using System.Numerics;
using Skeleton.Algebra.DimensionProviders;
using Skeleton.Utils.Helpers;

namespace Skeleton.Samples;
using C22 = Algebra.CategoryOf<IDim2>.OnField<Complex>.FMatrix;
/// <summary>
/// </summary>
public static class C22Samples
{
    /// <summary>
    /// </summary>
    /// <param name="a"></param>
    /// <returns></returns>
    public static IEnumerable<C22> C22AnySamples(this IEnumerable<double> a)
    {
        (Complex, Complex)[] w = a
            .RISamples()
            .ShuffleZip()
            .ToArray();
        foreach (((Complex, Complex), (Complex, Complex), (Complex, Complex)) info in w.ShuffleZip2())
            yield return new C22(
                info.Item1.Item1, info.Item1.Item2,
                info.Item2.Item1, info.Item2.Item2
            );
    }

    /// <summary>
    /// </summary>
    /// <param name="a"></param>
    /// <returns></returns>
    public static IEnumerable<C22> C22InvertibleSamples(this IEnumerable<double> a)
    {
        foreach (C22 m in a.C22AnySamples())
            if (m.Det().Magnitude > 0.2d)
                yield return m;
    }
    
}