Random Walk Index Polarised indicator

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

namespace cAlgo
{
    [Levels(1, 0, -1)]
    [Cloud("RWI Bears", "RWI HighLevel", FirstColor = "Green", SecondColor = "Transparent", Opacity = 0.1)]
    [Cloud("RWI LowLevel", "RWI Bulls", FirstColor = "Red", SecondColor = "Transparent", Opacity = 0.1)]
    [Indicator(IsOverlay = false, AccessRights = AccessRights.None)]
    public class mRWIp : 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; }

        [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; }
        [Output("RWI HighLevel", LineColor = "Transparent")]
        public IndicatorDataSeries outHighLevel { get; set; }
        [Output("RWI LowLevel", LineColor = "Transparent")]
        public IndicatorDataSeries outLowLevel { get; set; }

        private AverageTrueRange _atr;
        private IndicatorDataSeries _bulls, _bears;


        protected override void Initialize()
        {
            _atr = Indicators.AverageTrueRange(inpPeriod, inpSmoothType);
            _bulls = CreateDataSeries();
            _bears = CreateDataSeries();
        }

        public override void Calculate(int i)
        {
            _bulls[i] = (Bars.HighPrices[i] - (i>inpPeriod+1 ? Bars.LowPrices[i - 1 - inpPeriod] : Bars.LowPrices[i])) / _atr.Result[i] * Math.Sqrt(inpPeriod);
            _bears[i] = ((i>inpPeriod+1 ? Bars.HighPrices[i - 1 - inpPeriod] : Bars.HighPrices[i]) - Bars.LowPrices[i]) / _atr.Result[i] * Math.Sqrt(inpPeriod);

            outBulls[i] = _bulls[i];
            outBears[i] = -_bears[i];
            outHighLevel[i] = +1.0;
            outLowLevel[i] = -1.0;
        }
    }
}