Create gesture_logic.py

gesture_logic.py

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+def get_finger_states(hand_landmarks):
+    """
+    Returns a list like [1, 1, 0, 0, 1]
+    thumb, index, middle, ring, pinky
+    """
+
+    finger_tips = [4, 8, 12, 16, 20]
+    finger_bases = [2, 6, 10, 14, 18]
+
+    states = []
+
+    # Thumb (special case)
+    if hand_landmarks.landmark[4].x > hand_landmarks.landmark[3].x:
+        states.append(1)
+    else:
+        states.append(0)
+
+    # Other fingers
+    for tip, base in zip(finger_tips[1:], finger_bases[1:]):
+        if hand_landmarks.landmark[tip].y < hand_landmarks.landmark[base].y:
+            states.append(1)
+        else:
+            states.append(0)
+
+    return states