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| <div class="titlepage"><div><div><h5 class="title"> |
| <a name="geometry.reference.algorithms.make.make_inverse"></a><a class="link" href="make_inverse.html" title="make_inverse">make_inverse</a> |
| </h5></div></div></div> |
| <p> |
| <a class="indexterm" name="idp116266976"></a> |
| Construct a box with inverse infinite coordinates. |
| </p> |
| <h6> |
| <a name="geometry.reference.algorithms.make.make_inverse.h0"></a> |
| <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> |
| </h6> |
| <p> |
| The make_inverse function initializes a 2D or 3D box with large coordinates, |
| the min corner is very large, the max corner is very small. This is useful |
| e.g. in combination with the expand function, to determine the bounding |
| box of a series of geometries. |
| </p> |
| <h6> |
| <a name="geometry.reference.algorithms.make.make_inverse.h1"></a> |
| <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> |
| </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="identifier">Geometry</span> <span class="identifier">make_inverse</span><span class="special">()</span></pre> |
| <p> |
| </p> |
| <h6> |
| <a name="geometry.reference.algorithms.make.make_inverse.h2"></a> |
| <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> |
| </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> |
| - |
| </p> |
| </td> |
| <td> |
| <p> |
| Must be specified |
| </p> |
| </td> |
| </tr></tbody> |
| </table></div> |
| <h6> |
| <a name="geometry.reference.algorithms.make.make_inverse.h3"></a> |
| <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> |
| </h6> |
| <p> |
| The constructed geometry, here: a box |
| </p> |
| <h6> |
| <a name="geometry.reference.algorithms.make.make_inverse.h4"></a> |
| <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> |
| </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">make</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span></code> |
| </p> |
| <h6> |
| <a name="geometry.reference.algorithms.make.make_inverse.h5"></a> |
| <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> |
| </h6> |
| <p> |
| Usage of make_inverse and expand to conveniently determine bounding box |
| of several objects |
| </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_xy</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">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> |
| <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">make_inverse</span><span class="special"><</span><span class="identifier">box</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">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> |
| <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> |
| <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">((1.79769e+308, 1.79769e+308), (-1.79769e+308, -1.79769e+308)) |
| ((0, 0), (5, 6)) |
| </pre> |
| <h6> |
| <a name="geometry.reference.algorithms.make.make_inverse.h6"></a> |
| <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 |
| also</a> |
| </h6> |
| <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem"> |
| <a class="link" href="../assign/assign_inverse.html" title="assign_inverse">assign_inverse</a> |
| </li></ul></div> |
| </div> |
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| <td align="left"></td> |
| <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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