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<h1>Edge.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: Edge.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) 2005-2006 Refractions Research Inc.</span>
<a name="l00008"></a>00008 <span class="comment"> * Copyright (C) 2001-2002 Vivid Solutions Inc.</span>
<a name="l00009"></a>00009 <span class="comment"> *</span>
<a name="l00010"></a>00010 <span class="comment"> * This is free software; you can redistribute and/or modify it under</span>
<a name="l00011"></a>00011 <span class="comment"> * the terms of the GNU Lesser General Public Licence as published</span>
<a name="l00012"></a>00012 <span class="comment"> * by the Free Software Foundation. </span>
<a name="l00013"></a>00013 <span class="comment"> * See the COPYING file for more information.</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"> *</span>
<a name="l00017"></a>00017 <span class="comment"> * Last port: geomgraph/Edge.java rev. 1.4 (JTS-1.10)</span>
<a name="l00018"></a>00018 <span class="comment"> *</span>
<a name="l00019"></a>00019 <span class="comment"> **********************************************************************/</span>
<a name="l00020"></a>00020
<a name="l00021"></a>00021
<a name="l00022"></a>00022 <span class="preprocessor">#ifndef GEOS_GEOMGRAPH_EDGE_H</span>
<a name="l00023"></a>00023 <span class="preprocessor"></span><span class="preprocessor">#define GEOS_GEOMGRAPH_EDGE_H</span>
<a name="l00024"></a>00024 <span class="preprocessor"></span>
<a name="l00025"></a>00025 <span class="preprocessor">#include <geos/export.h></span>
<a name="l00026"></a>00026 <span class="preprocessor">#include <string></span>
<a name="l00027"></a>00027 <span class="preprocessor">#include <cassert></span>
<a name="l00028"></a>00028
<a name="l00029"></a>00029 <span class="preprocessor">#include <geos/geomgraph/GraphComponent.h></span> <span class="comment">// for inheritance</span>
<a name="l00030"></a>00030 <span class="preprocessor">#include <geos/geomgraph/Depth.h></span> <span class="comment">// for member</span>
<a name="l00031"></a>00031 <span class="preprocessor">#include <geos/geomgraph/EdgeIntersectionList.h></span> <span class="comment">// for composition</span>
<a name="l00032"></a>00032 <span class="preprocessor">#include <geos/geom/CoordinateSequence.h></span> <span class="comment">// for inlines</span>
<a name="l00033"></a>00033
<a name="l00034"></a>00034 <span class="preprocessor">#include <geos/inline.h></span>
<a name="l00035"></a>00035
<a name="l00036"></a>00036 <span class="comment">// Forward declarations</span>
<a name="l00037"></a>00037 <span class="keyword">namespace </span>geos {
<a name="l00038"></a>00038 <span class="keyword">namespace </span>geom {
<a name="l00039"></a>00039 <span class="keyword">class </span>Envelope;
<a name="l00040"></a>00040 <span class="keyword">class </span>IntersectionMatrix;
<a name="l00041"></a>00041 <span class="keyword">class </span>Coordinate;
<a name="l00042"></a>00042 }
<a name="l00043"></a>00043 <span class="keyword">namespace </span>algorithm {
<a name="l00044"></a>00044 <span class="keyword">class </span>LineIntersector;
<a name="l00045"></a>00045 }
<a name="l00046"></a>00046 <span class="keyword">namespace </span>geomgraph {
<a name="l00047"></a>00047 <span class="keyword">class </span>Node;
<a name="l00048"></a>00048 <span class="keyword">class </span>EdgeEndStar;
<a name="l00049"></a>00049 <span class="keyword">class </span>Label;
<a name="l00050"></a>00050 <span class="keyword">class </span>NodeFactory;
<a name="l00051"></a>00051 <span class="keyword">namespace </span>index {
<a name="l00052"></a>00052 <span class="keyword">class </span>MonotoneChainEdge;
<a name="l00053"></a>00053 }
<a name="l00054"></a>00054 }
<a name="l00055"></a>00055 }
<a name="l00056"></a>00056
<a name="l00057"></a>00057 <span class="keyword">namespace </span>geos {
<a name="l00058"></a>00058 <span class="keyword">namespace </span>geomgraph { <span class="comment">// geos.geomgraph</span>
<a name="l00059"></a>00059
