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337 lines
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<div class="title">qwt_compass_rose.cpp</div> </div>
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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_compass_rose.h"</span></div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include "qwt_point_polar.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 <qpainter.h></span></div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#include <qpainterpath.h></span></div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>  </div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="keyword">static</span> QPointF qwtIntersection(</div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>  QPointF p11, QPointF p12, QPointF p21, QPointF p22 )</div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> {</div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>  <span class="keyword">const</span> QLineF line1( p11, p12 );</div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>  <span class="keyword">const</span> QLineF line2( p21, p22 );</div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>  </div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>  QPointF pos;</div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#if QT_VERSION >= 0x050e00</span></div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  <span class="keywordflow">if</span> ( line1.intersects( line2, &pos ) == QLineF::NoIntersection )</div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#else</span></div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  <span class="keywordflow">if</span> ( line1.intersect( line2, &pos ) == QLineF::NoIntersection )</div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#endif</span></div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  <span class="keywordflow">return</span> QPointF();</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>  <span class="keywordflow">return</span> pos;</div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> }</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="l00034"></a><span class="lineno"><a class="line" href="class_qwt_compass_rose.html#a23bb2634090d12711102f0add67d1170"> 34</a></span> <a class="code" href="class_qwt_compass_rose.html#a23bb2634090d12711102f0add67d1170">QwtCompassRose::QwtCompassRose</a>()</div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> {</div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> }</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="l00039"></a><span class="lineno"><a class="line" href="class_qwt_compass_rose.html#a04142768b55a3bfe9c17ea6878088674"> 39</a></span> <a class="code" href="class_qwt_compass_rose.html#a04142768b55a3bfe9c17ea6878088674">QwtCompassRose::~QwtCompassRose</a>()</div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> {</div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> }</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="l00044"></a><span class="lineno"><a class="line" href="class_qwt_compass_rose.html#a25f08ab6d05f4ad17b2e13395c60e7ca"> 44</a></span> <span class="keywordtype">void</span> <a class="code" href="class_qwt_compass_rose.html#a25f08ab6d05f4ad17b2e13395c60e7ca">QwtCompassRose::setPalette</a>( <span class="keyword">const</span> QPalette& p )</div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> {</div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  m_palette = p;</div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> }</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  </div>
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<div class="line"><a name="l00050"></a><span class="lineno"><a class="line" href="class_qwt_compass_rose.html#a36888d96ff67ae500fdfdee9b68940ad"> 50</a></span> <span class="keyword">const</span> QPalette& <a class="code" href="class_qwt_compass_rose.html#a36888d96ff67ae500fdfdee9b68940ad">QwtCompassRose::palette</a>()<span class="keyword"> const</span></div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="keyword"></span>{</div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keywordflow">return</span> m_palette;</div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> }</div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  </div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="keyword">class </span>QwtSimpleCompassRose::PrivateData</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="l00057"></a><span class="lineno"> 57</span>  <span class="keyword">public</span>:</div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  PrivateData()</div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  : <a class="code" href="class_qwt_simple_compass_rose.html#a3dbac7f18d6b4de2c202ddc7761d20f2">width</a>( 0.2 )</div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  , <a class="code" href="class_qwt_simple_compass_rose.html#a2c4df8d87a99b4e84e077773bf60956c">numThorns</a>( 8 )</div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  , <a class="code" href="class_qwt_simple_compass_rose.html#a6ea00a06b07d87798e2630b489fb619e">numThornLevels</a>( -1 )</div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  , <a class="code" href="class_qwt_simple_compass_rose.html#a60278de80aa517aaa0ab7af22d262c30">shrinkFactor</a>( 0.9 )</div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  {</div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  }</div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  </div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keywordtype">double</span> <a class="code" href="class_qwt_simple_compass_rose.html#a3dbac7f18d6b4de2c202ddc7761d20f2">width</a>;</div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keywordtype">int</span> <a class="code" href="class_qwt_simple_compass_rose.html#a2c4df8d87a99b4e84e077773bf60956c">numThorns</a>;</div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keywordtype">int</span> <a class="code" href="class_qwt_simple_compass_rose.html#a6ea00a06b07d87798e2630b489fb619e">numThornLevels</a>;</div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keywordtype">double</span> <a class="code" href="class_qwt_simple_compass_rose.html#a60278de80aa517aaa0ab7af22d262c30">shrinkFactor</a>;</div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> };</div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  </div>
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<div class="line"><a name="l00078"></a><span class="lineno"><a class="line" href="class_qwt_simple_compass_rose.html#a66cc98efe5717eaf11fb0e713cd1aa21"> 78</a></span> <a class="code" href="class_qwt_simple_compass_rose.html#a66cc98efe5717eaf11fb0e713cd1aa21">QwtSimpleCompassRose::QwtSimpleCompassRose</a>(</div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keywordtype">int</span> numThorns, <span class="keywordtype">int</span> numThornLevels )</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="l00081"></a><span class="lineno"> 81</span>  m_data = <span class="keyword">new</span> PrivateData();</div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  m_data->numThorns = <a class="code" href="class_qwt_simple_compass_rose.html#a2c4df8d87a99b4e84e077773bf60956c">numThorns</a>;</div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  m_data->numThornLevels = <a class="code" href="class_qwt_simple_compass_rose.html#a6ea00a06b07d87798e2630b489fb619e">numThornLevels</a>;</div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  </div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="keyword">const</span> QColor dark( 128, 128, 255 );</div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keyword">const</span> QColor light( 192, 255, 255 );</div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  </div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  QPalette <a class="code" href="class_qwt_compass_rose.html#a36888d96ff67ae500fdfdee9b68940ad">palette</a>;</div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <a class="code" href="class_qwt_compass_rose.html#a36888d96ff67ae500fdfdee9b68940ad">palette</a>.setColor( QPalette::Dark, dark );</div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <a class="code" href="class_qwt_compass_rose.html#a36888d96ff67ae500fdfdee9b68940ad">palette</a>.setColor( QPalette::Light, light );</div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  </div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <a class="code" href="class_qwt_compass_rose.html#a25f08ab6d05f4ad17b2e13395c60e7ca">setPalette</a>( <a class="code" href="class_qwt_compass_rose.html#a36888d96ff67ae500fdfdee9b68940ad">palette</a> );</div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> }</div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  </div>
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<div class="line"><a name="l00096"></a><span class="lineno"><a class="line" href="class_qwt_simple_compass_rose.html#a157304c9a535126d33a80df9a9dad292"> 96</a></span> <a class="code" href="class_qwt_simple_compass_rose.html#a157304c9a535126d33a80df9a9dad292">QwtSimpleCompassRose::~QwtSimpleCompassRose</a>()</div>
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<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> {</div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="keyword">delete</span> m_data;</div>
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<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> }</div>
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<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  </div>
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<div class="line"><a name="l00108"></a><span class="lineno"><a class="line" href="class_qwt_simple_compass_rose.html#afaf84e19eb8eb2360306860b02d46cfc"> 108</a></span> <span class="keywordtype">void</span> <a class="code" href="class_qwt_simple_compass_rose.html#afaf84e19eb8eb2360306860b02d46cfc">QwtSimpleCompassRose::setShrinkFactor</a>( <span class="keywordtype">double</span> factor )</div>
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<div class="line"><a name="l00109"></a><span class="lineno"> 109</span> {</div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  m_data->shrinkFactor = factor;</div>
