1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 4<title>make_inverse</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="../make.html" title="make"> 9<link rel="prev" href="make_3_3_coordinate_values.html" title="make (3 coordinate values)"> 10<link rel="next" href="make_zero.html" title="make_zero"> 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="make_3_3_coordinate_values.html"><img src="../../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../make.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="make_zero.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.algorithms.make.make_inverse"></a><a class="link" href="make_inverse.html" title="make_inverse">make_inverse</a> 28</h5></div></div></div> 29<p> 30 <a class="indexterm" name="idm45635692023584"></a> 31Construct a box with inverse infinite coordinates. 32 </p> 33<h6> 34<a name="geometry.reference.algorithms.make.make_inverse.h0"></a> 35 <span class="phrase"><a name="geometry.reference.algorithms.make.make_inverse.description"></a></span><a class="link" href="make_inverse.html#geometry.reference.algorithms.make.make_inverse.description">Description</a> 36 </h6> 37<p> 38 The make_inverse function initializes a 2D or 3D box with large coordinates, 39 the min corner is very large, the max corner is very small. This is useful 40 e.g. in combination with the expand function, to determine the bounding 41 box of a series of geometries. 42 </p> 43<h6> 44<a name="geometry.reference.algorithms.make.make_inverse.h1"></a> 45 <span class="phrase"><a name="geometry.reference.algorithms.make.make_inverse.synopsis"></a></span><a class="link" href="make_inverse.html#geometry.reference.algorithms.make.make_inverse.synopsis">Synopsis</a> 46 </h6> 47<p> 48</p> 49<pre class="programlisting"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> <span class="identifier">Geometry</span><span class="special">></span> 50<span class="identifier">Geometry</span> <span class="identifier">make_inverse</span><span class="special">()</span></pre> 51<p> 52 </p> 53<h6> 54<a name="geometry.reference.algorithms.make.make_inverse.h2"></a> 55 <span class="phrase"><a name="geometry.reference.algorithms.make.make_inverse.parameters"></a></span><a class="link" href="make_inverse.html#geometry.reference.algorithms.make.make_inverse.parameters">Parameters</a> 56 </h6> 57<div class="informaltable"><table class="table"> 58<colgroup> 59<col> 60<col> 61<col> 62<col> 63</colgroup> 64<thead><tr> 65<th> 66 <p> 67 Type 68 </p> 69 </th> 70<th> 71 <p> 72 Concept 73 </p> 74 </th> 75<th> 76 <p> 77 Name 78 </p> 79 </th> 80<th> 81 <p> 82 Description 83 </p> 84 </th> 85</tr></thead> 86<tbody><tr> 87<td> 88 <p> 89 Geometry 90 </p> 91 </td> 92<td> 93 <p> 94 Any type fulfilling a Geometry Concept 95 </p> 96 </td> 97<td> 98 <p> 99 - 100 </p> 101 </td> 102<td> 103 <p> 104 Must be specified 105 </p> 106 </td> 107</tr></tbody> 108</table></div> 109<h6> 110<a name="geometry.reference.algorithms.make.make_inverse.h3"></a> 111 <span class="phrase"><a name="geometry.reference.algorithms.make.make_inverse.returns"></a></span><a class="link" href="make_inverse.html#geometry.reference.algorithms.make.make_inverse.returns">Returns</a> 112 </h6> 113<p> 114 The constructed geometry, here: a box 115 </p> 116<h6> 117<a name="geometry.reference.algorithms.make.make_inverse.h4"></a> 118 <span class="phrase"><a name="geometry.reference.algorithms.make.make_inverse.header"></a></span><a class="link" href="make_inverse.html#geometry.reference.algorithms.make.make_inverse.header">Header</a> 119 </h6> 120<p> 121 Either 122 </p> 123<p> 124 <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> 125 </p> 126<p> 127 Or 128 </p> 129<p> 130 <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">algorithms</span><span class="special">/</span><span class="identifier">make</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span></code> 131 </p> 132<h6> 133<a name="geometry.reference.algorithms.make.make_inverse.h5"></a> 134 <span class="phrase"><a name="geometry.reference.algorithms.make.make_inverse.example"></a></span><a class="link" href="make_inverse.html#geometry.reference.algorithms.make.make_inverse.example">Example</a> 135 </h6> 136<p> 137 Usage of make_inverse and expand to conveniently determine bounding box 138 of several objects 139 </p> 140<p> 141</p> 142<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">iostream</span><span class="special">></span> 143 144<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> 145<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">box</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> 146<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> 147 148<span class="keyword">using</span> <span class="keyword">namespace</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">geometry</span><span class="special">;</span> 149 150<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> 151<span class="special">{</span> 152 153 <span class="keyword">typedef</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</span><span class="special">;</span> 154 <span class="keyword">typedef</span> <span class="identifier">model</span><span class="special">::</span><span class="identifier">box</span><span class="special"><</span><span class="identifier">point</span><span class="special">></span> <span class="identifier">box</span><span class="special">;</span> 155 156 <span class="identifier">box</span> <span class="identifier">all</span> <span class="special">=</span> <span class="identifier">make_inverse</span><span class="special"><</span><span class="identifier">box</span><span class="special">>();</span> 157 <span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special"><<</span> <span class="identifier">dsv</span><span class="special">(</span><span class="identifier">all</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> 158 <span class="identifier">expand</span><span class="special">(</span><span class="identifier">all</span><span class="special">,</span> <span class="identifier">make</span><span class="special"><</span><span class="identifier">box</span><span class="special">>(</span><span class="number">0</span><span class="special">,</span> <span class="number">0</span><span class="special">,</span> <span class="number">3</span><span class="special">,</span> <span class="number">4</span><span class="special">));</span> 159 <span class="identifier">expand</span><span class="special">(</span><span class="identifier">all</span><span class="special">,</span> <span class="identifier">make</span><span class="special"><</span><span class="identifier">box</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="number">5</span><span class="special">,</span> <span class="number">6</span><span class="special">));</span> 160 <span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special"><<</span> <span class="identifier">dsv</span><span class="special">(</span><span class="identifier">all</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> 161 162 <span class="keyword">return</span> <span class="number">0</span><span class="special">;</span> 163<span class="special">}</span> 164</pre> 165<p> 166 </p> 167<p> 168 Output: 169 </p> 170<pre class="programlisting">((1.79769e+308, 1.79769e+308), (-1.79769e+308, -1.79769e+308)) 171((0, 0), (5, 6)) 172</pre> 173<h6> 174<a name="geometry.reference.algorithms.make.make_inverse.h6"></a> 175 <span class="phrase"><a name="geometry.reference.algorithms.make.make_inverse.see_also"></a></span><a class="link" href="make_inverse.html#geometry.reference.algorithms.make.make_inverse.see_also">See 176 also</a> 177 </h6> 178<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem"> 179 <a class="link" href="../assign/assign_inverse.html" title="assign_inverse">assign_inverse</a> 180 </li></ul></div> 181</div> 182<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 183<td align="left"></td> 184<td align="right"><div class="copyright-footer">Copyright © 2009-2019 Barend Gehrels, Bruno Lalande, Mateusz Loskot, Adam 185 Wulkiewicz, Oracle and/or its affiliates<p> 186 Distributed under the Boost Software License, Version 1.0. (See accompanying 187 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>) 188 </p> 189</div></td> 190</tr></table> 191<hr> 192<div class="spirit-nav"> 193<a accesskey="p" href="make_3_3_coordinate_values.html"><img src="../../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../make.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="make_zero.html"><img src="../../../../../../../../doc/src/images/next.png" alt="Next"></a> 194</div> 195</body> 196</html> 197
