Accumulation Volume RVI

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

namespace cAlgo
{
    [Cloud("Volume Accumulation", "Levelzero", FirstColor = "ForestGreen", SecondColor = "Orange", Opacity = 0.3)]
    [Levels(0)]
    [Indicator(IsOverlay = false, AccessRights = AccessRights.None, AutoRescale = true)]
    public class mAccumulationVolumeRVI : Indicator
    {
        [Output("Volume Accumulation", LineColor = "Black", LineStyle = LineStyle.Solid, Thickness = 1)]
        public IndicatorDataSeries outVolumeAccumulation { get; set; }
        [Output("Levelzero", LineColor = "Transparent", PlotType = PlotType.Line, Thickness = 1)]
        public IndicatorDataSeries outLevelZero { get; set; }
        
        private IndicatorDataSeries _openclose, _volumeaccumulation;


        protected override void Initialize()
        {
            _openclose = CreateDataSeries();
            _volumeaccumulation = CreateDataSeries();
        }

        public override void Calculate(int i)
        {
            _openclose[i] = ((Bars.ClosePrices[i] - Bars.OpenPrices[i]) + 2 * (Bars.ClosePrices[i-1] - Bars.OpenPrices[i-1]) + 2 * (Bars.ClosePrices[i-2] - Bars.OpenPrices[i-2]) + (Bars.ClosePrices[i-3] - Bars.OpenPrices[i-3])) / 6;
            _volumeaccumulation[i] = (Bars.HighPrices[i] - Bars.LowPrices[i] !=0 ? _openclose[i] * ( 2 * Bars.ClosePrices[i] - Bars.HighPrices[i] - Bars.LowPrices[i]) / (Bars.HighPrices[i] - Bars.LowPrices[i]) : 0);
            
            outVolumeAccumulation[i] = _volumeaccumulation[i];
            outLevelZero[i] = 0;
        }
    }
}