def _make_melodic_orientation_system(self) -> lily.NOventLine:
orientation = lily.NOventLine([])
for tone in self.musdat["transcription"]:
if tone.pitch.is_empty:
pitch = []
markup = None
else:
instrument = globals_.INSTRUMENT_NAME2OBJECT[
globals_.PITCH2INSTRUMENT[tone.pitch.normalize()]]
pitch = [tone.pitch]
markup = attachments.MarkupOnOff("\\small {}".format(
instrument.short_name),
direction="up")
novent = lily.NOvent(
pitch=pitch,
delay=tone.delay,
duration=tone.duration,
markup_on_off=markup,
)
orientation.append(novent)
duration = orientation.duration
difference = self.duration - duration
if difference > 0:
orientation.append(
lily.NOvent(pitch=[], delay=difference, duration=difference))
return orientation
def _make_rhythmic_orientation_system(self) -> lily.NOventLine:
absolute_positions = self.transcription.spread_metrical_loop.get_all_rhythms(
)
absolute_rhythm = tuple(absolute_positions[index]
for index in self.rhythmic_orientation_indices)
is_first_attack_rest = False
if absolute_rhythm[0] != 0:
absolute_rhythm = (0, ) + absolute_rhythm
is_first_attack_rest = True
relative_rhythm = tuple(b - a for a, b in zip(
absolute_rhythm,
absolute_rhythm[1:] +
(self.transcription.spread_metrical_loop.duration, ),
))
is_first = True
orientation = lily.NOventLine([])
for rhythm in relative_rhythm:
if is_first and is_first_attack_rest:
pitch = []
is_first = False
else:
pitch = [ji.r(1, 1)]
novent = lily.NOvent(pitch=pitch, delay=rhythm, duration=rhythm)
orientation.append(novent)
return orientation
def split(
nth_event: int,
novent_line: lily.NOventLine,
*duration_of_splitted_event,
change_novent_line: bool = True,
set_n_novents2rest: int = 0,
) -> None:
n_splits = len(duration_of_splitted_event)
if n_splits < set_n_novents2rest:
set_n_novents2rest = n_splits
is_active_per_novent = tuple(
not bool(it) for it in tools.euclid(set_n_novents2rest, n_splits))
duration = sum(duration_of_splitted_event)
try:
assert duration == novent_line[nth_event].delay
except AssertionError:
msg = (
"Summed duration of each splitted event has to be as long as the duration "
)
msg += "of the event that shall be splitted."
raise ValueError(msg)
event2split = novent_line[nth_event].copy()
if change_novent_line:
del novent_line[nth_event]
else:
splitted_novents = []
for duration, is_active in zip(reversed(duration_of_splitted_event),
is_active_per_novent):
splitted_novent = event2split.copy()
splitted_novent.delay = duration
splitted_novent.duration = duration
if change_novent_line:
novent_line.insert(nth_event, splitted_novent)
else:
if not is_active:
splitted_novent = lily.NOvent(pitch=[],
delay=duration,
duration=duration)
splitted_novents.insert(0, splitted_novent)
if not change_novent_line:
return tuple(splitted_novents)
else:
for idx, is_active in enumerate(is_active_per_novent):
if not is_active:
rest(idx + nth_event, novent_line)
def harmonic_pitches(self) -> tuple:
last_pitch = self.bread[0].harmonic_pitch
start = self.bread[0].start
stop = self.bread[0].stop
melody_pitch_starts = []
if self.bread[0].does_slice_start_overlap_with_attack:
melody_pitch_starts.append(self.bread[0].start)
ns = []
for slice_ in self.bread[1:]:
if slice_.harmonic_pitch == last_pitch:
stop = slice_.stop
if slice_.does_slice_start_overlap_with_attack:
melody_pitch_starts.append(slice_.start)
else:
if last_pitch:
ns.append((
lily.NOvent(pitch=[last_pitch],
delay=start,
duration=stop),
tuple(melody_pitch_starts),
))
start = slice_.start
stop = slice_.stop
last_pitch = slice_.harmonic_pitch
melody_pitch_starts = []
if slice_.does_slice_start_overlap_with_attack:
melody_pitch_starts.append(slice_.start)
if last_pitch:
ns.append((
lily.NOvent(pitch=[last_pitch], delay=start, duration=stop),
tuple(melody_pitch_starts),
))
return tuple(ns)
def process_comprovisation_attachments(
novent_line: lily.NOventLine) -> lily.NOventLine:
new_novent_line = lily.NOventLine([])
for novent in novent_line.copy():
if globals_.ADD_COMPROVISATION and novent.optional:
