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735 lines
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<title>GEOS: geos::operation::buffer::BufferSubgraph 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_1buffer.html">buffer</a></li><li class="navelem"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferSubgraph.html">BufferSubgraph</a></li> </ul>
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<a href="#pub-methods">Public Member Functions</a> |
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<div class="title">geos::operation::buffer::BufferSubgraph Class Reference</div> </div>
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<p>A connected subset of the graph of DirectedEdge and <a class="el" href="classgeos_1_1geomgraph_1_1Node.html" title="The node component of a geometry graph. ">geomgraph::Node</a>.
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<a href="classgeos_1_1operation_1_1buffer_1_1BufferSubgraph.html#details">More...</a></p>
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<p><code>#include <<a class="el" href="BufferSubgraph_8h_source.html">BufferSubgraph.h</a>></code></p>
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Collaboration diagram for geos::operation::buffer::BufferSubgraph:</div>
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<div class="center"><div class="zoom"><iframe scrolling="no" frameborder="0" src="classgeos_1_1operation_1_1buffer_1_1BufferSubgraph__coll__graph.svg" width="100%" height="600"><p><b>This browser is not able to show SVG: try Firefox, Chrome, Safari, or Opera instead.</b></p></iframe></div>
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<center><span class="legend">[<a href="graph_legend.html">legend</a>]</span></center></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:a752c6da9b8b121d887312310380143c1"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferSubgraph.html#a752c6da9b8b121d887312310380143c1">BufferSubgraph</a> ()</td></tr>
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<tr class="separator:a752c6da9b8b121d887312310380143c1"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a33bb2b0590085db64b3334775d62fd8c"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferSubgraph.html#a33bb2b0590085db64b3334775d62fd8c">~BufferSubgraph</a> ()</td></tr>
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<tr class="separator:a33bb2b0590085db64b3334775d62fd8c"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a90183bfeff847ea53ee3c4ffc4247f92"><td class="memItemLeft" align="right" valign="top">std::vector< <a class="el" href="classgeos_1_1geomgraph_1_1DirectedEdge.html">geomgraph::DirectedEdge</a> * > * </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferSubgraph.html#a90183bfeff847ea53ee3c4ffc4247f92">getDirectedEdges</a> ()</td></tr>
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<tr class="separator:a90183bfeff847ea53ee3c4ffc4247f92"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a0d25d22554122e82673e960f3ce09024"><td class="memItemLeft" align="right" valign="top">std::vector< <a class="el" href="classgeos_1_1geomgraph_1_1Node.html">geomgraph::Node</a> * > * </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferSubgraph.html#a0d25d22554122e82673e960f3ce09024">getNodes</a> ()</td></tr>
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<tr class="separator:a0d25d22554122e82673e960f3ce09024"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ad538dc7d77bf1734154a72f1e5e70efd"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferSubgraph.html#ad538dc7d77bf1734154a72f1e5e70efd">getRightmostCoordinate</a> ()</td></tr>
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<tr class="memdesc:ad538dc7d77bf1734154a72f1e5e70efd"><td class="mdescLeft"> </td><td class="mdescRight">Gets the rightmost coordinate in the edges of the subgraph. <a href="#ad538dc7d77bf1734154a72f1e5e70efd">More...</a><br /></td></tr>
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<tr class="separator:ad538dc7d77bf1734154a72f1e5e70efd"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a8dc803819dd05363f4f07568f32d926b"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferSubgraph.html#a8dc803819dd05363f4f07568f32d926b">create</a> (<a class="el" href="classgeos_1_1geomgraph_1_1Node.html">geomgraph::Node</a> *node)</td></tr>
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<tr class="memdesc:a8dc803819dd05363f4f07568f32d926b"><td class="mdescLeft"> </td><td class="mdescRight">Creates the subgraph consisting of all edges reachable from this node. <a href="#a8dc803819dd05363f4f07568f32d926b">More...</a><br /></td></tr>
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<tr class="separator:a8dc803819dd05363f4f07568f32d926b"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a3dca5aa4bbf59c76663a109226115674"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferSubgraph.html#a3dca5aa4bbf59c76663a109226115674">computeDepth</a> (int outsideDepth)</td></tr>
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<tr class="separator:a3dca5aa4bbf59c76663a109226115674"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a675417cc0401769dc15885568ebcafa3"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferSubgraph.html#a675417cc0401769dc15885568ebcafa3">findResultEdges</a> ()</td></tr>
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<tr class="memdesc:a675417cc0401769dc15885568ebcafa3"><td class="mdescLeft"> </td><td class="mdescRight">Find all edges whose depths indicates that they are in the result area(s). <a href="#a675417cc0401769dc15885568ebcafa3">More...</a><br /></td></tr>
