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<h1>CGAlgorithms.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: CGAlgorithms.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) 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: algorithm/CGAlgorithms.java rev. 1.46 (JTS-1.9)</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 <span class="preprocessor">#ifndef GEOS_ALGORITHM_CGALGORITHM_H</span>
<a name="l00022"></a>00022 <span class="preprocessor"></span><span class="preprocessor">#define GEOS_ALGORITHM_CGALGORITHM_H</span>
<a name="l00023"></a>00023 <span class="preprocessor"></span>
<a name="l00024"></a>00024 <span class="preprocessor">#include <geos/export.h></span>
<a name="l00025"></a>00025 <span class="preprocessor">#include <vector></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>Coordinate;
<a name="l00031"></a>00031 <span class="keyword">class </span>CoordinateSequence;
<a name="l00032"></a>00032 }
<a name="l00033"></a>00033 }
<a name="l00034"></a>00034
<a name="l00035"></a>00035
<a name="l00036"></a>00036 <span class="keyword">namespace </span>geos {
<a name="l00037"></a>00037 <span class="keyword">namespace </span>algorithm { <span class="comment">// geos::algorithm</span>
<a name="l00038"></a>00038
<a name="l00047"></a><a class="code" href="classgeos_1_1algorithm_1_1CGAlgorithms.html">00047</a> <span class="keyword">class </span>GEOS_DLL <a class="code" href="classgeos_1_1algorithm_1_1CGAlgorithms.html" title="Specifies and implements various fundamental Computational Geometric algorithms. The algorithms suppl...">CGAlgorithms</a> {
<a name="l00048"></a>00048
<a name="l00049"></a>00049 <span class="keyword">public</span>:
<a name="l00050"></a>00050
<a name="l00051"></a>00051 <span class="keyword">enum</span> {
<a name="l00052"></a>00052 CLOCKWISE=-1,
<a name="l00053"></a>00053 COLLINEAR,
<a name="l00054"></a>00054 COUNTERCLOCKWISE
<a name="l00055"></a>00055 };
<a name="l00056"></a>00056
<a name="l00057"></a>00057 <span class="keyword">enum</span> {
<a name="l00058"></a>00058 RIGHT=-1,
<a name="l00059"></a>00059 LEFT,
<a name="l00060"></a>00060 STRAIGHT
<a name="l00061"></a>00061 };
<a name="l00062"></a>00062
<a name="l00063"></a>00063 <a class="code" href="classgeos_1_1algorithm_1_1CGAlgorithms.html" title="Specifies and implements various fundamental Computational Geometric algorithms. The algorithms suppl...">CGAlgorithms</a>(){};
<a name="l00064"></a>00064
<a name="l00081"></a>00081 <span class="keyword">static</span> <span class="keywordtype">bool</span> isPointInRing(<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>& p,
<a name="l00082"></a>00082 <span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1CoordinateSequence.html" title="The internal representation of a list of coordinates inside a Geometry.">geom::CoordinateSequence</a>* ring);
<a name="l00083"></a>00083
<a name="l00085"></a>00085 <span class="keyword">static</span> <span class="keywordtype">bool</span> isPointInRing(<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>& p,
<a name="l00086"></a>00086 <span class="keyword">const</span> std::vector<const geom::Coordinate*>& ring);
<a name="l00087"></a>00087
<a name="l00102"></a>00102 <span class="keyword">static</span> <span class="keywordtype">int</span> locatePointInRing(<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>& p,
<a name="l00103"></a>00103 <span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1CoordinateSequence.html" title="The internal representation of a list of coordinates inside a Geometry.">geom::CoordinateSequence</a>& ring);
<a name="l00104"></a>00104
<a name="l00106"></a>00106 <span class="keyword">static</span> <span class="keywordtype">int</span> locatePointInRing(<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>& p,
<a name="l00107"></a>00107 <span class="keyword">const</span> std::vector<const geom::Coordinate*>& ring);
<a name="l00108"></a>00108
<a name="l00116"></a>00116 <span class="keyword">static</span> <span class="keywordtype">bool</span> isOnLine(<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>& p,
<a name="l00117"></a>00117 <span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1CoordinateSequence.html" title="The internal representation of a list of coordinates inside a Geometry.">geom::CoordinateSequence</a>* pt);
