def test_C_Natural_variable_cue_center(self):
print('test_C_Natural_variable_cue_center: C-Natural, variable cue')
domain_tonality = Tonality.create(ModalityType.NaturalMinor,
DiatonicToneCache.get_tone('C'))
answers = [['C', 'Bb', 'A', 'G', 'F', 'E', 'D'],
['E', 'D', 'C#', 'B', 'A', 'G#', 'F#'],
['Gb', 'Fb', 'Eb', 'Db', 'Cb', 'Bb', 'Ab'],
['Bb', 'Ab', 'G', 'F', 'Eb', 'D', 'C'],
['D', 'C', 'B', 'A', 'G', 'F#', 'E'],
['Fb', 'Ebb', 'Db', 'Cb', 'Bbb', 'Ab', 'Gb'],
['Ab', 'Gb', 'F', 'Eb', 'Db', 'C', 'Bb']]
index = 0
for cue_tone in domain_tonality.annotation[:-1]:
f = ChromaticTonalReflectionFunction(domain_tonality, cue_tone,
FlipType.CenterTone)
TestChromaticTonalReflectionFunction.print_map(
domain_tonality, f, cue_tone.diatonic_symbol)
for tone, i in zip(domain_tonality.annotation[:-1], range(0, 6)):
assert f[tone] == DiatonicToneCache.get_tone(answers[index][i]), \
'f[{0}]={1} != {2}'.format(tone.diatonic_symbol, f[tone].diatonic_symbol,
DiatonicToneCache.get_tone(answers[index][i]).diatonic_symbol)
index += 1
def test_enharmonic_fixed_tone(self):
logging.debug('Start test_enharmonic_fixed_tone')
note = Note(DiatonicPitch.parse("C:5"), Duration(1, 4))
policy = FixedToneConstraint(note, DiatonicToneCache.get_tone("Bbb"))
lower_policy_context = TestFixedToneConstraint.policy_creator(ModalityType.Major, DiatonicTone('G'), 'tV',
'C:2', 'C:8')
lower_contextual_note = ContextualNote(lower_policy_context)
m = dict([(note, lower_contextual_note)])
v_result = policy.values(m, note)
assert len(v_result) == 6
for note in v_result:
print('test_simple_fixed_tone pitch = {0}'.format(note.diatonic_pitch))
assert note.diatonic_pitch.diatonic_tone == DiatonicToneCache.get_tone('A')
assert note.base_duration == Duration(1, 4)
lower_contextual_note.note = note
result = policy.verify(m)
assert result is True
lower_contextual_note.note = None
logging.debug('End test_enharmonic_fixed_tone')
def __setitem__(self, key, value):
if isinstance(key, str):
key = DiatonicToneCache.get_tone(key)
if key is None:
raise Exception('Key \'{0}\' invalid syntax.'.format(key))
elif not isinstance(key, DiatonicTone):
raise Exception(
'Key {0} invalid - must be string or DiatonicTone.'.format(
key))
domain_tonal = key in self._domain_tones
if isinstance(value, str):
value = DiatonicToneCache.get_tone(value)
if value is None:
raise Exception('Value \'{0}\' invalid syntax.'.format(value))
elif value is not None and not isinstance(value, DiatonicTone):
raise Exception(
'Range {0} invalid - must be string, DiatonicTone or None.'.
format(value))
range_tonal = value in self._range_tones
if domain_tonal != range_tonal:
raise Exception(
'Both key {0} and value {1} must be in respective tonality or outside for valid setting.'
