changed cross detection to silly and fixed deps

gesture_control/special_gestures.py

@@ -1,6 +1,5 @@
 import numpy as np
 
-
 class SpecialGestureDetector:
     def __init__(self, mode='geometric', model_path=None, class_names=None):
         self.mode = mode
@@ -55,7 +54,7 @@ class SpecialGestureDetector:
         l_hip = landmarks[idx['left_hip']][:2]
         r_hip = landmarks[idx['right_hip']][:2]
         nose = np.array(landmarks[idx['nose']][:2])
-        
+
         shoulder_center_y = (l_sh[1] + r_sh[1]) / 2
         hip_center_y = (l_hip[1] + r_hip[1]) / 2
         torso_height = hip_center_y - shoulder_center_y
@@ -75,11 +74,30 @@ class SpecialGestureDetector:
             v2 = wrist - elbow
             return angle_between_vectors(v1, v2)
 
+        def segments_intersect(p1, p2, p3, p4):
+            def cross(o, a, b):
+                return (a[0] - o[0]) * (b[1] - o[1]) - (a[1] - o [1])* (b[0] - o[0])
+            d1 = cross(p3, p4, p1)
+            d2 = cross(p3, p4, p2)
+            d3 = cross(p1, p2, p3)
+            d4 = cross(p1, p2, p4)
+            return (d1 * d2 < 0) and (d3 * d4 < 0)
+
+        def line_intersection(p1, p2, p3, p4):
+            d1 = p2 - p1
+            d2 = p4 -p3
+            denom = d1[0] * d2[1] - d1[1] * d2[0]
+            if abs(denom) < 1e-6:
+                return None
+            t = ((p3[0] - p1[0]) * d2[1] - (p3[1] - p1[1]) * d2[0]) / denom
+            return p1 + t * d1
+
         # ---- Вычисляем углы ----
         l_angle = elbow_angle(l_sh, l_el, l_wr)   # угол в левом локте
         r_angle = elbow_angle(r_sh, r_el, r_wr)   # угол в правом локте
 
         # ---- КРЕСТ ----
+        '''
         # 1. Оба локтя сильно согнуты (< 100°)
         elbows_bent = (l_angle < 100 and r_angle < 100)
         # 2. Левое запястье правее правого (перекрест)
@@ -91,6 +109,15 @@ class SpecialGestureDetector:
         )
 
         cross = elbows_bent and wrists_crossed and wrists_at_chest
+        if cross:
+            return 'cross'
+        '''
+        forearms_cross = segments_intersect(l_el, l_wr, r_el, r_wr)
+        intersection = line_intersection(l_el, l_wr, r_el, r_wr)
+        intersection_on_chest = False
+        if intersection is not None:
+            intersection_on_chest = (shoulder_center_y - 0.2 * torso_height < intersection[1] < hip_center_y + 0.2 * torso_height)
+        cross = forearms_cross and intersection_on_chest
         if cross:
             return 'cross'