def retrieveSegments(self, fbRules=None, numParts=4, maxPitch=None):
'''
generates the segmentList from an fbList, including any overlayed Segments
if fbRules is None, creates a new rules.Rules() object
if maxPitch is None, uses pitch.Pitch('B5')
'''
if fbRules is None:
fbRules = rules.Rules()
if maxPitch is None:
maxPitch = pitch.Pitch('B5')
segmentList = []
bassLine = self.generateBassLine()
if len(self._overlayedParts) >= 1:
self._overlayedParts.append(bassLine)
currentMapping = checker.extractHarmonies(self._overlayedParts)
else:
currentMapping = checker.createOffsetMapping(bassLine)
allKeys = sorted(currentMapping.keys())
bassLine = bassLine.flat.notes
bassNoteIndex = 0
previousBassNote = bassLine[bassNoteIndex]
bassNote = currentMapping[allKeys[0]][-1]
previousSegment = segment.OverlayedSegment(bassNote,
bassNote.notationString,
self._fbScale, fbRules,
numParts, maxPitch)
previousSegment.quarterLength = previousBassNote.quarterLength
segmentList.append(previousSegment)
for k in allKeys[1:]:
(startTime, unused_endTime) = k
bassNote = currentMapping[k][-1]
currentSegment = segment.OverlayedSegment(bassNote,
bassNote.notationString,
self._fbScale, fbRules,
numParts, maxPitch)
for partNumber in range(1, len(currentMapping[k])):
upperPitch = currentMapping[k][partNumber - 1]
currentSegment.fbRules._partPitchLimits.append(
(partNumber, upperPitch))
if startTime == previousBassNote.offset + previousBassNote.quarterLength:
bassNoteIndex += 1
previousBassNote = bassLine[bassNoteIndex]
currentSegment.quarterLength = previousBassNote.quarterLength
else:
for partNumber in range(len(currentMapping[k]), numParts + 1):
previousSegment.fbRules._partsToCheck.append(partNumber)
# Fictitious, representative only for harmonies preserved
# with addition of melody or melodies
currentSegment.quarterLength = 0.0
segmentList.append(currentSegment)
previousSegment = currentSegment
return segmentList
def retrieveSegments(self, fbRules = None, numParts = 4, maxPitch = None):
'''
generates the segmentList from an fbList, including any overlayed Segments
if fbRules is None, creates a new rules.Rules() object
if maxPitch is None, uses pitch.Pitch('B5')
'''
if fbRules is None:
fbRules = rules.Rules()
if maxPitch is None:
maxPitch = pitch.Pitch('B5')
segmentList = []
bassLine = self.generateBassLine()
if len(self._overlayedParts) >= 1:
self._overlayedParts.append(bassLine)
currentMapping = checker.extractHarmonies(self._overlayedParts)
else:
currentMapping = checker.createOffsetMapping(bassLine)
allKeys = sorted(currentMapping.keys())
bassLine = bassLine.flat.notes
bassNoteIndex = 0
previousBassNote = bassLine[bassNoteIndex]
bassNote = currentMapping[allKeys[0]][-1]
previousSegment = segment.OverlayedSegment(bassNote, bassNote.notationString,
self._fbScale,
fbRules, numParts, maxPitch)
previousSegment.quarterLength = previousBassNote.quarterLength
segmentList.append(previousSegment)
for k in allKeys[1:]:
(startTime, unused_endTime) = k
bassNote = currentMapping[k][-1]
currentSegment = segment.OverlayedSegment(bassNote, bassNote.notationString,
self._fbScale,
fbRules, numParts, maxPitch)
for partNumber in range(1, len(currentMapping[k])):
upperPitch = currentMapping[k][partNumber-1]
currentSegment.fbRules._partPitchLimits.append((partNumber, upperPitch))
if startTime == previousBassNote.offset + previousBassNote.quarterLength:
bassNoteIndex+=1
previousBassNote = bassLine[bassNoteIndex]
currentSegment.quarterLength = previousBassNote.quarterLength
else:
for partNumber in range(len(currentMapping[k]), numParts+1):
previousSegment.fbRules._partsToCheck.append(partNumber)
# Fictitious, representative only for harmonies preserved
# with addition of melody or melodies
currentSegment.quarterLength = 0.0
segmentList.append(currentSegment)
previousSegment = currentSegment
return segmentList
