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path: root/src/argaze/utils/display_tobii_gaze.py
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#!/usr/bin/env python

import argparse
import os, time

from argaze.TobiiGlassesPro2 import *

import cv2 as cv
import numpy

def main():
    """
    Capture video camera and display gaze point
    """

    # manage arguments
    parser = argparse.ArgumentParser(description=main.__doc__.split('-')[0])
    parser.add_argument('-t', '--tobii_ip', metavar='TOBII_IP', type=str, default='192.168.1.10', help='tobii glasses ip')

    args = parser.parse_args()

    # create tobii controller
    tobii_controller = TobiiController.TobiiController(args.tobii_ip, 'ArGaze', 1)

    # calibrate tobii glasses
    #tobii_controller.calibrate()

    # create tobii data thread
    tobii_data_thread = TobiiData.TobiiDataThread(tobii_controller)
    tobii_data_thread.start()

    # create tobii video thread
    tobii_video_thread = TobiiVideo.TobiiVideoThread(tobii_controller)
    tobii_video_thread.start()

    # start tobii glasses streaming
    tobii_controller.start_streaming()

    # display loop
    try:
        
        # wait 1ms between each frame until 'Esc' key is pressed
        while cv.waitKey(1) != 27:
        
            frame, frame_width, frame_height, frame_time, pts = tobii_video_thread.read()

            # draw tobii gaze
            # TODO : sync gaze data according frame pts
            gp_data = tobii_data_thread.read_gaze_data(pts)
            if 'TIMESTAMP' in gp_data:
                pointer = (int(gp_data['X'] * frame_width), int(gp_data['Y'] * frame_height))
                cv.circle(frame, pointer, 4, (0, 255, 255), -1)
            else:
                pointer = (0, 0)
            
            # display frame
            cv.imshow('Tobii Camera Record', frame)

    # exit on 'ctrl+C' interruption
    except KeyboardInterrupt:
        pass

    # stop frame display
    cv.destroyAllWindows()

    # stop tobii objects
    tobii_video_thread.stop()
    tobii_data_thread.stop()

    tobii_controller.stop_streaming()
    tobii_controller.close()

if __name__ == '__main__':

    main()