.format(key, value))
super(TonalFunction, self).__setitem__(key, value)
def test_C_major_modal_scales_center_cue(self):
print(
'test_C_major_modal_scales_center_cue: CenterTone, cue == root tone, modal on C-Major'
)
answers = [['C', 'Bb', 'Ab', 'G', 'F', 'Eb', 'Db'],
['D', 'C', 'B', 'A', 'G', 'F', 'E'],
['E', 'D#', 'C#', 'B', 'A', 'G#', 'F#'],
['F', 'Eb', 'Db', 'Cb', 'Bb', 'Ab', 'Gb'],
['G', 'F', 'Eb', 'D', 'C', 'Bb', 'A'],
['A', 'G', 'F#', 'E', 'D', 'C#', 'B'],
['B', 'A#', 'G#', 'F#', 'E#', 'D#', 'C#']]
index = 0
for letter in list('CDEFGAB'):
modal_tonality = Tonality.create(
ModalityType.Major, DiatonicToneCache.get_tone(letter), index)
f = ChromaticTonalReflectionFunction(
modal_tonality, DiatonicToneCache.get_tone(letter),
FlipType.CenterTone)
TestChromaticTonalReflectionFunction.print_map(
modal_tonality, f, letter)
for tone, i in zip(modal_tonality.annotation[:-1], range(0, 6)):
assert f[tone] == DiatonicToneCache.get_tone(answers[index][i]), \
'f[{0}]={1} != {2}'.format(tone.diatonic_symbol, f[tone].diatonic_symbol,
DiatonicToneCache.get_tone(answers[index][i]).diatonic_symbol)
index = index + 1
def test_C_Major_variable_cue_lower_neighbor_function(self):
print(
'test_C_Major_variable_cue_lower_neighbor_function: C-major, variable cue'
)
domain_tonality = Tonality.create(ModalityType.Major,
DiatonicToneCache.get_tone('C'))
answers = [['D', 'C', 'Bb', 'A', 'G', 'F', 'Eb'],
['F#', 'E', 'D', 'C#', 'B', 'A', 'G'],
['A', 'G', 'F', 'E', 'D', 'C', 'Bb'],
['C', 'Bb', 'Ab', 'G', 'F', 'Eb', 'Db'],
['E', 'D', 'C', 'B', 'A', 'G', 'G'],
['G#', 'F#', 'E', 'D#', 'C#', 'B', 'A'],
['B', 'A', 'G', 'F#', 'E', 'D', 'C']]
index = 0
for letter in list('CDEFGAB'):
f = ChromaticTonalReflectionFunction(
domain_tonality, DiatonicToneCache.get_tone(letter),
FlipType.LowerNeighborOfPair)
TestChromaticTonalReflectionFunction.print_map(
domain_tonality, f, letter)
for tone, i in zip(domain_tonality.annotation[:-1], range(0, 6)):
assert f[tone] == DiatonicToneCache.get_tone(answers[index][i]), \
'f[{0}]={1} != {2}'.format(tone.diatonic_symbol, f[tone].diatonic_symbol,
DiatonicToneCache.get_tone(answers[index][i]).diatonic_symbol)
index += 1
def __getitem__(self, key):
if isinstance(key, str):
key = DiatonicToneCache.get_tone(ChromaticPermutation.NORMALIZED_MAPPING[DiatonicTone.to_upper(key)])
elif isinstance(key, DiatonicTone):
key = DiatonicToneCache.get_tone(ChromaticPermutation.NORMALIZED_MAPPING[key.diatonic_symbol])
else:
raise Exception('Key \'{0}\' must be a tone string or DiatonicTone.'.format(key))
return_tone = super(ChromaticPermutation, self).__getitem__(key)
return self._to_user_preference[return_tone] if return_tone in self._to_user_preference else return_tone
def test_setting_values(self):
t_domain = Tonality.create(ModalityType.Major, DiatonicTone('C'))
t_range = Tonality.create(ModalityType.MajorPentatonic,
DiatonicTone('A'))
# A, B, C#, E, F#
# default map between 2 tonalities of unequal cardinality - empty
p = {
'C': 'A',
'D': 'A',
'E': 'B',
'F': 'C#',
'G': 'C#',
'A': 'E',
'B': 'F#'
}
f = TonalFunction(t_domain, t_range, p)
assert DiatonicToneCache.get_tone('A') == f['C']
assert DiatonicToneCache.get_tone('A') == f['D']
assert DiatonicToneCache.get_tone('B') == f['E']
assert DiatonicToneCache.get_tone('C#') == f['F']
assert DiatonicToneCache.get_tone('C#') == f['G']
assert DiatonicToneCache.get_tone('E') == f['A']
assert DiatonicToneCache.get_tone('F#') == f['B']
assert [0, 0, 1, 2, 2, 3, 4] == f.extract_template().tonal_order
f['C'] = 'B'
f['D'] = 'A'
f['E'] = 'C#'
f['F'] = 'C#'
f['G'] = 'F#'
f['A'] = 'A'
f['B'] = 'E'
# del f['D']
# assert f['D'] is None
assert [1, 0, 2, 2, 4, 0, 3] == f.extract_template().tonal_order
f['C#'] = 'B#'
f['Db'] = 'Ab'
f['A#'] = 'Eb'
assert DiatonicToneCache.get_tone('B#') == f['C#']
assert DiatonicToneCache.get_tone('Ab') == f['Db']
assert DiatonicToneCache.get_tone('Eb') == f['A#']
del f['Db']
def convert_cycles_to_tones(tone_domain, cycles):
if cycles is None:
return []
if not isinstance(cycles, list):
raise Exception('Cycles paramater is not a list.')
