How to make a zigzag fibo indicator for cAlego?

How to make a zigzag fibo indicator for cAlego?

I have an indicator that the problem is that I can not identify the peaks and then stretched Fibonacci lines. How can we draw lines in the coordinates x. y.

How should look indicator shown in the picture.

And without indicator zigzag fibo.

thank you.

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


namespace cAlgo.Indicators
{
    [Indicator(IsOverlay = true)]
    public class ZigZag:Indicator
    {
        [Parameter]
        public DataSeries Source { get; set; }

        [Parameter(DefaultValue = 12)]
        public int Depth { get; set; }

        [Parameter(DefaultValue = 5)]
        public int Deviation { get; set; }
        
        [Parameter(DefaultValue = 3)]
        public int BackStep { get; set; }

        [Output("ZigZag", Color = Colors.OrangeRed)]
        public IndicatorDataSeries Result { get; set; }

        #region Private fields
        
        private double _lastLow;
        private double _lastHigh;
        private double _low;
        private double _high;
        private int _lastHighIndex;
        private int _lastLowIndex;
        private int _type;
        private double _point;
        private double _currentLow;
        private double _currentHigh;

        private IndicatorDataSeries _highZigZags; 
        private IndicatorDataSeries _lowZigZags;
        
        #endregion

        protected override void Initialize()
        {
            _highZigZags = CreateDataSeries();
            _lowZigZags = CreateDataSeries();
            _point = Symbol.PointSize;
        }

        public override void Calculate(int index)
        {
           
            if (index < Depth)
            {
                Result[index] = 0;
                _highZigZags[index] = 0;
                _lowZigZags[index] = 0;
                return;
            }

            _currentLow = Functions.Minimum(MarketSeries.Low, Depth);            
            if (Math.Abs(_currentLow - _lastLow) < double.Epsilon)
                _currentLow = 0.0;
            else
            {
                _lastLow = _currentLow;
                
                if ((MarketSeries.Low[index] - _currentLow) > (Deviation * _point))
                    _currentLow = 0.0;
                else
                {
                    for (int i = 1; i <= BackStep; i++)
                    {
                        if (Math.Abs(_lowZigZags[index - i]) > double.Epsilon 
                            && _lowZigZags[index - i] > _currentLow)
                            _lowZigZags[index - i] = 0.0;
                    }
                }
            }
            if (Math.Abs(MarketSeries.Low[index] - _currentLow) < double.Epsilon)
                _lowZigZags[index] = _currentLow;
            else
                _lowZigZags[index] = 0.0;

            _currentHigh = Functions.Maximum(MarketSeries.High, Depth);

            if (Math.Abs(_currentHigh - _lastHigh) < double.Epsilon)
                _currentHigh = 0.0;
            else
            {
                _lastHigh = _currentHigh;

                if ((_currentHigh - MarketSeries.High[index] ) > (Deviation * _point))
                    _currentHigh = 0.0;
                else
                {
                    for (int i = 1; i <= BackStep; i++)
                    {
                        if (Math.Abs(_highZigZags[index - i]) > double.Epsilon && _highZigZags[index - i] < _currentHigh)
                            _highZigZags[index - i] = 0.0;
                    }
                }
            }

            if (Math.Abs(MarketSeries.High[index] - _currentHigh) < double.Epsilon)
                _highZigZags[index] = _currentHigh;
            else
                _highZigZags[index] = 0.0;


            switch(_type)
            {
                case 0:
                    if(Math.Abs(_low - 0) < double.Epsilon && Math.Abs(_high - 0) < double.Epsilon)
                    {
                        if(Math.Abs(_highZigZags[index]) > double.Epsilon)
                        {
                            _high = MarketSeries.High[index];
                            _lastHighIndex = index;
                            _type = -1;
                            Result[index] = _high;
                        }
                        if(Math.Abs(_lowZigZags[index]) > double.Epsilon)
                        {
                            _low = MarketSeries.Low[index];
                            _lastLowIndex = index;
                            _type = 1;
                            Result[index] = _low;
                        }
                    }
                    break;
                case 1:
                    if (Math.Abs(_lowZigZags[index]) > double.Epsilon && _lowZigZags[index] < _low && Math.Abs(_highZigZags[index] - 0.0) < double.Epsilon)
                    {
                        Result[_lastLowIndex] = double.NaN;
                        _lastLowIndex = index;
                        _low = _lowZigZags[index];
                        Result[index] = _low;
                    }
                    if (Math.Abs(_highZigZags[index] - 0.0) > double.Epsilon && Math.Abs(_lowZigZags[index] - 0.0) < double.Epsilon)
                    {
                        _high = _highZigZags[index];
                        _lastHighIndex = index;
                        Result[index] = _high;
                        _type = -1;
                    }
                    break;
                case -1:
                    if (Math.Abs(_highZigZags[index]) > double.Epsilon && _highZigZags[index] > _high && Math.Abs(_lowZigZags[index] - 0.0) < double.Epsilon)
                    {
                        Result[_lastHighIndex] = double.NaN;
                        _lastHighIndex = index;
                        _high = _highZigZags[index];
                        Result[index] = _high;
                    }
                    if (Math.Abs(_lowZigZags[index]) > double.Epsilon && Math.Abs(_highZigZags[index]) <= double.Epsilon)
                    {
                        _low = _lowZigZags[index];
                        _lastLowIndex = index;
                        Result[index] = _low;
                        _type = 1;
                    }
                    break;
                default: return;
            }
            
        }
        
    }
}