moar Chart indicators

2026-08-21 12:08:05 +00:00 · 2024-11-07 21:40:02 -08:00
parent 2a72b2881b
commit 351214ed31
49 changed files with 697 additions and 42 deletions
@@ -0,0 +1,71 @@
+using System.Drawing;
+using TradingPlatform.BusinessLayer;
+
+namespace QuanTAlib;
+
+public class VortexIndicator : Indicator, IWatchlistIndicator
+{
+    [InputParameter("Periods", sortIndex: 1, 1, 2000, 1, 0)]
+    public int Periods { get; set; } = 14;
+
+    [InputParameter("Show cold values", sortIndex: 21)]
+    public bool ShowColdValues { get; set; } = true;
+
+    private Vortex? vortex;
+    protected LineSeries? ValueSeries;
+    protected LineSeries? PlusLine;
+    protected LineSeries? MinusLine;
+    protected LineSeries? ZeroLine;
+    public int MinHistoryDepths => Math.Max(5, Periods * 2);
+    int IWatchlistIndicator.MinHistoryDepths => MinHistoryDepths;
+
+    public VortexIndicator()
+    {
+        Name = "VORTEX - Vortex Indicator";
+        Description = "A technical indicator consisting of two oscillating lines that identify trend reversals";
+        SeparateWindow = true;
+
+        ValueSeries = new($"VORTEX({Periods})", color: IndicatorExtensions.Momentum, 2, LineStyle.Solid);
+        PlusLine = new($"VI+({Periods})", color: Color.Green, 2, LineStyle.Solid);
+        MinusLine = new($"VI-({Periods})", color: Color.Red, 2, LineStyle.Solid);
+        ZeroLine = new("Zero", Color.Gray, 1, LineStyle.Dot);
+
+        AddLineSeries(ValueSeries);
+        AddLineSeries(PlusLine);
+        AddLineSeries(MinusLine);
+        AddLineSeries(ZeroLine);
+    }
+
+    protected override void OnInit()
+    {
+        vortex = new Vortex(Periods);
+        base.OnInit();
+    }
+
+    protected override void OnUpdate(UpdateArgs args)
+    {
+        TBar input = IndicatorExtensions.GetInputBar(this, args);
+        var result = vortex!.Calc(input);
+
+        ValueSeries!.SetValue(result);
+        PlusLine!.SetValue(vortex.ViPlus);
+        MinusLine!.SetValue(vortex.ViMinus);
+        ZeroLine!.SetValue(0);
+
+        ValueSeries!.SetMarker(0, Color.Transparent);
+        PlusLine!.SetMarker(0, Color.Transparent);
+        MinusLine!.SetMarker(0, Color.Transparent);
+    }
+
+#pragma warning disable CA1416 // Validate platform compatibility
+
+    public override string ShortName => $"VORTEX({Periods})";
+
+    public override void OnPaintChart(PaintChartEventArgs args)
+    {
+        base.OnPaintChart(args);
+        this.PaintSmoothCurve(args, ValueSeries!, vortex!.WarmupPeriod, showColdValues: ShowColdValues, tension: 0.2);
+        this.PaintSmoothCurve(args, PlusLine!, vortex!.WarmupPeriod, showColdValues: ShowColdValues, tension: 0.2);
+        this.PaintSmoothCurve(args, MinusLine!, vortex!.WarmupPeriod, showColdValues: ShowColdValues, tension: 0.2);
+    }
+}