def _make_ties_across_divisions(self, music):
if not self.tie_across_divisions:
return
if self.tie_across_divisions == True:
for division_one, division_two in \
sequencetools.iterate_sequence_nwise(music):
leaf_one = next(
iterate(division_one).by_class(prototype=scoretools.Leaf,
reverse=True))
leaf_two = next(
iterate(division_two).by_class(prototype=scoretools.Leaf))
leaves = [leaf_one, leaf_two]
prototype = (scoretools.Note, scoretools.Chord)
if not all(isinstance(x, prototype) for x in leaves):
continue
logical_tie_one = inspect_(leaf_one).get_logical_tie()
logical_tie_two = inspect_(leaf_two).get_logical_tie()
for tie in inspect_(leaf_one).get_spanners(spannertools.Tie):
detach(tie, leaf_one)
for tie in inspect_(leaf_two).get_spanners(spannertools.Tie):
detach(tie, leaf_two)
combined_logical_tie = logical_tie_one + logical_tie_two
attach(spannertools.Tie(), combined_logical_tie)
elif isinstance(self.tie_across_divisions, (tuple, list)):
tie_across_divisions = datastructuretools.CyclicTuple(
self.tie_across_divisions)
pairs = sequencetools.iterate_sequence_nwise(music)
for i, pair in enumerate(pairs):
indicator = tie_across_divisions[i]
if not bool(indicator):
continue
division_one, division_two = pair
leaf_one = next(
iterate(division_one).by_class(
prototype=scoretools.Leaf,
reverse=True,
))
leaf_two = next(
iterate(division_two).by_class(
prototype=scoretools.Leaf, ))
leaves = [leaf_one, leaf_two]
prototype = (scoretools.Note, scoretools.Chord)
if not all(isinstance(x, prototype) for x in leaves):
continue
logical_tie_one = inspect_(leaf_one).get_logical_tie()
logical_tie_two = inspect_(leaf_two).get_logical_tie()
for tie in inspect_(leaf_one).get_spanners(spannertools.Tie):
detach(tie, leaf_one)
for tie in inspect_(leaf_two).get_spanners(spannertools.Tie):
detach(tie, leaf_two)
combined_logical_tie = logical_tie_one + logical_tie_two
attach(spannertools.Tie(), combined_logical_tie)
else:
raise TypeError(self.tie_across_divisions)
def _make_ties_across_divisions(self, music):
if not self.tie_across_divisions:
return
if self.tie_across_divisions == True:
for division_one, division_two in \
sequencetools.iterate_sequence_nwise(music):
leaf_one = next(iterate(division_one).by_class(
prototype=scoretools.Leaf,
reverse=True))
leaf_two = next(iterate(division_two).by_class(
prototype=scoretools.Leaf))
leaves = [leaf_one, leaf_two]
prototype = (scoretools.Note, scoretools.Chord)
if not all(isinstance(x, prototype) for x in leaves):
continue
logical_tie_one = inspect_(leaf_one).get_logical_tie()
logical_tie_two = inspect_(leaf_two).get_logical_tie()
for tie in inspect_(leaf_one).get_spanners(spannertools.Tie):
detach(tie, leaf_one)
for tie in inspect_(leaf_two).get_spanners(spannertools.Tie):
detach(tie, leaf_two)
combined_logical_tie = logical_tie_one + logical_tie_two
attach(spannertools.Tie(), combined_logical_tie)
elif isinstance(self.tie_across_divisions, (tuple, list)):
tie_across_divisions = datastructuretools.CyclicTuple(
self.tie_across_divisions
)
pairs = sequencetools.iterate_sequence_nwise(music)
for i, pair in enumerate(pairs):
indicator = tie_across_divisions[i]
if not bool(indicator):
continue
division_one, division_two = pair
leaf_one = next(iterate(division_one).by_class(
prototype=scoretools.Leaf,
reverse=True,
))
leaf_two = next(iterate(division_two).by_class(
prototype=scoretools.Leaf,
))
leaves = [leaf_one, leaf_two]
prototype = (scoretools.Note, scoretools.Chord)
if not all(isinstance(x, prototype) for x in leaves):
continue
logical_tie_one = inspect_(leaf_one).get_logical_tie()
logical_tie_two = inspect_(leaf_two).get_logical_tie()
for tie in inspect_(leaf_one).get_spanners(spannertools.Tie):
detach(tie, leaf_one)
for tie in inspect_(leaf_two).get_spanners(spannertools.Tie):
detach(tie, leaf_two)
combined_logical_tie = logical_tie_one + logical_tie_two
attach(spannertools.Tie(), combined_logical_tie)
else:
raise TypeError(self.tie_across_divisions)
def _to_logical_measure_number(
self,
component,
logical_measure_number_start_offsets,
):
from abjad.tools import mathtools
from abjad.tools import sequencetools
from abjad.tools.topleveltools import inspect_
inspector = inspect_(component)
component_start_offset = inspector.get_timespan().start_offset
logical_measure_number_start_offsets = \
logical_measure_number_start_offsets[:]
logical_measure_number_start_offsets.append(mathtools.Infinity())
pairs = sequencetools.iterate_sequence_nwise(
logical_measure_number_start_offsets,
n=2,
)
for logical_measure_index, pair in enumerate(pairs):
if pair[0] <= component_start_offset < pair[-1]:
logical_measure_number = logical_measure_index + 1
return logical_measure_number
message = 'can not find logical measure number: {!r}, {!r}.'
message = message.format(
component,
logical_measure_number_start_offsets,
)
raise ValueError(message)
def _find_divisible_leaf_indices_and_subdivisions(self, q_grid):
# TODO: This should actually check for all QEvents which fall
# within the leaf's duration,
# including QEvents attached to the next leaf
# It may be prudent to actually store QEvents in two lists:
# before_offset and after_offset
indices, subdivisions = [], []
leaves = list(q_grid.leaves)
i = 0
for leaf_one, leaf_two in sequencetools.iterate_sequence_nwise(leaves):
if leaf_one.is_divisible:
succeeding_proxies = leaf_one.succeeding_q_event_proxies
preceding_proxies = leaf_two.preceding_q_event_proxies
if not preceding_proxies and \
all(proxy.offset == leaf_one.start_offset
for proxy in succeeding_proxies):
pass # proxies align perfectly with this leaf
elif preceding_proxies or succeeding_proxies:
parentage_ratios = leaf_one.parentage_ratios
leaf_subdivisions = \
self._find_leaf_subdivisions(parentage_ratios)
if leaf_subdivisions:
indices.append(i)
subdivisions.append(tuple(leaf_subdivisions))
i += 1
return indices, subdivisions
def _find_divisible_leaf_indices_and_subdivisions(self, q_grid):
# TODO: This should actually check for all QEvents which fall
# within the leaf's duration,
# including QEvents attached to the next leaf
# It may be prudent to actually store QEvents in two lists:
# before_offset and after_offset
indices, subdivisions = [], []
leaves = q_grid.leaves
i = 0
for leaf_one, leaf_two in \
sequencetools.iterate_sequence_nwise(leaves):
if (leaf_one.succeeding_q_event_proxies or
leaf_two.preceding_q_event_proxies) and \
leaf_one.is_divisible:
if len(leaf_one.q_event_proxies) == 1 and \
leaf_one.q_event_proxies[0].offset == \
leaf_one.start_offset:
pass # perfect match, don't bother to continue subdivision
else:
parentage_ratios = leaf_one.parentage_ratios
leaf_subdivisions = \
self._find_leaf_subdivisions(parentage_ratios)
if leaf_subdivisions:
indices.append(i)
subdivisions.append(tuple(leaf_subdivisions))
i += 1
return indices, subdivisions
def _interleave_source_with_code_blocks(self, tmp_directory, lines, code_blocks, output_format):
# print 'INTERLEAVE SOURCE WITH CODE BLOCKS'
image_file_names = [
x
for x in os.listdir(tmp_directory)
if (x.endswith(output_format.image_format) and x.startswith(self.image_prefix))
]
image_dict = {}
for image_file_name in image_file_names:
suffix = os.path.splitext(image_file_name.partition("-")[2])[0]
index, part, page = suffix.partition("-")
index = int(index)
if page:
page = int(page.strip("page"))
else:
page = 0
if index not in image_dict:
image_dict[index] = {}
image_dict[index][page] = image_file_name
interleaved = []
interleaved.append("\n".join(lines[: code_blocks[0].starting_line_number]))
for pair in sequencetools.iterate_sequence_nwise(code_blocks):
first_block, second_block = pair
interleaved.extend(output_format(first_block, image_dict))
interleaved.append(
"\n".join(lines[first_block.stopping_line_number + 1 : second_block.starting_line_number])
)
interleaved.extend(output_format(code_blocks[-1], image_dict))
interleaved.append("\n".join(lines[code_blocks[-1].stopping_line_number + 1 :]))
return "\n".join(interleaved)
def are_stepwise_notes(self):
r'''Is true when notes in selection are stepwise.
