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class="header"> <div class="headertitle"> <div class="title">PointPairDistance.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 Sandro Santilli <strk@keybit.net></span></div> <div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> *</span></div> <div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * This is free software; you can redistribute and/or modify it under</span></div> <div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * the terms of the GNU Lesser General Public Licence as published</span></div> <div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> * by the Free Software Foundation. </span></div> <div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * See the COPYING file for more information.</span></div> <div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> *</span></div> <div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> **********************************************************************</span></div> <div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> *</span></div> <div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * Last port: algorithm/distance/PointPairDistance.java 1.1 (JTS-1.9)</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"> **********************************************************************/</span></div> <div class="line"><a name="l00018"></a><span class="lineno"> 18</span> </div> <div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="preprocessor">#ifndef GEOS_ALGORITHM_DISTANCE_POINTPAIRDISTANCE_H</span></div> <div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor"></span><span class="preprocessor">#define GEOS_ALGORITHM_DISTANCE_POINTPAIRDISTANCE_H</span></div> <div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor"></span></div> <div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#include <geos/platform.h></span> <span class="comment">// for DoubleNotANumber</span></div> <div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#include <geos/geom/Coordinate.h></span> <span class="comment">// for inlines</span></div> <div class="line"><a name="l00024"></a><span class="lineno"> 24</span> </div> <div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include <vector></span> <span class="comment">// for composition</span></div> <div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#include <cassert></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="keyword">namespace </span>geos {</div> <div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="keyword">namespace </span>algorithm { <span class="comment">// geos::algorithm</span></div> <div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="keyword">namespace </span>distance { <span class="comment">// geos::algorithm::distance</span></div> <div class="line"><a name="l00031"></a><span class="lineno"> 31</span> </div> <div class="line"><a name="l00037"></a><span class="lineno"><a class="line" href="classgeos_1_1algorithm_1_1distance_1_1PointPairDistance.html"> 37</a></span> <span class="keyword">class </span><a class="code" href="classgeos_1_1algorithm_1_1distance_1_1PointPairDistance.html">PointPairDistance</a></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">public</span>:</div> <div class="line"><a name="l00040"></a><span class="lineno"> 40</span> </div> <div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <a class="code" href="classgeos_1_1algorithm_1_1distance_1_1PointPairDistance.html">PointPairDistance</a>()</div> <div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  :</div> <div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  pt(2),</div> <div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  distance(DoubleNotANumber),</div> <div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  isNull(<span class="keyword">true</span>)</div> <div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  {</div> <div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  assert(pt.size() == 2);</div> <div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  }</div> <div class="line"><a name="l00049"></a><span class="lineno"> 49</span> </div> <div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keywordtype">void</span> initialize()</div> <div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  {</div> <div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  isNull = <span class="keyword">true</span>;</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> </div> <div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keywordtype">void</span> initialize(<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>  pt[0] = p0;</div> <div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  pt[1] = p1;</div> <div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  distance = p0.<a class="code" href="classgeos_1_1geom_1_1Coordinate.html#a9a30687133579e261178d099a238ef19">distance</a>(p1);</div> <div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  isNull = <span class="keyword">false</span>;</div> <div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  }</div> <div class="line"><a name="l00062"></a><span class="lineno"> 62</span> </div> <div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keywordtype">double</span> getDistance()<span class="keyword"> const</span></div> <div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="keyword"> </span>{</div> <div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keywordflow">return</span> distance;</div> <div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  }</div> <div class="line"><a name="l00067"></a><span class="lineno"> 67</span> </div> <div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keyword">const</span> std::vector<geom::Coordinate>& getCoordinates()<span class="keyword"> const</span></div> <div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="keyword"> </span>{</div> <div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keywordflow">return</span> pt;</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="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a>& getCoordinate(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i)<span