def make_desordre_cell(pitches):
'''The function constructs and returns a *Désordre cell*.
`pitches` is a list of numbers or, more generally, pitch tokens.
'''
notes = [scoretools.Note(pitch, (1, 8)) for pitch in pitches]
beam = spannertools.Beam()
attach(beam, notes)
slur = spannertools.Slur()
attach(slur, notes)
clef = indicatortools.Dynamic('f')
attach(clef, notes[0])
dynamic = indicatortools.Dynamic('p')
attach(dynamic, notes[1])
# make the lower voice
lower_voice = scoretools.Voice(notes)
lower_voice.name = 'RH Lower Voice'
command = indicatortools.LilyPondCommand('voiceTwo')
attach(command, lower_voice)
n = int(math.ceil(len(pitches) / 2.))
chord = scoretools.Chord([pitches[0], pitches[0] + 12], (n, 8))
articulation = indicatortools.Articulation('>')
attach(articulation, chord)
# make the upper voice
upper_voice = scoretools.Voice([chord])
upper_voice.name = 'RH Upper Voice'
command = indicatortools.LilyPondCommand('voiceOne')
attach(command, upper_voice)
# combine them together
container = scoretools.Container([lower_voice, upper_voice])
container.is_simultaneous = True
# make all 1/8 beats breakable
leaves = select(lower_voice).by_leaf()
for leaf in leaves[:-1]:
bar_line = indicatortools.BarLine('')
attach(bar_line, leaf)
return container
def make_spanner_score_09(self):
r'''Make 200-note voice with (vanilla) beam spanner on every 100 notes.
::
2.12 (r9724) initialization: 249,339 function calls
2.12 (r9703) LilyPond format: 121,497 function calls
2.12 (r9724) LilyPond format: 128,494 function calls
'''
from abjad.tools import scoretools
from abjad.tools import sequencetools
from abjad.tools import spannertools
from abjad.tools import topleveltools
voice = scoretools.Voice(200 * scoretools.Note("c'16"))
for part in sequencetools.partition_sequence_by_counts(
voice[:],
[100],
cyclic=True,
):
beam = spannertools.Beam()
topleveltools.attach(beam, part)
return voice