Ichimoku Filled Cloud Version

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

namespace cAlgo.Indicators
{
    [Cloud("SenkouSpanB", "SenkouSpanA", Opacity = 0.2, FirstColor = "B22222", SecondColor = "FF7CFC00")]
    [Indicator(IsOverlay = true, AccessRights = AccessRights.None)]
    public class IchimokuKinkoHyo : Indicator
    {
        [Parameter(DefaultValue = 9)]
        public int periodFast { get; set; }

        [Parameter(DefaultValue = 26)]
        public int periodMedium { get; set; }

        [Parameter(DefaultValue = 52)]
        public int periodSlow { get; set; }

        [Parameter(DefaultValue = 26)]
        public int DisplacementChikou { get; set; }

        [Parameter(DefaultValue = 26)]
        public int DisplacementCloud { get; set; }

        [Output("TenkanSen", Color = Colors.Red)]
        public IndicatorDataSeries TenkanSen { get; set; }
        [Output("Kijunsen", Color = Colors.Blue)]
        public IndicatorDataSeries KijunSen { get; set; }
        [Output("ChikouSpan", Color = Colors.DarkViolet)]
        public IndicatorDataSeries ChikouSpan { get; set; }

        [Output("SenkouSpanB", Color = Colors.Red, LineStyle = LineStyle.Lines)]
        public IndicatorDataSeries SenkouSpanB { get; set; }
        [Output("SenkouSpanA", Color = Colors.Green, LineStyle = LineStyle.Lines)]
        public IndicatorDataSeries SenkouSpanA { get; set; }

        double maxfast, minfast, maxmedium, minmedium, maxslow, minslow;

        public override void Calculate(int index)
        {
            if ((index < periodFast) || (index < periodSlow))
            {
                return;
            }

            maxfast = MarketSeries.High[index];
            minfast = MarketSeries.Low[index];
            maxmedium = MarketSeries.High[index];
            minmedium = MarketSeries.Low[index];
            maxslow = MarketSeries.High[index];
            minslow = MarketSeries.Low[index];

            for (int i = 0; i < periodFast; i++)
            {
                if (maxfast < MarketSeries.High[index - i])
                {
                    maxfast = MarketSeries.High[index - i];
                }
                if (minfast > MarketSeries.Low[index - i])
                {
                    minfast = MarketSeries.Low[index - i];
                }
            }
            for (int i = 0; i < periodMedium; i++)
            {
                if (maxmedium < MarketSeries.High[index - i])
                {
                    maxmedium = MarketSeries.High[index - i];
                }
                if (minmedium > MarketSeries.Low[index - i])
                {
                    minmedium = MarketSeries.Low[index - i];
                }
            }
            for (int i = 0; i < periodSlow; i++)
            {
                if (maxslow < MarketSeries.High[index - i])
                {
                    maxslow = MarketSeries.High[index - i];
                }
                if (minslow > MarketSeries.Low[index - i])
                {
                    minslow = MarketSeries.Low[index - i];
                }
            }
            TenkanSen[index] = (maxfast + minfast) / 2;
            KijunSen[index] = (maxmedium + minmedium) / 2;
            ChikouSpan[index - DisplacementChikou] = MarketSeries.Close[index];

            SenkouSpanA[index + DisplacementCloud] = (TenkanSen[index] + KijunSen[index]) / 2;
            SenkouSpanB[index + DisplacementCloud] = (maxslow + minslow) / 2;
        }
    }
}