public static double GetBarsNumber(this ChartRectangle rectangle, Bars bars, Symbol symbol)
{
var startX = rectangle.GetStartTime();
var endX = rectangle.GetEndTime();
var startBarIndex = bars.GetBarIndex(startX, symbol);
var endBarIndex = bars.GetBarIndex(endX, symbol);
return(Math.Round(endBarIndex - startBarIndex, 2));
}
private void DrawOrUpdateHorizontalLines(ChartRectangle rectangle, ChartTrendLine[] horizontalLines)
{
var startTime = rectangle.GetStartTime();
var endTime = rectangle.GetEndTime();
var verticalDelta = rectangle.GetPriceDelta();
var lineLevels = new double[]
{
verticalDelta * 0.2,
verticalDelta * 0.4,
verticalDelta * 0.6,
verticalDelta * 0.8,
};
for (int i = 0; i < lineLevels.Length; i++)
{
var level = rectangle.Y2 > rectangle.Y1 ? rectangle.Y1 + lineLevels[i] : rectangle.Y1 - lineLevels[i];
var horizontalLine = horizontalLines[i];
if (horizontalLine == null)
{
var objectName = GetObjectName(string.Format("HorizontalLine{0}", i + 1));
horizontalLines[i] = Chart.DrawTrendLine(objectName, startTime, level, endTime, level, _settings.PriceLevelsColor, _settings.PriceLevelsThickness, _settings.PriceLevelsStyle);
horizontalLines[i].IsInteractive = true;
horizontalLines[i].IsLocked = true;
}
else
{
horizontalLine.Time1 = startTime;
horizontalLine.Time2 = endTime;
horizontalLine.Y1 = level;
horizontalLine.Y2 = level;
}
}
}
public static TimeSpan GetTimeDelta(this ChartRectangle rectangle)
{
return(rectangle.GetEndTime() - rectangle.GetStartTime());
}
public static double GetStartBarIndex(this ChartRectangle rectangle, Bars bars, Symbol symbol)
{
return(bars.GetBarIndex(rectangle.GetStartTime(), symbol));
}
private void UpdateFans(ChartRectangle rectangle, ChartTrendLine[] fans)
{
var startTime = rectangle.GetStartTime();
var endTime = rectangle.GetEndTime();
var topPrice = rectangle.GetTopPrice();
var bottomPrice = rectangle.GetBottomPrice();
var rectanglePriceDelta = rectangle.GetPriceDelta();
var rectangleBarsNumber = rectangle.GetBarsNumber(Chart.Bars, Chart.Symbol);
var startBarIndex = rectangle.GetStartBarIndex(Chart.Bars, Chart.Symbol);
foreach (var fan in fans)
{
var fanName = fan.Name.Split('.').Last();
fan.Time1 = startTime;
fan.Y1 = bottomPrice;
switch (fanName)
{
case "1x1":
fan.Time2 = endTime;
fan.Y2 = topPrice;
break;
case "1x2":
case "1x3":
case "1x4":
case "1x5":
case "1x8":
{
fan.Y2 = topPrice;
switch (fanName)
{
case "1x2":
fan.Time2 = Chart.Bars.GetOpenTime(startBarIndex + (rectangleBarsNumber / 2), Chart.Symbol);
break;
case "1x3":
fan.Time2 = Chart.Bars.GetOpenTime(startBarIndex + (rectangleBarsNumber / 3), Chart.Symbol);
break;
case "1x4":
fan.Time2 = Chart.Bars.GetOpenTime(startBarIndex + (rectangleBarsNumber / 4), Chart.Symbol);
break;
case "1x5":
fan.Time2 = Chart.Bars.GetOpenTime(startBarIndex + (rectangleBarsNumber / 5), Chart.Symbol);
break;
case "1x8":
fan.Time2 = Chart.Bars.GetOpenTime(startBarIndex + (rectangleBarsNumber / 8), Chart.Symbol);
break;
}
break;
}
case "2x1":
case "3x1":
case "4x1":
case "5x1":
case "8x1":
{
fan.Time2 = endTime;
switch (fanName)
{
case "2x1":
fan.Y2 = bottomPrice + (rectanglePriceDelta / 2);
break;
case "3x1":
fan.Y2 = bottomPrice + (rectanglePriceDelta / 3);
break;
case "4x1":
fan.Y2 = bottomPrice + (rectanglePriceDelta / 4);
