public static void Mandelbrot(PlotControl plot)
{
// Here we add the Mandelbrot set to the plot.
Function2DItem m = new Function2DItem(
// The source represents the body of the following function:
// double[] p, dfdp;
// double f(double x, double y) {
// ...
// }
@"
double xn = 0, yn = 0, x2 = 0, y2 = 0;
for (int n = 0; n < 500; n++) {
yn = 2*xn*yn + y;
xn = x2 - y2 + x;
x2 = xn*xn; y2 = yn*yn;
if (x2 + y2 > 4) return n;
}
return -1;
" );
plot.Model.FixXtoY = true; // We fix the x-plotrange to the y-plotrange, so the
// proportions of the plot will be correct.
plot.SetRange(plot.x0, plot.x1, plot.y0, plot.y1, 0, 20);
// We set the view range of the plot, so the Mandelbrot set will be
// fully visible. We set the z-plotrange from 0 to 20.
plot.Model.Add(m);
}
public static void WAV(PlotControl plot)
{
DataItem data = new DataItem();
data.Lines = true; // join data points with a line
data.Marks = false; // draw no error marks
data.Color = Color.Green;
data.Dimensions = 2; // use x and y columns of the DataItem
data.ErrorColumns = false; // WAV data contains no error info
try {
// Load WAV data
data.LoadWAV("test.wav");
} catch (Exception ex) {
MessageBox.Show("Could not open the file test.wav\n" + ex.Message);
}
plot.SetRange(0, 1, -1, 1);
plot.Model.Add(data);
}
private void Apply()
{
try {
double x0 = double.Parse(x0TextBox.Text);
double y0 = double.Parse(y0TextBox.Text);
double x1 = double.Parse(x1TextBox.Text);
double y1 = double.Parse(y1TextBox.Text);
double z0 = double.Parse(z0TextBox.Text);
double z1 = double.Parse(z1TextBox.Text);
plot.Model.FixXtoY = fixytox.Checked;
plot.Model.xLog = xlog.Checked; plot.Model.yLog = ylog.Checked; plot.Model.zLog = zlog.Checked;
plot.SetRange(x0, x1, y0, y1, z0, z1);
Reset();
} catch {
DialogResult res = MessageBox.Show("One of the entered numbers is invalid.");
throw new System.ApplicationException();
}
}
private void clearClick(object sender, EventArgs e)
{
plot.Model.Clear();
plot.SetRange(-8, 4, -4, 4);
}