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<title>Boost.Polygon's polygon_with_holes_data</title>
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<div class="titlepage"><div><div><h5 class="title">
<a name="geometry.reference.adapted.boost_polygon.polygon_with_holes_data"></a><a class="link" href="polygon_with_holes_data.html" title="Boost.Polygon's polygon_with_holes_data">Boost.Polygon's
polygon_with_holes_data</a>
</h5></div></div></div>
<p>
Boost.Polygon's polygon type supporting holes (boost::polygon::polygon_with_holes_data)
is adapted to the Boost.Geometry Polygon Concept.
</p>
<h6>
<a name="geometry.reference.adapted.boost_polygon.polygon_with_holes_data.h0"></a>
<span class="phrase"><a name="geometry.reference.adapted.boost_polygon.polygon_with_holes_data.description"></a></span><a class="link" href="polygon_with_holes_data.html#geometry.reference.adapted.boost_polygon.polygon_with_holes_data.description">Description</a>
</h6>
<p>
Boost.Polygon's points (as well as polygons) can be used by Boost.Geometry.
The two libraries can therefore be used together. Using a boost::polygon::polygon_with_holes_data<...>,
algorithms from both Boost.Polygon and Boost.Geometry can be called.
</p>
<h6>
<a name="geometry.reference.adapted.boost_polygon.polygon_with_holes_data.h1"></a>
<span class="phrase"><a name="geometry.reference.adapted.boost_polygon.polygon_with_holes_data.model_of"></a></span><a class="link" href="polygon_with_holes_data.html#geometry.reference.adapted.boost_polygon.polygon_with_holes_data.model_of">Model
of</a>
</h6>
<p>
<a class="link" href="../../concepts/concept_polygon.html" title="Polygon Concept">Polygon Concept</a>
</p>
<h6>
<a name="geometry.reference.adapted.boost_polygon.polygon_with_holes_data.h2"></a>
<span class="phrase"><a name="geometry.reference.adapted.boost_polygon.polygon_with_holes_data.header"></a></span><a class="link" href="polygon_with_holes_data.html#geometry.reference.adapted.boost_polygon.polygon_with_holes_data.header">Header</a>
</h6>
<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">geometries</span><span class="special">/</span><span class="identifier">adapted</span><span class="special">/</span><span class="identifier">boost_polygon</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span></code>
</p>
<p>
The standard header <code class="computeroutput"><span class="identifier">boost</span><span class="special">/</span><span class="identifier">geometry</span><span class="special">.</span><span class="identifier">hpp</span></code>
does not include this header.
</p>
<h6>
<a name="geometry.reference.adapted.boost_polygon.polygon_with_holes_data.h3"></a>
<span class="phrase"><a name="geometry.reference.adapted.boost_polygon.polygon_with_holes_data.example"></a></span><a class="link" href="polygon_with_holes_data.html#geometry.reference.adapted.boost_polygon.polygon_with_holes_data.example">Example</a>
</h6>
<p>
Shows how to use Boost.Polygon polygon_with_holes_data within Boost.Geometry
</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">adapted</span><span class="special">/</span><span class="identifier">boost_polygon</span><span class="special">.</span><span class="identifier">hpp</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">boost</span><span class="special">::</span><span class="identifier">polygon</span><span class="special">::</span><span class="identifier">polygon_with_holes_data</span><span class="special"><</span><span class="keyword">int</span><span class="special">></span> <span class="identifier">polygon</span><span class="special">;</span>
<span class="keyword">typedef</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">polygon</span><span class="special">::</span><span class="identifier">polygon_traits</span><span class="special"><</span><span class="identifier">polygon</span><span class="special">>::</span><span class="identifier">point_type</span> <span class="identifier">point</span><span class="special">;</span>
<span class="keyword">typedef</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">polygon</span><span class="special">::</span><span class="identifier">polygon_with_holes_traits</span><span class="special"><</span><span class="identifier">polygon</span><span class="special">>::</span><span class="identifier">hole_type</span> <span class="identifier">hole</span><span class="special">;</span>
<span class="identifier">point</span> <span class="identifier">pts</span><span class="special">[</span><span class="number">5</span><span class="special">]</span> <span class="special">=</span> <span class="special">{</span>
<span class="identifier">boost</span><span class="special">::</span><span class="identifier">polygon</span><span class="special">::</span><span class="identifier">construct</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="identifier">boost</span><span class="special">::</span><span class="identifier">polygon</span><span class="special">::</span><span class="identifier">construct</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">10</span><span class="special">),</span>
