private void DrawRegion(BarRegion r, Graphics g, RectangleD worldRect, Rectangle canvasRect)
{
double x1 = r.IndexStart.HasValue ? r.IndexStart.Value :
r.Start.HasValue ? Chart.CandleRange.GetXCoord(r.Start.Value)
: worldRect.Left;
double x2 = r.IndexEnd.HasValue ? r.IndexEnd.Value :
r.End.HasValue ? Chart.CandleRange.GetXCoord(r.End.Value)
: worldRect.Right;
if (x2 == x2)
{
x1 -= singleBarRegionWidth;
x2 += singleBarRegionWidth;
}
double y1 = r.UpperBound.HasValue ? r.UpperBound.Value : worldRect.Bottom;
double y2 = r.LowerBound.HasValue ? r.LowerBound.Value : worldRect.Top;
PointD p1 = Conversion.WorldToScreen(new PointD(x1, y1), worldRect, canvasRect);
PointD p2 = Conversion.WorldToScreen(new PointD(x2, y2), worldRect, canvasRect);
if (!DrawAsFrame)
{
var color = CustomAlphaChannel ? r.Color : Color.FromArgb(regionAlpha, r.Color);
using (var brush = new SolidBrush(color))
{
g.FillRectangle(brush, (float)p1.X, (float)p1.Y, (float)p2.X - (float)p1.X,
(float)p2.Y - (float)p1.Y);
}
}
else
{
using (var pen = r.MakePen())
{
g.DrawRectangle(pen, (float)p1.X, (float)p1.Y, (float)p2.X - (float)p1.X,
(float)p2.Y - (float)p1.Y);
}
}
}
public void BuildSeries(ChartControl chart)
{
seriesRSI.Data.Clear();
seriesBound.data.Clear();
// границы
var reg = new BarRegion { Color = Color.Black, UpperBound = 100 - marginPercent, LowerBound = marginPercent };
seriesBound.data.Add(reg);
// RSI
for (var i = 0; i < Period; i++)
seriesRSI.Data.Add(50);
var dataCount = GetSourceDataCount();
for (var i = Period; i < dataCount; i++)
{
double sumU = 0, sumD = 0;
for (var j = 0; j < Period; j++)
{
var delta = GetSourcePrice(i - j)
- GetSourcePrice(i - j - 1);
if (delta < 0) sumD -= delta;
else sumU += delta;
}
double RSI;
if (sumU == sumD && sumU == 0) RSI = 50;
else if (sumD == 0) RSI = 100;
else
RSI = 100 - 100.0 / (1 + sumU / sumD);
seriesRSI.Data.Add(RSI);
}
}
private void DrawRegion(BarRegion r, Graphics g, RectangleD worldRect, Rectangle canvasRect)
{
double x1 = r.IndexStart.HasValue ? r.IndexStart.Value :
r.Start.HasValue ? Chart.CandleRange.GetXCoord(r.Start.Value)
: worldRect.Left;
double x2 = r.IndexEnd.HasValue ? r.IndexEnd.Value :
r.End.HasValue ? Chart.CandleRange.GetXCoord(r.End.Value)
: worldRect.Right;
if (x2 == x2)
{
x1 -= singleBarRegionWidth;
x2 += singleBarRegionWidth;
}
double y1 = r.UpperBound.HasValue ? r.UpperBound.Value : worldRect.Bottom;
double y2 = r.LowerBound.HasValue ? r.LowerBound.Value : worldRect.Top;
PointD p1 = Conversion.WorldToScreen(new PointD(x1, y1), worldRect, canvasRect);
PointD p2 = Conversion.WorldToScreen(new PointD(x2, y2), worldRect, canvasRect);
if (!DrawAsFrame)
{
var color = CustomAlphaChannel ? r.Color : Color.FromArgb(regionAlpha, r.Color);
using (var brush = new SolidBrush(color))
{
g.FillRectangle(brush, (float) p1.X, (float) p1.Y, (float) p2.X - (float) p1.X,
(float) p2.Y - (float) p1.Y);
}
}
else
{
using (var pen = r.MakePen())
{
g.DrawRectangle(pen, (float)p1.X, (float)p1.Y, (float)p2.X - (float)p1.X,
(float)p2.Y - (float)p1.Y);
}
}
}
