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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_1UnaryUnionOp.html">UnaryUnionOp</a></li> </ul>
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<a href="#pub-methods">Public Member Functions</a> |
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<a href="classgeos_1_1operation_1_1geounion_1_1UnaryUnionOp-members.html">List of all members</a> </div>
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<div class="title">geos::operation::geounion::UnaryUnionOp Class Reference</div> </div>
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<p>Unions a collection of Geometry or a single Geometry (which may be a collection) together.
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<a href="classgeos_1_1operation_1_1geounion_1_1UnaryUnionOp.html#details">More...</a></p>
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<p><code>#include <<a class="el" href="UnaryUnionOp_8h_source.html">UnaryUnionOp.h</a>></code></p>
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Collaboration diagram for geos::operation::geounion::UnaryUnionOp:</div>
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<table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
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Public Member Functions</h2></td></tr>
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<tr class="memitem:a1652982c893d508445d26ce3d33fbb85"><td class="memTemplParams" colspan="2">template<class T > </td></tr>
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<tr class="memitem:a1652982c893d508445d26ce3d33fbb85"><td class="memTemplItemLeft" align="right" valign="top"> </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1geounion_1_1UnaryUnionOp.html#a1652982c893d508445d26ce3d33fbb85">UnaryUnionOp</a> (const T &geoms, <a class="el" href="classgeos_1_1geom_1_1GeometryFactory.html">geom::GeometryFactory</a> &geomFactIn)</td></tr>
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<tr class="memitem:a1ea8082274675ec2796a8bb3e74da88e"><td class="memTemplParams" colspan="2">template<class T > </td></tr>
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<tr class="memitem:a1ea8082274675ec2796a8bb3e74da88e"><td class="memTemplItemLeft" align="right" valign="top"> </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1geounion_1_1UnaryUnionOp.html#a1ea8082274675ec2796a8bb3e74da88e">UnaryUnionOp</a> (const T &geoms)</td></tr>
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<tr class="separator:a1ea8082274675ec2796a8bb3e74da88e"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ad3ef6dc45747643f2e0643177312b6c6"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1geounion_1_1UnaryUnionOp.html#ad3ef6dc45747643f2e0643177312b6c6">UnaryUnionOp</a> (const <a class="el" href="classgeos_1_1geom_1_1Geometry.html">geom::Geometry</a> &geom)</td></tr>
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<tr class="separator:ad3ef6dc45747643f2e0643177312b6c6"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ac448013e376f4b851ac4a959c0d10973"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1geounion_1_1UnaryUnionOp.html#ac448013e376f4b851ac4a959c0d10973">setUnionFunction</a> (<a class="el" href="classgeos_1_1operation_1_1geounion_1_1UnionStrategy.html">UnionStrategy</a> *unionFun)</td></tr>
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<tr class="separator:ac448013e376f4b851ac4a959c0d10973"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a42429db59597579403433f8129ef711c"><td class="memItemLeft" align="right" valign="top">std::unique_ptr< <a class="el" href="classgeos_1_1geom_1_1Geometry.html">geom::Geometry</a> > </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1geounion_1_1UnaryUnionOp.html#a42429db59597579403433f8129ef711c">Union</a> ()</td></tr>
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<tr class="memdesc:a42429db59597579403433f8129ef711c"><td class="mdescLeft"> </td><td class="mdescRight">Gets the union of the input geometries. <a href="#a42429db59597579403433f8129ef711c">More...</a><br /></td></tr>
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</table><table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-static-methods"></a>
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Static Public Member Functions</h2></td></tr>
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<tr class="memitem:a3aae780e6b8b3a2b74f054a5a9a1a41f"><td class="memTemplParams" colspan="2">template<typename T > </td></tr>
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<tr class="memitem:a3aae780e6b8b3a2b74f054a5a9a1a41f"><td class="memTemplItemLeft" align="right" valign="top">static std::unique_ptr< <a class="el" href="classgeos_1_1geom_1_1Geometry.html">geom::Geometry</a> > </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1geounion_1_1UnaryUnionOp.html#a3aae780e6b8b3a2b74f054a5a9a1a41f">Union</a> (const T &geoms)</td></tr>
