def __init__(self,
prepare,
wait,
view,
flag,
wait_style_fixed=False,
print_frames=False,
suspendable=True,
pre_stimulus=None,
frame_transition=False,
vsync=True):
self._prepare_func = prepare
self._wait_times = itertools.cycle(wait)
self._view = view
self._flag = flag
self._wait_style_fixed = wait_style_fixed
self._print_frames = print_frames
self._suspendable = suspendable
self._pre_stimulus = pre_stimulus
self._frame_transition = frame_transition
self._vsync = vsync
self._logger = logging.getLogger('StimulusPainter')
self._frame_counter = FrameCounter(self._flag)
self._suspended_time = timedelta()
self._wait = self._frame_wait if frame_transition else self._time_wait
self._online_times = []
def __init__(self, prepare, wait, view, flag, wait_style_fixed=False,
print_frames=False, suspendable=True, pre_stimulus=None,
frame_transition=False, vsync=True):
self._prepare_func = prepare
self._wait_times = itertools.cycle(wait)
self._view = view
self._flag = flag
self._wait_style_fixed = wait_style_fixed
self._print_frames = print_frames
self._suspendable = suspendable
self._pre_stimulus = pre_stimulus
self._frame_transition = frame_transition
self._vsync = vsync
self._logger = logging.getLogger('StimulusPainter')
self._frame_counter = FrameCounter(self._flag)
self._suspended_time = timedelta()
self._wait = self._frame_wait if frame_transition else self._time_wait
self._online_times = []
class StimulusPainter(object):
""" Painter for a series of stimuli. """
def __init__(self, prepare, wait, view, flag, wait_style_fixed=False,
print_frames=False, suspendable=True, pre_stimulus=None,
frame_transition=False, vsync=True):
self._prepare_func = prepare
self._wait_times = itertools.cycle(wait)
self._view = view
self._flag = flag
self._wait_style_fixed = wait_style_fixed
self._print_frames = print_frames
self._suspendable = suspendable
self._pre_stimulus = pre_stimulus
self._frame_transition = frame_transition
self._vsync = vsync
self._logger = logging.getLogger('StimulusPainter')
self._frame_counter = FrameCounter(self._flag)
self._suspended_time = timedelta()
self._wait = self._frame_wait if frame_transition else self._time_wait
self._online_times = []
def run(self):
if self._print_frames or self._frame_transition:
self._frame_counter.start()
if self._prepare():
self._last_start = datetime.now()
self._frame_counter.lock()
self._present()
while self._prepare():
self._wait()
self._present()
if self._flag:
self._wait()
if self._print_frames:
self._logger.debug('Frames rendered during last sequence: %d' %
self._frame_counter.frame)
def _frame_wait(self):
next_interval = self._next_duration
while self._flag and self._frame_counter.last_interval < next_interval:
self._frame_counter.sync()
if self._print_frames:
self._logger.debug('Frames after waiting: %d' %
self._frame_counter.last_interval)
def _time_wait(self):
next_start = self._last_start + self._next_duration
while next_start - datetime.now() > timedelta():
pass
self._last_start = (next_start if self._wait_style_fixed else
datetime.now())
if self._print_frames:
self._logger.debug('Frames after waiting: %d' %
self._frame_counter.last_interval)
def _prepare(self):
if self._flag:
if self._suspendable and self._flag.suspended:
suspend_start = datetime.now()
self._flag.wait()
self._suspended_time = datetime.now() - suspend_start
return self._do_prepare()
def _present(self):
if self._print_frames:
self._logger.debug('Frames before stimulus change: %d' %
self._frame_counter.last_interval)
if self._pre_stimulus is not None:
self._pre_stimulus()
self._frame_counter.lock()
self._view.update()
@property
def _next_duration(self):
try:
nxt = self._online_times.pop(0) or self._wait_times.next()
except StopIteration:
raise Exception('No specified stimulus times available!')
return nxt(self._frame_transition) + self._suspended
@property
def _suspended(self):
t = self._suspended_time
self._suspended_time = timedelta()
return _frames(t.total_seconds()) if self._frame_transition else t
class StimulusPainter(object):
""" Painter for a series of stimuli. """
def __init__(self,
prepare,
wait,
view,
flag,
wait_style_fixed=False,
print_frames=False,
suspendable=True,
pre_stimulus=None,
frame_transition=False,
vsync=True):
self._prepare_func = prepare
self._wait_times = itertools.cycle(wait)
self._view = view
self._flag = flag
self._wait_style_fixed = wait_style_fixed
self._print_frames = print_frames
self._suspendable = suspendable
self._pre_stimulus = pre_stimulus
self._frame_transition = frame_transition
self._vsync = vsync
self._logger = logging.getLogger('StimulusPainter')
self._frame_counter = FrameCounter(self._flag)
self._suspended_time = timedelta()
self._wait = self._frame_wait if frame_transition else self._time_wait
self._online_times = []
def run(self):
if self._print_frames or self._frame_transition:
self._frame_counter.start()
if self._prepare():
self._last_start = datetime.now()
self._frame_counter.lock()
self._present()
while self._prepare():
self._wait()
self._present()
if self._flag:
self._wait()
if self._print_frames:
self._logger.debug('Frames rendered during last sequence: %d' %
self._frame_counter.frame)
def _frame_wait(self):
next_interval = self._next_duration
while self._flag and self._frame_counter.last_interval < next_interval:
self._frame_counter.sync()
if self._print_frames:
self._logger.debug('Frames after waiting: %d' %
self._frame_counter.last_interval)
def _time_wait(self):
next_start = self._last_start + self._next_duration
while next_start - datetime.now() > timedelta():
pass
self._last_start = (next_start
if self._wait_style_fixed else datetime.now())
if self._print_frames:
self._logger.debug('Frames after waiting: %d' %
self._frame_counter.last_interval)
def _prepare(self):
if self._flag:
if self._suspendable and self._flag.suspended:
suspend_start = datetime.now()
self._flag.wait()
self._suspended_time = datetime.now() - suspend_start
return self._do_prepare()
def _present(self):
if self._print_frames:
self._logger.debug('Frames before stimulus change: %d' %
self._frame_counter.last_interval)
if self._pre_stimulus is not None:
self._pre_stimulus()
self._frame_counter.lock()
self._view.update()
@property
def _next_duration(self):
try:
nxt = self._online_times.pop(0) or self._wait_times.next()
except StopIteration:
raise Exception('No specified stimulus times available!')
return nxt(self._frame_transition) + self._suspended
@property
def _suspended(self):
t = self._suspended_time
self._suspended_time = timedelta()
return _frames(t.total_seconds()) if self._frame_transition else t
