1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
|
#ifndef CONSTELLATION_DISPLAY_PLOT_C
#define CONSTELLATION_DISPLAY_PLOT_C
#include <ConstellationDisplayPlot.h>
#include <qwt_scale_draw.h>
#include <qwt_legend.h>
class ConstellationDisplayZoomer: public QwtPlotZoomer
{
public:
ConstellationDisplayZoomer(QwtPlotCanvas* canvas):QwtPlotZoomer(canvas)
{
setTrackerMode(QwtPicker::AlwaysOn);
}
virtual ~ConstellationDisplayZoomer(){
}
virtual void updateTrackerText(){
updateDisplay();
}
protected:
using QwtPlotZoomer::trackerText;
virtual QwtText trackerText( const QwtDoublePoint& p ) const
{
QwtText t(QString("(%1, %2)").arg(p.x(), 0, 'f', 4).
arg(p.y(), 0, 'f', 4));
return t;
}
};
ConstellationDisplayPlot::ConstellationDisplayPlot(QWidget* parent)
: QwtPlot(parent)
{
timespec_reset(&_lastReplot);
resize(parent->width(), parent->height());
_numPoints = 1024;
_penSize = 5;
_realDataPoints = new double[_numPoints];
_imagDataPoints = new double[_numPoints];
// Disable polygon clipping
QwtPainter::setDeviceClipping(false);
// We don't need the cache here
canvas()->setPaintAttribute(QwtPlotCanvas::PaintCached, false);
canvas()->setPaintAttribute(QwtPlotCanvas::PaintPacked, false);
QPalette palette;
palette.setColor(canvas()->backgroundRole(), QColor("white"));
canvas()->setPalette(palette);
setAxisScaleEngine(QwtPlot::xBottom, new QwtLinearScaleEngine);
set_xaxis(-2.0, 2.0);
setAxisTitle(QwtPlot::xBottom, "In-phase");
setAxisScaleEngine(QwtPlot::yLeft, new QwtLinearScaleEngine);
set_yaxis(-2.0, 2.0);
setAxisTitle(QwtPlot::yLeft, "Quadrature");
// Automatically deleted when parent is deleted
_plot_curve = new QwtPlotCurve("Constellation Points");
_plot_curve->attach(this);
_plot_curve->setPen(QPen(Qt::blue, _penSize, Qt::SolidLine, Qt::RoundCap, Qt::RoundJoin));
_plot_curve->setStyle(QwtPlotCurve::Dots);
_plot_curve->setRawData(_realDataPoints, _imagDataPoints, _numPoints);
memset(_realDataPoints, 0x0, _numPoints*sizeof(double));
memset(_imagDataPoints, 0x0, _numPoints*sizeof(double));
replot();
_zoomer = new ConstellationDisplayZoomer(canvas());
#if QT_VERSION < 0x040000
_zoomer->setMousePattern(QwtEventPattern::MouseSelect2,
Qt::RightButton, Qt::ControlModifier);
#else
_zoomer->setMousePattern(QwtEventPattern::MouseSelect2,
Qt::RightButton, Qt::ControlModifier);
#endif
_zoomer->setMousePattern(QwtEventPattern::MouseSelect3,
Qt::RightButton);
_panner = new QwtPlotPanner(canvas());
_panner->setAxisEnabled(QwtPlot::yRight, false);
_panner->setMouseButton(Qt::MidButton);
// Avoid jumping when labels with more/less digits
// appear/disappear when scrolling vertically
const QFontMetrics fm(axisWidget(QwtPlot::yLeft)->font());
QwtScaleDraw *sd = axisScaleDraw(QwtPlot::yLeft);
sd->setMinimumExtent( fm.width("100.00") );
const QColor c(Qt::darkRed);
_zoomer->setRubberBandPen(c);
_zoomer->setTrackerPen(c);
connect(this, SIGNAL( legendChecked(QwtPlotItem *, bool ) ),
this, SLOT( LegendEntryChecked(QwtPlotItem *, bool ) ));
}
ConstellationDisplayPlot::~ConstellationDisplayPlot()
{
delete[] _realDataPoints;
delete[] _imagDataPoints;
// _fft_plot_curves deleted when parent deleted
// _zoomer and _panner deleted when parent deleted
}
void
ConstellationDisplayPlot::set_pen_size(int size)
{
if(size > 0 && size < 30){
_penSize = size;
_plot_curve->setPen(QPen(Qt::blue, _penSize, Qt::SolidLine, Qt::RoundCap, Qt::RoundJoin));
}
}
void
ConstellationDisplayPlot::set_xaxis(double min, double max)
{
setAxisScale(QwtPlot::xBottom, min, max);
}
void
ConstellationDisplayPlot::set_yaxis(double min, double max)
{
setAxisScale(QwtPlot::yLeft, min, max);
}
void
ConstellationDisplayPlot::set_axis(double xmin, double xmax,
double ymin, double ymax)
{
set_xaxis(xmin, xmax);
set_yaxis(ymin, ymax);
}
void ConstellationDisplayPlot::replot()
{
QwtPlot::replot();
}
void
ConstellationDisplayPlot::resizeSlot( QSize *s )
{
resize(s->width(), s->height());
}
void ConstellationDisplayPlot::PlotNewData(const double* realDataPoints,
const double* imagDataPoints,
const int64_t numDataPoints,
const double timeInterval)
{
if((numDataPoints > 0) &&
(diff_timespec(get_highres_clock(), _lastReplot) > timeInterval)) {
if(numDataPoints != _numPoints){
_numPoints = numDataPoints;
delete[] _realDataPoints;
delete[] _imagDataPoints;
_realDataPoints = new double[_numPoints];
_imagDataPoints = new double[_numPoints];
_plot_curve->setRawData(_realDataPoints, _imagDataPoints, _numPoints);
}
memcpy(_realDataPoints, realDataPoints, numDataPoints*sizeof(double));
memcpy(_imagDataPoints, imagDataPoints, numDataPoints*sizeof(double));
replot();
_lastReplot = get_highres_clock();
}
}
void
ConstellationDisplayPlot::LegendEntryChecked(QwtPlotItem* plotItem, bool on)
{
plotItem->setVisible(!on);
}
#endif /* CONSTELLATION_DISPLAY_PLOT_C */
|