new_cycles = list()
for cycle in cycles:
if not isinstance(cycles, list):
raise Exception('Cycle \'{0}\' must be a list.'.format(cycle))
new_cycle = list()
for tone_rep in cycle:
if isinstance(tone_rep, str):
tone = DiatonicToneCache.get_tone(tone_rep)
if tone is None:
raise Exception(
'Tone domain item \'{0}\' illegal syntax.'.format(
tone_rep))
elif isinstance(tone_rep, DiatonicTone):
tone = tone_rep
else:
raise Exception(
'Tone domain item \'{0}\' must be string.'.format(
tone_rep))
if len(tone_domain) != 0:
if tone not in tone_domain:
raise Exception(
'Tone \'{0}\' not in explicit tone domain.'.format(
tone))
new_cycle.append(tone)
new_cycles.append(new_cycle)
return new_cycles
def test_non_centered_odd_function(self):
t_domain = Tonality.create(ModalityType.Major, DiatonicTone('E'))
r = PitchRange.create('E:3', 'E:7')
f = DiatonicPitchReflectionFunction(
t_domain, DiatonicPitch(4, DiatonicToneCache.get_tone('F#')), r,
FlipType.LowerNeighborOfPair)
TestFlipOnTonality.print_map('test_non_centered_odd_function', f)
t = f.tonal_function
assert 'E' == t['A'].diatonic_symbol
assert 'F#' == t['G#'].diatonic_symbol
assert 'G#' == t['F#'].diatonic_symbol
assert 'A' == t['E'].diatonic_symbol
assert 'B' == t['D#'].diatonic_symbol
assert 'C#' == t['C#'].diatonic_symbol
assert 'D#' == t['B'].diatonic_symbol
assert 'C#:4' == str(f['C#:5'])
assert 'D#:4' == str(f['B:4'])
assert 'E:4' == str(f['A:4'])
assert 'F#:4' == str(f['G#:4'])
assert 'G#:4' == str(f['F#:4'])
assert 'A:4' == str(f['E:4'])
assert 'B:4' == str(f['D#:4'])
assert 'C#:5' == str(f['C#:4'])
assert 'D#:5' == str(f['B:3'])
def test_centered_even_function(self):
t_domain = Tonality.create(ModalityType.HWOctatonic, DiatonicTone('C'))
r = PitchRange.create('E:3', 'E:7')
f = DiatonicPitchReflectionFunction(
t_domain, DiatonicPitch(4, DiatonicToneCache.get_tone('A')), r,
FlipType.CenterTone)
TestFlipOnTonality.print_map('test_centered_even_function', f)
t = f.tonal_function
assert 'C' == t['Gb'].diatonic_symbol
assert 'Db' == t['Fb'].diatonic_symbol
assert 'Eb' == t['Eb'].diatonic_symbol
assert 'Fb' == t['Db'].diatonic_symbol
assert 'Gb' == t['C'].diatonic_symbol
assert 'G' == t['Bb'].diatonic_symbol
assert 'A' == t['A'].diatonic_symbol
assert 'Bb' == t['G'].diatonic_symbol
assert 'C:4' == str(f['Gb:5'])
assert 'Db:4' == str(f['Fb:5'])
assert 'Eb:4' == str(
f['Eb:5']) # The other stable tone outside of the centered!
