Can we have a page detailing the cropping technique along with this one that is about the user interface?

[omatrot]

I'm trying to write backend code to crop a bitmap. So far, my code is not working. I've found this article confusing about the necessary steps to crop away from any interface.

For instance, I have this code that is not working and I do not know why...

        private string ConvertSVGToPNGRectangleWithSkiaSharpExtended(string path, double left, double top, double right, double bottom)
        {
            var svg = new SkiaSharp.Extended.Svg.SKSvg();
            var picture = svg.Load(path);

            // Get the initial map size
            var sourceRect = new SKRect(picture.CullRect.Left, picture.CullRect.Top, picture.CullRect.Width, picture.CullRect.Height);

            // Croppng Rect
            var cropRect = new SKRect((int)left, (int)top, (int)right, (int)bottom);

            var croppedBitmap = new SKBitmap((int)cropRect.Width, (int)cropRect.Height);

            using var canvas = new SKCanvas(croppedBitmap);
            canvas.Clear(SKColors.Transparent);
            canvas.DrawBitmap(croppedBitmap, sourceRect, cropRect);

            var data = croppedBitmap.Encode(SKEncodedImageFormat.Png, 100);

            path = Path.ChangeExtension(path, "PNG");
            using var imageStream = new FileStream(path, FileMode.Create);
            data.SaveTo(imageStream);

            return path;
        }

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• ID: c2103650-966c-ac1f-1422-db102483444e
• Version Independent ID: cf19f39c-5fe6-0fe5-653c-a747579886fa
• Content: Cropping SkiaSharp bitmaps - Xamarin
• Content Source: docs/xamarin-forms/user-interface/graphics/skiasharp/bitmaps/cropping.md
• Product: xamarin
• Technology: xamarin-skiasharp
• GitHub Login: @davidbritch
• Microsoft Alias: dabritch