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<div class="section">
<div class="titlepage"><div><div><h5 class="title">
<a name="geometry.reference.algorithms.assign.assign_inverse"></a><a class="link" href="assign_inverse.html" title="assign_inverse">assign_inverse</a>
</h5></div></div></div>
<p>
<a class="indexterm" name="idp106447216"></a>
assign to a box inverse infinite
</p>
<h6>
<a name="geometry.reference.algorithms.assign.assign_inverse.h0"></a>
<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>
</h6>
<p>
The assign_inverse function initialize a 2D or 3D box with large coordinates,
the min corner is very large, the max corner is very small. This is a
convenient starting point to collect the minimum bounding box of a geometry.
</p>
<h6>
<a name="geometry.reference.algorithms.assign.assign_inverse.h1"></a>
<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>
</h6>
<p>
</p>
<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>
<span class="keyword">void</span> <span class="identifier">assign_inverse</span><span class="special">(</span><span class="identifier">Geometry</span> <span class="special">&</span> <span class="identifier">geometry</span><span class="special">)</span></pre>
<p>
</p>
<h6>
<a name="geometry.reference.algorithms.assign.assign_inverse.h2"></a>
<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>
</h6>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Type
</p>
</th>
<th>
<p>
Concept
</p>
</th>
<th>
<p>
Name
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody><tr>
<td>
<p>
Geometry &
</p>
</td>
<td>
<p>
Any type fulfilling a Geometry Concept
</p>
</td>
<td>
<p>
geometry
</p>
</td>
<td>
<p>
A model of the specified concept
</p>
</td>
</tr></tbody>
</table></div>
<h6>
<a name="geometry.reference.algorithms.assign.assign_inverse.h3"></a>
<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>
</h6>
<p>
Either
</p>
<p>
<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>
</p>
<p>
Or
</p>
<p>
<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">assign</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span></code>
</p>
<h6>
<a name="geometry.reference.algorithms.assign.assign_inverse.h4"></a>
<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>
</h6>
<p>
Usage of assign_inverse and expand to conveniently determine bounding
3D box of two points
</p>
<p>
</p>
<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">iostream</span><span class="special">></span>
<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>
<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>
<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</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span>
<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>
<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span>
<span class="special">{</span>
<span class="keyword">typedef</span> <span class="identifier">model</span><span class="special">::</span><span class="identifier">point</span><span class="special"><</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">></span> <span class="identifier">point</span><span class="special">;</span>
<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>
<span class="identifier">box</span> <span class="identifier">all</span><span class="special">;</span>
<span class="identifier">assign_inverse</span><span class="special">(</span><span class="identifier">all</span><span class="special">);</span>
<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>
<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>
<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>
<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>
<span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
<span class="special">}</span>
</pre>
<p>
</p>
<p>
Output:
</p>
<pre class="programlisting">((3.40282e+038, 3.40282e+038, 3.40282e+038), (-3.40282e+038, -3.40282e+038, -3.40282e+038))
((0, 0, 0), (1, 2, 3))</pre>
<h6>
<a name="geometry.reference.algorithms.assign.assign_inverse.h5"></a>
<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
also</a>
</h6>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">
<a class="link" href="../make/make_inverse.html" title="make_inverse">make_inverse</a>
</li></ul></div>
</div>
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<td align="right"><div class="copyright-footer">Copyright © 2009-2015 Barend Gehrels, Bruno Lalande,
Mateusz Loskot, Adam Wulkiewicz, Oracle and/or its affiliates<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying
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>)
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