libs/geometry/doc/html/geometry/reference/algorithms/assign/assign_inverse.html

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  26 <div class="titlepage"><div><div><h5 class="title">
  27 <a name="geometry.reference.algorithms.assign.assign_inverse"></a><a class="link" href="assign_inverse.html" title="assign_inverse">assign_inverse</a>
  28 </h5></div></div></div>
  29 <p>
  30             <a class="indexterm" name="idm46187009252128"></a>
  31 assign to a box inverse infinite
  32           </p>
  33 <h6>
  34 <a name="geometry.reference.algorithms.assign.assign_inverse.h0"></a>
  35             <span class="phrase"><a name="geometry.reference.algorithms.assign.assign_inverse.description"></a></span><a class="link" href="assign_inverse.html#geometry.reference.algorithms.assign.assign_inverse.description">Description</a>
  36           </h6>
  37 <p>
  38             The assign_inverse function initialize a 2D or 3D box with large coordinates,
  39             the min corner is very large, the max corner is very small. This is a
  40             convenient starting point to collect the minimum bounding box of a geometry.
  41           </p>
  42 <h6>
  43 <a name="geometry.reference.algorithms.assign.assign_inverse.h1"></a>
  44             <span class="phrase"><a name="geometry.reference.algorithms.assign.assign_inverse.synopsis"></a></span><a class="link" href="assign_inverse.html#geometry.reference.algorithms.assign.assign_inverse.synopsis">Synopsis</a>
  45           </h6>
  46 <p>
  47 </p>
  48 <pre class="programlisting"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">Geometry</span><span class="special">&gt;</span>
  49 <span class="keyword">void</span> <span class="identifier">assign_inverse</span><span class="special">(</span><span class="identifier">Geometry</span> <span class="special">&amp;</span> <span class="identifier">geometry</span><span class="special">)</span></pre>
  50 <p>
  51           </p>
  52 <h6>
  53 <a name="geometry.reference.algorithms.assign.assign_inverse.h2"></a>
  54             <span class="phrase"><a name="geometry.reference.algorithms.assign.assign_inverse.parameters"></a></span><a class="link" href="assign_inverse.html#geometry.reference.algorithms.assign.assign_inverse.parameters">Parameters</a>
  55           </h6>
  56 <div class="informaltable"><table class="table">
  57 <colgroup>
  58 <col>
  59 <col>
  60 <col>
  61 <col>
  62 </colgroup>
  63 <thead><tr>
  64 <th>
  65                     <p>
  66                       Type
  67                     </p>
  68                   </th>
  69 <th>
  70                     <p>
  71                       Concept
  72                     </p>
  73                   </th>
  74 <th>
  75                     <p>
  76                       Name
  77                     </p>
  78                   </th>
  79 <th>
  80                     <p>
  81                       Description
  82                     </p>
  83                   </th>
  84 </tr></thead>
  85 <tbody><tr>
  86 <td>
  87                     <p>
  88                       Geometry &amp;
  89                     </p>
  90                   </td>
  91 <td>
  92                     <p>
  93                       Any type fulfilling a Geometry Concept
  94                     </p>
  95                   </td>
  96 <td>
  97                     <p>
  98                       geometry
  99                     </p>
 100                   </td>
 101 <td>
 102                     <p>
 103                       A model of the specified concept
 104                     </p>
 105                   </td>
 106 </tr></tbody>
 107 </table></div>
 108 <h6>
 109 <a name="geometry.reference.algorithms.assign.assign_inverse.h3"></a>
 110             <span class="phrase"><a name="geometry.reference.algorithms.assign.assign_inverse.header"></a></span><a class="link" href="assign_inverse.html#geometry.reference.algorithms.assign.assign_inverse.header">Header</a>
 111           </h6>
 112 <p>
 113             Either
 114           </p>
 115 <p>
 116             <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</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">&gt;</span></code>
 117           </p>
 118 <p>
 119             Or
 120           </p>
 121 <p>
 122             <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</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">assign</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
 123           </p>
 124 <h6>
 125 <a name="geometry.reference.algorithms.assign.assign_inverse.h4"></a>
 126             <span class="phrase"><a name="geometry.reference.algorithms.assign.assign_inverse.example"></a></span><a class="link" href="assign_inverse.html#geometry.reference.algorithms.assign.assign_inverse.example">Example</a>
 127           </h6>
 128 <p>