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<tr class="memitem:a32f2998d3e724fc306c6071c71d55f09"><td class="memTemplParams" colspan="2">template<class T > </td></tr>
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<tr class="memitem:a32f2998d3e724fc306c6071c71d55f09"><td class="memTemplItemLeft" align="right" valign="top">static std::unique_ptr< <a class="el" href="classgeos_1_1geom_1_1Geometry.html">geom::Geometry</a> > </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1geounion_1_1UnaryUnionOp.html#a32f2998d3e724fc306c6071c71d55f09">Union</a> (const T &geoms, <a class="el" href="classgeos_1_1geom_1_1GeometryFactory.html">geom::GeometryFactory</a> &<a class="el" href="classgeos_1_1operation_1_1geounion_1_1UnaryUnionOp.html#adb5463aee922e00c1d71756251a6bd2d">geomFact</a>)</td></tr>
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<tr class="separator:a32f2998d3e724fc306c6071c71d55f09"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a33ee2554140a204574cd276b080a4852"><td class="memItemLeft" align="right" valign="top">static std::unique_ptr< <a class="el" href="classgeos_1_1geom_1_1Geometry.html">geom::Geometry</a> > </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1geounion_1_1UnaryUnionOp.html#a33ee2554140a204574cd276b080a4852">Union</a> (const <a class="el" href="classgeos_1_1geom_1_1Geometry.html">geom::Geometry</a> &geom)</td></tr>
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</table><table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pri-methods"></a>
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Private Member Functions</h2></td></tr>
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<tr class="memitem:a57264649b278511171ae70550d0f5e24"><td class="memTemplParams" colspan="2">template<typename T > </td></tr>
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<tr class="memitem:a57264649b278511171ae70550d0f5e24"><td class="memTemplItemLeft" align="right" valign="top">void </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1geounion_1_1UnaryUnionOp.html#a57264649b278511171ae70550d0f5e24">extractGeoms</a> (const T &geoms)</td></tr>
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<tr class="memitem:a09d360b5400925975efa3f3397198d22"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1geounion_1_1UnaryUnionOp.html#a09d360b5400925975efa3f3397198d22">extract</a> (const <a class="el" href="classgeos_1_1geom_1_1Geometry.html">geom::Geometry</a> &geom)</td></tr>
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<tr class="memitem:a0fae90c122df78fcdcf94bf688f8d128"><td class="memItemLeft" align="right" valign="top">std::unique_ptr< <a class="el" href="classgeos_1_1geom_1_1Geometry.html">geom::Geometry</a> > </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1geounion_1_1UnaryUnionOp.html#a0fae90c122df78fcdcf94bf688f8d128">unionNoOpt</a> (const <a class="el" href="classgeos_1_1geom_1_1Geometry.html">geom::Geometry</a> &g0)</td></tr>
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<tr class="separator:a0fae90c122df78fcdcf94bf688f8d128"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ad1b4596fcc49d87ead9534e6445263d7"><td class="memItemLeft" align="right" valign="top">std::unique_ptr< <a class="el" href="classgeos_1_1geom_1_1Geometry.html">geom::Geometry</a> > </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1geounion_1_1UnaryUnionOp.html#ad1b4596fcc49d87ead9534e6445263d7">unionWithNull</a> (std::unique_ptr< <a class="el" href="classgeos_1_1geom_1_1Geometry.html">geom::Geometry</a> > g0, std::unique_ptr< <a class="el" href="classgeos_1_1geom_1_1Geometry.html">geom::Geometry</a> > g1)</td></tr>
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<tr class="separator:ad1b4596fcc49d87ead9534e6445263d7"><td class="memSeparator" colspan="2"> </td></tr>
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</table><table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pri-attribs"></a>
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Private Attributes</h2></td></tr>
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<tr class="memitem:a6d800b1f5ba46f6cc5f379ee6e1c7ff5"><td class="memItemLeft" align="right" valign="top">std::vector< const <a class="el" href="classgeos_1_1geom_1_1Polygon.html">geom::Polygon</a> * > </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1geounion_1_1UnaryUnionOp.html#a6d800b1f5ba46f6cc5f379ee6e1c7ff5">polygons</a></td></tr>
