From 36fec83f37c1fe749d877f312f5f9b4f214d4723 Mon Sep 17 00:00:00 2001
From: Sean <skessler1964@gmail.com>
Date: Wed, 2 Jul 2025 06:59:53 -0400
Subject: [PATCH] Added DrawTriangle

---
 .../CNNProcessing/ImageHelper.cs              | 24 +++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/MarketData/MarketDataLib/CNNProcessing/ImageHelper.cs b/MarketData/MarketDataLib/CNNProcessing/ImageHelper.cs
index 0bedaf1..03c7e97 100644
--- a/MarketData/MarketDataLib/CNNProcessing/ImageHelper.cs
+++ b/MarketData/MarketDataLib/CNNProcessing/ImageHelper.cs
@@ -611,5 +611,29 @@ namespace MarketData.CNNProcessing
         canvas.DrawCircle(txPointCenter, radius, paint);
         return true;
       }
+
+      /// <summary>
+      /// Draw a triangle centered inside the bounded area defined by imageWidth, imageHeight
+      /// </summary>
+      /// <param name="imageWidth">The width of the bounded area</param>
+      /// <param name="imageHeight">The height of the bounded area</param>
+      /// <param name="paintStroke">The paint stroke to to use to outline the triangle</param>
+      /// <param name="paintFill">The paint stroke to use to fill the triangle</param>
+      public void DrawTriangle(int imageWidth, int imageHeight, SKPaint paintStroke, SKPaint paintFill)
+      {
+        using SKPath path = new SKPath();
+        float hLength = (float)imageWidth / 2f;
+        CreateImage(imageWidth,imageHeight);
+        Transparent(SKColors.White);
+        SKPoint txOrigin = pointMapping.MapPoint(new SKPoint(imageWidth/2.0f,imageHeight));
+        using SKCanvas canvas = new SKCanvas(bitmap);
+        path.MoveTo(txOrigin.X, txOrigin.Y);
+        path.LineTo(txOrigin.X - hLength, (txOrigin.Y + imageHeight)-1f);
+        path.LineTo((txOrigin.X + hLength)-1f, (txOrigin.Y + imageHeight)-1f);
+        path.LineTo(txOrigin.X, txOrigin.Y);
+        path.Close();
+        canvas.DrawPath(path, paintStroke);
+        canvas.DrawPath(path, paintFill);
+      }
    }
 }
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