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<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> }</div>
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<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  </div>
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<div class="line"><a name="l00117"></a><span class="lineno"><a class="line" href="class_qwt_simple_compass_rose.html#a60278de80aa517aaa0ab7af22d262c30"> 117</a></span> <span class="keywordtype">double</span> <a class="code" href="class_qwt_simple_compass_rose.html#a60278de80aa517aaa0ab7af22d262c30">QwtSimpleCompassRose::shrinkFactor</a>()<span class="keyword"> const</span></div>
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<div class="line"><a name="l00118"></a><span class="lineno"> 118</span> <span class="keyword"></span>{</div>
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<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <span class="keywordflow">return</span> m_data->shrinkFactor;</div>
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<div class="line"><a name="l00120"></a><span class="lineno"> 120</span> }</div>
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<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  </div>
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<div class="line"><a name="l00131"></a><span class="lineno"><a class="line" href="class_qwt_simple_compass_rose.html#a81ac925ddcc4ba29de333237c1cf2b6d"> 131</a></span> <span class="keywordtype">void</span> <a class="code" href="class_qwt_simple_compass_rose.html#a81ac925ddcc4ba29de333237c1cf2b6d">QwtSimpleCompassRose::draw</a>( QPainter* painter, <span class="keyword">const</span> QPointF& center,</div>
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<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="keywordtype">double</span> radius, <span class="keywordtype">double</span> north, QPalette::ColorGroup cg )<span class="keyword"> const</span></div>
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<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> <span class="keyword"></span>{</div>
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<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  QPalette pal = <a class="code" href="class_qwt_compass_rose.html#a36888d96ff67ae500fdfdee9b68940ad">palette</a>();</div>
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<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  pal.setCurrentColorGroup( cg );</div>
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<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  </div>
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<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <a class="code" href="class_qwt_simple_compass_rose.html#a9dfb04bbc8f776e18c88e5e03912249d">drawRose</a>( painter, pal, center, radius, north, m_data->width,</div>
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<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  m_data->numThorns, m_data->numThornLevels, m_data->shrinkFactor );</div>
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<div class="line"><a name="l00139"></a><span class="lineno"> 139</span> }</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="l00154"></a><span class="lineno"><a class="line" href="class_qwt_simple_compass_rose.html#a9dfb04bbc8f776e18c88e5e03912249d"> 154</a></span> <span class="keywordtype">void</span> <a class="code" href="class_qwt_simple_compass_rose.html#a9dfb04bbc8f776e18c88e5e03912249d">QwtSimpleCompassRose::drawRose</a>(</div>
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<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  QPainter* painter,</div>
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<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="keyword">const</span> QPalette& palette,</div>
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<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="keyword">const</span> QPointF& center, <span class="keywordtype">double</span> radius, <span class="keywordtype">double</span> north, <span class="keywordtype">double</span> width,</div>
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<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <span class="keywordtype">int</span> numThorns, <span class="keywordtype">int</span> numThornLevels, <span class="keywordtype">double</span> shrinkFactor )</div>
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<div class="line"><a name="l00159"></a><span class="lineno"> 159</span> {</div>
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<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_simple_compass_rose.html#a2c4df8d87a99b4e84e077773bf60956c">numThorns</a> < 4 )</div>
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<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <a class="code" href="class_qwt_simple_compass_rose.html#a2c4df8d87a99b4e84e077773bf60956c">numThorns</a> = 4;</div>
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<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  </div>
