def test_create(self):
with self.assertRaises(Exception):
PitchRange(8, 96)
with self.assertRaises(Exception):
PitchRange(9, 97)
with self.assertRaises(Exception):
PitchRange('Ab:0', 'C:8')
with self.assertRaises(Exception):
PitchRange.create('A:0', 'C#:8')
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 simple_reshape_no_pf():
print('----- test_simple_reshape_no_pf -----')
line_str = '{<C-Major: I> iE:4 E E E E E E E <:IV> qE ie e <:V> qe ie e <:VI> qE E iE E E E}'
score = create_score(line_str, 'violin', (3, 4, 'sww'))
all_notes = score.line.get_all_notes()
pitch_function = GenericUnivariatePitchFunction(sinasoidal, Position(0),
Position(3))
time_range = Range(0, 3)
# The first note should have one of 3 values, C:4, E:4, G:4
constraints = {
ChordalPitchConstraint(all_notes[0]),
ChordalPitchConstraint(all_notes[9]),
PitchRangeConstraint([all_notes[0]], PitchRange.create('C:4', 'G:4')),
}
motif = Motif(score.line, constraints, 'A')
melodic_form = MelodicForm([motif])
treshape = TReshape(score, pitch_function, time_range, melodic_form, False)
results = treshape.apply()
mc_filter = MinCurveFitFilter(pitch_function, results)
print('{0} filtered results'.format(len(mc_filter.scored_results)))
for index in range(0, min(5, len(mc_filter.scored_results))):
result = mc_filter.scored_results[index]
print('[{0}] {1} ({2})'.format(index, str_line(result[0].line),
result[1]))
def _build_tunnel_constraints(self, source_to_target, tag_map):
if tag_map is None or len(tag_map) == 0:
return []
one_id = next(iter(tag_map.keys()))
source_note = self.source_line.get_all_notes()[one_id]
target_pitch = tag_map[one_id]
mvmt_interval = Interval.create_interval(source_note.diatonic_pitch,
target_pitch)
constraints = list()
note_annotations = self.source_analysis.note_annotation
for annotation in note_annotations:
if annotation.note.diatonic_pitch is None:
continue
target_note = source_to_target[annotation.note]
dest_ctr_pitch = mvmt_interval.get_end_pitch(
annotation.note.diatonic_pitch)
low_pitch = self.tunnel_half_interval.get_start_pitch(
dest_ctr_pitch)
high_pitch = self.tunnel_half_interval.get_end_pitch(
dest_ctr_pitch)
p_range = PitchRange.create(low_pitch, high_pitch)
constraint = PitchRangeConstraint([target_note], p_range)
constraints.append(constraint)
return constraints
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_additional_octaves(self):
t_domain = Tonality.create(ModalityType.MinorPentatonic,
DiatonicTone('C'))
i = Interval(12, IntervalType.Perfect)
r = PitchRange.create('E:3', 'E:7')
f = CrossTonalityShiftPitchFunction(t_domain, r, i)
print('f={0}'.format(f))
assert 'P:12' == str(f.root_shift_interval)
assert 'G:5' == str(f['C:4'])
assert 'A:5' == str(f['D:4'])
assert 'B:5' == str(f['E:4'])
assert 'C:6' == str(f['F:4'])
i = Interval(11, IntervalType.Perfect).negation()
f = CrossTonalityShiftPitchFunction(t_domain, r, i)
print('f={0}'.format(f))
assert '-P:11' == str(f.root_shift_interval)
assert 'G:2' == str(f['C:4'])
assert 'A:2' == str(f['D:4'])
assert 'B:2' == str(f['E:4'])
assert 'C:3' == str(f['F:4'])
def test_forward_with_extension(self):
t_domain = Tonality.create(ModalityType.Major, DiatonicTone('E'))
cycles = [['E', 'G#', 'A', 'C#'], ('F#', 'D#')]
extension = dict()
extension['D'] = 'F'
