rename textureIndex -> photoIndex

Program.cs

@@ -257,7 +257,7 @@ public class Game : GameWindow {
   int ElementBufferObject;
   int VertexArrayObject;
   List<Photo> photos = new();
-  int textureIndex = 0; // FIXME: rename to photoIndex
+  int photoIndex = 0;
   Shader shader = new();
   Matrix4 projection;
 
@@ -278,7 +278,7 @@ public class Game : GameWindow {
         Box2i box = geometry.ThumbnailBoxes[i];
         if (box.ContainsInclusive((Vector2i) MouseState.Position)) {
           if (0 <= i && i < photos.Count) {
-            textureIndex = i;
+            photoIndex = i;
           }
         }
       }
@@ -296,15 +296,15 @@ public class Game : GameWindow {
 
     // FIXME: make a proper Model class for tracking the state of the controls?
     if (input.IsKeyPressed(Keys.Down) || now > downTimer) {
-      if (textureIndex < photos.Count - 1) {
+      if (photoIndex < photos.Count - 1) {
         downTimer = now + 10000 * 200;
-        textureIndex++;
+        photoIndex++;
       }
     }
     if (input.IsKeyPressed(Keys.Up) || now > upTimer) {
-      if (textureIndex > 0) {
+      if (photoIndex > 0) {
         upTimer = now + 10000 * 200;
-        textureIndex--;
+        photoIndex--;
       }
     }
   }
@@ -365,7 +365,7 @@ public class Game : GameWindow {
     GL.BindBuffer(BufferTarget.ArrayBuffer, VertexBufferObject);
     GL.ActiveTexture(TextureUnit.Texture0);
 
-    Texture active = photos[textureIndex].Texture;
+    Texture active = photos[photoIndex].Texture;
 
     // FIXME: make a function for scaling & centering one box on another.
     float scaleX = 1f * geometry.PhotoBox.Size.X / active.Size.X;
@@ -379,7 +379,7 @@ public class Game : GameWindow {
     for (int i = 0; i < photos.Count; i++) {
       Box2i box = geometry.ThumbnailBoxes[i];
       DrawTexture(photos[i].Texture, box);
-      if (i == textureIndex) {
+      if (i == photoIndex) {
         DrawBox(box, 5, Color4.Black);
         DrawBox(box, 3, Color4.White);
       }