# perhaps it is more likely that an optional tone get played by the musicians
# than that it won't get played.
if random.random() > 0.38:
shall_pass = True
else:
shall_pass = False
else:
shall_pass = True
if novent.optional_some_pitches:
choosen_pitches = []
for pitch_idx, pitch in enumerate(sorted(novent.pitch)):
if pitch_idx in novent.optional_some_pitches.optional_pitch_indices:
if not globals_.ADD_COMPROVISATION or random.random(
) > 0.4:
choosen_pitches.append(pitch)
else:
choosen_pitches.append(pitch)
novent.pitch = choosen_pitches
if shall_pass:
if isinstance(novent.choose, attachments.ChooseOne):
novent.pitch = [random.choice(novent.pitch)]
elif isinstance(novent.choose, attachments.Choose):
possible_choices = functools.reduce(
operator.add,
tuple(
tuple(itertools.combinations(novent.pitch, n + 1))
for n in range(len(novent.pitch))),
)
novent.pitch = list(possible_choices[random.choice(
range(len(possible_choices)))])
new_novent_line.append(novent)
else:
new_novent_line.append(
lily.NOvent(
pitch=[],
tempo=novent.tempo,
duration=novent.duration,
delay=novent.delay,
))
return new_novent_line
def postpone(nth_event: int, value: fractions.Fraction,
novent_line: lily.NOventLine) -> None:
try:
assert novent_line[nth_event].delay > value
except AssertionError:
msg = "Can't postpone event with value {} ".format(value)
msg += "because the event isn't long enough."
raise ValueError(msg)
novent_line[nth_event].delay -= value
novent_line[nth_event].duration -= value
if nth_event == 0 or novent_line[nth_event - 1].pitch:
novent_line.insert(nth_event,
lily.NOvent(pitch=[], delay=value, duration=value))
else:
novent_line[nth_event - 1].delay += value
novent_line[nth_event - 1].duration += value
def shorten(nth_event: int, value: fractions.Fraction,
novent_line: lily.NOventLine) -> None:
try:
assert novent_line[nth_event].delay > value
except AssertionError:
msg = "Can't shorten event '{}' by value '{}'. Event is too short!".format(
novent_line[nth_event], value)
raise ValueError(msg)
novent_line[nth_event].delay -= value
novent_line[nth_event].duration -= value
if nth_event + 1 != len(novent_line):
if not novent_line[nth_event + 1].pitch:
novent_line[nth_event + 1].delay += value
novent_line[nth_event + 1].duration += value
return
novent_line.insert(nth_event + 1,
lily.NOvent(pitch=[], delay=value, duration=value))
def rest(idx: int, novent_line: lily.NOventLine) -> None:
previous_is_rest = False
if idx != 0:
previous_is_rest = not novent_line[idx - 1].pitch
try:
following_is_rest = not novent_line[idx + 1].pitch
except KeyError:
following_is_rest = False
if previous_is_rest and following_is_rest:
added_duration = novent_line[idx].duration + novent_line[idx +
1].duration
novent_line[idx - 1].delay += added_duration
novent_line[idx - 1].duration += added_duration
for _ in range(2):
del novent_line[idx]
elif previous_is_rest:
added_duration = novent_line[idx].duration
novent_line[idx - 1].delay += added_duration
novent_line[idx - 1].duration += added_duration
del novent_line[idx]
elif following_is_rest:
added_duration = novent_line[idx].duration
novent_line[idx + 1].delay += added_duration
novent_line[idx + 1].duration += added_duration
del novent_line[idx]
else:
empty_event = lily.NOvent(pitch=[],
delay=fractions.Fraction(
novent_line[idx].delay))
novent_line[idx] = empty_event