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Edit File: LineIntersector_8h_source.html
<!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: LineIntersector.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 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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) 2005-2006 Refractions Research Inc.</span></div> <div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * Copyright (C) 2001-2002 Vivid Solutions Inc.</span></div> <div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> *</span></div> <div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * This is free software; you can redistribute and/or modify it under</span></div> <div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> * the terms of the GNU Lesser General Public Licence as published</span></div> <div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * by the Free Software Foundation. </span></div> <div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * See the COPYING file for more information.</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/RobustLineIntersector.java r785 (JTS-1.13+)</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_LINEINTERSECTOR_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_LINEINTERSECTOR_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> <span class="preprocessor">#include <string></span></div> <div class="line"><a name="l00025"></a><span class="lineno"> 25</span> </div> <div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#include <geos/geom/Coordinate.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="comment">// Forward declarations</span></div> <div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="keyword">namespace </span>geos {</div> <div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  <span class="keyword">namespace </span>geom {</div> <div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  <span class="keyword">class </span>PrecisionModel;</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> <span class="keyword">namespace </span>geos {</div> <div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="keyword">namespace </span>algorithm { <span class="comment">// geos::algorithm</span></div> <div class="line"><a name="l00037"></a><span class="lineno"> 37</span> </div> <div class="line"><a name="l00049"></a><span class="lineno"><a class="line" href="classgeos_1_1algorithm_1_1LineIntersector.html"> 49</a></span> <span class="keyword">class </span>GEOS_DLL <a class="code" href="classgeos_1_1algorithm_1_1LineIntersector.html">LineIntersector</a> {</div> <div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="keyword">public</span>: </div> <div class="line"><a name="l00051"></a><span class="lineno"> 51</span> </div> <div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keyword">static</span> <span class="keywordtype">double</span> interpolateZ(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a> &p, <span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a> &p0, <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="l00056"></a><span class="lineno"> 56</span> </div> <div class="line"><a name="l00057"></a><span class="lineno"> 57</span> </div> <div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="comment">//</span></div> <div class="line"><a name="l00076"></a><span class="lineno"> 76</span> <span class="comment"></span> <span class="keyword">static</span> <span class="keywordtype">double</span> computeEdgeDistance(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a>& p, <span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a>& p0, <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="l00077"></a><span class="lineno"> 77</span> </div> <div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="keyword">static</span> <span class="keywordtype">double</span> nonRobustComputeEdgeDistance(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a>& p,<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a>& p1,<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="l00079"></a><span class="lineno"> 79</span> </div> <div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <a class="code" href="classgeos_1_1algorithm_1_1LineIntersector.html">LineIntersector</a>(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1PrecisionModel.html">geom::PrecisionModel</a>* initialPrecisionModel=NULL)</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>  precisionModel(initialPrecisionModel),</div> <div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  result(0),</div> <div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  isProperVar(<span class="keyword">false</span>)</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> </div> <div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  ~<a class="code" href="classgeos_1_1algorithm_1_1LineIntersector.html">LineIntersector</a>() {}</div> <div class="line"><a name="l00088"></a><span class="lineno"> 88</span> </div> <div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <span