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<h1>DiscreteHausdorffDistance.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: DiscreteHausdorffDistance.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/DiscreteHausdorffDistance.java 1.5 (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_ALGORITHM_DISTANCE_DISCRETEHAUSDORFFDISTANCE_H</span>
<a name="l00021"></a>00021 <span class="preprocessor"></span><span class="preprocessor">#define GEOS_ALGORITHM_DISTANCE_DISCRETEHAUSDORFFDISTANCE_H</span>
<a name="l00022"></a>00022 <span class="preprocessor"></span>
<a name="l00023"></a>00023 <span class="preprocessor">#include <geos/algorithm/distance/PointPairDistance.h></span> <span class="comment">// for composition</span>
<a name="l00024"></a>00024 <span class="preprocessor">#include <geos/algorithm/distance/DistanceToPoint.h></span> <span class="comment">// for composition</span>
<a name="l00025"></a>00025 <span class="preprocessor">#include <geos/util/IllegalArgumentException.h></span> <span class="comment">// for inlines</span>
<a name="l00026"></a>00026 <span class="preprocessor">#include <geos/geom/Geometry.h></span> <span class="comment">// for inlines</span>
<a name="l00027"></a>00027 <span class="preprocessor">#include <geos/util/math.h></span> <span class="comment">// for inlines</span>
<a name="l00028"></a>00028 <span class="preprocessor">#include <geos/geom/CoordinateFilter.h></span> <span class="comment">// for inheritance</span>
<a name="l00029"></a>00029 <span class="preprocessor">#include <geos/geom/CoordinateSequenceFilter.h></span> <span class="comment">// for inheritance</span>
<a name="l00030"></a>00030
<a name="l00031"></a>00031 <span class="preprocessor">#include <cstddef></span>
<a name="l00032"></a>00032 <span class="preprocessor">#include <vector></span>
<a name="l00033"></a>00033
<a name="l00034"></a>00034 <span class="keyword">namespace </span>geos {
<a name="l00035"></a>00035 <span class="keyword">namespace </span>algorithm {
<a name="l00036"></a>00036 <span class="comment">//class RayCrossingCounter;</span>
<a name="l00037"></a>00037 }
<a name="l00038"></a>00038 <span class="keyword">namespace </span>geom {
<a name="l00039"></a>00039 <span class="keyword">class </span>Geometry;
<a name="l00040"></a>00040 <span class="keyword">class </span>Coordinate;
<a name="l00041"></a>00041 <span class="comment">//class CoordinateSequence; </span>
<a name="l00042"></a>00042 }
<a name="l00043"></a><a class="code" href="namespacegeos_1_1index.html">00043</a> <span class="keyword">namespace </span>index {
<a name="l00044"></a>00044 <span class="keyword">namespace </span>intervalrtree {
<a name="l00045"></a>00045 <span class="comment">//class SortedPackedIntervalRTree;</span>
<a name="l00046"></a>00046 }
<a name="l00047"></a>00047 }
<a name="l00048"></a>00048 }
<a name="l00049"></a>00049
<a name="l00050"></a>00050 <span class="keyword">namespace </span>geos {
<a name="l00051"></a>00051 <span class="keyword">namespace </span>algorithm { <span class="comment">// geos::algorithm</span>
<a name="l00052"></a>00052 <span class="keyword">namespace </span>distance { <span class="comment">// geos::algorithm::distance</span>
<a name="l00053"></a>00053
<a name="l00095"></a><a class="code" href="classgeos_1_1algorithm_1_1distance_1_1DiscreteHausdorffDistance.html">00095</a> <span class="keyword">class </span><a class="code" href="classgeos_1_1algorithm_1_1distance_1_1DiscreteHausdorffDistance.html" title="An algorithm for computing a distance metric which is an approximation to the Hausdorff Distance base...">DiscreteHausdorffDistance</a>
