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<div class="title">qwt_weeding_curve_fitter.cpp</div> </div>
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<div class="contents">
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/******************************************************************************</span></div>
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<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * Qwt Widget Library</span></div>
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<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * Copyright (C) 1997 Josef Wilgen</span></div>
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<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * Copyright (C) 2002 Uwe Rathmann</span></div>
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<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> *</span></div>
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<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * This library is free software; you can redistribute it and/or</span></div>
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<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * modify it under the terms of the Qwt License, Version 1.0</span></div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> *****************************************************************************/</span></div>
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<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>  </div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="preprocessor">#include "qwt_weeding_curve_fitter.h"</span></div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include "qwt_math.h"</span></div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>  </div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#include <qpainterpath.h></span></div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#include <qpolygon.h></span></div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor">#include <qstack.h></span></div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#include <qvector.h></span></div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>  </div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="keyword">class </span>QwtWeedingCurveFitter::PrivateData</div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> {</div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>  <span class="keyword">public</span>:</div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>  PrivateData()</div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>  : <a class="code" href="class_qwt_weeding_curve_fitter.html#a484813f52d921cc5dc57bb6dcf82668d">tolerance</a>( 1.0 )</div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>  , <a class="code" href="class_qwt_weeding_curve_fitter.html#adfffe6d108f7170bafe5cc81379eaef7">chunkSize</a>( 0 )</div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  {</div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  }</div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  </div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  <span class="keywordtype">double</span> <a class="code" href="class_qwt_weeding_curve_fitter.html#a484813f52d921cc5dc57bb6dcf82668d">tolerance</a>;</div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  uint <a class="code" href="class_qwt_weeding_curve_fitter.html#adfffe6d108f7170bafe5cc81379eaef7">chunkSize</a>;</div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> };</div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  </div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="keyword">class </span>QwtWeedingCurveFitter::Line</div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> {</div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  <span class="keyword">public</span>:</div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  Line( <span class="keywordtype">int</span> i1 = 0, <span class="keywordtype">int</span> i2 = 0 )</div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  : from( i1 )</div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  , to( i2 )</div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  {</div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  }</div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  </div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="keywordtype">int</span> from;</div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <span class="keywordtype">int</span> to;</div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> };</div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  </div>
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<div class="line"><a name="l00050"></a><span class="lineno"><a class="line" href="class_qwt_weeding_curve_fitter.html#a7deb4d070a329cbdee454023194898a7"> 50</a></span> <a class="code" href="class_qwt_weeding_curve_fitter.html#a7deb4d070a329cbdee454023194898a7">QwtWeedingCurveFitter::QwtWeedingCurveFitter</a>( <span class="keywordtype">double</span> tolerance )</div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  : <a class="code" href="class_qwt_curve_fitter.html">QwtCurveFitter</a>( <a class="code" href="class_qwt_curve_fitter.html">QwtCurveFitter</a>::Polygon )</div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> {</div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  m_data = <span class="keyword">new</span> PrivateData;</div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <a class="code" href="class_qwt_weeding_curve_fitter.html#a62c303f6826fef2be7b7bbe82f530680">setTolerance</a>( <a class="code" href="class_qwt_weeding_curve_fitter.html#a484813f52d921cc5dc57bb6dcf82668d">tolerance</a> );</div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> }</div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  </div>
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<div class="line"><a name="l00058"></a><span class="lineno"><a class="line" href="class_qwt_weeding_curve_fitter.html#abbd30a948fc6974f881678f80a29768c"> 58</a></span> <a class="code" href="class_qwt_weeding_curve_fitter.html#abbd30a948fc6974f881678f80a29768c">QwtWeedingCurveFitter::~QwtWeedingCurveFitter</a>()</div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> {</div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keyword">delete</span> m_data;</div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> }</div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  </div>
