Momentum

charts for Quantower
2026-08-24 21:48:03 +00:00 · 2024-11-06 20:56:32 -08:00
parent 0bae9ce15b
commit 582a0256ec
75 changed files with 652 additions and 281 deletions
@@ -0,0 +1,59 @@
+using System.Drawing;
+using TradingPlatform.BusinessLayer;
+
+namespace QuanTAlib;
+
+public class DmiIndicator : 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 Dmi? dmi;
+    protected LineSeries? PlusDiSeries;
+    protected LineSeries? MinusDiSeries;
+    public int MinHistoryDepths => Math.Max(5, Periods * 2);
+    int IWatchlistIndicator.MinHistoryDepths => MinHistoryDepths;
+
+    public DmiIndicator()
+    {
+        Name = "DMI - Directional Movement Index";
+        Description = "Identifies the directional movement of a price by comparing successive highs and lows.";
+        SeparateWindow = true;
+
+        PlusDiSeries = new($"+DI {Periods}", color: Color.Red, 2, LineStyle.Solid);
+        MinusDiSeries = new($"-DI {Periods}", color: Color.Blue, 2, LineStyle.Solid);
+        AddLineSeries(PlusDiSeries);
+        AddLineSeries(MinusDiSeries);
+    }
+
+    protected override void OnInit()
+    {
+        dmi = new Dmi(Periods);
+        base.OnInit();
+    }
+
+    protected override void OnUpdate(UpdateArgs args)
+    {
+        TBar input = IndicatorExtensions.GetInputBar(this, args);
+        var result = dmi!.Calc(input);
+
+        PlusDiSeries!.SetValue(dmi.PlusDI);
+        MinusDiSeries!.SetValue(dmi.MinusDI);
+        PlusDiSeries!.SetMarker(0, Color.Transparent);
+        MinusDiSeries!.SetMarker(0, Color.Transparent);
+    }
+
+#pragma warning disable CA1416 // Validate platform compatibility
+
+    public override string ShortName => $"DMI ({Periods})";
+
+    public override void OnPaintChart(PaintChartEventArgs args)
+    {
+        base.OnPaintChart(args);
+        this.PaintSmoothCurve(args, PlusDiSeries!, dmi!.WarmupPeriod, showColdValues: ShowColdValues, tension: 0.2);
+        this.PaintSmoothCurve(args, MinusDiSeries!, dmi!.WarmupPeriod, showColdValues: ShowColdValues, tension: 0.2);
+    }
+}