public MainViewModel()
{
StartTime = DateTime.Now;
CurrentTime = StartTime;
DispatcherTimer timer = new DispatcherTimer();
timer.Interval = TimeSpan.FromMilliseconds(1000);
timer.Tick += (sender, args) =>
{
if (Finish)
{
return;
}
CurrentTime = DateTime.Now;
var count = CorrectInputKeyboardSymbolModels.Count;
if (count < 2)
{
return;
}
for (int i = count - 1; i >= 0; i--)
{
var span = CorrectInputKeyboardSymbolModels[count - 1].Time - CorrectInputKeyboardSymbolModels[i].Time;
if (span.TotalMilliseconds > 5000)
{
SpeedData.Add(new DataPoint(TimeSpanAxis.ToDouble(CurrentTime - StartTime), (count - 1 - i) / span.TotalMinutes));
while (SpeedData.Count > 60)
{
SpeedData.RemoveAt(0);
}
break;
}
}
};
timer.Start();
}