Double convertTo.int?(Help)

I want Covert(double to int )… For use as index(Because the Random number produced from Double)
how?

index1780×618 153 KB

  private void RunScript(int seed, double lenght, double v, Interval domain, ref object A, ref object B)
  {
    Vector3d pt = new Vector3d();
    var rnd = new Random(seed);
    var list = new List<double>();
    List < Vector3d > vx = new List  <Vector3d>{new Vector3d(v, 0, 0),new Vector3d(-v, 0, 0),new Vector3d(0, v, 0),new Vector3d(0, -v, 0),new Vector3d(0, 0, v),new Vector3d(0, 0, -v)};

    double index;

    for(var i = 0; i < 6; i++)
    {
      list.Add(domain.ParameterAt(rnd.NextDouble()));
    }

    index = Math.Round(list[0], 0);
    int indexN = Convert.ToInt(index);

    pt = vx[indexN];
    A = pt;
    B = index; 

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