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<h1>Quadtree.h</h1> </div>
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<div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/**********************************************************************</span>
<a name="l00002"></a>00002 <span class="comment"> * $Id: Quadtree.h 2556 2009-06-06 22:22:28Z strk $</span>
<a name="l00003"></a>00003 <span class="comment"> *</span>
<a name="l00004"></a>00004 <span class="comment"> * GEOS - Geometry Engine Open Source</span>
<a name="l00005"></a>00005 <span class="comment"> * http://geos.refractions.net</span>
<a name="l00006"></a>00006 <span class="comment"> *</span>
<a name="l00007"></a>00007 <span class="comment"> * Copyright (C) 2006 Refractions Research Inc.</span>
<a name="l00008"></a>00008 <span class="comment"> *</span>
<a name="l00009"></a>00009 <span class="comment"> * This is free software; you can redistribute and/or modify it under</span>
<a name="l00010"></a>00010 <span class="comment"> * the terms of the GNU Lesser General Public Licence as published</span>
<a name="l00011"></a>00011 <span class="comment"> * by the Free Software Foundation. </span>
<a name="l00012"></a>00012 <span class="comment"> * See the COPYING file for more information.</span>
<a name="l00013"></a>00013 <span class="comment"> *</span>
<a name="l00014"></a>00014 <span class="comment"> **********************************************************************</span>
<a name="l00015"></a>00015 <span class="comment"> *</span>
<a name="l00016"></a>00016 <span class="comment"> * Last port: index/quadtree/Quadtree.java rev. 1.16 (JTS-1.10)</span>
<a name="l00017"></a>00017 <span class="comment"> *</span>
<a name="l00018"></a>00018 <span class="comment"> **********************************************************************/</span>
<a name="l00019"></a>00019
<a name="l00020"></a>00020 <span class="preprocessor">#ifndef GEOS_IDX_QUADTREE_QUADTREE_H</span>
<a name="l00021"></a>00021 <span class="preprocessor"></span><span class="preprocessor">#define GEOS_IDX_QUADTREE_QUADTREE_H</span>
<a name="l00022"></a>00022 <span class="preprocessor"></span>
<a name="l00023"></a>00023 <span class="preprocessor">#include <geos/export.h></span>
<a name="l00024"></a>00024 <span class="preprocessor">#include <geos/index/SpatialIndex.h></span> <span class="comment">// for inheritance</span>
<a name="l00025"></a>00025 <span class="preprocessor">#include <geos/index/quadtree/Root.h></span> <span class="comment">// for composition</span>
<a name="l00026"></a>00026
<a name="l00027"></a>00027 <span class="preprocessor">#include <vector></span>
<a name="l00028"></a>00028 <span class="preprocessor">#include <string></span>
<a name="l00029"></a>00029
<a name="l00030"></a>00030 <span class="comment">// Forward declarations</span>
<a name="l00031"></a>00031 <span class="keyword">namespace </span>geos {
<a name="l00032"></a>00032 <span class="keyword">namespace </span>geom {
<a name="l00033"></a>00033 <span class="keyword">class </span>Envelope;
<a name="l00034"></a>00034 }
<a name="l00035"></a>00035 <span class="keyword">namespace </span>index {
<a name="l00036"></a>00036 <span class="keyword">namespace </span>quadtree {
<a name="l00037"></a>00037 <span class="comment">// class Root; </span>
<a name="l00038"></a>00038 }
<a name="l00039"></a>00039 }
<a name="l00040"></a>00040 }
<a name="l00041"></a>00041
<a name="l00042"></a>00042 <span class="keyword">namespace </span>geos {
<a name="l00043"></a>00043 <span class="keyword">namespace </span>index { <span class="comment">// geos::index</span>
<a name="l00044"></a>00044 <span class="keyword">namespace </span>quadtree { <span class="comment">// geos::index::quadtree</span>
<a name="l00045"></a>00045
<a name="l00068"></a><a class="code" href="classgeos_1_1index_1_1quadtree_1_1Quadtree.html">00068</a> <span class="keyword">class </span>GEOS_DLL <a class="code" href="classgeos_1_1index_1_1quadtree_1_1Quadtree.html" title="A Quadtree is a spatial index structure for efficient querying of 2D rectangles. If other kinds of sp...">Quadtree</a>: <span class="keyword">public</span> <a class="code" href="classgeos_1_1index_1_1SpatialIndex.html" title="Abstract class defines basic insertion and query operations supported by classes implementing spatial...">SpatialIndex</a> {
<a name="l00069"></a>00069
<a name="l00070"></a>00070 <span class="keyword">private</span>:
<a name="l00071"></a>00071
<a name="l00072"></a>00072 std::vector<geom::Envelope *> newEnvelopes;
<a name="l00073"></a>00073
<a name="l00074"></a>00074 <span class="keywordtype">void</span> collectStats(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Envelope.html" title="An Envelope defines a rectangulare region of the 2D coordinate plane.">geom::Envelope</a>& itemEnv);
<a name="l00075"></a>00075
<a name="l00076"></a>00076 <a class="code" href="classgeos_1_1index_1_1quadtree_1_1Root.html" title="QuadRoot is the root of a single Quadtree. It is centred at the origin, and does not have a defined e...">Root</a> root;
<a name="l00077"></a>00077
