a</span><span class="special">,</span> <span class="number">2.2</span><span class="special">);</span>
  89     <span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <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>
  90
  91     <span class="identifier">boost</span><span class="special">::</span><span class="identifier">geometry</span><span class="special">::</span><span class="identifier">assign_values</span><span class="special">(</span><span class="identifier">b</span><span class="special">,</span> <span class="number">2.2</span><span class="special">,</span> <span class="number">3.3</span><span class="special">);</span>
  92     <span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <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>
  93
  94     <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">linestring</span><span class="special">&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">array</span><span class="special">&lt;</span><span class="keyword">double</span><span class="special">,</span> <span class="number">2</span><span class="special">&gt;</span> <span class="special">&gt;</span> <span class="identifier">line</span><span class="special">;</span>
  95     <span class="identifier">line</span><span class="special">.</span><span class="identifier">push_back</span><span class="special">(</span><span class="identifier">b</span><span class="special">);</span>
  96
  97     <span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
  98 <span class="special">}</span>
  99 </pre>
 100 <p>
 101         </p>
 102 <p>
 103           Output:
 104         </p>
 105 <pre class="programlisting">1.41421
 106 1.20416
 107 1.55563
 108 </pre>
 109 </div>
 110 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
 111 <td align="left"></td>
 112 <td align="right"><div class="copyright-footer">Copyright &#169; 2009-2012 Barend
 113       Gehrels, Bruno Lalande, Mateusz Loskot<p>
 114         Distributed under the Boost Software License, Version 1.0. (See accompanying
 115         file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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