make photo loading a separate thing from construction

Program.cs

@@ -140,21 +140,19 @@ void main() {
 
 public class Photo {
   public Texture Texture;
+  public bool Loaded = false;
+  private readonly string filename;
 
-  public Photo(string filename) {
+  public Photo(string filename, Texture unloadedTexture) {
+    this.filename = filename;
+    Texture = unloadedTexture;
+  }
+
+  public void Load() {
     Image<Rgba32> image = Image.Load<Rgba32>(filename);
-    Texture = new Texture(image);
-  }
-}
 
-public class Texture : IDisposable {
-  public int Handle;
-  public Vector2i Size;
-
-  public Texture(Image<Rgba32> image) {
-    Size = new Vector2i(image.Width, image.Height);
     Console.WriteLine("----------------------------------");
-    Console.WriteLine($"image loaded: {Size}");
+    Console.WriteLine($"image loaded: {image.Width}x{image.Height}");
 
     ExifProfile? exifs = image.Metadata.ExifProfile;
     if (exifs != null) {
@@ -164,6 +162,17 @@ public class Texture : IDisposable {
         }
       }
     }
+    Texture = new Texture(image);
+    Loaded = true;
+  }
+}
+
+public class Texture : IDisposable {
+  public int Handle;
+  public Vector2i Size;
+
+  public Texture(Image<Rgba32> image) {
+    Size = new Vector2i(image.Width, image.Height);
     byte[] pixelBytes = new byte[Size.X * Size.Y * Unsafe.SizeOf<Rgba32>()];
     image.CopyPixelDataTo(pixelBytes);
     image.Dispose();
@@ -345,9 +354,14 @@ public class Game : GameWindow {
     // Load textures from JPEGs.
     // string[] files = Directory.GetFiles(@"c:\users\colin\desktop\photos-test\");
     string[] files = Directory.GetFiles(@"c:\users\colin\pictures\photos\2023\07\14\");
-    foreach (string file in files) {
+    for (int i = 0; i < files.Count(); i++) {
+      string file = files[i];
       if (file.ToLower().EndsWith(".jpg")) {
-        photos.Add(new Photo(file));
+        Photo photo = new(file, TEXTURE_WHITE);
+        if (i == 0) {
+          photo.Load();
+        }
+        photos.Add(photo);
         if (photos.Count > 10) {
           break;
         }
@@ -388,6 +402,7 @@ public class Game : GameWindow {
     SwapBuffers();
   }
 
+  // FIXME: pull these out into a Util class and let photos be able to draw themselves?
   void DrawTexture(Texture texture, Box2i box) {
     DrawTexture(texture, box, Color4.White);
   }