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<tr class="separator:a6d800b1f5ba46f6cc5f379ee6e1c7ff5"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a4a58d4badf8b8fc2ef96a6e9c75cca5b"><td class="memItemLeft" align="right" valign="top">std::vector< const <a class="el" href="classgeos_1_1geom_1_1LineString.html">geom::LineString</a> * > </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1geounion_1_1UnaryUnionOp.html#a4a58d4badf8b8fc2ef96a6e9c75cca5b">lines</a></td></tr>
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<tr class="separator:a4a58d4badf8b8fc2ef96a6e9c75cca5b"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:add3e333be41c9b23869ab2894f710611"><td class="memItemLeft" align="right" valign="top">std::vector< const <a class="el" href="classgeos_1_1geom_1_1Point.html">geom::Point</a> * > </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1geounion_1_1UnaryUnionOp.html#add3e333be41c9b23869ab2894f710611">points</a></td></tr>
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<tr class="memitem:adb5463aee922e00c1d71756251a6bd2d"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="classgeos_1_1geom_1_1GeometryFactory.html">geom::GeometryFactory</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1geounion_1_1UnaryUnionOp.html#adb5463aee922e00c1d71756251a6bd2d">geomFact</a></td></tr>
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<tr class="separator:adb5463aee922e00c1d71756251a6bd2d"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a470e15b52d492935d231ede049d6ef45"><td class="memItemLeft" align="right" valign="top">std::unique_ptr< <a class="el" href="classgeos_1_1geom_1_1Geometry.html">geom::Geometry</a> > </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1geounion_1_1UnaryUnionOp.html#a470e15b52d492935d231ede049d6ef45">empty</a></td></tr>
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<tr class="memitem:a969b8211db8b3bca20b9a616b3f1bbe5"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classgeos_1_1operation_1_1geounion_1_1UnionStrategy.html">UnionStrategy</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1geounion_1_1UnaryUnionOp.html#a969b8211db8b3bca20b9a616b3f1bbe5">unionFunction</a></td></tr>
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<tr class="memitem:a0801f87d449e8812205934b2dde210d8"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classgeos_1_1operation_1_1geounion_1_1ClassicUnionStrategy.html">ClassicUnionStrategy</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1geounion_1_1UnaryUnionOp.html#a0801f87d449e8812205934b2dde210d8">defaultUnionFunction</a></td></tr>
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</table>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
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<div class="textblock"><p>Unions a collection of Geometry or a single Geometry (which may be a collection) together. </p>
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<p>By using this special-purpose operation over a collection of geometries it is possible to take advantage of various optimizations to improve performance. Heterogeneous <a class="el" href="classgeos_1_1geom_1_1GeometryCollection.html">GeometryCollections</a> are fully supported.</p>
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<p>The result obeys the following contract:</p>
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<ul>
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<li>Unioning a set of overlapping <a class="el" href="classgeos_1_1geom_1_1Polygon.html">Polygons</a> has the effect of merging the areas (i.e. the same effect as iteratively unioning all individual polygons together).</li>
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<li>Unioning a set of <a class="el" href="classgeos_1_1geom_1_1LineString.html">LineStrings</a> has the effect of <b>fully noding</b> and <b>dissolving</b> the input linework. In this context "fully noded" means that there will be a node or endpoint in the output for every endpoint or line segment crossing in the input. "Dissolved" means that any duplicate (e.g. coincident) line segments or portions of line segments will be reduced to a single line segment in the output. This is consistent with the semantics of the <a class="el" href="classgeos_1_1geom_1_1Geometry.html#ae184641cf7635f569ae341b517cc7372">Geometry::Union(Geometry* )</a> operation. If <b>merged</b> linework is required, the <a class="el" href="classgeos_1_1operation_1_1linemerge_1_1LineMerger.html">LineMerger</a> class can be used.</li>
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<li>Unioning a set of <a class="el" href="classgeos_1_1geom_1_1Point.html">Points</a> has the effect of merging all identical points (producing a set with no duplicates).</li>
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</ul>
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<p><code>UnaryUnion</code> always operates on the individual components of MultiGeometries. So it is possible to use it to "clean" invalid self-intersecting MultiPolygons (although the polygon components must all still be individually valid.) </p>