::
>>> selection_1.are_stepwise_notes()
True
Otherwise false:
::
>>> selection_2.are_stepwise_notes()
False
Returns true or false.
'''
from abjad.tools import scoretools
for left, right in sequencetools.iterate_sequence_nwise(
iterate(self._client).by_class(scoretools.Note)):
try:
assert not (left.written_pitch == right.written_pitch)
hdi = pitchtools.NamedInterval.from_pitch_carriers(
left, right)
assert hdi.number <= 2
except AssertionError:
return False
return True
def _notate(self,
grace_handler, attack_point_optimizer, attach_tempos):
voice = scoretools.Voice()
# generate the first
beat = self.items[0]
components = beat.q_grid(beat.beatspan)
if attach_tempos:
attachment_target = components[0]
if isinstance(attachment_target, scoretools.Container):
attachment_target = attachment_target.select_leaves()[0]
tempo = copy.copy(beat.tempo)
attach(tempo, attachment_target)
voice.extend(components)
# generate the rest pairwise, comparing tempi
for beat_one, beat_two in \
sequencetools.iterate_sequence_nwise(self.items):
components = beat_two.q_grid(beat_two.beatspan)
if (beat_two.tempo != beat_one.tempo) and attach_tempos:
attachment_target = components[0]
if isinstance(attachment_target, scoretools.Container):
attachment_target = attachment_target.select_leaves()[0]
tempo = copy.copy(beat_two.tempo)
attach(tempo, attachment_target)
voice.extend(components)
# apply logical ties, pitches, grace containers
self._notate_leaves_pairwise(voice, grace_handler)
# partition logical ties in voice
attack_point_optimizer(voice)
return voice
def are_scalar_notes(self):
r'''Is true when notes in selection are scalar.
::
>>> selection_1.are_scalar_notes()
True
Otherwise false:
::
>>> selection_2.are_scalar_notes()
False
Returns true or false.
'''
from abjad.tools import scoretools
direction_string = None
for left, right in sequencetools.iterate_sequence_nwise(
iterate(self._client).by_class(scoretools.Note)):
try:
assert not (left.written_pitch == right.written_pitch)
mdi = pitchtools.NamedInterval.from_pitch_carriers(
left, right)
assert mdi.number <= 2
if direction_string is None:
direction_string = mdi.direction_string
assert direction_string == mdi.direction_string
except AssertionError:
return False
return True
def list_nonspanning_subarrays(self):
r'''Lists nonspanning subarrays of pitch array.
.. container:: example
**Example 1.** Lists three nonspanning subarrays:
::
>>> array = pitchtools.PitchArray([
... [2, 2, 3, 1],
... [1, 2, 1, 1, 2, 1],
... [1, 1, 1, 1, 1, 1, 1, 1]])
>>> print(array)
[ ] [ ] [ ] [ ]
[ ] [ ] [ ] [ ] [ ] [ ]
[ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ]
::
>>> subarrays = array.list_nonspanning_subarrays()
>>> len(subarrays)
3
::
>>> print(subarrays[0])
[ ] [ ]
[ ] [ ] [ ]
[ ] [ ] [ ] [ ]
::
>>> print(subarrays[1])
[ ]
[ ] [ ]
[ ] [ ] [ ]
::
>>> print(subarrays[2])
[ ]
[ ]
[ ]
Returns list.
'''
unspanned_indices = []
for i in range(self.width + 1):
if not self.has_spanning_cell_over_index(i):
unspanned_indices.append(i)
array_depth = self.depth
subarrays = []
for start_column, stop_column in \
sequencetools.iterate_sequence_nwise(unspanned_indices):
upper_left_pair = (0, start_column)
lower_right_pair = (array_depth, stop_column)
subarray = self.copy_subarray(upper_left_pair, lower_right_pair)
subarrays.append(subarray)
return subarrays
def are_stepwise_notes(self):
r'''Is true when notes in selection are stepwise.
::
>>> selection_1.are_stepwise_notes()
True
Otherwise false:
::
>>> selection_2.are_stepwise_notes()
False
Returns boolean.
'''
from abjad.tools import scoretools
for left, right in sequencetools.iterate_sequence_nwise(
iterate(self._client).by_class(scoretools.Note)):
try:
assert not (left.written_pitch == right.written_pitch)
hdi = pitchtools.NamedInterval.from_pitch_carriers(left, right)
assert hdi.number <= 2
except AssertionError:
return False
return True
def _to_logical_measure_number(
self,
component,
logical_measure_number_start_offsets,
):
from abjad.tools import mathtools
from abjad.tools import sequencetools
from abjad.tools.topleveltools import inspect_
inspector = inspect_(component)
component_start_offset = inspector.get_timespan()._start_offset
logical_measure_number_start_offsets = \
logical_measure_number_start_offsets[:]
logical_measure_number_start_offsets.append(mathtools.Infinity())
pairs = sequencetools.iterate_sequence_nwise(
logical_measure_number_start_offsets,
n=2,
)
for logical_measure_index, pair in enumerate(pairs):
if pair[0] <= component_start_offset < pair[-1]:
logical_measure_number = logical_measure_index + 1
return logical_measure_number
message = 'can not find logical measure number: {!r}, {!r}.'
message = message.format(
component,
logical_measure_number_start_offsets,
)
raise ValueError(message)
def _score_pitch_set(pitch_set):
buckets = {}
for pitch in pitch_set:
if pitch.diatonic_pitch_number not in buckets:
buckets[pitch.diatonic_pitch_number] = set()
buckets[pitch.diatonic_pitch_number].add(pitch)
penalty = 0
for diatonic_pitch_number, bucket in sorted(buckets.items()):
penalty = penalty + (len(bucket) - 1)
for one, two in sequencetools.iterate_sequence_nwise(
sorted(buckets.items())):
number_1, bucket_1 = one
number_2, bucket_2 = two
if abs(number_1 - number_2) != 1:
continue
one_has_flats, one_has_sharps = False, False
for pitch in bucket_1:
if pitch.alteration_in_semitones > 0:
one_has_sharps = True
if pitch.alteration_in_semitones < 0:
one_has_flats = True
two_has_flats, two_has_sharps = False, False
for pitch in bucket_2:
if pitch.alteration_in_semitones > 0:
two_has_sharps = True
if pitch.alteration_in_semitones < 0:
two_has_flats = True
if one_has_flats and two_has_sharps:
penalty += 1
if one_has_sharps and two_has_flats:
penalty += 1
return penalty
def _shift_downbeat_q_events_to_next_q_grid(self):
beats = self.beats
for one, two in sequencetools.iterate_sequence_nwise(beats):
one_q_events = one.q_grid.next_downbeat.q_event_proxies
two_q_events = two.q_grid.leaves[0].q_event_proxies
while one_q_events:
two_q_events.append(one_q_events.pop())
def are_scalar_notes(self):
r'''Is true when notes in selection are scalar.
::
>>> selection_1.are_scalar_notes()
True
Otherwise false:
::
>>> selection_2.are_scalar_notes()
False
Returns boolean.
