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<div class="title">g/MaximalEdgeRing.h</div> </div>
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<a href="g_2MaximalEdgeRing_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/**********************************************************************</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> *</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * GEOS - Geometry Engine Open Source</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * http://geos.osgeo.org</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> *</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * Copyright (C) 2020 Paul Ramsey <pramsey@cleverelephant.ca></span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> *</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * This is free software; you can redistribute and/or modify it under</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * the terms of the GNU Lesser General Public Licence as published</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> * by the Free Software Foundation.</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * See the COPYING file for more information.</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> *</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> **********************************************************************/</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> </div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor">#pragma once</span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> </div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#include <<a class="code" href="OverlayEdgeRing_8h.html">geos/operation/overlayng/OverlayEdgeRing.h</a>></span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> </div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="preprocessor">#include <vector></span></div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor">#include <memory></span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#include <<a class="code" href="export_8h.html">geos/export.h</a>></span></div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> </div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment">// Forward declarations</span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="keyword">namespace </span><a class="code" href="namespacegeos.html">geos</a> {</div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="keyword">namespace </span>geom {</div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="keyword">class </span>Coordinate;</div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="keyword">class </span>CoordinateArray;</div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="keyword">class </span>GeometryFactory;</div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> }</div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="keyword">namespace </span>operation {</div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="keyword">namespace </span>overlayng {</div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="keyword">class </span>OverlayEdge;</div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="keyword">class </span>EdgeRing;</div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> }</div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> }</div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> }</div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> </div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="keyword">namespace </span><a class="code" href="namespacegeos.html">geos</a> { <span class="comment">// geos.</span></div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="keyword">namespace </span>operation { <span class="comment">// geos.operation</span></div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="keyword">namespace </span>overlayng { <span class="comment">// geos.operation.overlayng</span></div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span> </div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="keyword">using namespace </span><a class="code" href="namespacegeos_1_1geom.html">geos::geom</a>;</div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span> </div><div class="line"><a name="l00044"></a><span class="lineno"><a class="line" href="classgeos_1_1operation_1_1overlayng_1_1MaximalEdgeRing.html"> 44</a></span> <span class="keyword">class </span><a class="code" href="export_8h.html#ae36df939090171f6e9a28a8cb6254fea">GEOS_DLL</a> <a class="code" href="classgeos_1_1operation_1_1overlayng_1_1MaximalEdgeRing.html">MaximalEdgeRing</a> {</div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span> </div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="keyword">private</span>:</div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span> </div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="comment">// Constants</span></div><div class="line"><a name="l00049"></a><span class="lineno"><a class="line" href="classgeos_1_1operation_1_1overlayng_1_1MaximalEdgeRing.html#a2b928039561b115101c8fda501e487b5"> 