public override Point Fun(Point p)
{
var n2 = p.Y * p.Y + p.X * p.X + 1.0;
var n3 = 2.0 * p.X;
var n4 = (VariationHelper.SqrtSafe(n2 + n3) + VariationHelper.SqrtSafe(n2 - n3)) * 0.5;
if (n4 < 1.0)
{
n4 = 1.0;
}
var acosh = VariationHelper.Acosh(n4);
var n5 = p.X / n4;
if (n5 > 1.0)
{
n5 = 1.0;
}
else if (n5 < -1.0)
{
n5 = -1.0;
}
var acos = Math.Acos(n5);
if (p.Y < 0.0)
{
acos *= -1.0;
}
var n6 = acos + acosh * _out + _in / acosh;
var sinh = Math.Sinh(acosh);
var cosh = Math.Cosh(acosh);
var sin = Math.Sin(n6);
var x = W * cosh * Math.Cos(n6);
var y = W * sinh * sin;
return(new Point(x, y));
}