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<h1>PointLocator.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: PointLocator.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
<a name="l00017"></a>00017 <span class="preprocessor">#ifndef GEOS_ALGORITHM_POINTLOCATOR_H</span>
<a name="l00018"></a>00018 <span class="preprocessor"></span><span class="preprocessor">#define GEOS_ALGORITHM_POINTLOCATOR_H</span>
<a name="l00019"></a>00019 <span class="preprocessor"></span>
<a name="l00020"></a>00020 <span class="preprocessor">#include <geos/export.h></span>
<a name="l00021"></a>00021 <span class="preprocessor">#include <geos/geom/Location.h></span> <span class="comment">// for inlines</span>
<a name="l00022"></a>00022
<a name="l00023"></a>00023 <span class="comment">// Forward declarations</span>
<a name="l00024"></a>00024 <span class="keyword">namespace </span>geos {
<a name="l00025"></a>00025 <span class="keyword">namespace </span>geom {
<a name="l00026"></a>00026 <span class="keyword">class </span>Coordinate;
<a name="l00027"></a>00027 <span class="keyword">class </span>Geometry;
<a name="l00028"></a>00028 <span class="keyword">class </span>LinearRing;
<a name="l00029"></a>00029 <span class="keyword">class </span>LineString;
<a name="l00030"></a>00030 <span class="keyword">class </span>Polygon;
<a name="l00031"></a>00031 }
<a name="l00032"></a>00032 }
<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 { <span class="comment">// geos::algorithm</span>
<a name="l00036"></a>00036
<a name="l00054"></a><a class="code" href="classgeos_1_1algorithm_1_1PointLocator.html">00054</a> <span class="keyword">class </span>GEOS_DLL <a class="code" href="classgeos_1_1algorithm_1_1PointLocator.html" title="Computes the topological relationship (Location) of a single point to a Geometry.">PointLocator</a> {
<a name="l00055"></a>00055 <span class="keyword">public</span>:
<a name="l00056"></a>00056 <a class="code" href="classgeos_1_1algorithm_1_1PointLocator.html" title="Computes the topological relationship (Location) of a single point to a Geometry.">PointLocator</a>() {}
<a name="l00057"></a>00057 ~<a class="code" href="classgeos_1_1algorithm_1_1PointLocator.html" title="Computes the topological relationship (Location) of a single point to a Geometry.">PointLocator</a>() {}
<a name="l00058"></a>00058
<a name="l00069"></a>00069 <span class="keywordtype">int</span> locate(<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, <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> *geom);
<a name="l00070"></a>00070
<a name="l00079"></a><a class="code" href="classgeos_1_1algorithm_1_1PointLocator.html#aa1b29c8c5eb9d5a9e28a597e37de8601">00079</a> <span class="keywordtype">bool</span> <a class="code" href="classgeos_1_1algorithm_1_1PointLocator.html#aa1b29c8c5eb9d5a9e28a597e37de8601">intersects</a>(<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, <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> *geom) {
<a name="l00080"></a>00080 <span class="keywordflow">return</span> locate(p, geom) != geom::Location::EXTERIOR;
<a name="l00081"></a>00081 }
<a name="l00082"></a>00082
<a name="l00083"></a>00083 <span class="keyword">private</span>:
<a name="l00084"></a>00084
<a name="l00085"></a>00085 <span class="keywordtype">bool</span> isIn; <span class="comment">// true if the point lies in or on any Geometry element</span>
<a name="l00086"></a>00086
<a name="l00087"></a>00087 <span class="keywordtype">int</span> numBoundaries; <span class="comment">// the number of sub-elements whose boundaries the point lies in</span>
<a name="l00088"></a>00088
<a name="l00089"></a>00089 <span class="keywordtype">void</span> computeLocation(<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, <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> *geom);
<a name="l00090"></a>00090
<a name="l00091"></a>00091 <span class="keywordtype">void</span> updateLocationInfo(<span class="keywordtype">int</span> loc);
<a name="l00092"></a>00092
<a name="l00093"></a>00093 <span class="keywordtype">int</span> locate(<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, <span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1LineString.html" title="Basic implementation of LineString.">geom::LineString</a> *l);
<a name="l00094"></a>00094
<a name="l00095"></a>00095 <span class="keywordtype">int</span> locateInPolygonRing(<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, <span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1LinearRing.html" title="Models an OGC SFS LinearRing.">geom::LinearRing</a> *ring);
<a name="l00096"></a>00096
<a name="l00097"></a>00097 <span class="keywordtype">int</span> locate(<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, <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="l00098"></a>00098
<a name="l00099"></a>00099 };
<a name="l00100"></a>00100
<a name="l00101"></a>00101 } <span class="comment">// namespace geos::algorithm</span>
<a name="l00102"></a>00102 } <span class="comment">// namespace geos</span>
<a name="l00103"></a>00103
<a name="l00104"></a>00104
<a name="l00105"></a>00105 <span class="preprocessor">#endif // GEOS_ALGORITHM_POINTLOCATOR_H</span>
<a name="l00106"></a>00106 <span class="preprocessor"></span>
<a name="l00107"></a>00107 <span class="comment">/**********************************************************************</span>
<a name="l00108"></a>00108 <span class="comment"> * $Log$</span>
<a name="l00109"></a>00109 <span class="comment"> * Revision 1.1 2006/03/09 16:46:48 strk</span>
<a name="l00110"></a>00110 <span class="comment"> * geos::geom namespace definition, first pass at headers split</span>
<a name="l00111"></a>00111 <span class="comment"> *</span>
<a name="l00112"></a>00112 <span class="comment"> **********************************************************************/</span>
<a name="l00113"></a>00113
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