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<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_simple_compass_rose.html#a2c4df8d87a99b4e84e077773bf60956c">numThorns</a> % 4 )</div>
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<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <a class="code" href="class_qwt_simple_compass_rose.html#a2c4df8d87a99b4e84e077773bf60956c">numThorns</a> += 4 - <a class="code" href="class_qwt_simple_compass_rose.html#a2c4df8d87a99b4e84e077773bf60956c">numThorns</a> % 4;</div>
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<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  </div>
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<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_simple_compass_rose.html#a6ea00a06b07d87798e2630b489fb619e">numThornLevels</a> <= 0 )</div>
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<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <a class="code" href="class_qwt_simple_compass_rose.html#a6ea00a06b07d87798e2630b489fb619e">numThornLevels</a> = <a class="code" href="class_qwt_simple_compass_rose.html#a2c4df8d87a99b4e84e077773bf60956c">numThorns</a> / 4;</div>
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<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  </div>
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<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_simple_compass_rose.html#a60278de80aa517aaa0ab7af22d262c30">shrinkFactor</a> >= 1.0 )</div>
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<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  <a class="code" href="class_qwt_simple_compass_rose.html#a60278de80aa517aaa0ab7af22d262c30">shrinkFactor</a> = 1.0;</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">if</span> ( <a class="code" href="class_qwt_simple_compass_rose.html#a60278de80aa517aaa0ab7af22d262c30">shrinkFactor</a> <= 0.5 )</div>
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<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  <a class="code" href="class_qwt_simple_compass_rose.html#a60278de80aa517aaa0ab7af22d262c30">shrinkFactor</a> = 0.5;</div>
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<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  </div>
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<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  painter->save();</div>
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<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  </div>
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<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  painter->setPen( Qt::NoPen );</div>
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<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  </div>
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<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <span class="keywordflow">for</span> ( <span class="keywordtype">int</span> j = 1; j <= <a class="code" href="class_qwt_simple_compass_rose.html#a6ea00a06b07d87798e2630b489fb619e">numThornLevels</a>; j++ )</div>
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<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  {</div>
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<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  <span class="keywordtype">double</span> step = std::pow( 2.0, j ) * M_PI / <a class="code" href="class_qwt_simple_compass_rose.html#a2c4df8d87a99b4e84e077773bf60956c">numThorns</a>;</div>
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<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  <span class="keywordflow">if</span> ( step > M_PI_2 )</div>
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<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  <span class="keywordflow">break</span>;</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> r = radius;</div>
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<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  <span class="keywordflow">for</span> ( <span class="keywordtype">int</span> k = 0; k < 3; k++ )</div>
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<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  {</div>
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<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <span class="keywordflow">if</span> ( j + k < <a class="code" href="class_qwt_simple_compass_rose.html#a6ea00a06b07d87798e2630b489fb619e">numThornLevels</a> )</div>
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<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  r *= <a class="code" href="class_qwt_simple_compass_rose.html#a60278de80aa517aaa0ab7af22d262c30">shrinkFactor</a>;</div>
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<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  }</div>
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<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  </div>
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<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  <span class="keywordtype">double</span> leafWidth = r * <a class="code" href="class_qwt_simple_compass_rose.html#a3dbac7f18d6b4de2c202ddc7761d20f2">width</a>;</div>
