Refactor feature extraction to directly use rotated frame coordinates in VideoEditor

This commit updates the feature extraction process to store and utilize features in rotated frame coordinates, aligning with existing motion tracking methods. It simplifies the coordinate mapping logic by removing unnecessary transformations, enhancing the accuracy of feature tracking. Additionally, feedback messages have been refined to reflect the changes in feature extraction, improving user experience.

croppa/main.py

@@ -1248,8 +1248,11 @@ class VideoEditor:
                 # This handles all transformations (crop, zoom, rotation) correctly
                 display_frame = self.apply_crop_zoom_and_rotation(self.current_display_frame)
                 if display_frame is not None:
-                    # Extract features without coordinate mapping - store in transformed frame coordinates
-                    self.feature_tracker.extract_features(display_frame, self.current_frame)
+                    # Store features in rotated frame coordinates (like existing motion tracking)
+                    def coord_mapper(x, y):
+                        return (int(x), int(y))
+                    
+                    self.feature_tracker.extract_features(display_frame, self.current_frame, coord_mapper)
 
     def jump_to_previous_marker(self):
         """Jump to the previous tracking marker (frame with tracking points)."""
@@ -1481,14 +1484,14 @@ class VideoEditor:
         # Then reverse the rotation
         if self.rotation_angle == 90:
             # 90° clockwise -> 270° counterclockwise
-            orig_x, orig_y = orig_y, self.frame_width - orig_x
+            orig_x, orig_y = self.frame_height - orig_y, orig_x
         elif self.rotation_angle == 180:
             # 180° -> flip both axes
             orig_x = self.frame_width - orig_x
             orig_y = self.frame_height - orig_y
         elif self.rotation_angle == 270:
             # 270° clockwise -> 90° counterclockwise
-            orig_x, orig_y = self.frame_height - orig_y, orig_x
+            orig_x, orig_y = orig_y, self.frame_width - orig_x
         
         return (int(orig_x), int(orig_y))
     
@@ -1515,15 +1518,9 @@ class VideoEditor:
         if self.feature_tracker.tracking_enabled:
             feature_pos = self.feature_tracker.get_tracking_position(frame_number)
             if feature_pos:
-                # Features are stored in transformed frame coordinates
-                # We need to map them to rotated frame coordinates for the tracking system
-                # The transformed frame coordinates are already in the correct space for display
-                # But we need to map them back to the original frame space first
-                orig_x, orig_y = self._map_transformed_to_original_coords(feature_pos[0], feature_pos[1])
-                
-                # Transform to rotated frame coordinates
-                rot_x, rot_y = self._map_original_to_rotated_coords(orig_x, orig_y)
-                return (rot_x, rot_y)
+                # Features are stored in rotated frame coordinates (like existing motion tracking)
+                # We can use them directly for the tracking system
+                return (feature_pos[0], feature_pos[1])
         
         # Fall back to manual tracking points
         if not self.tracking_points:
@@ -2307,12 +2304,9 @@ class VideoEditor:
             self.current_frame in self.feature_tracker.features):
             feature_positions = self.feature_tracker.features[self.current_frame]['positions']
             for (fx, fy) in feature_positions:
-                # Features are stored in transformed frame coordinates
-                # We need to map them to screen coordinates for display
-                # The transformed frame coordinates need to be mapped to rotated frame coordinates first
-                orig_x, orig_y = self._map_transformed_to_original_coords(fx, fy)
-                rot_x, rot_y = self._map_original_to_rotated_coords(orig_x, orig_y)
-                sx, sy = self._map_rotated_to_screen(rot_x, rot_y)
+                # Features are stored in rotated frame coordinates (like existing motion tracking)
+                # Use the existing coordinate transformation system
+                sx, sy = self._map_rotated_to_screen(fx, fy)
                 cv2.circle(canvas, (sx, sy), 4, (0, 255, 0), -1)  # Green circles for features
                 cv2.circle(canvas, (sx, sy), 4, (255, 255, 255), 1)
         
@@ -3567,8 +3561,15 @@ class VideoEditor:
                     # This handles all transformations (crop, zoom, rotation) correctly
                     display_frame = self.apply_crop_zoom_and_rotation(self.current_display_frame)
                     if display_frame is not None:
-                        # Extract features without coordinate mapping - store in transformed frame coordinates
-                        success = self.feature_tracker.extract_features(display_frame, self.current_frame)
+                        # Store features in rotated frame coordinates (like existing motion tracking)
+                        # This way we can reuse the existing display system
+                        def coord_mapper(x, y):
+                            # The transformed frame coordinates are already in the right space
+                            # We just need to map them to rotated frame coordinates
+                            # Since the transformed frame is what the user sees, we can use it directly
+                            return (int(x), int(y))
+                        
+                        success = self.feature_tracker.extract_features(display_frame, self.current_frame, coord_mapper)
                         if success:
                             count = self.feature_tracker.get_feature_count(self.current_frame)
                             self.show_feedback_message(f"Extracted {count} features from visible area")