break;
case "5x1":
fan.Y2 = bottomPrice + (rectanglePriceDelta / 5);
break;
case "8x1":
fan.Y2 = bottomPrice + (rectanglePriceDelta / 8);
break;
}
break;
}
default:
throw new ArgumentOutOfRangeException("level", "The fan name is outside valid range");
}
}
}
private void DrawLabels(ChartRectangle rectangle, long id)
{
DrawLabelText(Math.Round(rectangle.GetPriceDelta(), Chart.Symbol.Digits).ToNonScientificString(), rectangle.GetStartTime(), rectangle.GetTopPrice(), id, objectNameKey: "Price", fontSize: 10);
DrawLabelText(rectangle.GetBarsNumber(Chart.Bars, Chart.Symbol).ToString(), rectangle.GetEndTime(), rectangle.GetBottomPrice(), id, objectNameKey: "BarsNumber", fontSize: 10);
DrawLabelText(rectangle.GetPriceToBarsRatio(Chart.Bars, Chart.Symbol).ToNonScientificString(), rectangle.GetEndTime(), rectangle.GetTopPrice(), id, objectNameKey: "PriceToBarsRatio", fontSize: 10);
}
private void DrawFans(ChartRectangle rectangle)
{
var startTime = rectangle.GetStartTime();
var endTime = rectangle.GetEndTime();
var topPrice = rectangle.GetTopPrice();
var bottomPrice = rectangle.GetBottomPrice();
var rectanglePriceDelta = rectangle.GetPriceDelta();
var rectangleBarsNumber = rectangle.GetBarsNumber(Chart.Bars, Chart.Symbol);
var startBarIndex = rectangle.GetStartBarIndex(Chart.Bars, Chart.Symbol);
var levels = new[] { 1, 2, 3, 4, 5, 8, -2, -3, -4, -5, -8 };
foreach (var level in levels)
{
string name = null;
DateTime secondTime = endTime;
double secondPrice = topPrice;
switch (level)
{
case 1:
name = "1x1";
secondTime = endTime;
secondPrice = topPrice;
break;
case 2:
case 3:
case 4:
case 5:
case 8:
{
name = string.Format("1x{0}", level);
secondPrice = topPrice;
switch (level)
{
case 2:
secondTime = Chart.Bars.GetOpenTime(startBarIndex + (rectangleBarsNumber / 2), Chart.Symbol);
break;
case 3:
secondTime = Chart.Bars.GetOpenTime(startBarIndex + (rectangleBarsNumber / 3), Chart.Symbol);
break;
case 4:
secondTime = Chart.Bars.GetOpenTime(startBarIndex + (rectangleBarsNumber / 4), Chart.Symbol);
break;
case 5:
secondTime = Chart.Bars.GetOpenTime(startBarIndex + (rectangleBarsNumber / 5), Chart.Symbol);
break;
case 8:
secondTime = Chart.Bars.GetOpenTime(startBarIndex + (rectangleBarsNumber / 8), Chart.Symbol);
break;
}
break;
}
case -2:
case -3:
case -4:
case -5:
case -8:
{
name = string.Format("{0}x1", Math.Abs(level));
secondTime = endTime;
switch (level)
{
case -2:
secondPrice = bottomPrice + (rectanglePriceDelta / 2);
break;
case -3:
secondPrice = bottomPrice + (rectanglePriceDelta / 3);
break;
case -4:
secondPrice = bottomPrice + (rectanglePriceDelta / 4);
break;
case -5:
secondPrice = bottomPrice + (rectanglePriceDelta / 5);
break;
case -8:
secondPrice = bottomPrice + (rectanglePriceDelta / 8);
break;
}
break;
}
default:
throw new ArgumentOutOfRangeException("level", "The fan level is outside valid range");
}
if (string.IsNullOrWhiteSpace(name))
{
continue;
}
var objectName = GetObjectName(string.Format("Fan.{0}", name));
var trendLine = Chart.DrawTrendLine(objectName, startTime, bottomPrice, secondTime, secondPrice, _settings.FansColor, _settings.FansThickness, _settings.FansStyle);
trendLine.IsInteractive = true;
trendLine.IsLocked = true;
_fans[name] = trendLine;
}
}