<a name="l00096"></a>00096 {
<a name="l00097"></a>00097 <span class="keyword">public</span>:
<a name="l00098"></a>00098
<a name="l00099"></a>00099 <span class="keyword">static</span> <span class="keywordtype">double</span> distance(<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="l00100"></a>00100 <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="l00101"></a>00101
<a name="l00102"></a>00102 <span class="keyword">static</span> <span class="keywordtype">double</span> distance(<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="l00103"></a>00103 <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, <span class="keywordtype">double</span> densifyFrac);
<a name="l00104"></a>00104
<a name="l00105"></a>00105 <a class="code" href="classgeos_1_1algorithm_1_1distance_1_1DiscreteHausdorffDistance.html" title="An algorithm for computing a distance metric which is an approximation to the Hausdorff Distance base...">DiscreteHausdorffDistance</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,
<a name="l00106"></a>00106 <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="l00107"></a>00107 :
<a name="l00108"></a>00108 g0(g0),
<a name="l00109"></a>00109 g1(g1),
<a name="l00110"></a>00110 ptDist(),
<a name="l00111"></a>00111 densifyFrac(0.0)
<a name="l00112"></a>00112 {}
<a name="l00113"></a>00113
<a name="l00122"></a><a class="code" href="classgeos_1_1algorithm_1_1distance_1_1DiscreteHausdorffDistance.html#a83c84f436933402aae360a3115336416">00122</a> <span class="keywordtype">void</span> <a class="code" href="classgeos_1_1algorithm_1_1distance_1_1DiscreteHausdorffDistance.html#a83c84f436933402aae360a3115336416">setDensifyFraction</a>(<span class="keywordtype">double</span> dFrac)
<a name="l00123"></a>00123 {
<a name="l00124"></a>00124 <span class="keywordflow">if</span> ( dFrac > 1.0 || dFrac <= 0.0 )
<a name="l00125"></a>00125 {
<a name="l00126"></a>00126 <span class="keywordflow">throw</span> <a class="code" href="classgeos_1_1util_1_1IllegalArgumentException.html" title="Indicates one or more legal arguments.">util::IllegalArgumentException</a>(
<a name="l00127"></a>00127 <span class="stringliteral">"Fraction is not in range (0.0 - 1.0]"</span>);
<a name="l00128"></a>00128 }
<a name="l00129"></a>00129
<a name="l00130"></a>00130 densifyFrac = dFrac;
<a name="l00131"></a>00131 }
<a name="l00132"></a>00132
<a name="l00133"></a>00133 <span class="keywordtype">double</span> distance()
<a name="l00134"></a>00134 {
<a name="l00135"></a>00135 compute(g0, g1);
<a name="l00136"></a>00136 <span class="keywordflow">return</span> ptDist.getDistance();
<a name="l00137"></a>00137 }
<a name="l00138"></a>00138
<a name="l00139"></a>00139 <span class="keywordtype">double</span> orientedDistance()
<a name="l00140"></a>00140 {
<a name="l00141"></a>00141 computeOrientedDistance(g0, g1, ptDist);
<a name="l00142"></a>00142 <span class="keywordflow">return</span> ptDist.getDistance();
<a name="l00143"></a>00143 }
<a name="l00144"></a>00144
<a name="l00145"></a>00145 <span class="keyword">const</span> std::vector<geom::Coordinate> getCoordinates()<span class="keyword"> const</span>
<a name="l00146"></a>00146 <span class="keyword"> </span>{
<a name="l00147"></a>00147 <span class="keywordflow">return</span> ptDist.getCoordinates();
<a name="l00148"></a>00148 }
<a name="l00149"></a>00149
<a name="l00150"></a>00150 <span class="keyword">class </span>MaxPointDistanceFilter : <span class="keyword">public</span> geom::CoordinateFilter
