1 |
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2 | /* -------------------------------------------------------------------------
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3 | * BKG NTRIP Client
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4 | * -------------------------------------------------------------------------
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5 | *
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6 | * Class: t_polarPlot
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7 | *
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8 | * Purpose: Polar Plot
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9 | *
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10 | * Author: L. Mervart
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11 | *
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12 | * Created: 23-Jun-2012
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13 | *
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14 | * Changes:
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15 | *
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16 | * -----------------------------------------------------------------------*/
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17 |
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18 | #include <qpen.h>
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19 | #include <qwt_series_data.h>
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20 | #include <qwt_symbol.h>
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21 | #include <qwt_legend.h>
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22 | #include <qwt_polar_grid.h>
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23 | #include <qwt_polar_curve.h>
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24 | #include <qwt_polar_marker.h>
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25 | #include <qwt_scale_engine.h>
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26 |
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27 | #include "polarplot.h"
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28 |
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29 | const QwtInterval zenithInterval(0.0, 90.0);
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30 | const QwtInterval azimuthInterval(0.0, 360.0);
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31 |
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32 | // Data Class
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33 | ////////////////////////////////////////////////////////////////////////////
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34 | class Data: public QwtSeriesData<QwtPointPolar> {
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35 | public:
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36 | Data(const QwtInterval &zenithInterval,
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37 | const QwtInterval &azimuthInterval, size_t size) :
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38 | _zenithInterval(zenithInterval), _azimuthInterval(azimuthInterval),
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39 | _size(size) {}
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40 |
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41 | virtual size_t size() const {return _size;}
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42 |
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43 | protected:
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44 | QwtInterval _zenithInterval;
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45 | QwtInterval _azimuthInterval;
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46 | size_t _size;
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47 | };
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48 |
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49 | // Spiral Data Class
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50 | ////////////////////////////////////////////////////////////////////////////
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51 | class SpiralData: public Data {
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52 | public:
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53 | SpiralData(const QwtInterval &zenithInterval,
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54 | const QwtInterval &azimuthInterval, size_t size) :
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55 | Data(zenithInterval, azimuthInterval, size) {}
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56 |
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57 | virtual QwtPointPolar sample(size_t ii) const {
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58 | const double stepA = 4 * _azimuthInterval.width() / _size;
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59 | const double aa = _azimuthInterval.minValue() + ii * stepA;
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60 |
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61 | const double stepR = _zenithInterval.width() / _size;
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62 | const double rr = _zenithInterval.minValue() + ii * stepR;
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63 |
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64 | return QwtPointPolar(aa, rr);
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65 | }
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66 |
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67 | virtual QRectF boundingRect() const {
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68 | if (d_boundingRect.width() < 0.0) {
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69 | d_boundingRect = qwtBoundingRect(*this);
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70 | }
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71 | return d_boundingRect;
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72 | }
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73 | };
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74 |
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75 | // Constructor
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76 | ////////////////////////////////////////////////////////////////////////////
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77 | t_polarPlot::t_polarPlot( QWidget *parent ) :
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78 | QwtPolarPlot(QwtText("Polar Plot"), parent) {
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79 |
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80 | setPlotBackground(Qt::white);
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81 |
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82 | // Scales
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83 | // ------
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84 | setScale(QwtPolar::Radius,
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85 | zenithInterval.minValue(), zenithInterval.maxValue());
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86 |
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87 | setScale(QwtPolar::Azimuth,
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88 | azimuthInterval.minValue(), azimuthInterval.maxValue(),
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89 | azimuthInterval.width() / 12);
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90 |
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91 | // Grids, Axes
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92 | // -----------
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93 | _grid = new QwtPolarGrid();
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94 | _grid->setPen(QPen(Qt::black));
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95 | for ( int scaleId = 0; scaleId < QwtPolar::ScaleCount; scaleId++ ) {
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96 | _grid->showGrid(scaleId);
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97 | }
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98 |
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99 | _grid->setAxisPen(QwtPolar::AxisAzimuth, QPen(Qt::black));
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100 |
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101 | _grid->showAxis(QwtPolar::AxisAzimuth, true);
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102 | _grid->showAxis(QwtPolar::AxisTop, true);
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103 | _grid->showAxis(QwtPolar::AxisBottom, false);
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104 | _grid->showAxis(QwtPolar::AxisLeft, false);
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105 | _grid->showAxis(QwtPolar::AxisRight, false);
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106 |
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107 | _grid->showGrid(QwtPolar::Azimuth, true);
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108 | _grid->showGrid(QwtPolar::Radius, true);
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109 |
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110 | _grid->attach( this );
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111 |
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112 | // Curves
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113 | // ------
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114 | QwtPolarCurve* curve = createCurve();
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115 | curve->attach(this);
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116 | _curves << curve;
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117 |
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118 | // Legend
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119 | // ------
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120 | QwtLegend *legend = new QwtLegend;
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121 | insertLegend(legend, QwtPolarPlot::BottomLegend);
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122 | }
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123 |
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124 | // Destructor
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125 | ////////////////////////////////////////////////////////////////////////////
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126 | t_polarPlot::~t_polarPlot() {
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127 | }
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128 |
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129 | //
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130 | ////////////////////////////////////////////////////////////////////////////
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131 | QwtPolarCurve* t_polarPlot::createCurve() const {
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132 | const int numPoints = 200;
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133 | QwtPolarCurve* curve = new QwtPolarCurve();
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134 | curve->setStyle(QwtPolarCurve::NoCurve); // draw only symbols
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135 | curve->setSymbol(new QwtSymbol(QwtSymbol::Ellipse,
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136 | QBrush(Qt::red), QPen(Qt::red),
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137 | QSize(3, 3)));
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138 | curve->setData(new SpiralData(zenithInterval, azimuthInterval, numPoints));
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139 | return curve;
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140 | }
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