class="keyword"> const</span></div> <div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="keyword"> </span>{</div> <div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  assert(i<pt.size());</div> <div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keywordflow">return</span> pt[i];</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> </div> <div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keywordtype">void</span> setMaximum(<span class="keyword">const</span> <a class="code" href="classgeos_1_1algorithm_1_1distance_1_1PointPairDistance.html">PointPairDistance</a>& ptDist)</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>  setMaximum(ptDist.pt[0], ptDist.pt[1]);</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> </div> <div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keywordtype">void</span> setMaximum(<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="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> (isNull) {</div> <div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  initialize(p0, p1);</div> <div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="keywordflow">return</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="keywordtype">double</span> dist = p0.<a class="code" href="classgeos_1_1geom_1_1Coordinate.html#a9a30687133579e261178d099a238ef19">distance</a>(p1);</div> <div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="keywordflow">if</span> (dist > distance)</div> <div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  initialize(p0, p1, dist);</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="keywordtype">void</span> setMinimum(<span class="keyword">const</span> <a class="code" href="classgeos_1_1algorithm_1_1distance_1_1PointPairDistance.html">PointPairDistance</a>& ptDist)</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>  setMinimum(ptDist.pt[0], ptDist.pt[1]);</div> <div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  }</div> <div class="line"><a name="l00099"></a><span class="lineno"> 99</span> </div> <div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="keywordtype">void</span> setMinimum(<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="l00101"></a><span class="lineno"> 101</span>  {</div> <div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="keywordflow">if</span> (isNull) {</div> <div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  initialize(p0, p1);</div> <div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keywordflow">return</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>  <span class="keywordtype">double</span> dist = p0.<a class="code" href="classgeos_1_1geom_1_1Coordinate.html#a9a30687133579e261178d099a238ef19">distance</a>(p1);</div> <div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="keywordflow">if</span> (dist < distance)</div> <div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  initialize(p0, p1, dist);</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> </div> <div class="line"><a name="l00111"></a><span class="lineno"> 111</span> <span class="keyword">private</span>:</div> <div class="line"><a name="l00112"></a><span class="lineno"> 112</span> </div> <div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <span class="keywordtype">void</span> initialize(<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="l00120"></a><span class="lineno"> 120</span>  <span class="keywordtype">double</span> dist)</div> <div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  {</div> <div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  pt[0] = p0;</div> <div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  pt[1] = p1;</div> <div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  distance = dist;</div> <div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  isNull = <span class="keyword">false</span>;</div> <div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  }</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>  std::vector<geom::Coordinate> pt;</div> <div class="line"><a name="l00129"></a><span class="lineno"> 129</span> </div> <div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  <span class="keywordtype">double</span> distance;</div> <div class="line"><a name="l00131"></a><span class="lineno"> 131</span> </div> <div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="keywordtype">bool</span> isNull;</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="comment">// geos::algorithm::distance</span></div> <div class="line"><a name="l00136"></a><span class="lineno"> 136</span> } <span class="comment">// geos::algorithm</span></div> <div class="line"><a name="l00137"></a><span class="lineno"> 137</span> } <span class="comment">// geos</span></div> <div class="line"><a name="l00138"></a><span class="lineno"> 138</span> </div> <div class="line"><a name="l00139"></a><span class="lineno"> 139</span> <span class="preprocessor">#endif // GEOS_ALGORITHM_DISTANCE_POINTPAIRDISTANCE_H</span></div> <div class="line"><a name="l00140"></a><span class="lineno"> 140</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_1distance_1_1PointPairDistance_html"><div class="ttname"><a href="classgeos_1_1algorithm_1_1distance_1_1PointPairDistance.html">geos::algorithm::distance::PointPairDistance</a></div><div class="ttdef"><b>Definition:</b> PointPairDistance.h:37</div></div> <div class="ttc" id="classgeos_1_1geom_1_1Coordinate_html_a9a30687133579e261178d099a238ef19"><div class="ttname"><a href="classgeos_1_1geom_1_1Coordinate.html#a9a30687133579e261178d099a238ef19">geos::geom::Coordinate::distance</a></div><div class="ttdeci">double distance(const Coordinate &p) const </div></div> </div><!-- fragment --></div><!-- contents --> <!-- start footer part --> <hr class="footer"/><address class="footer"><small> Generated by  <a 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