681 lines
37 KiB
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681 lines
37 KiB
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<title>GEOS: geos::operation::overlayng::PolygonBuilder Class Reference</title>
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 <span id="projectnumber">3.9.1dev</span>
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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_1overlayng.html">overlayng</a></li><li class="navelem"><a class="el" href="classgeos_1_1operation_1_1overlayng_1_1PolygonBuilder.html">PolygonBuilder</a></li> </ul>
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<a href="#pub-methods">Public Member Functions</a> |
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<a href="#pri-attribs">Private Attributes</a> |
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<div class="title">geos::operation::overlayng::PolygonBuilder Class Reference</div> </div>
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<div class="contents">
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<p><code>#include <<a class="el" href="g_2PolygonBuilder_8h_source.html">PolygonBuilder.h</a>></code></p>
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Collaboration diagram for geos::operation::overlayng::PolygonBuilder:</div>
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<div class="dyncontent">
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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:a1d31ea6fdd4610ff36ec55a6353b389d"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1overlayng_1_1PolygonBuilder.html#a1d31ea6fdd4610ff36ec55a6353b389d">PolygonBuilder</a> (std::vector< <a class="el" href="classgeos_1_1operation_1_1overlayng_1_1OverlayEdge.html">OverlayEdge</a> * > &resultAreaEdges, const <a class="el" href="classgeos_1_1geom_1_1GeometryFactory.html">geom::GeometryFactory</a> *geomFact)</td></tr>
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<tr class="separator:a1d31ea6fdd4610ff36ec55a6353b389d"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a0a6eab7ca22e47be6f8b70f0bcc168e8"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1overlayng_1_1PolygonBuilder.html#a0a6eab7ca22e47be6f8b70f0bcc168e8">PolygonBuilder</a> (std::vector< <a class="el" href="classgeos_1_1operation_1_1overlayng_1_1OverlayEdge.html">OverlayEdge</a> * > &resultAreaEdges, const <a class="el" href="classgeos_1_1geom_1_1GeometryFactory.html">geom::GeometryFactory</a> *geomFact, bool p_isEnforcePolygonal)</td></tr>
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<tr class="separator:a0a6eab7ca22e47be6f8b70f0bcc168e8"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:afe041f0251357677de8fe70c7efeaa6a"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1overlayng_1_1PolygonBuilder.html#afe041f0251357677de8fe70c7efeaa6a">PolygonBuilder</a> (const <a class="el" href="classgeos_1_1operation_1_1overlayng_1_1PolygonBuilder.html">PolygonBuilder</a> &)=delete</td></tr>
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<tr class="separator:afe041f0251357677de8fe70c7efeaa6a"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ac6e0c9e81666c97ff0a2c26a6f8555bd"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classgeos_1_1operation_1_1overlayng_1_1PolygonBuilder.html">PolygonBuilder</a> & </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1overlayng_1_1PolygonBuilder.html#ac6e0c9e81666c97ff0a2c26a6f8555bd">operator=</a> (const <a class="el" href="classgeos_1_1operation_1_1overlayng_1_1PolygonBuilder.html">PolygonBuilder</a> &)=delete</td></tr>
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<tr class="separator:ac6e0c9e81666c97ff0a2c26a6f8555bd"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ad2785a8dec1a562adbc858c15833ce01"><td class="memItemLeft" align="right" valign="top">std::vector< std::unique_ptr< <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_1overlayng_1_1PolygonBuilder.html#ad2785a8dec1a562adbc858c15833ce01">getPolygons</a> ()</td></tr>
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<tr class="separator:ad2785a8dec1a562adbc858c15833ce01"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a5c5b65cd23bf105fca2d01fd38c3cef2"><td class="memItemLeft" align="right" valign="top">std::vector< <a class="el" href="classgeos_1_1operation_1_1overlayng_1_1OverlayEdgeRing.html">OverlayEdgeRing</a> * > </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1overlayng_1_1PolygonBuilder.html#a5c5b65cd23bf105fca2d01fd38c3cef2">getShellRings</a> ()</td></tr>
