1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 4<title>BOOST_GEOMETRY_REGISTER_RING</title> 5<link rel="stylesheet" href="../../../../../../../../doc/src/boostbook.css" type="text/css"> 6<meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> 7<link rel="home" href="../../../../index.html" title="Chapter 1. Geometry"> 8<link rel="up" href="../register.html" title="Macro's for adaption"> 9<link rel="prev" href="boost_geometry_register_point_3d_get_set.html" title="BOOST_GEOMETRY_REGISTER_POINT_3D_GET_SET"> 10<link rel="next" href="boost_geometry_register_ring_templated.html" title="BOOST_GEOMETRY_REGISTER_RING_TEMPLATED"> 11</head> 12<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> 13<table cellpadding="2" width="100%"><tr> 14<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../../../../boost.png"></td> 15<td align="center"><a href="../../../../../../../../index.html">Home</a></td> 16<td align="center"><a href="../../../../../../../../libs/libraries.htm">Libraries</a></td> 17<td align="center"><a href="http://www.boost.org/users/people.html">People</a></td> 18<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td> 19<td align="center"><a href="../../../../../../../../more/index.htm">More</a></td> 20</tr></table> 21<hr> 22<div class="spirit-nav"> 23<a accesskey="p" href="boost_geometry_register_point_3d_get_set.html"><img src="../../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../register.html"><img src="../../../../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="boost_geometry_register_ring_templated.html"><img src="../../../../../../../../doc/src/images/next.png" alt="Next"></a> 24</div> 25<div class="section"> 26<div class="titlepage"><div><div><h5 class="title"> 27<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> 28</h5></div></div></div> 29<p> 30 <a class="indexterm" name="idm45635708496112"></a> 31Macro to register a ring. 32 </p> 33<h6> 34<a name="geometry.reference.adapted.register.boost_geometry_register_ring.h0"></a> 35 <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> 36 </h6> 37<p> 38 The macro BOOST_GEOMETRY_REGISTER_RING registers a ring such that it 39 is recognized by Boost.Geometry and that Boost.Geometry functionality 40 can used with the specified type. The ring may contain template parameters, 41 which must be specified then. 42 </p> 43<h6> 44<a name="geometry.reference.adapted.register.boost_geometry_register_ring.h1"></a> 45 <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> 46 </h6> 47<p> 48</p> 49<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> 50<p> 51 </p> 52<h6> 53<a name="geometry.reference.adapted.register.boost_geometry_register_ring.h2"></a> 54 <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> 55 </h6> 56<div class="informaltable"><table class="table"> 57<colgroup> 58<col> 59<col> 60</colgroup> 61<thead><tr> 62<th> 63 <p> 64 Name 65 </p> 66 </th> 67<th> 68 <p> 69 Description 70 </p> 71 </th> 72</tr></thead> 73<tbody><tr> 74<td> 75 <p> 76 Ring 77 </p> 78 </td> 79<td> 80 <p> 81 ring type to be registered 82 </p> 83 </td> 84</tr></tbody> 85</table></div> 86<h6> 87<a name="geometry.reference.adapted.register.boost_geometry_register_ring.h3"></a> 88 <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> 89 </h6> 90<p> 91 <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> 92 </p> 93<h6> 94<a name="geometry.reference.adapted.register.boost_geometry_register_ring.h4"></a> 95 <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> 96 </h6> 97<p> 98 Show the use of the macro BOOST_GEOMETRY_REGISTER_RING 99 </p> 100<p> 101</p> 102<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">iostream</span><span class="special">></span> 103 104<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> 105<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> 106<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> 107 108<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> 109 110<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> 111 112<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> 113<span class="special">{</span> 114 <span class="comment">// Normal usage of std::</span> 115 <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> 116 <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> 117 <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> 118 <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> 119 120 121 <span class="comment">// Usage of Boost.Geometry</span> 122 <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> 123 <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> 124 <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> 125 126 <span class="keyword">return</span> <span class="number">0</span><span class="special">;</span> 127<span class="special">}</span> 128</pre> 129<p> 130 </p> 131<div class="calloutlist"><table border="0" summary="Callout list"><tr> 132<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> 133<td valign="top" align="left"><p> 134 The magic: adapt vector to Boost.Geometry Ring Concept 135 </p></td> 136</tr></table></div> 137<p> 138 Output: 139 </p> 140<pre class="programlisting">Area: 0.5 141WKT: POLYGON((1 1,2 2,2 1,1 1)) 142</pre> 143</div> 144<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 145<td align="left"></td> 146<td align="right"><div class="copyright-footer">Copyright © 2009-2019 Barend Gehrels, Bruno Lalande, Mateusz Loskot, Adam 147 Wulkiewicz, Oracle and/or its affiliates<p> 148 Distributed under the Boost Software License, Version 1.0. (See accompanying 149 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>) 150 </p> 151</div></td> 152</tr></table> 153<hr> 154<div class="spirit-nav"> 155<a accesskey="p" href="boost_geometry_register_point_3d_get_set.html"><img src="../../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../register.html"><img src="../../../../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="boost_geometry_register_ring_templated.html"><img src="../../../../../../../../doc/src/images/next.png" alt="Next"></a> 156</div> 157</body> 158</html> 159
