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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: EdgeIntersection.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) 2009-2011 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: geomgraph/EdgeIntersection.java rev. 1.5 (JTS-1.10)</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> </div> <div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#ifndef GEOS_GEOMGRAPH_EDGEINTERSECTION_H</span></div> <div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor"></span><span class="preprocessor">#define GEOS_GEOMGRAPH_EDGEINTERSECTION_H</span></div> <div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor"></span></div> <div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include <geos/export.h></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="preprocessor">#include <geos/geom/Coordinate.h></span> <span class="comment">// for composition and inlines</span></div> <div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div> <div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#include <geos/inline.h></span></div> <div class="line"><a name="l00030"></a><span class="lineno"> 30</span> </div> <div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#include <ostream></span></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> <span class="keyword">namespace </span>geos {</div> <div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="keyword">namespace </span>geomgraph { <span class="comment">// geos.geomgraph</span></div> <div class="line"><a name="l00036"></a><span class="lineno"> 36</span> </div> <div class="line"><a name="l00045"></a><span class="lineno"><a class="line" href="classgeos_1_1geomgraph_1_1EdgeIntersection.html"> 45</a></span> <span class="keyword">class </span>GEOS_DLL <a class="code" href="classgeos_1_1geomgraph_1_1EdgeIntersection.html">EdgeIntersection</a> {</div> <div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="keyword">public</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="comment">// the point of intersection</span></div> <div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <a class="code" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a> coord;</div> <div class="line"><a name="l00050"></a><span class="lineno"> 50</span> </div> <div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="comment">// the edge distance of this point along the containing line segment</span></div> <div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keywordtype">double</span> dist;</div> <div class="line"><a name="l00053"></a><span class="lineno"> 53</span> </div> <div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="comment">// the index of the containing line segment in the parent edge</span></div> <div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keywordtype">int</span> segmentIndex;</div> <div class="line"><a name="l00056"></a><span class="lineno"> 56</span> </div> <div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <a class="code" href="classgeos_1_1geomgraph_1_1EdgeIntersection.html">EdgeIntersection</a>(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a>& newCoord,</div> <div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="keywordtype">int</span> newSegmentIndex, <span class="keywordtype">double</span> newDist)</div> <div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  :</div> <div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  coord(newCoord),</div> <div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  dist(newDist),</div> <div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  segmentIndex(newSegmentIndex)</div> <div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  {}</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>  <span class="keywordtype">bool</span> isEndPoint(<span class="keywordtype">int</span> maxSegmentIndex)<span class="keyword"> const </span>{</div> <div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keywordflow">if</span> (segmentIndex==0 && dist==0.0) <span class="keywordflow">return</span> <span class="keyword">true</span>;</div> <div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keywordflow">if</span> (segmentIndex==maxSegmentIndex) <span class="keywordflow">return</span> <span class="keyword">true</span>;</div> <div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div> <div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  }</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="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a>& getCoordinate()<span class="keyword"> const </span>{</div> <div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keywordflow">return</span> coord;</div> <div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  }</div> <div class="line"><a name="l00074"></a><span class="lineno"> 74</span> </div> <div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keywordtype">int</span> getSegmentIndex()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> segmentIndex; }</div> <div class="line"><a name="l00076"></a><span class="lineno"> 76</span> </div> <div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="keywordtype">double</span> getDistance()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> dist; }</div> <div class="line"><a name="l00078"></a><span class="lineno"> 78</span> </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> </div> <div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <span class="comment">//</span></div> <div class="line"><a name="l00084"></a><span