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<h1>OverlayOp.h</h1> </div>
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<div class="contents">
<div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/**********************************************************************</span>
<a name="l00002"></a>00002 <span class="comment"> * $Id: OverlayOp.h 2557 2009-06-08 09:30:55Z 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: operation/overlay/OverlayOp.java rev. 1.31 (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_OVERLAY_OVERLAYOP_H</span>
<a name="l00021"></a>00021 <span class="preprocessor"></span><span class="preprocessor">#define GEOS_OP_OVERLAY_OVERLAYOP_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/operation/GeometryGraphOperation.h></span> <span class="comment">// for inheritance</span>
<a name="l00026"></a>00026 <span class="preprocessor">#include <geos/geomgraph/EdgeList.h></span> <span class="comment">// for composition</span>
<a name="l00027"></a>00027 <span class="preprocessor">#include <geos/algorithm/PointLocator.h></span> <span class="comment">// for composition</span>
<a name="l00028"></a>00028 <span class="preprocessor">#include <geos/geomgraph/PlanarGraph.h></span> <span class="comment">// for inline (GeometryGraph->PlanarGraph)</span>
<a name="l00029"></a>00029
<a name="l00030"></a>00030 <span class="preprocessor">#include <vector></span>
<a name="l00031"></a>00031
<a name="l00032"></a>00032 <span class="comment">// Forward declarations</span>
<a name="l00033"></a>00033 <span class="keyword">namespace </span>geos {
<a name="l00034"></a>00034 <span class="keyword">namespace </span>geom {
<a name="l00035"></a>00035 <span class="keyword">class </span>Geometry;
<a name="l00036"></a>00036 <span class="keyword">class </span>Coordinate;
<a name="l00037"></a>00037 <span class="keyword">class </span>GeometryFactory;
<a name="l00038"></a>00038 <span class="keyword">class </span>Polygon;
<a name="l00039"></a>00039 <span class="keyword">class </span>LineString;
<a name="l00040"></a>00040 <span class="keyword">class </span>Point;
<a name="l00041"></a>00041 }
<a name="l00042"></a>00042 <span class="keyword">namespace </span>geomgraph {
<a name="l00043"></a>00043 <span class="keyword">class </span>Label;
<a name="l00044"></a>00044 <span class="keyword">class </span>Edge;
<a name="l00045"></a>00045 <span class="keyword">class </span>Node;
<a name="l00046"></a>00046 }
<a name="l00047"></a>00047 <span class="keyword">namespace </span>operation {
<a name="l00048"></a>00048 <span class="keyword">namespace </span>overlay {
<a name="l00049"></a>00049 <span class="keyword">class </span>ElevationMatrix;
<a name="l00050"></a>00050 }
<a name="l00051"></a>00051 }
<a name="l00052"></a>00052 }
<a name="l00053"></a>00053
<a name="l00054"></a>00054 <span class="keyword">namespace </span>geos {
<a name="l00055"></a>00055 <span class="keyword">namespace </span>operation { <span class="comment">// geos::operation</span>
<a name="l00056"></a>00056 <span class="keyword">namespace </span>overlay { <span class="comment">// geos::operation::overlay</span>
<a name="l00057"></a>00057
<a name="l00059"></a>00059 <span class="comment">//</span>
<a name="l00063"></a><a class="code" href="classgeos_1_1operation_1_1overlay_1_1OverlayOp.html">00063</a> <span class="comment"></span><span class="keyword">class </span>GEOS_DLL <a class="code" href="classgeos_1_1operation_1_1overlay_1_1OverlayOp.html" title="Computes the overlay of two Geometry.">OverlayOp</a>: <span class="keyword">public</span> <a class="code" href="classgeos_1_1operation_1_1GeometryGraphOperation.html" title="The base class for operations that require GeometryGraph.">GeometryGraphOperation</a> {
<a name="l00064"></a>00064
<a name="l00065"></a>00065 <span class="keyword">public</span>:
<a name="l00066"></a>00066
<a name="l00068"></a>00068 <span class="comment">//</span>