'''
from abjad.tools import scoretools
direction_string = None
for left, right in sequencetools.iterate_sequence_nwise(
iterate(self._client).by_class(scoretools.Note)):
try:
assert not (left.written_pitch == right.written_pitch)
mdi = pitchtools.NamedInterval.from_pitch_carriers(
left, right)
assert mdi.number <= 2
if direction_string is None:
direction_string = mdi.direction_string
assert direction_string == mdi.direction_string
except AssertionError:
return False
return True
def _find_divisible_leaf_indices_and_subdivisions(self, q_grid):
# TODO: This should actually check for all QEvents which fall
# within the leaf's duration,
# including QEvents attached to the next leaf
# It may be prudent to actually store QEvents in two lists:
# before_offset and after_offset
indices, subdivisions = [], []
leaves = list(q_grid.leaves)
i = 0
for leaf_one, leaf_two in sequencetools.iterate_sequence_nwise(leaves):
if leaf_one.is_divisible:
succeeding_proxies = leaf_one.succeeding_q_event_proxies
preceding_proxies = leaf_two.preceding_q_event_proxies
if not preceding_proxies and \
all(proxy.offset == leaf_one.start_offset
for proxy in succeeding_proxies):
pass # proxies align perfectly with this leaf
elif preceding_proxies or succeeding_proxies:
parentage_ratios = leaf_one.parentage_ratios
leaf_subdivisions = \
self._find_leaf_subdivisions(parentage_ratios)
if leaf_subdivisions:
indices.append(i)
subdivisions.append(tuple(leaf_subdivisions))
i += 1
return indices, subdivisions
def _shift_downbeat_q_events_to_next_q_grid(self):
beats = self.beats
for one, two in sequencetools.iterate_sequence_nwise(beats):
one_q_events = one.q_grid.next_downbeat.q_event_proxies
two_q_events = two.q_grid.leaves[0].q_event_proxies
while one_q_events:
two_q_events.append(one_q_events.pop())
def graph_order(self):
r'''Graph order of tree node.
Returns tuple.
'''
from abjad.tools import sequencetools
order = []
for parent, child in sequencetools.iterate_sequence_nwise(
reversed(self.improper_parentage)):
order.append(parent.index(child))
return tuple(order)
def graph_order(self):
r'''Graph order of tree node.
Returns tuple.
'''
from abjad.tools import sequencetools
order = []
for parent, child in sequencetools.iterate_sequence_nwise(
reversed(self.improper_parentage)):
order.append(parent.index(child))
return tuple(order)
def prolations(self):
r'''Prolations of rhythm tree node.
Returns tuple.
'''
prolations = [durationtools.Multiplier(1)]
improper_parentage = self.improper_parentage
for child, parent in \
sequencetools.iterate_sequence_nwise(improper_parentage):
prolations.append(durationtools.Multiplier(
parent.preprolated_duration, parent._contents_duration))
return tuple(prolations)
def prolations(self):
r'''Prolations of rhythm tree node.
Returns tuple.
'''
prolations = [durationtools.Multiplier(1)]
improper_parentage = self.improper_parentage
for child, parent in \
sequencetools.iterate_sequence_nwise(improper_parentage):
prolations.append(durationtools.Multiplier(
parent.preprolated_duration, parent._contents_duration))
return tuple(prolations)
def has_voice_crossing(self):
r'''Is true when pitch array column has voice crossing. Otherwise false.
Returns boolean.
'''
for upper, lower in \
sequencetools.iterate_sequence_nwise(self.cells):
for lower_pitch in lower.pitches:
for upper_pitch in upper.pitches:
if upper_pitch.numbered_pitch < \
lower_pitch.numbered_pitch:
return True
return False
def has_voice_crossing(self):
r'''Is true when pitch array column has voice crossing. Otherwise false.
Returns boolean.
'''
for upper, lower in \
sequencetools.iterate_sequence_nwise(self.cells):
for lower_pitch in lower.pitches:
for upper_pitch in upper.pitches:
if upper_pitch.numbered_pitch < \
lower_pitch.numbered_pitch:
return True
return False
def _get_intervals_in_subrun(subrun_source):
from abjad.tools import pitchtools
subrun_source = list(subrun_source)
result = [0]
for first, second in sequencetools.iterate_sequence_nwise(subrun_source):
first_pitch = pitchtools.get_named_pitch_from_pitch_carrier(first)
second_pitch = pitchtools.get_named_pitch_from_pitch_carrier(second)
interval = pitchtools.NumberedPitch(second_pitch).pitch_number - \
pitchtools.NumberedPitch(first_pitch).pitch_number
result.append(interval + result[-1])
result.pop(0)
return result
def _get_intervals_in_subrun(subrun_source):
from abjad.tools import pitchtools
subrun_source = list(subrun_source)
result = [0]
for first, second in sequencetools.iterate_sequence_nwise(
subrun_source):
first_pitch = pitchtools.get_named_pitch_from_pitch_carrier(first)
second_pitch = pitchtools.get_named_pitch_from_pitch_carrier(second)
interval = pitchtools.NumberedPitch(second_pitch).pitch_number - \
pitchtools.NumberedPitch(first_pitch).pitch_number
result.append(interval + result[-1])
result.pop(0)
return result
def _do_tie_across_divisions(self, divisions):
from abjad.tools import rhythmmakertools
if not self.tie_across_divisions:
return
if self.strip_ties:
return
if self.tie_consecutive_notes:
return
length = len(divisions)
tie_across_divisions = self.tie_across_divisions
if isinstance(tie_across_divisions, bool):
tie_across_divisions = [tie_across_divisions]
if not isinstance(tie_across_divisions, patterntools.Pattern):
tie_across_divisions = patterntools.Pattern.from_vector(
tie_across_divisions)
pairs = sequencetools.iterate_sequence_nwise(divisions)
rest_prototype = (scoretools.Rest, scoretools.MultimeasureRest)
for i, pair in enumerate(pairs):
if not tie_across_divisions.matches_index(i, length):
continue
division_one, division_two = pair
leaf_one = next(iterate(division_one).by_class(
prototype=scoretools.Leaf,
reverse=True,
))
leaf_two = next(iterate(division_two).by_class(
prototype=scoretools.Leaf,
))
leaves = [leaf_one, leaf_two]
if isinstance(leaf_one, rest_prototype):
continue
if isinstance(leaf_two, rest_prototype):
continue
prototype = (scoretools.Note, scoretools.Chord)
if not all(isinstance(x, prototype) for x in leaves):
continue
logical_tie_one = inspect_(leaf_one).get_logical_tie()
logical_tie_two = inspect_(leaf_two).get_logical_tie()
for tie in inspect_(leaf_one).get_spanners(spannertools.Tie):
detach(tie, leaf_one)
for tie in inspect_(leaf_two).get_spanners(spannertools.Tie):
detach(tie, leaf_two)
combined_logical_tie = logical_tie_one + logical_tie_two
tie_spanner = spannertools.Tie(
use_messiaen_style_ties=self.use_messiaen_style_ties,
)
tie_spanner._unconstrain_contiguity()
attach(tie_spanner, combined_logical_tie)
tie_spanner._constrain_contiguity()
def has_voice_crossing(self):
r'''Is true when pitch array column has voice crossing. Otherwise
false.
Returns true or false.
'''
pairs = sequencetools.iterate_sequence_nwise(self.cells)
for upper, lower in pairs:
lower_pitches = lower.pitches or ()
for lower_pitch in lower_pitches:
upper_pitches = upper.pitches or ()
for upper_pitch in upper_pitches:
if upper_pitch.numbered_pitch < lower_pitch.numbered_pitch:
return True
return False
def named_interval_class_segment(self):
r'''Named interval class segment of scale.
Returns interval-class segment.
'''
dics = []
for left, right in \
sequencetools.iterate_sequence_nwise(self, wrapped=True):
dic = left - right
dics.append(dic)
dicg = pitchtools.IntervalClassSegment(
items=dics,
item_class=pitchtools.NamedInversionEquivalentIntervalClass,
)
return dicg
def has_voice_crossing(self):
r'''Is true when pitch array column has voice crossing. Otherwise
false.
Returns true or false.
'''
pairs = sequencetools.iterate_sequence_nwise(self.cells)
for upper, lower in pairs:
lower_pitches = lower.pitches or ()
for lower_pitch in lower_pitches:
upper_pitches = upper.pitches or ()
for upper_pitch in upper_pitches:
if upper_pitch.numbered_pitch < lower_pitch.numbered_pitch:
return True
return False
def named_interval_class_segment(self):
r'''Named interval class segment of scale.
Returns interval-class segment.
