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<h1>STRtree.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: STRtree.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/strtree/STRtree.java rev. 1.11</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_INDEX_STRTREE_STRTREE_H</span>
<a name="l00021"></a>00021 <span class="preprocessor"></span><span class="preprocessor">#define GEOS_INDEX_STRTREE_STRTREE_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
<a name="l00025"></a>00025 <span class="preprocessor">#include <geos/index/strtree/AbstractSTRtree.h></span> <span class="comment">// for inheritance</span>
<a name="l00026"></a>00026 <span class="preprocessor">#include <geos/index/SpatialIndex.h></span> <span class="comment">// for inheritance</span>
<a name="l00027"></a>00027 <span class="preprocessor">#include <geos/geom/Envelope.h></span> <span class="comment">// for inlines</span>
<a name="l00028"></a>00028
<a name="l00029"></a>00029 <span class="preprocessor">#include <vector></span>
<a name="l00030"></a>00030
<a name="l00031"></a>00031 <span class="comment">// Forward declarations</span>
<a name="l00032"></a>00032 <span class="keyword">namespace </span>geos {
<a name="l00033"></a>00033 <span class="keyword">namespace </span>index {
<a name="l00034"></a>00034 <span class="keyword">namespace </span>strtree {
<a name="l00035"></a>00035 <span class="keyword">class </span>Boundable;
<a name="l00036"></a>00036 }
<a name="l00037"></a>00037 }
<a name="l00038"></a>00038 }
<a name="l00039"></a>00039
<a name="l00040"></a>00040
<a name="l00041"></a>00041 <span class="keyword">namespace </span>geos {
<a name="l00042"></a>00042 <span class="keyword">namespace </span>index { <span class="comment">// geos::index</span>
<a name="l00043"></a>00043 <span class="keyword">namespace </span>strtree { <span class="comment">// geos::index::strtree</span>
<a name="l00044"></a>00044
<a name="l00060"></a><a class="code" href="classgeos_1_1index_1_1strtree_1_1STRtree.html">00060</a> <span class="keyword">class </span>GEOS_DLL <a class="code" href="classgeos_1_1index_1_1strtree_1_1STRtree.html" title="A query-only R-tree created using the Sort-Tile-Recursive (STR) algorithm. For two-dimensional spatia...">STRtree</a>: <span class="keyword">public</span> <a class="code" href="classgeos_1_1index_1_1strtree_1_1AbstractSTRtree.html" title="Base class for STRtree and SIRtree.">AbstractSTRtree</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="l00061"></a>00061 {
<a name="l00062"></a>00062 <span class="keyword">using</span> AbstractSTRtree::insert;
<a name="l00063"></a>00063 <span class="keyword">using</span> AbstractSTRtree::query;
<a name="l00064"></a>00064
<a name="l00065"></a>00065 <span class="keyword">private</span>:
<a name="l00066"></a>00066 <span class="keyword">class </span>STRIntersectsOp: <span class="keyword">public</span> <a class="code" href="classgeos_1_1index_1_1strtree_1_1AbstractSTRtree.html" title="Base class for STRtree and SIRtree.">AbstractSTRtree</a>::IntersectsOp {
<a name="l00067"></a>00067 <span class="keyword">public</span>:
<a name="l00068"></a>00068 <span class="keywordtype">bool</span> intersects(<span class="keyword">const</span> <span class="keywordtype">void</span>* aBounds, <span class="keyword">const</span> <span class="keywordtype">void</span>* bBounds);
<a name="l00069"></a>00069 };
<a name="l00070"></a>00070
<a name="l00078"></a>00078 std::auto_ptr<BoundableList> createParentBoundables(<a class="code" href="namespacegeos_1_1index_1_1strtree.html#add68ce1c4a60ff15e78bb77f47605dbe" title="A list of boundables. TODO: use a list.">BoundableList</a>* childBoundables, <span class="keywordtype">int</span> newLevel);
