Moving Average Ribbon

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

namespace cAlgo
{
    [Cloud("Max", "Mean", FirstColor = "Lime")]
    [Cloud("Mean", "Min", FirstColor = "Crimson")]
    [Indicator(IsOverlay = true, TimeZone = TimeZones.UTC, AccessRights = AccessRights.None)]
    public class MovingAverageRibbon : Indicator
    {
        [Parameter("MA Period Start", DefaultValue = 50)]
        public int MAPeriodStart { get; set; }

        [Parameter("MA Period Step", DefaultValue = 10)]
        public int MAPeriodStep { get; set; }

        [Parameter("# of MA", DefaultValue = 16, MaxValue = 200)]
        public int NumMA { get; set; }

        [Parameter("MA Type", DefaultValue = MovingAverageType.Simple)]
        public MovingAverageType MaType { get; set; }



        [Output("Mean", LineColor = "Gray", PlotType = PlotType.Line, LineStyle = LineStyle.Solid, Thickness = 1)]
        public IndicatorDataSeries Mean { get; set; }

        [Output("Max", LineColor = "Lime", PlotType = PlotType.Line, LineStyle = LineStyle.DotsRare, Thickness = 1)]
        public IndicatorDataSeries Max { get; set; }

        [Output("Min", LineColor = "Crimson", PlotType = PlotType.Line, LineStyle = LineStyle.DotsRare, Thickness = 1)]
        public IndicatorDataSeries Min { get; set; }



        private MovingAverage[] ma;


        protected override void Initialize()
        {
            ma = new MovingAverage[NumMA];
            for (int i = 0; i < NumMA; i++)
            {
                ma[i] = Indicators.MovingAverage(Bars.ClosePrices, MAPeriodStart + i * MAPeriodStep, MaType);
            }
        }

        public override void Calculate(int index)
        {
            Mean[index] = ma.Average(x => x.Result[index]);
            Max[index] = ma.Max(x => x.Result[index]);
            Min[index] = ma.Min(x => x.Result[index]);
        }
    }
}