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<p>Definition at line <a class="el" href="UnaryUnionOp_8h_source.html#l00089">89</a> of file <a class="el" href="UnaryUnionOp_8h_source.html">UnaryUnionOp.h</a>.</p>
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</div><h2 class="groupheader">Constructor & Destructor Documentation</h2>
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<p>Definition at line <a class="el" href="UnaryUnionOp_8h_source.html#l00117">117</a> of file <a class="el" href="UnaryUnionOp_8h_source.html">UnaryUnionOp.h</a>.</p>
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<p>Definition at line <a class="el" href="UnaryUnionOp_8h_source.html#l00125">125</a> of file <a class="el" href="UnaryUnionOp_8h_source.html">UnaryUnionOp.h</a>.</p>
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<p>Definition at line <a class="el" href="UnaryUnionOp_8h_source.html#l00132">132</a> of file <a class="el" href="UnaryUnionOp_8h_source.html">UnaryUnionOp.h</a>.</p>
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<h2 class="groupheader">Member Function Documentation</h2>
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<p>Definition at line <a class="el" href="UnaryUnionOp_8h_source.html#l00173">173</a> of file <a class="el" href="UnaryUnionOp_8h_source.html">UnaryUnionOp.h</a>.</p>
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<td class="memname">void geos::operation::geounion::UnaryUnionOp::extractGeoms </td>
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<p>Definition at line <a class="el" href="UnaryUnionOp_8h_source.html#l00160">160</a> of file <a class="el" href="UnaryUnionOp_8h_source.html">UnaryUnionOp.h</a>.</p>
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<td class="memname">void geos::operation::geounion::UnaryUnionOp::setUnionFunction </td>
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<p>Definition at line <a class="el" href="UnaryUnionOp_8h_source.html#l00139">139</a> of file <a class="el" href="UnaryUnionOp_8h_source.html">UnaryUnionOp.h</a>.</p>
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<td class="memname">static std::unique_ptr<<a class="el" href="classgeos_1_1geom_1_1Geometry.html">geom::Geometry</a>> geos::operation::geounion::UnaryUnionOp::Union </td>
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<p>Definition at line <a class="el" href="UnaryUnionOp_8h_source.html#l00094">94</a> of file <a class="el" href="UnaryUnionOp_8h_source.html">UnaryUnionOp.h</a>.</p>
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<p>References <a class="el" href="UnaryUnionOp_8h_source.html#l00094">Union()</a>.</p>
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<p>Referenced by <a class="el" href="UnaryUnionOp_8h_source.html#l00094">Union()</a>.</p>
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<td class="memname">static std::unique_ptr<<a class="el" href="classgeos_1_1geom_1_1Geometry.html">geom::Geometry</a>> geos::operation::geounion::UnaryUnionOp::Union </td>
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<p>Definition at line <a class="el" href="UnaryUnionOp_8h_source.html#l00102">102</a> of file <a class="el" href="UnaryUnionOp_8h_source.html">UnaryUnionOp.h</a>.</p>
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<td class="memname">static std::unique_ptr<<a class="el" href="classgeos_1_1geom_1_1Geometry.html">geom::Geometry</a>> geos::operation::geounion::UnaryUnionOp::Union </td>
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<p>Definition at line <a class="el" href="UnaryUnionOp_8h_source.html#l00110">110</a> of file <a class="el" href="UnaryUnionOp_8h_source.html">UnaryUnionOp.h</a>.</p>
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<p>Gets the union of the input geometries. </p>
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<dl class="section return"><dt>Returns</dt><dd>a Geometry containing the union </dd>
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<td class="memname">std::unique_ptr<<a class="el" href="classgeos_1_1geom_1_1Geometry.html">geom::Geometry</a>> geos::operation::geounion::UnaryUnionOp::unionNoOpt </td>
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<p>Computes a unary union with no extra optimization, and no short-circuiting. Due to the way the overlay operations are implemented, this is still efficient in the case of linear and puntal geometries. Uses robust version of overlay operation to ensure identical behaviour to the <code>union(Geometry)</code> operation.</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<dl class="section return"><dt>Returns</dt><dd>the union of the input geometry </dd></dl>
