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<h1>PointPairDistance.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: PointPairDistance.h 2809 2009-12-06 01:05:24Z 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) 2009 Sandro Santilli <strk@keybit.net></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: algorithm/distance/PointPairDistance.java 1.1 (JTS-1.9)</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_ALGORITHM_DISTANCE_POINTPAIRDISTANCE_H</span>
<a name="l00021"></a>00021 <span class="preprocessor"></span><span class="preprocessor">#define GEOS_ALGORITHM_DISTANCE_POINTPAIRDISTANCE_H</span>
<a name="l00022"></a>00022 <span class="preprocessor"></span>
<a name="l00023"></a>00023 <span class="comment">//#include <geos/geom/LineSegment.h> // for composition</span>
<a name="l00024"></a>00024 <span class="preprocessor">#include <geos/platform.h></span> <span class="comment">// for DoubleNotANumber</span>
<a name="l00025"></a>00025 <span class="preprocessor">#include <geos/geom/Coordinate.h></span> <span class="comment">// for inlines</span>
<a name="l00026"></a>00026
<a name="l00027"></a>00027 <span class="preprocessor">#include <vector></span> <span class="comment">// for composition</span>
<a name="l00028"></a>00028 <span class="preprocessor">#include <cassert></span>
<a name="l00029"></a>00029
<a name="l00030"></a>00030 <span class="keyword">namespace </span>geos {
<a name="l00031"></a>00031 <span class="keyword">namespace </span>algorithm {
<a name="l00032"></a>00032 <span class="keyword">namespace </span>distance {
<a name="l00033"></a>00033 <span class="comment">//class PointPairDistance;</span>
<a name="l00034"></a>00034 }
<a name="l00035"></a>00035 }
<a name="l00036"></a>00036 <span class="keyword">namespace </span>geom {
<a name="l00037"></a>00037 <span class="comment">//class Geometry;</span>
<a name="l00038"></a>00038 <span class="keyword">class </span>Coordinate;
<a name="l00039"></a>00039 <span class="comment">//class LineString; </span>
<a name="l00040"></a>00040 <span class="comment">//class Polygon; </span>
<a name="l00041"></a>00041 }
<a name="l00042"></a>00042 }
<a name="l00043"></a>00043
<a name="l00044"></a>00044 <span class="keyword">namespace </span>geos {
<a name="l00045"></a>00045 <span class="keyword">namespace </span>algorithm { <span class="comment">// geos::algorithm</span>
<a name="l00046"></a>00046 <span class="keyword">namespace </span>distance { <span class="comment">// geos::algorithm::distance</span>
<a name="l00047"></a>00047
<a name="l00053"></a><a class="code" href="classgeos_1_1algorithm_1_1distance_1_1PointPairDistance.html">00053</a> <span class="keyword">class </span><a class="code" href="classgeos_1_1algorithm_1_1distance_1_1PointPairDistance.html">PointPairDistance</a>
<a name="l00054"></a>00054 {
<a name="l00055"></a>00055 <span class="keyword">public</span>:
<a name="l00056"></a>00056
<a name="l00057"></a>00057 <a class="code" href="classgeos_1_1algorithm_1_1distance_1_1PointPairDistance.html">PointPairDistance</a>()
<a name="l00058"></a>00058 :
<a name="l00059"></a>00059 pt(2),
<a name="l00060"></a>00060 distance(DoubleNotANumber),
<a name="l00061"></a>00061 isNull(<span class="keyword">true</span>)
<a name="l00062"></a>00062 {
<a name="l00063"></a>00063 assert(pt.size() == 2);
<a name="l00064"></a>00064 }
<a name="l00065"></a>00065
<a name="l00066"></a>00066 <span class="keywordtype">void</span> initialize()
<a name="l00067"></a>00067 {
<a name="l00068"></a>00068 isNull = <span class="keyword">true</span>;
<a name="l00069"></a>00069 }
<a name="l00070"></a>00070
<a name="l00071"></a>00071 <span class="keywordtype">void</span> initialize(<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>& p0, <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="l00072"></a>00072 {
<a name="l00073"></a>00073 pt[0] = p0;
<a name="l00074"></a>00074 pt[1] = p1;
<a name="l00075"></a>00075 distance = p0.<a class="code" href="classgeos_1_1geom_1_1Coordinate.html#a9a30687133579e261178d099a238ef19">distance</a>(p1);
<a name="l00076"></a>00076 isNull = <span class="keyword">false</span>;
<a name="l00077"></a>00077 }
<a name="l00078"></a>00078
<a name="l00079"></a>00079 <span class="keywordtype">double</span> getDistance()<span class="keyword"> const</span>
<a name="l00080"></a>00080 <span class="keyword"> </span>{
<a name="l00081"></a>00081 <span class="keywordflow">return</span> distance;
<a name="l00082"></a>00082 }
<a name="l00083"></a>00083
<a name="l00084"></a>00084 <span class="keyword">const</span> std::vector<geom::Coordinate>& getCoordinates()<span class="keyword"> const</span>
<a name="l00085"></a>00085 <span class="keyword"> </span>{
