private void FftCalculated(object sender, FftEventArgs e)
{
if (_lines == 0)
{
return;
}
lock (SpectrumData)
{
int x;
var b0 = 0;
SpectrumData.Clear();
for (x = 0; x < _lines; x++)
{
float peak = 0;
var b1 = (int)Math.Pow(2, x * 10.0 / (_lines - 1));
if (b1 > 2047)
{
b1 = 2047;
}
if (b1 <= b0)
{
b1 = b0 + 1;
}
for (; b0 < b1; b0++)
{
if (peak < e.Result[1 + b0].X)
{
peak = e.Result[1 + b0].X;
}
}
var y = (int)(Math.Sqrt(peak) * 3 * 255 - 4);
if (y > 255)
{
y = 255;
}
if (y < 0)
{
y = 0;
}
SpectrumData.Add((byte)y);
}
}
}
