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class="title">LineIntersector.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) 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,</div> <div class="line"><a name="l00079"></a><span class="lineno"> 79</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="l00080"></a><span class="lineno"> 80</span> </div> <div class="line"><a name="l00081"></a><span class="lineno"> 81</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 = <span class="keyword">nullptr</span>)</div> <div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  :</div> <div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  precisionModel(initialPrecisionModel),</div> <div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  result(0),</div> <div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  isProperVar(<span class="keyword">false</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> </div> <div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  ~<a class="code" href="classgeos_1_1algorithm_1_1LineIntersector.html">LineIntersector</a>() {}</div> <div class="line"><a name="l00089"></a><span class="lineno"> 89</span> </div> <div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="keywordtype">bool</span> isInteriorIntersection();</div> <div class="line"><a name="l00098"></a><span class="lineno"> 98</span> </div> <div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="keywordtype">bool</span> isInteriorIntersection(<span class="keywordtype">int</span> inputLineIndex);</div> <div class="line"><a name="l00107"></a><span class="lineno"> 107</span> </div> <div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="comment">//</span></div> <div class="line"><a name="l00114"></a><span class="lineno"> 114</span> <span class="comment"></span> <span class="keywordtype">void</span></div> <div class="line"><a name="l00115"></a><span class="lineno"><a class="line" href="classgeos_1_1algorithm_1_1LineIntersector.html#a742294f2808e7d07387771ca31a6c07f"> 115</a></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="l00116"></a><span class="lineno"> 116</span>  {</div> <div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  precisionModel = newPM;</div> <div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  }</div> <div class="line"><a name="l00119"></a><span class="lineno"> 119</span> </div> <div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  <span class="comment">//</span></div> <div class="line"><a name="l00126"></a><span class="lineno"> 126</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="l00127"></a><span class="lineno"> 127</span> </div> <div class="line"><a name="l00129"></a><span class="lineno"> 129</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="l00130"></a><span class="lineno"> 130</span> </div> <div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <span class="comment">// These are deprecated, due to ambiguous naming</span></div> <div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="keyword">enum</span> {</div> <div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  DONT_INTERSECT = 0,</div> <div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  DO_INTERSECT = 1,</div> <div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  COLLINEAR = 2</div> <div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  };</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="keyword">enum</span> {</div> <div class="line"><a name="l00140"></a><span class="lineno"><a class="line" href="classgeos_1_1algorithm_1_1LineIntersector.html#abe8a444de55358c303d74c765e24b109a41ea06e310475a259b08e43598705fed"> 140</a></span>  NO_INTERSECTION = 0,</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#abe8a444de55358c303d74c765e24b109ac27172d289eac55bb325f5eb73564b56"> 143</a></span>  POINT_INTERSECTION = 1,</div> <div class="line"><a name="l00144"></a><span class="lineno"> 144</span> </div> <div class="line"><a name="l00146"></a><span class="lineno"><a class="line" href="classgeos_1_1algorithm_1_1LineIntersector.html#abe8a444de55358c303d74c765e24b109a7feb3f604c1af5bfe7e422a084b0eade"> 146</a></span>  COLLINEAR_INTERSECTION = 2</div> <div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  };</div> <div class="line"><a name="l00148"></a><span class="lineno"> 148</span> </div> <div class="line"><a name="l00150"></a><span class="lineno"> 150</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="l00151"></a><span class="lineno"> 151</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="l00152"></a><span class="lineno"> 152</span> </div> <div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  std::string toString() <span class="keyword">const</span>;</div> <div class="line"><a name="l00154"></a><span class="lineno"> 154</span> </div> <div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  <span class="keywordtype">bool</span></div> <div class="line"><a name="l00161"></a><span class="lineno"><a class="line" href="classgeos_1_1algorithm_1_1LineIntersector.html#a6189821070c6a9081cb2bce8c3c54091"> 161</a></span>  <a class="code" href="classgeos_1_1algorithm_1_1LineIntersector.html#a6189821070c6a9081cb2bce8c3c54091">hasIntersection</a>()<span class="keyword"> const</span></div> <div class="line"><a name="l00162"></a><span class="lineno"> 162</span> <span class="keyword"> </span>{</div> <div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <span class="keywordflow">return</span> result != NO_INTERSECTION;</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="l00170"></a><span class="lineno"> 170</span> <span class="comment"></span> <span