extension['F'] = 'G'
permutation_function = TonalityPermutationFunction.create(
t_domain, cycles, extension)
r = PitchRange.create('E:3', 'E:7')
f = TonalityPitchFunction(permutation_function, ('E:4', 'E:5'), r,
False)
TestTonalityPitchFunction.print_map('test_forward_with_extension', f)
assert 'G#:5' == str(f['E:4'])
assert 'G:5' == str(f['F:4'])
assert 'D#:6' == str(f['F#:4'])
assert 'A:5' == str(f['G#:4'])
assert 'C#:6' == str(f['A:4'])
assert 'B:5' == str(f['B:4'])
assert 'E:5' == str(f['C#:5'])
assert 'E:5' == str(f['B##:4'])
assert 'F:5' == str(f['D:5'])
assert 'F:5' == str(f['C##:5'])
assert 'F#:5' == str(f['D#:5'])
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_simple_reverse_pitch_function(self):
t_domain = Tonality.create(ModalityType.Major, DiatonicTone('E'))
cycles = [['E', 'G#', 'A', 'C#'], ('F#', 'D#')]
permutation_function = TonalityPermutationFunction.create(
t_domain, cycles)
r = PitchRange.create('E:3', 'E:7')
f = TonalityPitchFunction(permutation_function, ('E:4', 'E:5'), r,
True)
TestTonalityPitchFunction.print_map(
'test_simple_reverse_pitch_fnction', f)
assert 'G#:5' == str(f['E:4'])
assert 'D#:6' == str(f['F#:4'])
assert 'A:5' == str(f['G#:4'])
assert 'C#:6' == str(f['A:4'])
assert 'B:5' == str(f['B:4'])
assert 'E:5' == str(f['C#:5'])
assert 'F#:5' == str(f['D#:5'])
assert 'G#:4' == str(f['E:5'])
assert 'D#:5' == str(f['F#:5'])
assert 'A:4' == str(f['G#:5'])
assert 'C#:5' == str(f['A:5'])
assert 'B:4' == str(f['B:5'])
assert 'E:4' == str(f['C#:6'])
assert 'F#:4' == str(f['D#:6'])
def test_major_modality(self):
print('Testing Major Modality: D-Major, cue=G:4')
domain_tonality = Tonality.create(ModalityType.Major, DiatonicFoundation.get_tone('D'))
cue_pitch = DiatonicPitch.parse('G:4')
domain_pitch_range = PitchRange.create('D:3', 'C#:6')
f = ChromaticPitchReflectionFunction(domain_tonality, cue_pitch, domain_pitch_range, FlipType.CenterTone)
TestChromaticPitchReflectionFunction.print_function(f)
# Ensure all domain keys are in the domain_pitch_range
for pitch in f.domain:
assert domain_pitch_range.is_pitch_inbounds(pitch), \
'Pitch {0} is not in range {1}.'.format(pitch, domain_pitch_range)
assert DiatonicPitch.parse('D:3') in f.domain
assert DiatonicPitch.parse('C#:6') in f.domain
# Test for octave coverage
assert 6 == f['D:3'].octave
assert 5 == f['C#:4'].octave
assert 5 == f['D:4'].octave
assert 4 == f['C#:5'].octave
assert 4 == f['D:5'].octave
assert 3 == f['C#:6'].octave
def test_diatonic_modal_indexed_function(self):
t_domain = Tonality.create(ModalityType.Major, DiatonicTone('C'))
i = Interval(2, IntervalType.Major)
r = PitchRange.create('E:3', 'E:7')
f = CrossTonalityShiftPitchFunction(t_domain, r, i, modal_index=4)
print('f={0}'.format(f))
TestCrossTonalityShiftPitchFunction.print_map('test_diatonic_function',
f)
t = f.tonal_function
print(t)
# test diatonic maps
assert 'D:4' == str(f['C:4'])
assert 'E:4' == str(f['D:4'])
assert 'F#:4' == str(f['E:4'])
assert 'G:4' == str(f['F:4'])
assert 'A:4' == str(f['G:4'])
assert 'B:4' == str(f['A:4'])
assert 'C:5' == str(f['B:4'])
assert 'D:5' == str(f['C:5'])
assert 'M:2' == str(f.root_shift_interval)
def test_pitch_inbounds(self):
pr = PitchRange.create('C:4', 'B:4')
scale = list('CDEFGAB')
for s in scale:
