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| <a name="geometry.reference.adapted.register.boost_geometry_register_ring"></a><a class="link" href="boost_geometry_register_ring.html" title="BOOST_GEOMETRY_REGISTER_RING">BOOST_GEOMETRY_REGISTER_RING</a> |
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| <p> |
| <a class="indexterm" name="idp105490928"></a> |
| Macro to register a ring. |
| </p> |
| <h6> |
| <a name="geometry.reference.adapted.register.boost_geometry_register_ring.h0"></a> |
| <span class="phrase"><a name="geometry.reference.adapted.register.boost_geometry_register_ring.description"></a></span><a class="link" href="boost_geometry_register_ring.html#geometry.reference.adapted.register.boost_geometry_register_ring.description">Description</a> |
| </h6> |
| <p> |
| The macro BOOST_GEOMETRY_REGISTER_RING registers a ring such that it |
| is recognized by Boost.Geometry and that Boost.Geometry functionality |
| can used with the specified type. The ring may contain template parameters, |
| which must be specified then. |
| </p> |
| <h6> |
| <a name="geometry.reference.adapted.register.boost_geometry_register_ring.h1"></a> |
| <span class="phrase"><a name="geometry.reference.adapted.register.boost_geometry_register_ring.synopsis"></a></span><a class="link" href="boost_geometry_register_ring.html#geometry.reference.adapted.register.boost_geometry_register_ring.synopsis">Synopsis</a> |
| </h6> |
| <p> |
| </p> |
| <pre class="programlisting"><span class="preprocessor">#define</span> <span class="identifier">BOOST_GEOMETRY_REGISTER_RING</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.h2"></a> |
| <span class="phrase"><a name="geometry.reference.adapted.register.boost_geometry_register_ring.parameters"></a></span><a class="link" href="boost_geometry_register_ring.html#geometry.reference.adapted.register.boost_geometry_register_ring.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 type to be registered |
| </p> |
| </td> |
| </tr></tbody> |
| </table></div> |
| <h6> |
| <a name="geometry.reference.adapted.register.boost_geometry_register_ring.h3"></a> |
| <span class="phrase"><a name="geometry.reference.adapted.register.boost_geometry_register_ring.header"></a></span><a class="link" href="boost_geometry_register_ring.html#geometry.reference.adapted.register.boost_geometry_register_ring.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.h4"></a> |
| <span class="phrase"><a name="geometry.reference.adapted.register.boost_geometry_register_ring.example"></a></span><a class="link" href="boost_geometry_register_ring.html#geometry.reference.adapted.register.boost_geometry_register_ring.example">Example</a> |
| </h6> |
| <p> |
| Show the use of the macro BOOST_GEOMETRY_REGISTER_RING |
| </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">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="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">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="identifier">point_2d</span><span class="special">;</span> |
| |
| <span class="identifier">BOOST_GEOMETRY_REGISTER_RING</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">point_2d</span><span class="special">>)</span> <a class="co" name="geometry.reference.adapted.register.boost_geometry_register_ring.c0" href="boost_geometry_register_ring.html#geometry.reference.adapted.register.boost_geometry_register_ring.c1"><img src="../../../../../../../../doc/src/images/callouts/1.png" alt="1" border="0"></a> |
| |
| <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">point_2d</span><span class="special">></span> <span class="identifier">ring</span><span class="special">;</span> |
| <span class="identifier">ring</span><span class="special">.</span><span class="identifier">push_back</span><span class="special">(</span><span class="identifier">point_2d</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="identifier">ring</span><span class="special">.</span><span class="identifier">push_back</span><span class="special">(</span><span class="identifier">point_2d</span><span class="special">(</span><span class="number">2</span><span class="special">,</span> <span class="number">2</span><span class="special">));</span> |
| <span class="identifier">ring</span><span class="special">.</span><span class="identifier">push_back</span><span class="special">(</span><span class="identifier">point_2d</span><span class="special">(</span><span class="number">2</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">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">"WKT: "</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> |
| <div class="calloutlist"><table border="0" summary="Callout list"><tr> |
| <td width="5%" valign="top" align="left"><p><a name="geometry.reference.adapted.register.boost_geometry_register_ring.c1"></a><a href="#geometry.reference.adapted.register.boost_geometry_register_ring.c0"><img src="../../../../../../../../doc/src/images/callouts/1.png" alt="1" border="0"></a> </p></td> |
| <td valign="top" align="left"><p> |
| The magic: adapt vector to Boost.Geometry Ring Concept |
| </p></td> |
| </tr></table></div> |
| <p> |
| Output: |
| </p> |
| <pre class="programlisting">Area: 0.5 |
| WKT: POLYGON((1 1,2 2,2 1,1 1)) |
| </pre> |
| </div> |
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| <td align="right"><div class="copyright-footer">Copyright © 2009-2015 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>) |
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