Make shift right click put down track point on the position of the previous track point

croppa/main.py

@@ -1613,7 +1613,7 @@ class VideoEditor:
         return
 
     def _get_previous_tracking_point(self):
-        """Get the tracking point from the previous frame that has tracking points."""
+        """Get the tracking point from the previous frame that has tracking points (like jump_to_previous_marker)."""
         if self.is_image_mode or not self.tracking_points:
             return None
 
@@ -1621,12 +1621,16 @@ class VideoEditor:
         if not tracking_frames:
             return None
 
-        # Find the last frame with tracking points that's before current frame
+        current = self.current_frame
-        prev_frames = [f for f in tracking_frames if f < self.current_frame]
+        candidates = [f for f in tracking_frames if f < current]
-        if not prev_frames:
-            return None
 
-        prev_frame = max(prev_frames)
+        if candidates:
+            # Use the most recent frame before current (like jump_to_previous_marker)
+            prev_frame = candidates[-1]
+            return prev_frame, self.tracking_points[prev_frame]
+        else:
+            # If no previous frames, use the first frame with tracking points
+            prev_frame = tracking_frames[0]
             return prev_frame, self.tracking_points[prev_frame]
     
     def _get_next_tracking_point(self):
@@ -3846,6 +3850,7 @@ class VideoEditor:
                 self.toggle_interesting_region_selection()
                 self.display_needs_update = True
 
+        
         # Handle right-click for tracking points (no modifiers)
         if event == cv2.EVENT_RBUTTONDOWN and not (flags & (cv2.EVENT_FLAG_CTRLKEY | cv2.EVENT_FLAG_SHIFTKEY)):
             if not self.is_image_mode:
@@ -4967,6 +4972,14 @@ class VideoEditor:
                 self.frame_difference_threshold = min(100.0, self.frame_difference_threshold + 1.0)
                 print(f"Frame difference threshold: {self.frame_difference_threshold:.1f}%")
                 self.show_feedback_message(f"Threshold: {self.frame_difference_threshold:.1f}%")
+            elif key == ord(")"):  # Shift+9 - Decrease frame difference threshold by 10 percentage points
+                self.frame_difference_threshold = max(1.0, self.frame_difference_threshold - 10.0)
+                print(f"Frame difference threshold: {self.frame_difference_threshold:.1f}% (-10pp)")
+                self.show_feedback_message(f"Threshold: {self.frame_difference_threshold:.1f}% (-10pp)")
+            elif key == ord("="):  # Shift+0 - Increase frame difference threshold by 10 percentage points
+                self.frame_difference_threshold = min(100.0, self.frame_difference_threshold + 10.0)
+                print(f"Frame difference threshold: {self.frame_difference_threshold:.1f}% (+10pp)")
+                self.show_feedback_message(f"Threshold: {self.frame_difference_threshold:.1f}% (+10pp)")
             elif key == ord("7"):  # 7 - Decrease frame difference gap
                 self.frame_difference_gap = max(1, self.frame_difference_gap - 1)
                 print(f"Frame difference gap: {self.frame_difference_gap} frames")
@@ -4975,6 +4988,14 @@ class VideoEditor:
                 self.frame_difference_gap = self.frame_difference_gap + 1
                 print(f"Frame difference gap: {self.frame_difference_gap} frames")
                 self.show_feedback_message(f"Gap: {self.frame_difference_gap} frames")
+            elif key == ord("/"):  # Shift+7 - Decrease frame difference gap by 60 frames
+                self.frame_difference_gap = max(1, self.frame_difference_gap - 60)
+                print(f"Frame difference gap: {self.frame_difference_gap} frames (-60)")
+                self.show_feedback_message(f"Gap: {self.frame_difference_gap} frames (-60)")
+            elif key == ord("("):  # Shift+8 - Increase frame difference gap by 60 frames
+                self.frame_difference_gap = self.frame_difference_gap + 60
+                print(f"Frame difference gap: {self.frame_difference_gap} frames (+60)")
+                self.show_feedback_message(f"Gap: {self.frame_difference_gap} frames (+60)")
             elif key == ord("N"):
                 if len(self.video_files) > 1:
                     self.previous_video()
@@ -5090,7 +5111,19 @@ class VideoEditor:
                 self.feature_tracker.clear_features()
                 self.show_feedback_message("Feature tracking data cleared")
                 self.save_state()
-            elif key == ord("H"):
+            elif key == ord("Z"):
+                # Switch detector type (SIFT -> ORB -> SIFT) - SURF not available
+                current_type = self.feature_tracker.detector_type
+                if current_type == 'SIFT':
+                    new_type = 'ORB'
+                elif current_type == 'ORB':
+                    new_type = 'SIFT'
+                else:
+                    new_type = 'SIFT'
+                self.feature_tracker.set_detector_type(new_type)
+                self.show_feedback_message(f"Detector switched to {new_type}")
+                self.save_state()
+            elif key == ord("z"):
                 # Switch detector type (SIFT -> ORB -> SIFT) - SURF not available
                 current_type = self.feature_tracker.detector_type
                 if current_type == 'SIFT':