def getMeasureByPosition(self, position):
if position.staffIndex is None or position.measureIndex is None:
raise BadTimeError()
if not (0 <= position.staffIndex < len(self._staffs)):
raise BadTimeError()
staff = self.getStaffByIndex(position.staffIndex)
if not (0 <= position.measureIndex < staff.numMeasures()):
raise BadTimeError()
return staff[position.measureIndex]
def _staffContainingMeasure(self, index):
measuresSoFar = 0
for staff in self.iterStaffs():
if measuresSoFar <= index < measuresSoFar + staff.numMeasures():
return staff, index - measuresSoFar
measuresSoFar += staff.numMeasures()
raise BadTimeError()
def nthVisibleLineIndex(self, staffIndex, lineIndex):
count = -1
staff = self.getStaffByIndex(staffIndex)
for lineNum, drum in enumerate(self.drumKit):
if (drum.locked or self.scoreData.emptyLinesVisible
or staff.lineIsVisible(lineNum)):
count += 1
if count == lineIndex:
return lineNum
if count == -1 and lineIndex == 0:
return 0
raise BadTimeError(staffIndex)
def measureIndexToPosition(self, index):
staffIndex = 0
staff = self.getStaffByIndex(0)
while index >= staff.numMeasures():
index -= staff.numMeasures()
staffIndex += 1
if staffIndex == self.numStaffs():
break
staff = self.getStaffByIndex(staffIndex)
if staffIndex == self.numStaffs():
raise BadTimeError(index)
return NotePosition(staffIndex=staffIndex, measureIndex=index)
def iterMeasuresInSection(self, sectionIndex):
if not (0 <= sectionIndex < self.numSections()):
raise BadTimeError()
thisSection = 0
inSection = (thisSection == sectionIndex)
for measure in self.iterMeasures():
if inSection:
yield measure
if measure.isSectionEnd():
break
if measure.isSectionEnd():
thisSection += 1
inSection = (thisSection == sectionIndex)
def nextMeasure(self, position):
self._checkStaffIndex(position.staffIndex)
staff = self.getStaffByIndex(position.staffIndex)
if not (0 <= position.measureIndex < staff.numMeasures()):
raise BadTimeError()
position = position.makeMeasurePosition()
position.measureIndex += 1
if position.measureIndex == staff.numMeasures():
position.staffIndex += 1
if position.staffIndex == self.numStaffs():
position.staffIndex = None
position.measureIndex = None
else:
position.measureIndex = 0
return position
def _isValidPosition(self, position, afterOk=False):
if not (0 <= position.measureIndex < self.numMeasures()):
if not (afterOk and position.measureIndex == self.numMeasures()):
raise BadTimeError(position)
def noteAt(self, noteTime, drumIndex):
self._checkValidNoteTime(noteTime)
if drumIndex < 0:
raise BadTimeError()
return self._notes.getNote(noteTime, drumIndex)
def _checkValidNoteTime(self, noteTime):
if not (0 <= noteTime < len(self)):
raise BadTimeError(noteTime)
def _checkMeasureIndex(self, index, endOk=False):
if not (0 <= index < self.numMeasures()):
if not (endOk and index == self.numMeasures()):
raise BadTimeError()
def _checkDrumIndex(self, index):
if not (0 <= index < len(self.drumKit)):
raise BadTimeError()
def _checkStaffIndex(self, index):
if not (0 <= index < self.numStaffs()):
raise BadTimeError()