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<h1>CascadedPolygonUnion.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: CascadedPolygonUnion.h 2953 2010-03-26 12:03:45Z mloskot $</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: operation/union/CascadedPolygonUnion.java rev 1.10 (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_OP_UNION_CASCADEDPOLYGONUNION_H</span>
<a name="l00021"></a>00021 <span class="preprocessor"></span><span class="preprocessor">#define GEOS_OP_UNION_CASCADEDPOLYGONUNION_H</span>
<a name="l00022"></a>00022 <span class="preprocessor"></span><span class="preprocessor">#include <geos/export.h></span>
<a name="l00023"></a>00023
<a name="l00024"></a>00024 <span class="preprocessor">#include <vector></span>
<a name="l00025"></a>00025 <span class="preprocessor">#include <algorithm></span>
<a name="l00026"></a>00026
<a name="l00027"></a>00027 <span class="comment">// Forward declarations</span>
<a name="l00028"></a>00028 <span class="keyword">namespace </span>geos {
<a name="l00029"></a>00029 <span class="keyword">namespace </span>geom {
<a name="l00030"></a>00030 <span class="keyword">class </span>GeometryFactory;
<a name="l00031"></a>00031 <span class="keyword">class </span>Geometry;
<a name="l00032"></a>00032 <span class="keyword">class </span>Polygon;
<a name="l00033"></a>00033 <span class="keyword">class </span>MultiPolygon;
<a name="l00034"></a>00034 <span class="keyword">class </span>Envelope;
<a name="l00035"></a>00035 }
<a name="l00036"></a>00036 <span class="keyword">namespace </span>index {
<a name="l00037"></a>00037 <span class="keyword">namespace </span>strtree {
<a name="l00038"></a>00038 <span class="keyword">class </span>ItemsList;
<a name="l00039"></a>00039 }
<a name="l00040"></a>00040 }
<a name="l00041"></a>00041 }
<a name="l00042"></a>00042
<a name="l00043"></a>00043 <span class="keyword">namespace </span>geos {
<a name="l00044"></a>00044 <span class="keyword">namespace </span>operation { <span class="comment">// geos::operation</span>
<a name="l00045"></a>00045 <span class="keyword">namespace </span>geounion { <span class="comment">// geos::operation::geounion</span>
<a name="l00046"></a>00046
<a name="l00051"></a><a class="code" href="classgeos_1_1operation_1_1geounion_1_1GeometryListHolder.html">00051</a> <span class="keyword">class </span><a class="code" href="classgeos_1_1operation_1_1geounion_1_1GeometryListHolder.html" title="Helper class holding Geometries, part of which are held by reference others are held exclusively...">GeometryListHolder</a> : <span class="keyword">public</span> std::vector<geom::Geometry*>
<a name="l00052"></a>00052 {
<a name="l00053"></a>00053 <span class="keyword">private</span>:
<a name="l00054"></a>00054 <span class="keyword">typedef</span> std::vector<geom::Geometry*> base_type;
<a name="l00055"></a>00055
<a name="l00056"></a>00056 <span class="keyword">public</span>:
<a name="l00057"></a>00057 <a class="code" href="classgeos_1_1operation_1_1geounion_1_1GeometryListHolder.html" title="Helper class holding Geometries, part of which are held by reference others are held exclusively...">GeometryListHolder</a>() {}
<a name="l00058"></a>00058 ~<a class="code" href="classgeos_1_1operation_1_1geounion_1_1GeometryListHolder.html" title="Helper class holding Geometries, part of which are held by reference others are held exclusively...">GeometryListHolder</a>()
<a name="l00059"></a>00059 {
<a name="l00060"></a>00060 std::for_each(ownedItems.begin(), ownedItems.end(),
<a name="l00061"></a>00061 &GeometryListHolder::deleteItem);
<a name="l00062"></a>00062 }
<a name="l00063"></a>00063
<a name="l00064"></a>00064 <span class="comment">// items need to be deleted in the end</span>
<a name="l00065"></a>00065 <span class="keywordtype">void</span> push_back_owned(<a class="code" href="classgeos_1_1geom_1_1Geometry.html" title="Basic implementation of Geometry, constructed and destructed by GeometryFactory.">geom::Geometry</a>* item)
<a name="l00066"></a>00066 {
<a name="l00067"></a>00067 this->base_type::push_back(item);
<a name="l00068"></a>00068 ownedItems.push_back(item);
<a name="l00069"></a>00069 }
<a name="l00070"></a>00070
<a name="l00071"></a>00071 <a class="code" href="classgeos_1_1geom_1_1Geometry.html" title="Basic implementation of Geometry, constructed and destructed by GeometryFactory.">geom::Geometry</a>* getGeometry(std::size_t index)
<a name="l00072"></a>00072 {
<a name="l00073"></a>00073 <span class="keywordflow">if</span> (index >= this->base_type::size())
<a name="l00074"></a>00074 <span class="keywordflow">return</span> NULL;
