SIMD Refactor: Merge simd-dev into dev (#55)

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com> Co-authored-by: aider (openrouter/anthropic/claude-sonnet-4) <aider@aider.chat> Co-authored-by: Warp <agent@warp.dev>
2026-08-23 04:58:08 +00:00 · 2026-01-18 19:02:03 -08:00
parent 5bcdf8d614
commit 86fe32a682
1750 changed files with 198235 additions and 80539 deletions
@@ -0,0 +1,75 @@
+using System.Drawing;
+using TradingPlatform.BusinessLayer;
+using static QuanTAlib.IndicatorExtensions;
+
+namespace QuanTAlib;
+
+/// <summary>
+/// CHANGE (Percentage Change) Quantower indicator.
+/// Calculates relative price movement over a lookback period.
+/// Formula: (current - past) / past
+/// </summary>
+public class ChangeIndicator : Indicator, IWatchlistIndicator
+{
+    [InputParameter("Period", 0, 1, 999, 1, 0)]
+    public int Period { get; set; } = 1;
+
+    [DataSourceInput]
+    public SourceType Source { get; set; } = SourceType.Close;
+
+    [InputParameter("Show Cold Values", sortIndex: 100)]
+    public bool ShowColdValues { get; set; } = true;
+
+    private Change? _change;
+    private Func<IHistoryItem, double>? _selector;
+
+    public int MinHistoryDepths => Period + 1;
+    public override string ShortName => $"CHANGE({Period})";
+
+    public ChangeIndicator()
+    {
+        Name = "CHANGE - Percentage Change";
+        Description = "Calculates relative price movement: (current - past) / past";
+        SeparateWindow = true;
+        OnBackGround = false;
+    }
+
+    protected override void OnInit()
+    {
+        _change = new Change(Period);
+        _selector = Source.GetPriceSelector();
+
+        AddLineSeries(new LineSeries("Change", Momentum, 2, LineStyle.Histogramm));
+        AddLineSeries(new LineSeries("Zero", Color.Gray, 1, LineStyle.Dot));
+    }
+
+    protected override void OnUpdate(UpdateArgs args)
+    {
+        if (_change == null || _selector == null) return;
+
+        var item = HistoricalData[0, SeekOriginHistory.End];
+        double value = _selector(item);
+        bool isNew = args.IsNewBar();
+
+        TValue input = new(item.TimeLeft, value);
+        _change.Update(input, isNew);
+
+        bool isHot = _change.IsHot;
+
+        LinesSeries[0].SetValue(_change.Last.Value, isHot, ShowColdValues);
+        LinesSeries[1].SetValue(0);
+
+        if (isHot || ShowColdValues)
+        {
+            double change = _change.Last.Value;
+            Color color;
+            if (change > 0)
+                color = Color.Green;
+            else if (change < 0)
+                color = Color.Red;
+            else
+                color = Color.Gray;
+            LinesSeries[0].SetMarker(0, new IndicatorLineMarker(color));
+        }
+    }
+}