'''
dics = []
for left, right in \
sequencetools.iterate_sequence_nwise(self, wrapped=True):
dic = left - right
dics.append(dic)
dicg = pitchtools.IntervalClassSegment(
items=dics,
item_class=pitchtools.NamedInversionEquivalentIntervalClass,
)
return dicg
def cumulative_sums_pairwise(sequence):
r'''Lists pairwise cumulative sums of `sequence` from ``0``.
::
>>> mathtools.cumulative_sums_pairwise([1, 2, 3, 4, 5, 6])
[(0, 1), (1, 3), (3, 6), (6, 10), (10, 15), (15, 21)]
Returns list of pairs.
'''
from abjad.tools import mathtools
from abjad.tools import sequencetools
sums = mathtools.cumulative_sums(sequence)
return list(sequencetools.iterate_sequence_nwise(sums))
def _do_tie_across_divisions(self, divisions):
if not self.tie_across_divisions:
return
if self.strip_ties:
return
if self.tie_consecutive_notes:
return
length = len(divisions)
tie_across_divisions = self.tie_across_divisions
if isinstance(tie_across_divisions, bool):
tie_across_divisions = [tie_across_divisions]
if not isinstance(tie_across_divisions, patterntools.Pattern):
tie_across_divisions = patterntools.Pattern.from_vector(
tie_across_divisions)
pairs = sequencetools.iterate_sequence_nwise(divisions)
rest_prototype = (scoretools.Rest, scoretools.MultimeasureRest)
for i, pair in enumerate(pairs):
if not tie_across_divisions.matches_index(i, length):
continue
division_one, division_two = pair
leaf_one = next(
iterate(division_one).by_class(
prototype=scoretools.Leaf,
reverse=True,
))
leaf_two = next(
iterate(division_two).by_class(prototype=scoretools.Leaf, ))
leaves = [leaf_one, leaf_two]
if isinstance(leaf_one, rest_prototype):
continue
if isinstance(leaf_two, rest_prototype):
continue
prototype = (scoretools.Note, scoretools.Chord)
if not all(isinstance(x, prototype) for x in leaves):
continue
logical_tie_one = inspect_(leaf_one).get_logical_tie()
logical_tie_two = inspect_(leaf_two).get_logical_tie()
for tie in inspect_(leaf_one).get_spanners(spannertools.Tie):
detach(tie, leaf_one)
for tie in inspect_(leaf_two).get_spanners(spannertools.Tie):
detach(tie, leaf_two)
combined_logical_tie = logical_tie_one + logical_tie_two
tie_spanner = spannertools.Tie(
use_messiaen_style_ties=self.use_messiaen_style_ties, )
tie_spanner._unconstrain_contiguity()
if tie_spanner._attachment_test_all(combined_logical_tie):
attach(tie_spanner, combined_logical_tie)
tie_spanner._constrain_contiguity()
def __init__(
self,
items=None,
item_class=None,
):
from abjad.tools import pitchtools
if isinstance(items, pitchtools.PitchSegment):
intervals = []
for one, two in sequencetools.iterate_sequence_nwise(items):
intervals.append(one - two)
items = intervals
Segment.__init__(
self,
items=items,
item_class=item_class,
)
def __init__(
self,
items=None,
item_class=None,
):
from abjad.tools import pitchtools
if isinstance(items, pitchtools.PitchSegment):
intervals = []
for one, two in sequencetools.iterate_sequence_nwise(items):
intervals.append(one - two)
items = intervals
Segment.__init__(
self,
items=items,
item_class=item_class,
)
def _get_logical_measure_start_offsets(self, component):
from abjad.tools import durationtools
from abjad.tools import indicatortools
from abjad.tools import sequencetools
from abjad.tools.topleveltools import inspect_
from abjad.tools.topleveltools import iterate
expressions = []
prototype = indicatortools.TimeSignature
components = self._iterate_entire_score(component)
for component in components:
expressions_ = component._get_indicators(
prototype,
unwrap=False,
)
expressions.extend(expressions_)
pairs = []
for expression in expressions:
inspector = inspect_(expression.component)
start_offset = inspector.get_timespan().start_offset
time_signature = expression.indicator
pair = start_offset, time_signature
pairs.append(pair)
offset_zero = durationtools.Offset(0)
default_time_signature = indicatortools.TimeSignature((4, 4))
default_pair = (offset_zero, default_time_signature)
if pairs and not pairs[0] == offset_zero:
pairs.insert(0, default_pair)
elif not pairs:
pairs = [default_pair]
pairs.sort(key=lambda x: x[0])
parentage = component._get_parentage()
score_root = parentage.root
inspector = inspect_(score_root)
score_stop_offset = inspector.get_timespan().stop_offset
dummy_last_pair = (score_stop_offset, None)
pairs.append(dummy_last_pair)
measure_start_offsets = []
pairs = sequencetools.iterate_sequence_nwise(pairs, n=2)
for current_pair, next_pair in pairs:
current_start_offset, current_time_signature = current_pair
next_start_offset, next_time_signature = next_pair
measure_start_offset = current_start_offset
while measure_start_offset < next_start_offset:
measure_start_offsets.append(measure_start_offset)
measure_start_offset += current_time_signature.duration
return measure_start_offsets
def _get_logical_measure_start_offsets(self, component):
from abjad.tools import durationtools
from abjad.tools import indicatortools
from abjad.tools import sequencetools
from abjad.tools.topleveltools import inspect_
from abjad.tools.topleveltools import iterate
expressions = []
prototype = indicatortools.TimeSignature
components = self._iterate_entire_score(component)
for component in components:
expressions_ = component._get_indicators(
prototype,
unwrap=False,
)
expressions.extend(expressions_)
pairs = []
for expression in expressions:
inspector = inspect_(expression.component)
start_offset = inspector.get_timespan().start_offset
time_signature = expression.indicator
pair = start_offset, time_signature
pairs.append(pair)
offset_zero = durationtools.Offset(0)
default_time_signature = indicatortools.TimeSignature((4, 4))
default_pair = (offset_zero, default_time_signature)
if pairs and not pairs[0] == offset_zero:
pairs.insert(0, default_pair)
elif not pairs:
pairs = [default_pair]
pairs.sort(key=lambda x: x[0])
parentage = component._get_parentage()
score_root = parentage.root
inspector = inspect_(score_root)
score_stop_offset = inspector.get_timespan().stop_offset
dummy_last_pair = (score_stop_offset, None)
pairs.append(dummy_last_pair)
measure_start_offsets = []
pairs = sequencetools.iterate_sequence_nwise(pairs, n=2)
for current_pair, next_pair in pairs:
current_start_offset, current_time_signature = current_pair
next_start_offset, next_time_signature = next_pair
measure_start_offset = current_start_offset
while measure_start_offset < next_start_offset:
measure_start_offsets.append(measure_start_offset)
measure_start_offset += current_time_signature.duration
return measure_start_offsets
def _decode_parameters(value, index):
from supriya.tools import synthdeftools
sdd = SynthDefDecompiler
parameter_values = []
parameter_count, index = sdd._decode_int_32bit(value, index)
for _ in range(parameter_count):
parameter_value, index = sdd._decode_float(value, index)
parameter_values.append(parameter_value)
parameter_count, index = sdd._decode_int_32bit(value, index)
parameter_names = []
parameter_indices = []
for _ in range(parameter_count):
parameter_name, index = sdd._decode_string(value, index)
parameter_index, index = sdd._decode_int_32bit(value, index)
parameter_names.append(parameter_name)
parameter_indices.append(parameter_index)
indexed_parameters = []
if parameter_count:
pairs = tuple(zip(parameter_indices, parameter_names))
pairs = sorted(pairs, key=lambda x: x[0])
iterator = sequencetools.iterate_sequence_nwise(pairs)
for (index_one, name_one), (index_two, name_two) in iterator:
value = parameter_values[index_one:index_two]
if len(value) == 1:
value = value[0]
parameter = synthdeftools.Parameter(
name=name_one,
value=value,
)
indexed_parameters.append((index_one, parameter))
index_one, name_one = pairs[-1]
value = parameter_values[index_one:]
if len(value) == 1:
value = value[0]
parameter = synthdeftools.Parameter(
name=name_one,
value=value,
)
indexed_parameters.append((index_one, parameter))
indexed_parameters.sort(
key=lambda x: parameter_names.index(x[1].name),
)
indexed_parameters = collections.OrderedDict(indexed_parameters)
return indexed_parameters, index
def _notate(
self,
attach_tempos=True,
attack_point_optimizer=None,
grace_handler=None,
):
voice = scoretools.Voice()
# generate the first
beat = self.items[0]
components = beat.q_grid(beat.beatspan)
if attach_tempos:
attachment_target = components[0]
leaves = select(attachment_target).by_leaf()
if isinstance(attachment_target, scoretools.Container):
attachment_target = leaves[0]
tempo = copy.copy(beat.tempo)
attach(tempo, attachment_target)
voice.extend(components)