<a name="l00072"></a><a class="code" href="classgeos_1_1operation_1_1overlay_1_1OverlayOp.html#a1f2552b975ce852f0b192dc00997b131">00072</a> <span class="comment"></span> <span class="keyword">enum</span> <a class="code" href="classgeos_1_1operation_1_1overlay_1_1OverlayOp.html#a1f2552b975ce852f0b192dc00997b131" title="The spatial functions supported by this class.">OpCode</a> {
<a name="l00073"></a>00073 opINTERSECTION=1,
<a name="l00074"></a>00074 opUNION,
<a name="l00075"></a>00075 opDIFFERENCE,
<a name="l00076"></a>00076 opSYMDIFFERENCE
<a name="l00077"></a>00077 };
<a name="l00078"></a>00078
<a name="l00079"></a>00079 <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>* <a class="code" href="structgeos_1_1operation_1_1overlay_1_1overlayOp.html" title="OverlayOp::overlayOp Adapter for use with geom::BinaryOp.">overlayOp</a>(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Geometry.html" title="Basic implementation of Geometry, constructed and destructed by GeometryFactory.">geom::Geometry</a> *geom0,
<a name="l00080"></a>00080 <span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Geometry.html" title="Basic implementation of Geometry, constructed and destructed by GeometryFactory.">geom::Geometry</a> *geom1,
<a name="l00081"></a>00081 OpCode opCode);
<a name="l00082"></a>00082 <span class="comment">//throw(TopologyException *);</span>
<a name="l00083"></a>00083
<a name="l00084"></a>00084 <span class="keyword">static</span> <span class="keywordtype">bool</span> isResultOfOp(<a class="code" href="classgeos_1_1geomgraph_1_1Label.html" title="A Label indicates the topological relationship of a component of a topology graph to a given Geometry...">geomgraph::Label</a> *label, OpCode opCode);
<a name="l00085"></a>00085
<a name="l00087"></a>00087 <span class="comment">//</span>
<a name="l00090"></a>00090 <span class="comment"></span> <span class="keyword">static</span> <span class="keywordtype">bool</span> isResultOfOp(<span class="keywordtype">int</span> loc0, <span class="keywordtype">int</span> loc1, OpCode opCode);
<a name="l00091"></a>00091
<a name="l00093"></a>00093 <span class="comment">// </span>
<a name="l00097"></a>00097 <span class="comment"></span> <a class="code" href="classgeos_1_1operation_1_1overlay_1_1OverlayOp.html" title="Computes the overlay of two Geometry.">OverlayOp</a>(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Geometry.html" title="Basic implementation of Geometry, constructed and destructed by GeometryFactory.">geom::Geometry</a> *g0, <span class="keyword">const</span> <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="l00098"></a>00098
<a name="l00099"></a>00099 <span class="keyword">virtual</span> ~<a class="code" href="classgeos_1_1operation_1_1overlay_1_1OverlayOp.html" title="Computes the overlay of two Geometry.">OverlayOp</a>(); <span class="comment">// FIXME: virtual ?</span>
<a name="l00100"></a>00100
<a name="l00101"></a>00101 <a class="code" href="classgeos_1_1geom_1_1Geometry.html" title="Basic implementation of Geometry, constructed and destructed by GeometryFactory.">geom::Geometry</a>* getResultGeometry(OpCode funcCode);
<a name="l00102"></a>00102 <span class="comment">// throw(TopologyException *);</span>
<a name="l00103"></a>00103
<a name="l00104"></a>00104 <a class="code" href="classgeos_1_1geomgraph_1_1PlanarGraph.html" title="Represents a directed graph which is embeddable in a planar surface.">geomgraph::PlanarGraph</a>& getGraph() { <span class="keywordflow">return</span> graph; }
<a name="l00105"></a>00105
<a name="l00113"></a>00113 <span class="keywordtype">bool</span> isCoveredByLA(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html" title="Coordinate is the lightweight class used to store coordinates.">geom::Coordinate</a>& coord);
<a name="l00114"></a>00114
<a name="l00121"></a>00121 <span class="keywordtype">bool</span> isCoveredByA(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html" title="Coordinate is the lightweight class used to store coordinates.">geom::Coordinate</a>& coord);
<a name="l00122"></a>00122
