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<li class="navelem"><a class="el" href="namespacegeos.html">geos</a></li><li class="navelem"><a class="el" href="namespacegeos_1_1operation.html">operation</a></li><li class="navelem"><a class="el" href="namespacegeos_1_1operation_1_1geounion.html">geounion</a></li><li class="navelem"><a class="el" href="classgeos_1_1operation_1_1geounion_1_1ClassicUnionStrategy.html">ClassicUnionStrategy</a></li> </ul>
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<p>Implementation of <a class="el" href="classgeos_1_1operation_1_1geounion_1_1UnionStrategy.html">UnionStrategy</a> that provides overlay using the first generation overlay routines.
<a href="classgeos_1_1operation_1_1geounion_1_1ClassicUnionStrategy.html#details">More...</a></p>
<p><code>#include &lt;<a class="el" href="CascadedPolygonUnion_8h_source.html">CascadedPolygonUnion.h</a>&gt;</code></p>
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Inheritance diagram for geos::operation::geounion::ClassicUnionStrategy:</div>
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Public Member Functions</h2></td></tr>
<tr class="memitem:a9e667a04fadd696252e22c02bec9611e"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1geounion_1_1ClassicUnionStrategy.html#a9e667a04fadd696252e22c02bec9611e">ClassicUnionStrategy</a> ()</td></tr>
<tr class="separator:a9e667a04fadd696252e22c02bec9611e"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a4d8e8854e24bcd8c5b1fc4314ba7d9a9"><td class="memItemLeft" align="right" valign="top">std::unique_ptr&lt; <a class="el" href="classgeos_1_1geom_1_1Geometry.html">geom::Geometry</a> &gt;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1geounion_1_1ClassicUnionStrategy.html#a4d8e8854e24bcd8c5b1fc4314ba7d9a9">Union</a> (const <a class="el" href="classgeos_1_1geom_1_1Geometry.html">geom::Geometry</a> *, const <a class="el" href="classgeos_1_1geom_1_1Geometry.html">geom::Geometry</a> *) override</td></tr>
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<tr class="memitem:a07f71016f25be506ea16a2d1c18417ed"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1geounion_1_1ClassicUnionStrategy.html#a07f71016f25be506ea16a2d1c18417ed">isFloatingPrecision</a> () const override</td></tr>
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<tr class="inherit_header pub_methods_classgeos_1_1operation_1_1geounion_1_1UnionStrategy"><td colspan="2" onclick="javascript:toggleInherit('pub_methods_classgeos_1_1operation_1_1geounion_1_1UnionStrategy')"><img src="closed.png" alt="-"/>&#160;Public Member Functions inherited from <a class="el" href="classgeos_1_1operation_1_1geounion_1_1UnionStrategy.html">geos::operation::geounion::UnionStrategy</a></td></tr>
<tr class="memitem:a914784155655f6e17f3876b4b1462749 inherit pub_methods_classgeos_1_1operation_1_1geounion_1_1UnionStrategy"><td class="memItemLeft" align="right" valign="top">virtual&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1geounion_1_1UnionStrategy.html#a914784155655f6e17f3876b4b1462749">~UnionStrategy</a> ()</td></tr>
<tr class="separator:a914784155655f6e17f3876b4b1462749 inherit pub_methods_classgeos_1_1operation_1_1geounion_1_1UnionStrategy"><td class="memSeparator" colspan="2">&#160;</td></tr>
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<tr class="memitem:aa810df4e56568ef68b30fa3c50f42c53"><td class="memItemLeft" align="right" valign="top">std::unique_ptr&lt; <a class="el" href="classgeos_1_1geom_1_1Geometry.html">geom::Geometry</a> &gt;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1geounion_1_1ClassicUnionStrategy.html#aa810df4e56568ef68b30fa3c50f42c53">unionPolygonsByBuffer</a> (const <a class="el" href="classgeos_1_1geom_1_1Geometry.html">geom::Geometry</a> *g0, const <a class="el" href="classgeos_1_1geom_1_1Geometry.html">geom::Geometry</a> *g1)</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Implementation of <a class="el" href="classgeos_1_1operation_1_1geounion_1_1UnionStrategy.html">UnionStrategy</a> that provides overlay using the first generation overlay routines. </p>
<p>Definition at line <a class="el" href="CascadedPolygonUnion_8h_source.html#l00059">59</a> of file <a class="el" href="CascadedPolygonUnion_8h_source.html">CascadedPolygonUnion.h</a>.</p>
</div><h2 class="groupheader">Constructor &amp; Destructor Documentation</h2>
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<td class="memname">geos::operation::geounion::ClassicUnionStrategy::ClassicUnionStrategy </td>
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<p>Definition at line <a class="el" href="CascadedPolygonUnion_8h_source.html#l00063">63</a> of file <a class="el" href="CascadedPolygonUnion_8h_source.html">CascadedPolygonUnion.h</a>.</p>
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<td class="memname">bool geos::operation::geounion::ClassicUnionStrategy::isFloatingPrecision </td>
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<p>Indicates whether the union function operates using a floating (full) precision model. If this is the case, then the unary union code can make use of the <a class="el" href="classgeos_1_1operation_1_1geounion_1_1OverlapUnion.html">OverlapUnion</a> performance optimization, and perhaps other optimizations as well. Otherwise, the union result extent may not be the same as the extent of the inputs, which prevents using some optimizations. </p>
<p>Implements <a class="el" href="classgeos_1_1operation_1_1geounion_1_1UnionStrategy.html#a11928f5cdce1951d3ad532037bf5b025">geos::operation::geounion::UnionStrategy</a>.</p>
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<td class="memname">std::unique_ptr&lt;<a class="el" href="classgeos_1_1geom_1_1Geometry.html">geom::Geometry</a>&gt; geos::operation::geounion::ClassicUnionStrategy::Union </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classgeos_1_1geom_1_1Geometry.html">geom::Geometry</a> *&#160;</td>
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<p>Computes the union of two geometries. This method may throw a <a class="el" href="classgeos_1_1util_1_1TopologyException.html">util::TopologyException</a> if one is encountered </p>
<p>Implements <a class="el" href="classgeos_1_1operation_1_1geounion_1_1UnionStrategy.html#ac0f964ba7325b850851584b857279b87">geos::operation::geounion::UnionStrategy</a>.</p>
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<td class="memname">std::unique_ptr&lt;<a class="el" href="classgeos_1_1geom_1_1Geometry.html">geom::Geometry</a>&gt; geos::operation::geounion::ClassicUnionStrategy::unionPolygonsByBuffer </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classgeos_1_1geom_1_1Geometry.html">geom::Geometry</a> *&#160;</td>
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<td class="paramname"><em>g1</em>&#160;</td>
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<p>An alternative way of unioning polygonal geometries by using <code>bufer(0)</code>. Only worth using if regular overlay union fails. </p>
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<hr/>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="CascadedPolygonUnion_8h_source.html">CascadedPolygonUnion.h</a></li>
</ul>
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