Added the ability to request arbitrary thumbnail ratios

1 files changed, 16 insertions, 0 deletions

diff --git a/Services/MediaService.cs b/Services/MediaService.cs
index 6019f3f..1cfc345 100644
--- a/Services/MediaService.cs
+++ b/Services/MediaService.cs
@@ -316,6 +316,22 @@ public class MediaService : IMediaService {
         if(height > image.Height)
             height = (int) image.Height;
 
+        // Crop the image if a different aspect ratio is specified
+        if(width is not null && height is not null) {
+            double requestedRatio = (double) width / (double) height;
+            double currentRatio   = (double) image.Width / (double) image.Height;
+
+            double w = image.Width;
+            double h = image.Height;
+
+            if(requestedRatio < currentRatio)
+                w = w / currentRatio * requestedRatio;
+            if(requestedRatio > currentRatio)
+                h = h / requestedRatio * currentRatio;
+
+            image.Extent((uint) w, (uint) h, Gravity.Center);
+        }
+
         image.Thumbnail((uint) (width ?? -1), (uint) (height ?? -1));
         image.Write(thumbPath, MagickFormat.Jpeg);