assert 'Fb:4' == str(f['Db:5'])
assert 'Gb:4' == str(f['C:5'])
assert 'G:4' == str(f['Bb:4'])
assert 'A:4' == str(f['A:4'])
assert 'Bb:4' == str(f['G:4'])
assert 'C:5' == str(f['Gb:4'])
assert 'Db:5' == str(f['Fb:4'])
def test_centered_odd_function(self):
t_domain = Tonality.create(ModalityType.Major, DiatonicTone('E'))
r = PitchRange.create('E:3', 'E:7')
f = DiatonicPitchReflectionFunction(
t_domain, DiatonicPitch(4, DiatonicToneCache.get_tone('A')), r,
FlipType.CenterTone)
print('f={0}'.format(f))
TestFlipOnTonality.print_map('test_simple_pitch_function', f)
t = f.tonal_function
assert 'E' == t['D#'].diatonic_symbol
assert 'F#' == t['C#'].diatonic_symbol
assert 'G#' == t['B'].diatonic_symbol
assert 'A' == t['A'].diatonic_symbol
assert 'B' == t['G#'].diatonic_symbol
assert 'C#' == t['F#'].diatonic_symbol
assert 'D#' == t['E'].diatonic_symbol
assert 'D#:5' == str(f['E:4'])
assert 'C#:5' == str(f['F#:4'])
assert 'A:4' == str(f['A:4'])
assert 'G#:4' == str(f['B:4'])
assert 'F#:4' == str(f['C#:5'])
assert 'E:4' == str(f['D#:5'])
def test_non_centered_even_function(self):
t_domain = Tonality.create(ModalityType.WholeTone, DiatonicTone('C'))
r = PitchRange.create('E:3', 'E:7')
f = DiatonicPitchReflectionFunction(
t_domain, DiatonicPitch(4, DiatonicToneCache.get_tone('G#')), r,
FlipType.UpperNeighborOfPair)
TestFlipOnTonality.print_map('test_non_centered_even_function', f)
t = f.tonal_function
assert 'C' == t['D'].diatonic_symbol
assert 'D' == t['C'].diatonic_symbol
assert 'E' == t['A#'].diatonic_symbol
assert 'F#' == t['G#'].diatonic_symbol
assert 'G#' == t['F#'].diatonic_symbol
assert 'A#' == t['E'].diatonic_symbol
assert 'C:4' == str(f['D:5'])
assert 'D:4' == str(f['C:5'])
assert 'E:4' == str(f['A#:4'])
assert 'F#:4' == str(f['G#:4'])
assert 'G#:4' == str(f['F#:4'])
assert 'A#:4' == str(f['E:4'])
assert 'C:5' == str(f['D:4'])
def __init__(self, domain_tonality, new_root_tone, modal_index=None, inherent_modality_type=None):
"""
Constructor.
:param domain_tonality: Given domain tonality.
:param new_root_tone: The root for the new tonality.
:param modal_index: The modal index for the new root tone. If none, match to domain_tonality.
:param inherent_modality_type: new modality type for behind the new tonality, e.g. major. if None, match
to domain tonality.
Note: tonality cardinality must match!
Note: new_root_tone should be the domain_tonality's modal_index tone.
"""
modality = inherent_modality_type if inherent_modality_type is not None else domain_tonality.modality_type
if isinstance(new_root_tone, str):
root_tone_parameter = DiatonicToneCache.get_tone(new_root_tone)
else:
root_tone_parameter = new_root_tone
range_tonality = Tonality.create(modality, root_tone_parameter,
modal_index if modal_index is not None else domain_tonality.modal_index)
if domain_tonality.cardinality != range_tonality.cardinality:
raise Exception('domain and range tonalities must have same cardinality')
self._domain_tonality = domain_tonality
self._range_tonality = range_tonality
self._modal_index = range_tonality.modal_index
self.constr_primary_map = self._build_primary_map()
TonalFunction.__init__(self, self.domain_tonality, self.range_tonality, self.constr_primary_map,
self._build_extension_map())
def __getitem__(self, key):
if isinstance(key, str):
key = DiatonicToneCache.get_tone(key)
if key is None:
raise Exception('Key \'{0}\' invalid syntax.'.format(key))
return super(TonalFunction, self).__getitem__(key)
def values(self, p_map, v_note):
if v_note != self.actor_note:
raise Exception("Illegal v_note {0} for constraints".format(v_note))
if p_map[v_note].note is not None:
if p_map[v_note].note.diatonic_pitch.diatonic_tone == self.tone:
return {p_map[v_note].note}
raise Exception('Fixed Tone Policy Violated has {0} should be {1}'.format(
p_map[v_note].note.diatonic_pitch.diatonic_tone, self.tone))
contextual_note = p_map[self.actor_note]
policy_context = contextual_note.policy_context
pitch_range = contextual_note.policy_context.pitch_range
start_partition = max(ChromaticScale.index_to_location(pitch_range.start_index)[0] - 1, 0)
end_partition = min(ChromaticScale.index_to_location(pitch_range.end_index)[0] + 1,
ChromaticScale.CHROMATIC_END[0])