class="keywordtype">bool</span> isInteriorIntersection();</div> <div class="line"><a name="l00097"></a><span class="lineno"> 97</span> </div> <div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="keywordtype">bool</span> isInteriorIntersection(<span class="keywordtype">int</span> inputLineIndex);</div> <div class="line"><a name="l00106"></a><span class="lineno"> 106</span> </div> <div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="comment">//</span></div> <div class="line"><a name="l00113"></a><span class="lineno"><a class="line" href="classgeos_1_1algorithm_1_1LineIntersector.html#a742294f2808e7d07387771ca31a6c07f"> 113</a></span> <span class="comment"></span> <span class="keywordtype">void</span> <a class="code" href="classgeos_1_1algorithm_1_1LineIntersector.html#a742294f2808e7d07387771ca31a6c07f">setPrecisionModel</a>(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1PrecisionModel.html">geom::PrecisionModel</a> *newPM) {</div> <div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  precisionModel=newPM;</div> <div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  }</div> <div class="line"><a name="l00116"></a><span class="lineno"> 116</span> </div> <div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="comment">//</span></div> <div class="line"><a name="l00123"></a><span class="lineno"> 123</span> <span class="comment"></span> <span class="keywordtype">void</span> computeIntersection(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a>& p, <span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a>& p1, <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="l00124"></a><span class="lineno"> 124</span> </div> <div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keyword">static</span> <span class="keywordtype">bool</span> hasIntersection(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a>& p,<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a>& p1,<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="l00127"></a><span class="lineno"> 127</span> </div> <div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="comment">// These are deprecated, due to ambiguous naming</span></div> <div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  <span class="keyword">enum</span> {</div> <div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  DONT_INTERSECT=0,</div> <div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  DO_INTERSECT=1,</div> <div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  COLLINEAR=2</div> <div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  };</div> <div class="line"><a name="l00134"></a><span class="lineno"> 134</span> </div> <div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="keyword">enum</span> {</div> <div class="line"><a name="l00137"></a><span class="lineno"><a class="line" href="classgeos_1_1algorithm_1_1LineIntersector.html#abe8a444de55358c303d74c765e24b109a41ea06e310475a259b08e43598705fed"> 137</a></span>  NO_INTERSECTION=0,</div> <div class="line"><a name="l00138"></a><span class="lineno"> 138</span> </div> <div class="line"><a name="l00140"></a><span class="lineno"><a class="line" href="classgeos_1_1algorithm_1_1LineIntersector.html#abe8a444de55358c303d74c765e24b109ac27172d289eac55bb325f5eb73564b56"> 140</a></span>  POINT_INTERSECTION=1,</div> <div class="line"><a name="l00141"></a><span class="lineno"> 141</span> </div> <div class="line"><a name="l00143"></a><span class="lineno"><a class="line" href="classgeos_1_1algorithm_1_1LineIntersector.html#abe8a444de55358c303d74c765e24b109a7feb3f604c1af5bfe7e422a084b0eade"> 143</a></span>  COLLINEAR_INTERSECTION=2</div> <div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  };</div> <div class="line"><a name="l00145"></a><span class="lineno"> 145</span> </div> <div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <span class="keywordtype">void</span> computeIntersection(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a>& p1, <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="l00148"></a><span class="lineno"> 148</span>  <span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a>& p3, <span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a>& p4);</div> <div class="line"><a name="l00149"></a><span class="lineno"> 149</span> </div> <div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  std::string toString() <span class="keyword">const</span>;</div> <div class="line"><a name="l00151"></a><span class="lineno"> 151</span> </div> <div class="line"><a name="l00157"></a><span class="lineno"><a class="line" href="classgeos_1_1algorithm_1_1LineIntersector.html#a6189821070c6a9081cb2bce8c3c54091"> 157</a></span>  <span class="keywordtype">bool</span> <a class="code" href="classgeos_1_1algorithm_1_1LineIntersector.html#a6189821070c6a9081cb2bce8c3c54091">hasIntersection</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> result!