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 <span id="projectnumber">3.9.1dev</span>
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<li class="navelem"><a class="el" href="dir_d44c64559bbebec7f509842c48db8b23.html">include</a></li><li class="navelem"><a class="el" href="dir_0bc14b2fb119a11b6a0f32f4d350db61.html">geos</a></li><li class="navelem"><a class="el" href="dir_c01eee2f0195f7c921c8a1b68ed5e74c.html">index</a></li><li class="navelem"><a class="el" href="dir_e5230be7d14949f043691ce046034782.html">quadtree</a></li> </ul>
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<div class="title">Quadtree.h</div> </div>
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<a href="Quadtree_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) 2006 Refractions Research Inc.</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> <span class="comment"> *</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * Last port: index/quadtree/Quadtree.java rev. 1.16 (JTS-1.10)</span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> *</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> **********************************************************************/</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">#ifndef GEOS_IDX_QUADTREE_QUADTREE_H</span></div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor">#define GEOS_IDX_QUADTREE_QUADTREE_H</span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> </div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#include <<a class="code" href="export_8h.html">geos/export.h</a>></span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#include <<a class="code" href="Envelope_8h.html">geos/geom/Envelope.h</a>></span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#include <<a class="code" href="SpatialIndex_8h.html">geos/index/SpatialIndex.h</a>></span> <span class="comment">// for inheritance</span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include <<a class="code" href="quadtree_2Root_8h.html">geos/index/quadtree/Root.h</a>></span> <span class="comment">// for composition</span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> </div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#include <memory></span></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor">#include <vector></span></div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#include <string></span></div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> </div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#ifdef _MSC_VER</span></div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor">#pragma warning(push)</span></div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor">#pragma warning(disable: 4251) // warning C4251: needs to have dll-interface to be used by clients of class</span></div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor">#endif</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> <span class="comment">// Forward declarations</span></div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="keyword">namespace </span><a class="code" href="namespacegeos.html">geos</a> {</div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="keyword">namespace </span>index {</div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="keyword">namespace </span>quadtree {</div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment">// class Root;</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> }</div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span> }</div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span> </div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="keyword">namespace </span><a class="code" href="namespacegeos.html">geos</a> {</div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="keyword">namespace </span>index { <span class="comment">// geos::index</span></div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="keyword">namespace </span>quadtree { <span class="comment">// geos::index::quadtree</span></div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span> </div><div class="line"><a name="l00071"></a><span class="lineno"><a class="line" href="classgeos_1_1index_1_1quadtree_1_1Quadtree.html"> 71</a></span> <span class="keyword">class </span><a class="code" href="export_8h.html#ae36df939090171f6e9a28a8cb6254fea">GEOS_DLL</a> <a class="code" href="classgeos_1_1index_1_1quadtree_1_1Quadtree.html">Quadtree</a>: <span class="keyword">public</span> <a class="code" href="classgeos_1_1index_1_1SpatialIndex.html">SpatialIndex</a> {</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span> </div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="keyword">private</span>:</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span> </div><div