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| <div class="section"> |
| <div class="titlepage"><div><div><h5 class="title"> |
| <a name="geometry.reference.access.set.set_3"></a><a class="link" href="set_3.html" title="set">set</a> |
| </h5></div></div></div> |
| <p> |
| <a class="indexterm" name="id786920"></a> |
| Set coordinate value of a geometry (usually a point) |
| </p> |
| <a name="geometry.reference.access.set.set_3.description"></a><h6> |
| <a name="geometry.reference.access.set.set_3.description-heading"></a> |
| <a class="link" href="set_3.html#geometry.reference.access.set.set_3.description">Description</a> |
| </h6> |
| <p> |
| The free functions <span class="bold"><strong>get</strong></span> and <span class="bold"><strong>set</strong></span> are two of the most important functions of |
| Boost.Geometry, both within the library, as also for the library user. |
| With these two functions you normally get and set coordinate values from |
| and for a point, box, segment or sphere. |
| </p> |
| <a name="geometry.reference.access.set.set_3.synopsis"></a><h6> |
| <a name="geometry.reference.access.set.set_3.synopsis-heading"></a> |
| <a class="link" href="set_3.html#geometry.reference.access.set.set_3.synopsis">Synopsis</a> |
| </h6> |
| <p> |
| |
| </p> |
| <pre class="programlisting"><span class="keyword">template</span><span class="special"><</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <span class="identifier">Dimension</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">set</span><span class="special">(</span><span class="identifier">Geometry</span> <span class="special">&</span> <span class="identifier">geometry</span><span class="special">,</span> <span class="keyword">typename</span> <span class="identifier">coordinate_type</span><span class="special"><</span> <span class="identifier">Geometry</span> <span class="special">>::</span><span class="identifier">type</span> <span class="keyword">const</span> <span class="special">&</span> <span class="identifier">value</span><span class="special">)</span></pre> |
| <p> |
| </p> |
| <a name="geometry.reference.access.set.set_3.parameters"></a><h6> |
| <a name="geometry.reference.access.set.set_3.parameters-heading"></a> |
| <a class="link" href="set_3.html#geometry.reference.access.set.set_3.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> |
| Dimension |
| </p> |
| </td> |
| <td> |
| <p> |
| Dimension, this template parameter is required. Should contain |
| [0 .. n-1] for an n-dimensional geometry |
| </p> |
| </td> |
| <td> |
| <p> |
| - |
| </p> |
| </td> |
| <td> |
| <p> |
| Must be specified |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| Geometry & |
| </p> |
| </td> |
| <td> |
| <p> |
| Any type fulfilling a Geometry Concept (usually a Point Concept) |
| </p> |
| </td> |
| <td> |
| <p> |
| geometry |
| </p> |
| </td> |
| <td> |
| <p> |
| A model of the specified concept (usually a point) |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| typename coordinate_type< Geometry >::type const & |
| </p> |
| </td> |
| <td> |
| </td> |
| <td> |
| <p> |
| value |
| </p> |
| </td> |
| <td> |
| <p> |
| The coordinate value to set |
| </p> |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| <a name="geometry.reference.access.set.set_3.header"></a><h6> |
| <a name="geometry.reference.access.set.set_3.header-heading"></a> |
| <a class="link" href="set_3.html#geometry.reference.access.set.set_3.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">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">core</span><span class="special">/</span><span class="identifier">access</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span></code> |
| </p> |
| <div class="note"><table border="0" summary="Note"> |
| <tr> |
| <td rowspan="2" align="center" valign="top" width="25"><img alt="[Note]" src="../../../../../../../../doc/src/images/note.png"></td> |
| <th align="left">Note</th> |
| </tr> |
| <tr><td align="left" valign="top"><p> |
| If you host both the std:: library namespace and boost::geometry:: |
| namespace set might become ambiguous, std::set is a collection. So |
| don't do that or refer to geometry::set then explicitly. |
| </p></td></tr> |
| </table></div> |
| <a name="geometry.reference.access.set.set_3.behavior"></a><h6> |
| <a name="geometry.reference.access.set.set_3.behavior-heading"></a> |
| <a class="link" href="set_3.html#geometry.reference.access.set.set_3.behavior">Behavior</a> |
| </h6> |
| <div class="informaltable"><table class="table"> |
| <colgroup> |
| <col> |
| <col> |
| </colgroup> |
| <thead><tr> |
| <th> |
| <p> |
| Case |
| </p> |
| </th> |
| <th> |
| <p> |
| Behavior |
| </p> |
| </th> |
| </tr></thead> |
| <tbody> |
| <tr> |
| <td> |
| <p> |
| Point |
| </p> |
| </td> |
| <td> |
| <p> |
| Sets the coordinate of a point |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| Circle or Sphere |
| </p> |
| </td> |
| <td> |
| <p> |
| Sets the coordinate of the center of a circle or sphere (currently |
| in an extension) |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| Spherical |
| </p> |
| </td> |
| <td> |
| <p> |
| Sets the coordinate of a point, in either Radian's or Degree's, |
| depending on specified units |
| </p> |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| <a name="geometry.reference.access.set.set_3.complexity"></a><h6> |
| <a name="geometry.reference.access.set.set_3.complexity-heading"></a> |
| <a class="link" href="set_3.html#geometry.reference.access.set.set_3.complexity">Complexity</a> |
| </h6> |
| <p> |
| Constant |
| </p> |
| <a name="geometry.reference.access.set.set_3.example"></a><h6> |
| <a name="geometry.reference.access.set.set_3.example-heading"></a> |
| <a class="link" href="set_3.html#geometry.reference.access.set.set_3.example">Example</a> |
| </h6> |
| <p> |
| Set the coordinate of a point |
| </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">point_xy</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> |
| |
| <span class="keyword">namespace</span> <span class="identifier">bg</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="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> |
| <span class="special">{</span> |
| <span class="identifier">bg</span><span class="special">::</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="identifier">bg</span><span class="special">::</span><span class="identifier">set</span><span class="special"><</span><span class="number">0</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="identifier">bg</span><span class="special">::</span><span class="identifier">set</span><span class="special"><</span><span class="number">1</span><span class="special">>(</span><span class="identifier">point</span><span class="special">,</span> <span class="number">2</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="string">"Location: "</span> <span class="special"><<</span> <span class="identifier">bg</span><span class="special">::</span><span class="identifier">dsv</span><span class="special">(</span><span class="identifier">point</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">Location: (1, 2) |
| </pre> |
| </div> |
| <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> |
| <td align="left"></td> |
| <td align="right"><div class="copyright-footer">Copyright © 2011 Barend Gehrels, Bruno Lalande, Mateusz Loskot<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>) |
| </p> |
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