<a name="l00118"></a>00118
<a name="l00134"></a>00134 <span class="keyword">static</span> <span class="keywordtype">bool</span> isCCW(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1CoordinateSequence.html" title="The internal representation of a list of coordinates inside a Geometry.">geom::CoordinateSequence</a>* ring);
<a name="l00135"></a>00135
<a name="l00148"></a>00148 <span class="keyword">static</span> <span class="keywordtype">int</span> computeOrientation(<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>& p1,
<a name="l00149"></a>00149 <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>& p2,
<a name="l00150"></a>00150 <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>& q);
<a name="l00151"></a>00151
<a name="l00162"></a>00162 <span class="keyword">static</span> <span class="keywordtype">double</span> distancePointLine(<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>& p,
<a name="l00163"></a>00163 <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>& A,
<a name="l00164"></a>00164 <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>& B);
<a name="l00165"></a>00165
<a name="l00175"></a>00175 <span class="keyword">static</span> <span class="keywordtype">double</span> distancePointLinePerpendicular(<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>& p,
<a name="l00176"></a>00176 <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>& A,
<a name="l00177"></a>00177 <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>& B);
<a name="l00178"></a>00178
<a name="l00189"></a>00189 <span class="keyword">static</span> <span class="keywordtype">double</span> distanceLineLine(<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>& A,
<a name="l00190"></a>00190 <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>& B,
<a name="l00191"></a>00191 <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>& C,
<a name="l00192"></a>00192 <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>& D);
<a name="l00193"></a>00193
<a name="l00198"></a>00198 <span class="keyword">static</span> <span class="keywordtype">double</span> signedArea(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1CoordinateSequence.html" title="The internal representation of a list of coordinates inside a Geometry.">geom::CoordinateSequence</a>* ring);
<a name="l00199"></a>00199
<a name="l00207"></a>00207 <span class="keyword">static</span> <span class="keywordtype">double</span> length(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1CoordinateSequence.html" title="The internal representation of a list of coordinates inside a Geometry.">geom::CoordinateSequence</a>* pts);
<a name="l00208"></a>00208
<a name="l00221"></a>00221 <span class="keyword">static</span> <span class="keywordtype">int</span> orientationIndex(<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>& p1,
<a name="l00222"></a>00222 <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>& p2,
<a name="l00223"></a>00223 <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>& q);
<a name="l00224"></a>00224
<a name="l00225"></a>00225 };
<a name="l00226"></a>00226
<a name="l00227"></a>00227 } <span class="comment">// namespace geos::algorithm</span>
<a name="l00228"></a>00228 } <span class="comment">// namespace geos</span>
<a name="l00229"></a>00229
<a name="l00230"></a>00230 <span class="preprocessor">#endif // GEOS_ALGORITHM_CGALGORITHM_H</span>
<a name="l00231"></a>00231 <span class="preprocessor"></span>
<a name="l00232"></a>00232 <span class="comment">/**********************************************************************</span>
<a name="l00233"></a>00233 <span class="comment"> * $Log$</span>
<a name="l00234"></a>00234 <span class="comment"> * Revision 1.2 2006/05/02 14:51:53 strk</span>
<a name="l00235"></a>00235 <span class="comment"> * Added port info and fixed doxygen comments for CGAlgorithms class</span>
<a name="l00236"></a>00236 <span class="comment"> *</span>
<a name="l00237"></a>00237 <span class="comment"> * Revision 1.1 2006/03/09 16:46:48 strk</span>
<a name="l00238"></a>00238 <span class="comment"> * geos::geom namespace definition, first pass at headers split</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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