# generate the rest pairwise, comparing tempi
for beat_one, beat_two in \
sequencetools.iterate_sequence_nwise(self.items):
components = beat_two.q_grid(beat_two.beatspan)
if (beat_two.tempo != beat_one.tempo) and attach_tempos:
attachment_target = components[0]
leaves = select(attachment_target).by_leaf()
if isinstance(attachment_target, scoretools.Container):
attachment_target = leaves[0]
tempo = copy.copy(beat_two.tempo)
attach(tempo, attachment_target)
voice.extend(components)
# apply logical ties, pitches, grace containers
self._notate_leaves(
grace_handler=grace_handler,
voice=voice,
)
# partition logical ties in voice
attack_point_optimizer(voice)
return voice
def _decode_parameters(value, index):
from supriya.tools import synthdeftools
sdd = SynthDefDecompiler
parameter_values = []
parameter_count, index = sdd._decode_int_32bit(value, index)
for _ in range(parameter_count):
parameter_value, index = sdd._decode_float(value, index)
parameter_values.append(parameter_value)
parameter_count, index = sdd._decode_int_32bit(value, index)
parameter_names = []
parameter_indices = []
for _ in range(parameter_count):
parameter_name, index = sdd._decode_string(value, index)
parameter_index, index = sdd._decode_int_32bit(value, index)
parameter_names.append(parameter_name)
parameter_indices.append(parameter_index)
indexed_parameters = []
if parameter_count:
pairs = tuple(zip(parameter_indices, parameter_names))
pairs = sorted(pairs, key=lambda x: x[0])
iterator = sequencetools.iterate_sequence_nwise(pairs)
for (index_one, name_one), (index_two, name_two) in iterator:
value = parameter_values[index_one:index_two]
if len(value) == 1:
value = value[0]
parameter = synthdeftools.Parameter(
name=name_one,
value=value,
)
indexed_parameters.append((index_one, parameter))
index_one, name_one = pairs[-1]
value = parameter_values[index_one:]
if len(value) == 1:
value = value[0]
parameter = synthdeftools.Parameter(
name=name_one,
value=value,
)
indexed_parameters.append((index_one, parameter))
indexed_parameters.sort(
key=lambda x: parameter_names.index(x[1].name), )
indexed_parameters = collections.OrderedDict(indexed_parameters)
return indexed_parameters, index
def _attachment_test_all(self, component_expression):
from abjad.tools import scoretools
from abjad.tools import sequencetools
#if not self._at_least_two_leaves(component_expression):
# return False
written_pitches = []
if isinstance(component_expression, scoretools.Component):
component_expression = [component_expression]
for component in component_expression:
if isinstance(component, scoretools.Note):
written_pitches.append(set([component.written_pitch]))
elif isinstance(component, scoretools.Chord):
written_pitches.append(set(component.written_pitches))
else:
return False
for pair in sequencetools.iterate_sequence_nwise(written_pitches):
if not set.intersection(*pair):
return False
return True
def _interleave_source_with_code_blocks(
self,
tmp_directory,
lines,
code_blocks,
output_format,
):
#print 'INTERLEAVE SOURCE WITH CODE BLOCKS'
image_file_names = [
x for x in os.listdir(tmp_directory)
if (x.endswith(output_format.image_format)
and x.startswith(self.image_prefix))
]
image_dict = {}
for image_file_name in image_file_names:
suffix = os.path.splitext(image_file_name.partition('-')[2])[0]
index, part, page = suffix.partition('-')
index = int(index)
if page:
page = int(page.strip('page'))
else:
page = 0
if index not in image_dict:
image_dict[index] = {}
image_dict[index][page] = image_file_name
interleaved = []
interleaved.append('\n'.join(
lines[:code_blocks[0].starting_line_number]))
for pair in sequencetools.iterate_sequence_nwise(code_blocks):
first_block, second_block = pair
interleaved.extend(output_format(first_block, image_dict))
interleaved.append('\n'.join(
lines[first_block.stopping_line_number +
1:second_block.starting_line_number]))
interleaved.extend(output_format(code_blocks[-1], image_dict))
interleaved.append('\n'.join(
lines[code_blocks[-1].stopping_line_number + 1:]))
return '\n'.join(interleaved)
def _make_ties_across_divisions(self, divisions):
from abjad.tools import rhythmmakertools
if not self.tie_across_divisions:
return
length = len(divisions)
tie_across_divisions = self.tie_across_divisions
if isinstance(tie_across_divisions, bool):
tie_across_divisions = [tie_across_divisions]
if not isinstance(tie_across_divisions,
rhythmmakertools.BooleanPattern):
tie_across_divisions = \
rhythmmakertools.BooleanPattern.from_sequence(
tie_across_divisions)
pairs = sequencetools.iterate_sequence_nwise(divisions)
for i, pair in enumerate(pairs):
if not tie_across_divisions.matches_index(i, length):
continue
division_one, division_two = pair
leaf_one = next(iterate(division_one).by_class(
prototype=scoretools.Leaf,
reverse=True,
))
leaf_two = next(iterate(division_two).by_class(
prototype=scoretools.Leaf,
))
leaves = [leaf_one, leaf_two]
prototype = (scoretools.Note, scoretools.Chord)
if not all(isinstance(x, prototype) for x in leaves):
continue
logical_tie_one = inspect_(leaf_one).get_logical_tie()
logical_tie_two = inspect_(leaf_two).get_logical_tie()
for tie in inspect_(leaf_one).get_spanners(spannertools.Tie):
detach(tie, leaf_one)
for tie in inspect_(leaf_two).get_spanners(spannertools.Tie):
detach(tie, leaf_two)
combined_logical_tie = logical_tie_one + logical_tie_two
tie_spanner = spannertools.Tie(
use_messiaen_style_ties=self.use_messiaen_style_ties,
)
tie_spanner._unconstrain_contiguity()
attach(tie_spanner, combined_logical_tie)
tie_spanner._constrain_contiguity()
def _notate(
self,
attach_tempos=True,
attack_point_optimizer=None,
grace_handler=None,
):
voice = scoretools.Voice()
# generate the first
q_target_measure = self.items[0]
measure = scoretools.Measure(q_target_measure.time_signature)
for beat in q_target_measure.beats:
measure.extend(beat.q_grid(beat.beatspan))
if attach_tempos:
tempo = copy.copy(q_target_measure.tempo)
attach(tempo, measure)
voice.append(measure)
# generate the rest pairwise, comparing tempi
for q_target_measure_one, q_target_measure_two in \
sequencetools.iterate_sequence_nwise(self.items):
measure = scoretools.Measure(q_target_measure_two.time_signature)
for beat in q_target_measure_two.beats:
measure.extend(beat.q_grid(beat.beatspan))
if (q_target_measure_two.tempo != q_target_measure_one.tempo) \
and attach_tempos:
tempo = copy.copy(q_target_measure_two.tempo)
attach(tempo, measure)
voice.append(measure)
# apply logical ties, pitches, grace containers
self._notate_leaves(
grace_handler=grace_handler,
voice=voice,
)
# partition logical ties in each measure
for measure in voice:
attack_point_optimizer(measure)
return voice
def _notate(
self,
attach_tempos=True,
attack_point_optimizer=None,
grace_handler=None,
):
voice = scoretools.Voice()
# generate the first
q_target_measure = self.items[0]
measure = scoretools.Measure(q_target_measure.time_signature)
for beat in q_target_measure.beats:
measure.extend(beat.q_grid(beat.beatspan))
if attach_tempos:
tempo = copy.copy(q_target_measure.tempo)
attach(tempo, measure)
voice.append(measure)
# generate the rest pairwise, comparing tempi
for q_target_measure_one, q_target_measure_two in \
sequencetools.iterate_sequence_nwise(self.items):
measure = scoretools.Measure(q_target_measure_two.time_signature)
for beat in q_target_measure_two.beats:
measure.extend(beat.q_grid(beat.beatspan))
if (q_target_measure_two.tempo != q_target_measure_one.tempo) \
and attach_tempos:
tempo = copy.copy(q_target_measure_two.tempo)
attach(tempo, measure)
voice.append(measure)
# apply logical ties, pitches, grace containers
self._notate_leaves(
grace_handler=grace_handler,
voice=voice,
)
# partition logical ties in each measure
for measure in voice:
attack_point_optimizer(measure)
return voice
def get_offsets_at_depth(depth):
if depth < len(offset_inventory):
return offset_inventory[depth]
while len(offset_inventory) <= depth:
new_offsets = []
old_offsets = offset_inventory[-1]
for first, second in \
sequencetools.iterate_sequence_nwise(old_offsets):
new_offsets.append(first)
difference = second - first
half = (first + second) / 2
if durationtools.Duration(1, 8) < difference:
new_offsets.append(half)
else:
one_quarter = (first + half) / 2
three_quarters = (half + second) / 2
new_offsets.append(one_quarter)
new_offsets.append(half)
new_offsets.append(three_quarters)
new_offsets.append(old_offsets[-1])
offset_inventory.append(tuple(new_offsets))
return offset_inventory[depth]
def is_repetition_free(self):
'''Is true when sequence is repetition-free.
