zACosVariation.cs

using System;
using System.Numerics;
 
namespace Waher.Script.Fractals.IFS.Variations.ComplexVariations
{
    public class ZACosVariation : FlameVariationZeroParameters
    {
        public ZACosVariation(int Start, int Length, Expression Expression)
            : base(Start, Length, Expression)
        {
        }
 
        public override void Operate(ref double x, ref double y)
        {
            Complex z = new Complex(x, y);
            z = Complex.Log(z * Complex.ImaginaryOne + Complex.Sqrt(1 - z * z));
 
            x = 0.5 * Math.PI - z.Imaginary;
            y = z.Real;
        }
 
        public override string FunctionName => nameof(ZACosVariation);
    }
}