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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/> <meta http-equiv="X-UA-Compatible" content="IE=9"/> <meta name="generator" content="Doxygen 1.8.5"/> <title>GEOS: LengthLocationMap.h Source File</title> <link href="tabs.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="jquery.js"></script> <script type="text/javascript" src="dynsections.js"></script> <link href="doxygen.css" rel="stylesheet" type="text/css" /> </head> <body> <div id="top"><!-- do not remove this div, it is closed by doxygen! --> <div id="titlearea"> <table cellspacing="0" cellpadding="0"> <tbody> <tr style="height: 56px;"> <td style="padding-left: 0.5em;"> <div id="projectname">GEOS  <span id="projectnumber">3.5.0</span> </div> </td> </tr> </tbody> </table> </div> <!-- end header part --> <!-- Generated by Doxygen 1.8.5 --> <div id="navrow1" class="tabs"> <ul class="tablist"> <li><a href="index.html"><span>Main Page</span></a></li> <li><a href="pages.html"><span>Related Pages</span></a></li> <li><a href="namespaces.html"><span>Namespaces</span></a></li> <li><a href="annotated.html"><span>Classes</span></a></li> <li class="current"><a href="files.html"><span>Files</span></a></li> </ul> </div> <div id="navrow2" class="tabs2"> <ul class="tablist"> <li><a href="files.html"><span>File List</span></a></li> </ul> </div> <div id="nav-path" class="navpath"> <ul> <li class="navelem"><a class="el" href="dir_78009f08da3e03d86b70776dcc463e92.html">include</a></li><li class="navelem"><a class="el" href="dir_40c9e98f0599f998dfc16f8b0ec4bf37.html">geos</a></li><li class="navelem"><a class="el" href="dir_33ab82ab366d28e0c899d5be4fdea085.html">linearref</a></li> </ul> </div> </div><!-- top --> <div class="header"> <div class="headertitle"> <div class="title">LengthLocationMap.h</div> </div> </div><!--header--> <div class="contents"> <div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/**********************************************************************</span></div> <div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> *</span></div> <div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * GEOS - Geometry Engine Open Source</span></div> <div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * http://geos.osgeo.org</span></div> <div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> *</span></div> <div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * Copyright (C) 2011 Sandro Santilli <strk@keybit.net></span></div> <div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * Copyright (C) 2005-2006 Refractions Research Inc.</span></div> <div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * Copyright (C) 2001-2002 Vivid Solutions Inc.</span></div> <div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> *</span></div> <div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> * This is free software; you can redistribute and/or modify it under</span></div> <div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * the terms of the GNU Lesser General Public Licence as published</span></div> <div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * by the Free Software Foundation.</span></div> <div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * See the COPYING file for more information.</span></div> <div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> *</span></div> <div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> **********************************************************************</span></div> <div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> *</span></div> <div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * Last port: linearref/LengthLocationMap.java r463</span></div> <div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> *</span></div> <div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> **********************************************************************/</span></div> <div class="line"><a name="l00020"></a><span class="lineno"> 20</span> </div> <div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#ifndef GEOS_LINEARREF_LENGTHLOCATIONMAP_H</span></div> <div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor"></span><span class="preprocessor">#define GEOS_LINEARREF_LENGTHLOCATIONMAP_H</span></div> <div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor"></span></div> <div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#include <geos/geom/Coordinate.h></span></div> <div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include <geos/geom/Geometry.h></span></div> <div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#include <geos/linearref/LinearLocation.h></span></div> <div class="line"><a name="l00027"></a><span class="lineno"> 27</span> </div> <div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="keyword">namespace </span>geos {</div> <div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="keyword">namespace </span>linearref { <span class="comment">// geos::linearref</span></div> <div class="line"><a name="l00030"></a><span class="lineno"> 30</span> </div> <div class="line"><a name="l00037"></a><span class="lineno"><a class="line" href="classgeos_1_1linearref_1_1LengthLocationMap.html"> 37</a></span> <span class="keyword">class </span><a class="code" href="classgeos_1_1linearref_1_1LengthLocationMap.html">LengthLocationMap</a></div> <div class="line"><a name="l00038"></a><span class="lineno"> 38</span> {</div> <div class="line"><a name="l00039"></a><span class="lineno"> 39</span> </div> <div class="line"><a name="l00040"></a><span class="lineno"> 40</span> </div> <div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="keyword">private</span>:</div> <div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Geometry.html">geom::Geometry</a> *linearGeom;</div> <div class="line"><a name="l00043"></a><span class="lineno"> 43</span> </div> <div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <a class="code" href="classgeos_1_1linearref_1_1LinearLocation.html">LinearLocation</a> getLocationForward(<span class="keywordtype">double</span> length) <span class="keyword">const</span>;</div> <div class="line"><a name="l00045"></a><span class="lineno"> 45</span> </div> <div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <a class="code" href="classgeos_1_1linearref_1_1LinearLocation.html">LinearLocation</a> resolveHigher(<span class="keyword">const</span> <a class="code" href="classgeos_1_1linearref_1_1LinearLocation.html">LinearLocation</a>& loc) <span class="keyword">const</span>;</div> <div class="line"><a name="l00047"></a><span class="lineno"> 47</span> </div> <div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="keyword">public</span>:</div> <div class="line"><a name="l00049"></a><span class="lineno"> 49</span> </div> <div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="comment">// TODO: cache computed cumulative length for each vertex</span></div> <div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="comment">// TODO: support user-defined measures</span></div> <div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="comment">// TODO: support measure index for fast mapping to a location</span></div> <div class="line"><a name="l00053"></a><span class="lineno"> 53</span> </div> <div class="line"><a name="l00063"></a><span class="lineno"><a class="line" href="classgeos_1_1linearref_1_1LengthLocationMap.html#ad1d7efe751b46d58b3882520493a191a"> 63</a></span>  <span class="keyword">static</span> <a class="code" href="classgeos_1_1linearref_1_1LinearLocation.html">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">geom::Geometry</a> *linearGeom, <span class="keywordtype">double</span> length)</div> <div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  {</div> <div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <a class="code" href="classgeos_1_1linearref_1_1LengthLocationMap.html">LengthLocationMap</a> locater(linearGeom);</div> <div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keywordflow">return</span> locater.<a class="code" href="classgeos_1_1linearref_1_1LengthLocationMap.html#ad1d7efe751b46d58b3882520493a191a">getLocation</a>(length);</div> <div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  }</div> <div class="line"><a name="l00068"></a><span class="lineno"> 68</span> </div> <div class="line"><a name="l00080"></a><span class="lineno"><a class="line" href="classgeos_1_1linearref_1_1LengthLocationMap.html#a5cce691512a3f756daa90e423fc5a020"> 80</a></span>  <span class="keyword">static</span> <a class="code" href="classgeos_1_1linearref_1_1LinearLocation.html">LinearLocation</a> <a class="code" href="classgeos_1_1linearref_1_1LengthLocationMap.html#a5cce691512a3f756daa90e423fc5a020">getLocation</a>(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Geometry.html">geom::Geometry</a> *linearGeom, <span class="keywordtype">double</span> length, <span class="keywordtype">bool</span> resolveLower)</div> <div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  {</div> <div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <a class="code" href="classgeos_1_1linearref_1_1LengthLocationMap.html">LengthLocationMap</a> locater(linearGeom);</div> <div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="keywordflow">return</span> locater.