<span class="identifier">boost</span><span class="special">::</span><span class="identifier">polygon</span><span class="special">::</span><span class="identifier">construct</span><span class="special"><</span><span class="identifier">point</span><span class="special">>(</span><span class="number">10</span><span class="special">,</span> <span class="number">10</span><span class="special">),</span>
<span class="identifier">boost</span><span class="special">::</span><span class="identifier">polygon</span><span class="special">::</span><span class="identifier">construct</span><span class="special"><</span><span class="identifier">point</span><span class="special">>(</span><span class="number">10</span><span class="special">,</span> <span class="number">0</span><span class="special">),</span>
<span class="identifier">boost</span><span class="special">::</span><span class="identifier">polygon</span><span class="special">::</span><span class="identifier">construct</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="special">};</span>
<span class="identifier">point</span> <span class="identifier">hole_pts</span><span class="special">[</span><span class="number">5</span><span class="special">]</span> <span class="special">=</span> <span class="special">{</span>
<span class="identifier">boost</span><span class="special">::</span><span class="identifier">polygon</span><span class="special">::</span><span class="identifier">construct</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">1</span><span class="special">),</span>
<span class="identifier">boost</span><span class="special">::</span><span class="identifier">polygon</span><span class="special">::</span><span class="identifier">construct</span><span class="special"><</span><span class="identifier">point</span><span class="special">>(</span><span class="number">9</span><span class="special">,</span> <span class="number">1</span><span class="special">),</span>
<span class="identifier">boost</span><span class="special">::</span><span class="identifier">polygon</span><span class="special">::</span><span class="identifier">construct</span><span class="special"><</span><span class="identifier">point</span><span class="special">>(</span><span class="number">9</span><span class="special">,</span> <span class="number">9</span><span class="special">),</span>
<span class="identifier">boost</span><span class="special">::</span><span class="identifier">polygon</span><span class="special">::</span><span class="identifier">construct</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">9</span><span class="special">),</span>
<span class="identifier">boost</span><span class="special">::</span><span class="identifier">polygon</span><span class="special">::</span><span class="identifier">construct</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">1</span><span class="special">)</span>
<span class="special">};</span>
<span class="identifier">hole</span> <span class="identifier">hls</span><span class="special">[</span><span class="number">1</span><span class="special">];</span>
<span class="identifier">boost</span><span class="special">::</span><span class="identifier">polygon</span><span class="special">::</span><span class="identifier">set_points</span><span class="special">(</span><span class="identifier">hls</span><span class="special">[</span><span class="number">0</span><span class="special">],</span> <span class="identifier">hole_pts</span><span class="special">,</span> <span class="identifier">hole_pts</span><span class="special">+</span><span class="number">5</span><span class="special">);</span>
<span class="identifier">polygon</span> <span class="identifier">poly</span><span class="special">;</span>
<span class="identifier">boost</span><span class="special">::</span><span class="identifier">polygon</span><span class="special">::</span><span class="identifier">set_points</span><span class="special">(</span><span class="identifier">poly</span><span class="special">,</span> <span class="identifier">pts</span><span class="special">,</span> <span class="identifier">pts</span><span class="special">+</span><span class="number">5</span><span class="special">);</span>
<span class="identifier">boost</span><span class="special">::</span><span class="identifier">polygon</span><span class="special">::</span><span class="identifier">set_holes</span><span class="special">(</span><span class="identifier">poly</span><span class="special">,</span> <span class="identifier">hls</span><span class="special">,</span> <span class="identifier">hls</span><span class="special">+</span><span class="number">1</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">"Area (using Boost.Geometry): "</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">area</span><span class="special">(</span><span class="identifier">poly</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">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"Area (using Boost.Polygon): "</span>
<span class="special"><<</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">polygon</span><span class="special">::</span><span class="identifier">area</span><span class="special">(</span><span class="identifier">poly</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">Area (using Boost.Geometry): 36
Area (using Boost.Polygon): 36
</pre>
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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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