.. container:: example
Is true when sequence contains no repetitions:
::
>>> Sequence((0, 1, 2, 6, 7, 8)).is_repetition_free()
True
Is true when sequence is empty:
::
>>> Sequence().is_repetition_free()
True
.. container:: example
Is false when sequence contains repetitions:
::
>>> Sequence((0, 1, 2, 2, 7, 8)).is_repetition_free()
False
Returns true or false.
'''
from abjad.tools import sequencetools
try:
pairs = sequencetools.iterate_sequence_nwise(self)
for left, right in pairs:
if left == right:
return False
return True
except TypeError:
return False
def _make_ties_across_divisions(music):
for division_one, division_two in \
sequencetools.iterate_sequence_nwise(music):
leaf_one = iterate(division_one).by_class(
prototype=scoretools.Leaf,
reverse=True,
).next()
leaf_two = iterate(division_two).by_class(
prototype=scoretools.Leaf,
).next()
leaves = [leaf_one, leaf_two]
prototype = (scoretools.Note, scoretools.Chord)
if not all(isinstance(x, prototype) for x in leaves):
continue
logical_tie_one = inspect_(leaf_one).get_logical_tie()
logical_tie_two = inspect_(leaf_two).get_logical_tie()
for tie in inspect_(leaf_one).get_spanners(spannertools.Tie):
detach(tie, leaf_one)
for tie in inspect_(leaf_two).get_spanners(spannertools.Tie):
detach(tie, leaf_two)
combined_logical_tie = logical_tie_one + logical_tie_two
attach(spannertools.Tie(), combined_logical_tie)
def is_repetition_free(self):
'''Is true when sequence is repetition-free.
.. container:: example
Is true when sequence contains no repetitions:
::
>>> Sequence((0, 1, 2, 6, 7, 8)).is_repetition_free()
True
Is true when sequence is empty:
::
>>> Sequence().is_repetition_free()
True
.. container:: example
Is false when sequence contains repetitions:
::
>>> Sequence((0, 1, 2, 2, 7, 8)).is_repetition_free()
False
Returns true or false.
'''
from abjad.tools import sequencetools
try:
pairs = sequencetools.iterate_sequence_nwise(self)
for left, right in pairs:
if left == right:
return False
return True
except TypeError:
return False
def are_stepwise_descending_notes(self):
r'''Is true when notes in selection are stepwise descending.
::
>>> selection_3 = tonalanalysistools.select(reversed(staff[:]))
::
>>> selection_3.are_stepwise_descending_notes()
True
Otherwise false:
::
>>> selection_1.are_stepwise_descending_notes()
False
::
>>> selection_2.are_stepwise_descending_notes()
False
Returns true or false.
'''
from abjad.tools import scoretools
for left, right in sequencetools.iterate_sequence_nwise(
iterate(self._client).by_class(scoretools.Note)):
try:
assert not (left.written_pitch == right.written_pitch)
mdi = pitchtools.NamedInterval.from_pitch_carriers(
left, right)
assert mdi.number == -2
except AssertionError:
return False
return True
def are_stepwise_descending_notes(self):
r'''Is true when notes in selection are stepwise descending.
::
>>> selection_3 = tonalanalysistools.select(reversed(staff[:]))
::
>>> selection_3.are_stepwise_descending_notes()
True
Otherwise false:
::
>>> selection_1.are_stepwise_descending_notes()
False
::
>>> selection_2.are_stepwise_descending_notes()
False
Returns boolean.
'''
from abjad.tools import scoretools
for left, right in sequencetools.iterate_sequence_nwise(
iterate(self._client).by_class(scoretools.Note)):
try:
assert not (left.written_pitch == right.written_pitch)
mdi = pitchtools.NamedInterval.from_pitch_carriers(
left, right)
assert mdi.number == -2
except AssertionError:
return False
return True
def get_offsets_at_depth(depth, offset_inventory):
r'''Gets offsets at `depth` in `offset_inventory`.
'''
if depth < len(offset_inventory):
return offset_inventory[depth]
while len(offset_inventory) <= depth:
new_offsets = []
old_offsets = offset_inventory[-1]
for first, second in \
sequencetools.iterate_sequence_nwise(old_offsets):
new_offsets.append(first)
difference = second - first
half = (first + second) / 2
if durationtools.Duration(1, 8) < difference:
new_offsets.append(half)
else:
one_quarter = (first + half) / 2
three_quarters = (half + second) / 2
new_offsets.append(one_quarter)
new_offsets.append(half)
new_offsets.append(three_quarters)
new_offsets.append(old_offsets[-1])
offset_inventory.append(tuple(new_offsets))
return offset_inventory[depth]
def __call__(self, logical_ties, timespan=None, offset=0):
r'''Calls handler on `logical_ties` with `offset`.
Returns none.
'''
hairpin_tokens = datastructuretools.CyclicTuple(self.hairpin_tokens)
logical_tie_groups = self._group_contiguous_logical_ties(logical_ties)
for logical_tie_group in logical_tie_groups:
pairs = sequencetools.iterate_sequence_nwise(
logical_tie_group,
n=2,
)
for i, pair in enumerate(pairs):
hairpin_token = hairpin_tokens[i]
descriptor = ' '.join([_ for _ in hairpin_token if _])
hairpin = spannertools.Hairpin(
descriptor=descriptor,
include_rests=False,
)
first_logical_tie, second_logical_tie = pair
notes = []
notes.extend(first_logical_tie)
notes.append(second_logical_tie.head)
attach(hairpin, notes)
def __graph__(self, spanner=None, **kwargs):
r'''Graphviz graph representation of container.
Returns Graphviz graph.