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<div class="line"><a name="l00076"></a><span class="lineno"><a class="line" href="class_qwt_weeding_curve_fitter.html#a62c303f6826fef2be7b7bbe82f530680"> 76</a></span> <span class="keywordtype">void</span> <a class="code" href="class_qwt_weeding_curve_fitter.html#a62c303f6826fef2be7b7bbe82f530680">QwtWeedingCurveFitter::setTolerance</a>( <span class="keywordtype">double</span> tolerance )</div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> {</div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  m_data->tolerance = qwtMaxF( <a class="code" href="class_qwt_weeding_curve_fitter.html#a484813f52d921cc5dc57bb6dcf82668d">tolerance</a>, 0.0 );</div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> }</div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  </div>
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<div class="line"><a name="l00085"></a><span class="lineno"><a class="line" href="class_qwt_weeding_curve_fitter.html#a484813f52d921cc5dc57bb6dcf82668d"> 85</a></span> <span class="keywordtype">double</span> <a class="code" href="class_qwt_weeding_curve_fitter.html#a484813f52d921cc5dc57bb6dcf82668d">QwtWeedingCurveFitter::tolerance</a>()<span class="keyword"> const</span></div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> <span class="keyword"></span>{</div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="keywordflow">return</span> m_data->tolerance;</div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> }</div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  </div>
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<div class="line"><a name="l00101"></a><span class="lineno"><a class="line" href="class_qwt_weeding_curve_fitter.html#a9f17a819447cba0e733bd71d90ee2766"> 101</a></span> <span class="keywordtype">void</span> <a class="code" href="class_qwt_weeding_curve_fitter.html#a9f17a819447cba0e733bd71d90ee2766">QwtWeedingCurveFitter::setChunkSize</a>( uint numPoints )</div>
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<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> {</div>
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<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="keywordflow">if</span> ( numPoints > 0 )</div>
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<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  numPoints = qMax( numPoints, 3U );</div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  </div>
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<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  m_data->chunkSize = numPoints;</div>
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<div class="line"><a name="l00107"></a><span class="lineno"> 107</span> }</div>
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<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  </div>
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<div class="line"><a name="l00114"></a><span class="lineno"><a class="line" href="class_qwt_weeding_curve_fitter.html#adfffe6d108f7170bafe5cc81379eaef7"> 114</a></span> uint <a class="code" href="class_qwt_weeding_curve_fitter.html#adfffe6d108f7170bafe5cc81379eaef7">QwtWeedingCurveFitter::chunkSize</a>()<span class="keyword"> const</span></div>
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<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> <span class="keyword"></span>{</div>
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<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="keywordflow">return</span> m_data->chunkSize;</div>
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<div class="line"><a name="l00117"></a><span class="lineno"> 117</span> }</div>
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<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  </div>
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<div class="line"><a name="l00124"></a><span class="lineno"><a class="line" href="class_qwt_weeding_curve_fitter.html#a374b476ce3ea491760ff7d0ccda0fedf"> 124</a></span> QPolygonF <a class="code" href="class_qwt_weeding_curve_fitter.html#a374b476ce3ea491760ff7d0ccda0fedf">QwtWeedingCurveFitter::fitCurve</a>( <span class="keyword">const</span> QPolygonF& points )<span class="keyword"> const</span></div>
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<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <span class="keyword"></span>{</div>
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<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keywordflow">if</span> ( points.isEmpty() )</div>
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<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="keywordflow">return</span> points;</div>
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<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  </div>
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<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  QPolygonF fittedPoints;</div>
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<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  <span class="keywordflow">if</span> ( m_data->chunkSize == 0 )</div>
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<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  {</div>
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<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  fittedPoints = simplify( points );</div>
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<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  }</div>
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<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  <span class="keywordflow">else</span></div>
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<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  {</div>
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<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="keywordflow">for</span> ( <span class="keywordtype">int</span> i = 0; i < points.size(); i += m_data->chunkSize )</div>
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<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  {</div>
