private void DrawFourLine(GearedValues <ObservablePoint> schart, GearedValues <ObservablePoint> sundata)
{
double needSelectData = Math.Round((sundata.Select(x => x.Y).Max() + sundata.Select(x => x.Y).Min()) / 2, 3);
ObservablePoint[] twopoint = new ObservablePoint[4];
double[] tempD = sundata.Select(x => Math.Round(x.Y, 3)).ToArray();
for (int i = 1; i < 6000; i++)
{
if ((tempD[i - 1] >= needSelectData && tempD[i] <= needSelectData) || (tempD[i] >= needSelectData && tempD[i - 1] <= needSelectData))
{
twopoint[0] = sundata[i];
break;
}
}
for (int i = 5999; i > 1; i--)
{
if ((tempD[i - 1] >= needSelectData && tempD[i] <= needSelectData) || (tempD[i] >= needSelectData && tempD[i - 1] <= needSelectData))
{
twopoint[3] = sundata[i];
break;
}
}
double cuttime = cutTake * 0.05;
double skiptime = cutSkip * 0.05;
//绘制t1
Hover1.X1 = (twopoint[0].X - skiptime) / cuttime * chartCore.Width + chartCore.Left + 5;
Hover1.X2 = (twopoint[0].X - skiptime) / cuttime * chartCore.Width + chartCore.Left + 5;
t1.Text = "t₁";
Canvas.SetLeft(t1, Hover1.X1 - 5);
Canvas.SetBottom(t1, 5);
Hover4.X1 = (twopoint[3].X - skiptime) / cuttime * chartCore.Width + chartCore.Left + 5;
Hover4.X2 = (twopoint[3].X - skiptime) / cuttime * chartCore.Width + chartCore.Left + 5;
t4.Text = "t₄";
Canvas.SetLeft(t4, Hover4.X1 - 5);
Canvas.SetBottom(t4, 5);
int oneStart = (int)((twopoint[0].X) / 300 * sumChart.Count());
int fourStart = (int)((twopoint[3].X) / 300 * sumChart.Count());
var centerPoints = schart.Skip(oneStart + (fourStart - oneStart) / 4).Take((fourStart - oneStart) / 2);
int startI = oneStart + (fourStart - oneStart) / 4;
var centerValue = (centerPoints.Select(x => x.Y).Max() + centerPoints.Select(x => x.Y).Min()) / 2;
double[] centDoble = centerPoints.Select(x => Math.Round(x.Y, 3)).ToArray();
for (int i = 1; i < centDoble.Length; i++)
{
if ((centDoble[i - 1] >= centerValue && centDoble[i] <= centerValue) || (centDoble[i] >= centerValue && centDoble[i - 1] <= centerValue))
{
twopoint[1] = sundata[i + startI];
break;
}
}
for (int i = centDoble.Length - 1; i > 1; i--)
{
if ((centDoble[i - 1] >= centerValue && centDoble[i] <= centerValue) || (centDoble[i] >= centerValue && centDoble[i - 1] <= centerValue))
{
twopoint[2] = sundata[i + startI];
break;
}
}
Hover2.X1 = (twopoint[1].X - skiptime) / cuttime * chartCore.Width + chartCore.Left + 5;
Hover2.X2 = (twopoint[1].X - skiptime) / cuttime * chartCore.Width + chartCore.Left + 5;
t2.Text = "t₂";
Canvas.SetLeft(t2, Hover2.X1 - 5);
Canvas.SetBottom(t2, 5);
Hover3.X1 = (twopoint[2].X - skiptime) / cuttime * chartCore.Width + chartCore.Left + 5;
Hover3.X2 = (twopoint[2].X - skiptime) / cuttime * chartCore.Width + chartCore.Left + 5;
t3.Text = "t₃";
Canvas.SetLeft(t3, Hover3.X1 - 5);
Canvas.SetBottom(t3, 5);
initLine();
getResult(twopoint, sundata);
}