/// <summary>
 /// result = f0 + f1 * t
 /// </summary>
 public static void AddScaled(this IDiscreteField <Vec3d> f0, IDiscreteField <Vec3d> f1, double t, IDiscreteField <Vec3d> result, bool parallel = false)
 {
     if (parallel)
     {
         ArrayMath.AddScaledParallel(f0.Values, f1.Values, t, f0.Count, result.Values);
     }
     else
     {
         ArrayMath.AddScaled(f0.Values, f1.Values, t, f0.Count, result.Values);
     }
 }