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Added DrawTriangle

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Sean
2025-07-02 06:59:53 -04:00
parent 6c2d93d39f
commit 36fec83f37
1 changed files with 24 additions and 0 deletions
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24
MarketData/MarketDataLib/CNNProcessing/ImageHelper.cs
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@@ -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);
}
}
}