def get_trigger(self, index: int, cache: "PerFrameCache") -> int:
radius = self._tsamp
wave = self._wave.with_offset(-cache.mean)
if not 0 <= index < wave.nsamp:
return index
if wave[index] < 0:
direction = 1
test = lambda a: a >= 0
elif wave[index] > 0:
direction = -1
test = lambda a: a <= 0
else: # self._wave[sample] == 0
return index + 1
data = wave[index:index + direction * (radius + 1):direction]
# TODO remove unnecessary complexity, since diameter is probably under 10.
intercepts = find(data, test)
try:
(delta, ), value = next(intercepts)
return index + (delta * direction) + int(value <= 0)
except StopIteration: # No zero-intercepts
return index + (direction * radius)
# noinspection PyUnreachableCode
"""
def get_trigger(self, index: int, cache: "PerFrameCache") -> int:
# 'cache' is unused.
tsamp = self._tsamp
if not 0 <= index < self._wave.nsamp:
return index
if self._wave[index] < 0:
direction = 1
test = lambda a: a >= 0
elif self._wave[index] > 0:
direction = -1
test = lambda a: a <= 0
else: # self._wave[sample] == 0
return index + 1
data = self._wave[index:index + (direction * tsamp):direction]
intercepts = find(data, test)
try:
(delta, ), value = next(intercepts)
return index + (delta * direction) + int(value <= 0)
except StopIteration: # No zero-intercepts
return index
# noinspection PyUnreachableCode
"""