self.assertTrue(pr.is_pitch_inbounds(s + ':4'))
self.assertFalse(pr.is_pitch_inbounds('Cb:4'))
self.assertFalse(pr.is_pitch_inbounds('B#:4'))
def test_pentatonic_tonal_function(self):
t_domain = Tonality.create(ModalityType.MinorPentatonic,
DiatonicTone('C'))
i = Interval(5, IntervalType.Perfect)
r = PitchRange.create('E:3', 'E:7')
f = CrossTonalityShiftPitchFunction(t_domain, r, i)
print('f={0}'.format(f))
TestCrossTonalityShiftPitchFunction.print_map(
'test_pentatonic_tonal_function', f)
t = f.tonal_function
print(t)
assert 'G' == t['C'].diatonic_symbol
assert 'Bb' == t['Eb'].diatonic_symbol
assert 'C' == t['F'].diatonic_symbol
assert 'D' == t['G'].diatonic_symbol
assert 'F' == t['Bb'].diatonic_symbol
assert 'G:5' == str(f['C:5'])
assert 'F:5' == str(f['Bb:4'])
assert 'D:5' == str(f['G:4'])
assert 'C:5' == str(f['F:4'])
assert 'Bb:4' == str(f['Eb:4'])
assert 'G:4' == str(f['C:4'])
# test range
d = f.domain_pitch_range
print(d)
assert d.start_index == DiatonicPitch.parse('E:3').chromatic_distance
assert d.end_index == DiatonicPitch.parse('E:7').chromatic_distance
r = f.range_pitch_range
print(r)
assert r.start_index == DiatonicPitch.parse('B:3').chromatic_distance
assert r.end_index == DiatonicPitch.parse('B:7').chromatic_distance
# test chromatics
assert 'G#:5' == str(f['C#:5'])
assert 'F#:5' == str(f['B:4'])
assert 'E#:5' == str(f['A#:4'])
assert 'E:5' == str(f['A:4'])
assert 'D#:5' == str(f['G#:4'])
assert 'C#:5' == str(f['F#:4'])
assert 'B:4' == str(f['E:4'])
assert 'A:4' == str(f['D:4'])
assert 'A#:4' == str(f['D#:4'])
assert 'G#:4' == str(f['C#:4'])
assert 'Gb:5' == str(f['Cb:5'])
assert 'Fb:5' == str(f['Bbb:4'])
assert 'Eb:5' == str(f['Ab:4'])
assert 'Db:5' == str(f['Gb:4'])
assert 'Cb:5' == str(f['Fb:4'])
assert 'Bbb:4' == str(f['Ebb:4'])
assert 'Ab:4' == str(f['Db:4'])
assert 'Gb:4' == str(f['Cb:4'])
def _optimize_note_domain(self, note, constraints, score):
"""
For note, get all values it can take satisfying all its constraints.
Then if there is only one, build a fixed pitch constraint for it.
If there are more than two, use the curve fits values to make a fixed pitch to set.
:param note:
:param constraints:
:param score:
:return:
"""
domain = set()
first = True
for constraint in constraints:
# build a pmap for all actor in the constraint
pmap = PMap()
for n in constraint.actors:
hc = score.hct.get_hc_by_position(n.get_absolute_position())
pmap[n] = ContextualNote(
PolicyContext(
hc,
score.instrument.sounding_pitch_range()
if score.instrument is not None else PitchRange.create(
'A:0', 'C:8')))
# Get all possible pitch values for note in this constraint.
# domain will hold all the values that match across all constraints
values = {n.diatonic_pitch for n in constraint.values(pmap, note)}
if first:
domain = values
first = False
else:
domain = domain.intersection(values)
if len(domain) == 0:
return set()
pitch_list = list(domain)
if len(domain) > 2:
# Find 2 pitches in domain that are closest to the curve fit
valuation = self.pitch_function.eval_as_nearest_pitch(
note.get_absolute_position().position)
candidates = [
(p, abs(p.chromatic_distance - valuation.chromatic_distance))
for p in domain
]
candidates = sorted(candidates, key=lambda candidate: candidate[1]
) # sort on chromatic distance.
