eye_openness_data.py

def execute(eyetracker):
    eye_openness_data(eyetracker)


# <BeginExample>

import os
import tobii_research as tr
from time import sleep

global_eye_openness_data = None

def eye_openness_data_callback(eye_openness_data):
    global global_eye_openness_data
    global_eye_openness_data = eye_openness_data

def  eye_openness_data(eyetracker):

    global global_eye_openness_data
    clear = lambda: os.system('cls')
    
    print("Subscribing to eye openness data for eye tracker with serial number {0}.".format(eyetracker.serial_number))
    eyetracker.subscribe_to(tr.EYETRACKER_EYE_OPENNESS_DATA, eye_openness_data_callback, as_dictionary=True)
        
    i = 1    
    while i:
        i = i - 1

        # Wait while some gaze data is collected.
        sleep(1)
        
        # use if needed
        # clear()

        print("Last received eye openness package:")
        
        print("device_time_stamp        ", global_eye_openness_data["device_time_stamp"])
        print("system_time_stamp        ", global_eye_openness_data["system_time_stamp"])
        print("left_eye_validity        ", global_eye_openness_data["left_eye_validity"])
        print("left_eye_openness_value  ", global_eye_openness_data["left_eye_openness_value"])
        print("right_eye_validity       ", global_eye_openness_data["right_eye_validity"])
        print("right_eye_openness_value ", global_eye_openness_data["right_eye_openness_value"])
    
    eyetracker.unsubscribe_from(tr.EYETRACKER_EYE_OPENNESS_DATA, eye_openness_data_callback)
    print("Unsubscribed from eye openness data.")
        
# <EndExample>