def chordified(timespans, templateStream=None):
r'''
Creates a score from the PitchedTimespan objects stored in this
offset-tree.
A "template" score may be used to provide measure and time-signature
information.
>>> score = corpus.parse('bwv66.6')
>>> scoreTree = score.asTimespans()
>>> chordifiedScore = tree.toStream.chordified(
... scoreTree, templateStream=score)
>>> chordifiedScore.show('text')
{0.0} <music21.stream.Measure 0 offset=0.0>
{0.0} <music21.clef.TrebleClef>
{0.0} <music21.key.Key of f# minor>
{0.0} <music21.meter.TimeSignature 4/4>
{0.0} <music21.chord.Chord A3 E4 C#5>
{0.5} <music21.chord.Chord G#3 B3 E4 B4>
{1.0} <music21.stream.Measure 1 offset=1.0>
{0.0} <music21.chord.Chord F#3 C#4 F#4 A4>
{1.0} <music21.chord.Chord G#3 B3 E4 B4>
{2.0} <music21.chord.Chord A3 E4 C#5>
{3.0} <music21.chord.Chord G#3 B3 E4 E5>
{5.0} <music21.stream.Measure 2 offset=5.0>
{0.0} <music21.chord.Chord A3 E4 C#5>
{0.5} <music21.chord.Chord C#3 E4 A4 C#5>
{1.0} <music21.chord.Chord E3 E4 G#4 B4>
{1.5} <music21.chord.Chord E3 D4 G#4 B4>
{2.0} <music21.chord.Chord A2 C#4 E4 A4>
{3.0} <music21.chord.Chord E#3 C#4 G#4 C#5>
{9.0} <music21.stream.Measure 3 offset=9.0>
{0.0} <music21.layout.SystemLayout>
{0.0} <music21.chord.Chord F#3 C#4 F#4 A4>
{0.5} <music21.chord.Chord B2 D4 G#4 B4>
{1.0} <music21.chord.Chord C#3 C#4 E#4 G#4>
{1.5} <music21.chord.Chord C#3 B3 E#4 G#4>
{2.0} <music21.chord.Chord F#2 A3 C#4 F#4>
{3.0} <music21.chord.Chord F#3 C#4 F#4 A4>
...
'''
from music21 import stream
if not isinstance(timespans, timespanTree.TimespanTree):
raise timespanTree.TimespanTreeException('Needs a TimespanTree to run')
if isinstance(templateStream, stream.Stream):
mos = templateStream.measureOffsetMap()
templateOffsets = list(mos)
templateOffsets.append(templateStream.duration.quarterLength)
if (hasattr(templateStream, 'parts')
and templateStream.iter.parts):
outputStream = templateStream.iter.parts[0].measureTemplate(fillWithRests=False)
else:
outputStream = templateStream.measureTemplate(fillWithRests=False)
timespans = timespans.copy()
timespans.splitAt(templateOffsets)
measureIndex = 0
allTimePoints = timespans.allTimePoints() + tuple(templateOffsets)
allTimePoints = sorted(set(allTimePoints))
for offset, endTime in zip(allTimePoints, allTimePoints[1:]):
while templateOffsets[1] <= offset:
templateOffsets.pop(0)
measureIndex += 1
vert = timespans.getVerticalityAt(offset)
quarterLength = endTime - offset
if (quarterLength < 0):
raise TreeException("Something is wrong with the verticality " +
"%r its endTime %f is less than its offset %f" %
(vert, endTime, offset))
element = vert.makeElement(quarterLength)
outputStream[measureIndex].append(element)
return outputStream
else:
allTimePoints = timespans.allTimePoints()
elements = []
for offset, endTime in zip(allTimePoints, allTimePoints[1:]):
vert = timespans.getVerticalityAt(offset)
quarterLength = endTime - offset
if (quarterLength < 0):
raise TreeException("Something is wrong with the verticality " +
"%r, its endTime %f is less than its offset %f" % (vert, endTime, offset))
element = vert.makeElement(quarterLength)
elements.append(element)
outputStream = stream.Score()
for element in elements:
outputStream.append(element)
return outputStream
def chordified(timespans, templateStream=None):
r'''
DEPRECATED -- DO NOT USE. Use stream.chordify() instead.