pitch_list = [candidates[0][0],
candidates[1][0]] # Take the top to
if len(pitch_list) == 1:
return {FixedPitchConstraint(note, pitch_list[0])}
# set first as best, second as next best.
(first, second) = (pitch_list[0], pitch_list[1]) if pitch_list[0].chromatic_distance <= \
pitch_list[1].chromatic_distance else \
(pitch_list[1], pitch_list[0])
return {FixedPitchSelectSetConstraint(note, [first, second])}
def test_low_range(self):
ranges = PitchRange.create("A:0", "C:5")
for modality_type in SYSTEM_MODALITIES:
for validTone in ModalityFactory.create_modality(modality_type).get_valid_root_tones():
tonality = Tonality.create(modality_type, DiatonicFoundation.get_tone(validTone))
pitch_scale = PitchScale(tonality, ranges)
print('Scale {0} {1} on {2}: {3}'.format(validTone, modality_type.name, ranges,
','.join(map(get_symbol, pitch_scale.pitch_scale))))
scale_check(pitch_scale, tonality)
def _build_pitch_segment_dict(tonality, scale_origin_str):
origin_pitch = DiatonicPitch.parse(scale_origin_str)
pitch_range = PitchRange.create(
'{0}:{1}'.format(origin_pitch.diatonic_tone.diatonic_symbol, origin_pitch.octave),
'{0}:{1}'.format(origin_pitch.diatonic_tone.diatonic_symbol, origin_pitch.octave + 1))
scale = PitchScale(tonality, pitch_range).pitch_scale[0: -1]
d = OrderedDict()
for p in scale:
d[p.diatonic_tone] = p.octave
return d
def test_simple_reshape(self):
print('----- test_hct_simple_shift -----')
s_notes = [
('E:4', 'e'),
('E:4', 'e'),
('E:4', 'e'),
('E:4', 'e'),
('E:4', 'e'),
('E:4', 'e'),
('E:4', 'e'),
('E:4', 'e'),
('E:4', 'h'),
('E:4', 'h'),
('E:4', 'q'),
('E:4', 'q'),
('E:4', 'q'),
('E:4', 'q'),
]
chords = [('tI', 1), ('tIV', (1, 2)), ('tV', (1, 2)), ('tVI', 1)]
score = TestTReshape.create_score(s_notes, ModalityType.Major, 'C', chords, 'violin', (3, 4, 'sww'))
all_notes = score.line.get_all_notes()
pitch_function = GenericUnivariatePitchFunction(TestTReshape.sinasoidal, Position(0), Position(3))
time_range = Range(0, 3)
# The first note should have one of 3 values, C:4, E:4, G:4
constraints = {
ChordalPitchConstraint(all_notes[0]),
PitchRangeConstraint([all_notes[0]], PitchRange.create('C:4', 'G:4')),
}
motif = Motif(score.line, constraints, 'A')
melodic_form = MelodicForm([motif])
treshape = TReshape(score, pitch_function, time_range, melodic_form, False)
results = treshape.apply()
assert results is not None
assert len(results) == 3
for result in results:
print('-----')
print(result.line)
first_pitch_set = {str(result.line.get_all_notes()[0].diatonic_pitch) for result in results}
assert {'E:4', 'C:4', 'G:4'} == first_pitch_set
assert abs(TestTReshape.sinasoidal(Fraction(1, 8)) - DiatonicPitch.parse('D:5').chromatic_distance) < 1
def test_lowest_placement(self):
pr = PitchRange.create('G:3', 'G:5')
answers = [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3]
for i in range(0, 12):
lowest = pr.find_lowest_placement_in_range(i)
partition = ChromaticScale.index_to_location(lowest)[0]
self.assertTrue(partition == answers[i], 'Assert failure {0} != {1}'.format(partition, answers[i]))
print(i, partition)
with self.assertRaises(Exception):
pr.find_lowest_placement_in_range(-1)
with self.assertRaises(Exception):
pr.find_lowest_placement_in_range(12)
def test_reversal_tonal_function(self):