class="line"><a name="l00075"></a><span class="lineno"><a class="line" href="classgeos_1_1index_1_1quadtree_1_1Quadtree.html#aef9905e39e63473c525ab6970b9a6d6f"> 75</a></span>  std::vector<std::unique_ptr<geom::Envelope>> <a class="code" href="classgeos_1_1index_1_1quadtree_1_1Quadtree.html#aef9905e39e63473c525ab6970b9a6d6f">newEnvelopes</a>;</div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span> </div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="keywordtype">void</span> collectStats(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Envelope.html">geom::Envelope</a>& itemEnv);</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span> </div><div class="line"><a name="l00079"></a><span class="lineno"><a class="line" href="classgeos_1_1index_1_1quadtree_1_1Quadtree.html#ac0082e2d5d3525f90c61e25bb6093489"> 79</a></span>  <a class="code" href="classgeos_1_1index_1_1quadtree_1_1Root.html">Root</a> <a class="code" href="classgeos_1_1index_1_1quadtree_1_1Quadtree.html#ac0082e2d5d3525f90c61e25bb6093489">root</a>;</div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span> </div><div class="line"><a name="l00092"></a><span class="lineno"><a class="line" href="classgeos_1_1index_1_1quadtree_1_1Quadtree.html#a1bf75998e2b71ee8350ad292f23758ff"> 92</a></span>  <span class="keywordtype">double</span> <a class="code" href="classgeos_1_1index_1_1quadtree_1_1Quadtree.html#a1bf75998e2b71ee8350ad292f23758ff">minExtent</a>;</div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span> </div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span> <span class="keyword">public</span>:</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="keyword">static</span> <a class="code" href="classgeos_1_1geom_1_1Envelope.html">geom::Envelope</a>* ensureExtent(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Envelope.html">geom::Envelope</a>* itemEnv,</div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="keywordtype">double</span> minExtent);</div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span> </div><div class="line"><a name="l00109"></a><span class="lineno"><a class="line" href="classgeos_1_1index_1_1quadtree_1_1Quadtree.html#ad2713f35495133940ba9726fa4a742d9"> 109</a></span>  <a class="code" href="classgeos_1_1index_1_1quadtree_1_1Quadtree.html#ad2713f35495133940ba9726fa4a742d9">Quadtree</a>()</div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  :</div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  root(),</div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  minExtent(1.0)</div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  {}</div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span> </div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  ~<a class="code" href="classgeos_1_1index_1_1quadtree_1_1Quadtree.html">Quadtree</a>() <span class="keyword">override</span> = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span> </div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keywordtype">int</span> depth();</div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span> </div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  <span class="keywordtype">size_t</span> size();</div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span> </div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  <span class="keywordtype">void</span> insert(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Envelope.html">geom::Envelope</a>* itemEnv, <span class="keywordtype">void</span>* item) <span class="keyword">override</span>;</div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span> </div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="keywordtype">void</span> query(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Envelope.html">geom::Envelope</a>* searchEnv, std::vector<void*>& ret) <span class="keyword">override</span>;</div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span> </div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span> </div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l00162"></a><span class="lineno"><a class="line" href="classgeos_1_1index_1_1quadtree_1_1Quadtree.html#a4f688e0830d53e6ec3ba397f606e9008"> 162</a></span>  <a class="code" href="classgeos_1_1index_1_1quadtree_1_1Quadtree.html#a4f688e0830d53e6ec3ba397f606e9008">query</a>(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Envelope.html">geom::Envelope</a>* searchEnv, <a class="code" href="classgeos_1_1index_1_1ItemVisitor.html">ItemVisitor</a>& visitor)<span class="keyword"> override</span></div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span> <span class="keyword"> </span>{</div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <span class="comment">/*</span></div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span> <span class="comment"> * the items that are matched are the items in quads which</span></div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span> <span class="comment"> * overlap the search envelope</span></div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span> <span class="comment"> */</span></div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  root.