Random Walk Index indicator

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

namespace cAlgo
{
    [Levels(0)] 
    [Indicator(IsOverlay = false, AutoRescale = true, AccessRights = AccessRights.None)]
    public class mRWI : Indicator
    {
        [Parameter("Period (13)", DefaultValue = 13, MinValue = 2)]
        public int inpPeriod { get; set; }
        [Parameter("ATR SmoothType (ema)", DefaultValue = MovingAverageType.Exponential)]
        public MovingAverageType inpSmoothType { get; set; }
        [Parameter("Result Type (atr)", DefaultValue = enumResultTypes.ATR)]
        public enumResultTypes inpResultType { get; set; }

        [Output("RWI Bulls", LineColor = "Green", PlotType = PlotType.Line, LineStyle = LineStyle.Solid, Thickness = 1)]
        public IndicatorDataSeries outBulls { get; set; }
        [Output("RWI Bears", LineColor = "Red", PlotType = PlotType.Line, LineStyle = LineStyle.Solid, Thickness = 1)]
        public IndicatorDataSeries outBears { get; set; }
        
        private AverageTrueRange _atr;
        private IndicatorDataSeries _range, _rwibulls, _rwibears;
        

        protected override void Initialize()
        {
            _atr = Indicators.AverageTrueRange(inpPeriod, inpSmoothType);
            _range = CreateDataSeries();
            _rwibulls = CreateDataSeries();
            _rwibears = CreateDataSeries();
        }

        public override void Calculate(int i)
        {
            _range[i] = Bars.HighPrices[i] - Bars.LowPrices[i];
            _rwibulls[i] = (Bars.HighPrices[i] - (i>inpPeriod ? Bars.LowPrices[i-inpPeriod] : Bars.LowPrices[i])) / ((inpResultType == enumResultTypes.ATR ? _atr.Result[i] : _range[i]) * Math.Sqrt(inpPeriod));
            _rwibears[i] = ((i>inpPeriod ? Bars.HighPrices[i-inpPeriod] : Bars.LowPrices[i]) - Bars.LowPrices[i]) / ((inpResultType == enumResultTypes.ATR ? _atr.Result[i] : _range[i]) * Math.Sqrt(inpPeriod));
            
            outBulls[i] = _rwibulls[i];
            outBears[i] = _rwibears[i];
        }
    }
 
    public enum enumResultTypes
    {
        ATR,
        Range
    }
}