Midpoint Oscillator

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

namespace cAlgo
{
    [Levels(0)]
    [Indicator(IsOverlay = false, AccessRights = AccessRights.None)]
    public class mMPO : Indicator
    {
        [Parameter("Period (26)", DefaultValue = 26)]
        public int inpPeriod { get; set; }
        [Parameter("Smooth Period (5)", DefaultValue = 5)]
        public int inpPeriodSmooth { get; set; }
        [Parameter("Smooth Type (sma)", DefaultValue = MovingAverageType.Simple)]
        public MovingAverageType inpSmoothType { get; set; }

        [Output("MPO", LineColor = "Black", Thickness = 1)]
        public IndicatorDataSeries outMPO { get; set; }
        [Output("Signal", LineColor = "Red", Thickness = 1)]
        public IndicatorDataSeries outSignal { get; set; }

        private IndicatorDataSeries _hh, _ll, _mp;
        private MovingAverage _smooth;


        protected override void Initialize()
        {
            _hh = CreateDataSeries();
            _ll = CreateDataSeries();
            _mp = CreateDataSeries();
            _smooth = Indicators.MovingAverage(_mp, inpPeriodSmooth, inpSmoothType);
        }

        public override void Calculate(int i)
        {
            _hh[i] = i>inpPeriod ? Bars.HighPrices.Maximum(inpPeriod) : Bars.HighPrices[i];
            _ll[i] = i>inpPeriod ? Bars.LowPrices.Minimum(inpPeriod) : Bars.LowPrices[i];
            _mp[i] = _hh[i] != _ll[i] ? 100.0 * (2 * Bars.ClosePrices[i] - _hh[i] - _ll[i]) / (_hh[i] - _ll[i]) : 0;

            outMPO[i] = _mp[i];
            outSignal[i] = i>inpPeriod ? _smooth.Result[i] : _mp[i];
        }
    }
}