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<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  <span class="keywordflow">if</span> ( 2.0 * M_PI / step > 32 )</div>
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<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  leafWidth = 16;</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>  <span class="keyword">const</span> <span class="keywordtype">double</span> origin = qwtRadians( north );</div>
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<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  <span class="keywordflow">for</span> ( <span class="keywordtype">double</span> angle = origin;</div>
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<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  angle < 2.0 * M_PI + origin; angle += step )</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> QPointF p = qwtPolar2Pos( center, r, angle );</div>
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<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  <span class="keyword">const</span> QPointF p1 = qwtPolar2Pos( center, leafWidth, angle + M_PI_2 );</div>
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<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  <span class="keyword">const</span> QPointF p2 = qwtPolar2Pos( center, leafWidth, angle - M_PI_2 );</div>
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<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  <span class="keyword">const</span> QPointF p3 = qwtPolar2Pos( center, r, angle + step / 2.0 );</div>
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<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="keyword">const</span> QPointF p4 = qwtPolar2Pos( center, r, angle - step / 2.0 );</div>
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<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  </div>
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<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  QPainterPath darkPath;</div>
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<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  darkPath.moveTo( center );</div>
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<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  darkPath.lineTo( p );</div>
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<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  darkPath.lineTo( qwtIntersection( center, p3, p1, p ) );</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>  painter->setBrush( <a class="code" href="class_qwt_compass_rose.html#a36888d96ff67ae500fdfdee9b68940ad">palette</a>.brush( QPalette::Dark ) );</div>
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<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  painter->drawPath( darkPath );</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>  QPainterPath lightPath;</div>
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<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  lightPath.moveTo( center );</div>
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<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  lightPath.lineTo( p );</div>
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<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  lightPath.lineTo( qwtIntersection( center, p4, p2, p ) );</div>
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<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  </div>
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<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  painter->setBrush( <a class="code" href="class_qwt_compass_rose.html#a36888d96ff67ae500fdfdee9b68940ad">palette</a>.brush( QPalette::Light ) );</div>
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<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  painter->drawPath( lightPath );</div>
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<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  }</div>
|
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<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>  painter->restore();</div>
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<div class="line"><a name="l00224"></a><span class="lineno"> 224</span> }</div>
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<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  </div>
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<div class="line"><a name="l00232"></a><span class="lineno"><a class="line" href="class_qwt_simple_compass_rose.html#a1439bd174d26b2f06baedc5fab048ed8"> 232</a></span> <span class="keywordtype">void</span> <a class="code" href="class_qwt_simple_compass_rose.html#a1439bd174d26b2f06baedc5fab048ed8">QwtSimpleCompassRose::setWidth</a>( <span class="keywordtype">double</span> width )</div>
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<div class="line"><a name="l00233"></a><span class="lineno"> 233</span> {</div>