# Try to find that tone in target's tonality/scale.
tone = self.tone
for t_str in self.tone.enharmonics():
t = DiatonicToneCache.get_tone(t_str)
for scale_tone in PitchScale(policy_context.harmonic_context.tonality,
policy_context.pitch_range).tone_scale:
if scale_tone == t:
tone = t
break
valid_set = OrderedSet()
for i in range(start_partition, end_partition + 1):
pitch = DiatonicPitch(i, tone)
if pitch_range.is_pitch_inbounds(pitch):
note = Note(pitch, self.actor_note.base_duration, self.actor_note.num_dots)
valid_set.add(note)
return valid_set
def test_is_scalar_with_roles(self):
logging.debug('Start test_is_scalar_with_roles')
v_note = Note(DiatonicPitch.parse('F:5'), Duration(1, 4))
lower_policy_context = TestScalarPitchConstraint.policy_creator(
ModalityType.Major, DiatonicToneCache.get_tone('G'), 'tV', 'G:5',
'G:7')
lower_context_note = ContextualNote(lower_policy_context)
parameter_map = dict([(v_note, lower_context_note)])
policy = ScalarPitchConstraint(v_note, [3, 5])
v_result = policy.values(parameter_map, v_note)
tones = list(lower_policy_context.harmonic_context.tonality.annotation)
tones = tones[:-1]
for note in v_result:
print('test_is_scalar; note = {0}'.format(note))
tone = note.diatonic_pitch.diatonic_tone
octave = note.diatonic_pitch.octave
assert tone in tones
assert tones.index(tone) in [3, 5]
assert octave in range(5, 8)
assert len(v_result) == 2 * 2
for note in v_result:
parameter_map[v_note].note = note
assert policy.verify(parameter_map) is True
logging.debug('End test_is_scalar_with_roles')
def __getitem__(self, key):
if isinstance(key, str):
key = DiatonicToneCache.get_tone(key)
if key is None:
raise Exception('Illegal tone syntax \'{0}\'.'.format(key))
if not isinstance(key, DiatonicTone):
raise Exception(
'Key \'{0}\' must be instance of DiatonticTone'.format(key))
return super(TonalPermutation, self).__getitem__(key)
def test_C_pentatonic(self):
print('test_C_pentatonic: C-Pentatonic, variable cue')
domain_tonality = Tonality.create(ModalityType.MajorPentatonic,
DiatonicToneCache.get_tone('C'))
tones = domain_tonality.annotation[:-1]
cue_tone = tones[1]
f = ChromaticTonalReflectionFunction(domain_tonality, cue_tone,
FlipType.CenterTone)
TestChromaticTonalReflectionFunction.print_map(
domain_tonality, f, cue_tone.diatonic_symbol)
answers = ['E', 'D', 'C', 'A', 'G']
for tone, i in zip(tones, range(0, 5)):
assert f[tone] == DiatonicToneCache.get_tone(answers[i]), \
'f[{0}]={1} != {2}'.format(tone.diatonic_symbol, f[tone].diatonic_symbol,
DiatonicToneCache.get_tone(answers[i]).diatonic_symbol)
def test_only_cycles(self):
cycles = [['C', 'D'], ['Eb', 'F#']]
p = TonalPermutation(cycles)
assert DiatonicToneCache.get_tone('C') in p.tone_domain
assert DiatonicToneCache.get_tone('D') in p.tone_domain
assert DiatonicToneCache.get_tone('Eb') in p.tone_domain
assert DiatonicToneCache.get_tone('F#') in p.tone_domain
assert DiatonicToneCache.get_tone('D') == p['C']
assert DiatonicToneCache.get_tone('C') == p['D']
assert DiatonicToneCache.get_tone('Eb') == p['F#']
assert DiatonicToneCache.get_tone('F#') == p['Eb']
def create(modality_type, diatonic_tone, modal_index=0):
"""
Constructor.
:param modality_type: ModalityType being used.
:param diatonic_tone: DiatonicTone being used as root.
:param modal_index: (origin 0), which of the tonality's tone is the actual root_tone.
