private void ToogleZoomingMode(object sender, RoutedEventArgs e)
{
switch (ZoomingMode)
{
case ZoomingOptions.None:
ZoomingMode = ZoomingOptions.X;
break;
case ZoomingOptions.X:
ZoomingMode = ZoomingOptions.Y;
break;
case ZoomingOptions.Y:
ZoomingMode = ZoomingOptions.Xy;
break;
case ZoomingOptions.Xy:
ZoomingMode = ZoomingOptions.None;
break;
default:
throw new ArgumentOutOfRangeException();
}
}
private void XyOnClick(object sender, RoutedEventArgs e)
{
ZoomingMode = ZoomingOptions.XY;
}
private void YOnClick(object sender, RoutedEventArgs e)
{
ZoomingMode = ZoomingOptions.Y;
}
private void ToogleZoomingMode(object sender, RoutedEventArgs e)
{
switch (ZoomingMode)
{
case ZoomingOptions.None:
ZoomingMode = ZoomingOptions.X;
break;
case ZoomingOptions.X:
ZoomingMode = ZoomingOptions.Y;
break;
case ZoomingOptions.Y:
ZoomingMode = ZoomingOptions.Xy;
break;
case ZoomingOptions.Xy:
ZoomingMode = ZoomingOptions.None;
break;
default:
throw new ArgumentOutOfRangeException();
}
}
public SeriesViewModel()
{
this.SeriesCollection = new SeriesCollection();
this.YFormatter = value => value.ToString("f");
this.ZoomingMode = ZoomingOptions.X;
}
private async void UpdateData_Click(object sender, RoutedEventArgs e)
{
ChartValues <DateTimePoint> _values = await GetData();
// calc high point
double VQ = 9.10; // VTI volatility, %
int count = _values.Count;
var array_high = new DateTimePoint[count];
var array_mid_warning = new DateTimePoint[count];
var array_low = new DateTimePoint[count];
var high_point = _values[0].Value;
array_high[0] = new DateTimePoint(_values[0].DateTime, high_point);
array_mid_warning[0] = new DateTimePoint(_values[0].DateTime, high_point * (1 - VQ / 100 / 2));
array_low[0] = new DateTimePoint(_values[0].DateTime, high_point * (1 - VQ / 100));
for (var i = 1; i <= count - 1; i++)
{
if (_values[i].Value >= high_point)
{
high_point = _values[i].Value;
}
else if (high_point * (1 - VQ / 100) >= _values[i].Value) // later time price is lower than the previous price ... _values[i + 1].Value < _values[i].Value
{
high_point = _values[i].Value;
}
array_high[i] = new DateTimePoint(_values[i].DateTime, high_point);
array_mid_warning[i] = new DateTimePoint(_values[i].DateTime, high_point * (1 - VQ / 100 / 2));
array_low[i] = new DateTimePoint(_values[i].DateTime, high_point * (1 - VQ / 100));
}
var values_high = new ChartValues <DateTimePoint>();
var values_mid = new ChartValues <DateTimePoint>();
var values_low = new ChartValues <DateTimePoint>();
values_high.AddRange(array_high);
values_mid.AddRange(array_mid_warning);
values_low.AddRange(array_low);
SeriesCollection = new SeriesCollection
{
new LineSeries
{
Title = "Highest Price",
Values = values_high,
Fill = Brushes.Green,
Stroke = Brushes.Green,
LineSmoothness = 0,
StrokeThickness = 1,
PointGeometrySize = 0
},
new LineSeries
{
Title = "Mid Price (Warning)",
Values = values_mid,
Fill = Brushes.Yellow,
Stroke = Brushes.Yellow,
LineSmoothness = 0,
StrokeThickness = 1,
PointGeometrySize = 0
},
new LineSeries
{
Title = "Trailing Stop",
Values = values_low,
//Fill = Brushes.Red,
Stroke = Brushes.Red,
LineSmoothness = 0,
StrokeThickness = 1,
PointGeometrySize = 0
},
new LineSeries
{
Title = "close price",
Values = _values,
//Fill = Brushes.Yellow,
Stroke = Brushes.White,
LineSmoothness = 0,
StrokeThickness = 3,
PointGeometrySize = 0,
},
};
ZoomingMode = ZoomingOptions.X;
XFormatter = val => new DateTime((long)val).ToString("yy-MM-dd");
YFormatter = val => val.ToString("C");
DataContext = this;
}