<a name="l00060"></a>00060 <span class="keyword">class </span>GEOS_DLL Edge: <span class="keyword">public</span> GraphComponent{
<a name="l00061"></a>00061 <span class="keyword">using</span> GraphComponent::updateIM;
<a name="l00062"></a>00062
<a name="l00063"></a>00063 <span class="keyword">private</span>:
<a name="l00064"></a>00064
<a name="l00065"></a>00065 std::string name;
<a name="l00066"></a>00066
<a name="l00068"></a>00068 index::MonotoneChainEdge *mce;
<a name="l00069"></a>00069
<a name="l00071"></a>00071 geom::Envelope *env;
<a name="l00072"></a>00072
<a name="l00073"></a>00073 <span class="keywordtype">bool</span> isIsolatedVar;
<a name="l00074"></a>00074
<a name="l00075"></a>00075 Depth depth;
<a name="l00076"></a>00076
<a name="l00077"></a>00077 <span class="keywordtype">int</span> depthDelta; <span class="comment">// the change in area depth from the R to L side of this edge</span>
<a name="l00078"></a>00078
<a name="l00079"></a>00079 <span class="keyword">public</span>:
<a name="l00080"></a>00080
<a name="l00081"></a>00081 <span class="keywordtype">void</span> testInvariant()<span class="keyword"> const </span>{
<a name="l00082"></a>00082 assert(pts);
<a name="l00083"></a>00083 assert(pts->size() > 1);
<a name="l00084"></a>00084 }
<a name="l00085"></a>00085
<a name="l00086"></a>00086
<a name="l00087"></a>00087 <span class="keyword">friend</span> std::ostream& operator<< (std::ostream& os, <span class="keyword">const</span> Edge& el);
<a name="l00088"></a>00088
<a name="l00089"></a>00089 <span class="keyword">static</span> <span class="keywordtype">void</span> updateIM(Label *lbl,geom::IntersectionMatrix *im);
<a name="l00090"></a>00090
<a name="l00092"></a>00092 geom::CoordinateSequence* pts;
<a name="l00093"></a>00093
<a name="l00094"></a>00094 EdgeIntersectionList eiList;
<a name="l00095"></a>00095
<a name="l00096"></a>00096 <span class="comment">//Edge();</span>
<a name="l00097"></a>00097
<a name="l00098"></a>00098 Edge(geom::CoordinateSequence* newPts, Label *newLabel);
<a name="l00099"></a>00099
<a name="l00100"></a>00100 Edge(geom::CoordinateSequence* newPts);
<a name="l00101"></a>00101
<a name="l00102"></a>00102 <span class="keyword">virtual</span> ~Edge();
<a name="l00103"></a>00103
<a name="l00104"></a>00104 <span class="keyword">virtual</span> <span class="keywordtype">int</span> getNumPoints()<span class="keyword"> const </span>{
<a name="l00105"></a>00105 <span class="keywordflow">return</span> <span class="keyword">static_cast<</span><span class="keywordtype">int</span><span class="keyword">></span>(pts->getSize());
<a name="l00106"></a>00106 }
<a name="l00107"></a>00107
<a name="l00108"></a>00108 <span class="keyword">virtual</span> <span class="keywordtype">void</span> setName(<span class="keyword">const</span> std::string &newName) {
<a name="l00109"></a>00109 name=newName;
<a name="l00110"></a>00110 }
<a name="l00111"></a>00111
<a name="l00112"></a>00112 <span class="keyword">virtual</span> <span class="keyword">const</span> geom::CoordinateSequence* getCoordinates()<span class="keyword"> const </span>{
<a name="l00113"></a>00113 testInvariant();
<a name="l00114"></a>00114 <span class="keywordflow">return</span> pts;
<a name="l00115"></a>00115 }
<a name="l00116"></a>00116
<a name="l00117"></a>00117 <span class="keyword">virtual</span> <span class="keyword">const</span> geom::Coordinate& getCoordinate(<span class="keywordtype">int</span> i)<span class="keyword"> const </span>{
<a name="l00118"></a>00118 testInvariant();
<a name="l00119"></a>00119 <span class="keywordflow">return</span> pts->getAt(i);
<a name="l00120"></a>00120 }
<a name="l00121"></a>00121
<a name="l00122"></a>00122 <span class="keyword">virtual</span> <span class="keyword">const</span> geom::Coordinate& getCoordinate()<span class="keyword"> const </span>{
<a name="l00123"></a>00123 testInvariant();
<a name="l00124"></a>00124 <span class="keywordflow">return</span> pts->getAt(0);
<a name="l00125"></a>00125 }
<a name="l00126"></a>00126
<a name="l00127"></a>00127
<a name="l00128"></a>00128 <span class="keyword">virtual</span> Depth &getDepth() {
<a name="l00129"></a>00129 testInvariant();
