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<title>tag</title>
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<link rel="home" href="../../../index.html" title="Chapter 1. Geometry">
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<a name="geometry.reference.core.tag"></a><a class="link" href="tag.html" title="tag">tag</a>
</h4></div></div></div>
<p>
- <a class="indexterm" name="id941190"></a>
+ <a class="indexterm" name="idp125018304"></a>
Metafunction defining <span class="bold"><strong>type</strong></span> as the tag
of the specified geometry type.
</p>
<h6>
<a name="geometry.reference.core.tag.h0"></a>
- <span><a name="geometry.reference.core.tag.description"></a></span><a class="link" href="tag.html#geometry.reference.core.tag.description">Description</a>
+ <span class="phrase"><a name="geometry.reference.core.tag.description"></a></span><a class="link" href="tag.html#geometry.reference.core.tag.description">Description</a>
</h6>
<p>
With Boost.Geometry, tags are the driving force of the tag dispatching
</p>
<h6>
<a name="geometry.reference.core.tag.h1"></a>
- <span><a name="geometry.reference.core.tag.synopsis"></a></span><a class="link" href="tag.html#geometry.reference.core.tag.synopsis">Synopsis</a>
+ <span class="phrase"><a name="geometry.reference.core.tag.synopsis"></a></span><a class="link" href="tag.html#geometry.reference.core.tag.synopsis">Synopsis</a>
</h6>
<p>
</p>
</p>
<h6>
<a name="geometry.reference.core.tag.h2"></a>
- <span><a name="geometry.reference.core.tag.template_parameter_s_"></a></span><a class="link" href="tag.html#geometry.reference.core.tag.template_parameter_s_">Template
+ <span class="phrase"><a name="geometry.reference.core.tag.template_parameter_s_"></a></span><a class="link" href="tag.html#geometry.reference.core.tag.template_parameter_s_">Template
parameter(s)</a>
</h6>
<div class="informaltable"><table class="table">
</table></div>
<h6>
<a name="geometry.reference.core.tag.h3"></a>
- <span><a name="geometry.reference.core.tag.header"></a></span><a class="link" href="tag.html#geometry.reference.core.tag.header">Header</a>
+ <span class="phrase"><a name="geometry.reference.core.tag.header"></a></span><a class="link" href="tag.html#geometry.reference.core.tag.header">Header</a>
</h6>
<p>
Either
</p>
<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">geometry</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span></code>
+ <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">hpp</span><span class="special">></span></code>
</p>
<p>
Or
</p>
<h6>
<a name="geometry.reference.core.tag.h4"></a>
- <span><a name="geometry.reference.core.tag.metafunction_result_type"></a></span><a class="link" href="tag.html#geometry.reference.core.tag.metafunction_result_type">Metafunction
+ <span class="phrase"><a name="geometry.reference.core.tag.metafunction_result_type"></a></span><a class="link" href="tag.html#geometry.reference.core.tag.metafunction_result_type">Metafunction
result type</a>
</h6>
<p>
The metafunction tag defines <span class="bold"><strong>type</strong></span> as one
of the following tags:
</p>
-<div class="itemizedlist"><ul class="itemizedlist" type="disc">
+<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
point_tag
</li>
</ul></div>
<h6>
<a name="geometry.reference.core.tag.h5"></a>
- <span><a name="geometry.reference.core.tag.complexity"></a></span><a class="link" href="tag.html#geometry.reference.core.tag.complexity">Complexity</a>
+ <span class="phrase"><a name="geometry.reference.core.tag.complexity"></a></span><a class="link" href="tag.html#geometry.reference.core.tag.complexity">Complexity</a>
</h6>
<p>
Compile time
</p>
<h6>
<a name="geometry.reference.core.tag.h6"></a>
- <span><a name="geometry.reference.core.tag.example"></a></span><a class="link" href="tag.html#geometry.reference.core.tag.example">Example</a>
+ <span class="phrase"><a name="geometry.reference.core.tag.example"></a></span><a class="link" href="tag.html#geometry.reference.core.tag.example">Example</a>
</h6>
<p>
Shows how tag dispatching essentially works in Boost.Geometry
<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">multi</span><span class="special">/</span><span class="identifier">geometries</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="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">multi_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="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="keyword">template</span> <span class="special"><</span><span class="keyword">typename</span> <span class="identifier">Polygon</span><span class="special">></span>
<span class="keyword">static</span> <span class="keyword">inline</span> <span class="keyword">void</span> <span class="identifier">apply</span><span class="special">(</span><span class="identifier">Polygon</span> <span class="keyword">const</span><span class="special">&</span> <span class="identifier">p</span><span class="special">)</span>
<span class="special">{</span>
- <span class="comment">// Use the Boost.Geometry manipulator "dsv" </span>
+ <span class="comment">// Use the Boost.Geometry manipulator "dsv"</span>
<span class="comment">// working on all supported geometries</span>
<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"Hello POLYGON, you look like: "</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">dsv</span><span class="special">(</span><span class="identifier">p</span><span class="special">)</span>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
-<td align="right"><div class="copyright-footer">Copyright © 2009-2012 Barend
- Gehrels, Bruno Lalande, Mateusz Loskot<p>
+<td align="right"><div class="copyright-footer">Copyright © 2009-2014 Barend Gehrels, Bruno Lalande, Mateusz Loskot, Adam
+ Wulkiewicz, Oracle and/or its affiliates<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>)
</p>