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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/> <meta http-equiv="X-UA-Compatible" content="IE=9"/> <meta name="generator" content="Doxygen 1.8.5"/> <title>GEOS: Quadtree.h Source File</title> <link href="tabs.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="jquery.js"></script> <script type="text/javascript" src="dynsections.js"></script> <link href="doxygen.css" rel="stylesheet" type="text/css" /> </head> <body> <div id="top"><!-- do not remove this div, it is closed by doxygen! --> <div id="titlearea"> <table cellspacing="0" cellpadding="0"> <tbody> <tr style="height: 56px;"> <td style="padding-left: 0.5em;"> <div id="projectname">GEOS  <span id="projectnumber">3.5.0</span> </div> </td> </tr> </tbody> </table> </div> <!-- end header part --> <!-- Generated by 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class="header"> <div class="headertitle"> <div class="title">Quadtree.h</div> </div> </div><!--header--> <div class="contents"> <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"></span><span class="preprocessor">#define GEOS_IDX_QUADTREE_QUADTREE_H</span></div> <div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor"></span></div> <div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#include <geos/export.h></span></div> <div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#include <geos/index/SpatialIndex.h></span> <span class="comment">// for inheritance</span></div> <div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#include <geos/index/quadtree/Root.h></span> <span class="comment">// for composition</span></div> <div class="line"><a name="l00025"></a><span class="lineno"> 25</span> </div> <div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#include <vector></span></div> <div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#include <string></span></div> <div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div> <div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#ifdef _MSC_VER</span></div> <div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor"></span><span class="preprocessor">#pragma warning(push)</span></div> <div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor"></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="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div> <div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor"></span></div> <div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment">// Forward declarations</span></div> <div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="keyword">namespace </span>geos {</div> <div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  <span class="keyword">namespace </span>geom {</div> <div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <span class="keyword">class </span>Envelope;</div> <div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  }</div> <div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <span class="keyword">namespace </span>index {</div> <div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="keyword">namespace </span>quadtree {</div> <div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <span class="comment">// class Root; </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> </div> <div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="keyword">namespace </span>geos {</div> <div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="keyword">namespace </span>index { <span class="comment">// geos::index</span></div> <div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="keyword">namespace </span>quadtree { <span class="comment">// geos::index::quadtree</span></div> <div class="line"><a name="l00049"></a><span class="lineno"> 49</span> </div> <div class="line"><a name="l00072"></a><span class="lineno"><a class="line" href="classgeos_1_1index_1_1quadtree_1_1Quadtree.html"> 72</a></span> <span class="keyword">class </span>GEOS_DLL <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="l00073"></a><span class="lineno"> 73</span> </div> <div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="keyword">private</span>:</div> <div class="line"><a name="l00075"></a><span class="lineno"> 75</span> </div> <div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  std::vector<geom::Envelope *> newEnvelopes;</div> <div class="line"><a name="l00077"></a><span class="lineno"> 77</span> </div> <div class="line"><a name="l00078"></a><span class="lineno"> 78</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="l00079"></a><span class="lineno"> 79</span> </div> <div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <a class="code" href="classgeos_1_1index_1_1quadtree_1_1Root.html">Root</a> root;</div> <div class="line"><a name="l00081"></a><span class="lineno"> 81</span> </div> <div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keywordtype">double</span> minExtent;</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> <span class="keyword">public</span>:</div> <div class="line"><a name="l00103"></a><span class="lineno"> 