protected void CalcPoints(Color c)
{
float A = (float)parameters[0];
float B = (float)parameters[6];
DirectBitmap map = Map;
deltaX = (1.0 * extremas.xmax - extremas.xmin);
deltaY = (1.0 * extremas.ymax - extremas.ymin);
PointF p0 = calcedPoints[0];
double Xr0 = (int)(10 + (Map.Width - 20) * (p0.X - extremas.xmin) / deltaX);
double Yr0 = (int)(10 + (Map.Height - 20) * (p0.Y - extremas.ymin) / deltaY);
for (int i = 1; i < calcedPoints.Count; i++)
{
PointF p = calcedPoints[i];
double Xr = (int)(10 + (Map.Width - 20) * (p.X - extremas.xmin) / deltaX);
double Yr = (int)(10 + (Map.Height - 20) * (p.Y - extremas.ymin) / deltaY);
if (Yr < 0)
{
Yr = 0;
}
if (Yr >= Map.Height)
{
Yr = Map.Height - 1;
}
if (Math.Abs(Xr) >= Map.Width)
{
Xr = Map.Width - 1;
}
map.SetLine((int)Xr0, (int)Yr0, (int)Xr, (int)Yr, Color.Black);
Xr0 = Xr;
Yr0 = Yr;
}
}
protected void CalcPoints(Color c)
{
float A = (float)parameters[0];
float B = (float)parameters[6];
DirectBitmap map = Map;
//bol spiraal van Esscher: 2 schepen piraat <--> koopvaart
double halfRoot2 = 1 / Math.Sqrt(2);
double Q = halfRoot2 * Math.Sqrt(1 - B * B);
// Calculate the values.
double deltaAlpha = Math.PI / 50;
double xr0 = 0;
double yr0 = 0;
for (long N = -maxIterations / 2; N < maxIterations / 2; N++)
{
double S = N * deltaAlpha;
double Phi = Math.Atan(Math.Sinh(A * S));
if (!spreadA)
{
Phi = Math.Atan(A * S);
}
double X = Math.Cos(S) * Math.Cos(Phi);
double Y = Math.Sin(S) * Math.Cos(Phi);
double Z = Math.Sin(Phi);
double U = halfRoot2 * (Y - X);
double V = -Q * (Y + X) + B * Z;
double Xr = (int)(10 + (Map.Width - 20) * (U - extremas.xmin) / deltaX);
double Yr = (int)(10 + (Map.Height - 20) * (V - extremas.ymin) / deltaY);
if (Yr < 0)
{
Yr = 0;
}
if (Yr >= Map.Height)
{
Yr = Map.Height - 1;
}
if (N == -maxIterations / 2)
{
map.SetPixel((int)Xr, (int)Yr, Color.Black);
}
else
{
map.SetPixel((int)Xr, (int)Yr, Color.Black);
map.SetLine(Xr, Yr, xr0, yr0, Color.Black);
}
xr0 = Xr;
yr0 = Yr;
}
}
