def initEyeGaze():
"""
Function to create the _stEgControl object and init the
EyeGaze system. Exits the program if the init fails.
"""
import sys
eyegaze_control = pEyeGaze._stEgControl()
eyegaze_control.iNDataSetsInRingBuffer = 32
eyegaze_control.bTrackingActive = False
# hardcoding display resolution here; for this example only. ;)
eyegaze_control.iScreenWidthPix = 1280
eyegaze_control.iScreenHeightPix = 1024
eyegaze_control.bEgCameraDisplayActive = False
eyegaze_control.iEyeImagesScreenPos = 1
eyegaze_control.iVisionSelect = 0
# Set this reserved variable to 0
eyegaze_control.iCommType = pEyeGaze.EG_COMM_TYPE_LOCAL
result = pEyeGaze.EgInit(byref(eyegaze_control))
if result != 0:
print "Could not connect to EyeGaze. Error: ", result
sys.exit(0)
return eyegaze_control
time.sleep(0.005)
# we'll use async. mode, getting avail samples
# and then 'do something else'.
while eyegaze_control.iNPointsAvailable:
pEyeGaze.EgGetData(byref(eyegaze_control))
# assume monocular for this example only. ;)
sample_data0 = eyegaze_control.pstEgData[0]
stime = sample_data0.dGazeTimeSec
current_time = (pEyeGaze.lct_TimerRead(None) / 1000000.0
) - pEyeGaze.EgGetApplicationStartTimeSec()
delay = current_time - stime
gaze_x = sample_data0.iIGaze
gaze_y = sample_data0.iJGaze
print 'Sample Time: {0}\t{1}\t{2}\tX: {3}\tY: {4}\ti: {5}'.format(
stime, current_time, delay, gaze_x, gaze_y, samples_rx)
samples_rx += 1
if samples_rx > MAX_SAMPLES:
break
rec_end = timeit.default_timer()
# stop recording
eyegaze_control.bTrackingActive = False
# Exit the lcteg system
result = pEyeGaze.EgInit(byref(eyegaze_control))
dur = rec_end - rec_start
print 'Collected {0} samples in {1} seconds. {2} SPS'.format(
samples_rx, dur, samples_rx / dur)