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<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  m_data->width = <a class="code" href="class_qwt_simple_compass_rose.html#a3dbac7f18d6b4de2c202ddc7761d20f2">width</a>;</div>
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<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  <span class="keywordflow">if</span> ( m_data->width < 0.03 )</div>
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<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  m_data->width = 0.03;</div>
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<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  </div>
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<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  <span class="keywordflow">if</span> ( m_data->width > 0.4 )</div>
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<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  m_data->width = 0.4;</div>
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<div class="line"><a name="l00240"></a><span class="lineno"> 240</span> }</div>
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<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  </div>
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<div class="line"><a name="l00246"></a><span class="lineno"><a class="line" href="class_qwt_simple_compass_rose.html#a3dbac7f18d6b4de2c202ddc7761d20f2"> 246</a></span> <span class="keywordtype">double</span> <a class="code" href="class_qwt_simple_compass_rose.html#a3dbac7f18d6b4de2c202ddc7761d20f2">QwtSimpleCompassRose::width</a>()<span class="keyword"> const</span></div>
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<div class="line"><a name="l00247"></a><span class="lineno"> 247</span> <span class="keyword"></span>{</div>
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<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  <span class="keywordflow">return</span> m_data->width;</div>
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<div class="line"><a name="l00249"></a><span class="lineno"> 249</span> }</div>
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<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  </div>
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<div class="line"><a name="l00258"></a><span class="lineno"><a class="line" href="class_qwt_simple_compass_rose.html#a841918913652b50fc85ea7e713daa37a"> 258</a></span> <span class="keywordtype">void</span> <a class="code" href="class_qwt_simple_compass_rose.html#a841918913652b50fc85ea7e713daa37a">QwtSimpleCompassRose::setNumThorns</a>( <span class="keywordtype">int</span> numThorns )</div>
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<div class="line"><a name="l00259"></a><span class="lineno"> 259</span> {</div>
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<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_simple_compass_rose.html#a2c4df8d87a99b4e84e077773bf60956c">numThorns</a> < 4 )</div>
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<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  <a class="code" href="class_qwt_simple_compass_rose.html#a2c4df8d87a99b4e84e077773bf60956c">numThorns</a> = 4;</div>
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<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  </div>
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<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_simple_compass_rose.html#a2c4df8d87a99b4e84e077773bf60956c">numThorns</a> % 4 )</div>
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<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  <a class="code" href="class_qwt_simple_compass_rose.html#a2c4df8d87a99b4e84e077773bf60956c">numThorns</a> += 4 - <a class="code" href="class_qwt_simple_compass_rose.html#a2c4df8d87a99b4e84e077773bf60956c">numThorns</a> % 4;</div>
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<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  </div>
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<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  m_data->numThorns = <a class="code" href="class_qwt_simple_compass_rose.html#a2c4df8d87a99b4e84e077773bf60956c">numThorns</a>;</div>
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<div class="line"><a name="l00267"></a><span class="lineno"> 267</span> }</div>
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<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  </div>
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<div class="line"><a name="l00273"></a><span class="lineno"><a class="line" href="class_qwt_simple_compass_rose.html#a2c4df8d87a99b4e84e077773bf60956c"> 273</a></span> <span class="keywordtype">int</span> <a class="code" href="class_qwt_simple_compass_rose.html#a2c4df8d87a99b4e84e077773bf60956c">QwtSimpleCompassRose::numThorns</a>()<span class="keyword"> const</span></div>
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<div class="line"><a name="l00274"></a><span class="lineno"> 274</span> <span class="keyword"></span>{</div>
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<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  <span class="keywordflow">return</span> m_data->numThorns;</div>