<a name="l00079"></a>00079
<a name="l00080"></a>00080 std::auto_ptr<BoundableList> createParentBoundablesFromVerticalSlices(std::vector<BoundableList*>* verticalSlices, <span class="keywordtype">int</span> newLevel);
<a name="l00081"></a>00081
<a name="l00082"></a>00082 STRIntersectsOp intersectsOp;
<a name="l00083"></a>00083
<a name="l00084"></a>00084 std::auto_ptr<BoundableList> sortBoundables(<span class="keyword">const</span> <a class="code" href="namespacegeos_1_1index_1_1strtree.html#add68ce1c4a60ff15e78bb77f47605dbe" title="A list of boundables. TODO: use a list.">BoundableList</a>* input);
<a name="l00085"></a>00085
<a name="l00086"></a>00086 std::auto_ptr<BoundableList> createParentBoundablesFromVerticalSlice(
<a name="l00087"></a>00087 <a class="code" href="namespacegeos_1_1index_1_1strtree.html#add68ce1c4a60ff15e78bb77f47605dbe" title="A list of boundables. TODO: use a list.">BoundableList</a>* childBoundables,
<a name="l00088"></a>00088 <span class="keywordtype">int</span> newLevel);
<a name="l00089"></a>00089
<a name="l00095"></a>00095 std::vector<BoundableList*>* verticalSlices(
<a name="l00096"></a>00096 <a class="code" href="namespacegeos_1_1index_1_1strtree.html#add68ce1c4a60ff15e78bb77f47605dbe" title="A list of boundables. TODO: use a list.">BoundableList</a>* childBoundables,
<a name="l00097"></a>00097 <span class="keywordtype">size_t</span> sliceCount);
<a name="l00098"></a>00098
<a name="l00099"></a>00099
<a name="l00100"></a>00100 <span class="keyword">protected</span>:
<a name="l00101"></a>00101
<a name="l00102"></a>00102 <a class="code" href="classgeos_1_1index_1_1strtree_1_1AbstractNode.html" title="A node of the STR tree.">AbstractNode</a>* createNode(<span class="keywordtype">int</span> level);
<a name="l00103"></a>00103
<a name="l00104"></a>00104 IntersectsOp* getIntersectsOp() {
<a name="l00105"></a>00105 <span class="keywordflow">return</span> &intersectsOp;
<a name="l00106"></a>00106 };
<a name="l00107"></a>00107
<a name="l00108"></a>00108 <span class="keyword">public</span>:
<a name="l00109"></a>00109
<a name="l00110"></a>00110 ~<a class="code" href="classgeos_1_1index_1_1strtree_1_1STRtree.html" title="A query-only R-tree created using the Sort-Tile-Recursive (STR) algorithm. For two-dimensional spatia...">STRtree</a>();
<a name="l00111"></a>00111
<a name="l00116"></a>00116 <a class="code" href="classgeos_1_1index_1_1strtree_1_1STRtree.html" title="A query-only R-tree created using the Sort-Tile-Recursive (STR) algorithm. For two-dimensional spatia...">STRtree</a>(<span class="keywordtype">size_t</span> nodeCapacity=10);
<a name="l00117"></a>00117
<a name="l00118"></a>00118 <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="l00119"></a>00119
<a name="l00120"></a>00120 <span class="comment">//static double centreX(const geom::Envelope *e);</span>
<a name="l00121"></a>00121
<a name="l00122"></a>00122 <span class="keyword">static</span> <span class="keywordtype">double</span> avg(<span class="keywordtype">double</span> a, <span class="keywordtype">double</span> b) {
<a name="l00123"></a>00123 <span class="keywordflow">return</span> (a + b) / 2.0;
<a name="l00124"></a>00124 }
<a name="l00125"></a>00125
<a name="l00126"></a>00126 <span class="keyword">static</span> <span class="keywordtype">double</span> centreY(<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> *e) {
<a name="l00127"></a>00127 <span class="keywordflow">return</span> STRtree::avg(e-><a class="code" href="classgeos_1_1geom_1_1Envelope.html#ae8f01c5ddb0eb2aaeff5510eaebee3ab">getMinY</a>(), e-><a class="code" href="classgeos_1_1geom_1_1Envelope.html#afe346be1da764bd27d2769a64ed99fa6">getMaxY</a>());