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<tr class="separator:a5c5b65cd23bf105fca2d01fd38c3cef2"><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-methods"></a>
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Private Member Functions</h2></td></tr>
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<tr class="memitem:aee680b7fccbf72411a842580a6801682"><td class="memItemLeft" align="right" valign="top">std::vector< std::unique_ptr< <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_1overlayng_1_1PolygonBuilder.html#aee680b7fccbf72411a842580a6801682">computePolygons</a> (std::vector< <a class="el" href="classgeos_1_1operation_1_1overlayng_1_1OverlayEdgeRing.html">OverlayEdgeRing</a> * > <a class="el" href="classgeos_1_1operation_1_1overlayng_1_1PolygonBuilder.html#a7e19ae7f3d7baf7c7916fffed143c5fa">shellList</a>)</td></tr>
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<tr class="separator:aee680b7fccbf72411a842580a6801682"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:af868662318cd8153c1337a0149ced67b"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1overlayng_1_1PolygonBuilder.html#af868662318cd8153c1337a0149ced67b">buildRings</a> (std::vector< <a class="el" href="classgeos_1_1operation_1_1overlayng_1_1OverlayEdge.html">OverlayEdge</a> * > &resultAreaEdges)</td></tr>
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<tr class="separator:af868662318cd8153c1337a0149ced67b"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a76b80a0c0ef71c74f95cfb3c6553eb6e"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1overlayng_1_1PolygonBuilder.html#a76b80a0c0ef71c74f95cfb3c6553eb6e">linkResultAreaEdgesMax</a> (std::vector< <a class="el" href="classgeos_1_1operation_1_1overlayng_1_1OverlayEdge.html">OverlayEdge</a> * > &resultEdges)</td></tr>
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<tr class="separator:a76b80a0c0ef71c74f95cfb3c6553eb6e"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a6bdae1e4c20be77a2f460f37a9732717"><td class="memItemLeft" align="right" valign="top">std::vector< std::unique_ptr< <a class="el" href="classgeos_1_1operation_1_1overlayng_1_1MaximalEdgeRing.html">MaximalEdgeRing</a> > > </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1overlayng_1_1PolygonBuilder.html#a6bdae1e4c20be77a2f460f37a9732717">buildMaximalRings</a> (std::vector< <a class="el" href="classgeos_1_1operation_1_1overlayng_1_1OverlayEdge.html">OverlayEdge</a> * > &edges)</td></tr>
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<tr class="separator:a6bdae1e4c20be77a2f460f37a9732717"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a14c0d069e6fa3fdf3c3c2f4c7e03bf23"><td class="memItemLeft" align="right" valign="top">std::vector< <a class="el" href="classgeos_1_1operation_1_1overlayng_1_1OverlayEdgeRing.html">OverlayEdgeRing</a> * > </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1overlayng_1_1PolygonBuilder.html#a14c0d069e6fa3fdf3c3c2f4c7e03bf23">storeMinimalRings</a> (std::vector< std::unique_ptr< <a class="el" href="classgeos_1_1operation_1_1overlayng_1_1OverlayEdgeRing.html">OverlayEdgeRing</a> >> &minRings)</td></tr>
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<tr class="separator:a14c0d069e6fa3fdf3c3c2f4c7e03bf23"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a8cc6b438fddecd3d1e056a1a72367027"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1overlayng_1_1PolygonBuilder.html#a8cc6b438fddecd3d1e056a1a72367027">buildMinimalRings</a> (std::vector< std::unique_ptr< <a class="el" href="classgeos_1_1operation_1_1overlayng_1_1MaximalEdgeRing.html">MaximalEdgeRing</a> >> &maxRings)</td></tr>
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<tr class="separator:a8cc6b438fddecd3d1e056a1a72367027"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a2aa48e6eceb8a1939afeb4173c040359"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1overlayng_1_1PolygonBuilder.html#a2aa48e6eceb8a1939afeb4173c040359">assignShellsAndHoles</a> (std::vector< <a class="el" href="classgeos_1_1operation_1_1overlayng_1_1OverlayEdgeRing.html">OverlayEdgeRing</a> * > &minRings)</td></tr>