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<tr class="separator:a675417cc0401769dc15885568ebcafa3"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a87da13f45282fca2f1974b7c3e8279b7"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferSubgraph.html#a87da13f45282fca2f1974b7c3e8279b7">compareTo</a> (<a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferSubgraph.html">BufferSubgraph</a> *)</td></tr>
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<tr class="memdesc:a87da13f45282fca2f1974b7c3e8279b7"><td class="mdescLeft"> </td><td class="mdescRight">BufferSubgraphs are compared on the x-value of their rightmost Coordinate. <a href="#a87da13f45282fca2f1974b7c3e8279b7">More...</a><br /></td></tr>
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<tr class="separator:a87da13f45282fca2f1974b7c3e8279b7"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ac70a77fe64bdc345a1a104255a23e9e0"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classgeos_1_1geom_1_1Envelope.html">geom::Envelope</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferSubgraph.html#ac70a77fe64bdc345a1a104255a23e9e0">getEnvelope</a> ()</td></tr>
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<tr class="memdesc:ac70a77fe64bdc345a1a104255a23e9e0"><td class="mdescLeft"> </td><td class="mdescRight">Computes the envelope of the edges in the subgraph. The envelope is cached after being computed. <a href="#ac70a77fe64bdc345a1a104255a23e9e0">More...</a><br /></td></tr>
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<tr class="separator:ac70a77fe64bdc345a1a104255a23e9e0"><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:a6826f18b20b1e4937c096923c016cf56"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferSubgraph.html#a6826f18b20b1e4937c096923c016cf56">addReachable</a> (<a class="el" href="classgeos_1_1geomgraph_1_1Node.html">geomgraph::Node</a> *startNode)</td></tr>
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<tr class="memdesc:a6826f18b20b1e4937c096923c016cf56"><td class="mdescLeft"> </td><td class="mdescRight">Adds all nodes and edges reachable from this node to the subgraph. <a href="#a6826f18b20b1e4937c096923c016cf56">More...</a><br /></td></tr>
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<tr class="separator:a6826f18b20b1e4937c096923c016cf56"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:af2ac4269992098c1b7f8e16d5798ac55"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferSubgraph.html#af2ac4269992098c1b7f8e16d5798ac55">add</a> (<a class="el" href="classgeos_1_1geomgraph_1_1Node.html">geomgraph::Node</a> *node, std::vector< <a class="el" href="classgeos_1_1geomgraph_1_1Node.html">geomgraph::Node</a> * > *nodeStack)</td></tr>
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<tr class="separator:af2ac4269992098c1b7f8e16d5798ac55"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ad37737b429bf5af0d33d09179ad3e9aa"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferSubgraph.html#ad37737b429bf5af0d33d09179ad3e9aa">clearVisitedEdges</a> ()</td></tr>
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<tr class="separator:ad37737b429bf5af0d33d09179ad3e9aa"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a7e671984e3a6d2a50e4cd340e87ed4b9"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferSubgraph.html#a7e671984e3a6d2a50e4cd340e87ed4b9">computeDepths</a> (<a class="el" href="classgeos_1_1geomgraph_1_1DirectedEdge.html">geomgraph::DirectedEdge</a> *startEdge)</td></tr>
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<tr class="memdesc:a7e671984e3a6d2a50e4cd340e87ed4b9"><td class="mdescLeft"> </td><td class="mdescRight">Compute depths for all dirEdges via breadth-first traversal of nodes in graph. <a href="#a7e671984e3a6d2a50e4cd340e87ed4b9">More...</a><br /></td></tr>
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<tr class="separator:a7e671984e3a6d2a50e4cd340e87ed4b9"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:aa10613dc8ce6419a7e86c5d12e969ac6"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferSubgraph.html#aa10613dc8ce6419a7e86c5d12e969ac6">computeNodeDepth</a> (<a class="el" href="classgeos_1_1geomgraph_1_1Node.html">geomgraph::Node</a> *n)</td></tr>
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<tr class="separator:aa10613dc8ce6419a7e86c5d12e969ac6"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a5ccaec7195128090201d9e7ce10cac4e"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferSubgraph.html#a5ccaec7195128090201d9e7ce10cac4e">copySymDepths</a> (<a class="el" href="classgeos_1_1geomgraph_1_1DirectedEdge.html">geomgraph::DirectedEdge</a> *de)</td></tr>
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<tr class="memitem:ac07c646a55a2d5dc140c7a962c87f948"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferSubgraph.html#ac07c646a55a2d5dc140c7a962c87f948">contains</a> (std::set< <a class="el" href="classgeos_1_1geomgraph_1_1Node.html">geomgraph::Node</a> * > &<a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferSubgraph.html#a24c54533ba3edb54fd130f78bc68c818">nodes</a>, <a class="el" href="classgeos_1_1geomgraph_1_1Node.html">geomgraph::Node</a> *node)</td></tr>
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<tr class="separator:ac07c646a55a2d5dc140c7a962c87f948"><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:aa1e64b398a3fe2de98690d74dc803b9f"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1RightmostEdgeFinder.html">RightmostEdgeFinder</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferSubgraph.html#aa1e64b398a3fe2de98690d74dc803b9f">finder</a></td></tr>
