public void Initialize(double samplingFrequency, string title, XAxisScrollMode scrollMode = XAxisScrollMode.None)
{
SampleFrequency = samplingFrequency;
ContainerChart.BeginUpdate();
ContainerChart.Title.Text = title;
ContainerChart.ViewXY.SampleDataSeries[0].Clear();
ContainerChart.ViewXY.SampleDataSeries[0].SamplingFrequency = 1;
ContainerChart.ViewXY.ZoomPanOptions.MouseWheelZooming = MouseWheelZooming.Off;
ContainerChart.ViewXY.ZoomPanOptions.LeftMouseButtonAction = MouseButtonAction.None;
ContainerChart.ViewXY.ZoomPanOptions.RightMouseButtonAction = MouseButtonAction.None;
_xAxis.Minimum = -SampleFrequency / 2;
_xAxis.Maximum = SampleFrequency / 2;
_xAxis.ScrollMode = scrollMode;
_xAxis.ScrollPosition = _xAxis.Minimum;
_xAxis.Position = _xAxis.Minimum;
_xAxis.Title.Text = string.Format("{0} s", SampleFrequency.ToString("0.000"));
ContainerChart.ViewXY.SampleDataSeries[0].FirstSampleTimeStamp = _xAxis.Minimum;
ContainerChart.ViewXY.DropOldSeriesData = true;
var samples = new double[(int)SampleFrequency];
FeedData(samples);
ContainerChart.EndUpdate();
}
public void FeedData(double[] samples)
{
if (samples == null)
{
return;
}
ContainerChart.BeginUpdate();
var half = SampleFrequency / 2;
var skip = half - half * _zoomFactor;
var take = SampleFrequency * _zoomFactor;
var selected = samples.Skip((int)skip).Take((int)take).ToArray();
ContainerChart.ViewXY.SampleDataSeries[0].SamplesDouble = selected;
ContainerChart.EndUpdate();
}
internal void Zoom(double factor)
{
if (_zoomFactor == 1.0 && factor > 1.0)
{
return;
}
if (_zoomFactor == 0.0625 && factor < 1.0)
{
return;
}
_zoomFactor *= factor;
ContainerChart.BeginUpdate();
_xAxis.SetRange(_xAxis.Minimum * factor, _xAxis.Maximum * factor);
_xAxis.ScrollPosition = _xAxis.Minimum;
_xAxis.Position = _xAxis.Minimum;
//var defaultMin = -SampleFrequency/2;
ContainerChart.ViewXY.SampleDataSeries[0].FirstSampleTimeStamp = _xAxis.Minimum;
ContainerChart.EndUpdate();
}
public void Stop()
{
ContainerChart.BeginUpdate();
ContainerChart.EndUpdate();
}