private static void Process(int width, int height, MagickImage image, int?quality)
{
image.Strip();
if (quality.HasValue)
{
image.Quality = quality.Value;
}
//模版的宽高比例
var templateRate = (double)width / height;
//原图片的宽高比例
var nowRate = (double)image.Width / image.Height;
if (templateRate < nowRate)
{
//以高为准缩放
// Resize each image in the collection to a width of 200. When zero is specified for the height
// the height will be calculated with the aspect ratio.
image.Resize(0, height);
image.ChopHorizontal(width, image.Width - width);
}
else
{
//以宽为准缩放
image.Resize(width, 0);
image.ChopVertical(height, image.Height - height);
}
}