=NO_INTERSECTION; }</div> <div class="line"><a name="l00158"></a><span class="lineno"> 158</span> </div> <div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  <span class="comment">//</span></div> <div class="line"><a name="l00163"></a><span class="lineno"><a class="line" href="classgeos_1_1algorithm_1_1LineIntersector.html#a7e383aa9d5f900c1d107ce78c4de9d79"> 163</a></span> <span class="comment"></span> <span class="keywordtype">int</span> <a class="code" href="classgeos_1_1algorithm_1_1LineIntersector.html#a7e383aa9d5f900c1d107ce78c4de9d79">getIntersectionNum</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> result; }</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="l00167"></a><span class="lineno"> 167</span>  <span class="comment">//</span></div> <div class="line"><a name="l00172"></a><span class="lineno"><a class="line" href="classgeos_1_1algorithm_1_1LineIntersector.html#a938b9f5eb11695238aa68754e6b3b25a"> 172</a></span> <span class="comment"></span> <span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a>& <a class="code" href="classgeos_1_1algorithm_1_1LineIntersector.html#a938b9f5eb11695238aa68754e6b3b25a">getIntersection</a>(<span class="keywordtype">int</span> intIndex)<span class="keyword"> const </span>{</div> <div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  <span class="keywordflow">return</span> intPt[intIndex];</div> <div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  }</div> <div class="line"><a name="l00175"></a><span class="lineno"> 175</span> </div> <div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  <span class="comment">//</span></div> <div class="line"><a name="l00180"></a><span class="lineno"> 180</span> <span class="comment"></span> <span class="keyword">static</span> <span class="keywordtype">bool</span> isSameSignAndNonZero(<span class="keywordtype">double</span> a,<span class="keywordtype">double</span> b);</div> <div class="line"><a name="l00181"></a><span class="lineno"> 181</span> </div> <div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  <span class="keywordtype">bool</span> isIntersection(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a>& pt) <span class="keyword">const</span>;</div> <div class="line"><a name="l00193"></a><span class="lineno"> 193</span> </div> <div class="line"><a name="l00208"></a><span class="lineno"><a class="line" href="classgeos_1_1algorithm_1_1LineIntersector.html#a19d15a24c61e942bd83be9ae43cda5fc"> 208</a></span>  <span class="keywordtype">bool</span> <a class="code" href="classgeos_1_1algorithm_1_1LineIntersector.html#a19d15a24c61e942bd83be9ae43cda5fc">isProper</a>()<span class="keyword"> const </span>{</div> <div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  <span class="keywordflow">return</span> hasIntersection()&&isProperVar;</div> <div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  }</div> <div class="line"><a name="l00211"></a><span class="lineno"> 211</span> </div> <div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  <span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a>& getIntersectionAlongSegment(<span class="keywordtype">int</span> segmentIndex,<span class="keywordtype">int</span> intIndex);</div> <div class="line"><a name="l00223"></a><span class="lineno"> 223</span> </div> <div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  <span class="keywordtype">int</span> getIndexAlongSegment(<span class="keywordtype">int</span> segmentIndex,<span class="keywordtype">int</span> intIndex);</div> <div class="line"><a name="l00234"></a><span class="lineno"> 234</span> </div> <div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  <span class="keywordtype">double</span> getEdgeDistance(<span class="keywordtype">int</span> geomIndex,<span class="keywordtype">int</span> intIndex) <span class="keyword">const</span>;</div> <div class="line"><a name="l00245"></a><span class="lineno"> 245</span> </div> <div class="line"><a name="l00246"></a><span class="lineno"> 246</span> <span class="keyword">private</span>:</div> <div class="line"><a name="l00247"></a><span class="lineno"> 247</span> </div> <div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  <span class="keywordtype">void</span> intersectionWithNormalization(<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="l00249"></a><span class="lineno"> 249</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="l00250"></a><span class="lineno"> 250</span>  <span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a>& q1,</div> <div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  <span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a>& q2,</div> <div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  <a class="code" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a> &ret) <span class="keyword">const</span>;</div> <div class="line"><a name="l00253"></a><span class="lineno"> 253</span> </div> <div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  <span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1PrecisionModel.html">geom::PrecisionModel</a> *precisionModel;</div> <div class="line"><a name="l00259"></a><span class="lineno"> 259</span> </div> <div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  <span class="keywordtype">int</span> result;</div> <div class="line"><a