<a name="l00086"></a>00086 <span class="keywordflow">return</span> pt;
<a name="l00087"></a>00087 }
<a name="l00088"></a>00088
<a name="l00089"></a>00089 <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>& getCoordinate(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i)<span class="keyword"> const</span>
<a name="l00090"></a>00090 <span class="keyword"> </span>{
<a name="l00091"></a>00091 assert(i<pt.size());
<a name="l00092"></a>00092 <span class="keywordflow">return</span> pt[i];
<a name="l00093"></a>00093 }
<a name="l00094"></a>00094
<a name="l00095"></a>00095 <span class="keywordtype">void</span> setMaximum(<span class="keyword">const</span> <a class="code" href="classgeos_1_1algorithm_1_1distance_1_1PointPairDistance.html">PointPairDistance</a>& ptDist)
<a name="l00096"></a>00096 {
<a name="l00097"></a>00097 setMaximum(ptDist.pt[0], ptDist.pt[1]);
<a name="l00098"></a>00098 }
<a name="l00099"></a>00099
<a name="l00100"></a>00100 <span class="keywordtype">void</span> setMaximum(<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>& p0, <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="l00101"></a>00101 {
<a name="l00102"></a>00102 <span class="keywordflow">if</span> (isNull) {
<a name="l00103"></a>00103 initialize(p0, p1);
<a name="l00104"></a>00104 <span class="keywordflow">return</span>;
<a name="l00105"></a>00105 }
<a name="l00106"></a>00106 <span class="keywordtype">double</span> dist = p0.<a class="code" href="classgeos_1_1geom_1_1Coordinate.html#a9a30687133579e261178d099a238ef19">distance</a>(p1);
<a name="l00107"></a>00107 <span class="keywordflow">if</span> (dist > distance)
<a name="l00108"></a>00108 initialize(p0, p1, dist);
<a name="l00109"></a>00109 }
<a name="l00110"></a>00110
<a name="l00111"></a>00111 <span class="keywordtype">void</span> setMinimum(<span class="keyword">const</span> <a class="code" href="classgeos_1_1algorithm_1_1distance_1_1PointPairDistance.html">PointPairDistance</a>& ptDist)
<a name="l00112"></a>00112 {
<a name="l00113"></a>00113 setMinimum(ptDist.pt[0], ptDist.pt[1]);
<a name="l00114"></a>00114 }
<a name="l00115"></a>00115
<a name="l00116"></a>00116 <span class="keywordtype">void</span> setMinimum(<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>& p0, <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="l00117"></a>00117 {
<a name="l00118"></a>00118 <span class="keywordflow">if</span> (isNull) {
<a name="l00119"></a>00119 initialize(p0, p1);
<a name="l00120"></a>00120 <span class="keywordflow">return</span>;
<a name="l00121"></a>00121 }
<a name="l00122"></a>00122 <span class="keywordtype">double</span> dist = p0.<a class="code" href="classgeos_1_1geom_1_1Coordinate.html#a9a30687133579e261178d099a238ef19">distance</a>(p1);
<a name="l00123"></a>00123 <span class="keywordflow">if</span> (dist < distance)
<a name="l00124"></a>00124 initialize(p0, p1, dist);
<a name="l00125"></a>00125 }
<a name="l00126"></a>00126
<a name="l00127"></a>00127 <span class="keyword">private</span>:
<a name="l00128"></a>00128
<a name="l00135"></a>00135 <span class="keywordtype">void</span> initialize(<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>& p0, <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="l00136"></a>00136 <span class="keywordtype">double</span> dist)
<a name="l00137"></a>00137 {
<a name="l00138"></a>00138 pt[0] = p0;
<a name="l00139"></a>00139 pt[1] = p1;
<a name="l00140"></a>00140 distance = dist;
<a name="l00141"></a>00141 isNull = <span class="keyword">false</span>;
<a name="l00142"></a>00142 }
<a name="l00143"></a>00143
<a name="l00144"></a>00144 std::vector<geom::Coordinate> pt;
<a name="l00145"></a>00145
<a name="l00146"></a>00146 <span class="keywordtype">double</span> distance;
<a name="l00147"></a>00147
<a name="l00148"></a>00148 <span class="keywordtype">bool</span> isNull;
<a name="l00149"></a>00149 };
<a name="l00150"></a>00150
<a name="l00151"></a>00151 } <span class="comment">// geos::algorithm::distance</span>
<a name="l00152"></a>00152 } <span class="comment">// geos::algorithm</span>
<a name="l00153"></a>00153 } <span class="comment">// geos</span>
<a name="l00154"></a>00154
<a name="l00155"></a>00155 <span class="preprocessor">#endif // GEOS_ALGORITHM_DISTANCE_POINTPAIRDISTANCE_H</span>
<a name="l00156"></a>00156 <span class="preprocessor"></span>
<a name="l00157"></a>00157 <span class="comment">/**********************************************************************</span>
<a name="l00158"></a>00158 <span class="comment"> * $Log$</span>
<a name="l00159"></a>00159 <span class="comment"> **********************************************************************/</span>
<a name="l00160"></a>00160
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