resize(parent->width(), parent->height());
- _displayIntervalTime = (1.0/10.0); // 1/10 of a second between updates
-
_useCenterFrequencyFlag = false;
_numPoints = 1024;
void
FrequencyDisplayPlot::replot()
{
- const timespec startTime = get_highres_clock();
-
_markerNoiseFloorAmplitude->setYValue(_noiseFloorAmplitude);
// Make sure to take into account the start frequency
_markerPeakAmplitude->setYValue(_peakAmplitude);
QwtPlot::replot();
-
- double differenceTime = (diff_timespec(get_highres_clock(), startTime));
-
- differenceTime *= 99.0;
- // Require at least a 10% duty cycle
- if(differenceTime > (1.0/10.0)){
- _displayIntervalTime = differenceTime;
- }
}
void
void
FrequencyDisplayPlot::PlotNewData(const double* dataPoints, const int64_t numDataPoints,
const double noiseFloorAmplitude, const double peakFrequency,
- const double peakAmplitude)
+ const double peakAmplitude, const double timeInterval)
{
- if(numDataPoints > 0){
-
- if(numDataPoints != _numPoints){
+ // Only update plot if there is data and if the time interval has elapsed
+ if((numDataPoints > 0) &&
+ (diff_timespec(get_highres_clock(), _lastReplot) > timeInterval)) {
+
+ if(numDataPoints != _numPoints) {
_numPoints = numDataPoints;
-
+
delete[] _dataPoints;
delete[] _minFFTPoints;
delete[] _maxFFTPoints;
_fft_plot_curve->setRawData(_xAxisPoints, _dataPoints, _numPoints);
_min_fft_plot_curve->setRawData(_xAxisPoints, _minFFTPoints, _numPoints);
_max_fft_plot_curve->setRawData(_xAxisPoints, _maxFFTPoints, _numPoints);
-
+
_resetXAxisPoints();
ClearMaxData();
ClearMinData();
}
-
+
memcpy(_dataPoints, dataPoints, numDataPoints*sizeof(double));
for(int64_t point = 0; point < numDataPoints; point++){
if(dataPoints[point] < _minFFTPoints[point]){
_peakAmplitude = peakAmplitude;
SetUpperIntensityLevel(_peakAmplitude);
- }
- // Allow at least a 50% duty cycle
- if(diff_timespec(get_highres_clock(), _lastReplot) > _displayIntervalTime){
- // Only replot the screen if it is visible
- if(isVisible()){
- replot();
- }
+ replot();
+
_lastReplot = get_highres_clock();
}
}