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<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="keyword">const</span> QPolygonF p = points.mid( i, m_data->chunkSize );</div>
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<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  fittedPoints += simplify( p );</div>
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<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  }</div>
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<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  }</div>
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<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  </div>
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<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <span class="keywordflow">return</span> fittedPoints;</div>
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<div class="line"><a name="l00144"></a><span class="lineno"> 144</span> }</div>
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<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  </div>
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<div class="line"><a name="l00151"></a><span class="lineno"><a class="line" href="class_qwt_weeding_curve_fitter.html#ad5c04dcd161b8e238c53a753716eff5c"> 151</a></span> QPainterPath <a class="code" href="class_qwt_weeding_curve_fitter.html#ad5c04dcd161b8e238c53a753716eff5c">QwtWeedingCurveFitter::fitCurvePath</a>( <span class="keyword">const</span> QPolygonF& points )<span class="keyword"> const</span></div>
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<div class="line"><a name="l00152"></a><span class="lineno"> 152</span> <span class="keyword"></span>{</div>
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<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  QPainterPath path;</div>
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<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  path.addPolygon( <a class="code" href="class_qwt_weeding_curve_fitter.html#a374b476ce3ea491760ff7d0ccda0fedf">fitCurve</a>( points ) );</div>
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<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <span class="keywordflow">return</span> path;</div>
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<div class="line"><a name="l00156"></a><span class="lineno"> 156</span> }</div>
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<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  </div>
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<div class="line"><a name="l00158"></a><span class="lineno"> 158</span> QPolygonF QwtWeedingCurveFitter::simplify( <span class="keyword">const</span> QPolygonF& points )<span class="keyword"> const</span></div>
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<div class="line"><a name="l00159"></a><span class="lineno"> 159</span> <span class="keyword"></span>{</div>
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<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> toleranceSqr = m_data->tolerance * m_data->tolerance;</div>
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<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  </div>
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<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <a class="code" href="class_q_stack.html">QStack< Line ></a> stack;</div>
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<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  stack.reserve( 500 );</div>
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<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  </div>
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<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  <span class="keyword">const</span> QPointF* p = points.data();</div>
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<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> nPoints = points.size();</div>
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<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  </div>
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<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <a class="code" href="class_q_vector.html">QVector< bool ></a> usePoint( nPoints, <span class="keyword">false</span> );</div>
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<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  </div>
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<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  stack.push( Line( 0, nPoints - 1 ) );</div>
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<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  </div>
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<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  <span class="keywordflow">while</span> ( !stack.isEmpty() )</div>
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<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  {</div>
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<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <span class="keyword">const</span> Line r = stack.pop();</div>
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<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  </div>
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<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  <span class="comment">// initialize line segment</span></div>
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<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> vecX = p[r.to].x() - p[r.from].x();</div>
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<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> vecY = p[r.to].y() - p[r.from].y();</div>
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<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  </div>
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<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> vecLength = std::sqrt( vecX * vecX + vecY * vecY );</div>
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<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  </div>
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<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> unitVecX = ( vecLength != 0.0 ) ? vecX / vecLength : 0.0;</div>