"""
if isinstance(diatonic_tone, str):
base_diatonic_tone = DiatonicToneCache.get_tone(diatonic_tone)
else:
base_diatonic_tone = diatonic_tone
return Tonality(ModalityFactory.create_modality(modality_type, modal_index), base_diatonic_tone)
def test_extension_map(self):
t_domain = Tonality.create(ModalityType.Major, DiatonicTone('C'))
t_range = Tonality.create(ModalityType.Major, DiatonicTone('A'))
extension_map = {'C#': 'A#', 'D#': 'C', 'Gb': 'G#'}
# default map between 2 tonalities of same cardinality.
f = TonalFunction(t_domain, t_range, None, extension_map)
assert DiatonicToneCache.get_tone('A') == f['C']
assert DiatonicToneCache.get_tone('B') == f['D']
assert DiatonicToneCache.get_tone('C#') == f['E']
assert DiatonicToneCache.get_tone('D') == f['F']
assert DiatonicToneCache.get_tone('E') == f['G']
assert DiatonicToneCache.get_tone('F#') == f['A']
assert DiatonicToneCache.get_tone('G#') == f['B']
assert f['Db'] is None
assert DiatonicToneCache.get_tone('A#') == f['C#']
assert DiatonicToneCache.get_tone('C') == f['D#']
assert f['Eb'] is None
assert DiatonicToneCache.get_tone('G#') == f['Gb']
assert f['F#'] is None
def test_basic_tonal_permutation(self):
domain = {'C', 'D', 'Eb', 'F#'}
cycles = [['C', 'D'], ['Eb', 'F#']]
p = TonalPermutation(cycles, domain)
print(p)
assert DiatonicToneCache.get_tone('C') in p.tone_domain
assert DiatonicToneCache.get_tone('D') in p.tone_domain
assert DiatonicToneCache.get_tone('Eb') in p.tone_domain
assert DiatonicToneCache.get_tone('F#') in p.tone_domain
assert DiatonicToneCache.get_tone('D') == p['C']
assert DiatonicToneCache.get_tone('C') == p['D']
assert DiatonicToneCache.get_tone('Eb') == p['F#']
assert DiatonicToneCache.get_tone('F#') == p['Eb']
def test_simple_tonal_permutation(self):
t_domain = Tonality.create(ModalityType.Major, DiatonicTone('E'))
cycles = [['E', 'G#', 'A', 'B'], ('F#', 'G#')]
p = TonalityPermutation(t_domain, cycles)
assert DiatonicToneCache.get_tone('G#') == p['E']
assert DiatonicToneCache.get_tone('A') == p['F#']
assert DiatonicToneCache.get_tone('F#') == p['G#']
assert DiatonicToneCache.get_tone('B') == p['A']
assert DiatonicToneCache.get_tone('E') == p['B']
assert DiatonicToneCache.get_tone('C#') == p['C#']
assert DiatonicToneCache.get_tone('D#') == p['D#']
def create_score(s_notes, modality, key_tone, chords, instrument, ts):
diatonic_tonality = Tonality.create(modality, DiatonicToneCache.get_tone(key_tone))
hc_track = TestTReshape.create_track(chords, diatonic_tonality)
tempo_seq = TempoEventSequence()
ts_seq = EventSequence()
tempo_seq.add(TempoEvent(Tempo(60, Duration(1, 4)), Position(0)))
ts_seq.add(TimeSignatureEvent(TimeSignature(ts[0], Duration(1, ts[1]), ts[2]), Position(0)))
c = InstrumentCatalog.instance()
violin = c.get_instrument(instrument)
return LiteScore(TestTReshape.create_line(s_notes), hc_track, violin, tempo_seq, ts_seq)
def create_score_artifacts(modality, key_tone, chords, ts):
diatonic_tonality = Tonality.create(
modality, DiatonicToneCache.get_tone(key_tone))
hc_track = TestPitchFitFunction.create_track(chords, diatonic_tonality)
tempo_seq = TempoEventSequence()
ts_seq = EventSequence()
tempo_seq.add(TempoEvent(Tempo(60, Duration(1, 4)), Position(0)))
ts_seq.add(
TimeSignatureEvent(TimeSignature(ts[0], Duration(1, ts[1]), ts[2]),
Position(0)))
return hc_track, tempo_seq, ts_seq
def get_tone(diatonic_tone_text):
"""
Fetch a cached diatonic tone based on text representation.
Args:
diatonic_tone_text: text specification, e.g. Abb
Returns:
DiatonicTone for specified pitch
Exceptions:
If specified pitch cannot be parsed.