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<tr class="separator:a2aa48e6eceb8a1939afeb4173c040359"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ae26dc47bfabdbdff1d3a6a21a290b73c"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classgeos_1_1operation_1_1overlayng_1_1OverlayEdgeRing.html">OverlayEdgeRing</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1overlayng_1_1PolygonBuilder.html#ae26dc47bfabdbdff1d3a6a21a290b73c">findSingleShell</a> (std::vector< <a class="el" href="classgeos_1_1operation_1_1overlayng_1_1OverlayEdgeRing.html">OverlayEdgeRing</a> * > &edgeRings) const </td></tr>
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<tr class="memitem:ae1a0b942db88de656574d74f35f84b3f"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1overlayng_1_1PolygonBuilder.html#ae1a0b942db88de656574d74f35f84b3f">assignHoles</a> (<a class="el" href="classgeos_1_1operation_1_1overlayng_1_1OverlayEdgeRing.html">OverlayEdgeRing</a> *shell, std::vector< <a class="el" href="classgeos_1_1operation_1_1overlayng_1_1OverlayEdgeRing.html">OverlayEdgeRing</a> * > &edgeRings)</td></tr>
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<tr class="separator:ae1a0b942db88de656574d74f35f84b3f"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:aa68f97bc90fbc03d38ba79ffa38b74f4"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1overlayng_1_1PolygonBuilder.html#aa68f97bc90fbc03d38ba79ffa38b74f4">placeFreeHoles</a> (std::vector< <a class="el" href="classgeos_1_1operation_1_1overlayng_1_1OverlayEdgeRing.html">OverlayEdgeRing</a> * > <a class="el" href="classgeos_1_1operation_1_1overlayng_1_1PolygonBuilder.html#a7e19ae7f3d7baf7c7916fffed143c5fa">shellList</a>, std::vector< <a class="el" href="classgeos_1_1operation_1_1overlayng_1_1OverlayEdgeRing.html">OverlayEdgeRing</a> * > <a class="el" href="classgeos_1_1operation_1_1overlayng_1_1PolygonBuilder.html#a863d762e416ab5505687af242bdebd34">freeHoleList</a>)</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:a31723922b99ce49c53e01165f34e9585"><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_1overlayng_1_1PolygonBuilder.html#a31723922b99ce49c53e01165f34e9585">geometryFactory</a></td></tr>
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<tr class="memitem:a7e19ae7f3d7baf7c7916fffed143c5fa"><td class="memItemLeft" align="right" valign="top">std::vector< <a class="el" href="classgeos_1_1operation_1_1overlayng_1_1OverlayEdgeRing.html">OverlayEdgeRing</a> * > </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1overlayng_1_1PolygonBuilder.html#a7e19ae7f3d7baf7c7916fffed143c5fa">shellList</a></td></tr>
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<tr class="separator:a7e19ae7f3d7baf7c7916fffed143c5fa"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a863d762e416ab5505687af242bdebd34"><td class="memItemLeft" align="right" valign="top">std::vector< <a class="el" href="classgeos_1_1operation_1_1overlayng_1_1OverlayEdgeRing.html">OverlayEdgeRing</a> * > </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1overlayng_1_1PolygonBuilder.html#a863d762e416ab5505687af242bdebd34">freeHoleList</a></td></tr>
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<tr class="separator:a863d762e416ab5505687af242bdebd34"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ac0d0fd244cea1ec86ba5cda0a0c52f3d"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1overlayng_1_1PolygonBuilder.html#ac0d0fd244cea1ec86ba5cda0a0c52f3d">isEnforcePolygonal</a></td></tr>
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<tr class="memitem:a5ce0029c20edc6be7ea97a7af9492c14"><td class="memItemLeft" align="right" valign="top">std::vector< std::unique_ptr< <a class="el" href="classgeos_1_1operation_1_1overlayng_1_1OverlayEdgeRing.html">OverlayEdgeRing</a> > > </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1overlayng_1_1PolygonBuilder.html#a5ce0029c20edc6be7ea97a7af9492c14">vecOER</a></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
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<div class="textblock">
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<p>Definition at line <a class="el" href="g_2PolygonBuilder_8h_source.html#l00045">45</a> of file <a class="el" href="g_2PolygonBuilder_8h_source.html">g/PolygonBuilder.h</a>.</p>