<a class="code" href="classgeos_1_1index_1_1quadtree_1_1NodeBase.html#a9911c1f0490448ddb228c6d7ba09dc4f">visit</a>(searchEnv, visitor);</div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  }</div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span> </div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  <span class="keywordtype">bool</span> <span class="keyword">remove</span>(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Envelope.html">geom::Envelope</a>* itemEnv, <span class="keywordtype">void</span>* item) <span class="keyword">override</span>;</div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span> </div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  std::vector<void*>* queryAll();</div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span> </div><div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  std::string toString() <span class="keyword">const</span>;</div><div class="line"><a name="l00184"></a><span class="lineno"> 184</span> </div><div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  <a class="code" href="classgeos_1_1index_1_1quadtree_1_1Quadtree.html">Quadtree</a>(<span class="keyword">const</span> <a class="code" href="classgeos_1_1index_1_1quadtree_1_1Quadtree.html">Quadtree</a>&) = <span class="keyword">delete</span>;</div><div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  <a class="code" href="classgeos_1_1index_1_1quadtree_1_1Quadtree.html">Quadtree</a>& operator=(<span class="keyword">const</span> <a class="code" href="classgeos_1_1index_1_1quadtree_1_1Quadtree.html">Quadtree</a>&) = <span class="keyword">delete</span>;</div><div class="line"><a name="l00191"></a><span class="lineno"> 191</span> </div><div class="line"><a name="l00192"></a><span class="lineno"> 192</span> };</div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span> </div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span> } <span class="comment">// namespace geos::index::quadtree</span></div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span> } <span class="comment">// namespace geos::index</span></div><div class="line"><a name="l00196"></a><span class="lineno"> 196</span> } <span class="comment">// namespace geos</span></div><div class="line"><a name="l00197"></a><span class="lineno"> 197</span> </div><div class="line"><a name="l00198"></a><span class="lineno"> 198</span> <span class="preprocessor">#ifdef _MSC_VER</span></div><div class="line"><a name="l00199"></a><span class="lineno"> 199</span> <span class="preprocessor">#pragma warning(pop)</span></div><div class="line"><a name="l00200"></a><span class="lineno"> 200</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00201"></a><span class="lineno"> 201</span> </div><div class="line"><a name="l00202"></a><span class="lineno"> 202</span> <span class="preprocessor">#endif // GEOS_IDX_QUADTREE_QUADTREE_H</span></div><div class="ttc" id="classgeos_1_1index_1_1quadtree_1_1Quadtree_html_aef9905e39e63473c525ab6970b9a6d6f"><div class="ttname"><a href="classgeos_1_1index_1_1quadtree_1_1Quadtree.html#aef9905e39e63473c525ab6970b9a6d6f">geos::index::quadtree::Quadtree::newEnvelopes</a></div><div class="ttdeci">std::vector< std::unique_ptr< geom::Envelope > > newEnvelopes</div><div class="ttdef"><b>Definition:</b> <a href="Quadtree_8h_source.html#l00075">Quadtree.h:75</a></div></div>
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<div class="ttc" id="classgeos_1_1geom_1_1Envelope_html"><div class="ttname"><a href="classgeos_1_1geom_1_1Envelope.html">geos::geom::Envelope</a></div><div class="ttdoc">An Envelope defines a rectangulare region of the 2D coordinate plane. </div><div class="ttdef"><b>Definition:</b> <a href="Envelope_8h_source.html#l00058">Envelope.h:58</a></div></div>