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<tr class="separator:aa1e64b398a3fe2de98690d74dc803b9f"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a05886a18011c3be599318a0dae42eb09"><td class="memItemLeft" align="right" valign="top">std::vector< <a class="el" href="classgeos_1_1geomgraph_1_1DirectedEdge.html">geomgraph::DirectedEdge</a> * > </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferSubgraph.html#a05886a18011c3be599318a0dae42eb09">dirEdgeList</a></td></tr>
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<tr class="separator:a05886a18011c3be599318a0dae42eb09"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a24c54533ba3edb54fd130f78bc68c818"><td class="memItemLeft" align="right" valign="top">std::vector< <a class="el" href="classgeos_1_1geomgraph_1_1Node.html">geomgraph::Node</a> * > </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferSubgraph.html#a24c54533ba3edb54fd130f78bc68c818">nodes</a></td></tr>
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<tr class="separator:a24c54533ba3edb54fd130f78bc68c818"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a65a898a19b448ea6e88a2faa1902ee00"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferSubgraph.html#a65a898a19b448ea6e88a2faa1902ee00">rightMostCoord</a></td></tr>
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<tr class="memitem:a82a546a659aa9c697f76341649b1e999"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classgeos_1_1geom_1_1Envelope.html">geom::Envelope</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferSubgraph.html#a82a546a659aa9c697f76341649b1e999">env</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="friends"></a>
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Friends</h2></td></tr>
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<tr class="memitem:a186c99f44e12e0053c44f9539dfe21a3"><td class="memItemLeft" align="right" valign="top">std::ostream & </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferSubgraph.html#a186c99f44e12e0053c44f9539dfe21a3">operator<<</a> (std::ostream &os, const <a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferSubgraph.html">BufferSubgraph</a> &bs)</td></tr>
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<tr class="separator:a186c99f44e12e0053c44f9539dfe21a3"><td class="memSeparator" colspan="2"> </td></tr>
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</table>
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||
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
|
||
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<div class="textblock"><p>A connected subset of the graph of DirectedEdge and <a class="el" href="classgeos_1_1geomgraph_1_1Node.html" title="The node component of a geometry graph. ">geomgraph::Node</a>. </p>
|
||
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<p>Its edges will generate either</p><ul>
|
||
|
<li>a single polygon in the complete buffer, with zero or more holes, or</li>
|
||
|
<li>ne or more connected holes </li>
|
||
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</ul>
|
||
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|
||
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<p>Definition at line <a class="el" href="BufferSubgraph_8h_source.html#l00061">61</a> of file <a class="el" href="BufferSubgraph_8h_source.html">BufferSubgraph.h</a>.</p>
|
||
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</div><h2 class="groupheader">Constructor & Destructor Documentation</h2>
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<a class="anchor" id="a752c6da9b8b121d887312310380143c1"></a>
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<td class="memname">geos::operation::buffer::BufferSubgraph::BufferSubgraph </td>
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||
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<td>(</td>
|
||
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<td class="paramname"></td><td>)</td>
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<td></td>
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<td class="memname">geos::operation::buffer::BufferSubgraph::~BufferSubgraph </td>
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<td>(</td>
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<td class="paramname"></td><td>)</td>
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<td></td>
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</div><div class="memdoc">
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</div>
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||
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<h2 class="groupheader">Member Function Documentation</h2>
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<a class="anchor" id="af2ac4269992098c1b7f8e16d5798ac55"></a>
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<td class="memname">void geos::operation::buffer::BufferSubgraph::add </td>
|
||
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<td>(</td>
|
||
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<td class="paramtype"><a class="el" href="classgeos_1_1geomgraph_1_1Node.html">geomgraph::Node</a> * </td>
|
||
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<td class="paramname"><em>node</em>, </td>
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||
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||
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||
