1 #ifndef CONSTELLATION_DISPLAY_PLOT_C
2 #define CONSTELLATION_DISPLAY_PLOT_C
4 #include <ConstellationDisplayPlot.h>
6 #include <qwt_scale_draw.h>
7 #include <qwt_legend.h>
10 class ConstellationDisplayZoomer: public QwtPlotZoomer
13 ConstellationDisplayZoomer(QwtPlotCanvas* canvas):QwtPlotZoomer(canvas)
15 setTrackerMode(QwtPicker::AlwaysOn);
18 virtual ~ConstellationDisplayZoomer(){
22 virtual void updateTrackerText(){
27 virtual QwtText trackerText( const QwtDoublePoint& p ) const
29 QwtText t(QString("Sample %1, %2 V").arg(p.x(), 0, 'f', 0).arg(p.y(), 0, 'f', 4));
35 ConstellationDisplayPlot::ConstellationDisplayPlot(QWidget* parent):QwtPlot(parent){
36 timespec_reset(&_lastReplot);
38 resize(parent->width(), parent->height());
40 _displayIntervalTime = (1.0/10.0); // 1/10 of a second between updates
43 _realDataPoints = new double[_numPoints];
44 _imagDataPoints = new double[_numPoints];
46 // Disable polygon clipping
47 QwtPainter::setDeviceClipping(false);
49 // We don't need the cache here
50 canvas()->setPaintAttribute(QwtPlotCanvas::PaintCached, false);
51 canvas()->setPaintAttribute(QwtPlotCanvas::PaintPacked, false);
54 palette.setColor(canvas()->backgroundRole(), QColor("white"));
55 canvas()->setPalette(palette);
57 setAxisScaleEngine(QwtPlot::xBottom, new QwtLinearScaleEngine);
58 //setAxisScale(QwtPlot::xBottom, -1.0, 1.0);
60 setAxisTitle(QwtPlot::xBottom, "In-phase");
62 setAxisScaleEngine(QwtPlot::yLeft, new QwtLinearScaleEngine);
63 //setAxisScale(QwtPlot::yLeft, -1.0, 1.0);
65 setAxisTitle(QwtPlot::yLeft, "Quadrature");
67 // Automatically deleted when parent is deleted
68 _plot_curve = new QwtPlotCurve("Constellation Points");
69 _plot_curve->attach(this);
70 _plot_curve->setPen(QPen(Qt::blue, 5, Qt::SolidLine, Qt::RoundCap, Qt::RoundJoin));
71 _plot_curve->setStyle(QwtPlotCurve::Dots);
72 _plot_curve->setRawData(_realDataPoints, _imagDataPoints, _numPoints);
74 memset(_realDataPoints, 0x0, _numPoints*sizeof(double));
75 memset(_imagDataPoints, 0x0, _numPoints*sizeof(double));
79 _zoomer = new ConstellationDisplayZoomer(canvas());
80 #if QT_VERSION < 0x040000
81 _zoomer->setMousePattern(QwtEventPattern::MouseSelect2,
82 Qt::RightButton, Qt::ControlModifier);
84 _zoomer->setMousePattern(QwtEventPattern::MouseSelect2,
85 Qt::RightButton, Qt::ControlModifier);
87 _zoomer->setMousePattern(QwtEventPattern::MouseSelect3,
90 _panner = new QwtPlotPanner(canvas());
91 _panner->setAxisEnabled(QwtPlot::yRight, false);
92 _panner->setMouseButton(Qt::MidButton);
94 // Avoid jumping when labels with more/less digits
95 // appear/disappear when scrolling vertically
97 const QFontMetrics fm(axisWidget(QwtPlot::yLeft)->font());
98 QwtScaleDraw *sd = axisScaleDraw(QwtPlot::yLeft);
99 sd->setMinimumExtent( fm.width("100.00") );
101 const QColor c(Qt::darkRed);
102 _zoomer->setRubberBandPen(c);
103 _zoomer->setTrackerPen(c);
105 connect(this, SIGNAL( legendChecked(QwtPlotItem *, bool ) ),
106 this, SLOT( LegendEntryChecked(QwtPlotItem *, bool ) ));
109 ConstellationDisplayPlot::~ConstellationDisplayPlot(){
110 delete[] _realDataPoints;
111 delete[] _imagDataPoints;
113 // _fft_plot_curves deleted when parent deleted
114 // _zoomer and _panner deleted when parent deleted
118 ConstellationDisplayPlot::set_xaxis(double min, double max)
120 setAxisScale(QwtPlot::xBottom, min, max);
124 ConstellationDisplayPlot::set_yaxis(double min, double max)
126 setAxisScale(QwtPlot::yLeft, min, max);
130 ConstellationDisplayPlot::set_axis(double xmin, double xmax,
131 double ymin, double ymax)
133 set_xaxis(xmin, xmax);
134 set_yaxis(ymin, ymax);
137 void ConstellationDisplayPlot::replot(){
139 const timespec startTime = get_highres_clock();
143 double differenceTime = (diff_timespec(get_highres_clock(), startTime));
145 differenceTime *= 99.0;
146 // Require at least a 10% duty cycle
147 if(differenceTime > (1.0/10.0)){
148 _displayIntervalTime = differenceTime;
152 void ConstellationDisplayPlot::PlotNewData(const double* realDataPoints, const double* imagDataPoints, const int64_t numDataPoints){
153 if(numDataPoints > 0){
155 if(numDataPoints != _numPoints){
156 _numPoints = numDataPoints;
158 delete[] _realDataPoints;
159 delete[] _imagDataPoints;
160 _realDataPoints = new double[_numPoints];
161 _imagDataPoints = new double[_numPoints];
163 _plot_curve->setRawData(_realDataPoints, _imagDataPoints, _numPoints);
165 memcpy(_realDataPoints, realDataPoints, numDataPoints*sizeof(double));
166 memcpy(_imagDataPoints, imagDataPoints, numDataPoints*sizeof(double));
170 // Allow at least a 50% duty cycle
171 if(diff_timespec(get_highres_clock(), _lastReplot) > _displayIntervalTime){
172 // Only replot the screen if it is visible
176 _lastReplot = get_highres_clock();
180 void ConstellationDisplayPlot::LegendEntryChecked(QwtPlotItem* plotItem, bool on){
181 plotItem->setVisible(!on);
184 #endif /* CONSTELLATION_DISPLAY_PLOT_C */