異なるサイズの画像を調和とパディングで組み合わせる方法

bool mergeHorizontal = true; // or false for vertical
string alignment = "center"; // options: "top", "center", "bottom" for horizontal; "left", "center", "right" for vertical
string[] files = Directory.GetFiles("./input", "*.jpg");

var images = files.Select(f => Image.Load(f)).ToList();
int maxWidth = images.Max(img => img.Width);
int maxHeight = images.Max(img => img.Height);
int totalWidth = mergeHorizontal ? images.Sum(img => img.Width) : maxWidth;
int totalHeight = mergeHorizontal ? maxHeight : images.Sum(img => img.Height);
int padding = 20; // px between images

using (var outImg = Image.Create(new PngOptions(), totalWidth + (mergeHorizontal ? padding * (images.Count - 1) : 0), totalHeight + (mergeHorizontal ? 0 : padding * (images.Count - 1))))
{
    var graphics = new Aspose.Imaging.Graphics(outImg);
    graphics.Clear(Color.White); // Set background color
    int x = 0, y = 0;
    foreach (var img in images)
    {
        if (mergeHorizontal)
        {
            // Vertical alignment: top, center, bottom
            int drawY = alignment == "top" ? 0 : alignment == "bottom" ? maxHeight - img.Height : (maxHeight - img.Height) / 2;
            graphics.DrawImage(img, new Aspose.Imaging.Rectangle(x, drawY, img.Width, img.Height));
            x += img.Width + padding;
        }
        else
        {
            // Horizontal alignment: left, center, right
            int drawX = alignment == "left" ? 0 : alignment == "right" ? maxWidth - img.Width : (maxWidth - img.Width) / 2;
            graphics.DrawImage(img, new Aspose.Imaging.Rectangle(drawX, y, img.Width, img.Height));
            y += img.Height + padding;
        }
    }
    outImg.Save("./output/merged_aligned.png");
}
images.ForEach(img => img.Dispose());