private protected override double GetDistance(Point P)
{
var P1 = Point1.ToPoint(Chart);
var P2 = Point2.ToPoint(Chart);
double A = P1.DistanceTo(P2);
double B = P.DistanceTo(P2);
double C = P.DistanceTo(P1);
double pp = (A + B + C) / 2;
return((2 * Math.Sqrt(pp * (pp - A) * (pp - B) * (pp - C))) / A);
}
private protected override void ChangeMethod(Vector?Changes)
{
if (Changes.HasValue)
{
NP1 = Point1.ToPoint(Chart) + Changes.Value;
NP2 = Point2.ToPoint(Chart) + Changes.Value;
}
else
{
NP1 = Point1.ToPoint(Chart);
NP2 = Point2.ToPoint(Chart);
}
}
private protected override List <Hook> CreateSubhooks()
{
return(new List <Hook>
{
new Hook
(
this,
P => P.DistanceTo(Point1.ToPoint(Chart)),
P => Point1.ToPoint(Chart),
() => 14,
V =>
{
if (V.HasValue)
{
NP1 = Point1.ToPoint(Chart) + V.Value;
}
else
{
NP1 = Point1.ToPoint(Chart);
}
NP2 = Point2.ToPoint(Chart);
},
DrawElement,
DrawShadow,
AcceptNewCoordinates
),
new Hook
(
this,
P => P.DistanceTo(Point2.ToPoint(Chart)),
P => Point2.ToPoint(Chart),
() => 14,
V =>
{
if (V.HasValue)
{
NP2 = Point2.ToPoint(Chart) + V.Value;
}
else
{
NP2 = Point2.ToPoint(Chart);
}
NP1 = Point1.ToPoint(Chart);
},
DrawElement,
DrawShadow,
AcceptNewCoordinates
)
});
}
private protected override Point GetHookPoint(Point P)
{
var P1 = Point1.ToPoint(Chart);
var P2 = Point2.ToPoint(Chart);
double A = P1.DistanceTo(P2);
double B = P.DistanceTo(P2);
double C = P.DistanceTo(P1);
double pp = (A + B + C) / 2;
double h = (2 * Math.Sqrt(pp * (pp - A) * (pp - B) * (pp - C))) / A;
double z = Math.Sqrt(Math.Pow(C, 2) - Math.Pow(h, 2));
P1.GetCoeffsAB(P2, out double a, out _);
double x = z / Math.Sqrt(Math.Pow(a, 2) + 1);
return(new Point(P1.X + x, P1.Y + a * x));
}
private protected override void DrawShadow(DrawingVisual ElementsVisual, DrawingVisual PricesVisual, DrawingVisual TimesVisual)
{
var br = Dispatcher.Invoke(() => { return(Chart.ChartBackground); });
var P1 = Point1.ToPoint(Chart);
var P2 = Point2.ToPoint(Chart);
P1.GetCoeffsAB(P2, out double A, out double B);
var linpen = new Pen(br, this.LineThikness + 1); linpen.Freeze();
var linps = new List <Point>();
if (LineIndent == 0)
{
linps.Add(new Point(0, B));
linps.Add(new Point(Chart.ChWidth, A * Chart.ChWidth + B));
}
else
{
double z = 0, x = 0;
double len = Math.Sqrt(Math.Pow(Chart.ChWidth, 2) + Math.Pow(B - A * Chart.ChWidth + B, 2));
double dx1 = LineDash / Math.Sqrt(A + 1);
double dx2 = LineIndent / Math.Sqrt(A + 1);
while (z < len)
{
linps.Add(new Point(x, A * x + B)); z += LineDash; x += dx1;
linps.Add(new Point(x, A * x + B)); z += LineIndent; x += dx2;
}
}
Dispatcher.Invoke(() =>
{
using var dc = ElementsVisual.RenderOpen();
for (int i = 0; i < linps.Count; i += 2)
{
dc.DrawLine(linpen, linps[i], linps[i + 1]);
}
dc.DrawEllipse(Brushes.Black, null, P1, 10, 10);
dc.DrawEllipse(Brushes.Black, null, P2, 10, 10);
});
}
public override Action <DrawingContext>[] PrepareToDrawing(Vector?vec, double PixelsPerDip, bool DrawOver = false)
{
Point P1, P2;
if (vec.HasValue)
{
P1 = NP1;
P2 = NP2;
}
else
{
P1 = Point1.ToPoint(Chart);
P2 = Point2.ToPoint(Chart);
}
P1.GetCoeffsAB(P2, out double A, out double B);
var linpen = new Pen(this.LineBrush, this.LineThikness + 1); linpen.Freeze();
var linps = new List <Point>();
if (LineIndent == 0)
{
linps.Add(new Point(0, B));
linps.Add(new Point(Chart.ChWidth, A * Chart.ChWidth + B));
}
else
{
double z = 0, x = 0;
double len = Math.Sqrt(Math.Pow(Chart.ChWidth, 2) + Math.Pow(B - A * Chart.ChWidth + B, 2));
double dx1 = LineDash / Math.Sqrt(A + 1);
double dx2 = LineIndent / Math.Sqrt(A + 1);
while (z < len)
{
linps.Add(new Point(x, A * x + B)); z += LineDash; x += dx1;
linps.Add(new Point(x, A * x + B)); z += LineIndent; x += dx2;
}
}
Action <DrawingContext> drawing;
if (DrawOver)
{
drawing = dc =>
{
for (int i = 0; i < linps.Count; i += 2)
{
dc.DrawLine(linpen, linps[i], linps[i + 1]);
}
dc.DrawEllipse(Brushes.Black, null, P1, 14, 14);
dc.DrawEllipse(Brushes.White, null, P1, 12, 12);
dc.DrawEllipse(Brushes.Black, null, P1, 10, 10);
dc.DrawEllipse(Brushes.Black, null, P2, 14, 14);
dc.DrawEllipse(Brushes.White, null, P2, 12, 12);
dc.DrawEllipse(Brushes.Black, null, P2, 10, 10);
};
}
else
{
drawing = dc =>
{
for (int i = 0; i < linps.Count; i += 2)
{
dc.DrawLine(linpen, linps[i], linps[i + 1]);
}
};
}
return(new Action <DrawingContext>[]
{
drawing,
null,
null
});
}