OctreeBox.BorderDistance C# (CSharp) Method

    public double BorderDistance(float x, float y, float z)
    {
        double nsdistance;
        double ewdistance;
        double fbdistance;

        if (Left <= x && x <= Right)
            ewdistance = 0;
        else
            ewdistance = Math.Min((Math.Abs(x - Right)), (Math.Abs(x - Left)));

        if (Front <= y && y <= Back)
            fbdistance = 0;
        else
            fbdistance = Math.Min(Math.Abs(y - Back), Math.Abs(y - Front));

        if (Bottom <= z && z <= Top)
            nsdistance = 0;
        else
            nsdistance = Math.Min(Math.Abs(z - Top), Math.Abs(z - Bottom));

        return Math.Sqrt(nsdistance*nsdistance +
                         ewdistance*ewdistance +
                         fbdistance*fbdistance);
    }