<a name="l00151"></a>00151 {
<a name="l00152"></a>00152 <span class="keyword">public</span>:
<a name="l00153"></a>00153 MaxPointDistanceFilter(<span class="keyword">const</span> geom::Geometry& geom)
<a name="l00154"></a>00154 :
<a name="l00155"></a>00155 geom(geom)
<a name="l00156"></a>00156 {}
<a name="l00157"></a>00157
<a name="l00158"></a>00158 <span class="keywordtype">void</span> filter_ro(<span class="keyword">const</span> geom::Coordinate* pt)
<a name="l00159"></a>00159 {
<a name="l00160"></a>00160 minPtDist.initialize();
<a name="l00161"></a>00161 DistanceToPoint::computeDistance(geom, *pt,
<a name="l00162"></a>00162 minPtDist);
<a name="l00163"></a>00163 maxPtDist.setMaximum(minPtDist);
<a name="l00164"></a>00164 }
<a name="l00165"></a>00165
<a name="l00166"></a>00166 <span class="keyword">const</span> PointPairDistance& getMaxPointDistance()<span class="keyword"> const</span>
<a name="l00167"></a>00167 <span class="keyword"> </span>{
<a name="l00168"></a>00168 <span class="keywordflow">return</span> maxPtDist;
<a name="l00169"></a>00169 }
<a name="l00170"></a>00170
<a name="l00171"></a>00171 <span class="keyword">private</span>:
<a name="l00172"></a>00172 PointPairDistance maxPtDist;
<a name="l00173"></a>00173 PointPairDistance minPtDist;
<a name="l00174"></a>00174 DistanceToPoint euclideanDist;
<a name="l00175"></a>00175 <span class="keyword">const</span> geom::Geometry& geom;
<a name="l00176"></a>00176
<a name="l00177"></a>00177 <span class="comment">// Declare type as noncopyable</span>
<a name="l00178"></a>00178 MaxPointDistanceFilter(<span class="keyword">const</span> MaxPointDistanceFilter& other);
<a name="l00179"></a>00179 MaxPointDistanceFilter& operator=(<span class="keyword">const</span> MaxPointDistanceFilter& rhs);
<a name="l00180"></a>00180 };
<a name="l00181"></a>00181
<a name="l00182"></a>00182 <span class="keyword">class </span>MaxDensifiedByFractionDistanceFilter
<a name="l00183"></a>00183 : <span class="keyword">public</span> geom::CoordinateSequenceFilter
<a name="l00184"></a>00184 {
<a name="l00185"></a>00185 <span class="keyword">public</span>:
<a name="l00186"></a>00186
<a name="l00187"></a>00187 MaxDensifiedByFractionDistanceFilter(
<a name="l00188"></a>00188 <span class="keyword">const</span> geom::Geometry& geom, <span class="keywordtype">double</span> fraction)
<a name="l00189"></a>00189 :
<a name="l00190"></a>00190 geom(geom),
<a name="l00191"></a>00191 numSubSegs( std::size_t(util::round(1.0/fraction)) )
<a name="l00192"></a>00192 {
<a name="l00193"></a>00193 }
<a name="l00194"></a>00194
<a name="l00195"></a>00195 <span class="keywordtype">void</span> <a class="code" href="classgeos_1_1geom_1_1CoordinateSequenceFilter.html#adf14c00a8cfea460caf9d920c8052ccc">filter_ro</a>(<span class="keyword">const</span> geom::CoordinateSequence& seq,
<a name="l00196"></a>00196 std::size_t index);
<a name="l00197"></a>00197
<a name="l00198"></a>00198 <span class="keywordtype">bool</span> isGeometryChanged()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> <span class="keyword">false</span>; }
<a name="l00199"></a>00199
<a name="l00200"></a>00200 <span class="keywordtype">bool</span> isDone()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> <span class="keyword">false</span>; }
<a name="l00201"></a>00201
<a name="l00202"></a>00202 <span class="keyword">const</span> PointPairDistance& getMaxPointDistance()<span class="keyword"> const </span>{
