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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: RayCrossingCounter.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 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</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) 2006 Refractions Research Inc.</span></div> <div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> *</span></div> <div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * This is free software; you can redistribute and/or modify it under</span></div> <div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * the terms of the GNU Lesser General Public Licence as published</span></div> <div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> * by the Free Software Foundation. </span></div> <div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * See the COPYING file for more information.</span></div> <div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> *</span></div> <div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> *</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"> * Last port: algorithm/RayCrossingCounter.java rev. 1.2 (JTS-1.9)</span></div> <div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> *</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> </div> <div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor">#ifndef GEOS_ALGORITHM_RAYCROSSINGCOUNTER_H</span></div> <div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor"></span><span class="preprocessor">#define GEOS_ALGORITHM_RAYCROSSINGCOUNTER_H</span></div> <div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor"></span></div> <div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#include <geos/export.h></span></div> <div class="line"><a name="l00024"></a><span class="lineno"> 24</span> </div> <div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include <vector></span></div> <div class="line"><a name="l00026"></a><span class="lineno"> 26</span> </div> <div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment">// forward declarations</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>geom {</div> <div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  <span class="keyword">class </span>Coordinate;</div> <div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  <span class="keyword">class </span>CoordinateSequence;</div> <div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  }</div> <div class="line"><a name="l00033"></a><span class="lineno"> 33</span> }</div> <div class="line"><a name="l00034"></a><span class="lineno"> 34</span> </div> <div class="line"><a name="l00035"></a><span class="lineno"> 35</span> </div> <div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="keyword">namespace </span>geos {</div> <div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="keyword">namespace </span>algorithm {</div> <div class="line"><a name="l00038"></a><span class="lineno"> 38</span> </div> <div class="line"><a name="l00066"></a><span class="lineno"><a class="line" href="classgeos_1_1algorithm_1_1RayCrossingCounter.html"> 66</a></span> <span class="keyword">class </span>GEOS_DLL <a class="code" href="classgeos_1_1algorithm_1_1RayCrossingCounter.html">RayCrossingCounter</a> </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> <span class="keyword">private</span>:</div> <div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a>& point;</div> <div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  </div> <div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="keywordtype">int</span> crossingCount;</div> <div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  </div> <div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="comment">// true if the test point lies on an input segment</span></div> <div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="keywordtype">bool</span> isPointOnSegment;</div> <div class="line"><a name="l00075"></a><span class="lineno"> 75</span> </div> <div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="comment">// Declare type as noncopyable</span></div> <div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <a class="code" href="classgeos_1_1algorithm_1_1RayCrossingCounter.html">RayCrossingCounter</a>(<span class="keyword">const</span> <a class="code" href="classgeos_1_1algorithm_1_1RayCrossingCounter.html">RayCrossingCounter</a>& other);</div> <div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <a class="code" href="classgeos_1_1algorithm_1_1RayCrossingCounter.html">RayCrossingCounter</a>& operator=(<span class="keyword">const</span> <a class="code" href="classgeos_1_1algorithm_1_1RayCrossingCounter.html">RayCrossingCounter</a>& rhs);</div> <div class="line"><a name="l00079"></a><span class="lineno"> 79</span> </div> <div class="line"><a name="l00080"></a><span class="lineno"> 80</span> <span class="keyword">public</span>:</div> <div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keyword">static</span> <span class="keywordtype">int</span> locatePointInRing(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a>& p,</div> <div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1CoordinateSequence.html">geom::CoordinateSequence</a>& ring);</div> <div