MACD Crossover with Colors (v2)

// -------------------------------------------------------------------------------------------------
//
//    This code is a cAlgo API MACD Crossover indicator provided by njardim@email.com on Dec 2015.
//
//    Based on the original MACD Crossover indicator from cTrade.
//
// -------------------------------------------------------------------------------------------------

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

namespace cAlgo
{
    [Indicator(IsOverlay = false, TimeZone = TimeZones.UTC, AccessRights = AccessRights.None)]
    public class MACDCrossover : Indicator
    {

        public MacdCrossOver MacdCrossOver;

        [Parameter()]

        public DataSeries Source { get; set; }

        [Parameter("Adaptive (auto-color)", DefaultValue = false)]
        public bool OnAdaptive { get; set; }

        [Parameter("Verbose", DefaultValue = true)]
        public bool OnVerbose { get; set; }

        [Parameter("Long Cycle", DefaultValue = 26)]
        public int LongCycle { get; set; }

        [Parameter("Short Cycle", DefaultValue = 12)]
        public int ShortCycle { get; set; }

        [Parameter("Signal Periods", DefaultValue = 9)]
        public int Periods { get; set; }

        [Output("Histogram Up", PlotType = PlotType.Histogram, Color = Colors.DodgerBlue)]
        public IndicatorDataSeries HistogramPositive { get; set; }

        [Output("Histogram Down", PlotType = PlotType.Histogram, Color = Colors.Red)]
        public IndicatorDataSeries HistogramNegative { get; set; }

        [Output("MACD", Color = Colors.DodgerBlue, LineStyle = LineStyle.Lines)]
        public IndicatorDataSeries MACD { get; set; }

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

        protected override void Initialize()
        {

            MacdCrossOver = Indicators.MacdCrossOver(Source, LongCycle, ShortCycle, Periods);

        }

        public override void Calculate(int index)
        {

            if (OnAdaptive)
            {

                if (MacdCrossOver.Histogram[index] > MacdCrossOver.Histogram[index - 1])
                {
                    HistogramPositive[index] = MacdCrossOver.Histogram[index];
                }

                else if (MacdCrossOver.Histogram[index] < MacdCrossOver.Histogram[index - 1])
                {
                    HistogramNegative[index] = MacdCrossOver.Histogram[index];
                }
            }
            else
            {
                if (MacdCrossOver.Histogram[index] > 0)
                {
                    HistogramPositive[index] = MacdCrossOver.Histogram[index];
                }

                else if (MacdCrossOver.Histogram[index] < 0)
                {
                    HistogramNegative[index] = MacdCrossOver.Histogram[index];
                }
            }

            if (OnVerbose)
            {

                if (MacdCrossOver.MACD[index] > -0.0001 && MacdCrossOver.MACD[index] < 0.0001)
                {
                    if (MacdCrossOver.MACD[index] > MacdCrossOver.Signal[index])
                    {
                        ChartObjects.DrawText("Position", "Long: 0", StaticPosition.BottomCenter, Colors.DodgerBlue);
                    }
                    else
                    {
                        ChartObjects.DrawText("Position", "Short: 0", StaticPosition.BottomCenter, Colors.Red);
                    }
                }

                else if (MacdCrossOver.MACD[index] > MacdCrossOver.Signal[index])
                {
                    var nMacd = String.Format("{0}", Math.Round(MacdCrossOver.MACD[index], Symbol.Digits));
                    ChartObjects.DrawText("Position", "Long: " + nMacd, StaticPosition.BottomCenter, Colors.DodgerBlue);
                }

                else if (MacdCrossOver.MACD[index] < MacdCrossOver.Signal[index])
                {
                    var nMacd = String.Format("{0}", Math.Round(MacdCrossOver.MACD[index], Symbol.Digits));
                    ChartObjects.DrawText("Position", "Short: " + nMacd, StaticPosition.BottomCenter, Colors.Red);
                }
            }

            Signal[index] = MacdCrossOver.Signal[index];

            MACD[index] = MacdCrossOver.MACD[index];

        }
    }
}