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<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> unitVecY = ( vecLength != 0.0 ) ? vecY / vecLength : 0.0;</div>
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<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  </div>
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<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  <span class="keywordtype">double</span> maxDistSqr = 0.0;</div>
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<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  <span class="keywordtype">int</span> nVertexIndexMaxDistance = r.from + 1;</div>
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<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  <span class="keywordflow">for</span> ( <span class="keywordtype">int</span> i = r.from + 1; i < r.to; i++ )</div>
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<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  {</div>
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<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  <span class="comment">//compare to anchor</span></div>
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<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> fromVecX = p[i].x() - p[r.from].x();</div>
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<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> fromVecY = p[i].y() - p[r.from].y();</div>
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<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  </div>
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<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  <span class="keywordtype">double</span> distToSegmentSqr;</div>
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<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <span class="keywordflow">if</span> ( fromVecX * unitVecX + fromVecY * unitVecY < 0.0 )</div>
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<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  {</div>
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<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  distToSegmentSqr = fromVecX * fromVecX + fromVecY * fromVecY;</div>
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<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  }</div>
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<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  <span class="keywordflow">else</span></div>
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<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  {</div>
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<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> toVecX = p[i].x() - p[r.to].x();</div>
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<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> toVecY = p[i].y() - p[r.to].y();</div>
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<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> toVecLength = toVecX * toVecX + toVecY * toVecY;</div>
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<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  </div>
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<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> s = toVecX * ( -unitVecX ) + toVecY * ( -unitVecY );</div>
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<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  <span class="keywordflow">if</span> ( s < 0.0 )</div>
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<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  {</div>
|
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<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  distToSegmentSqr = toVecLength;</div>
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<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  }</div>
|
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<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  <span class="keywordflow">else</span></div>
|
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<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  {</div>
|
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<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  distToSegmentSqr = std::fabs( toVecLength - s * s );</div>
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<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  }</div>
|
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<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  }</div>
|
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<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  </div>
|
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<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  <span class="keywordflow">if</span> ( maxDistSqr < distToSegmentSqr )</div>
|
|
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  {</div>
|
|
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  maxDistSqr = distToSegmentSqr;</div>
|
|
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  nVertexIndexMaxDistance = i;</div>
|
|
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  }</div>
|
|
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  }</div>
|
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<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  <span class="keywordflow">if</span> ( maxDistSqr <= toleranceSqr )</div>
|
|
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  {</div>
|
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<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  usePoint[r.from] = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  usePoint[r.to] = <span class="keyword">true</span>;</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>  <span class="keywordflow">else</span></div>
|
|
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  {</div>
|
|
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  stack.push( Line( r.from, nVertexIndexMaxDistance ) );</div>
|
|
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  stack.push( Line( nVertexIndexMaxDistance, r.to ) );</div>
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<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  }</div>
|
