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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: LineStringSnapper.h Source File</title> <link href="tabs.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="jquery.js"></script> <script type="text/javascript" src="dynsections.js"></script> <link href="doxygen.css" rel="stylesheet" type="text/css" /> </head> <body> <div id="top"><!-- do not remove this div, it is closed by doxygen! --> <div id="titlearea"> <table cellspacing="0" cellpadding="0"> <tbody> <tr style="height: 56px;"> <td style="padding-left: 0.5em;"> <div id="projectname">GEOS  <span id="projectnumber">3.5.0</span> </div> </td> </tr> </tbody> </table> </div> <!-- end header part --> <!-- Generated by Doxygen 1.8.5 --> <div id="navrow1" class="tabs"> <ul class="tablist"> <li><a href="index.html"><span>Main Page</span></a></li> <li><a href="pages.html"><span>Related Pages</span></a></li> <li><a href="namespaces.html"><span>Namespaces</span></a></li> <li><a href="annotated.html"><span>Classes</span></a></li> <li class="current"><a href="files.html"><span>Files</span></a></li> </ul> </div> <div id="navrow2" class="tabs2"> <ul class="tablist"> <li><a href="files.html"><span>File List</span></a></li> </ul> </div> <div id="nav-path" class="navpath"> <ul> <li class="navelem"><a class="el" href="dir_78009f08da3e03d86b70776dcc463e92.html">include</a></li><li class="navelem"><a class="el" href="dir_40c9e98f0599f998dfc16f8b0ec4bf37.html">geos</a></li><li class="navelem"><a class="el" href="dir_67f3340353d8558b9d1caebb1f793818.html">operation</a></li><li class="navelem"><a class="el" href="dir_f9762db72a4501c88c1aeec4abc7ed39.html">overlay</a></li><li class="navelem"><a class="el" href="dir_ebb60545a6fea479f28464cefe65fa34.html">snap</a></li> </ul> </div> </div><!-- top --> <div class="header"> <div class="headertitle"> <div class="title">LineStringSnapper.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) 2009-2010 Sandro Santilli <strk@keybit.net></span></div> <div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * Copyright (C) 2006 Refractions Research 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: operation/overlay/snap/LineStringSnapper.java r320 (JTS-1.12)</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_OP_OVERLAY_SNAP_LINESTRINGSNAPPER_H</span></div> <div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor"></span><span class="preprocessor">#define GEOS_OP_OVERLAY_SNAP_LINESTRINGSNAPPER_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/geom/Coordinate.h></span></div> <div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#include <geos/geom/CoordinateSequence.h></span></div> <div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include <geos/geom/CoordinateList.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 <memory></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="comment">// Forward declarations</span></div> <div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="keyword">namespace </span>geos {</div> <div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  <span class="keyword">namespace </span>geom { </div> <div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  <span class="comment">//class PrecisionModel;</span></div> <div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  <span class="comment">//class CoordinateSequence;</span></div> <div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  <span class="keyword">class </span>CoordinateList;</div> <div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  <span class="keyword">class </span>Geometry;</div> <div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  }</div> <div class="line"><a name="l00037"></a><span class="lineno"> 37</span> }</div> <div class="line"><a name="l00038"></a><span class="lineno"> 38</span> </div> <div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="keyword">namespace </span>geos {</div> <div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="keyword">namespace </span>operation { <span class="comment">// geos::operation</span></div> <div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="keyword">namespace </span>overlay { <span class="comment">// geos::operation::overlay</span></div> <div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="keyword">namespace </span>snap { <span class="comment">// geos::operation::overlay::snap</span></div> <div class="line"><a name="l00043"></a><span class="lineno"> 43</span> </div> <div class="line"><a name="l00051"></a><span class="lineno"><a class="line" href="classgeos_1_1operation_1_1overlay_1_1snap_1_1LineStringSnapper.html"> 51</a></span> <span class="keyword">class </span>GEOS_DLL <a class="code" href="classgeos_1_1operation_1_1overlay_1_1snap_1_1LineStringSnapper.html">LineStringSnapper</a> {</div> <div class="line"><a name="l00052"></a><span class="lineno"> 52</span> </div> <div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="keyword">public</span>:</div> <div class="line"><a name="l00054"></a><span class="lineno"> 54</span> </div> <div class="line"><a name="l00062"></a><span class="lineno"><a class="line" href="classgeos_1_1operation_1_1overlay_1_1snap_1_1LineStringSnapper.html#ac1ed05effa3c85f646a7be278f460fdc"> 62</a></span>  <a class="code" href="classgeos_1_1operation_1_1overlay_1_1snap_1_1LineStringSnapper.html#ac1ed05effa3c85f646a7be278f460fdc">LineStringSnapper</a>(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html#a59345d3a409b5d2ebe01fcfcdcca92cb">geom::Coordinate::Vect</a>& nSrcPts,</div> <div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keywordtype">double</span> nSnapTol)</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>  srcPts(nSrcPts),</div> <div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  snapTolerance(nSnapTol),</div> <div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  allowSnappingToSourceVertices(false)</div> <div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  {</div> <div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keywordtype">size_t</span> s = srcPts.size();</div> <div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  isClosed = s < 2 ? <span class="keyword">false</span> : srcPts[0].equals2D(srcPts[s-1]);</div> <div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  }</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">// Snap points are assumed to be all distinct points (a set would be better, uh ?)</span></div> <div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  std::auto_ptr<geom::Coordinate::Vect> snapTo(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html#a1735d833ea7d033b82c317f883948525">geom::Coordinate::ConstVect</a>& snapPts);</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="keywordtype">void</span> setAllowSnappingToSourceVertices(<span class="keywordtype">bool</span> allow) {</div> <div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  allowSnappingToSourceVertices = allow;</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> <span class="keyword">private</span>:</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>  <span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html#a59345d3a409b5d2ebe01fcfcdcca92cb">geom::Coordinate::Vect</a>& srcPts;</div> <div class="line"><a name="l00083"></a><span class="lineno"> 83</span> </div> <div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keywordtype">double</span> snapTolerance;</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="keywordtype">bool</span> allowSnappingToSourceVertices;</div> <div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="keywordtype">bool</span> isClosed;</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> </div> <div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="comment">// Modifies first arg</span></div> <div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="keywordtype">void</span> snapVertices(<a class="code" href="classgeos_1_1geom_1_1CoordinateList.html">geom::CoordinateList</a>& srcCoords,</div> <div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html#a1735d833ea7d033b82c317f883948525">geom::Coordinate::ConstVect</a>& snapPts);</div> <div class="line"><a name="l00093"></a><span class="lineno"> 93</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="comment">// Returns snapPts.end() if no snap point is close enough (within snapTol distance)</span></div> <div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  geom::Coordinate::ConstVect::const_iterator findSnapForVertex(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a>& pt,</div> <div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html#a1735d833ea7d033b82c317f883948525">geom::Coordinate::ConstVect</a>& snapPts);</div> <div class="line"><a name="l00098"></a><span class="lineno"> 98</span> </div> <div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keywordtype">void</span> snapSegments(<a class="code" href="classgeos_1_1geom_1_1CoordinateList.html">geom::CoordinateList</a>& srcCoords,</div> <div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html#a1735d833ea7d033b82c317f883948525">geom::Coordinate::ConstVect</a>& snapPts);</div> <div class="line"><a name="l00116"></a><span class="lineno"> 116</span> </div> <div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="comment">//</span></div> <div class="line"><a name="l00144"></a><span class="lineno"> 144</span> <span