Apply tag overlays onto avatars again, had been dropped when switchin…

…g to ImageSharp. Also, licensing notice about ImageSharp in Readme

CelesteNet.Server.FrontendModule/RCEPs/RCEPPublic.cs

@@ -133,7 +133,7 @@ public static void DiscordOAuth(Frontend f, HttpRequestEventArgs c) {
 
             using (avatarOrig)
             using (Image avatarScale = avatarOrig.Clone(x => x.Resize(64, 64, sampler: KnownResamplers.Lanczos3)))
-            using (Image avatarFinal = avatarOrig.Clone(x => x.Resize(64, 64, sampler: KnownResamplers.Lanczos3).ApplyRoundedCorners(1.0f))) {
+            using (Image avatarFinal = avatarScale.Clone(x => x.ApplyRoundedCorners(1.0f).ApplyTagOverlays(f, info))) {
 
                 using (Stream s = f.Server.UserData.WriteFile(uid, "avatar.orig.png"))
                     avatarScale.SaveAsPng(s);
@@ -151,6 +151,25 @@ public static void DiscordOAuth(Frontend f, HttpRequestEventArgs c) {
             });
         }
 
+        private static IImageProcessingContext ApplyTagOverlays(this IImageProcessingContext context, Frontend f, BasicUserInfo info) {
+
+            context.SetGraphicsOptions(new GraphicsOptions() {
+                Antialias = true,
+                AlphaCompositionMode = PixelAlphaCompositionMode.SrcOver
+            });
+
+            foreach (string tagName in info.Tags) {
+                using Stream? asset = f.OpenContent($"frontend/assets/tags/{tagName}.png", out _, out _, out _);
+                if (asset == null)
+                    continue;
+
+                using Image tag = Image.Load(asset);
+                context.DrawImage(tag, 1.0f);
+            }
+
+            return context;
+        }
+
         // These functions copied from ImageSharp's Samples code -- https://github.com/SixLabors/Samples/blob/main/ImageSharp/AvatarWithRoundedCorner/Program.cs
 
         // This method can be seen as an inline implementation of an `IImageProcessor`:

README.md

@@ -21,4 +21,10 @@ It lets you join levels together with your friends or complete strangers, even j
 ## How do I play on CelesteNet?
 
 First, make sure that you've installed [Everest (mod loader) via Olympus (mod manager)][everest-site].
-Click on the "Download CelesteNet" button above, then click the "1-CLICK INSTALL" button on the latest version.
+Click on the "Download CelesteNet" button above, then click the "1-CLICK INSTALL" button on the latest version.
+
+---
+
+#### License notice
+
+The CelesteNet.Server.FrontendModule project/module uses [ImageSharp](https://github.com/SixLabors/ImageSharp/) under Apache 2.0 license terms per [Six Labors Split License 1.0](https://github.com/SixLabors/ImageSharp/blob/main/LICENSE)