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<title>BOOST_GEOMETRY_REGISTER_RING_TEMPLATED</title>
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<div class="titlepage"><div><div><h5 class="title">
<a name="geometry.reference.adapted.register.boost_geometry_register_ring_templated"></a><a class="link" href="boost_geometry_register_ring_templated.html" title="BOOST_GEOMETRY_REGISTER_RING_TEMPLATED">BOOST_GEOMETRY_REGISTER_RING_TEMPLATED</a>
</h5></div></div></div>
<p>
<a class="indexterm" name="id819769"></a>
Macro to register a templated ring.
</p>
<h6>
<a name="geometry.reference.adapted.register.boost_geometry_register_ring_templated.h0"></a>
<span><a name="geometry.reference.adapted.register.boost_geometry_register_ring_templated.description"></a></span><a class="link" href="boost_geometry_register_ring_templated.html#geometry.reference.adapted.register.boost_geometry_register_ring_templated.description">Description</a>
</h6>
<p>
The macro BOOST_GEOMETRY_REGISTER_RING_TEMPLATED registers a templated
ring such that it is recognized by Boost.Geometry and that Boost.Geometry
functionality can used with the specified type. The type must have one
template parameter, which should be a point type, and should not be specified.
Boost.Geometry takes care of inserting the template parameter. Hence
all types of this templated ring are registered, regardless of their
point type.
</p>
<h6>
<a name="geometry.reference.adapted.register.boost_geometry_register_ring_templated.h1"></a>
<span><a name="geometry.reference.adapted.register.boost_geometry_register_ring_templated.synopsis"></a></span><a class="link" href="boost_geometry_register_ring_templated.html#geometry.reference.adapted.register.boost_geometry_register_ring_templated.synopsis">Synopsis</a>
</h6>
<p>
</p>
<pre class="programlisting"><span class="preprocessor">#define</span> <span class="identifier">BOOST_GEOMETRY_REGISTER_RING_TEMPLATED</span><span class="special">(</span><span class="identifier">Ring</span><span class="special">)</span></pre>
<p>
</p>
<h6>
<a name="geometry.reference.adapted.register.boost_geometry_register_ring_templated.h2"></a>
<span><a name="geometry.reference.adapted.register.boost_geometry_register_ring_templated.parameters"></a></span><a class="link" href="boost_geometry_register_ring_templated.html#geometry.reference.adapted.register.boost_geometry_register_ring_templated.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>
Ring
</p>
</td>
<td>
<p>
ring (without template parameters) type to be registered
</p>
</td>
</tr></tbody>
</table></div>
<h6>
<a name="geometry.reference.adapted.register.boost_geometry_register_ring_templated.h3"></a>
<span><a name="geometry.reference.adapted.register.boost_geometry_register_ring_templated.header"></a></span><a class="link" href="boost_geometry_register_ring_templated.html#geometry.reference.adapted.register.boost_geometry_register_ring_templated.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">ring</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_ring_templated.h4"></a>
<span><a name="geometry.reference.adapted.register.boost_geometry_register_ring_templated.example"></a></span><a class="link" href="boost_geometry_register_ring_templated.html#geometry.reference.adapted.register.boost_geometry_register_ring_templated.example">Example</a>
</h6>
<p>
Show the use of the macro BOOST_GEOMETRY_REGISTER_RING_TEMPLATED
</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">deque</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">point_xy</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">ring</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span>
<span class="comment">// Adapt any deque to Boost.Geometry Ring Concept</span>
<span class="identifier">BOOST_GEOMETRY_REGISTER_RING_TEMPLATED</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">deque</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="identifier">std</span><span class="special">::</span><span class="identifier">deque</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">model</span><span class="special">::</span><span class="identifier">d2</span><span class="special">::</span><span class="identifier">point_xy</span><span class="special"><</span><span class="keyword">double</span><span class="special">></span> <span class="special">></span> <span class="identifier">ring</span><span class="special">(</span><span class="number">3</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">assign_values</span><span class="special">(</span><span class="identifier">ring</span><span class="special">[</span><span class="number">0</span><span class="special">],</span> <span class="number">0</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">assign_values</span><span class="special">(</span><span class="identifier">ring</span><span class="special">[</span><span class="number">2</span><span class="special">],</span> <span class="number">4</span><span class="special">,</span> <span class="number">1</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">assign_values</span><span class="special">(</span><span class="identifier">ring</span><span class="special">[</span><span class="number">1</span><span class="special">],</span> <span class="number">1</span><span class="special">,</span> <span class="number">4</span><span class="special">);</span>
<span class="comment">// Boost.Geometry algorithms work on any deque now</span>
<span class="identifier">boost</span><span class="special">::</span><span class="identifier">geometry</span><span class="special">::</span><span class="identifier">correct</span><span class="special">(</span><span class="identifier">ring</span><span class="special">);</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">ring</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="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"Contents: "</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">wkt</span><span class="special">(</span><span class="identifier">ring</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: 7.5
Line: ((0, 0), (1, 4), (4, 1), (0, 0))
</pre>
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Gehrels, Bruno Lalande, Mateusz Loskot<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying
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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