protected void nChartControl2_AsyncCustomCommand(object sender, EventArgs e)
{
NCallbackCustomCommandArgs args = e as NCallbackCustomCommandArgs;
switch (args.Command.Name)
{
case "displayDataWindow":
double dataWindowWidth = double.Parse(args.Command.Arguments["width"] as string);
NCartesianChart zoomChart = nChartControl2.Charts[0] as NCartesianChart;
NSmoothLineSeries zoomLine = zoomChart.Series[0] as NSmoothLineSeries;
NCartesianChart previewChart = nChartControl1.Charts[0] as NCartesianChart;
NAxis previewXAxis = previewChart.Axis(StandardAxis.PrimaryX);
NPointF ptViewPoint = new NPointF(float.Parse(args.Command.Arguments["x"] as string), 0);
NVector2DD vecScalePoint = new NVector2DD();
using (NChartRasterView view = new NChartRasterView(nChartControl1.Document, nChartControl1.Dimensions, NResolution.ScreenResolution))
{
view.RecalcLayout();
NViewToScale2DTransformation viewToScale = new NViewToScale2DTransformation(
view.Context,
previewChart,
(int)StandardAxis.PrimaryX,
(int)StandardAxis.PrimaryY
);
if (viewToScale.Transform(ptViewPoint, ref vecScalePoint))
{
double rangeMin = vecScalePoint.X - dataWindowWidth / 2;
rangeMin = previewXAxis.Scale.ViewRange.GetValueInRange(rangeMin);
double rangeMax = rangeMin + dataWindowWidth;
rangeMax = previewXAxis.Scale.ViewRange.GetValueInRange(rangeMax);
rangeMin = rangeMax - dataWindowWidth;
// reinitialize data points
zoomLine.XValues.Clear();
zoomLine.Values.Clear();
for (int i = (int)rangeMin; i <= (int)rangeMax; i++)
{
zoomLine.XValues.Add(i);
zoomLine.Values.Add(waveData[i]);
}
}
}
break;
}
}
void UpdateDataWindow(string webControlId, System.Web.HttpContext context, NStateObject state, NPointF ptViewPoint)
{
NChartSessionStateObject chartState = state as NChartSessionStateObject;
NRootPanel rootPanel = chartState.Document.RootPanel;
NCartesianChart chart = rootPanel.Charts[0] as NCartesianChart;
NVector2DD vecScalePoint = new NVector2DD();
NAxis xAxis = chart.Axis(StandardAxis.PrimaryX);
NAxis yAxis = chart.Axis(StandardAxis.PrimaryY);
using (NChartRasterView view = new NChartRasterView(chartState.Document, chartState.Size, NResolution.ScreenResolution))
{
view.RecalcLayout();
NViewToScale2DTransformation viewToScale = new NViewToScale2DTransformation(
view.Context,
chart,
(int)StandardAxis.PrimaryX,
(int)StandardAxis.PrimaryY
);
if (viewToScale.Transform(ptViewPoint, ref vecScalePoint))
{
double rangeMin = vecScalePoint.X - DataWindowWidth / 2;
rangeMin = xAxis.Scale.ViewRange.GetValueInRange(rangeMin);
double rangeMax = rangeMin + DataWindowWidth;
rangeMax = xAxis.Scale.ViewRange.GetValueInRange(rangeMax);
rangeMin = rangeMax - DataWindowWidth;
NRangeSelection selection = chart.RangeSelections[0] as NRangeSelection;
selection.HorizontalAxisRange = new NRange1DD(rangeMin, rangeMax);
selection.VerticalAxisRange = new NRange1DD(-waveDataWave1Factor, waveDataWave1Factor);
}
}
}