class="comment"></span> geom::CoordinateList::iterator findSegmentToSnap(</div> <div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a>& snapPt,</div> <div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  geom::CoordinateList::iterator from,</div> <div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  geom::CoordinateList::iterator too_far);</div> <div class="line"><a name="l00148"></a><span class="lineno"> 148</span> </div> <div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  geom::CoordinateList::iterator findVertexToSnap(</div> <div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  <span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a>& snapPt,</div> <div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  geom::CoordinateList::iterator from,</div> <div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  geom::CoordinateList::iterator too_far);</div> <div class="line"><a name="l00153"></a><span class="lineno"> 153</span> </div> <div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <span class="comment">// Declare type as noncopyable</span></div> <div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  LineStringSnapper(<span class="keyword">const</span> LineStringSnapper& other);</div> <div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  LineStringSnapper& operator=(<span class="keyword">const</span> LineStringSnapper& rhs);</div> <div class="line"><a name="l00157"></a><span class="lineno"> 157</span> };</div> <div class="line"><a name="l00158"></a><span class="lineno"> 158</span> </div> <div class="line"><a name="l00159"></a><span class="lineno"> 159</span> </div> <div class="line"><a name="l00160"></a><span class="lineno"> 160</span> } <span class="comment">// namespace geos::operation::overlay::snap</span></div> <div class="line"><a name="l00161"></a><span class="lineno"> 161</span> } <span class="comment">// namespace geos::operation::overlay</span></div> <div class="line"><a name="l00162"></a><span class="lineno"> 162</span> } <span class="comment">// namespace geos::operation</span></div> <div class="line"><a name="l00163"></a><span class="lineno"> 163</span> } <span class="comment">// namespace geos</span></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> <span class="preprocessor">#endif // GEOS_OP_OVERLAY_SNAP_LINESTRINGSNAPPER_H</span></div> <div class="line"><a name="l00166"></a><span class="lineno"> 166</span> <span class="preprocessor"></span></div> <div class="ttc" id="classgeos_1_1operation_1_1overlay_1_1snap_1_1LineStringSnapper_html"><div class="ttname"><a href="classgeos_1_1operation_1_1overlay_1_1snap_1_1LineStringSnapper.html">geos::operation::overlay::snap::LineStringSnapper</a></div><div class="ttdoc">Snaps the vertices and segments of a LineString to a set of target snap vertices. ...</div><div class="ttdef"><b>Definition:</b> LineStringSnapper.h:51</div></div> <div class="ttc" id="classgeos_1_1geom_1_1Coordinate_html_a1735d833ea7d033b82c317f883948525"><div class="ttname"><a href="classgeos_1_1geom_1_1Coordinate.html#a1735d833ea7d033b82c317f883948525">geos::geom::Coordinate::ConstVect</a></div><div class="ttdeci">std::vector< const Coordinate * > ConstVect</div><div class="ttdoc">A vector of const Coordinate pointers. </div><div class="ttdef"><b>Definition:</b> Coordinate.h:71</div></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_1Coordinate_html_a59345d3a409b5d2ebe01fcfcdcca92cb"><div class="ttname"><a href="classgeos_1_1geom_1_1Coordinate.html#a59345d3a409b5d2ebe01fcfcdcca92cb">geos::geom::Coordinate::Vect</a></div><div class="ttdeci">std::vector< Coordinate > Vect</div><div class="ttdoc">A vector of Coordinate objects (real object, not pointers) </div><div class="ttdef"><b>Definition:</b> Coordinate.h:77</div></div> <div class="ttc" id="classgeos_1_1geom_1_1CoordinateList_html"><div class="ttname"><a href="classgeos_1_1geom_1_1CoordinateList.html">geos::geom::CoordinateList</a></div><div class="ttdoc">A list of Coordinates, which may be set to prevent repeated coordinates from occuring in the list...</div><div class="ttdef"><b>Definition:</b> CoordinateList.h:55</div></div> <div class="ttc" id="classgeos_1_1operation_1_1overlay_1_1snap_1_1LineStringSnapper_html_ac1ed05effa3c85f646a7be278f460fdc"><div class="ttname"><a href="classgeos_1_1operation_1_1overlay_1_1snap_1_1LineStringSnapper.html#ac1ed05effa3c85f646a7be278f460fdc">geos::operation::overlay::snap::LineStringSnapper::LineStringSnapper</a></div><div class="ttdeci">LineStringSnapper(const geom::Coordinate::Vect &nSrcPts, double nSnapTol)</div><div class="ttdef"><b>Definition:</b> LineStringSnapper.h:62</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>