name="l00261"></a><span class="lineno"> 261</span> </div> <div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  <span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a> *inputLines[2][2];</div> <div class="line"><a name="l00263"></a><span class="lineno"> 263</span> </div> <div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  <a class="code" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a> intPt[2];</div> <div class="line"><a name="l00269"></a><span class="lineno"> 269</span> </div> <div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  <span class="keywordtype">int</span> intLineIndex[2][2];</div> <div class="line"><a name="l00275"></a><span class="lineno"> 275</span> </div> <div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  <span class="keywordtype">bool</span> isProperVar;</div> <div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  <span class="comment">//Coordinate &pa;</span></div> <div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  <span class="comment">//Coordinate &pb;</span></div> <div class="line"><a name="l00279"></a><span class="lineno"> 279</span> </div> <div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  <span class="keywordtype">bool</span> isCollinear()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> result==COLLINEAR_INTERSECTION; }</div> <div class="line"><a name="l00281"></a><span class="lineno"> 281</span> </div> <div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  <span class="keywordtype">int</span> computeIntersect(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a>& p1,<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a>& p2,<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a>& q1,<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a>& q2);</div> <div class="line"><a name="l00283"></a><span class="lineno"> 283</span> </div> <div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  <span class="keywordtype">bool</span> isEndPoint()<span class="keyword"> const </span>{</div> <div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  <span class="keywordflow">return</span> hasIntersection()&&!isProperVar;</div> <div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  }</div> <div class="line"><a name="l00287"></a><span class="lineno"> 287</span> </div> <div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  <span class="keywordtype">void</span> computeIntLineIndex();</div> <div class="line"><a name="l00289"></a><span class="lineno"> 289</span> </div> <div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  <span class="keywordtype">void</span> computeIntLineIndex(<span class="keywordtype">int</span> segmentIndex);</div> <div class="line"><a name="l00291"></a><span class="lineno"> 291</span> </div> <div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  <span class="keywordtype">int</span> computeCollinearIntersection(<span class="keyword">const</span> geom::Coordinate& p1,</div> <div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  <span class="keyword">const</span> geom::Coordinate& p2, <span class="keyword">const</span> geom::Coordinate& q1,</div> <div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  <span class="keyword">const</span> geom::Coordinate& q2);</div> <div class="line"><a name="l00295"></a><span class="lineno"> 295</span> </div> <div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  <span class="keywordtype">void</span> intersection(<span class="keyword">const</span> geom::Coordinate& p1,</div> <div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  <span class="keyword">const</span> geom::Coordinate& p2,</div> <div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  <span class="keyword">const</span> geom::Coordinate& q1,</div> <div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  <span class="keyword">const</span> geom::Coordinate& q2,</div> <div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  geom::Coordinate &ret) <span class="keyword">const</span>;</div> <div class="line"><a name="l00310"></a><span class="lineno"> 310</span> </div> <div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  <span class="keywordtype">double</span> smallestInAbsValue(<span class="keywordtype">double</span> x1, <span class="keywordtype">double</span> x2,</div> <div class="line"><a name="l00312"></a><span class="lineno"> 312</span>  <span class="keywordtype">double</span> x3, <span class="keywordtype">double</span> x4) <span class="keyword">const</span>;</div> <div class="line"><a name="l00313"></a><span class="lineno"> 313</span> </div> <div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  <span class="keywordtype">bool</span> isInSegmentEnvelopes(<span class="keyword">const</span> geom::Coordinate& intPt) <span class="keyword">const</span>;</div> <div class="line"><a name="l00325"></a><span class="lineno"> 325</span> </div> <div class="line"><a name="l00337"></a><span class="lineno"> 337</span>  <span class="keywordtype">void</span> normalizeToEnvCentre(geom::Coordinate &n00, geom::Coordinate &n01,</div> <div class="line"><a name="l00338"></a><span