class="line"><a name="l00091"></a><span class="lineno"> 91</span> </div> <div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keyword">static</span> <span class="keywordtype">int</span> locatePointInRing(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a>& p,</div> <div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="keyword">const</span> std::vector<const geom::Coordinate*>& ring);</div> <div class="line"><a name="l00095"></a><span class="lineno"> 95</span> </div> <div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="keyword">static</span> <span class="keywordtype">int</span> orientationIndex(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a>& p1,</div> <div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a>& p2,</div> <div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a>& q);</div> <div class="line"><a name="l00111"></a><span class="lineno"> 111</span> </div> <div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <a class="code" href="classgeos_1_1algorithm_1_1RayCrossingCounter.html">RayCrossingCounter</a>(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a>& point)</div> <div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  : point( point),</div> <div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  crossingCount( 0),</div> <div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  isPointOnSegment( <span class="keyword">false</span>)</div> <div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  { }</div> <div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  </div> <div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="keywordtype">void</span> countSegment(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a>& p1,</div> <div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a>& p2);</div> <div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  </div> <div class="line"><a name="l00136"></a><span class="lineno"><a class="line" href="classgeos_1_1algorithm_1_1RayCrossingCounter.html#aa1a0b63601c69e817aa262617667a41b"> 136</a></span>  <span class="keywordtype">bool</span> <a class="code" href="classgeos_1_1algorithm_1_1RayCrossingCounter.html#aa1a0b63601c69e817aa262617667a41b">isOnSegment</a>() </div> <div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  { </div> <div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="keywordflow">return</span> isPointOnSegment; </div> <div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  }</div> <div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  </div> <div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="keywordtype">int</span> getLocation();</div> <div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  </div> <div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <span class="keywordtype">bool</span> isPointInPolygon();</div> <div class="line"><a name="l00164"></a><span class="lineno"> 164</span> </div> <div class="line"><a name="l00165"></a><span class="lineno"> 165</span> };</div> <div class="line"><a name="l00166"></a><span class="lineno"> 166</span> </div> <div class="line"><a name="l00167"></a><span class="lineno"> 167</span> } <span class="comment">// geos::algorithm</span></div> <div class="line"><a name="l00168"></a><span class="lineno"> 168</span> } <span class="comment">// geos</span></div> <div class="line"><a name="l00169"></a><span class="lineno"> 169</span> </div> <div class="line"><a name="l00170"></a><span class="lineno"> 170</span> <span class="preprocessor">#endif // GEOS_ALGORITHM_RAYCROSSINGCOUNTER_H</span></div> <div class="ttc" id="classgeos_1_1geom_1_1Coordinate_html"><div class="ttname"><a href="classgeos_1_1geom_1_1Coordinate.html">geos::geom::Coordinate</a></div><div class="ttdoc">Coordinate is the lightweight class used to store coordinates. </div><div class="ttdef"><b>Definition:</b> Coordinate.h:60</div></div> <div class="ttc" id="classgeos_1_1algorithm_1_1RayCrossingCounter_html_aa1a0b63601c69e817aa262617667a41b"><div class="ttname"><a href="classgeos_1_1algorithm_1_1RayCrossingCounter.html#aa1a0b63601c69e817aa262617667a41b">geos::algorithm::RayCrossingCounter::isOnSegment</a></div><div class="ttdeci">bool isOnSegment()</div><div class="ttdef"><b>Definition:</b> RayCrossingCounter.h:136</div></div> <div class="ttc" id="classgeos_1_1geom_1_1CoordinateSequence_html"><div class="ttname"><a href="classgeos_1_1geom_1_1CoordinateSequence.html">geos::geom::CoordinateSequence</a></div><div class="ttdoc">The internal representation of a list of coordinates inside a Geometry. </div><div class="ttdef"><b>Definition:</b> CoordinateSequence.h:59</div></div> <div class="ttc" id="classgeos_1_1algorithm_1_1RayCrossingCounter_html"><div class="ttname"><a href="classgeos_1_1algorithm_1_1RayCrossingCounter.html">geos::algorithm::RayCrossingCounter</a></div><div class="ttdoc">Counts the number of segments crossed by a horizontal ray extending to the right from a given point...</div><div class="ttdef"><b>Definition:</b> RayCrossingCounter.h:66</div></div> </div><!-- fragment --></div><!-- contents --> <!-- start footer part --> <hr class="footer"/><address class="footer"><small> Generated by  <a 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