/// <summary>
/// Hyperbolic Orbit
/// </summary>
/// <param name="comet"></param>
private void GetOrbitHyper(Comet comet)
{
int idx1, idx2;
idx1 = idx2 = this.Division / 2;
double t = Math.Sqrt(comet.e * comet.e - 1.0);
double axis = comet.q / (comet.e - 1.0);
double dF = UdMath.arccosh((MAXORBIT + axis) / (axis * comet.e)) / (this.Division / 2);
double F = 0.0;
for (int i = 0; i <= (this.Division / 2); i++, F += dF)
{
double RCosV = axis * (comet.e - UdMath.cosh(F));
double RSinV = axis * t * UdMath.sinh(F);
Orbit[idx1++] = new Xyz(RCosV, RSinV, 0.0);
Orbit[idx2--] = new Xyz(RCosV, -RSinV, 0.0);
}
}