 129             Usage of assign_inverse and expand to conveniently determine bounding
 130             3D box of two points
 131           </p>
 132 <p>
 133 </p>
 134 <pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">iostream</span><span class="special">&gt;</span>
 135
 136 <span class="preprocessor">#include</span> <span class="special">&lt;</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">&gt;</span>
 137 <span class="preprocessor">#include</span> <span class="special">&lt;</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">&gt;</span>
 138 <span class="preprocessor">#include</span> <span class="special">&lt;</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</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
 139
 140 <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>
 141
 142 <span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span>
 143 <span class="special">{</span>
 144     <span class="keyword">typedef</span> <span class="identifier">model</span><span class="special">::</span><span class="identifier">point</span><span class="special">&lt;</span><span class="keyword">float</span><span class="special">,</span> <span class="number">3</span><span class="special">,</span> <span class="identifier">cs</span><span class="special">::</span><span class="identifier">cartesian</span><span class="special">&gt;</span> <span class="identifier">point</span><span class="special">;</span>
 145     <span class="keyword">typedef</span> <span class="identifier">model</span><span class="special">::</span><span class="identifier">box</span><span class="special">&lt;</span><span class="identifier">point</span><span class="special">&gt;</span> <span class="identifier">box</span><span class="special">;</span>
 146
 147     <span class="identifier">box</span> <span class="identifier">all</span><span class="special">;</span>
 148     <span class="identifier">assign_inverse</span><span class="special">(</span><span class="identifier">all</span><span class="special">);</span>
 149     <span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special">&lt;&lt;</span> <span class="identifier">dsv</span><span class="special">(</span><span class="identifier">all</span><span class="special">)</span> <span class="special">&lt;&lt;</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">endl</span><span class="special">;</span>
 150     <span class="identifier">expand</span><span class="special">(</span><span class="identifier">all</span><span class="special">,</span> <span class="identifier">point</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">0</span><span class="special">));</span>
 151     <span class="identifier">expand</span><span class="special">(</span><span class="identifier">all</span><span class="special">,</span> <span class="identifier">point</span><span class="special">(</span><span class="number">1</span><span class="special">,</span> <span class="number">2</span><span class="special">,</span> <span class="number">3</span><span class="special">));</span>
 152     <span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special">&lt;&lt;</span> <span class="identifier">dsv</span><span class="special">(</span><span class="identifier">all</span><span class="special">)</span> <span class="special">&lt;&lt;</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">endl</span><span class="special">;</span>
 153
 154     <span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
 155 <span class="special">}</span>
 156 </pre>
 157 <p>
 158           </p>
 159 <p>
 160             Output:
 161           </p>
 162 <pre class="programlisting">((3.40282e+038, 3.40282e+038, 3.40282e+038), (-3.40282e+038, -3.40282e+038, -3.40282e+038))
 163 ((0, 0, 0), (1, 2, 3))</pre>
 164 <h6>
 165 <a name="geometry.reference.algorithms.assign.assign_inverse.h5"></a>
 166             <span class="phrase"><a name="geometry.reference.algorithms.assign.assign_inverse.see_also"></a></span><a class="link" href="assign_inverse.html#geometry.reference.algorithms.assign.assign_inverse.see_also">See
 167             also</a>
 168           </h6>
 169 <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">
 170                 <a class="link" href="../make/make_inverse.html" title="make_inverse">make_inverse</a>
 171               </li></ul></div>
 172 </div>
 173 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
 174 <td align="left"></td>
 175 <td align="right"><div class="copyright-footer">Copyright &#169; 2009-2019 Barend Gehrels, Bruno Lalande, Mateusz Loskot, Adam
 176       Wulkiewicz, Oracle and/or its affiliates<p>
 177         Distributed under the Boost Software License, Version 1.0. (See accompanying
 178         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>)
 179       </p>
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