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<p>Definition at line <a class="el" href="UnaryUnionOp_8h_source.html#l00199">199</a> of file <a class="el" href="UnaryUnionOp_8h_source.html">UnaryUnionOp.h</a>.</p>
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<td class="memname">std::unique_ptr<<a class="el" href="classgeos_1_1geom_1_1Geometry.html">geom::Geometry</a>> geos::operation::geounion::UnaryUnionOp::unionWithNull </td>
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<td>(</td>
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<td class="paramtype">std::unique_ptr< <a class="el" href="classgeos_1_1geom_1_1Geometry.html">geom::Geometry</a> > </td>
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<td class="paramname"><em>g0</em>, </td>
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<td class="paramname"><em>g1</em> </td>
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<p>Computes the union of two geometries, either of both of which may be null.</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">g0</td><td>a Geometry (ownership transferred) </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>the union of the input(s) </dd>
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null if both inputs are null </dd></dl>
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<h2 class="groupheader">Member Data Documentation</h2>
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<td class="memname"><a class="el" href="classgeos_1_1operation_1_1geounion_1_1ClassicUnionStrategy.html">ClassicUnionStrategy</a> geos::operation::geounion::UnaryUnionOp::defaultUnionFunction</td>
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<p>Definition at line <a class="el" href="UnaryUnionOp_8h_source.html#l00234">234</a> of file <a class="el" href="UnaryUnionOp_8h_source.html">UnaryUnionOp.h</a>.</p>
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<td class="memname">std::unique_ptr<<a class="el" href="classgeos_1_1geom_1_1Geometry.html">geom::Geometry</a>> geos::operation::geounion::UnaryUnionOp::empty</td>
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<p>Definition at line <a class="el" href="UnaryUnionOp_8h_source.html#l00231">231</a> of file <a class="el" href="UnaryUnionOp_8h_source.html">UnaryUnionOp.h</a>.</p>
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<td class="memname">const <a class="el" href="classgeos_1_1geom_1_1GeometryFactory.html">geom::GeometryFactory</a>* geos::operation::geounion::UnaryUnionOp::geomFact</td>
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<p>Definition at line <a class="el" href="UnaryUnionOp_8h_source.html#l00230">230</a> of file <a class="el" href="UnaryUnionOp_8h_source.html">UnaryUnionOp.h</a>.</p>
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<td class="memname">std::vector<const <a class="el" href="classgeos_1_1geom_1_1LineString.html">geom::LineString</a>*> geos::operation::geounion::UnaryUnionOp::lines</td>
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<p>Definition at line <a class="el" href="UnaryUnionOp_8h_source.html#l00227">227</a> of file <a class="el" href="UnaryUnionOp_8h_source.html">UnaryUnionOp.h</a>.</p>
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<td class="memname">std::vector<const <a class="el" href="classgeos_1_1geom_1_1Point.html">geom::Point</a>*> geos::operation::geounion::UnaryUnionOp::points</td>
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<p>Definition at line <a class="el" href="UnaryUnionOp_8h_source.html#l00228">228</a> of file <a class="el" href="UnaryUnionOp_8h_source.html">UnaryUnionOp.h</a>.</p>
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<td class="memname">std::vector<const <a class="el" href="classgeos_1_1geom_1_1Polygon.html">geom::Polygon</a>*> geos::operation::geounion::UnaryUnionOp::polygons</td>
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<p>Definition at line <a class="el" href="UnaryUnionOp_8h_source.html#l00226">226</a> of file <a class="el" href="UnaryUnionOp_8h_source.html">UnaryUnionOp.h</a>.</p>
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<td class="memname"><a class="el" href="classgeos_1_1operation_1_1geounion_1_1UnionStrategy.html">UnionStrategy</a>* geos::operation::geounion::UnaryUnionOp::unionFunction</td>
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<p>Definition at line <a class="el" href="UnaryUnionOp_8h_source.html#l00233">233</a> of file <a class="el" href="UnaryUnionOp_8h_source.html">UnaryUnionOp.h</a>.</p>
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<hr/>The documentation for this class was generated from the following file:<ul>
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<li><a class="el" href="UnaryUnionOp_8h_source.html">UnaryUnionOp.h</a></li>
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