t_domain = Tonality.create(ModalityType.Major, DiatonicTone('G'))
cycles = [['C'], ['B', 'D'], ['E', 'A'], ['G', 'F#']]
permutation_function = TonalityPermutationFunction.create(
t_domain, cycles)
r = PitchRange.create('E:3', 'E:7')
f = TonalityPitchFunction(permutation_function, ('E:4', 'E:4'), r,
True)
TestTonalityPitchFunction.print_map('test_reversal_tonal_function', f)
assert 'C:5' == str(f['C:5'])
def compute_pitch_range(line):
notes = line.get_all_notes()
max_pitch = min_pitch = notes[0].diatonic_pitch
for i in range(1, len(notes)):
pitch = notes[i].diatonic_pitch
if pitch is None:
continue
if pitch < min_pitch:
min_pitch = pitch
elif pitch > max_pitch:
max_pitch = pitch
return PitchRange.create(min_pitch, max_pitch)
def test_shift_create(self):
t_domain = Tonality.create(ModalityType.MelodicMinor,
DiatonicTone('C'))
i = Interval(5, IntervalType.Perfect)
r = PitchRange.create('E:3', 'E:7')
f = CrossTonalityShiftPitchFunction(t_domain, r, i)
assert 'P:5' == str(f.root_shift_interval)
assert 'G:4' == str(f['C:4'])
assert 'A:4' == str(f['D:4'])
assert 'B:4' == str(f['E:4'])
assert 'C:5' == str(f['F:4'])
def test_melodic_minor_modality(self):
print('Testing Melodic Minor Modality: C-MelodicMinor, cue=Eb:3')
domain_tonality = Tonality.create(ModalityType.MelodicMinor, DiatonicFoundation.get_tone('C'))
cue_pitch = DiatonicPitch.parse('Eb:3')
domain_pitch_range = PitchRange.create('D:4', 'F:5')
f = ChromaticPitchReflectionFunction(domain_tonality, cue_pitch, domain_pitch_range, FlipType.CenterTone)
TestChromaticPitchReflectionFunction.print_function(f)
assert 2 == f['D:4'].octave
assert 2 == f['G:4'].octave
assert 1 == f['A:4'].octave
assert 1 == f['C:5'].octave
assert 1 == f['f:5'].octave
def test_natural_minor_modality(self):
print('Testing Natural Minor Modality: C-Major, cue=Eb:3')
domain_tonality = Tonality.create(ModalityType.NaturalMinor, DiatonicFoundation.get_tone('C'))
cue_pitch = DiatonicPitch.parse('Eb:3')
domain_pitch_range = PitchRange.create('D:2', 'F:4')
f = ChromaticPitchReflectionFunction(domain_tonality, cue_pitch, domain_pitch_range, FlipType.CenterTone)
TestChromaticPitchReflectionFunction.print_function(f)
# Test for octave coverage
assert 4 == f['D:2'].octave
assert 3 == f['Bb:2'].octave
assert 3 == f['C:3'].octave
assert 2 == f['Bb:3'].octave
assert 2 == f['F:4'].octave
def test_check_chromatics_on_pentatonic(self):
t_domain = Tonality.create(ModalityType.MajorPentatonic,
DiatonicTone('E'))
# E F# G# B C# E
r = PitchRange.create('E:1', 'E:7')
f = DiatonicPitchReflectionFunction(
t_domain, DiatonicPitch(4, DiatonicToneCache.get_tone('G#')), r,
FlipType.CenterTone)
TestFlipOnTonality.print_map('test_check_chromatics_on_pentatonic', f)
t = f.tonal_function
assert 'G#' == t['G#'].diatonic_symbol
assert 'F#' == t['B'].diatonic_symbol
assert 'E' == t['C#'].diatonic_symbol
assert 'B' == t['F#'].diatonic_symbol
assert 'C#' == t['E'].diatonic_symbol
assert 'E:4' == str(f['C#:5'])
assert 'F#:4' == str(f['B:4'])
assert 'G#:4' == str(f['G#:4'])
assert 'B:4' == str(f['F#:4'])
assert 'C#:5' == str(f['E:4'])
assert 'E#:5' == str(f['C:4'])
assert 'D#:5' == str(f['D:4'])
assert 'B#:4' == str(f['F:4'])
assert 'G##:4' == str(
f['G:4']) # Note this and next are not symmetrical!