"""
return DiatonicToneCache.get_tone(diatonic_tone_text)
def __init__(self, cycles=None):
self._to_user_preference = dict()
if cycles is None:
cycles = list()
norm_cycles = list()
if len(cycles) == 0:
for t in ChromaticPermutation.NORMALIZED_TONES:
tone = DiatonicToneCache.get_tone(t)
norm_cycles.append([tone])
self._to_user_preference[tone] = tone
else:
if not isinstance(cycles, list):
raise Exception('Cycles must be a list.')
for cycle in cycles:
if not isinstance(cycle, list):
raise Exception('Cycle must be a list {0}.'.format(cycle))
norm_cycle = list()
for v in cycle:
if not isinstance(v, str):
raise Exception('Cycle element must be a string {0}.'.format(v))
tone_txt = DiatonicTone.to_upper(v)
if tone_txt is None:
raise Exception('Cycle element \'{0}\' not a recognized tone.'.format(v))
tone = DiatonicToneCache.get_tone(ChromaticPermutation.NORMALIZED_MAPPING[tone_txt])
if tone in norm_cycle:
raise Exception('Tone \'{0}\' appears twice enharmonically in same cycle.'.format(v))
norm_cycle.append(tone)
# User preferred representation of tone is always the first one found.
if tone not in self._to_user_preference:
self._to_user_preference[tone] = DiatonicToneCache.get_tone(tone_txt)
norm_cycles.append(norm_cycle)
tone_list = [DiatonicToneCache.get_tone(x) for x in ChromaticPermutation.NORMALIZED_TONES]
Permutation.__init__(self, tone_list, norm_cycles)
def test_simple_id(self):
t_domain = Tonality.create(ModalityType.Major, DiatonicTone('E'))
p = TonalityPermutation(t_domain)
print(p)
assert DiatonicToneCache.get_tone('E') == p['E']
assert DiatonicToneCache.get_tone('F#') == p['F#']
assert DiatonicToneCache.get_tone('G#') == p['G#']
assert DiatonicToneCache.get_tone('A') == p['A']
assert DiatonicToneCache.get_tone('B') == p['B']
assert DiatonicToneCache.get_tone('C#') == p['C#']
assert DiatonicToneCache.get_tone('D#') == p['D#']
def __delitem__(self, key):
if isinstance(key, str):
key = DiatonicToneCache.get_tone(key)
if key is None:
raise Exception('Key \'{0}\' invalid syntax.'.format(key))
elif not isinstance(key, DiatonicTone):
raise Exception(
'Key {0} invalid - must be string or DiatonicTone.'.format(
key))
if key in self._domain_tones:
raise Exception('Tone {0} must not be in tonality {1}'.format(
key, self.domain_tonality))
super(TonalFunction, self).__delitem__(key)
def _build_lex_dcom_maps(tonality, scale_origin_str):
# lex maps all enharmonics to either tones in the tonality or outside of tonality to some select
# representation
lex = dict()
used = set()
for tone in tonality.annotation:
enharmonics = DiatonicTone.DIATONIC_OFFSET_ENHARMONIC_MAPPING[tone.placement]
for t in enharmonics:
lex[DiatonicToneCache.get_tone(t)] = tone
used.add(tone.placement)
outside = set(range(0, 12)) - used
for p in outside:
enharmonics = DiatonicTone.DIATONIC_OFFSET_ENHARMONIC_MAPPING[p]
select_tone = DiatonicToneCache.get_tone(enharmonics[0])
enharmonics = DiatonicTone.DIATONIC_OFFSET_ENHARMONIC_MAPPING[select_tone.placement]
for t in enharmonics:
lex[DiatonicToneCache.get_tone(t)] = select_tone
# build com which maps the range of lex to the appropriate octave
origin_pitch = DiatonicPitch.parse(scale_origin_str)
base_octave = origin_pitch.octave
com = dict()
values = list({v for v in lex.values()})
values.sort(key=lambda x: x.placement)
index = values.index(origin_pitch.diatonic_tone)
value_list = values if index == 0 else values[index: len(values)] + values[0: index]
com[value_list[0]] = octave = base_octave
for i in range(1, len(value_list)):
octave = octave + 1 if DiatonicPitch.crosses_c(value_list[i - 1], value_list[i], True) \
else octave
com[value_list[i]] = octave
return lex, com