<a name="l00075"></a>00075 <span class="keywordflow">return</span> (*<span class="keyword">this</span>)[index];
<a name="l00076"></a>00076 }
<a name="l00077"></a>00077
<a name="l00078"></a>00078 <span class="keyword">private</span>:
<a name="l00079"></a>00079 <span class="keyword">static</span> <span class="keywordtype">void</span> deleteItem(<a class="code" href="classgeos_1_1geom_1_1Geometry.html" title="Basic implementation of Geometry, constructed and destructed by GeometryFactory.">geom::Geometry</a>* item);
<a name="l00080"></a>00080
<a name="l00081"></a>00081 <span class="keyword">private</span>:
<a name="l00082"></a>00082 std::vector<geom::Geometry*> ownedItems;
<a name="l00083"></a>00083 };
<a name="l00084"></a>00084
<a name="l00104"></a><a class="code" href="classgeos_1_1operation_1_1geounion_1_1CascadedPolygonUnion.html">00104</a> <span class="keyword">class </span>GEOS_DLL <a class="code" href="classgeos_1_1operation_1_1geounion_1_1CascadedPolygonUnion.html" title="Provides an efficient method of unioning a collection of Polygonal geometries. This algorithm is fast...">CascadedPolygonUnion</a>
<a name="l00105"></a>00105 {
<a name="l00106"></a>00106 <span class="keyword">private</span>:
<a name="l00107"></a>00107 std::vector<geom::Polygon*>* inputPolys;
<a name="l00108"></a>00108 <a class="code" href="classgeos_1_1geom_1_1GeometryFactory.html" title="Supplies a set of utility methods for building Geometry objects from CoordinateSequence or other Geom...">geom::GeometryFactory</a> <span class="keyword">const</span>* geomFactory;
<a name="l00109"></a>00109
<a name="l00117"></a>00117 <span class="keyword">static</span> <span class="keywordtype">int</span> <span class="keyword">const</span> STRTREE_NODE_CAPACITY = 4;
<a name="l00118"></a>00118
<a name="l00119"></a>00119 <span class="keyword">public</span>:
<a name="l00120"></a>00120 <a class="code" href="classgeos_1_1operation_1_1geounion_1_1CascadedPolygonUnion.html" title="Provides an efficient method of unioning a collection of Polygonal geometries. This algorithm is fast...">CascadedPolygonUnion</a>();
<a name="l00121"></a>00121
<a name="l00128"></a>00128 <span class="keyword">static</span> <a class="code" href="classgeos_1_1geom_1_1Geometry.html" title="Basic implementation of Geometry, constructed and destructed by GeometryFactory.">geom::Geometry</a>* Union(std::vector<geom::Polygon*>* polys);
<a name="l00129"></a>00129
<a name="l00136"></a>00136 <span class="keyword">static</span> <a class="code" href="classgeos_1_1geom_1_1Geometry.html" title="Basic implementation of Geometry, constructed and destructed by GeometryFactory.">geom::Geometry</a>* Union(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1MultiPolygon.html" title="Basic implementation of MultiPolygon.">geom::MultiPolygon</a>* polys);
<a name="l00137"></a>00137
<a name="l00144"></a><a class="code" href="classgeos_1_1operation_1_1geounion_1_1CascadedPolygonUnion.html#a056d0965591c58d015e1bc5b924a9999">00144</a> <a class="code" href="classgeos_1_1operation_1_1geounion_1_1CascadedPolygonUnion.html" title="Provides an efficient method of unioning a collection of Polygonal geometries. This algorithm is fast...">CascadedPolygonUnion</a>(std::vector<geom::Polygon*>* polys)
<a name="l00145"></a>00145 : inputPolys(polys),
<a name="l00146"></a>00146 geomFactory(NULL)
<a name="l00147"></a>00147 {}
<a name="l00148"></a>00148
<a name="l00155"></a>00155 <a class="code" href="classgeos_1_1geom_1_1Geometry.html" title="Basic implementation of Geometry, constructed and destructed by GeometryFactory.">geom::Geometry</a>* Union();
<a name="l00156"></a>00156
<a name="l00157"></a>00157 <span class="keyword">private</span>:
<a name="l00158"></a>00158 <a class="code" href="classgeos_1_1geom_1_1Geometry.html" title="Basic implementation of Geometry, constructed and destructed by GeometryFactory.">geom::Geometry</a>* unionTree(index::strtree::ItemsList* geomTree);
<a name="l00159"></a>00159
<a name="l00165"></a>00165 <a class="code" href="classgeos_1_1geom_1_1Geometry.html" title="Basic implementation of Geometry, constructed and destructed by GeometryFactory.">geom::Geometry</a>* binaryUnion(<a class="code" href="classgeos_1_1operation_1_1geounion_1_1GeometryListHolder.html" title="Helper class holding Geometries, part of which are held by reference others are held exclusively...">GeometryListHolder</a>* geoms);
<a name="l00166"></a>00166
