public override void Plot(Graphics graphics, Rectangle bounds, double min, double max)
{
base.Plot(graphics, bounds, min, max); // We call base Plot() method to paint defined Plots
if (_bandAreaColorUp == Color.Transparent && _bandAreaColorDown == Color.Transparent || _opacity == 0)
{
return; // if bandArea colors are transparent or opacity is 0 returning to avoid unnecessary calculations
}
SolidBrush upBrush = new SolidBrush(Color.FromArgb(_opacity, _bandAreaColorUp));
SolidBrush downBrush = new SolidBrush(Color.FromArgb(_opacity, _bandAreaColorDown));
List <Point> points = new List <Point>();
int lastX = -1;
double lastValueFast = -1;
double lastValueSlow = -1;
SolidBrush brush = null;
for (int idx = FirstBarIndexPainted; idx <= LastBarIndexPainted; idx++)
{
if (idx - Displacement < 0 || idx - Displacement >= BarsArray[0].Count || (!ChartControl.ShowBarsRequired && idx - Displacement < BarsRequired))
{
continue;
}
bool fastHasValue = FastMA.IsValidPlot(idx) && FastMA.Get(idx) > 0;
bool slowHasValue = SlowMA.IsValidPlot(idx) && SlowMA.Get(idx) > 0;
if (!slowHasValue || !fastHasValue) //if we don't have valid values for BOTH moving averages then skip the loop step
{
continue;
}
double valueFast = FastMA.Get(idx);
double valueSlow = SlowMA.Get(idx);
int x = ChartControl.GetXByBarIdx(BarsArray[0], idx);
if (lastX >= 0)
{
int yf0 = ChartControl.GetYByValue(this, lastValueFast);
int yf1 = ChartControl.GetYByValue(this, valueFast);
int ys0 = ChartControl.GetYByValue(this, lastValueSlow);
int ys1 = ChartControl.GetYByValue(this, valueSlow);
if (ys0 != yf0)
{
brush = ys0 < yf0 ? downBrush : upBrush;
}
if (Math.Sign(yf1 - ys1) != 0 && Math.Sign(yf0 - ys0) != Math.Sign(yf1 - ys1) || points.Count == 0) // We have a cross or only start painting
{
if (points.Count > 0 && brush != null) //
{
SmoothingMode oldSmoothingMode = graphics.SmoothingMode;
graphics.SmoothingMode = SmoothingMode.AntiAlias;
graphics.FillPolygon(brush, points.ToArray());
graphics.SmoothingMode = oldSmoothingMode;
}
points.Clear();
points.Add(new Point(lastX, yf0));
points.Add(new Point(x, yf1));
points.Add(new Point(x, ys1));
points.Add(new Point(lastX, ys0));
points.Add(new Point(lastX, yf0));
}
else
{
int pos = points.Count / 2;
points.Insert(pos, new Point(x, ys1));
points.Insert(pos, new Point(x, yf1));
}
}
// save as previous point
lastX = x;
lastValueFast = valueFast;
lastValueSlow = valueSlow;
}
if (points.Count > 0 && brush != null)
{
SmoothingMode oldSmoothingMode = graphics.SmoothingMode;
graphics.SmoothingMode = SmoothingMode.AntiAlias;
graphics.FillPolygon(brush, points.ToArray());
graphics.SmoothingMode = oldSmoothingMode;
points.Clear();
}
}
protected override void OnBarUpdate()
{
double f;
double s;
if (CurrentBar <= Math.Max(FastAverage, SlowAverage))
{
return;
}
switch (FastAverageType)
{
case MovingAverageType.EMA:
f = EMA(_fastInput, FastAverage)[0];
break;
case MovingAverageType.SMA:
f = SMA(_fastInput, FastAverage)[0];
break;
case MovingAverageType.TMA:
f = TMA(_fastInput, FastAverage)[0];
break;
case MovingAverageType.WMA:
f = WMA(_fastInput, FastAverage)[0];
break;
case MovingAverageType.VWMA:
f = VWMA(_fastInput, FastAverage)[0];
break;
default:
f = HMA(_fastInput, FastAverage)[0];
break;
}
FastMA.Set(f);
switch (SlowAverageType)
{
case MovingAverageType.EMA:
s = EMA(_slowInput, SlowAverage)[0];
break;
case MovingAverageType.SMA:
s = SMA(_slowInput, SlowAverage)[0];
break;
case MovingAverageType.TMA:
s = TMA(_slowInput, SlowAverage)[0];
break;
case MovingAverageType.WMA:
s = WMA(_slowInput, SlowAverage)[0];
break;
case MovingAverageType.VWMA:
s = VWMA(_slowInput, SlowAverage)[0];
break;
default:
s = HMA(_slowInput, SlowAverage)[0];
break;
}
SlowMA.Set(s);
if (High[0] < SlowMA[0] &&
High[0] < FastMA[0])
{
if (Math.Min(SlowMA[0], FastMA[0]) - High[0] > pipsOffset)
{
trendDataSeries[0] = -1.1;
}
else
if (trendDataSeries.ContainsValue(1))
{
trendDataSeries[0] = trendDataSeries[1];
}
}
else if (Low[0] > SlowMA[0] &&
Low[0] > FastMA[0])
{
if (Low[0] - Math.Max(SlowMA[0], FastMA[0]) > pipsOffset)
{
trendDataSeries[0] = 1.1;
}
else
if (trendDataSeries.ContainsValue(1))
{
trendDataSeries[0] = trendDataSeries[1];
}
}
else
{
if (trendDataSeries.ContainsValue(1))
{
trendDataSeries[0] = trendDataSeries[1];
}
}
if (trendDataSeries.ContainsValue(0))
{
//plot
if (trendDataSeries[0] > 1)
{
DrawDiamond(CurrentBar + "dot", false, 0, High[0] + 25 * TickSize, Color.Green);
}
else if (trendDataSeries[0] < -1)
{
DrawDiamond(CurrentBar + "dot", false, 0, Low[0] - 25 * TickSize, Color.Red);
}
}
}