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| <div class="section"> |
| <div class="titlepage"><div><div><h5 class="title"> |
| <a name="geometry.reference.access.get.get_2_with_index"></a><a class="link" href="get_2_with_index.html" title="get (with index)">get |
| (with index)</a> |
| </h5></div></div></div> |
| <p> |
| <a class="indexterm" name="id784646"></a> |
| get coordinate value of a Box or Segment |
| </p> |
| <a name="geometry.reference.access.get.get_2_with_index.description"></a><h6> |
| <a name="geometry.reference.access.get.get_2_with_index.description-heading"></a> |
| <a class="link" href="get_2_with_index.html#geometry.reference.access.get.get_2_with_index.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.get.get_2_with_index.synopsis"></a><h6> |
| <a name="geometry.reference.access.get.get_2_with_index.synopsis-heading"></a> |
| <a class="link" href="get_2_with_index.html#geometry.reference.access.get.get_2_with_index.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">Index</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="identifier">coordinate_type</span><span class="special"><</span><span class="identifier">Geometry</span><span class="special">>::</span><span class="identifier">type</span> <span class="identifier">get</span><span class="special">(</span><span class="identifier">Geometry</span> <span class="keyword">const</span> <span class="special">&</span> <span class="identifier">geometry</span><span class="special">)</span></pre> |
| <p> |
| </p> |
| <a name="geometry.reference.access.get.get_2_with_index.parameters"></a><h6> |
| <a name="geometry.reference.access.get.get_2_with_index.parameters-heading"></a> |
| <a class="link" href="get_2_with_index.html#geometry.reference.access.get.get_2_with_index.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> |
| Index |
| </p> |
| </td> |
| <td> |
| <p> |
| Index, this template parameter is required. For a Box: either |
| min_corner or max_corner. For a Segment: either 0 or 1 for |
| first or last point. |
| </p> |
| </td> |
| <td> |
| <p> |
| - |
| </p> |
| </td> |
| <td> |
| <p> |
| Must be specified |
| </p> |
| </td> |
| </tr> |
| <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 const & |
| </p> |
| </td> |
| <td> |
| <p> |
| Any type fulfilling a Box Concept or a Segment Concept |
| </p> |
| </td> |
| <td> |
| <p> |
| geometry |
| </p> |
| </td> |
| <td> |
| <p> |
| A model of the specified concept |
| </p> |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| <a name="geometry.reference.access.get.get_2_with_index.returns"></a><h6> |
| <a name="geometry.reference.access.get.get_2_with_index.returns-heading"></a> |
| <a class="link" href="get_2_with_index.html#geometry.reference.access.get.get_2_with_index.returns">Returns</a> |
| </h6> |
| <p> |
| coordinate value |
| </p> |
| <a name="geometry.reference.access.get.get_2_with_index.header"></a><h6> |
| <a name="geometry.reference.access.get.get_2_with_index.header-heading"></a> |
| <a class="link" href="get_2_with_index.html#geometry.reference.access.get.get_2_with_index.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> |
| <a name="geometry.reference.access.get.get_2_with_index.behavior"></a><h6> |
| <a name="geometry.reference.access.get.get_2_with_index.behavior-heading"></a> |
| <a class="link" href="get_2_with_index.html#geometry.reference.access.get.get_2_with_index.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> |
| Rectangle |
| </p> |
| </td> |
| <td> |
| <p> |
| Returns the coordinate of a box (use min_corner, max_corner |
| to specify which of the points to get) |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| Segment |
| </p> |
| </td> |
| <td> |
| <p> |
| Returns the coordinate of a segment (use 0, 1 to specify which |
| of the two points to get) |
| </p> |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| <a name="geometry.reference.access.get.get_2_with_index.complexity"></a><h6> |
| <a name="geometry.reference.access.get.get_2_with_index.complexity-heading"></a> |
| <a class="link" href="get_2_with_index.html#geometry.reference.access.get.get_2_with_index.complexity">Complexity</a> |
| </h6> |
| <p> |
| Constant |
| </p> |
| <a name="geometry.reference.access.get.get_2_with_index.example"></a><h6> |
| <a name="geometry.reference.access.get.get_2_with_index.example-heading"></a> |
| <a class="link" href="get_2_with_index.html#geometry.reference.access.get.get_2_with_index.example">Example</a> |
| </h6> |
| <p> |
| Get the coordinate of a box |
| </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">box</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="special">></span> <span class="identifier">box</span><span class="special">;</span> |
| |
| <span class="identifier">bg</span><span class="special">::</span><span class="identifier">assign_values</span><span class="special">(</span><span class="identifier">box</span><span class="special">,</span> <span class="number">1</span><span class="special">,</span> <span class="number">3</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="string">"Box:"</span> |
| <span class="special"><<</span> <span class="string">" "</span> <span class="special"><<</span> <span class="identifier">bg</span><span class="special">::</span><span class="identifier">get</span><span class="special"><</span><span class="identifier">bg</span><span class="special">::</span><span class="identifier">min_corner</span><span class="special">,</span> <span class="number">0</span><span class="special">>(</span><span class="identifier">box</span><span class="special">)</span> |
| <span class="special"><<</span> <span class="string">" "</span> <span class="special"><<</span> <span class="identifier">bg</span><span class="special">::</span><span class="identifier">get</span><span class="special"><</span><span class="identifier">bg</span><span class="special">::</span><span class="identifier">min_corner</span><span class="special">,</span> <span class="number">1</span><span class="special">>(</span><span class="identifier">box</span><span class="special">)</span> |
| <span class="special"><<</span> <span class="string">" "</span> <span class="special"><<</span> <span class="identifier">bg</span><span class="special">::</span><span class="identifier">get</span><span class="special"><</span><span class="identifier">bg</span><span class="special">::</span><span class="identifier">max_corner</span><span class="special">,</span> <span class="number">0</span><span class="special">>(</span><span class="identifier">box</span><span class="special">)</span> |
| <span class="special"><<</span> <span class="string">" "</span> <span class="special"><<</span> <span class="identifier">bg</span><span class="special">::</span><span class="identifier">get</span><span class="special"><</span><span class="identifier">bg</span><span class="special">::</span><span class="identifier">max_corner</span><span class="special">,</span> <span class="number">1</span><span class="special">>(</span><span class="identifier">box</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">Box: 1 3 5 6 |
| </pre> |
| </div> |
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| <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>) |
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