<a name="l00203"></a>00203 <span class="keywordflow">return</span> maxPtDist;
<a name="l00204"></a>00204 }
<a name="l00205"></a>00205
<a name="l00206"></a>00206 <span class="keyword">private</span>:
<a name="l00207"></a>00207 PointPairDistance maxPtDist;
<a name="l00208"></a>00208 PointPairDistance minPtDist;
<a name="l00209"></a>00209 <span class="keyword">const</span> geom::Geometry& geom;
<a name="l00210"></a>00210 std::size_t numSubSegs; <span class="comment">// = 0;</span>
<a name="l00211"></a>00211
<a name="l00212"></a>00212 <span class="comment">// Declare type as noncopyable</span>
<a name="l00213"></a>00213 MaxDensifiedByFractionDistanceFilter(<span class="keyword">const</span> MaxDensifiedByFractionDistanceFilter& other);
<a name="l00214"></a>00214 MaxDensifiedByFractionDistanceFilter& operator=(<span class="keyword">const</span> MaxDensifiedByFractionDistanceFilter& rhs);
<a name="l00215"></a>00215 };
<a name="l00216"></a>00216
<a name="l00217"></a>00217 <span class="keyword">private</span>:
<a name="l00218"></a>00218
<a name="l00219"></a>00219 <span class="keywordtype">void</span> compute(<span class="keyword">const</span> geom::Geometry& g0,
<a name="l00220"></a>00220 <span class="keyword">const</span> geom::Geometry& g1)
<a name="l00221"></a>00221 {
<a name="l00222"></a>00222 computeOrientedDistance(g0, g1, ptDist);
<a name="l00223"></a>00223 computeOrientedDistance(g1, g0, ptDist);
<a name="l00224"></a>00224 }
<a name="l00225"></a>00225
<a name="l00226"></a>00226 <span class="keywordtype">void</span> computeOrientedDistance(<span class="keyword">const</span> geom::Geometry& discreteGeom,
<a name="l00227"></a>00227 <span class="keyword">const</span> geom::Geometry& geom,
<a name="l00228"></a>00228 PointPairDistance& ptDist);
<a name="l00229"></a>00229
<a name="l00230"></a>00230 <span class="keyword">const</span> geom::Geometry& g0;
<a name="l00231"></a>00231
<a name="l00232"></a>00232 <span class="keyword">const</span> geom::Geometry& g1;
<a name="l00233"></a>00233
<a name="l00234"></a>00234 PointPairDistance ptDist;
<a name="l00235"></a>00235
<a name="l00237"></a>00237 <span class="keywordtype">double</span> densifyFrac; <span class="comment">// = 0.0;</span>
<a name="l00238"></a>00238
<a name="l00239"></a>00239 <span class="comment">// Declare type as noncopyable</span>
<a name="l00240"></a>00240 DiscreteHausdorffDistance(<span class="keyword">const</span> DiscreteHausdorffDistance& other);
<a name="l00241"></a>00241 DiscreteHausdorffDistance& operator=(<span class="keyword">const</span> DiscreteHausdorffDistance& rhs);
<a name="l00242"></a>00242 };
<a name="l00243"></a>00243
<a name="l00244"></a>00244
<a name="l00245"></a>00245
<a name="l00246"></a>00246 } <span class="comment">// geos::algorithm::distance</span>
<a name="l00247"></a>00247 } <span class="comment">// geos::algorithm</span>
<a name="l00248"></a>00248 } <span class="comment">// geos</span>
<a name="l00249"></a>00249
<a name="l00250"></a>00250 <span class="preprocessor">#endif // GEOS_ALGORITHM_DISTANCE_DISCRETEHAUSDORFFDISTANCE_H</span>
<a name="l00251"></a>00251 <span class="preprocessor"></span>
<a name="l00252"></a>00252 <span class="comment">/**********************************************************************</span>
<a name="l00253"></a>00253 <span class="comment"> * $Log$</span>
<a name="l00254"></a>00254 <span class="comment"> **********************************************************************/</span>
<a name="l00255"></a>00255
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