1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 4<title>Boost.Tuple</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="../adapted.html" title="Adapted models"> 9<link rel="prev" href="boost_fusion.html" title="Boost.Fusion"> 10<link rel="next" href="boost_polygon.html" title="Boost.Polygon"> 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_fusion.html"><img src="../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../adapted.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_polygon.html"><img src="../../../../../../../doc/src/images/next.png" alt="Next"></a> 24</div> 25<div class="section"> 26<div class="titlepage"><div><div><h4 class="title"> 27<a name="geometry.reference.adapted.boost_tuple"></a><a class="link" href="boost_tuple.html" title="Boost.Tuple">Boost.Tuple</a> 28</h4></div></div></div> 29<p> 30 Boost.Tuple tuples with arithmetic elements can be used as points within 31 Boost.Geometry 32 </p> 33<h6> 34<a name="geometry.reference.adapted.boost_tuple.h0"></a> 35 <span class="phrase"><a name="geometry.reference.adapted.boost_tuple.description"></a></span><a class="link" href="boost_tuple.html#geometry.reference.adapted.boost_tuple.description">Description</a> 36 </h6> 37<p> 38 Boost.Tuple fixed sized collections, such as boost::tuple<double, double>, 39 are (optionally) adapted to the Boost.Geometry point concept. 40 </p> 41<p> 42 Boost.Tuple pairs or triples might have mutually different types, such 43 as a boost::tuple<float, double>. Boost.Geometry reports the first 44 type as its <a class="link" href="../core/coordinate_type.html" title="coordinate_type">coordinate_type</a>. 45 </p> 46<p> 47 Boost.Geometry supports Boost.Tuple pairs, triples, quadruples, etc up 48 to tuples with 10 elements (though most algorithms do not support so many 49 dimensions). 50 </p> 51<p> 52 A tuple can be the point type used by the models linestring, polygon, segment, 53 box, and ring. 54 </p> 55<h6> 56<a name="geometry.reference.adapted.boost_tuple.h1"></a> 57 <span class="phrase"><a name="geometry.reference.adapted.boost_tuple.model_of"></a></span><a class="link" href="boost_tuple.html#geometry.reference.adapted.boost_tuple.model_of">Model 58 of</a> 59 </h6> 60<p> 61 <a class="link" href="../concepts/concept_point.html" title="Point Concept">Point Concept</a> 62 </p> 63<h6> 64<a name="geometry.reference.adapted.boost_tuple.h2"></a> 65 <span class="phrase"><a name="geometry.reference.adapted.boost_tuple.header"></a></span><a class="link" href="boost_tuple.html#geometry.reference.adapted.boost_tuple.header">Header</a> 66 </h6> 67<p> 68 <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="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></code> 69 </p> 70<p> 71 The standard header <code class="computeroutput"><span class="identifier">boost</span><span class="special">/</span><span class="identifier">geometry</span><span class="special">.</span><span class="identifier">hpp</span></code> 72 does not include this header. 73 </p> 74<h6> 75<a name="geometry.reference.adapted.boost_tuple.h3"></a> 76 <span class="phrase"><a name="geometry.reference.adapted.boost_tuple.example"></a></span><a class="link" href="boost_tuple.html#geometry.reference.adapted.boost_tuple.example">Example</a> 77 </h6> 78<p> 79 Shows how to use Boost.Tuple points in Boost.Geometry 80 </p> 81<p> 82 Working with Boost.Tuples in Boost.Geometry is straightforward and shown 83 in various other examples as well. 84 </p> 85<p> 86</p> 87<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">iostream</span><span class="special">></span> 88 89<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> 90<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> 91<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> 92 93<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> 94 95<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> 96<span class="special">{</span> 97 <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">polygon</span><span class="special"><</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">tuple</span><span class="special"><</span><span class="keyword">double</span><span class="special">,</span> <span class="keyword">double</span><span class="special">></span> <span class="special">></span> <span class="identifier">poly</span><span class="special">;</span> 98 <span class="identifier">poly</span><span class="special">.</span><span class="identifier">outer</span><span class="special">().</span><span class="identifier">push_back</span><span class="special">(</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">make_tuple</span><span class="special">(</span><span class="number">1.0</span><span class="special">,</span> <span class="number">2.0</span><span class="special">));</span> 99 <span class="identifier">poly</span><span class="special">.</span><span class="identifier">outer</span><span class="special">().</span><span class="identifier">push_back</span><span class="special">(</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">make_tuple</span><span class="special">(</span><span class="number">6.0</span><span class="special">,</span> <span class="number">4.0</span><span class="special">));</span> 100 <span class="identifier">poly</span><span class="special">.</span><span class="identifier">outer</span><span class="special">().</span><span class="identifier">push_back</span><span class="special">(</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">make_tuple</span><span class="special">(</span><span class="number">5.0</span><span class="special">,</span> <span class="number">1.0</span><span class="special">));</span> 101 <span class="identifier">poly</span><span class="special">.</span><span class="identifier">outer</span><span class="special">().</span><span class="identifier">push_back</span><span class="special">(</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">make_tuple</span><span class="special">(</span><span class="number">1.0</span><span class="special">,</span> <span class="number">2.0</span><span class="special">));</span> 102 103 <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">poly</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> 104 <span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"Contains (1.5, 2.5): "</span> 105 <span class="special"><<</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">boolalpha</span> 106 <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">within</span><span class="special">(</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">make_tuple</span><span class="special">(</span><span class="number">1.5</span><span class="special">,</span> <span class="number">2.5</span><span class="special">),</span> <span class="identifier">poly</span><span class="special">)</span> 107 <span class="special"><<</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">endl</span><span class="special">;</span> 108 109 <span class="keyword">return</span> <span class="number">0</span><span class="special">;</span> 110<span class="special">}</span> 111</pre> 112<p> 113 </p> 114<p> 115 Output: 116 </p> 117<pre class="programlisting">Area: 6.5 118Contains (1.5, 2.5): false 119</pre> 120</div> 121<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 122<td align="left"></td> 123<td align="right"><div class="copyright-footer">Copyright © 2009-2019 Barend Gehrels, Bruno Lalande, Mateusz Loskot, Adam 124 Wulkiewicz, Oracle and/or its affiliates<p> 125 Distributed under the Boost Software License, Version 1.0. (See accompanying 126 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>) 127 </p> 128</div></td> 129</tr></table> 130<hr> 131<div class="spirit-nav"> 132<a accesskey="p" href="boost_fusion.html"><img src="../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../adapted.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_polygon.html"><img src="../../../../../../../doc/src/images/next.png" alt="Next"></a> 133</div> 134</body> 135</html> 136
