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<h1>LengthLocationMap.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: LengthLocationMap.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) 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: linearref/LengthLocationMap.java rev. 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 <span class="preprocessor">#ifndef GEOS_LINEARREF_LENGTHLOCATIONMAP_H</span>
<a name="l00022"></a>00022 <span class="preprocessor"></span><span class="preprocessor">#define GEOS_LINEARREF_LENGTHLOCATIONMAP_H</span>
<a name="l00023"></a>00023 <span class="preprocessor"></span>
<a name="l00024"></a>00024 <span class="preprocessor">#include <geos/geom/Coordinate.h></span>
<a name="l00025"></a>00025 <span class="preprocessor">#include <geos/geom/Geometry.h></span>
<a name="l00026"></a>00026 <span class="preprocessor">#include <geos/linearref/LinearLocation.h></span>
<a name="l00027"></a>00027
<a name="l00028"></a>00028 <span class="keyword">namespace </span>geos
<a name="l00029"></a>00029 {
<a name="l00030"></a>00030 <span class="keyword">namespace </span>linearref <span class="comment">// geos::linearref</span>
<a name="l00031"></a>00031 {
<a name="l00032"></a>00032
<a name="l00039"></a><a class="code" href="classgeos_1_1linearref_1_1LengthLocationMap.html">00039</a> <span class="keyword">class </span><a class="code" href="classgeos_1_1linearref_1_1LengthLocationMap.html">LengthLocationMap</a>
<a name="l00040"></a>00040 {
<a name="l00041"></a>00041
<a name="l00042"></a>00042
<a name="l00043"></a>00043 <span class="keyword">private</span>:
<a name="l00044"></a>00044 <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> *linearGeom;
<a name="l00045"></a>00045
<a name="l00046"></a>00046 <a class="code" href="classgeos_1_1linearref_1_1LinearLocation.html" title="Represents a location along a LineString or MultiLineString.">LinearLocation</a> getLocationForward(<span class="keywordtype">double</span> length) <span class="keyword">const</span>;
<a name="l00047"></a>00047
<a name="l00048"></a>00048 <span class="keyword">public</span>:
<a name="l00049"></a>00049
<a name="l00050"></a>00050 <span class="comment">// TODO: cache computed cumulative length for each vertex</span>
<a name="l00051"></a>00051 <span class="comment">// TODO: support user-defined measures</span>
<a name="l00052"></a>00052 <span class="comment">// TODO: support measure index for fast mapping to a location</span>
<a name="l00053"></a>00053
<a name="l00062"></a>00062 <span class="keyword">static</span> <a class="code" href="classgeos_1_1linearref_1_1LinearLocation.html" title="Represents a location along a LineString or MultiLineString.">LinearLocation</a> <a class="code" href="classgeos_1_1linearref_1_1LengthLocationMap.html#ad1d7efe751b46d58b3882520493a191a">getLocation</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> *linearGeom, <span class="keywordtype">double</span> length);
<a name="l00063"></a>00063
<a name="l00072"></a>00072 <span class="keyword">static</span> <span class="keywordtype">double</span> <a class="code" href="classgeos_1_1linearref_1_1LengthLocationMap.html#a84c50d3b08e0c48c16feb1af0ba77434">getLength</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> *linearGeom, <span class="keyword">const</span> <a class="code" href="classgeos_1_1linearref_1_1LinearLocation.html" title="Represents a location along a LineString or MultiLineString.">LinearLocation</a>& loc);
<a name="l00073"></a>00073
<a name="l00074"></a>00074 <a class="code" href="classgeos_1_1linearref_1_1LengthLocationMap.html">LengthLocationMap</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> *linearGeom);
<a name="l00075"></a>00075
<a name="l00084"></a>00084 <a class="code" href="classgeos_1_1linearref_1_1LinearLocation.html" title="Represents a location along a LineString or MultiLineString.">LinearLocation</a> <a class="code" href="classgeos_1_1linearref_1_1LengthLocationMap.html#ad1d7efe751b46d58b3882520493a191a">getLocation</a>(<span class="keywordtype">double</span> length) <span class="keyword">const</span>;
<a name="l00085"></a>00085
<a name="l00086"></a>00086 <span class="keywordtype">double</span> <a class="code" href="classgeos_1_1linearref_1_1LengthLocationMap.html#a84c50d3b08e0c48c16feb1af0ba77434">getLength</a>(<span class="keyword">const</span> <a class="code" href="classgeos_1_1linearref_1_1LinearLocation.html" title="Represents a location along a LineString or MultiLineString.">LinearLocation</a>& loc) <span class="keyword">const</span>;
<a name="l00087"></a>00087
<a name="l00088"></a>00088 };
<a name="l00089"></a>00089 }
<a name="l00090"></a>00090 }
<a name="l00091"></a>00091 <span class="preprocessor">#endif</span>
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