mirror of
https://github.com/mihakralj/QuanTAlib.git
synced 2026-07-28 01:37:43 +00:00
Miha Kralj
73 lines
2.4 KiB
C#
73 lines
2.4 KiB
C#
using System.Drawing;
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using TradingPlatform.BusinessLayer;
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namespace QuanTAlib;
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public class CmoIndicator : Indicator, IWatchlistIndicator
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{
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[InputParameter("Periods", sortIndex: 1, 1, 2000, 1, 0)]
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public int Periods { get; set; } = 9;
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[InputParameter("Data source", sortIndex: 5, variants: [
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"Open", SourceType.Open,
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"High", SourceType.High,
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"Low", SourceType.Low,
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"Close", SourceType.Close,
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"HL/2 (Median)", SourceType.HL2,
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"OC/2 (Midpoint)", SourceType.OC2,
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"OHL/3 (Mean)", SourceType.OHL3,
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"HLC/3 (Typical)", SourceType.HLC3,
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"OHLC/4 (Average)", SourceType.OHLC4,
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"HLCC/4 (Weighted)", SourceType.HLCC4
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])]
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public SourceType Source { get; set; } = SourceType.Close;
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[InputParameter("Show cold values", sortIndex: 21)]
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public bool ShowColdValues { get; set; } = true;
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private Cmo? cmo;
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protected string? SourceName;
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protected LineSeries? CmoSeries;
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public int MinHistoryDepths => Periods + 1;
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int IWatchlistIndicator.MinHistoryDepths => MinHistoryDepths;
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public CmoIndicator()
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{
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Name = "CMO - Chande Momentum Oscillator";
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Description = "Measures the momentum of price changes using the difference between the sum of recent gains and the sum of recent losses.";
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SeparateWindow = true;
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SourceName = Source.ToString();
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CmoSeries = new($"CMO {Periods}", Color.Blue, 2, LineStyle.Solid);
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AddLineSeries(CmoSeries);
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}
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protected override void OnInit()
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{
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cmo = new Cmo(Periods);
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base.OnInit();
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}
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protected override void OnUpdate(UpdateArgs args)
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{
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TValue input = this.GetInputValue(args, Source);
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cmo!.Calc(input);
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CmoSeries!.SetValue(cmo.Value);
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CmoSeries!.SetMarker(0, Color.Transparent); //OnPaintChart draws the line, hidden here
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}
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public override string ShortName => $"CMO ({Periods}:{SourceName})";
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#pragma warning disable CA1416 // Validate platform compatibility
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public override void OnPaintChart(PaintChartEventArgs args)
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{
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base.OnPaintChart(args);
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this.PaintHLine(args, 0, new Pen(Color.DarkGray, width: 1));
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this.PaintHLine(args, 50, new Pen(Color.Blue, width: 1));
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this.PaintHLine(args, -50, new Pen(Color.Blue, width: 1));
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this.PaintSmoothCurve(args, CmoSeries!, cmo!.WarmupPeriod, showColdValues: ShowColdValues, tension: 0.2);
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}
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}
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