private IInteractiveLine GetInteractiveLine(IGraphPane pane, IReadOnlyList <IDataBar> bars)
{
var minDate = bars.First().Date;
var maxDate = bars.Last().Date;
var interactiveLine = (IInteractiveLine)pane.GetInteractiveObject(VariableId);
var intColor = ColorParser.Parse(Color);
var firstMarketPosition = new MarketPoint(FirstDateTime.Value, FirstValue.Value);
var secondMarketPosition = new MarketPoint(SecondDateTime.Value, SecondValue.Value);
if (interactiveLine != null)
{
interactiveLine.ExecutionDataBars = bars;
CorrectMarketPointsEx(ref firstMarketPosition, ref secondMarketPosition, minDate, maxDate);
if (interactiveLine.PaneSides == PaneSide && interactiveLine.Color == intColor && interactiveLine.Mode == Mode)
{
pane.AddUnremovableInteractiveObjectId(VariableId);
interactiveLine.Thickness = Thickness;
interactiveLine.FirstPoint.MarketPosition = firstMarketPosition;
interactiveLine.SecondPoint.MarketPosition = secondMarketPosition;
return(m_interactiveLine = interactiveLine);
}
pane.RemoveInteractiveObject(VariableId);
}
else
{
CorrectMarketPointsEx(ref firstMarketPosition, ref secondMarketPosition, minDate, maxDate);
}
m_interactiveLine = pane.AddInteractiveLine(VariableId, PaneSide, false, intColor, Mode, firstMarketPosition, secondMarketPosition);
m_interactiveLine.Thickness = Thickness;
m_interactiveLine.ExecutionDataBars = bars;
return(m_interactiveLine);
}
private IList <double> GetLine(IGraphPane pane, IReadOnlyList <IDataBar> bars)
{
m_interactiveLine = null;
if (bars == null || bars.Count == 0)
{
return(EmptyArrays.Double);
}
if (bars.Count == 1)
{
return(s_defaultResult1);
}
var interactiveLine = GetInteractiveLine(pane, bars);
var firstPosition = interactiveLine.FirstPoint.MarketPosition;
var secondPosition = interactiveLine.SecondPoint.MarketPosition;
if (firstPosition.X == secondPosition.X)
{
return(new ConstList(double.NaN, bars.Count));
}
var firstBarIndex = GetBarIndex(bars, firstPosition.X);
var secondBarIndex = GetBarIndex(bars, secondPosition.X);
if (firstBarIndex == null || secondBarIndex == null || firstBarIndex == secondBarIndex)
{
return(new ConstList(double.NaN, bars.Count));
}
var a = (secondPosition.Y - firstPosition.Y) / (secondBarIndex.Value - firstBarIndex.Value);
var b = firstPosition.Y - a * firstBarIndex.Value;
int minIndex;
int maxIndex;
switch (Mode)
{
case InteractiveLineMode.Finite:
if (firstBarIndex < secondBarIndex)
{
minIndex = firstBarIndex.Value;
maxIndex = secondBarIndex.Value;
}
else
{
minIndex = secondBarIndex.Value;
maxIndex = firstBarIndex.Value;
}
break;
case InteractiveLineMode.Infinite:
minIndex = 0;
maxIndex = bars.Count - 1;
break;
case InteractiveLineMode.Ray:
if (firstBarIndex < secondBarIndex)
{
minIndex = firstBarIndex.Value;
maxIndex = bars.Count - 1;
}
else
{
minIndex = 0;
maxIndex = firstBarIndex.Value;
}
break;
default:
throw new InvalidOperationException();
}
return(a == 0 ? (IList <double>) new ConstList(b, bars.Count, minIndex, maxIndex) : new LineList(a, b, bars.Count, minIndex, maxIndex));
}