'''
def recurse(component, leaf_cluster):
component_node = component._as_graphviz_node()
node_mapping[component] = component_node
node_order = [component_node.name]
if isinstance(component, scoretools.Container):
graph.append(component_node)
this_leaf_cluster = documentationtools.GraphvizSubgraph(
name=component_node.name,
attributes={
'color': 'grey75',
'penwidth': 2,
},
)
all_are_leaves = True
pending_node_order = []
for child in component:
if not isinstance(child, scoretools.Leaf):
all_are_leaves = False
child_node, child_node_order = recurse(
child, this_leaf_cluster)
pending_node_order.extend(child_node_order)
edge = documentationtools.GraphvizEdge()
edge(component_node, child_node)
if all_are_leaves:
pending_node_order.reverse()
node_order.extend(pending_node_order)
if len(this_leaf_cluster):
leaf_cluster.append(this_leaf_cluster)
else:
leaf_cluster.append(component_node)
return component_node, node_order
from abjad.tools import documentationtools
from abjad.tools import scoretools
node_order = []
node_mapping = {}
graph = documentationtools.GraphvizGraph(
name='G',
attributes={
'style': 'rounded',
},
edge_attributes={
},
node_attributes={
'fontname': 'Arial',
'shape': 'none',
},
)
leaf_cluster = documentationtools.GraphvizSubgraph(name='leaves')
component_node, node_order = recurse(self, leaf_cluster)
if len(leaf_cluster) == 1:
graph.append(leaf_cluster[0])
elif len(leaf_cluster):
graph.append(leaf_cluster)
graph._node_order = node_order
if spanner:
for component_one, component_two in \
sequencetools.iterate_sequence_nwise(spanner.components):
node_one = node_mapping[component_one]
node_two = node_mapping[component_two]
edge = documentationtools.GraphvizEdge(
attributes={
'constraint': False,
'penwidth': 5,
},
)
edge(node_one, node_two)
for component in spanner.components:
node = node_mapping[component]
table = node[0]
table.attributes['border'] = 4
table.attributes['bgcolor'] = 'grey80'
if isinstance(component, Container):
for child in iterate(component).depth_first():
if child is component:
continue
node = node_mapping[child]
table = node[0]
table.attributes['bgcolor'] = 'grey80'
return graph
def __graph__(self, **kwargs):
r'''Gets Graphviz format of meter.
.. container:: example
**Example 1.** Graphs ``7/4``:
::
>>> meter = metertools.Meter((7, 4))
>>> meter_graph = meter.__graph__()
>>> graph(meter_graph) # doctest: +SKIP
.. doctest::
>>> print(str(meter_graph))
digraph G {
graph [bgcolor=transparent,
fontname=Arial,
penwidth=2,
truecolor=true];
node [fontname=Arial,
fontsize=12,
penwidth=2];
edge [penwidth=2];
node_0 [label="7/4",
shape=triangle];
node_1 [label="3/4",
shape=triangle];
node_2 [label="1/4",
shape=box];
node_3 [label="1/4",
shape=box];
node_4 [label="1/4",
shape=box];
node_5 [label="2/4",
shape=triangle];
node_6 [label="1/4",
shape=box];
node_7 [label="1/4",
shape=box];
node_8 [label="2/4",
shape=triangle];
node_9 [label="1/4",
shape=box];
node_10 [label="1/4",
shape=box];
subgraph cluster_cluster_offsets {
graph [style=rounded];
node_11_0 [color=white,
fillcolor=black,
fontcolor=white,
fontname="Arial bold",
label="{ <f_0_0> 0 | <f_0_1> +++ }",
shape=Mrecord,
style=filled];
node_11_1 [color=white,
fillcolor=black,
fontcolor=white,
fontname="Arial bold",
label="{ <f_0_0> 1/4 | <f_0_1> + }",
shape=Mrecord,
style=filled];
node_11_2 [color=white,
fillcolor=black,
fontcolor=white,
fontname="Arial bold",
label="{ <f_0_0> 1/2 | <f_0_1> + }",
shape=Mrecord,
style=filled];
node_11_3 [color=white,
fillcolor=black,
fontcolor=white,
fontname="Arial bold",
label="{ <f_0_0> 3/4 | <f_0_1> ++ }",
shape=Mrecord,
style=filled];
node_11_4 [color=white,
fillcolor=black,
fontcolor=white,
fontname="Arial bold",
label="{ <f_0_0> 1 | <f_0_1> + }",
shape=Mrecord,
style=filled];
node_11_5 [color=white,
fillcolor=black,
fontcolor=white,
fontname="Arial bold",
label="{ <f_0_0> 5/4 | <f_0_1> ++ }",
shape=Mrecord,
style=filled];
node_11_6 [color=white,
fillcolor=black,
fontcolor=white,
fontname="Arial bold",
label="{ <f_0_0> 3/2 | <f_0_1> + }",
shape=Mrecord,
style=filled];
node_11_7 [label="{ <f_0_0> 7/4 | <f_0_1> +++ }",
shape=Mrecord];
}
node_0 -> node_1;
node_0 -> node_5;
node_0 -> node_8;
node_1 -> node_2;
node_1 -> node_3;
node_1 -> node_4;
node_2 -> node_11_0 [style=dotted];
node_2 -> node_11_1 [style=dotted];
node_3 -> node_11_1 [style=dotted];
node_3 -> node_11_2 [style=dotted];
node_4 -> node_11_2 [style=dotted];
node_4 -> node_11_3 [style=dotted];
node_5 -> node_6;
node_5 -> node_7;
node_6 -> node_11_3 [style=dotted];
node_6 -> node_11_4 [style=dotted];
node_7 -> node_11_4 [style=dotted];
node_7 -> node_11_5 [style=dotted];
node_8 -> node_9;
node_8 -> node_10;
node_9 -> node_11_5 [style=dotted];
node_9 -> node_11_6 [style=dotted];
node_10 -> node_11_6 [style=dotted];
node_10 -> node_11_7 [style=dotted];
}
Returns Graphviz graph.
'''
def make_offset_node(
offset,
leaf_one=None,
leaf_two=None,
is_last=False,
):
if not is_last:
offset_node = documentationtools.GraphvizNode(
attributes={
'shape': 'Mrecord',
'style': 'filled',
'color': 'white',
'fontname': 'Arial bold',
'fontcolor': 'white',
'fillcolor': 'black',
},
)
else:
offset_node = documentationtools.GraphvizNode(
attributes={
'shape': 'Mrecord',
},
)
offset_field = documentationtools.GraphvizField(
label=str(offset),
)
weight_field = documentationtools.GraphvizField(
label='+' * offsets[offset],
)
group = documentationtools.GraphvizGroup()
group.extend([offset_field, weight_field])
offset_node.append(group)
offset_subgraph.append(offset_node)
leaf_one_node = node_mapping[leaf_one]
edge = documentationtools.GraphvizEdge(
attributes={'style': 'dotted'},
)
edge.attach(leaf_one_node, offset_node)
if leaf_two:
leaf_two_node = node_mapping[leaf_two]
edge = documentationtools.GraphvizEdge(
attributes={'style': 'dotted'},
)
edge.attach(leaf_two_node, offset_node)
from abjad.tools import metertools
offsets = metertools.MetricAccentKernel.count_offsets_in_expr(
sequencetools.flatten_sequence(self.depthwise_offset_inventory))
graph = documentationtools.GraphvizGraph(
name='G',
attributes={
'bgcolor': 'transparent',
'fontname': 'Arial',
'penwidth': 2,
'truecolor': True,
},
edge_attributes={
'penwidth': 2,
},
node_attributes={
'fontname': 'Arial',
'fontsize': 12,
'penwidth': 2,
},
)
node_mapping = {}
for node in self._root_node.nodes:
graphviz_node = documentationtools.GraphvizNode()
graphviz_node.attributes['label'] = str(node.preprolated_duration)
if isinstance(node, rhythmtreetools.RhythmTreeContainer):
graphviz_node.attributes['shape'] = 'triangle'
else:
graphviz_node.attributes['shape'] = 'box'
graph.append(graphviz_node)
node_mapping[node] = graphviz_node
if node.parent is not None:
documentationtools.GraphvizEdge().attach(
node_mapping[node.parent],
node_mapping[node],
)
leaves = self._root_node.leaves
offset = leaves[0].start_offset
offset_subgraph = documentationtools.GraphvizSubgraph(
name='cluster_offsets',
attributes={
'style': 'rounded',
},
)
graph.append(offset_subgraph)
make_offset_node(offset, leaves[0])
for one, two in sequencetools.iterate_sequence_nwise(leaves):
offset = one.stop_offset
make_offset_node(offset, one, two)
offset = leaves[-1].stop_offset
make_offset_node(offset, leaves[-1], is_last=True)
return graph
def _split(
self,
durations,
cyclic=False,
fracture_spanners=False,
tie_split_notes=True,
use_messiaen_style_ties=False,
):
from abjad.tools import pitchtools
from abjad.tools import selectiontools
from abjad.tools import scoretools
from abjad.tools import spannertools
durations = [durationtools.Duration(x) for x in durations]
if cyclic:
durations = sequencetools.repeat_sequence_to_weight(
durations, self._get_duration())