<a name="l00128"></a>00128 }
<a name="l00129"></a>00129
<a name="l00130"></a><a class="code" href="classgeos_1_1index_1_1strtree_1_1STRtree.html#ada94f2eeb8cc1edcdfa346e04bf0f977">00130</a> <span class="keywordtype">void</span> <a class="code" href="classgeos_1_1index_1_1strtree_1_1STRtree.html#ada94f2eeb8cc1edcdfa346e04bf0f977" title="Queries the index for all items whose extents intersect the given search Envelope.">query</a>(<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*>& matches) {
<a name="l00131"></a>00131 <a class="code" href="classgeos_1_1index_1_1strtree_1_1AbstractSTRtree.html#a668b51c0354bee9934ebeca13f68d8b1" title="Also builds the tree, if necessary.">AbstractSTRtree::query</a>(searchEnv, matches);
<a name="l00132"></a>00132 }
<a name="l00133"></a>00133
<a name="l00134"></a><a class="code" href="classgeos_1_1index_1_1strtree_1_1STRtree.html#a4a2fc9d3c2c03577bb4c5b3897c55188">00134</a> <span class="keywordtype">void</span> <a class="code" href="classgeos_1_1index_1_1strtree_1_1STRtree.html#a4a2fc9d3c2c03577bb4c5b3897c55188" title="Queries the index for all items whose extents intersect the given search Envelope and applies an Item...">query</a>(<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="l00135"></a>00135 <span class="keywordflow">return</span> <a class="code" href="classgeos_1_1index_1_1strtree_1_1AbstractSTRtree.html#a668b51c0354bee9934ebeca13f68d8b1" title="Also builds the tree, if necessary.">AbstractSTRtree::query</a>(searchEnv, visitor);
<a name="l00136"></a>00136 }
<a name="l00137"></a>00137
<a name="l00138"></a><a class="code" href="classgeos_1_1index_1_1strtree_1_1STRtree.html#aecffa6cb4487b6af60f19e7a0ee71e05">00138</a> <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="l00139"></a>00139 <span class="keywordflow">return</span> AbstractSTRtree::remove(itemEnv, item);
<a name="l00140"></a>00140 }
<a name="l00141"></a>00141 };
<a name="l00142"></a>00142
<a name="l00143"></a>00143 } <span class="comment">// namespace geos::index::strtree</span>
<a name="l00144"></a>00144 } <span class="comment">// namespace geos::index</span>
<a name="l00145"></a>00145 } <span class="comment">// namespace geos</span>
<a name="l00146"></a>00146
<a name="l00147"></a>00147 <span class="preprocessor">#endif // GEOS_INDEX_STRTREE_STRTREE_H</span>
<a name="l00148"></a>00148 <span class="preprocessor"></span>
<a name="l00149"></a>00149 <span class="comment">/**********************************************************************</span>
<a name="l00150"></a>00150 <span class="comment"> * $Log$</span>
<a name="l00151"></a>00151 <span class="comment"> * Revision 1.3 2006/06/12 10:49:43 strk</span>
<a name="l00152"></a>00152 <span class="comment"> * unsigned int => size_t</span>
<a name="l00153"></a>00153 <span class="comment"> *</span>
<a name="l00154"></a>00154 <span class="comment"> * Revision 1.2 2006/04/03 08:43:09 strk</span>
<a name="l00155"></a>00155 <span class="comment"> * Added port info, minor cleanups</span>
<a name="l00156"></a>00156 <span class="comment"> *</span>
<a name="l00157"></a>00157 <span class="comment"> * Revision 1.1 2006/03/21 10:47:34 strk</span>
<a name="l00158"></a>00158 <span class="comment"> * indexStrtree.h split</span>
<a name="l00159"></a>00159 <span class="comment"> *</span>
<a name="l00160"></a>00160 <span class="comment"> **********************************************************************/</span>
<a name="l00161"></a>00161
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