<a name="l00130"></a>00130 <span class="keywordflow">return</span> depth;
<a name="l00131"></a>00131 }
<a name="l00132"></a>00132
<a name="l00138"></a>00138 <span class="keyword">virtual</span> <span class="keywordtype">int</span> getDepthDelta()<span class="keyword"> const </span>{
<a name="l00139"></a>00139 testInvariant();
<a name="l00140"></a>00140 <span class="keywordflow">return</span> depthDelta;
<a name="l00141"></a>00141 }
<a name="l00142"></a>00142
<a name="l00143"></a>00143 <span class="keyword">virtual</span> <span class="keywordtype">void</span> setDepthDelta(<span class="keywordtype">int</span> newDepthDelta) {
<a name="l00144"></a>00144 depthDelta=newDepthDelta;
<a name="l00145"></a>00145 testInvariant();
<a name="l00146"></a>00146 }
<a name="l00147"></a>00147
<a name="l00148"></a>00148 <span class="keyword">virtual</span> <span class="keywordtype">int</span> getMaximumSegmentIndex()<span class="keyword"> const </span>{
<a name="l00149"></a>00149 testInvariant();
<a name="l00150"></a>00150 <span class="keywordflow">return</span> getNumPoints()-1;
<a name="l00151"></a>00151 }
<a name="l00152"></a>00152
<a name="l00153"></a>00153 <span class="keyword">virtual</span> EdgeIntersectionList& getEdgeIntersectionList() {
<a name="l00154"></a>00154 testInvariant();
<a name="l00155"></a>00155 <span class="keywordflow">return</span> eiList;
<a name="l00156"></a>00156 }
<a name="l00157"></a>00157
<a name="l00162"></a>00162 <span class="keyword">virtual</span> index::MonotoneChainEdge* getMonotoneChainEdge();
<a name="l00163"></a>00163
<a name="l00164"></a>00164 <span class="keyword">virtual</span> <span class="keywordtype">bool</span> isClosed()<span class="keyword"> const </span>{
<a name="l00165"></a>00165 testInvariant();
<a name="l00166"></a>00166 <span class="keywordflow">return</span> pts->getAt(0)==pts->getAt(getNumPoints()-1);
<a name="l00167"></a>00167 }
<a name="l00168"></a>00168
<a name="l00173"></a>00173 <span class="keyword">virtual</span> <span class="keywordtype">bool</span> isCollapsed() <span class="keyword">const</span>;
<a name="l00174"></a>00174
<a name="l00175"></a>00175 <span class="keyword">virtual</span> Edge* getCollapsedEdge();
<a name="l00176"></a>00176
<a name="l00177"></a>00177 <span class="keyword">virtual</span> <span class="keywordtype">void</span> setIsolated(<span class="keywordtype">bool</span> newIsIsolated) {
<a name="l00178"></a>00178 isIsolatedVar=newIsIsolated;
<a name="l00179"></a>00179 testInvariant();
<a name="l00180"></a>00180 }
<a name="l00181"></a>00181
<a name="l00182"></a>00182 <span class="keyword">virtual</span> <span class="keywordtype">bool</span> isIsolated()<span class="keyword"> const </span>{
<a name="l00183"></a>00183 testInvariant();
<a name="l00184"></a>00184 <span class="keywordflow">return</span> isIsolatedVar;
<a name="l00185"></a>00185 }
<a name="l00186"></a>00186
<a name="l00191"></a>00191 <span class="keyword">virtual</span> <span class="keywordtype">void</span> addIntersections(algorithm::LineIntersector *li, <span class="keywordtype">int</span> segmentIndex,
<a name="l00192"></a>00192 <span class="keywordtype">int</span> geomIndex);
<a name="l00193"></a>00193
<a name="l00195"></a>00195 <span class="comment">//</span>
<a name="l00199"></a>00199 <span class="comment"></span> <span class="keyword">virtual</span> <span class="keywordtype">void</span> addIntersection(algorithm::LineIntersector *li, <span class="keywordtype">int</span> segmentIndex,
<a name="l00200"></a>00200 <span class="keywordtype">int</span> geomIndex, <span class="keywordtype">int</span> intIndex);
<a name="l00201"></a>00201
<a name="l00203"></a>00203 <span class="comment">//</span>
<a name="l00206"></a>00206 <span class="comment"></span> <span class="keyword">virtual</span> <span class="keywordtype">void</span> computeIM(geom::IntersectionMatrix *im) {
<a name="l00207"></a>00207 updateIM(label, im);
<a name="l00208"></a>00208 testInvariant();
<a name="l00209"></a>00209 }
<a name="l00210"></a>00210
