private void DrawHeartBeat(double xDelta, int xCount, double hDelta, int hCount, Chart chart)
{
double f0 = Double.Parse(tbA12.Text);
double alpha = Double.Parse(tbB12.Text);
double spikes = Double.Parse(tbSpikes12.Text);
chart.Series.Clear();
Series series = chart.Series.Add("f(x)");
series.ChartType = SeriesChartType.Spline;
double[] h = new double[hCount];
double[] x = new double[xCount];
Func <double, double> hFun = (t => Math.Sin(2 * Math.PI * f0 * t) * Math.Exp(-alpha * t));
double dt = hDelta;
for (int i = 0; i < h.Length; i++)
{
h[i] = hFun(i * dt);
}
for (int i = (int)(x.Length / spikes); i < x.Length; i = i + (int)(x.Length / spikes))
{
x[i] = 110 + rnd.Next(0, 20);
}
double[] res = Transformations.ConvolutionFunction(h, x);
for (int i = 0; i < res.Length; i++)
{
if (!Double.IsInfinity(res[i]) && !Double.IsNaN(res[i]))
{
series.Points.AddXY(i, res[i] + 1);
}
}
}