class="keywordtype">size_t</span></div> <div class="line"><a name="l00171"></a><span class="lineno"><a class="line" href="classgeos_1_1algorithm_1_1LineIntersector.html#afda5b273b82754400b154d1100866a2e"> 171</a></span>  <a class="code" href="classgeos_1_1algorithm_1_1LineIntersector.html#afda5b273b82754400b154d1100866a2e">getIntersectionNum</a>()<span class="keyword"> const</span></div> <div class="line"><a name="l00172"></a><span class="lineno"> 172</span> <span class="keyword"> </span>{</div> <div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  <span class="keywordflow">return</span> result;</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="l00176"></a><span class="lineno"> 176</span> </div> <div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  <span class="comment">//</span></div> <div class="line"><a name="l00183"></a><span class="lineno"> 183</span> <span class="comment"></span> <span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a>&</div> <div class="line"><a name="l00184"></a><span class="lineno"><a class="line" href="classgeos_1_1algorithm_1_1LineIntersector.html#aa79d750d46c1bd0dd0d6091bed301c4e"> 184</a></span>  <a class="code" href="classgeos_1_1algorithm_1_1LineIntersector.html#aa79d750d46c1bd0dd0d6091bed301c4e">getIntersection</a>(<span class="keywordtype">size_t</span> intIndex)<span class="keyword"> const</span></div> <div class="line"><a name="l00185"></a><span class="lineno"> 185</span> <span class="keyword"> </span>{</div> <div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  <span class="keywordflow">return</span> intPt[intIndex];</div> <div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  }</div> <div class="line"><a name="l00188"></a><span class="lineno"> 188</span> </div> <div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  <span class="comment">//</span></div> <div class="line"><a name="l00193"></a><span class="lineno"> 193</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="l00194"></a><span class="lineno"> 194</span> </div> <div class="line"><a name="l00205"></a><span class="lineno"> 205</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="l00206"></a><span class="lineno"> 206</span> </div> <div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  <span class="keywordtype">bool</span></div> <div class="line"><a name="l00222"></a><span class="lineno"><a class="line" href="classgeos_1_1algorithm_1_1LineIntersector.html#a19d15a24c61e942bd83be9ae43cda5fc"> 222</a></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="l00223"></a><span class="lineno"> 223</span> <span class="keyword"> </span>{</div> <div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  <span class="keywordflow">return</span> hasIntersection() && isProperVar;</div> <div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  }</div> <div class="line"><a name="l00226"></a><span class="lineno"> 226</span> </div> <div class="line"><a name="l00237"></a><span class="lineno"> 237</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="l00238"></a><span class="lineno"> 238</span> </div> <div class="line"><a name="l00248"></a><span class="lineno"> 248</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="l00249"></a><span class="lineno"> 249</span> </div> <div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  <span class="keywordtype">double</span> getEdgeDistance(<span class="keywordtype">size_t</span> geomIndex, <span class="keywordtype">size_t</span> intIndex) <span class="keyword">const</span>;</div> <div class="line"><a name="l00260"></a><span class="lineno"> 260</span> </div> <div class="line"><a name="l00261"></a><span class="lineno"> 261</span> <span class="keyword">private</span>:</div> <div class="line"><a name="l00262"></a><span class="lineno"> 262</span> </div> <div class="line"><a name="l00267"></a><span class="lineno"> 267</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="l00268"></a><span class="lineno"> 268</span> </div> <div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  <span class="keywordtype">size_t</span> result;</div> <div class="line"><a name="l00270"></a><span class="lineno"> 270</span> </div> <div class="line"><a name="l00271"></a><span class="lineno"> 271</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="l00272"></a><span class="lineno"> 272</span> </div> <div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  <a class="code" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a> intPt[2];</div> <div class="line"><a name="l00278"></a><span class="lineno"> 278</span> </div> <div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  <span class="keywordtype">int</span> intLineIndex[2][2];</div> <div class="line"><a name="l00284"></a><span class="lineno"> 284</span> </div> <div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  <span class="keywordtype">bool</span> isProperVar;</div> <div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  <span class="comment">//Coordinate &pa;</span></div> <div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  <span class="comment">//Coordinate &pb;</span></div> <div class="line"><a name="l00288"></a><span class="lineno"> 288</span> </div> <div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  <span class="keywordtype">bool</span></div> <div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  isCollinear()<span class="keyword"> const</span></div> <div class="line"><a name="l00291"></a><span class="lineno"> 291</span> <span class="keyword"> </span>{</div> <div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  <span class="keywordflow">return</span> result == COLLINEAR_INTERSECTION;</div> <div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  }</div> <div class="line"><a name="l00294"></a><span class="lineno"> 294</span> </div> <div class="line"><a name="l00295"></a><span class="lineno"> 295</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,</div> <div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  <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="l00297"></a><span class="lineno"> 297</span> </div> <div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  <span class="keywordtype">bool</span></div> <div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  isEndPoint()<span class="keyword"> const</span></div> <div class="line"><a name="l00300"></a><span class="lineno"> 300</span> <span class="keyword"> </span>{</div> <div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  <span class="keywordflow">return</span> hasIntersection() && !isProperVar;</div> <div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  }</div> <div class="line"><a name="l00303"></a><span class="lineno"> 303</span> </div> <div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  <span class="keywordtype">void</span> computeIntLineIndex();</div> <div class="line"><a name="l00305"></a><span class="lineno"> 305</span> </div> <div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  <span class="keywordtype">void</span> computeIntLineIndex(<span class="keywordtype">int</span> segmentIndex);</div> <div class="line"><a name="l00307"></a><span class="lineno"> 307</span> </div> <div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  <span class="keywordtype">int</span> computeCollinearIntersection(<span class="keyword">const</span> geom::Coordinate& p1, <span class="keyword">const</span> geom::Coordinate& p2,</div> <div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  <span class="keyword">const</span> geom::Coordinate& q1, <span class="keyword">const</span> geom::Coordinate& q2);</div> <div class="line"><a name="l00310"></a><span class="lineno"> 310</span> </div> <div class="line"><a name="l00320"></a><span class="lineno"> 320</span>  geom::Coordinate intersection(<span class="keyword">const</span> geom::Coordinate& p1,</div> <div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  <span class="keyword">const</span> geom::Coordinate& p2,</div> <div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  <span class="keyword">const</span> geom::Coordinate& q1,</div> <div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  <span class="keyword">const</span> geom::Coordinate& q2) <span class="keyword">const</span>;</div> <div class="line"><a name="l00324"></a><span class="lineno"> 324</span> </div> <div class="line"><a name="l00335"></a><span class="lineno"> 335</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="l00336"></a><span class="lineno"> 336</span> </div> <div class="line"><a name="l00337"></a><span class="lineno"> 337</span> </div> <div class="line"><a name="l00350"></a><span class="lineno"> 350</span>  geom::Coordinate intersectionSafe(<span class="keyword">const</span> geom::Coordinate& p1, <span class="keyword">const</span> geom::Coordinate& p2,</div> <div class="line"><a name="l00351"></a><span class="lineno"> 351</span>  <span class="keyword">const</span> geom::Coordinate& q1, <span class="keyword">const</span> geom::Coordinate& q2) <span class="keyword">const</span>;</div> <div class="line"><a name="l00352"></a><span class="lineno"> 352</span> </div> <div class="line"><a name="l00353"></a><span class="lineno"> 353</span> };</div> <div class="line"><a name="l00354"></a><span class="lineno"> 354</span> </div> <div class="line"><a name="l00355"></a><span class="lineno"> 355</span> } <span class="comment">// namespace geos::algorithm</span></div> <div class="line"><a name="l00356"></a><span class="lineno"> 356</span> } <span class="comment">// namespace geos</span></div> <div class="line"><a name="l00357"></a><span class="lineno"> 357</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> <span class="preprocessor">#endif // GEOS_ALGORITHM_LINEINTERSECTOR_H</span></div> <div class="line"><a name="l00360"></a><span class="lineno"> 360</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_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_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:222</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_aa79d750d46c1bd0dd0d6091bed301c4e"><div class="ttname"><a href="classgeos_1_1algorithm_1_1LineIntersector.html#aa79d750d46c1bd0dd0d6091bed301c4e">geos::algorithm::LineIntersector::getIntersection</a></div><div class="ttdeci">const geom::Coordinate & getIntersection(size_t intIndex) const </div><div class="ttdoc">Returns the intIndex&#39;th intersection point. </div><div class="ttdef"><b>Definition:</b> LineIntersector.h:184</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:115</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:161</div></div> <div class="ttc" id="classgeos_1_1algorithm_1_1LineIntersector_html_afda5b273b82754400b154d1100866a2e"><div class="ttname"><a href="classgeos_1_1algorithm_1_1LineIntersector.html#afda5b273b82754400b154d1100866a2e">geos::algorithm::LineIntersector::getIntersectionNum</a></div><div class="ttdeci">size_t getIntersectionNum() const </div><div class="ttdoc">Returns the number of intersection points found. </div><div class="ttdef"><b>Definition:</b> LineIntersector.h:171</div></div> </div><!-- fragment --></div><!-- contents --> <!-- start footer part --> <hr class="footer"/><address class="footer"><small> Generated 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