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<td class="paramkey"></td>
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||
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<td></td>
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||
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<td class="paramtype">std::vector< <a class="el" href="classgeos_1_1geomgraph_1_1Node.html">geomgraph::Node</a> * > * </td>
|
||
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<td class="paramname"><em>nodeStack</em> </td>
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||
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||
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||
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<td></td>
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<td>)</td>
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</td>
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<span class="mlabels"><span class="mlabel">private</span></span> </td>
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||
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||
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||
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</div><div class="memdoc">
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||
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<p>Adds the argument node and all its out edges to the subgraph</p>
|
||
|
<dl class="params"><dt>Parameters</dt><dd>
|
||
|
<table class="params">
|
||
|
<tr><td class="paramname">node</td><td>the node to add </td></tr>
|
||
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<tr><td class="paramname">nodeStack</td><td>the current set of nodes being traversed </td></tr>
|
||
|
</table>
|
||
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</dd>
|
||
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</dl>
|
||
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|
||
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||
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||
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<a class="anchor" id="a6826f18b20b1e4937c096923c016cf56"></a>
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||
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<td class="mlabels-left">
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||
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||
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||
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<td class="memname">void geos::operation::buffer::BufferSubgraph::addReachable </td>
|
||
|
<td>(</td>
|
||
|
<td class="paramtype"><a class="el" href="classgeos_1_1geomgraph_1_1Node.html">geomgraph::Node</a> * </td>
|
||
|
<td class="paramname"><em>startNode</em></td><td>)</td>
|
||
|
<td></td>
|
||
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|
||
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|
||
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</td>
|
||
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<td class="mlabels-right">
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||
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<span class="mlabels"><span class="mlabel">private</span></span> </td>
|
||
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|
||
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</table>
|
||
|
</div><div class="memdoc">
|
||
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|
||
|
<p>Adds all nodes and edges reachable from this node to the subgraph. </p>
|
||
|
<p>Uses an explicit stack to avoid a large depth of recursion.</p>
|
||
|
<dl class="params"><dt>Parameters</dt><dd>
|
||
|
<table class="params">
|
||
|
<tr><td class="paramname">startNode</td><td>a node known to be in the subgraph </td></tr>
|
||
|
</table>
|
||
|
</dd>
|
||
|
</dl>
|
||
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|
||
|
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|
||
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|
||
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<a class="anchor" id="ad37737b429bf5af0d33d09179ad3e9aa"></a>
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||
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||
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||
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||
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<td class="mlabels-left">
|
||
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|
||
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||
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<td class="memname">void geos::operation::buffer::BufferSubgraph::clearVisitedEdges </td>
|
||
|
<td>(</td>
|
||
|
<td class="paramname"></td><td>)</td>
|
||
|
<td></td>
|
||
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||
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|
||
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</td>
|
||
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|
||
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<span class="mlabels"><span class="mlabel">private</span></span> </td>
|
||
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|
||
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|
||
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||
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||
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<a class="anchor" id="a87da13f45282fca2f1974b7c3e8279b7"></a>