<a name="l00176"></a>00176 <a class="code" href="classgeos_1_1geom_1_1Geometry.html" title="Basic implementation of Geometry, constructed and destructed by GeometryFactory.">geom::Geometry</a>* binaryUnion(<a class="code" href="classgeos_1_1operation_1_1geounion_1_1GeometryListHolder.html" title="Helper class holding Geometries, part of which are held by reference others are held exclusively...">GeometryListHolder</a>* geoms, std::size_t start,
<a name="l00177"></a>00177 std::size_t end);
<a name="l00178"></a>00178
<a name="l00186"></a>00186 <a class="code" href="classgeos_1_1operation_1_1geounion_1_1GeometryListHolder.html" title="Helper class holding Geometries, part of which are held by reference others are held exclusively...">GeometryListHolder</a>* reduceToGeometries(index::strtree::ItemsList* geomTree);
<a name="l00187"></a>00187
<a name="l00197"></a>00197 <a class="code" href="classgeos_1_1geom_1_1Geometry.html" title="Basic implementation of Geometry, constructed and destructed by GeometryFactory.">geom::Geometry</a>* unionSafe(<a class="code" href="classgeos_1_1geom_1_1Geometry.html" title="Basic implementation of Geometry, constructed and destructed by GeometryFactory.">geom::Geometry</a>* g0, <a class="code" href="classgeos_1_1geom_1_1Geometry.html" title="Basic implementation of Geometry, constructed and destructed by GeometryFactory.">geom::Geometry</a>* g1);
<a name="l00198"></a>00198
<a name="l00199"></a>00199 <a class="code" href="classgeos_1_1geom_1_1Geometry.html" title="Basic implementation of Geometry, constructed and destructed by GeometryFactory.">geom::Geometry</a>* unionOptimized(<a class="code" href="classgeos_1_1geom_1_1Geometry.html" title="Basic implementation of Geometry, constructed and destructed by GeometryFactory.">geom::Geometry</a>* g0, <a class="code" href="classgeos_1_1geom_1_1Geometry.html" title="Basic implementation of Geometry, constructed and destructed by GeometryFactory.">geom::Geometry</a>* g1);
<a name="l00200"></a>00200
<a name="l00215"></a>00215 <a class="code" href="classgeos_1_1geom_1_1Geometry.html" title="Basic implementation of Geometry, constructed and destructed by GeometryFactory.">geom::Geometry</a>* unionUsingEnvelopeIntersection(<a class="code" href="classgeos_1_1geom_1_1Geometry.html" title="Basic implementation of Geometry, constructed and destructed by GeometryFactory.">geom::Geometry</a>* g0,
<a name="l00216"></a>00216 <a class="code" href="classgeos_1_1geom_1_1Geometry.html" title="Basic implementation of Geometry, constructed and destructed by GeometryFactory.">geom::Geometry</a>* g1, <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> <span class="keyword">const</span>& common);
<a name="l00217"></a>00217
<a name="l00218"></a>00218 <a class="code" href="classgeos_1_1geom_1_1Geometry.html" title="Basic implementation of Geometry, constructed and destructed by GeometryFactory.">geom::Geometry</a>* extractByEnvelope(<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> <span class="keyword">const</span>& env,
<a name="l00219"></a>00219 <a class="code" href="classgeos_1_1geom_1_1Geometry.html" title="Basic implementation of Geometry, constructed and destructed by GeometryFactory.">geom::Geometry</a>* geom, std::vector<geom::Geometry*>& disjointGeoms);
<a name="l00220"></a>00220
<a name="l00228"></a>00228 <span class="keyword">static</span> <a class="code" href="classgeos_1_1geom_1_1Geometry.html" title="Basic implementation of Geometry, constructed and destructed by GeometryFactory.">geom::Geometry</a>* unionActual(<a class="code" href="classgeos_1_1geom_1_1Geometry.html" title="Basic implementation of Geometry, constructed and destructed by GeometryFactory.">geom::Geometry</a>* g0, <a class="code" href="classgeos_1_1geom_1_1Geometry.html" title="Basic implementation of Geometry, constructed and destructed by GeometryFactory.">geom::Geometry</a>* g1);
<a name="l00229"></a>00229 };
<a name="l00230"></a>00230
<a name="l00231"></a>00231 } <span class="comment">// namespace geos::operation::union</span>
<a name="l00232"></a>00232 } <span class="comment">// namespace geos::operation</span>
<a name="l00233"></a>00233 } <span class="comment">// namespace geos</span>
<a name="l00234"></a>00234
<a name="l00235"></a>00235 <span class="preprocessor">#endif</span>
<a name="l00236"></a>00236 <span class="preprocessor"></span>
<a name="l00237"></a>00237 <span class="comment">/**********************************************************************</span>
<a name="l00238"></a>00238 <span class="comment"> * $Log$</span>
<a name="l00239"></a>00239 <span class="comment"> *</span>
<a name="l00240"></a>00240 <span class="comment"> **********************************************************************/</span>
<a name="l00241"></a>00241
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