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<div class="line"><a name="l00276"></a><span class="lineno"> 276</span> }</div>
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<div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  </div>
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<div class="line"><a name="l00284"></a><span class="lineno"><a class="line" href="class_qwt_simple_compass_rose.html#a45cbc152c610d096ecd4231b0f9ba549"> 284</a></span> <span class="keywordtype">void</span> <a class="code" href="class_qwt_simple_compass_rose.html#a45cbc152c610d096ecd4231b0f9ba549">QwtSimpleCompassRose::setNumThornLevels</a>( <span class="keywordtype">int</span> numThornLevels )</div>
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<div class="line"><a name="l00285"></a><span class="lineno"> 285</span> {</div>
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<div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  m_data->numThornLevels = <a class="code" href="class_qwt_simple_compass_rose.html#a6ea00a06b07d87798e2630b489fb619e">numThornLevels</a>;</div>
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<div class="line"><a name="l00287"></a><span class="lineno"> 287</span> }</div>
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<div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  </div>
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<div class="line"><a name="l00293"></a><span class="lineno"><a class="line" href="class_qwt_simple_compass_rose.html#a6ea00a06b07d87798e2630b489fb619e"> 293</a></span> <span class="keywordtype">int</span> <a class="code" href="class_qwt_simple_compass_rose.html#a6ea00a06b07d87798e2630b489fb619e">QwtSimpleCompassRose::numThornLevels</a>()<span class="keyword"> const</span></div>
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<div class="line"><a name="l00294"></a><span class="lineno"> 294</span> <span class="keyword"></span>{</div>
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<div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  <span class="keywordflow">return</span> m_data->numThornLevels;</div>
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<div class="line"><a name="l00296"></a><span class="lineno"> 296</span> }</div>
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<div class="ttc" id="aclass_qwt_compass_rose_html_a04142768b55a3bfe9c17ea6878088674"><div class="ttname"><a href="class_qwt_compass_rose.html#a04142768b55a3bfe9c17ea6878088674">QwtCompassRose::~QwtCompassRose</a></div><div class="ttdeci">virtual ~QwtCompassRose()</div><div class="ttdoc">Destructor.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__compass__rose_8cpp_source.html#l00039">qwt_compass_rose.cpp:39</a></div></div>
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<div class="ttc" id="aclass_qwt_compass_rose_html_a23bb2634090d12711102f0add67d1170"><div class="ttname"><a href="class_qwt_compass_rose.html#a23bb2634090d12711102f0add67d1170">QwtCompassRose::QwtCompassRose</a></div><div class="ttdeci">QwtCompassRose()</div><div class="ttdoc">Constructor.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__compass__rose_8cpp_source.html#l00034">qwt_compass_rose.cpp:34</a></div></div>
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<div class="ttc" id="aclass_qwt_compass_rose_html_a25f08ab6d05f4ad17b2e13395c60e7ca"><div class="ttname"><a href="class_qwt_compass_rose.html#a25f08ab6d05f4ad17b2e13395c60e7ca">QwtCompassRose::setPalette</a></div><div class="ttdeci">virtual void setPalette(const QPalette &)</div><div class="ttdoc">Assign a palette.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__compass__rose_8cpp_source.html#l00044">qwt_compass_rose.cpp:44</a></div></div>
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<div class="ttc" id="aclass_qwt_compass_rose_html_a36888d96ff67ae500fdfdee9b68940ad"><div class="ttname"><a href="class_qwt_compass_rose.html#a36888d96ff67ae500fdfdee9b68940ad">QwtCompassRose::palette</a></div><div class="ttdeci">const QPalette & palette() const</div><div class="ttdef"><b>Definition:</b> <a href="qwt__compass__rose_8cpp_source.html#l00050">qwt_compass_rose.cpp:50</a></div></div>
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<div class="ttc" id="aclass_qwt_simple_compass_rose_html_a1439bd174d26b2f06baedc5fab048ed8"><div class="ttname"><a href="class_qwt_simple_compass_rose.html#a1439bd174d26b2f06baedc5fab048ed8">QwtSimpleCompassRose::setWidth</a></div><div class="ttdeci">void setWidth(double)</div><div class="ttdef"><b>Definition:</b> <a href="qwt__compass__rose_8cpp_source.html#l00232">qwt_compass_rose.cpp:232</a></div></div>
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<div class="ttc" id="aclass_qwt_simple_compass_rose_html_a157304c9a535126d33a80df9a9dad292"><div class="ttname"><a href="class_qwt_simple_compass_rose.html#a157304c9a535126d33a80df9a9dad292">QwtSimpleCompassRose::~QwtSimpleCompassRose</a></div><div class="ttdeci">virtual ~QwtSimpleCompassRose()</div><div class="ttdoc">Destructor.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__compass__rose_8cpp_source.html#l00096">qwt_compass_rose.cpp:96</a></div></div>
