def split_by_durations(durations):
durations = [durationtools.Duration(_) for _ in durations]
expression = sequence()
expression = expression.flatten()
expression = expression.sum()
expression = expression.sequence()
expression = expression.split(durations, cyclic=True, overhang=True)
expression = expression.flatten()
return expression
def make_viola_ob_rhythm_specifier(rotation=None):
durations = [(1, 4), (1, 4), (3, 8), (1, 4), (3, 8)]
durations = [durationtools.Duration(_) for _ in durations]
durations = sequence(durations)
durations = durations.rotate(n=rotation)
division_expression = baca.rhythm.split_by_durations(durations)
return baca.tools.RhythmSpecifier(
division_expression=division_expression,
rhythm_maker=rhythmmakertools.NoteRhythmMaker(
division_masks=rhythmmakertools.silence([0, -1]),
),
split_at_measure_boundaries=True,
)
def make_harmonic_glissando_pitch_specifier(
start_pitch,
direction=Up,
rotation=None,
):
start_pitch = pitchtools.NumberedPitch(start_pitch)
start_pitch = start_pitch.pitch_number
pitch_numbers = akasha.materials.getato_intervals
pitch_numbers = [3 * _ for _ in pitch_numbers]
if direction is Down:
pitch_numbers = [-_ for _ in pitch_numbers]
pitch_numbers = [_ + start_pitch for _ in pitch_numbers]
pitch_numbers = sequence(pitch_numbers).rotate(n=rotation)
return baca.tools.PitchSpecifier(source=pitch_numbers)
def make_fused_tuplet_monad_rhythm_specifier(tuplet_ratio=None):
if tuplet_ratio is None:
tuplet_ratios = [(1,)]
else:
tuplet_ratios = [tuplet_ratio]
return baca.tools.RhythmSpecifier(
division_expression=sequence()
.sum()
.sequence()
,
rhythm_maker=rhythmmakertools.TupletRhythmMaker(
tie_specifier=rhythmmakertools.TieSpecifier(
use_messiaen_style_ties=True,
),
tuplet_ratios=tuplet_ratios,
),
)
def make_repeated_duration_rhythm_specifier(durations):
if isinstance(durations, durationtools.Duration):
durations = [durations]
elif isinstance(durations, tuple):
assert len(durations) == 2
durations = [durationtools.Duration(durations)]
return baca.tools.RhythmSpecifier(
division_expression=sequence()
.sum()
.sequence()
.split(durations, cyclic=True, overhang=True)
.flatten()
,
rewrite_meter=True,
rhythm_maker=rhythmmakertools.NoteRhythmMaker(
tie_specifier=rhythmmakertools.TieSpecifier(
use_messiaen_style_ties=True,
),
),
)