<a name="l00123"></a>00123 <span class="comment">/*</span>
<a name="l00124"></a>00124 <span class="comment"> * @return true if the coord is located in the interior or boundary of</span>
<a name="l00125"></a>00125 <span class="comment"> * a geometry in the list.</span>
<a name="l00126"></a>00126 <span class="comment"> */</span>
<a name="l00127"></a>00127
<a name="l00128"></a>00128 <span class="keyword">protected</span>:
<a name="l00129"></a>00129
<a name="l00138"></a>00138 <span class="keywordtype">void</span> insertUniqueEdge(geomgraph::Edge *e);
<a name="l00139"></a>00139
<a name="l00140"></a>00140 <span class="keyword">private</span>:
<a name="l00141"></a>00141
<a name="l00142"></a>00142 <a class="code" href="classgeos_1_1algorithm_1_1PointLocator.html" title="Computes the topological relationship (Location) of a single point to a Geometry.">algorithm::PointLocator</a> ptLocator;
<a name="l00143"></a>00143
<a name="l00144"></a>00144 <span class="keyword">const</span> <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> *geomFact;
<a name="l00145"></a>00145
<a name="l00146"></a>00146 <a class="code" href="classgeos_1_1geom_1_1Geometry.html" title="Basic implementation of Geometry, constructed and destructed by GeometryFactory.">geom::Geometry</a> *resultGeom;
<a name="l00147"></a>00147
<a name="l00148"></a>00148 <a class="code" href="classgeos_1_1geomgraph_1_1PlanarGraph.html" title="Represents a directed graph which is embeddable in a planar surface.">geomgraph::PlanarGraph</a> graph;
<a name="l00149"></a>00149
<a name="l00150"></a>00150 <a class="code" href="classgeos_1_1geomgraph_1_1EdgeList.html">geomgraph::EdgeList</a> edgeList;
<a name="l00151"></a>00151
<a name="l00152"></a>00152 std::vector<geom::Polygon*> *resultPolyList;
<a name="l00153"></a>00153
<a name="l00154"></a>00154 std::vector<geom::LineString*> *resultLineList;
<a name="l00155"></a>00155
<a name="l00156"></a>00156 std::vector<geom::Point*> *resultPointList;
<a name="l00157"></a>00157
<a name="l00158"></a>00158 <span class="keywordtype">void</span> computeOverlay(OpCode opCode); <span class="comment">// throw(TopologyException *);</span>
<a name="l00159"></a>00159
<a name="l00160"></a>00160 <span class="keywordtype">void</span> insertUniqueEdges(std::vector<geomgraph::Edge*> *edges);
<a name="l00161"></a>00161
<a name="l00162"></a>00162 <span class="comment">/*</span>
<a name="l00163"></a>00163 <span class="comment"> * If either of the GeometryLocations for the existing label is</span>
<a name="l00164"></a>00164 <span class="comment"> * exactly opposite to the one in the labelToMerge,</span>
<a name="l00165"></a>00165 <span class="comment"> * this indicates a dimensional collapse has happened.</span>
<a name="l00166"></a>00166 <span class="comment"> * In this case, convert the label for that Geometry to a Line label</span>
<a name="l00167"></a>00167 <span class="comment"> */</span>
<a name="l00168"></a>00168 <span class="comment">//Not needed</span>
<a name="l00169"></a>00169 <span class="comment">//void checkDimensionalCollapse(geomgraph::Label labelToMerge, geomgraph::Label existingLabel);</span>
<a name="l00170"></a>00170
<a name="l00182"></a>00182 <span class="keywordtype">void</span> computeLabelsFromDepths();
<a name="l00183"></a>00183
<a name="l00188"></a>00188 <span class="keywordtype">void</span> replaceCollapsedEdges();
<a name="l00189"></a>00189
<a name="l00200"></a>00200 <span class="keywordtype">void</span> copyPoints(<span class="keywordtype">int</span> argIndex);
<a name="l00201"></a>00201
<a name="l00210"></a>00210 <span class="keywordtype">void</span> computeLabelling(); <span class="comment">// throw(TopologyException *);</span>
<a name="l00211"></a>00211
<a name="l00219"></a>00219 <span class="keywordtype">void</span> mergeSymLabels();
<a name="l00220"></a>00220
<a name="l00221"></a>00221 <span class="keywordtype">void</span> updateNodeLabelling();
<a name="l00222"></a>00222
<a name="l00240"></a>00240 <span class="keywordtype">void</span> labelIncompleteNodes();
