Hi/Lo Swing Index indicator

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

namespace cAlgo
{
    [Levels(0, 20, 80, 100)]
    [Indicator(AccessRights = AccessRights.None)]
    public class mHiLoSwingIndex : Indicator
    {
        [Parameter("Periods (10)", DefaultValue = 10)]
        public int inpPeriods { get; set; }
        [Parameter("History Periods (200)", DefaultValue = 200)]
        public int inpHistoryPeriods { get; set; }
        [Parameter("Smooth Periods (7)", DefaultValue = 7)]
        public int inpSmoothPeriods { get; set; }

        [Output("High/Low Swing Index", IsHistogram = false, LineColor = "Black", PlotType = PlotType.Line, LineStyle = LineStyle.Solid, Thickness = 1)]
        public IndicatorDataSeries outSwingIndex { get; set; }
        [Output("Signalw", IsHistogram = false, LineColor = "Red", PlotType = PlotType.Line, LineStyle = LineStyle.Solid, Thickness = 1)]
        public IndicatorDataSeries outSignal { get; set; }
        
        private IndicatorDataSeries _diff, _ratio, _normalized;
        private MovingAverage _smooth, _signal;
                

        protected override void Initialize()
        {
            _diff = CreateDataSeries();
            _ratio = CreateDataSeries();
            _normalized = CreateDataSeries();
            _smooth = Indicators.MovingAverage(_ratio, inpPeriods, MovingAverageType.Exponential);
            _signal = Indicators.MovingAverage(_normalized, inpSmoothPeriods, MovingAverageType.Weighted);
        }

        public override void Calculate(int i)
        {
            _diff[i] = Bars.HighPrices[i] - Bars.LowPrices[i];
            _ratio[i] = Bars.MedianPrices[i] / _diff[i];
            _normalized[i] = 100 * (_smooth.Result[i] - _smooth.Result.Minimum(inpHistoryPeriods)) / (_smooth.Result.Maximum(inpHistoryPeriods) - _smooth.Result.Minimum(inpHistoryPeriods));
            
            outSwingIndex[i] = _normalized[i];
            outSignal[i] = _signal.Result[i];
        }
    }
}