Vector3.Norm C# (CSharp) Метод

  public float Norm () {
    return (float) Math.Sqrt(this.x * this.x + this.y * this.y + this.z * this.z);
  }

        public void UpdateTopplingCantAndSpring()
        {
            if (CarSections.Length != 0)
            {
                //FRONT BOGIE

                // get direction, up and side vectors
                Vector3 d = new Vector3(FrontAxle.Follower.WorldPosition - RearAxle.Follower.WorldPosition);
                Vector3 s;
                {
                    double t = 1.0 / d.Norm();
                    d *= t;
                    t  = 1.0 / Math.Sqrt(d.X * d.X + d.Z * d.Z);
                    double ex = d.X * t;
                    double ez = d.Z * t;
                    s  = new Vector3(ez, 0.0, -ex);
                    Up = Vector3.Cross(d, s);
                }
                // cant and radius

                //TODO: This currently uses the figures from the base car
                // apply position due to cant/toppling
                {
                    double a = baseCar.Specs.RollDueToTopplingAngle +
                               baseCar.Specs.RollDueToCantAngle;
                    double  x = Math.Sign(a) * 0.5 * TrainManagerBase.currentHost.Tracks[FrontAxle.Follower.TrackIndex].RailGauge * (1.0 - Math.Cos(a));
                    double  y = Math.Abs(0.5 * TrainManagerBase.currentHost.Tracks[FrontAxle.Follower.TrackIndex].RailGauge * Math.Sin(a));
                    Vector3 c = new Vector3(s.X * x + Up.X * y, s.Y * x + Up.Y * y, s.Z * x + Up.Z * y);
                    FrontAxle.Follower.WorldPosition += c;
                    RearAxle.Follower.WorldPosition  += c;
                }
                // apply rolling
                {
                    s.Rotate(d, -baseCar.Specs.RollDueToTopplingAngle - baseCar.Specs.RollDueToCantAngle);
                    Up.Rotate(d, -baseCar.Specs.RollDueToTopplingAngle - baseCar.Specs.RollDueToCantAngle);
                }
                // apply pitching
                if (CurrentCarSection >= 0 && CarSections[CurrentCarSection].Groups[0].Type == ObjectType.Overlay)
                {
                    d.Rotate(s, baseCar.Specs.PitchDueToAccelerationAngle);
                    Up.Rotate(s, baseCar.Specs.PitchDueToAccelerationAngle);
                    Vector3 cc = 0.5 * (FrontAxle.Follower.WorldPosition + RearAxle.Follower.WorldPosition);
                    FrontAxle.Follower.WorldPosition -= cc;
                    RearAxle.Follower.WorldPosition  -= cc;
                    FrontAxle.Follower.WorldPosition.Rotate(s, baseCar.Specs.PitchDueToAccelerationAngle);
                    RearAxle.Follower.WorldPosition.Rotate(s, baseCar.Specs.PitchDueToAccelerationAngle);
                    FrontAxle.Follower.WorldPosition += cc;
                    RearAxle.Follower.WorldPosition  += cc;
                }
            }
        }