private static double GetY(double curvatureRate, double length)
{
if (length == 0)
{
// even if curvatureRate is NaN
return(0);
}
return(FresnelIntegrals.S(length * Math.Abs(curvatureRate)) / curvatureRate);
}
private static double GetX(double curvatureRate, double length)
{
if (length == 0)
{
// even if curvatureRate is NaN
return(0);
}
return(FresnelIntegrals.C(length * curvatureRate) / curvatureRate);
}
private static Point GetPoint(double curvatureRate, double length)
{
var c = 0.0;
var s = 0.0;
if (Math.Abs(length) >= double.Epsilon)
{
FresnelIntegrals.Evaluate(length * Math.Abs(curvatureRate), out c, out s);
c = c / Math.Abs(curvatureRate);
s = s / curvatureRate;
}
return(new Point(c, s));
}