<a name="l00241"></a>00241
<a name="l00245"></a>00245 <span class="keywordtype">void</span> labelIncompleteNode(geomgraph::Node *n, <span class="keywordtype">int</span> targetIndex);
<a name="l00246"></a>00246
<a name="l00258"></a>00258 <span class="keywordtype">void</span> findResultAreaEdges(OpCode opCode);
<a name="l00259"></a>00259
<a name="l00264"></a>00264 <span class="keywordtype">void</span> cancelDuplicateResultEdges();
<a name="l00265"></a>00265
<a name="l00270"></a>00270 <span class="keywordtype">bool</span> isCovered(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html" title="Coordinate is the lightweight class used to store coordinates.">geom::Coordinate</a>& coord,
<a name="l00271"></a>00271 std::vector<geom::Geometry*> *geomList);
<a name="l00272"></a>00272
<a name="l00277"></a>00277 <span class="keywordtype">bool</span> isCovered(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html" title="Coordinate is the lightweight class used to store coordinates.">geom::Coordinate</a>& coord,
<a name="l00278"></a>00278 std::vector<geom::Polygon*> *geomList);
<a name="l00279"></a>00279
<a name="l00284"></a>00284 <span class="keywordtype">bool</span> isCovered(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html" title="Coordinate is the lightweight class used to store coordinates.">geom::Coordinate</a>& coord,
<a name="l00285"></a>00285 std::vector<geom::LineString*> *geomList);
<a name="l00286"></a>00286
<a name="l00291"></a>00291 <a class="code" href="classgeos_1_1geom_1_1Geometry.html" title="Basic implementation of Geometry, constructed and destructed by GeometryFactory.">geom::Geometry</a>* computeGeometry(
<a name="l00292"></a>00292 std::vector<geom::Point*> *nResultPointList,
<a name="l00293"></a>00293 std::vector<geom::LineString*> *nResultLineList,
<a name="l00294"></a>00294 std::vector<geom::Polygon*> *nResultPolyList);
<a name="l00295"></a>00295
<a name="l00297"></a>00297 std::vector<geomgraph::Edge *>dupEdges;
<a name="l00298"></a>00298
<a name="l00303"></a>00303 <span class="keywordtype">int</span> mergeZ(geomgraph::Node *n, <span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Polygon.html" title="Represents a linear polygon, which may include holes.">geom::Polygon</a> *poly) <span class="keyword">const</span>;
<a name="l00304"></a>00304
<a name="l00310"></a>00310 <span class="keywordtype">int</span> mergeZ(geomgraph::Node *n, <span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1LineString.html" title="Basic implementation of LineString.">geom::LineString</a> *line) <span class="keyword">const</span>;
<a name="l00311"></a>00311
<a name="l00315"></a>00315 <span class="keywordtype">double</span> avgz[2];
<a name="l00316"></a>00316 <span class="keywordtype">bool</span> avgzcomputed[2];
<a name="l00317"></a>00317
<a name="l00318"></a>00318 <span class="keywordtype">double</span> getAverageZ(<span class="keywordtype">int</span> targetIndex);
<a name="l00319"></a>00319 <span class="keyword">static</span> <span class="keywordtype">double</span> getAverageZ(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Polygon.html" title="Represents a linear polygon, which may include holes.">geom::Polygon</a> *poly);
<a name="l00320"></a>00320
<a name="l00321"></a>00321 ElevationMatrix *elevationMatrix;
<a name="l00322"></a>00322
<a name="l00325"></a>00325 <span class="keywordtype">void</span> checkObviouslyWrongResult(OpCode opCode);
<a name="l00326"></a>00326
<a name="l00327"></a>00327 };
<a name="l00328"></a>00328
<a name="l00332"></a><a class="code" href="structgeos_1_1operation_1_1overlay_1_1overlayOp.html">00332</a> <span class="keyword">struct </span><a class="code" href="structgeos_1_1operation_1_1overlay_1_1overlayOp.html" title="OverlayOp::overlayOp Adapter for use with geom::BinaryOp.">overlayOp</a> {
<a name="l00333"></a>00333
<a name="l00334"></a>00334 <a class="code" href="classgeos_1_1operation_1_1overlay_1_1OverlayOp.html#a1f2552b975ce852f0b192dc00997b131" title="The spatial functions supported by this class.">OverlayOp::OpCode</a> opCode;