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||
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||
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||
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<table class="memname">
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||
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<tr>
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||
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<td class="memname">int geos::operation::buffer::BufferSubgraph::compareTo </td>
|
||
|
<td>(</td>
|
||
|
<td class="paramtype"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferSubgraph.html">BufferSubgraph</a> * </td>
|
||
|
<td class="paramname"></td><td>)</td>
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||
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<td></td>
|
||
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|
||
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|
||
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</div><div class="memdoc">
|
||
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|
||
|
<p>BufferSubgraphs are compared on the x-value of their rightmost Coordinate. </p>
|
||
|
<p>This defines a partial ordering on the graphs such that:</p>
|
||
|
<p>g1 >= g2 <==> Ring(g2) does not contain Ring(g1)</p>
|
||
|
<p>where Polygon(g) is the buffer polygon that is built from g.</p>
|
||
|
<p>This relationship is used to sort the BufferSubgraphs so that shells are guaranteed to be built before holes. </p>
|
||
|
|
||
|
</div>
|
||
|
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|
||
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<a class="anchor" id="a3dca5aa4bbf59c76663a109226115674"></a>
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||
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||
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<td class="memname">void geos::operation::buffer::BufferSubgraph::computeDepth </td>
|
||
|
<td>(</td>
|
||
|
<td class="paramtype">int </td>
|
||
|
<td class="paramname"><em>outsideDepth</em></td><td>)</td>
|
||
|
<td></td>
|
||
|
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|
||
|
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|
||
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|
||
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||
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||
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|
||
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|
||
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||
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<td class="memname">void geos::operation::buffer::BufferSubgraph::computeDepths </td>
|
||
|
<td>(</td>
|
||
|
<td class="paramtype"><a class="el" href="classgeos_1_1geomgraph_1_1DirectedEdge.html">geomgraph::DirectedEdge</a> * </td>
|
||
|
<td class="paramname"><em>startEdge</em></td><td>)</td>
|
||
|
<td></td>
|
||
|
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|
||
|
</table>
|
||
|
</td>
|
||
|
<td class="mlabels-right">
|
||
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<span class="mlabels"><span class="mlabel">private</span></span> </td>
|
||
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|
||
|
</table>
|
||
|
</div><div class="memdoc">
|
||
|
|
||
|
<p>Compute depths for all dirEdges via breadth-first traversal of nodes in graph. </p>
|
||
|
<dl class="params"><dt>Parameters</dt><dd>
|
||
|
<table class="params">
|
||
|
<tr><td class="paramname">startEdge</td><td>edge to start processing with </td></tr>
|
||
|
</table>
|
||
|
</dd>
|
||
|
</dl>
|
||
|
|
||
|
</div>
|
||
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|
||
|
<a class="anchor" id="aa10613dc8ce6419a7e86c5d12e969ac6"></a>
|
||
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||
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||
|
<td class="mlabels-left">
|
||
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|
||
|
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|
||
|
<td class="memname">void geos::operation::buffer::BufferSubgraph::computeNodeDepth </td>
|
||
|
<td>(</td>
|
||
|
<td class="paramtype"><a class="el" href="classgeos_1_1geomgraph_1_1Node.html">geomgraph::Node</a> * </td>
|
||
|
<td class="paramname"><em>n</em></td><td>)</td>
|
||
|
<td></td>
|
||
|
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|
||
|
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|
||
|
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|
||
|
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|
||
|
<span class="mlabels"><span class="mlabel">private</span></span> </td>
|
||
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|
||
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|
||
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|
||
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|
||
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||
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||
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||
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<td class="memname">bool geos::operation::buffer::BufferSubgraph::contains </td>
|
||
|
<td>(</td>
|
||
|
<td class="paramtype">std::set< <a class="el" href="classgeos_1_1geomgraph_1_1Node.html">geomgraph::Node</a> * > & </td>
|
||
|
<td class="paramname"><em>nodes</em>, </td>
|
||
|
</tr>
|
||
|
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|
||
|
<td class="paramkey"></td>
|
||
|
<td></td>
|
||
|
