From d0ffc1bfde07d8ea68a859760626efe70547fef4 Mon Sep 17 00:00:00 2001
From: Andrea Lanfranchi <andrea.lanfranchi@gmail.com>
Date: Tue, 27 Feb 2024 11:31:41 +0100
Subject: [PATCH] Amend quirk behavior of mod operator

---
 deepface/detectors/DetectorWrapper.py | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/deepface/detectors/DetectorWrapper.py b/deepface/detectors/DetectorWrapper.py
index f05c053..5704bfa 100644
--- a/deepface/detectors/DetectorWrapper.py
+++ b/deepface/detectors/DetectorWrapper.py
@@ -164,11 +164,13 @@ def rotate_facial_area(
     """
 
     # Normalize the witdh of the angle so we don't have to
-    # worry about rotations greater than 360 degrees
-    angle = angle % 360
+    # worry about rotations greater than 360 degrees.
+    # We workaround the quirky behavior of the modulo operator
+    # for negative angle values.
+    direction = (1, -1)[angle < 0]
+    angle = abs(angle) % 360
     if angle == 0:
-        return facial_area # No rotation needed
-    direction = 1 if angle > 0 else -1
+        return facial_area
 
     # Angle in radians
     angle = angle * np.pi / 180