private void InitializeBuffer(WaterfallConfig config)
{
_width = config.Points / config.DownSample;
_height = config.History * config.RefreshRate;
_invalidateArea = new Int32Rect(0, 0, _width, _height);
_blockSize = (uint)((_height * _width) - _width);
_buffer = new WriteableBitmap(_width, _height, 300, 300, PixelFormats.Gray8, BitmapPalettes.Gray256);
Spectrum.Source = _buffer;
}
public void Begin(WaterfallConfig config)
{
InitializeBuffer(config);
InitializeSampler(config);
UpdateTimeLabel(config.History);
UpdateFrequencyLabel(1, 0.5);
UpdateLegendLabel(config);
_initialized = true;
}
private void InitializeSampler(WaterfallConfig config)
{
_frequencyDomain = config.MaxFrequency - config.MinFrequency;
_windowStop = config.MaxFrequency;
_windowStart = config.MinFrequency;
_updateTimer = new Stopwatch();
_updateThreshold = 1000 / config.RefreshRate;
_downSample = config.DownSample;
_transform = new Transform(config.MinIntensity, config.MaxIntensity, 0, 255);
_updateTimer.Start();
}
private void UpdateLegendLabel(WaterfallConfig config)
{
LegendMin.Content = config.MinIntensity;
LegendMax.Content = config.MaxIntensity;
}