1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 4<title>exterior_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="../exterior_ring.html" title="exterior_ring"> 9<link rel="prev" href="../exterior_ring.html" title="exterior_ring"> 10<link rel="next" href="exterior_ring_1_const_version.html" title="exterior_ring (const version)"> 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="../exterior_ring.html"><img src="../../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../exterior_ring.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="exterior_ring_1_const_version.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.access.exterior_ring.exterior_ring_1"></a><a class="link" href="exterior_ring_1.html" title="exterior_ring">exterior_ring</a> 28</h5></div></div></div> 29<p> 30 <a class="indexterm" name="idm45635712094624"></a> 31Function to get the exterior_ring ring of a polygon. 32 </p> 33<h6> 34<a name="geometry.reference.access.exterior_ring.exterior_ring_1.h0"></a> 35 <span class="phrase"><a name="geometry.reference.access.exterior_ring.exterior_ring_1.synopsis"></a></span><a class="link" href="exterior_ring_1.html#geometry.reference.access.exterior_ring.exterior_ring_1.synopsis">Synopsis</a> 36 </h6> 37<p> 38</p> 39<pre class="programlisting"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> <span class="identifier">Polygon</span><span class="special">></span> 40<span class="identifier">ring_return_type</span><span class="special"><</span><span class="identifier">Polygon</span><span class="special">>::</span><span class="identifier">type</span> <span class="identifier">exterior_ring</span><span class="special">(</span><span class="identifier">Polygon</span> <span class="special">&</span> <span class="identifier">polygon</span><span class="special">)</span></pre> 41<p> 42 </p> 43<h6> 44<a name="geometry.reference.access.exterior_ring.exterior_ring_1.h1"></a> 45 <span class="phrase"><a name="geometry.reference.access.exterior_ring.exterior_ring_1.parameters"></a></span><a class="link" href="exterior_ring_1.html#geometry.reference.access.exterior_ring.exterior_ring_1.parameters">Parameters</a> 46 </h6> 47<div class="informaltable"><table class="table"> 48<colgroup> 49<col> 50<col> 51<col> 52<col> 53</colgroup> 54<thead><tr> 55<th> 56 <p> 57 Type 58 </p> 59 </th> 60<th> 61 <p> 62 Concept 63 </p> 64 </th> 65<th> 66 <p> 67 Name 68 </p> 69 </th> 70<th> 71 <p> 72 Description 73 </p> 74 </th> 75</tr></thead> 76<tbody><tr> 77<td> 78 <p> 79 Polygon & 80 </p> 81 </td> 82<td> 83 <p> 84 polygon type 85 </p> 86 </td> 87<td> 88 <p> 89 polygon 90 </p> 91 </td> 92<td> 93 <p> 94 the polygon to get the exterior ring from 95 </p> 96 </td> 97</tr></tbody> 98</table></div> 99<h6> 100<a name="geometry.reference.access.exterior_ring.exterior_ring_1.h2"></a> 101 <span class="phrase"><a name="geometry.reference.access.exterior_ring.exterior_ring_1.returns"></a></span><a class="link" href="exterior_ring_1.html#geometry.reference.access.exterior_ring.exterior_ring_1.returns">Returns</a> 102 </h6> 103<p> 104 a reference to the exterior ring 105 </p> 106<h6> 107<a name="geometry.reference.access.exterior_ring.exterior_ring_1.h3"></a> 108 <span class="phrase"><a name="geometry.reference.access.exterior_ring.exterior_ring_1.header"></a></span><a class="link" href="exterior_ring_1.html#geometry.reference.access.exterior_ring.exterior_ring_1.header">Header</a> 109 </h6> 110<p> 111 Either 112 </p> 113<p> 114 <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> 115 </p> 116<p> 117 Or 118 </p> 119<p> 120 <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">core</span><span class="special">/</span><span class="identifier">exterior_ring</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span></code> 121 </p> 122</div> 123<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 124<td align="left"></td> 125<td align="right"><div class="copyright-footer">Copyright © 2009-2019 Barend Gehrels, Bruno Lalande, Mateusz Loskot, Adam 126 Wulkiewicz, Oracle and/or its affiliates<p> 127 Distributed under the Boost Software License, Version 1.0. (See accompanying 128 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>) 129 </p> 130</div></td> 131</tr></table> 132<hr> 133<div class="spirit-nav"> 134<a accesskey="p" href="../exterior_ring.html"><img src="../../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../exterior_ring.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="exterior_ring_1_const_version.html"><img src="../../../../../../../../doc/src/images/next.png" alt="Next"></a> 135</div> 136</body> 137</html> 138
