def setConnectionState(self, enable):
"""
setConnectionState is used to connect ( setConnectionState(True) )
or disable ( setConnectionState(False) ) the connection of the ioHub
to the eyetracker hardware.
Note that a connection to the eye tracking hardware is automatically
openned when the ioHub Server process is started. So there is no need to
call this method at the start of your experiment. Doing so will have no
effect on the connection state.
When an eye tracker device is connected to the ioHub it is **not** also recording
eye data and sending the data to the ioHub Server. To start actual eye data
recording, use the setRecordingState(bool) or device type independent
enableEventReporting(bool) method to start and stop eye data recording.
Args:
enable (bool): True = enable the connection, False = disable the connection.
Return:
bool: indicates the current connection state to the eye tracking hardware.
"""
try:
if isinstance(enable, bool):
if enable is True and not self.isConnected():
self._eyegaze_control = pEyeGaze.initializeEyeGazeDevice(
self._display_device, self.getConfiguration())
if self._eyegaze_control is None:
print2err(
"Could not connect to EyeGaze. Exiting app..")
sys.exit(0)
if self._eyegaze_control:
return True
return False
elif enable is False and self.isConnected():
result = pEyeGaze.EgExit(byref(self._eyegaze_control))
self._eyegaze_control = None
return False
else:
return createErrorResult(
"INVALID_METHOD_ARGUMENT_VALUE",
error_message=
"The enable arguement value provided is not recognized",
method="EyeTracker.setConnectionState",
arguement='enable',
value=enable)
except Exception, e:
return createErrorResult(
"IOHUB_DEVICE_EXCEPTION",
error_message=
"An unhandled exception occurred on the ioHub Server Process.",
method="EyeTracker.setConnectionState",
arguement='enable',
value=enable,
error=e)
def setConnectionState(self, enable):
"""setConnectionState is used to connect ( setConnectionState(True) )
or disable ( setConnectionState(False) ) the connection of the ioHub to
the eyetracker hardware.
Note that a connection to the eye tracking hardware is automatically
openned when the ioHub Server process is started. So there is no need to
call this method at the start of your experiment. Doing so will have no
effect on the connection state.
When an eye tracker device is connected to the ioHub it is **not** also recording
eye data and sending the data to the ioHub Server. To start actual eye data
recording, use the setRecordingState(bool) or device type independent
enableEventReporting(bool) method to start and stop eye data recording.
Args:
enable (bool): True = enable the connection, False = disable the connection.
Return:
bool: indicates the current connection state to the eye tracking hardware.
"""
try:
if isinstance(enable, bool):
if enable is True and not self.isConnected():
self._eyegaze_control = pEyeGaze.initializeEyeGazeDevice(
self._display_device, self.getConfiguration())
if self._eyegaze_control is None:
print2err(
'Could not connect to EyeGaze. Exiting app..')
sys.exit(0)
if self._eyegaze_control:
return True
return False
elif enable is False and self.isConnected():
result = pEyeGaze.EgExit(byref(self._eyegaze_control))
self._eyegaze_control = None
return False
else:
return print2err(
'INVALID_METHOD_ARGUMENT_VALUE. ',
'EyeTracker.setConnectionState: ',
enable)
except Exception as e:
# ("IOHUB_DEVICE_EXCEPTION",error_message="An unhandled exception occurred on the ioHub Server Process.",method="EyeTracker.setConnectionState",arguement='enable', value=enable, error=e)
return printExceptionDetailsToStdErr()
def setConnectionState(self,enable):
"""
"""
try:
if isinstance(enable,bool):
if enable is True and not self.isConnected():
self._eyegaze_control=pEyeGaze.initializeEyeGazeDevice(self._display_device, self.getConfiguration())
if self._eyegaze_control is None:
ioHub.print2err("Could not connect to EyeGaze. Exiting app..")
sys.exit(0)
if self._eyegaze_control:
return True
return False
elif enable is False and self.isConnected():
result=pEyeGaze.EgExit(byref(self._eyegaze_control))
self._eyegaze_control=None
return False
else:
return createErrorResult("INVALID_METHOD_ARGUMENT_VALUE",error_message="The enable arguement value provided is not recognized",method="EyeTracker.setConnectionState",arguement='enable', value=enable)
except Exception,e:
return createErrorResult("IOHUB_DEVICE_EXCEPTION",error_message="An unhandled exception occurred on the ioHub Server Process.",method="EyeTracker.setConnectionState",arguement='enable', value=enable, error=e)