<a name="l00335"></a>00335
<a name="l00336"></a>00336 <a class="code" href="structgeos_1_1operation_1_1overlay_1_1overlayOp.html" title="OverlayOp::overlayOp Adapter for use with geom::BinaryOp.">overlayOp</a>(<a class="code" href="classgeos_1_1operation_1_1overlay_1_1OverlayOp.html#a1f2552b975ce852f0b192dc00997b131" title="The spatial functions supported by this class.">OverlayOp::OpCode</a> code)
<a name="l00337"></a>00337 :
<a name="l00338"></a>00338 opCode(code)
<a name="l00339"></a>00339 {}
<a name="l00340"></a>00340
<a name="l00341"></a>00341 <a class="code" href="classgeos_1_1geom_1_1Geometry.html" title="Basic implementation of Geometry, constructed and destructed by GeometryFactory.">geom::Geometry</a>* operator() (<span class="keyword">const</span> <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="l00342"></a>00342 <span class="keyword">const</span> <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="l00343"></a>00343 {
<a name="l00344"></a>00344 <span class="keywordflow">return</span> OverlayOp::overlayOp(g0, g1, opCode);
<a name="l00345"></a>00345 }
<a name="l00346"></a>00346
<a name="l00347"></a>00347 };
<a name="l00348"></a>00348
<a name="l00349"></a>00349 } <span class="comment">// namespace geos::operation::overlay</span>
<a name="l00350"></a>00350 } <span class="comment">// namespace geos::operation</span>
<a name="l00351"></a>00351 } <span class="comment">// namespace geos</span>
<a name="l00352"></a>00352
<a name="l00353"></a>00353 <span class="preprocessor">#endif // ndef GEOS_OP_OVERLAY_OVERLAYOP_H</span>
<a name="l00354"></a>00354 <span class="preprocessor"></span>
<a name="l00355"></a>00355 <span class="comment">/**********************************************************************</span>
<a name="l00356"></a>00356 <span class="comment"> * $Log$</span>
<a name="l00357"></a>00357 <span class="comment"> * Revision 1.6 2006/07/05 20:19:29 strk</span>
<a name="l00358"></a>00358 <span class="comment"> * added checks for obviously wrong result of difference and intersection ops</span>
<a name="l00359"></a>00359 <span class="comment"> *</span>
<a name="l00360"></a>00360 <span class="comment"> * Revision 1.5 2006/06/05 15:36:34 strk</span>
<a name="l00361"></a>00361 <span class="comment"> * Given OverlayOp funx code enum a name and renamed values to have a lowercase prefix. Drop all of noding headers from installed header set.</span>
<a name="l00362"></a>00362 <span class="comment"> *</span>
<a name="l00363"></a>00363 <span class="comment"> * Revision 1.4 2006/05/24 15:17:44 strk</span>
<a name="l00364"></a>00364 <span class="comment"> * Reduced number of installed headers in geos/operation/ subdir</span>
<a name="l00365"></a>00365 <span class="comment"> *</span>
<a name="l00366"></a>00366 <span class="comment"> * Revision 1.3 2006/04/14 15:04:36 strk</span>
<a name="l00367"></a>00367 <span class="comment"> * fixed missing namespace qualification in overlay::overlayOp</span>
<a name="l00368"></a>00368 <span class="comment"> *</span>
<a name="l00369"></a>00369 <span class="comment"> * Revision 1.2 2006/04/14 14:35:47 strk</span>
<a name="l00370"></a>00370 <span class="comment"> * Added overlayOp() adapter for use in templates expecting binary ops</span>
<a name="l00371"></a>00371 <span class="comment"> *</span>
<a name="l00372"></a>00372 <span class="comment"> * Revision 1.1 2006/03/17 13:24:59 strk</span>
<a name="l00373"></a>00373 <span class="comment"> * opOverlay.h header splitted. Reduced header inclusions in operation/overlay implementation files. ElevationMatrixFilter code moved from own file to ElevationMatrix.cpp (ideally a class-private).</span>
<a name="l00374"></a>00374 <span class="comment"> *</span>
<a name="l00375"></a>00375 <span class="comment"> **********************************************************************/</span>
<a name="l00376"></a>00376
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