use a Vector2i for Texture size

Program.cs

@@ -3,8 +3,8 @@ using OpenTK.Mathematics;
 using OpenTK.Windowing.Common;
 using OpenTK.Windowing.Desktop;
 using OpenTK.Windowing.GraphicsLibraryFramework;
-// https://docs.sixlabors.com/api/ImageSharp/SixLabors.ImageSharp.Image.html
 using System.Runtime.CompilerServices;
+// https://docs.sixlabors.com/api/ImageSharp/SixLabors.ImageSharp.Image.html
 using Image = SixLabors.ImageSharp.Image;
 
 namespace SemiColinGames;
@@ -138,26 +138,23 @@ void main() {
 
 public class Texture : IDisposable {
   public int Handle;
-  // FIXME: use a Vector2i for dimensions.
-  public int Width;
-  public int Height;
+  public Vector2i Size;
 
   public Texture(Image<Rgba32> image) {
-    Width = image.Width;
-    Height = image.Height;
-    Console.WriteLine($"image loaded: {Width}x{Height}");
+    Size = new Vector2i(image.Width, image.Height);
+    Console.WriteLine($"image loaded: {Size}");
 
     //foreach (IExifValue exif in image.Metadata.ExifProfile.Values) {
     //  Console.WriteLine($"{exif.Tag} : {exif.GetValue()}");
     //}
-    byte[] pixelBytes = new byte[Width * Height * Unsafe.SizeOf<Rgba32>()];
+    byte[] pixelBytes = new byte[Size.X * Size.Y * Unsafe.SizeOf<Rgba32>()];
     image.CopyPixelDataTo(pixelBytes);
     image.Dispose();
 
     Handle = GL.GenTexture();
     GL.ActiveTexture(TextureUnit.Texture0);
     GL.BindTexture(TextureTarget.Texture2D, Handle);
-    GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.Rgba, image.Width, image.Height, 0, PixelFormat.Rgba, PixelType.UnsignedByte, pixelBytes);
+    GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.Rgba, Size.X, Size.Y, 0, PixelFormat.Rgba, PixelType.UnsignedByte, pixelBytes);
     GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int) TextureMinFilter.LinearMipmapLinear); // FIXME: is this right?
     GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int) TextureMagFilter.Nearest);
     GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapS, (int) TextureWrapMode.ClampToBorder);
@@ -321,11 +318,11 @@ public class Game : GameWindow {
     Texture active = textures[textureIndex];
 
     // FIXME: make a function for scaling & centering one box on another.
-    double scaleX = 1.0 * geometry.PhotoBox.Size.X / active.Width;
-    double scaleY = 1.0 * geometry.PhotoBox.Size.Y / active.Height;
+    double scaleX = 1.0 * geometry.PhotoBox.Size.X / active.Size.X;
+    double scaleY = 1.0 * geometry.PhotoBox.Size.Y / active.Size.Y;
     double scale = Math.Min(scaleX, scaleY);
-    int renderWidth = (int) (active.Width * scale);
-    int renderHeight = (int) (active.Height * scale);
+    int renderWidth = (int) (active.Size.X * scale);
+    int renderHeight = (int) (active.Size.Y * scale);
     Box2i photoBox = Util.makeBox((int) geometry.PhotoBox.Center.X - renderWidth / 2, (int) geometry.PhotoBox.Center.Y - renderHeight / 2, renderWidth, renderHeight);
     DrawTexture(active, photoBox); 
     for (int i = 0; i < textures.Count; i++) {