49</a></span>  <span class="keyword">static</span> constexpr <span class="keywordtype">int</span> STATE_FIND_INCOMING = 1;</div><div class="line"><a name="l00050"></a><span class="lineno"><a class="line" href="classgeos_1_1operation_1_1overlayng_1_1MaximalEdgeRing.html#a35bab4135f6d17f16a0e70766054ebbe"> 50</a></span>  <span class="keyword">static</span> constexpr <span class="keywordtype">int</span> STATE_LINK_OUTGOING = 2;</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span> </div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="comment">// Members</span></div><div class="line"><a name="l00053"></a><span class="lineno"><a class="line" href="classgeos_1_1operation_1_1overlayng_1_1MaximalEdgeRing.html#a324ec251ae7f463c6c7cf3973798249d"> 53</a></span>  <a class="code" href="classgeos_1_1operation_1_1overlayng_1_1OverlayEdge.html">OverlayEdge</a>* <a class="code" href="classgeos_1_1operation_1_1overlayng_1_1MaximalEdgeRing.html#a324ec251ae7f463c6c7cf3973798249d">startEdge</a>;</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span> </div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="comment">// Methods</span></div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keywordtype">void</span> attachEdges(<a class="code" href="classgeos_1_1operation_1_1overlayng_1_1OverlayEdge.html">OverlayEdge</a>* startEdge);</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keywordtype">void</span> linkMinimalRings();</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span> </div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="keyword">static</span> <span class="keywordtype">void</span> linkMinRingEdgesAtNode(<a class="code" href="classgeos_1_1operation_1_1overlayng_1_1OverlayEdge.html">OverlayEdge</a>* nodeEdge, <a class="code" href="classgeos_1_1operation_1_1overlayng_1_1MaximalEdgeRing.html">MaximalEdgeRing</a>* maxRing);</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span> </div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keyword">static</span> <span class="keywordtype">bool</span> isAlreadyLinked(<a class="code" href="classgeos_1_1operation_1_1overlayng_1_1OverlayEdge.html">OverlayEdge</a>* edge, <a class="code" href="classgeos_1_1operation_1_1overlayng_1_1MaximalEdgeRing.html">MaximalEdgeRing</a>* maxRing);</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span> </div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keyword">static</span> <a class="code" href="classgeos_1_1operation_1_1overlayng_1_1OverlayEdge.html">OverlayEdge</a>* selectMaxOutEdge(<a class="code" href="classgeos_1_1operation_1_1overlayng_1_1OverlayEdge.html">OverlayEdge</a>* currOut, <a class="code" href="classgeos_1_1operation_1_1overlayng_1_1MaximalEdgeRing.html">MaximalEdgeRing</a>* maxEdgeRing);</div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="keyword">static</span> <a class="code" href="classgeos_1_1operation_1_1overlayng_1_1OverlayEdge.html">OverlayEdge</a>* linkMaxInEdge(<a class="code" href="classgeos_1_1operation_1_1overlayng_1_1OverlayEdge.html">OverlayEdge</a>* currOut, <a class="code" href="classgeos_1_1operation_1_1overlayng_1_1OverlayEdge.html">OverlayEdge</a>* currMaxRingOut, <a class="code" href="classgeos_1_1operation_1_1overlayng_1_1MaximalEdgeRing.html">MaximalEdgeRing</a>* maxEdgeRing);</div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span> </div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span> </div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="keyword">public</span>:</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span> </div><div class="line"><a name="l00092"></a><span class="lineno"><a class="line" href="classgeos_1_1operation_1_1overlayng_1_1MaximalEdgeRing.html#ad42165d43fc1c1fd10578d49447d7f4e"> 92</a></span>  <a class="code" href="classgeos_1_1operation_1_1overlayng_1_1MaximalEdgeRing.html#ad42165d43fc1c1fd10578d49447d7f4e">MaximalEdgeRing</a>(<a class="code" href="classgeos_1_1operation_1_1overlayng_1_1OverlayEdge.html">OverlayEdge</a>* e)</div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  : startEdge(e)</div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  {</div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  attachEdges(e);</div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  };</div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span> </div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  std::vector<std::unique_ptr<OverlayEdgeRing>> buildMinimalRings(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1GeometryFactory.html">GeometryFactory</a>* geometryFactory);</div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span> </div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="keyword">static</span> <span class="keywordtype">void</span> linkResultAreaMaxRingAtNode(<a class="code" href="classgeos_1_1operation_1_1overlayng_1_1OverlayEdge.html">OverlayEdge</a>* nodeEdge);</div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span> </div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keyword">friend</span> std::ostream& <a