<td class="paramtype"><a class="el" href="classgeos_1_1geomgraph_1_1Node.html">geomgraph::Node</a> * </td>
|
||
|
<td class="paramname"><em>node</em> </td>
|
||
|
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|
||
|
<tr>
|
||
|
<td></td>
|
||
|
<td>)</td>
|
||
|
<td></td><td></td>
|
||
|
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|
||
|
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|
||
|
</td>
|
||
|
<td class="mlabels-right">
|
||
|
<span class="mlabels"><span class="mlabel">private</span></span> </td>
|
||
|
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|
||
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|
||
|
</div><div class="memdoc">
|
||
|
|
||
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|
||
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|
||
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<a class="anchor" id="a5ccaec7195128090201d9e7ce10cac4e"></a>
|
||
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<div class="memitem">
|
||
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|
||
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||
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||
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|
||
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|
||
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|
||
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<td class="memname">void geos::operation::buffer::BufferSubgraph::copySymDepths </td>
|
||
|
<td>(</td>
|
||
|
<td class="paramtype"><a class="el" href="classgeos_1_1geomgraph_1_1DirectedEdge.html">geomgraph::DirectedEdge</a> * </td>
|
||
|
<td class="paramname"><em>de</em></td><td>)</td>
|
||
|
<td></td>
|
||
|
</tr>
|
||
|
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|
||
|
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|
||
|
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|
||
|
<span class="mlabels"><span class="mlabel">private</span></span> </td>
|
||
|
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|
||
|
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|
||
|
</div><div class="memdoc">
|
||
|
|
||
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|
||
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|
||
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||
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||
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|
||
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|
||
|
<td class="memname">void geos::operation::buffer::BufferSubgraph::create </td>
|
||
|
<td>(</td>
|
||
|
<td class="paramtype"><a class="el" href="classgeos_1_1geomgraph_1_1Node.html">geomgraph::Node</a> * </td>
|
||
|
<td class="paramname"><em>node</em></td><td>)</td>
|
||
|
<td></td>
|
||
|
</tr>
|
||
|
</table>
|
||
|
</div><div class="memdoc">
|
||
|
|
||
|
<p>Creates the subgraph consisting of all edges reachable from this node. </p>
|
||
|
<p>Finds the edges in the graph and the rightmost coordinate.</p>
|
||
|
<dl class="params"><dt>Parameters</dt><dd>
|
||
|
<table class="params">
|
||
|
<tr><td class="paramname">node</td><td>a node to start the graph traversal from </td></tr>
|
||
|
</table>
|
||
|
</dd>
|
||
|
</dl>
|
||
|
|
||
|
</div>
|
||
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|
||
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<a class="anchor" id="a675417cc0401769dc15885568ebcafa3"></a>
|
||
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|
||
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|
||
|
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|
||
|
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|
||
|
<td class="memname">void geos::operation::buffer::BufferSubgraph::findResultEdges </td>
|
||
|
<td>(</td>
|
||
|
<td class="paramname"></td><td>)</td>
|
||
|
<td></td>
|
||
|
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|
||
|
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|
||
|
</div><div class="memdoc">
|
||
|
|
||
|
<p>Find all edges whose depths indicates that they are in the result area(s). </p>
|
||
|
<p>Since we want polygon shells to be oriented CW, choose dirEdges with the interior of the result on the RHS. Mark them as being in the result. Interior Area edges are the result of dimensional collapses. They do not form part of the result area boundary. </p>
|
||
|
|
||
|
</div>
|
||
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|
||
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<a class="anchor" id="a90183bfeff847ea53ee3c4ffc4247f92"></a>
|
||
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|
||
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|
||
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|
||
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||
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||
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|
||
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|
||
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<td class="memname">std::vector< <a class="el" href="classgeos_1_1geomgraph_1_1DirectedEdge.html">geomgraph::DirectedEdge</a> * > * geos::operation::buffer::BufferSubgraph::getDirectedEdges </td>
|
||
|
<td>(</td>
|
||
|
<td class="paramname"></td><td>)</td>
|
||
|
<td></td>
|
||
|
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|
||
|
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|
||
|
</td>
|
||
|
<td class="mlabels-right">
|
||
|
<span class="mlabels"><span class="mlabel">inline</span></span> </td>
|
||
|