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<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="classgeos_1_1index_1_1quadtree_1_1Quadtree_html"><div class="ttname"><a href="classgeos_1_1index_1_1quadtree_1_1Quadtree.html">geos::index::quadtree::Quadtree</a></div><div class="ttdoc">A Quadtree is a spatial index structure for efficient querying of 2D rectangles. If other kinds of sp...</div><div class="ttdef"><b>Definition:</b> <a href="Quadtree_8h_source.html#l00071">Quadtree.h:71</a></div></div>
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<div class="ttc" id="classgeos_1_1index_1_1quadtree_1_1Root_html"><div class="ttname"><a href="classgeos_1_1index_1_1quadtree_1_1Root.html">geos::index::quadtree::Root</a></div><div class="ttdoc">QuadRoot is the root of a single Quadtree. It is centred at the origin, and does not have a defined e...</div><div class="ttdef"><b>Definition:</b> <a href="quadtree_2Root_8h_source.html#l00049">quadtree/Root.h:49</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="classgeos_1_1index_1_1quadtree_1_1NodeBase_html_a9911c1f0490448ddb228c6d7ba09dc4f"><div class="ttname"><a href="classgeos_1_1index_1_1quadtree_1_1NodeBase.html#a9911c1f0490448ddb228c6d7ba09dc4f">geos::index::quadtree::NodeBase::visit</a></div><div class="ttdeci">virtual void visit(const geom::Envelope *searchEnv, ItemVisitor &visitor)</div></div>
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<div class="ttc" id="classgeos_1_1index_1_1quadtree_1_1Quadtree_html_a4f688e0830d53e6ec3ba397f606e9008"><div class="ttname"><a href="classgeos_1_1index_1_1quadtree_1_1Quadtree.html#a4f688e0830d53e6ec3ba397f606e9008">geos::index::quadtree::Quadtree::query</a></div><div class="ttdeci">void query(const geom::Envelope *searchEnv, ItemVisitor &visitor) override</div><div class="ttdoc">Queries the tree and visits items which may lie in the given search envelope. </div><div class="ttdef"><b>Definition:</b> <a href="Quadtree_8h_source.html#l00162">Quadtree.h:162</a></div></div>
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<div class="ttc" id="classgeos_1_1index_1_1SpatialIndex_html"><div class="ttname"><a href="classgeos_1_1index_1_1SpatialIndex.html">geos::index::SpatialIndex</a></div><div class="ttdoc">Abstract class defines basic insertion and query operations supported by classes implementing spatial...</div><div class="ttdef"><b>Definition:</b> <a href="SpatialIndex_8h_source.html#l00047">SpatialIndex.h:47</a></div></div>
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<div class="ttc" id="classgeos_1_1index_1_1quadtree_1_1Quadtree_html_a1bf75998e2b71ee8350ad292f23758ff"><div class="ttname"><a href="classgeos_1_1index_1_1quadtree_1_1Quadtree.html#a1bf75998e2b71ee8350ad292f23758ff">geos::index::quadtree::Quadtree::minExtent</a></div><div class="ttdeci">double minExtent</div><div class="ttdef"><b>Definition:</b> <a href="Quadtree_8h_source.html#l00092">Quadtree.h:92</a></div></div>
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<div class="ttc" id="classgeos_1_1index_1_1ItemVisitor_html"><div class="ttname"><a href="classgeos_1_1index_1_1ItemVisitor.html">geos::index::ItemVisitor</a></div><div class="ttdoc">A visitor for items in an index. </div><div class="ttdef"><b>Definition:</b> <a href="ItemVisitor_8h_source.html#l00029">ItemVisitor.h:29</a></div></div>
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<div class="ttc" id="SpatialIndex_8h_html"><div class="ttname"><a href="SpatialIndex_8h.html">SpatialIndex.h</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="Envelope_8h_html"><div class="ttname"><a href="Envelope_8h.html">Envelope.h</a></div></div>
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<div class="ttc" id="classgeos_1_1index_1_1quadtree_1_1Quadtree_html_ac0082e2d5d3525f90c61e25bb6093489"><div class="ttname"><a href="classgeos_1_1index_1_1quadtree_1_1Quadtree.html#ac0082e2d5d3525f90c61e25bb6093489">geos::index::quadtree::Quadtree::root</a></div><div class="ttdeci">Root root</div><div class="ttdef"><b>Definition:</b> <a href="Quadtree_8h_source.html#l00079">Quadtree.h:79</a></div></div>
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<div class="ttc" id="classgeos_1_1index_1_1quadtree_1_1Quadtree_html_ad2713f35495133940ba9726fa4a742d9"><div class="ttname"><a href="classgeos_1_1index_1_1quadtree_1_1Quadtree.html#ad2713f35495133940ba9726fa4a742d9">geos::index::quadtree::Quadtree::Quadtree</a></div><div class="ttdeci">Quadtree()</div><div class="ttdoc">Constructs a Quadtree with zero items. </div><div class="ttdef"><b>Definition:</b> <a href="Quadtree_8h_source.html#l00109">Quadtree.h:109</a></div></div>
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<div class="ttc" id="quadtree_2Root_8h_html"><div class="ttname"><a href="quadtree_2Root_8h.html">Root.h</a></div></div>
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