class="code" href="namespacegeos_1_1geom.html#a2031e0143940407ca589d3216cf0eb06">operator<<</a>(std::ostream& os, <span class="keyword">const</span> <a class="code" href="classgeos_1_1operation_1_1overlayng_1_1MaximalEdgeRing.html">MaximalEdgeRing</a>& mer);</div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span> </div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span> };</div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span> </div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span> </div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span> } <span class="comment">// namespace geos.operation.overlayng</span></div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span> } <span class="comment">// namespace geos.operation</span></div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span> } <span class="comment">// namespace geos</span></div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span> </div><div class="ttc" id="export_8h_html_ae36df939090171f6e9a28a8cb6254fea"><div class="ttname"><a href="export_8h.html#ae36df939090171f6e9a28a8cb6254fea">GEOS_DLL</a></div><div class="ttdeci">#define GEOS_DLL</div><div class="ttdef"><b>Definition:</b> <a href="export_8h_source.html#l00028">export.h:28</a></div></div>
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<div class="ttc" id="export_8h_html"><div class="ttname"><a href="export_8h.html">export.h</a></div></div>
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<div class="ttc" id="namespacegeos_1_1geom_html"><div class="ttname"><a href="namespacegeos_1_1geom.html">geos::geom</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexedNestedRingTester_8h_source.html#l00027">IndexedNestedRingTester.h:27</a></div></div>
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<div class="ttc" id="OverlayEdgeRing_8h_html"><div class="ttname"><a href="OverlayEdgeRing_8h.html">OverlayEdgeRing.h</a></div></div>
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<div class="ttc" id="namespacegeos_1_1geom_html_a2031e0143940407ca589d3216cf0eb06"><div class="ttname"><a href="namespacegeos_1_1geom.html#a2031e0143940407ca589d3216cf0eb06">geos::geom::operator<<</a></div><div class="ttdeci">std::ostream & operator<<(std::ostream &os, const Coordinate &c)</div><div class="ttdoc">Output function. </div></div>
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<div class="ttc" id="classgeos_1_1geom_1_1GeometryFactory_html"><div class="ttname"><a href="classgeos_1_1geom_1_1GeometryFactory.html">geos::geom::GeometryFactory</a></div><div class="ttdoc">Supplies a set of utility methods for building Geometry objects from CoordinateSequence or other Geom...</div><div class="ttdef"><b>Definition:</b> <a href="GeometryFactory_8h_source.html#l00068">GeometryFactory.h:68</a></div></div>
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<div class="ttc" id="namespacegeos_html"><div class="ttname"><a href="namespacegeos.html">geos</a></div><div class="ttdoc">Basic namespace for all GEOS functionalities. </div><div class="ttdef"><b>Definition:</b> <a href="IndexedNestedRingTester_8h_source.html#l00026">IndexedNestedRingTester.h:26</a></div></div>
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<div class="ttc" id="classgeos_1_1operation_1_1overlayng_1_1MaximalEdgeRing_html_ad42165d43fc1c1fd10578d49447d7f4e"><div class="ttname"><a href="classgeos_1_1operation_1_1overlayng_1_1MaximalEdgeRing.html#ad42165d43fc1c1fd10578d49447d7f4e">geos::operation::overlayng::MaximalEdgeRing::MaximalEdgeRing</a></div><div class="ttdeci">MaximalEdgeRing(OverlayEdge *e)</div><div class="ttdef"><b>Definition:</b> <a href="g_2MaximalEdgeRing_8h_source.html#l00092">g/MaximalEdgeRing.h:92</a></div></div>
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<div class="ttc" id="classgeos_1_1operation_1_1overlayng_1_1OverlayEdge_html"><div class="ttname"><a href="classgeos_1_1operation_1_1overlayng_1_1OverlayEdge.html">geos::operation::overlayng::OverlayEdge</a></div><div class="ttdef"><b>Definition:</b> <a href="OverlayEdge_8h_source.html#l00049">OverlayEdge.h:49</a></div></div>
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<div class="ttc" id="classgeos_1_1operation_1_1overlayng_1_1MaximalEdgeRing_html_a324ec251ae7f463c6c7cf3973798249d"><div class="ttname"><a href="classgeos_1_1operation_1_1overlayng_1_1MaximalEdgeRing.html#a324ec251ae7f463c6c7cf3973798249d">geos::operation::overlayng::MaximalEdgeRing::startEdge</a></div><div class="ttdeci">OverlayEdge * startEdge</div><div class="ttdef"><b>Definition:</b> <a href="g_2MaximalEdgeRing_8h_source.html#l00053">g/MaximalEdgeRing.h:53</a></div></div>
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<div class="ttc" id="classgeos_1_1operation_1_1overlayng_1_1MaximalEdgeRing_html"><div class="ttname"><a href="classgeos_1_1operation_1_1overlayng_1_1MaximalEdgeRing.html">geos::operation::overlayng::MaximalEdgeRing</a></div><div class="ttdef"><b>Definition:</b> <a href="g_2MaximalEdgeRing_8h_source.html#l00044">g/MaximalEdgeRing.h:44</a></div></div>
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