assert 'G:4' == str(f['A#:4'])
assert 'F##:4' == str(f['A:4'])
assert 'E##:5' == str(f['Cb:4'])
assert 'D##:5' == str(f['Db:4'])
assert 'C##:5' == str(f['Eb:4'])
assert 'B##:4' == str(f['Fb:4'])
assert 'G###:4' == str(f['Gb:4'])
assert 'F###:4' == str(
f['Ab:4']
) # Very interesting case!!! closest is G#, but need F# to get to G#
assert 'F##:4' == str(f['Bb:4'])
assert 'F:4' == str(f['B#:4'])
assert 'D:5' == str(f['D#:4'])
assert 'C:5' == str(f['E#:4'])
assert 'G:4' == str(f['A#:4'])
def simple_reshape_cpf():
print('----- test_simple_reshape_cpf (Fgure 17.21) -----')
line_str = '{<C-Major: I> iE:4 E E E E E E E <:IV> qE ie e <:V> qe ie e <:VI> qE E iE E E E}'
score = create_score(line_str, 'violin', (3, 4, 'sww'))
all_notes = score.line.get_all_notes()
# 11 scalar notes to C:4 (0) to G:5 (1) with pitch unit 1/19
interpreter = ChromaticRangeInterpreter(DiatonicPitch.parse('C:4'), 0,
Fraction(1, 19))
pitch_function = GenericUnivariatePitchFunction(three_sin,
Position(0),
Position(3),
interp=interpreter)
# The first note should have one of 3 values, C:4, E:4, G:4
constraints = {
ChordalPitchConstraint(all_notes[0]),
ChordalPitchConstraint(all_notes[8]),
ChordalPitchConstraint(all_notes[11]),
ChordalPitchConstraint(all_notes[14]),
PitchRangeConstraint([all_notes[0]], PitchRange.create('C:4', 'E:4')),
}
# motif = Motif(score.line, constraints, 'A')
motif = Motif([all_notes[0], all_notes[8], all_notes[11], all_notes[14]],
constraints, 'A')
melodic_form = MelodicForm([motif])
t_reshape = TReshape(score, pitch_function, Range(0, 3), melodic_form,
True)
results = t_reshape.apply()
filters = MinCurveFitFilter(pitch_function, results)
print('{0} filtered results'.format(len(filters.scored_results)))
for index in range(0, min(5, len(filters.scored_results))):
result = filters.scored_results[index]
print('[{0}] {1} ({2})'.format(index, str_line(result[0].line),
result[1]))
print('Chords: {0}'.format(','.join([str(c)
for c in score.hct.hc_list()])))
def _build_p_map_dict(self, hct, pitch_constraints):
actors = set()
for p in pitch_constraints:
actors = actors.union(p.actors)
d = OrderedDict()
for note in actors:
hc = hct[note.get_absolute_position().position]
if hc is None:
raise Exception(
'Cannot locate harmonic context for note \'{0}\''.format(
note))
pitch_range = self.score.instrument.sounding_pitch_range() if self.score.instrument is not None \
else PitchRange.create('A:0', 'C:8')
contextual = ContextualNote(PolicyContext(hc, pitch_range))
d[note] = contextual
return d
def reshape_to_scale():
print('----- test_reshape_to_scale (Fgure 17.24) -----')
line_str = '{<C-Major: I> iE:4 E E E E E E E E E E E E E E E E E E E E E E E wE}'
score = create_score(line_str, 'violin', (4, 4, 'swww'))
tonality = score.hct.get_hc_by_position(0).tonality
all_notes = score.line.get_all_notes()
plf = PiecewiseLinearFunction([(0, 0), (1, 8), (Fraction(3, 2), 4), (2, 8),
(3, 0)])
for i in range(0, 17):
x = Fraction(1, 8) * i
y = plf(x)
print('({0}, {1})'.format(x, y))
time_range = Range(0, 3)
interpreter = ScalarRangeInterpreter(tonality, DiatonicPitch.parse('C:4'),
0, 1)
pitch_function = GenericUnivariatePitchFunction(plf, Position(0),
Position(3), False,
interpreter)
constraints = {
ChordalPitchConstraint(all_notes[0]),
PitchRangeConstraint([all_notes[0]], PitchRange.create('C:4', 'G:4')),
}
motif = Motif([all_notes[0]], constraints, 'A')
melodic_form = MelodicForm([motif])
t_reshape = TReshape(score, pitch_function, time_range, melodic_form,
False)
results = t_reshape.apply()
filters = MinCurveFitFilter(pitch_function, results)
print('{0} filtered results'.format(len(filters.scored_results)))
for index in range(0, min(5, len(filters.scored_results))):
result = filters.scored_results[index]
print('[{0}] {1} ({2})'.format(index, str_line(result[0].line),
result[1]))
def __init__(self,
tonality,
anchor_pitch=None,
anchor_value=None,
pitch_unit=1):
"""
Constructor.
