Adding a constellation plot and an example for viewing constellations of digital modulations.

git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@10537 221aa14e-8319-0410-a670-987f0aec2ac5

1 files changed, 49 insertions, 0 deletions

diff --git a/gr-qtgui/src/lib/ConstellationDisplayPlot.h b/gr-qtgui/src/lib/ConstellationDisplayPlot.h
new file mode 100644
index 000000000..d7604ea84
--- /dev/null
+++ b/gr-qtgui/src/lib/ConstellationDisplayPlot.h
@@ -0,0 +1,49 @@
+#ifndef CONSTELLATION_DISPLAY_PLOT_HPP
+#define CONSTELLATION_DISPLAY_PLOT_HPP
+
+#include <qwt_plot.h>
+#include <qwt_painter.h>
+#include <qwt_plot_canvas.h>
+#include <qwt_plot_curve.h>
+#include <qwt_scale_engine.h>
+#include <qwt_scale_widget.h>
+#include <qwt_plot_zoomer.h>
+#include <qwt_plot_panner.h>
+#include <qwt_plot_marker.h>
+#include <highResTimeFunctions.h>
+#include <qwt_symbol.h>
+
+class ConstellationDisplayPlot:public QwtPlot{
+  Q_OBJECT
+
+public:
+  ConstellationDisplayPlot(QWidget*);
+  virtual ~ConstellationDisplayPlot();
+
+  void PlotNewData(const double* realDataPoints, const double* imagDataPoints, 
+		   const int64_t numDataPoints);
+    
+  virtual void replot();
+
+protected slots:
+  void LegendEntryChecked(QwtPlotItem *plotItem, bool on);
+
+protected:
+
+private:
+  QwtPlotCurve* _plot_curve;
+
+  QwtPlotPanner* _panner;
+  QwtPlotZoomer* _zoomer;
+  
+  double* _realDataPoints;
+  double* _imagDataPoints;
+
+  timespec _lastReplot;
+
+  int64_t _numPoints;
+
+  double _displayIntervalTime;
+};
+
+#endif /* CONSTELLATION_DISPLAY_PLOT_HPP */