switch 'uuid1' function to 'uuid4'

Author: simutisernestas

kf_hungarian_tracker/kf_hungarian_tracker/kf_hungarian_node.py

@@ -165,7 +165,7 @@ def callback(self, msg):
             marker_list = []
             # add current active obstacles
             for obs in filtered_obstacle_list:
-                (r, g, b) = colorsys.hsv_to_rgb((obs.msg.id.int >> 64) % 360 / 360., 1., 1.) # encode id with rgb color
+                (r, g, b) = colorsys.hsv_to_rgb(obs.msg.id.int % 360 / 360., 1., 1.) # encode id with rgb color
                 # make a cube 
                 marker = Marker()
                 marker.header = msg.header

kf_hungarian_tracker/kf_hungarian_tracker/obstacle_class.py

@@ -17,7 +17,7 @@ class ObstacleClass:
     def __init__(self, obstacle_msg, top_down, measurement_noise_cov, error_cov_post, process_noise_cov):
         '''Initialize with an Obstacle msg and an assigned id'''
         self.msg = obstacle_msg
-        self.msg.id = uuid.uuid1()
+        self.msg.id = uuid.uuid4()
         position = np.array([[obstacle_msg.position.x, obstacle_msg.position.y, obstacle_msg.position.z]]).T # shape 3*1
         velocity = np.array([[obstacle_msg.velocity.x, obstacle_msg.velocity.y, obstacle_msg.velocity.z]]).T