public MainViewModel()
{
var dummyDataProvider = new DummyDataProvider();
var lineData = new XyDataSeries <double, double>()
{
SeriesName = "TestingSeries"
};
_renderableSeries = new ObservableCollection <IRenderableSeriesViewModel>();
RenderableSeries.Add(new LineRenderableSeriesViewModel()
{
StrokeThickness = 2,
Stroke = Colors.SteelBlue,
DataSeries = lineData,
StyleKey = "LineSeriesStyle"
});
// Append the initial values to the chart
var initialDataValues = dummyDataProvider.GetHistoricalData();
lineData.Append(initialDataValues.XValues, initialDataValues.YValues);
// Subscribe to future updates
dummyDataProvider.SubscribeUpdates((newValues) =>
{
// Append when new values arrive
lineData.Append(newValues.XValues, newValues.YValues);
// Zoom the chart to fit
lineData.InvalidateParentSurface(RangeMode.ZoomToFit);
});
}
private void SetSeries(string seriesType)
{
RenderableSeries.Clear();
if (seriesType.Equals("Column Series"))
{
RenderableSeries.Add(_columnSeries);
}
else if (seriesType.Equals("Impulse Series"))
{
RenderableSeries.Add(_impulseSeries);
}
else if (seriesType.Equals("Mountain Series"))
{
RenderableSeries.Add(_mountainSeries);
}
else if (seriesType.Equals("PointLine Series"))
{
RenderableSeries.Add(_pointLineSeries);
}
else if (seriesType.Equals("SurfaceMesh Series"))
{
RenderableSeries.Add(_surfaceMeshSeries);
}
// Temporary
//else if (seriesType.Equals("Waterfall Series"))
//{
// RenderableSeries.Add(_waterfallSeries);
//}
else if (seriesType.Equals("Scatter Series"))
{
RenderableSeries.Add(_scatterSeries);
}
}
private void SeriesUpdate()
{
if (RenderableSeries != null)
{
RenderableSeries.Clear();
RenderableSeries.Add(new ColumnRenderableSeriesViewModel()
{
DataPointWidth = 1,
Stroke = System.Windows.Media.Color.FromRgb(186, 187, 190),
DataSeries = Series
});
}
if (Data != null && Series != null)
{
XList.Clear();
YList.Clear();
XList = Data.Keys.ToList();
YList = Data.Values.ToList();
try
{
Series.Clear();
Series.InsertRange(0, XList, YList);
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
}
}
private void CreateChartSeries()
{
// Create a RenderableSeries. Apply the DataSeries created before
_renderableSeries = new ObservableCollection <IRenderableSeriesViewModel>();
RenderableSeries.Add(new LineRenderableSeriesViewModel()
{
StrokeThickness = 2,
Stroke = Colors.SteelBlue,
DataSeries = _lineData,
StyleKey = "LineSeriesStyle"
});
}
private void InitializeRenderableSeries()
{
var renderableSeries = new LineRenderableSeriesViewModel
{
Stroke = Colors.Blue,
StrokeThickness = 2,
PointMarker = new EllipsePointMarker()
};
var dataSeries = new XyDataSeries <double>();
for (int i = 0; i < 11; ++i)
{
dataSeries.Append(i, i - 3);
}
renderableSeries.DataSeries = dataSeries;
RenderableSeries.Add(renderableSeries);
}
public MainViewModel()
{
var lineData = new XyDataSeries <double, double>()
{
SeriesName = "TestingSeries"
};
lineData.Append(0, 0);
lineData.Append(1, 1);
lineData.Append(2, 2);
_renderableSeries = new ObservableCollection <IRenderableSeriesViewModel>();
RenderableSeries.Add(new LineRenderableSeriesViewModel()
{
StrokeThickness = 2,
Stroke = Colors.SteelBlue,
DataSeries = lineData,
});
}
public override HitTestInfo HitTest(Point rawPoint, double hitTestRadius, bool interpolate = false)
{
var nearestBaseHitResult = base.HitTest(rawPoint, hitTestRadius, interpolate);
// No spline? Fine - return base implementation
if (!RenderableSeries.IsSplineEnabled || RenderableSeries._splineSeries == null || RenderableSeries.CurrentRenderPassData == null)
{
return(nearestBaseHitResult);
}
var nearestHitResult = new HitTestInfo();
// Get the coordinateCalculators. See 'Converting Pixel Coordinates to Data Coordinates' documentation for coordinate transforms
var xCalc = RenderableSeries.CurrentRenderPassData.XCoordinateCalculator;
// Compute the X,Y data value at the mouse location
var xDataPointAtMouse = xCalc.GetDataValue(RenderableSeries.CurrentRenderPassData.IsVerticalChart ? rawPoint.Y : rawPoint.X);
// Find the index in the spline interpolated data that is nearest to the X-Data point at mouse
// NOTE: This assumes the data is sorted in ascending direction and a binary search would be faster ...
int foundIndex = RenderableSeries.FindIndex(RenderableSeries._splineSeries, xDataPointAtMouse);
if (foundIndex != -1)
{
nearestHitResult.IsWithinDataBounds = true;
// Find the nearest data point to the mouse
var xDataPointNearest = RenderableSeries._splineSeries[foundIndex].X;
var yDataPointNearest = RenderableSeries._splineSeries[foundIndex].Y;
nearestHitResult.XValue = xDataPointNearest;
nearestHitResult.YValue = yDataPointNearest;
// Compute the X,Y coordinates (pixel coords) of the nearest data point to the mouse
nearestHitResult.HitTestPoint = nearestHitResult.HitTestPoint = RenderableSeries.GetCoordinatesFor(xDataPointNearest, yDataPointNearest);
// Determine if mouse-location is within 7.07 pixels of the nearest data point
var distance = Math.Pow(rawPoint.X - nearestHitResult.HitTestPoint.X, 2) +
Math.Pow(rawPoint.Y - nearestHitResult.HitTestPoint.Y, 2);
distance = Math.Sqrt(distance);
var baseDistance = Math.Pow(rawPoint.X - nearestBaseHitResult.HitTestPoint.X, 2) +
Math.Pow(rawPoint.Y - nearestBaseHitResult.HitTestPoint.Y, 2);
baseDistance = Math.Sqrt(baseDistance);
nearestHitResult.IsHit = distance <= DefaultHitTestRadius || baseDistance <= DefaultHitTestRadius;
nearestHitResult.IsVerticalHit = true;
nearestHitResult.DataSeriesIndex = nearestBaseHitResult.DataSeriesIndex;
if (RenderableSeries.DataSeries.HasMetadata)
{
nearestHitResult.Metadata = RenderableSeries.DataSeries.Metadata[nearestHitResult.DataSeriesIndex];
}
// Returning a HitTestResult with IsHit = true / IsVerticalHit signifies to the Rollovermodifier & TooltipModifier to show a tooltip at this location
return(nearestHitResult);
}
else
{
// Returning HitTestInfo.Empty signifies to the RolloverModifier & TooltipModifier there is nothing to show here
return(HitTestInfo.Empty);
}
}