Creates a score from the PitchedTimespan objects stored in this
offset-tree.
A "template" score may be used to provide measure and time-signature
information.
>>> score = corpus.parse('bwv66.6')
>>> scoreTree = score.asTimespans()
>>> chordifiedScore = tree.toStream.chordified(
... scoreTree, templateStream=score)
>>> chordifiedScore.show('text')
{0.0} <music21.instrument.Instrument 'P1: Soprano: Instrument 1'>
{0.0} <music21.stream.Measure 0 offset=0.0>
{0.0} <music21.clef.TrebleClef>
{0.0} <music21.key.Key of f# minor>
{0.0} <music21.meter.TimeSignature 4/4>
{0.0} <music21.chord.Chord A3 E4 C#5>
{0.5} <music21.chord.Chord G#3 B3 E4 B4>
{1.0} <music21.stream.Measure 1 offset=1.0>
{0.0} <music21.chord.Chord F#3 C#4 F#4 A4>
{1.0} <music21.chord.Chord G#3 B3 E4 B4>
{2.0} <music21.chord.Chord A3 E4 C#5>
{3.0} <music21.chord.Chord G#3 B3 E4 E5>
{5.0} <music21.stream.Measure 2 offset=5.0>
{0.0} <music21.chord.Chord A3 E4 C#5>
{0.5} <music21.chord.Chord C#3 E4 A4 C#5>
{1.0} <music21.chord.Chord E3 E4 G#4 B4>
{1.5} <music21.chord.Chord E3 D4 G#4 B4>
{2.0} <music21.chord.Chord A2 C#4 E4 A4>
{3.0} <music21.chord.Chord E#3 C#4 G#4 C#5>
{9.0} <music21.stream.Measure 3 offset=9.0>
{0.0} <music21.layout.SystemLayout>
...
'''
from music21 import stream
if not isinstance(timespans, timespanTree.TimespanTree):
raise timespanTree.TimespanTreeException('Needs a TimespanTree to run')
if templateStream is not None:
mos = templateStream.measureOffsetMap()
templateOffsets = list(mos)
templateOffsets.append(templateStream.duration.quarterLength)
if (hasattr(templateStream, 'parts')
and templateStream.parts):
outputStream = templateStream.parts[0].template(fillWithRests=False,
retainVoices=False)
else:
outputStream = templateStream.template(fillWithRests=False, retainVoices=False)
timespans = timespans.copy()
timespans.splitAt(templateOffsets)
measureIndex = 0
allTimePoints = timespans.allTimePoints() + tuple(templateOffsets)
allTimePoints = sorted(set(allTimePoints))
measureList = list(outputStream.getElementsByClass('Measure'))
for offset, endTime in zip(allTimePoints, allTimePoints[1:]):
while templateOffsets[1] <= offset:
templateOffsets.pop(0)
measureIndex += 1
vert = timespans.getVerticalityAt(offset)
quarterLength = endTime - offset
if quarterLength < 0:
raise TreeException(
'Something is wrong with the verticality '
+ f'{vert!r} its endTime {endTime:f} is less than its offset {offset:f}')
element = vert.makeElement(quarterLength)
measureList[measureIndex].append(element)
return outputStream
else:
allTimePoints = timespans.allTimePoints()
elements = []
for offset, endTime in zip(allTimePoints, allTimePoints[1:]):
vert = timespans.getVerticalityAt(offset)
quarterLength = endTime - offset
if quarterLength < 0:
raise TreeException(
'Something is wrong with the verticality '
+ f'{vert!r}, its endTime {endTime:f} is less than its offset {offset:f}')
element = vert.makeElement(quarterLength)
elements.append(element)
outputStream = stream.Score()
for element in elements:
outputStream.append(element)
return outputStream