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|
||
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|
||
|
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|
||
|
|
||
|
<p>Definition at line <a class="el" href="BufferSubgraph_8h_source.html#l00189">189</a> of file <a class="el" href="BufferSubgraph_8h_source.html">BufferSubgraph.h</a>.</p>
|
||
|
|
||
|
<p>References <a class="el" href="namespacegeos_1_1operation_1_1buffer.html#acfc9f4a1803ee1d5f2127b1d18dc06bf">geos::operation::buffer::BufferSubgraphGT()</a>.</p>
|
||
|
|
||
|
<p><div class="dynheader">
|
||
|
Here is the call graph for this function:</div>
|
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<div class="dyncontent">
|
||
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<div class="center"><iframe scrolling="no" frameborder="0" src="classgeos_1_1operation_1_1buffer_1_1BufferSubgraph_a90183bfeff847ea53ee3c4ffc4247f92_cgraph.svg" width="480" height="55"><p><b>This browser is not able to show SVG: try Firefox, Chrome, Safari, or Opera instead.</b></p></iframe>
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||
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</div>
|
||
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|
||
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</p>
|
||
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|
||
|
</div>
|
||
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|
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<a class="anchor" id="ac70a77fe64bdc345a1a104255a23e9e0"></a>
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<td class="memname"><a class="el" href="classgeos_1_1geom_1_1Envelope.html">geom::Envelope</a>* geos::operation::buffer::BufferSubgraph::getEnvelope </td>
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<p>Computes the envelope of the edges in the subgraph. The envelope is cached after being computed. </p>
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<dl class="section return"><dt>Returns</dt><dd>the envelope of the graph. </dd></dl>
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<td class="memname">std::vector< <a class="el" href="classgeos_1_1geomgraph_1_1Node.html">geomgraph::Node</a> * > * geos::operation::buffer::BufferSubgraph::getNodes </td>
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<p>Definition at line <a class="el" href="BufferSubgraph_8h_source.html#l00183">183</a> of file <a class="el" href="BufferSubgraph_8h_source.html">BufferSubgraph.h</a>.</p>
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<td class="memname"><a class="el" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a> * geos::operation::buffer::BufferSubgraph::getRightmostCoordinate </td>
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<p>Gets the rightmost coordinate in the edges of the subgraph. </p>
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<p>Definition at line <a class="el" href="BufferSubgraph_8h_source.html#l00177">177</a> of file <a class="el" href="BufferSubgraph_8h_source.html">BufferSubgraph.h</a>.</p>
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<h2 class="groupheader">Friends And Related Function Documentation</h2>
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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_1geomgraph_1_1DirectedEdge.html">geomgraph::DirectedEdge</a>*> geos::operation::buffer::BufferSubgraph::dirEdgeList</td>
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<p>Definition at line <a class="el" href="BufferSubgraph_8h_source.html#l00065">65</a> of file <a class="el" href="BufferSubgraph_8h_source.html">BufferSubgraph.h</a>.</p>
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<td class="memname"><a class="el" href="classgeos_1_1geom_1_1Envelope.html">geom::Envelope</a>* geos::operation::buffer::BufferSubgraph::env</td>
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<p>Definition at line <a class="el" href="BufferSubgraph_8h_source.html#l00071">71</a> of file <a class="el" href="BufferSubgraph_8h_source.html">BufferSubgraph.h</a>.</p>
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<td class="memname"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1RightmostEdgeFinder.html">RightmostEdgeFinder</a> geos::operation::buffer::BufferSubgraph::finder</td>
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<p>Definition at line <a class="el" href="BufferSubgraph_8h_source.html#l00063">63</a> of file <a class="el" href="BufferSubgraph_8h_source.html">BufferSubgraph.h</a>.</p>
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<td class="memname">std::vector<<a class="el" href="classgeos_1_1geomgraph_1_1Node.html">geomgraph::Node</a>*> geos::operation::buffer::BufferSubgraph::nodes</td>
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<p>Definition at line <a class="el" href="BufferSubgraph_8h_source.html#l00067">67</a> of file <a class="el" href="BufferSubgraph_8h_source.html">BufferSubgraph.h</a>.</p>
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<td class="memname"><a class="el" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a>* geos::operation::buffer::BufferSubgraph::rightMostCoord</td>
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<p>Definition at line <a class="el" href="BufferSubgraph_8h_source.html#l00069">69</a> of file <a class="el" href="BufferSubgraph_8h_source.html">BufferSubgraph.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="BufferSubgraph_8h_source.html">BufferSubgraph.h</a></li>
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