hack direction

aimodel.py

@@ -214,7 +214,12 @@ def read_meter(img:Image.Image|str|Path, fl, fl_ft):
     center = circle_props.centroid[::-1]
 
     # XXX: the needle direction is from center to orign
-    if (orign - center) @ direction < 0:
+    # HACK: use needle_head instead of origin compares to center
+    needle_coordinates = np.concatenate(result.needle_polygons).reshape(-1, 2)
+    needle_length = np.linalg.norm(needle_coordinates - center,axis=1)
+    farest_idx = np.argmax(needle_length)    
+    needle_head = needle_coordinates[farest_idx]
+    if (needle_head - center) @ direction < 0:
         direction = -direction
 
     # calculate the needle theta
@@ -288,7 +293,7 @@ def more_visualization_data(meter_result:MeterResult):
     # calculate the needle head(farest point from center)
     needle_coordinates = np.concatenate(result.needle_polygons).reshape(-1, 2)
     needle_length = np.linalg.norm(needle_coordinates - center,axis=1)
-    farest_idx = np.argmax(needle_length)
+    farest_idx = np.argmax(needle_length)    
     needle_head = needle_coordinates[farest_idx]
     needle_head_length = needle_length[farest_idx]
     direction = meter_result.direction * needle_head_length