103</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="l00104"></a><span class="lineno"> 104</span>  <span class="keywordtype">double</span> minExtent);</div> <div class="line"><a name="l00105"></a><span class="lineno"> 105</span> </div> <div class="line"><a name="l00110"></a><span class="lineno"><a class="line" href="classgeos_1_1index_1_1quadtree_1_1Quadtree.html#ad2713f35495133940ba9726fa4a742d9"> 110</a></span>  <a class="code" href="classgeos_1_1index_1_1quadtree_1_1Quadtree.html#ad2713f35495133940ba9726fa4a742d9">Quadtree</a>()</div> <div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  :</div> <div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  root(),</div> <div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  minExtent(1.0)</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> </div> <div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  ~<a class="code" href="classgeos_1_1index_1_1quadtree_1_1Quadtree.html">Quadtree</a>();</div> <div class="line"><a name="l00117"></a><span class="lineno"> 117</span> </div> <div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <span class="keywordtype">int</span> depth();</div> <div class="line"><a name="l00120"></a><span class="lineno"> 120</span> </div> <div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <span class="keywordtype">int</span> size();</div> <div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  </div> <div class="line"><a name="l00124"></a><span class="lineno"> 124</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);</div> <div class="line"><a name="l00125"></a><span class="lineno"> 125</span> </div> <div class="line"><a name="l00143"></a><span class="lineno"> 143</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);</div> <div class="line"><a name="l00144"></a><span class="lineno"> 144</span> </div> <div class="line"><a name="l00145"></a><span class="lineno"> 145</span> </div> <div class="line"><a name="l00162"></a><span class="lineno"><a class="line" href="classgeos_1_1index_1_1quadtree_1_1Quadtree.html#a1e753c1c2c00f9d05bdf7041ce95bbb0"> 162</a></span>  <span class="keywordtype">void</span> <a class="code" href="classgeos_1_1index_1_1quadtree_1_1Quadtree.html#a1e753c1c2c00f9d05bdf7041ce95bbb0">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)</div> <div class="line"><a name="l00163"></a><span class="lineno"> 163</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.visit(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);</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="l00185"></a><span class="lineno"> 185</span> };</div> <div class="line"><a name="l00186"></a><span class="lineno"> 186</span> </div> <div class="line"><a name="l00187"></a><span class="lineno"> 187</span> } <span class="comment">// namespace geos::index::quadtree</span></div> <div class="line"><a name="l00188"></a><span class="lineno"> 188</span> } <span class="comment">// namespace geos::index</span></div> <div class="line"><a name="l00189"></a><span class="lineno"> 189</span> } <span class="comment">// namespace geos</span></div> <div class="line"><a name="l00190"></a><span class="lineno"> 190</span> </div> <div class="line"><a name="l00191"></a><span class="lineno"> 191</span> <span class="preprocessor">#ifdef _MSC_VER</span></div> <div class="line"><a name="l00192"></a><span class="lineno"> 192</span> <span class="preprocessor"></span><span class="preprocessor">#pragma warning(pop)</span></div> <div class="line"><a name="l00193"></a><span class="lineno"> 193</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div> <div class="line"><a name="l00194"></a><span class="lineno"> 194</span> <span class="preprocessor"></span></div> <div class="line"><a name="l00195"></a><span class="lineno"> 195</span> <span class="preprocessor">#endif // GEOS_IDX_QUADTREE_QUADTREE_H</span></div> <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> Envelope.h:53</div></div> <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> Quadtree.h:72</div></div> <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> quadtree/Root.h:49</div></div> <div class="ttc" id="classgeos_1_1index_1_1quadtree_1_1Quadtree_html_a1e753c1c2c00f9d05bdf7041ce95bbb0"><div class="ttname"><a href="classgeos_1_1index_1_1quadtree_1_1Quadtree.html#a1e753c1c2c00f9d05bdf7041ce95bbb0">geos::index::quadtree::Quadtree::query</a></div><div class="ttdeci">void query(const geom::Envelope *searchEnv, ItemVisitor &visitor)</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> Quadtree.h:162</div></div> <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> SpatialIndex.h:47</div></div> <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> ItemVisitor.h:29</div></div> <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> Quadtree.h:110</div></div> </div><!-- fragment --></div><!-- contents --> <!-- start footer part --> <hr class="footer"/><address class="footer"><small> Generated by  <a href="http://www.doxygen.org/index.html"> <img class="footer" src="doxygen.png" alt="doxygen"/> </a> 1.8.5 </small></address> </body> </html>