VWAP Mean indicator

//idea: mfejza (https://ctrader.com/users/profile/58775)
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 mVWAPmean : Indicator
    {
        [Parameter("Periods (10)", DefaultValue = 10)]
        public int inpPeriods { get; set; }
 
        [Output("VWAP Bulls", LineColor = "Green", LineStyle = LineStyle.Solid, Thickness = 1)]
        public IndicatorDataSeries outVWAPbulls { get; set; }
        [Output("VWAP Bears", LineColor = "Red", LineStyle = LineStyle.Solid, Thickness = 1)]
        public IndicatorDataSeries outVWAPbears { get; set; }
        [Output("VWAP Mean", LineColor = "Black", LineStyle = LineStyle.Solid, Thickness = 1)]
        public IndicatorDataSeries outVWAPmean { get; set; }
 
        private IndicatorDataSeries _vwaphigh, _vwaplow, _mean;
 
        protected override void Initialize()
        {
            _vwaphigh = CreateDataSeries();
            _vwaplow = CreateDataSeries();
            _mean = CreateDataSeries();
        }
 
        public override void Calculate(int i)
        {
            _vwaphigh[i] = ((Bars.HighPrices.Sum(inpPeriods) * Bars.TickVolumes.Sum(inpPeriods)) / Bars.TickVolumes.Sum(inpPeriods)) / inpPeriods;
            _vwaplow[i] = ((Bars.LowPrices.Sum(inpPeriods) * Bars.TickVolumes.Sum(inpPeriods)) / Bars.TickVolumes.Sum(inpPeriods)) / inpPeriods;
            _mean[i] = (_vwaphigh[i] + _vwaplow[i]) / 2;
            
            outVWAPbulls[i] = _vwaplow[i] - _mean[i];
            outVWAPbears[i] = _vwaphigh[i] - _mean[i];
            outVWAPmean[i] = Bars.ClosePrices[i] - _mean[i];
        }
    }
}