Williams Accumulation Distribution zones

using System;
using cAlgo.API;
using cAlgo.API.Internals;
using cAlgo.API.Indicators;
using cAlgo.Indicators;

namespace cAlgo
{
    [Levels(0)]
    //[Cloud("MACD", "Signal", Opacity = 0.2, FirstColor = "FF7CFC00")]
    [Indicator(IsOverlay = false, TimeZone = TimeZones.UTC, AccessRights = AccessRights.None)]
    public class mADzones : Indicator
    {
        [Parameter("Period Fast (5)", DefaultValue = 5)]
        public int inpPeriodFast { get; set; }
        [Parameter("Period Slow (34)", DefaultValue = 34)]
        public int inpPeriodSlow { get; set; }
        [Parameter("Smooth Type (sma)", DefaultValue = MovingAverageType.Simple)]
        public MovingAverageType inpSmoothType { get; set; }

        [Output("Fast Component", LineColor = "Red", LineStyle = LineStyle.Solid, Thickness = 1)]
        public IndicatorDataSeries outFastComponent { get; set; }
        [Output("Slow Component", LineColor = "Black", LineStyle = LineStyle.Solid, Thickness = 1)]
        public IndicatorDataSeries outSlowComponent { get; set; }
        
        private WilliamsAccumulationDistribution _AD;
        private MovingAverage _mafast, _maslow;
        private IndicatorDataSeries _deltafast, _deltaslow;
        

        protected override void Initialize()
        {
            _AD = Indicators.WilliamsAccumulationDistribution();
            _mafast = Indicators.MovingAverage(_AD.Result, inpPeriodFast, inpSmoothType);
            _maslow = Indicators.MovingAverage(_AD.Result, inpPeriodSlow, inpSmoothType);
            _deltafast = CreateDataSeries();
            _deltaslow = CreateDataSeries();
        }

        public override void Calculate(int i)
        {
            _deltafast[i] = _mafast.Result[i] - _maslow.Result[i];
            _deltaslow[i] = _AD.Result[i] - _maslow.Result[i];
            
            outFastComponent[i] = _deltafast[i];
            outSlowComponent[i] = _deltaslow[i];
        }
    }
}