don't hard-code aspect ratio

Program.cs

@@ -186,20 +186,20 @@ public class CropTool : ITool {
 
   // left, right, top, bottom
   (int, int, int, int) GetCrop() {
+    // FIXME: allow for unconstrained crop, 1:1, etc.
+    float aspectRatio = 1f * photo.Size.X / photo.Size.Y;
     Vector2i start = mouseDragStart;
     Vector2i end = mouseDragEnd;
     int width = Math.Abs(end.X - start.X);
     int height = Math.Abs(end.Y - start.Y);
-    int heightChange = Math.Min(height, (int) (width / CameraInfo.AspectRatio));
-    int widthChange = (int) (heightChange * CameraInfo.AspectRatio);
+    int heightChange = Math.Min(height, (int) (width / aspectRatio));
+    int widthChange = (int) (heightChange * aspectRatio);
     if (end.X < start.X) {
       widthChange *= -1;
     }
     if (end.Y < start.Y) {
       heightChange *= -1;
     }
-    // FIXME: choose the aspect ratio based on the original image aspect ratio.
-    // FIXME: allow for unconstrained crop, 1:1, etc.
     end.Y = start.Y + heightChange;
     end.X = start.X + widthChange;
     int left = Math.Min(start.X, end.X);
@@ -684,11 +684,11 @@ public class Game : GameWindow {
                            false, 5 * sizeof(float), 3 * sizeof(float));
 
     // Load photos from a directory.
-    // string[] files = Directory.GetFiles(@"c:\users\colin\desktop\photos-test\");
+    string[] files = Directory.GetFiles(@"c:\users\colin\desktop\photos-test\");
     // string[] files = Directory.GetFiles(@"c:\users\colin\pictures\photos\2023\07\14\");
     // string[] files = Directory.GetFiles(@"c:\users\colin\pictures\photos\2023\07\23\");
     // string[] files = Directory.GetFiles(@"G:\DCIM\100EOSR6\");
-    string[] files = Directory.GetFiles(@"c:\users\colin\desktop\totte-output\2023\08\29");
+    // string[] files = Directory.GetFiles(@"c:\users\colin\desktop\totte-output\2023\08\29");
     // string[] files = Directory.GetFiles(@"c:\users\colin\desktop\import");
     // string[] files = Directory.GetFiles(@"C:\Users\colin\Pictures\photos\2018\06\23");
     // string[] files = Directory.GetFiles(@"C:\Users\colin\Desktop\Germany all\104D7000");
@@ -804,8 +804,6 @@ public class Game : GameWindow {
   // $ identify -verbose image.jpg | grep Quality:
   // FIXME: don't ExportPhotos() if another export is already active.
   // FIXME: show a progress bar or something.
-  // FIXME: if there's a photo missing GPS information, copy the information
-  // from the previous photo in the export.
   private async void ExportPhotos() {
     JpegEncoder encoder = new JpegEncoder() { Quality = 100 };
     foreach (Photo p in photos) {