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</div><h2 class="groupheader">Constructor & Destructor Documentation</h2>
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<a class="anchor" id="a1d31ea6fdd4610ff36ec55a6353b389d"></a>
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<td class="memname">geos::operation::overlayng::PolygonBuilder::PolygonBuilder </td>
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<td>(</td>
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<td class="paramtype">std::vector< <a class="el" href="classgeos_1_1operation_1_1overlayng_1_1OverlayEdge.html">OverlayEdge</a> * > & </td>
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<td class="paramname"><em>resultAreaEdges</em>, </td>
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<td class="paramtype">const <a class="el" href="classgeos_1_1geom_1_1GeometryFactory.html">geom::GeometryFactory</a> * </td>
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<td class="paramname"><em>geomFact</em> </td>
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<td>)</td>
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<p>Definition at line <a class="el" href="g_2PolygonBuilder_8h_source.html#l00123">123</a> of file <a class="el" href="g_2PolygonBuilder_8h_source.html">g/PolygonBuilder.h</a>.</p>
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<p>Definition at line <a class="el" href="g_2PolygonBuilder_8h_source.html#l00130">130</a> of file <a class="el" href="g_2PolygonBuilder_8h_source.html">g/PolygonBuilder.h</a>.</p>
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<h2 class="groupheader">Member Function Documentation</h2>
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<td class="paramtype"><a class="el" href="classgeos_1_1operation_1_1overlayng_1_1OverlayEdgeRing.html">OverlayEdgeRing</a> * </td>
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<p>For the set of minimal rings comprising a maximal ring, assigns the holes to the shell known to contain them. Assigning the holes directly to the shell serves two purposes:</p>
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<li>it is faster than using a point-in-polygon check later on.</li>
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<li>it ensures correctness, since if the PIP test was used the point chosen might lie on the shell, which might return an incorrect result from the PIP test </li>
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<td class="memname">void geos::operation::overlayng::PolygonBuilder::assignShellsAndHoles </td>
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<td class="memname">std::vector<std::unique_ptr<<a class="el" href="classgeos_1_1operation_1_1overlayng_1_1MaximalEdgeRing.html">MaximalEdgeRing</a>> > geos::operation::overlayng::PolygonBuilder::buildMaximalRings </td>
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<p>For all OverlayEdge*s in result, form them into MaximalEdgeRings </p>
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<td class="memname">void geos::operation::overlayng::PolygonBuilder::buildMinimalRings </td>
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<td class="memname">void geos::operation::overlayng::PolygonBuilder::buildRings </td>
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<td class="memname">std::vector<std::unique_ptr<<a class="el" href="classgeos_1_1geom_1_1Polygon.html">geom::Polygon</a>> > geos::operation::overlayng::PolygonBuilder::computePolygons </td>
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<td class="memname"><a class="el" href="classgeos_1_1operation_1_1overlayng_1_1OverlayEdgeRing.html">OverlayEdgeRing</a>* geos::operation::overlayng::PolygonBuilder::findSingleShell </td>
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<p>Finds the single shell, if any, out of a list of minimal rings derived from a maximal ring. The other possibility is that they are a set of (connected) holes, in which case no shell will be found.</p>
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<dl class="section return"><dt>Returns</dt><dd>the shell ring, if there is one or null, if all rings are holes </dd></dl>