<a class="code" href="classgeos_1_1linearref_1_1LengthLocationMap.html#ad1d7efe751b46d58b3882520493a191a">getLocation</a>(length, resolveLower);</div> <div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  }</div> <div class="line"><a name="l00085"></a><span class="lineno"> 85</span> </div> <div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <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">geom::Geometry</a> *linearGeom, <span class="keyword">const</span> <a class="code" href="classgeos_1_1linearref_1_1LinearLocation.html">LinearLocation</a>& loc);</div> <div class="line"><a name="l00095"></a><span class="lineno"> 95</span> </div> <div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <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">geom::Geometry</a> *linearGeom);</div> <div class="line"><a name="l00097"></a><span class="lineno"> 97</span> </div> <div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <a class="code" href="classgeos_1_1linearref_1_1LinearLocation.html">LinearLocation</a> <a class="code" href="classgeos_1_1linearref_1_1LengthLocationMap.html#ad1d7efe751b46d58b3882520493a191a">getLocation</a>(<span class="keywordtype">double</span> length, <span class="keywordtype">bool</span> resolveLower) <span class="keyword">const</span>;</div> <div class="line"><a name="l00111"></a><span class="lineno"> 111</span> </div> <div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  <a class="code" href="classgeos_1_1linearref_1_1LinearLocation.html">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>;</div> <div class="line"><a name="l00124"></a><span class="lineno"> 124</span> </div> <div class="line"><a name="l00125"></a><span class="lineno"> 125</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_1linearref_1_1LinearLocation.html">LinearLocation</a>& loc) <span class="keyword">const</span>;</div> <div class="line"><a name="l00126"></a><span class="lineno"> 126</span> </div> <div class="line"><a name="l00127"></a><span class="lineno"> 127</span> };</div> <div class="line"><a name="l00128"></a><span class="lineno"> 128</span> </div> <div class="line"><a name="l00129"></a><span class="lineno"> 129</span> } <span class="comment">// geos.linearref</span></div> <div class="line"><a name="l00130"></a><span class="lineno"> 130</span> } <span class="comment">// geos</span></div> <div class="line"><a name="l00131"></a><span class="lineno"> 131</span> </div> <div class="line"><a name="l00132"></a><span class="lineno"> 132</span> <span class="preprocessor">#endif</span></div> <div class="ttc" id="classgeos_1_1linearref_1_1LengthLocationMap_html_ad1d7efe751b46d58b3882520493a191a"><div class="ttname"><a href="classgeos_1_1linearref_1_1LengthLocationMap.html#ad1d7efe751b46d58b3882520493a191a">geos::linearref::LengthLocationMap::getLocation</a></div><div class="ttdeci">static LinearLocation getLocation(const geom::Geometry *linearGeom, double length)</div><div class="ttdoc">Computes the LinearLocation for a given length along a linear Geometry. </div><div class="ttdef"><b>Definition:</b> LengthLocationMap.h:63</div></div> <div class="ttc" id="classgeos_1_1linearref_1_1LengthLocationMap_html_a84c50d3b08e0c48c16feb1af0ba77434"><div class="ttname"><a href="classgeos_1_1linearref_1_1LengthLocationMap.html#a84c50d3b08e0c48c16feb1af0ba77434">geos::linearref::LengthLocationMap::getLength</a></div><div class="ttdeci">static double getLength(const geom::Geometry *linearGeom, const LinearLocation &loc)</div></div> <div class="ttc" id="classgeos_1_1linearref_1_1LengthLocationMap_html_a5cce691512a3f756daa90e423fc5a020"><div class="ttname"><a href="classgeos_1_1linearref_1_1LengthLocationMap.html#a5cce691512a3f756daa90e423fc5a020">geos::linearref::LengthLocationMap::getLocation</a></div><div class="ttdeci">static LinearLocation getLocation(const geom::Geometry *linearGeom, double length, bool resolveLower)</div><div class="ttdoc">Computes the LinearLocation for a given length along a linear Geometry. </div><div class="ttdef"><b>Definition:</b> LengthLocationMap.h:80</div></div> <div class="ttc" id="classgeos_1_1geom_1_1Geometry_html"><div class="ttname"><a href="classgeos_1_1geom_1_1Geometry.html">geos::geom::Geometry</a></div><div class="ttdoc">Basic implementation of Geometry, constructed and destructed by GeometryFactory. </div><div class="ttdef"><b>Definition:</b> Geometry.h:167</div></div> <div class="ttc" id="classgeos_1_1linearref_1_1LinearLocation_html"><div class="ttname"><a href="classgeos_1_1linearref_1_1LinearLocation.html">geos::linearref::LinearLocation</a></div><div class="ttdoc">Represents a location along a LineString or MultiLineString. </div><div class="ttdef"><b>Definition:</b> LinearLocation.h:43</div></div> <div class="ttc" id="classgeos_1_1linearref_1_1LengthLocationMap_html"><div class="ttname"><a href="classgeos_1_1linearref_1_1LengthLocationMap.html">geos::linearref::LengthLocationMap</a></div><div class="ttdef"><b>Definition:</b> LengthLocationMap.h:37</div></div> </div><!-- fragment --></div><!-- 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