class="lineno"> 338</span>  geom::Coordinate &n10, geom::Coordinate &n11,</div> <div class="line"><a name="l00339"></a><span class="lineno"> 339</span>  geom::Coordinate &normPt) <span class="keyword">const</span>;</div> <div class="line"><a name="l00340"></a><span class="lineno"> 340</span> </div> <div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  <span class="keywordtype">void</span> safeHCoordinateIntersection(<span class="keyword">const</span> geom::Coordinate& p1,</div> <div class="line"><a name="l00354"></a><span class="lineno"> 354</span>  <span class="keyword">const</span> geom::Coordinate& p2,</div> <div class="line"><a name="l00355"></a><span class="lineno"> 355</span>  <span class="keyword">const</span> geom::Coordinate& q1,</div> <div class="line"><a name="l00356"></a><span class="lineno"> 356</span>  <span class="keyword">const</span> geom::Coordinate& q2,</div> <div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  geom::Coordinate& intPt) <span class="keyword">const</span>;</div> <div class="line"><a name="l00358"></a><span class="lineno"> 358</span>  </div> <div class="line"><a name="l00359"></a><span class="lineno"> 359</span> };</div> <div class="line"><a name="l00360"></a><span class="lineno"> 360</span> </div> <div class="line"><a name="l00361"></a><span class="lineno"> 361</span> } <span class="comment">// namespace geos::algorithm</span></div> <div class="line"><a name="l00362"></a><span class="lineno"> 362</span> } <span class="comment">// namespace geos</span></div> <div class="line"><a name="l00363"></a><span class="lineno"> 363</span> </div> <div class="line"><a name="l00364"></a><span class="lineno"> 364</span> </div> <div class="line"><a name="l00365"></a><span class="lineno"> 365</span> <span class="preprocessor">#endif // GEOS_ALGORITHM_LINEINTERSECTOR_H</span></div> <div class="line"><a name="l00366"></a><span class="lineno"> 366</span> <span class="preprocessor"></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_1LineIntersector_html_a7e383aa9d5f900c1d107ce78c4de9d79"><div class="ttname"><a href="classgeos_1_1algorithm_1_1LineIntersector.html#a7e383aa9d5f900c1d107ce78c4de9d79">geos::algorithm::LineIntersector::getIntersectionNum</a></div><div class="ttdeci">int getIntersectionNum() const </div><div class="ttdoc">Returns the number of intersection points found. </div><div class="ttdef"><b>Definition:</b> LineIntersector.h:163</div></div> <div class="ttc" id="classgeos_1_1geom_1_1PrecisionModel_html"><div class="ttname"><a href="classgeos_1_1geom_1_1PrecisionModel.html">geos::geom::PrecisionModel</a></div><div class="ttdoc">Specifies the precision model of the Coordinate in a Geometry. </div><div class="ttdef"><b>Definition:</b> PrecisionModel.h:87</div></div> <div class="ttc" id="classgeos_1_1algorithm_1_1LineIntersector_html_a938b9f5eb11695238aa68754e6b3b25a"><div class="ttname"><a href="classgeos_1_1algorithm_1_1LineIntersector.html#a938b9f5eb11695238aa68754e6b3b25a">geos::algorithm::LineIntersector::getIntersection</a></div><div class="ttdeci">const geom::Coordinate & getIntersection(int intIndex) const </div><div class="ttdoc">Returns the intIndex&#39;th intersection point. </div><div class="ttdef"><b>Definition:</b> LineIntersector.h:172</div></div> <div class="ttc" id="classgeos_1_1algorithm_1_1LineIntersector_html_a19d15a24c61e942bd83be9ae43cda5fc"><div class="ttname"><a href="classgeos_1_1algorithm_1_1LineIntersector.html#a19d15a24c61e942bd83be9ae43cda5fc">geos::algorithm::LineIntersector::isProper</a></div><div class="ttdeci">bool isProper() const </div><div class="ttdoc">Tests whether an intersection is proper. </div><div class="ttdef"><b>Definition:</b> LineIntersector.h:208</div></div> <div class="ttc" id="classgeos_1_1algorithm_1_1LineIntersector_html"><div class="ttname"><a href="classgeos_1_1algorithm_1_1LineIntersector.html">geos::algorithm::LineIntersector</a></div><div class="ttdoc">A LineIntersector is an algorithm that can both test whether two line segments intersect and compute ...</div><div class="ttdef"><b>Definition:</b> LineIntersector.h:49</div></div> <div class="ttc" id="classgeos_1_1algorithm_1_1LineIntersector_html_a742294f2808e7d07387771ca31a6c07f"><div class="ttname"><a href="classgeos_1_1algorithm_1_1LineIntersector.html#a742294f2808e7d07387771ca31a6c07f">geos::algorithm::LineIntersector::setPrecisionModel</a></div><div class="ttdeci">void setPrecisionModel(const geom::PrecisionModel *newPM)</div><div class="ttdoc">Force computed intersection to be rounded to a given precision model. </div><div class="ttdef"><b>Definition:</b> LineIntersector.h:113</div></div> <div class="ttc" id="classgeos_1_1algorithm_1_1LineIntersector_html_a6189821070c6a9081cb2bce8c3c54091"><div class="ttname"><a href="classgeos_1_1algorithm_1_1LineIntersector.html#a6189821070c6a9081cb2bce8c3c54091">geos::algorithm::LineIntersector::hasIntersection</a></div><div class="ttdeci">bool hasIntersection() const </div><div class="ttdef"><b>Definition:</b> LineIntersector.h:157</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>