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<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  }</div>
|
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<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  </div>
|
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<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  QPolygonF stripped;</div>
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|
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  <span class="keywordflow">for</span> ( <span class="keywordtype">int</span> i = 0; i < nPoints; i++ )</div>
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|
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  {</div>
|
|
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  <span class="keywordflow">if</span> ( usePoint[i] )</div>
|
|
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  stripped += p[i];</div>
|
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<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  }</div>
|
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<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  </div>
|
|
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  <span class="keywordflow">return</span> stripped;</div>
|
|
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span> }</div>
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<div class="ttc" id="aclass_q_stack_html"><div class="ttname"><a href="class_q_stack.html">QStack</a></div><div class="ttdef"><b>Definition:</b> <a href="qwt__plot__zoomer_8h_source.html#l00017">qwt_plot_zoomer.h:17</a></div></div>
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<div class="ttc" id="aclass_q_vector_html"><div class="ttname"><a href="class_q_vector.html">QVector</a></div><div class="ttdef"><b>Definition:</b> <a href="qwt__clipper_8h_source.html#l00023">qwt_clipper.h:23</a></div></div>
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<div class="ttc" id="aclass_qwt_curve_fitter_html"><div class="ttname"><a href="class_qwt_curve_fitter.html">QwtCurveFitter</a></div><div class="ttdoc">Abstract base class for a curve fitter.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__curve__fitter_8h_source.html#l00021">qwt_curve_fitter.h:22</a></div></div>
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<div class="ttc" id="aclass_qwt_weeding_curve_fitter_html_a374b476ce3ea491760ff7d0ccda0fedf"><div class="ttname"><a href="class_qwt_weeding_curve_fitter.html#a374b476ce3ea491760ff7d0ccda0fedf">QwtWeedingCurveFitter::fitCurve</a></div><div class="ttdeci">virtual QPolygonF fitCurve(const QPolygonF &) const override</div><div class="ttdef"><b>Definition:</b> <a href="qwt__weeding__curve__fitter_8cpp_source.html#l00124">qwt_weeding_curve_fitter.cpp:124</a></div></div>
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<div class="ttc" id="aclass_qwt_weeding_curve_fitter_html_a484813f52d921cc5dc57bb6dcf82668d"><div class="ttname"><a href="class_qwt_weeding_curve_fitter.html#a484813f52d921cc5dc57bb6dcf82668d">QwtWeedingCurveFitter::tolerance</a></div><div class="ttdeci">double tolerance() const</div><div class="ttdef"><b>Definition:</b> <a href="qwt__weeding__curve__fitter_8cpp_source.html#l00085">qwt_weeding_curve_fitter.cpp:85</a></div></div>
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<div class="ttc" id="aclass_qwt_weeding_curve_fitter_html_a62c303f6826fef2be7b7bbe82f530680"><div class="ttname"><a href="class_qwt_weeding_curve_fitter.html#a62c303f6826fef2be7b7bbe82f530680">QwtWeedingCurveFitter::setTolerance</a></div><div class="ttdeci">void setTolerance(double)</div><div class="ttdef"><b>Definition:</b> <a href="qwt__weeding__curve__fitter_8cpp_source.html#l00076">qwt_weeding_curve_fitter.cpp:76</a></div></div>
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<div class="ttc" id="aclass_qwt_weeding_curve_fitter_html_a7deb4d070a329cbdee454023194898a7"><div class="ttname"><a href="class_qwt_weeding_curve_fitter.html#a7deb4d070a329cbdee454023194898a7">QwtWeedingCurveFitter::QwtWeedingCurveFitter</a></div><div class="ttdeci">QwtWeedingCurveFitter(double tolerance=1.0)</div><div class="ttdef"><b>Definition:</b> <a href="qwt__weeding__curve__fitter_8cpp_source.html#l00050">qwt_weeding_curve_fitter.cpp:50</a></div></div>
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<div class="ttc" id="aclass_qwt_weeding_curve_fitter_html_a9f17a819447cba0e733bd71d90ee2766"><div class="ttname"><a href="class_qwt_weeding_curve_fitter.html#a9f17a819447cba0e733bd71d90ee2766">QwtWeedingCurveFitter::setChunkSize</a></div><div class="ttdeci">void setChunkSize(uint)</div><div class="ttdef"><b>Definition:</b> <a href="qwt__weeding__curve__fitter_8cpp_source.html#l00101">qwt_weeding_curve_fitter.cpp:101</a></div></div>
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<div class="ttc" id="aclass_qwt_weeding_curve_fitter_html_abbd30a948fc6974f881678f80a29768c"><div class="ttname"><a href="class_qwt_weeding_curve_fitter.html#abbd30a948fc6974f881678f80a29768c">QwtWeedingCurveFitter::~QwtWeedingCurveFitter</a></div><div class="ttdeci">virtual ~QwtWeedingCurveFitter()</div><div class="ttdoc">Destructor.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__weeding__curve__fitter_8cpp_source.html#l00058">qwt_weeding_curve_fitter.cpp:58</a></div></div>
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<div class="ttc" id="aclass_qwt_weeding_curve_fitter_html_ad5c04dcd161b8e238c53a753716eff5c"><div class="ttname"><a href="class_qwt_weeding_curve_fitter.html#ad5c04dcd161b8e238c53a753716eff5c">QwtWeedingCurveFitter::fitCurvePath</a></div><div class="ttdeci">virtual QPainterPath fitCurvePath(const QPolygonF &) const override</div><div class="ttdef"><b>Definition:</b> <a href="qwt__weeding__curve__fitter_8cpp_source.html#l00151">qwt_weeding_curve_fitter.cpp:151</a></div></div>
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<div class="ttc" id="aclass_qwt_weeding_curve_fitter_html_adfffe6d108f7170bafe5cc81379eaef7"><div class="ttname"><a href="class_qwt_weeding_curve_fitter.html#adfffe6d108f7170bafe5cc81379eaef7">QwtWeedingCurveFitter::chunkSize</a></div><div class="ttdeci">uint chunkSize() const</div><div class="ttdef"><b>Definition:</b> <a href="qwt__weeding__curve__fitter_8cpp_source.html#l00114">qwt_weeding_curve_fitter.cpp:114</a></div></div>
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