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<td class="memname">std::vector<std::unique_ptr<<a class="el" href="classgeos_1_1geom_1_1Polygon.html">geom::Polygon</a>> > geos::operation::overlayng::PolygonBuilder::getPolygons </td>
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<td class="memname">void geos::operation::overlayng::PolygonBuilder::linkResultAreaEdgesMax </td>
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<td class="memname"><a class="el" href="classgeos_1_1operation_1_1overlayng_1_1PolygonBuilder.html">PolygonBuilder</a>& geos::operation::overlayng::PolygonBuilder::operator= </td>
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<td class="memname">void geos::operation::overlayng::PolygonBuilder::placeFreeHoles </td>
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<p>Place holes have not yet been assigned to a shell. These "free" holes should all be <b>properly</b> contained in their parent shells, so it is safe to use the <code>findEdgeRingContaining</code> method. (This is the case because any holes which are NOT properly contained (i.e. are connected to their parent shell) would have formed part of a <a class="el" href="classgeos_1_1operation_1_1overlayng_1_1MaximalEdgeRing.html">MaximalEdgeRing</a> and been handled in a previous step).</p>
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<td class="memname">std::vector<<a class="el" href="classgeos_1_1operation_1_1overlayng_1_1OverlayEdgeRing.html">OverlayEdgeRing</a>*> geos::operation::overlayng::PolygonBuilder::storeMinimalRings </td>
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<p>The lifespan of the OverlayEdgeRings is tieds to the lifespan of the <a class="el" href="classgeos_1_1operation_1_1overlayng_1_1PolygonBuilder.html">PolygonBuilder</a>, so we hold them on the <a class="el" href="classgeos_1_1operation_1_1overlayng_1_1PolygonBuilder.html">PolygonBuilder</a> and use bare pointers for managing the relationships </p>
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<h2 class="groupheader">Member Data Documentation</h2>
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<td class="memname">std::vector<<a class="el" href="classgeos_1_1operation_1_1overlayng_1_1OverlayEdgeRing.html">OverlayEdgeRing</a>*> geos::operation::overlayng::PolygonBuilder::freeHoleList</td>
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<p>Definition at line <a class="el" href="g_2PolygonBuilder_8h_source.html#l00052">52</a> of file <a class="el" href="g_2PolygonBuilder_8h_source.html">g/PolygonBuilder.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::overlayng::PolygonBuilder::geometryFactory</td>
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<p>Definition at line <a class="el" href="g_2PolygonBuilder_8h_source.html#l00050">50</a> of file <a class="el" href="g_2PolygonBuilder_8h_source.html">g/PolygonBuilder.h</a>.</p>
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<td class="memname">bool geos::operation::overlayng::PolygonBuilder::isEnforcePolygonal</td>
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<p>Definition at line <a class="el" href="g_2PolygonBuilder_8h_source.html#l00053">53</a> of file <a class="el" href="g_2PolygonBuilder_8h_source.html">g/PolygonBuilder.h</a>.</p>
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<td class="memname">std::vector<<a class="el" href="classgeos_1_1operation_1_1overlayng_1_1OverlayEdgeRing.html">OverlayEdgeRing</a>*> geos::operation::overlayng::PolygonBuilder::shellList</td>
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<p>Definition at line <a class="el" href="g_2PolygonBuilder_8h_source.html#l00051">51</a> of file <a class="el" href="g_2PolygonBuilder_8h_source.html">g/PolygonBuilder.h</a>.</p>
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<td class="memname">std::vector<std::unique_ptr<<a class="el" href="classgeos_1_1operation_1_1overlayng_1_1OverlayEdgeRing.html">OverlayEdgeRing</a>> > geos::operation::overlayng::PolygonBuilder::vecOER</td>
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<p>Definition at line <a class="el" href="g_2PolygonBuilder_8h_source.html#l00056">56</a> of file <a class="el" href="g_2PolygonBuilder_8h_source.html">g/PolygonBuilder.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="g_2PolygonBuilder_8h_source.html">g/PolygonBuilder.h</a></li>
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