durations = [durationtools.Duration(x) for x in durations]
if sum(durations) < self._get_duration():
last_duration = self._get_duration() - sum(durations)
durations.append(last_duration)
sequencetools.truncate_sequence(
durations,
weight=self._get_duration(),
)
result = []
leaf_prolation = self._get_parentage(include_self=False).prolation
timespan = self._get_timespan()
start_offset = timespan.start_offset
for duration in durations:
new_leaf = copy.copy(self)
preprolated_duration = duration / leaf_prolation
shard = new_leaf._set_duration(
preprolated_duration,
use_messiaen_style_ties=use_messiaen_style_ties,
)
for x in shard:
if isinstance(x, scoretools.Leaf):
x_duration = x.written_duration * leaf_prolation
else:
x_duration = x.multiplied_duration * leaf_prolation
stop_offset = x_duration + start_offset
x._start_offset = start_offset
x._stop_offset = stop_offset
x._timespan = timespantools.Timespan(
start_offset=start_offset,
stop_offset=stop_offset,
)
start_offset = stop_offset
shard = [x._get_parentage().root for x in shard]
result.append(shard)
flattened_result = sequencetools.flatten_sequence(result)
flattened_result = selectiontools.SliceSelection(flattened_result)
prototype = (spannertools.Tie,)
parentage = self._get_parentage()
if parentage._get_spanners(prototype=prototype):
selection = select(flattened_result)
for component in selection:
# TODO: make top-level detach() work here
for spanner in component._get_spanners(prototype):
spanner._sever_all_components()
#detach(prototype, component)
# replace leaf with flattened result
selection = selectiontools.SliceSelection(self)
parent, start, stop = selection._get_parent_and_start_stop_indices()
if parent:
parent.__setitem__(slice(start, stop + 1), flattened_result)
else:
selection._give_dominant_spanners(flattened_result)
selection._withdraw_from_crossing_spanners()
# fracture spanners
if fracture_spanners:
first_shard = result[0]
for spanner in first_shard[-1]._get_spanners():
index = spanner._index(first_shard[-1])
spanner._fracture(index, direction=Right)
last_shard = result[-1]
for spanner in last_shard[0]._get_spanners():
index = spanner._index(last_shard[0])
spanner._fracture(index, direction=Left)
for middle_shard in result[1:-1]:
for spanner in middle_shard[0]._get_spanners():
index = spanner._index(middle_shard[0])
spanner._fracture(index, direction=Left)
for spanner in middle_shard[-1]._get_spanners():
index = spanner._index(middle_shard[-1])
spanner._fracture(index, direction=Right)
# adjust first leaf
first_leaf = flattened_result[0]
self._detach_grace_containers(kind='after')
# adjust any middle leaves
for middle_leaf in flattened_result[1:-1]:
middle_leaf._detach_grace_containers(kind='grace')
self._detach_grace_containers(kind='after')
detach(object, middle_leaf)
# adjust last leaf
last_leaf = flattened_result[-1]
last_leaf._detach_grace_containers(kind='grace')
detach(object, last_leaf)
# tie split notes, rests and chords as specified
if pitchtools.Pitch.is_pitch_carrier(self) and tie_split_notes:
flattened_result_leaves = iterate(flattened_result).by_class(
scoretools.Leaf)
# TODO: implement SliceSelection._attach_tie_spanner_to_leaves()
for leaf_pair in sequencetools.iterate_sequence_nwise(
flattened_result_leaves):
selection = selectiontools.ContiguousSelection(leaf_pair)
selection._attach_tie_spanner_to_leaf_pair(
use_messiaen_style_ties=use_messiaen_style_ties,
)
# return result
return result
def list_numbered_interval_numbers_pairwise(pitch_carriers, wrap=False):
r'''Lists numbered interval numbers pairwise between `pitch_carriers`.
::
>>> staff = Staff("c'8 d'8 e'8 f'8 g'8 a'8 b'8 c''8")
.. doctest::
>>> f(staff)
\new Staff {
c'8
d'8
e'8
f'8
g'8
a'8
b'8
c''8
}
::
>>> pitchtools.list_numbered_interval_numbers_pairwise(staff[:])
[2, 2, 1, 2, 2, 2, 1]
::
>>> pitchtools.list_numbered_interval_numbers_pairwise(
... staff[:], wrap=True)
[2, 2, 1, 2, 2, 2, 1, -12]
::
>>> notes = [
... Note("c'8"), Note("d'8"), Note("e'8"), Note("f'8"),
... Note("g'8"), Note("a'8"), Note("b'8"), Note("c''8"),
... ]
::
>>> notes.reverse()
::
>>> pitchtools.list_numbered_interval_numbers_pairwise(notes)
[-1, -2, -2, -2, -1, -2, -2]
::
>>> pitchtools.list_numbered_interval_numbers_pairwise(
... notes, wrap=True)
[-1, -2, -2, -2, -1, -2, -2, 12]
When ``wrap = False`` do not return
``pitch_carriers[-1] - pitch_carriers[0]`` as last in series.
When ``wrap = True`` do return ``pitch_carriers[-1] - pitch_carriers[0]``
as last in series.
Returns list.
'''
from abjad.tools import pitchtools
result = []
if len(pitch_carriers) == 0:
return result
elif len(pitch_carriers) == 1:
if pitchtools.Pitch.is_pitch_carrier(pitch_carriers[0]):
return result
else:
message = 'must be pitch, not, note-head or chord.'
raise TypeError(message)
pairs = sequencetools.iterate_sequence_nwise(pitch_carriers, wrapped=wrap)
pairs = list(pairs)
for first_carrier, second_carrier in pairs:
first_pitch = pitchtools.NamedPitch.from_pitch_carrier(first_carrier)
second_pitch = pitchtools.NamedPitch.from_pitch_carrier(second_carrier)
signed_interval = \
pitchtools.NumberedPitch(second_pitch).pitch_number - \
pitchtools.NumberedPitch(first_pitch).pitch_number
result.append(signed_interval)
return result
def _apply_spanners(self, leaves):
spanner_references = {
spannertools.Beam: None,
spannertools.Slur: None,
}
first_leaf = leaves[0]
for leaf, next_leaf in \
sequencetools.iterate_sequence_nwise(leaves, wrapped=True):
span_events = self._get_span_events(leaf)
for current_class, directions in span_events.items():
starting, stopping = [], []
for direction in directions:
if direction == Left:
starting.append(Left)
else:
stopping.append(Right)
# apply undirected events immediately,
# and do not maintain a reference to them
if current_class is spannertools.Tie:
if next_leaf is first_leaf:
message = 'unterminated {} at {}.'
message = message.format(current_class.__name__, leaf)
raise Exception(message)
previous_tie = [
x for x in leaf._get_spanners()
if isinstance(x, spannertools.Tie)
]
if previous_tie:
previous_tie[0]._append(next_leaf)
else:
tie = spannertools.Tie()
attach(tie, (leaf, next_leaf))
elif current_class is spannertools.Beam:
# A beam may begin and end on the same leaf
# but only one beam spanner may cover any given leaf,
# and starting events are processed before ending ones
for _ in starting:
if spanner_references[current_class] is not None:
message = 'already have beam.'
raise Exception(message)
else:
spanner_references[current_class] = current_class()
for _ in stopping:
if spanner_references[current_class] is not None:
spanner_references[current_class]._append(leaf)
spanner_references[current_class] = None
elif current_class is spannertools.Slur:
# Slurs process stop events before start events,
# they must contain more than one leaf,
# but they can stop on a leaf and start on the same leaf.
for _ in stopping:
if spanner_references[current_class] is not None:
spanner_references[current_class]._append(leaf)
spanner_references[current_class] = None
else:
message = 'can not end: {}.'
message = message.format(current_class.__name)
raise Exception(message)
for _ in starting:
if spanner_references[current_class] is None:
spanner_references[current_class] = current_class()
else:
message = 'already have: {}.'
message = message.format(current_class.__name)
raise Exception(message)
# append leaf to all tracked spanners,
for current_class, instance in spanner_references.items():
if instance is not None:
instance._append(leaf)
# check for unterminated spanners
for current_class, instance in spanner_references.items():
if instance is not None:
message = 'unterminated {}.'
message = message.format(current_class.__name__)
raise Exception(message)