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<div class="ttc" id="aclass_qwt_simple_compass_rose_html_a2c4df8d87a99b4e84e077773bf60956c"><div class="ttname"><a href="class_qwt_simple_compass_rose.html#a2c4df8d87a99b4e84e077773bf60956c">QwtSimpleCompassRose::numThorns</a></div><div class="ttdeci">int numThorns() const</div><div class="ttdef"><b>Definition:</b> <a href="qwt__compass__rose_8cpp_source.html#l00273">qwt_compass_rose.cpp:273</a></div></div>
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<div class="ttc" id="aclass_qwt_simple_compass_rose_html_a3dbac7f18d6b4de2c202ddc7761d20f2"><div class="ttname"><a href="class_qwt_simple_compass_rose.html#a3dbac7f18d6b4de2c202ddc7761d20f2">QwtSimpleCompassRose::width</a></div><div class="ttdeci">double width() const</div><div class="ttdef"><b>Definition:</b> <a href="qwt__compass__rose_8cpp_source.html#l00246">qwt_compass_rose.cpp:246</a></div></div>
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<div class="ttc" id="aclass_qwt_simple_compass_rose_html_a45cbc152c610d096ecd4231b0f9ba549"><div class="ttname"><a href="class_qwt_simple_compass_rose.html#a45cbc152c610d096ecd4231b0f9ba549">QwtSimpleCompassRose::setNumThornLevels</a></div><div class="ttdeci">void setNumThornLevels(int)</div><div class="ttdef"><b>Definition:</b> <a href="qwt__compass__rose_8cpp_source.html#l00284">qwt_compass_rose.cpp:284</a></div></div>
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<div class="ttc" id="aclass_qwt_simple_compass_rose_html_a60278de80aa517aaa0ab7af22d262c30"><div class="ttname"><a href="class_qwt_simple_compass_rose.html#a60278de80aa517aaa0ab7af22d262c30">QwtSimpleCompassRose::shrinkFactor</a></div><div class="ttdeci">double shrinkFactor() const</div><div class="ttdef"><b>Definition:</b> <a href="qwt__compass__rose_8cpp_source.html#l00117">qwt_compass_rose.cpp:117</a></div></div>
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<div class="ttc" id="aclass_qwt_simple_compass_rose_html_a66cc98efe5717eaf11fb0e713cd1aa21"><div class="ttname"><a href="class_qwt_simple_compass_rose.html#a66cc98efe5717eaf11fb0e713cd1aa21">QwtSimpleCompassRose::QwtSimpleCompassRose</a></div><div class="ttdeci">QwtSimpleCompassRose(int numThorns=8, int numThornLevels=-1)</div><div class="ttdef"><b>Definition:</b> <a href="qwt__compass__rose_8cpp_source.html#l00078">qwt_compass_rose.cpp:78</a></div></div>
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<div class="ttc" id="aclass_qwt_simple_compass_rose_html_a6ea00a06b07d87798e2630b489fb619e"><div class="ttname"><a href="class_qwt_simple_compass_rose.html#a6ea00a06b07d87798e2630b489fb619e">QwtSimpleCompassRose::numThornLevels</a></div><div class="ttdeci">int numThornLevels() const</div><div class="ttdef"><b>Definition:</b> <a href="qwt__compass__rose_8cpp_source.html#l00293">qwt_compass_rose.cpp:293</a></div></div>
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<div class="ttc" id="aclass_qwt_simple_compass_rose_html_a81ac925ddcc4ba29de333237c1cf2b6d"><div class="ttname"><a href="class_qwt_simple_compass_rose.html#a81ac925ddcc4ba29de333237c1cf2b6d">QwtSimpleCompassRose::draw</a></div><div class="ttdeci">virtual void draw(QPainter *, const QPointF &center, double radius, double north, QPalette::ColorGroup=QPalette::Active) const override</div><div class="ttdef"><b>Definition:</b> <a href="qwt__compass__rose_8cpp_source.html#l00131">qwt_compass_rose.cpp:131</a></div></div>
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<div class="ttc" id="aclass_qwt_simple_compass_rose_html_a841918913652b50fc85ea7e713daa37a"><div class="ttname"><a href="class_qwt_simple_compass_rose.html#a841918913652b50fc85ea7e713daa37a">QwtSimpleCompassRose::setNumThorns</a></div><div class="ttdeci">void setNumThorns(int)</div><div class="ttdef"><b>Definition:</b> <a href="qwt__compass__rose_8cpp_source.html#l00258">qwt_compass_rose.cpp:258</a></div></div>
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<div class="ttc" id="aclass_qwt_simple_compass_rose_html_a9dfb04bbc8f776e18c88e5e03912249d"><div class="ttname"><a href="class_qwt_simple_compass_rose.html#a9dfb04bbc8f776e18c88e5e03912249d">QwtSimpleCompassRose::drawRose</a></div><div class="ttdeci">static void drawRose(QPainter *, const QPalette &, const QPointF &center, double radius, double north, double width, int numThorns, int numThornLevels, double shrinkFactor)</div><div class="ttdef"><b>Definition:</b> <a href="qwt__compass__rose_8cpp_source.html#l00154">qwt_compass_rose.cpp:154</a></div></div>
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<div class="ttc" id="aclass_qwt_simple_compass_rose_html_afaf84e19eb8eb2360306860b02d46cfc"><div class="ttname"><a href="class_qwt_simple_compass_rose.html#afaf84e19eb8eb2360306860b02d46cfc">QwtSimpleCompassRose::setShrinkFactor</a></div><div class="ttdeci">void setShrinkFactor(double factor)</div><div class="ttdef"><b>Definition:</b> <a href="qwt__compass__rose_8cpp_source.html#l00108">qwt_compass_rose.cpp:108</a></div></div>
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