class="lineno"><a class="line" href="namespacegeos_1_1geomgraph.html#a4e0bda6ab47ae25ad785cfd4c6e7d07b"> 84</a></span> <span class="comment"></span><span class="keyword">inline</span> <span class="keywordtype">bool</span> <a class="code" href="namespacegeos_1_1geomgraph.html#a4e0bda6ab47ae25ad785cfd4c6e7d07b">operator< </a>(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geomgraph_1_1EdgeIntersection.html">EdgeIntersection</a>& ei1, <span class="keyword">const</span> <a class="code" href="classgeos_1_1geomgraph_1_1EdgeIntersection.html">EdgeIntersection</a>& ei2)</div> <div class="line"><a name="l00085"></a><span class="lineno"> 85</span> {</div> <div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keywordflow">if</span> ( ei1.segmentIndex < ei2.segmentIndex ) <span class="keywordflow">return</span> <span class="keyword">true</span>;</div> <div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="keywordflow">if</span> ( ei1.segmentIndex == ei2.segmentIndex )</div> <div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  {</div> <div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keywordflow">if</span> ( ei1.dist < ei2.dist ) <span class="keywordflow">return</span> <span class="keyword">true</span>;</div> <div class="line"><a name="l00090"></a><span class="lineno"> 90</span> </div> <div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="comment">// TODO: check if the Coordinate matches, or this will</span></div> <div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="comment">// be a robustness issue in computin distance</span></div> <div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="comment">// See http://trac.osgeo.org/geos/ticket/350</span></div> <div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  }</div> <div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div> <div class="line"><a name="l00096"></a><span class="lineno"> 96</span> }</div> <div class="line"><a name="l00097"></a><span class="lineno"> 97</span> </div> <div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <span class="comment">// @deprecated, use strict weak ordering operator</span></div> <div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="keyword">struct </span>GEOS_DLL EdgeIntersectionLessThen {</div> <div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="keywordtype">bool</span> operator()(<span class="keyword">const</span> EdgeIntersection *ei1,</div> <div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="keyword">const</span> EdgeIntersection *ei2)<span class="keyword"> const</span></div> <div class="line"><a name="l00102"></a><span class="lineno"> 102</span> <span class="keyword"> </span>{</div> <div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="keywordflow">return</span> *ei1 < *ei2;</div> <div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  }</div> <div class="line"><a name="l00105"></a><span class="lineno"> 105</span> };</div> <div class="line"><a name="l00106"></a><span class="lineno"> 106</span> </div> <div class="line"><a name="l00108"></a><span class="lineno"><a class="line" href="namespacegeos_1_1geomgraph.html#a141ab336c06070abadab5b866e496765"> 108</a></span> <span class="keyword">inline</span> std::ostream& operator<< (std::ostream& os, <span class="keyword">const</span> <a class="code" href="classgeos_1_1geomgraph_1_1EdgeIntersection.html">EdgeIntersection</a>& e)</div> <div class="line"><a name="l00109"></a><span class="lineno"> 109</span> {</div> <div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  os << e.coord << <span class="stringliteral">" seg # = "</span> << e.segmentIndex << <span class="stringliteral">" dist = "</span> << e.dist;</div> <div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keywordflow">return</span> os;</div> <div class="line"><a name="l00112"></a><span class="lineno"> 112</span> }</div> <div class="line"><a name="l00113"></a><span class="lineno"> 113</span> </div> <div class="line"><a name="l00114"></a><span class="lineno"> 114</span> } <span class="comment">// namespace geos.geomgraph</span></div> <div class="line"><a name="l00115"></a><span class="lineno"> 115</span> } <span class="comment">// namespace geos</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> <span class="preprocessor">#endif // ifndef GEOS_GEOMGRAPH_EDGEINTERSECTION_H</span></div> <div class="line"><a name="l00118"></a><span class="lineno"> 118</span> <span class="preprocessor"></span></div> <div class="line"><a name="l00119"></a><span class="lineno"> 119</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_1geomgraph_1_1EdgeIntersection_html"><div class="ttname"><a href="classgeos_1_1geomgraph_1_1EdgeIntersection.html">geos::geomgraph::EdgeIntersection</a></div><div class="ttdef"><b>Definition:</b> EdgeIntersection.h:45</div></div> <div class="ttc" id="namespacegeos_1_1geomgraph_html_a4e0bda6ab47ae25ad785cfd4c6e7d07b"><div class="ttname"><a href="namespacegeos_1_1geomgraph.html#a4e0bda6ab47ae25ad785cfd4c6e7d07b">geos::geomgraph::operator<</a></div><div class="ttdeci">bool operator<(const EdgeIntersection &ei1, const EdgeIntersection &ei2)</div><div class="ttdoc">Strict weak ordering operator for EdgeIntersection. </div><div class="ttdef"><b>Definition:</b> EdgeIntersection.h:84</div></div> </div><!-- fragment --></div><!-- contents --> <!-- start footer part --> <hr class="footer"/><address class="footer"><small> Generated by  <a href="http://www.doxygen.org/index.html"> <img class="footer" src="doxygen.png" alt="doxygen"/> </a> 1.8.5 </small></address> </body> </html>