<a name="l00212"></a>00212 <span class="keyword">virtual</span> <span class="keywordtype">bool</span> isPointwiseEqual(<span class="keyword">const</span> Edge *e) <span class="keyword">const</span>;
<a name="l00213"></a>00213
<a name="l00214"></a>00214 <span class="keyword">virtual</span> std::string print() <span class="keyword">const</span>;
<a name="l00215"></a>00215
<a name="l00216"></a>00216 <span class="keyword">virtual</span> std::string printReverse() <span class="keyword">const</span>;
<a name="l00217"></a>00217
<a name="l00225"></a>00225 <span class="keyword">virtual</span> <span class="keywordtype">bool</span> equals(<span class="keyword">const</span> Edge& e) <span class="keyword">const</span>;
<a name="l00226"></a>00226
<a name="l00227"></a>00227 <span class="keyword">virtual</span> <span class="keywordtype">bool</span> equals(<span class="keyword">const</span> Edge* e)<span class="keyword"> const </span>{
<a name="l00228"></a>00228 assert(e);
<a name="l00229"></a>00229 <span class="keywordflow">return</span> equals(*e);
<a name="l00230"></a>00230 }
<a name="l00231"></a>00231
<a name="l00232"></a>00232 <span class="keyword">virtual</span> geom::Envelope* getEnvelope();
<a name="l00233"></a>00233 };
<a name="l00234"></a>00234
<a name="l00235"></a>00235
<a name="l00236"></a>00236 <span class="comment">//Operators</span>
<a name="l00237"></a>00237 <span class="keyword">inline</span> <span class="keywordtype">bool</span> <a class="code" href="namespacegeos_1_1geom.html#a47d9ceb105719b7108cf095799b4888d" title="Equality operator for Coordinate. 2D only.">operator==</a>(<span class="keyword">const</span> Edge &a, <span class="keyword">const</span> Edge &b) {
<a name="l00238"></a>00238 <span class="keywordflow">return</span> a.equals(b);
<a name="l00239"></a>00239 }
<a name="l00240"></a>00240
<a name="l00241"></a>00241 std::ostream& operator<< (std::ostream& os, <span class="keyword">const</span> Edge& el);
<a name="l00242"></a>00242
<a name="l00243"></a>00243
<a name="l00244"></a>00244 } <span class="comment">// namespace geos.geomgraph</span>
<a name="l00245"></a>00245 } <span class="comment">// namespace geos</span>
<a name="l00246"></a>00246
<a name="l00247"></a>00247 <span class="comment">//#ifdef GEOS_INLINE</span>
<a name="l00248"></a>00248 <span class="comment">//# include "geos/geomgraph/Edge.inl"</span>
<a name="l00249"></a>00249 <span class="comment">//#endif</span>
<a name="l00250"></a>00250
<a name="l00251"></a>00251 <span class="preprocessor">#endif // ifndef GEOS_GEOMGRAPH_EDGE_H</span>
<a name="l00252"></a>00252 <span class="preprocessor"></span>
<a name="l00253"></a>00253 <span class="comment">/**********************************************************************</span>
<a name="l00254"></a>00254 <span class="comment"> * $Log$</span>
<a name="l00255"></a>00255 <span class="comment"> * Revision 1.4 2006/04/05 18:28:42 strk</span>
<a name="l00256"></a>00256 <span class="comment"> * Moved testInvariant() methods from private to public, added</span>
<a name="l00257"></a>00257 <span class="comment"> * some comments about them.</span>
<a name="l00258"></a>00258 <span class="comment"> *</span>
<a name="l00259"></a>00259 <span class="comment"> * Revision 1.3 2006/03/24 09:52:41 strk</span>
<a name="l00260"></a>00260 <span class="comment"> * USE_INLINE => GEOS_INLINE</span>
<a name="l00261"></a>00261 <span class="comment"> *</span>
<a name="l00262"></a>00262 <span class="comment"> * Revision 1.2 2006/03/14 11:03:14 strk</span>
<a name="l00263"></a>00263 <span class="comment"> * Added operator<< for Edge and EdgeList</span>
<a name="l00264"></a>00264 <span class="comment"> *</span>
<a name="l00265"></a>00265 <span class="comment"> * Revision 1.1 2006/03/09 16:46:49 strk</span>
<a name="l00266"></a>00266 <span class="comment"> * geos::geom namespace definition, first pass at headers split</span>
<a name="l00267"></a>00267 <span class="comment"> *</span>
<a name="l00268"></a>00268 <span class="comment"> **********************************************************************/</span>
<a name="l00269"></a>00269
</pre></div></div>
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