<a name="l00089"></a>00089 <span class="keywordtype">double</span> minExtent;
<a name="l00090"></a>00090
<a name="l00091"></a>00091 <span class="keyword">public</span>:
<a name="l00099"></a>00099 <span class="keyword">static</span> <a class="code" href="classgeos_1_1geom_1_1Envelope.html" title="An Envelope defines a rectangulare region of the 2D coordinate plane.">geom::Envelope</a>* ensureExtent(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Envelope.html" title="An Envelope defines a rectangulare region of the 2D coordinate plane.">geom::Envelope</a> *itemEnv,
<a name="l00100"></a>00100 <span class="keywordtype">double</span> minExtent);
<a name="l00101"></a>00101
<a name="l00106"></a><a class="code" href="classgeos_1_1index_1_1quadtree_1_1Quadtree.html#ad2713f35495133940ba9726fa4a742d9">00106</a> <a class="code" href="classgeos_1_1index_1_1quadtree_1_1Quadtree.html" title="A Quadtree is a spatial index structure for efficient querying of 2D rectangles. If other kinds of sp...">Quadtree</a>()
<a name="l00107"></a>00107 :
<a name="l00108"></a>00108 root(),
<a name="l00109"></a>00109 minExtent(1.0)
<a name="l00110"></a>00110 {}
<a name="l00111"></a>00111
<a name="l00112"></a>00112 ~<a class="code" href="classgeos_1_1index_1_1quadtree_1_1Quadtree.html" title="A Quadtree is a spatial index structure for efficient querying of 2D rectangles. If other kinds of sp...">Quadtree</a>();
<a name="l00113"></a>00113
<a name="l00115"></a>00115 <span class="keywordtype">int</span> depth();
<a name="l00116"></a>00116
<a name="l00118"></a>00118 <span class="keywordtype">int</span> size();
<a name="l00119"></a>00119
<a name="l00120"></a>00120 <span class="keywordtype">void</span> insert(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Envelope.html" title="An Envelope defines a rectangulare region of the 2D coordinate plane.">geom::Envelope</a> *itemEnv, <span class="keywordtype">void</span> *item);
<a name="l00121"></a>00121
<a name="l00139"></a>00139 <span class="keywordtype">void</span> query(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Envelope.html" title="An Envelope defines a rectangulare region of the 2D coordinate plane.">geom::Envelope</a> *searchEnv, std::vector<void*>& ret);
<a name="l00140"></a>00140
<a name="l00141"></a>00141
<a name="l00158"></a><a class="code" href="classgeos_1_1index_1_1quadtree_1_1Quadtree.html#a1e753c1c2c00f9d05bdf7041ce95bbb0">00158</a> <span class="keywordtype">void</span> query(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Envelope.html" title="An Envelope defines a rectangulare region of the 2D coordinate plane.">geom::Envelope</a> *searchEnv, <a class="code" href="classgeos_1_1index_1_1ItemVisitor.html" title="A visitor for items in an index.">ItemVisitor</a>& visitor)
<a name="l00159"></a>00159 {
<a name="l00160"></a>00160 <span class="comment">/*</span>
<a name="l00161"></a>00161 <span class="comment"> * the items that are matched are the items in quads which</span>
<a name="l00162"></a>00162 <span class="comment"> * overlap the search envelope</span>
<a name="l00163"></a>00163 <span class="comment"> */</span>
<a name="l00164"></a>00164 root.visit(searchEnv, visitor);
<a name="l00165"></a>00165 }
<a name="l00166"></a>00166
<a name="l00174"></a>00174 <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" title="An Envelope defines a rectangulare region of the 2D coordinate plane.">geom::Envelope</a>* itemEnv, <span class="keywordtype">void</span>* item);
<a name="l00175"></a>00175
<a name="l00177"></a>00177 std::vector<void*>* queryAll();
<a name="l00178"></a>00178
<a name="l00179"></a>00179 std::string toString() <span class="keyword">const</span>;
<a name="l00180"></a>00180
<a name="l00181"></a>00181 };
<a name="l00182"></a>00182
<a name="l00183"></a>00183
<a name="l00184"></a>00184 } <span class="comment">// namespace geos::index::quadtree</span>
<a name="l00185"></a>00185 } <span class="comment">// namespace geos::index</span>
<a name="l00186"></a>00186 } <span class="comment">// namespace geos</span>
<a name="l00187"></a>00187
<a name="l00188"></a>00188 <span class="preprocessor">#endif // GEOS_IDX_QUADTREE_QUADTREE_H</span>
<a name="l00189"></a>00189 <span class="preprocessor"></span>
<a name="l00190"></a>00190 <span class="comment">/**********************************************************************</span>
<a name="l00191"></a>00191 <span class="comment"> * $Log$</span>
<a name="l00192"></a>00192 <span class="comment"> * Revision 1.2 2006/04/03 08:29:30 strk</span>
<a name="l00193"></a>00193 <span class="comment"> * Added port info, cleaned up log message, minor assertion checking.</span>
<a name="l00194"></a>00194 <span class="comment"> *</span>
<a name="l00195"></a>00195 <span class="comment"> * Revision 1.1 2006/03/22 12:22:50 strk</span>
<a name="l00196"></a>00196 <span class="comment"> * indexQuadtree.h split</span>
<a name="l00197"></a>00197 <span class="comment"> *</span>
<a name="l00198"></a>00198 <span class="comment"> **********************************************************************/</span>
<a name="l00199"></a>00199
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