/// <summary>
 /// result = f0 + (f1 - f2) * t
 /// </summary>
 public static void AddScaledDelta(this IDiscreteField <Vec2d> f0, IDiscreteField <Vec2d> f1, IDiscreteField <Vec2d> f2, IDiscreteField <double> t, IDiscreteField <Vec2d> result, bool parallel = false)
 {
     if (parallel)
     {
         ArrayMath.AddScaledDeltaParallel(f0.Values, f1.Values, f2.Values, t.Values, f0.Count, result.Values);
     }
     else
     {
         ArrayMath.AddScaledDelta(f0.Values, f1.Values, f2.Values, t.Values, f0.Count, result.Values);
     }
 }