:param tonality: The tonality being mapped to.
:param anchor_pitch: A DiatonicPitch, in combo with anchor_value is a sample of the mapping.
:param anchor_value: A numeric value that maps to anchor_pitch.
:param pitch_unit: In the linear map of value to pitches, pitch_unit is the distance between mapping values.
"""
self.__tonality = tonality
self.__pitch_scale = PitchScale(self.tonality,
PitchRange.create('A:0',
'C:8')).pitch_scale
self.anchor_pitch = self.pitch_scale[0] if anchor_pitch is None else \
DiatonicPitch.parse(anchor_pitch) if isinstance(anchor_pitch, str) else anchor_pitch
anchor_index = self.pitch_scale.index(self.anchor_pitch)
if anchor_index == -1:
raise Exception(
'Anchor pitch \'{0}\' not found in pitch scale for tonality \'{1}\''
.format(self.anchor_pitch, self.tonality))
self.__pitch_unit = pitch_unit
self.anchor_value = anchor_value if anchor_value is not None else anchor_index * self.pitch_unit
# base value should map to beginning of pitch scale!
# recall that pitch unit maps to each pitch, making the scalar scale linear in value!
base_value = anchor_value - anchor_index * pitch_unit
self.value_to_pitch = OrderedMap()
self.pitch_to_value = dict()
for i in range(0, len(self.pitch_scale)):
pitch = self.pitch_scale[i]
value = base_value + i * pitch_unit
self.value_to_pitch.insert(value, pitch)
self.pitch_to_value[pitch] = value
PitchRangeInterpreter.__init__(self)
def test_find_pitch(self):
t_domain = Tonality.create(ModalityType.WholeTone, DiatonicTone('C'))
r = PitchRange.create('E:1', 'E:7')
f = DiatonicPitchReflectionFunction(
t_domain, DiatonicPitch(4, DiatonicToneCache.get_tone('G#')), r,
FlipType.UpperNeighborOfPair)
TestFlipOnTonality.print_map('test_find_pitch', f)
for t in t_domain.annotation:
p = DiatonicPitch(1, t)
closest_pitch, closest_distance = f._find_closest_pitch(p)
print('pitch {0} closest = ({1}, {2})'.format(
p, closest_pitch, closest_distance))
p = DiatonicPitch.parse("A:3")
closest_pitch, closest_distance = f._find_closest_pitch(p)
print('pitch {0} closest = ({1}, {2})'.format(p, closest_pitch,
closest_distance))
p = DiatonicPitch.parse("Ab:3")
closest_pitch, closest_distance = f._find_closest_pitch(p)
print('pitch {0} closest = ({1}, {2})'.format(p, closest_pitch,
closest_distance))
p = DiatonicPitch.parse("B:3")
closest_pitch, closest_distance = f._find_closest_pitch(p)
print('pitch {0} closest = ({1}, {2})'.format(p, closest_pitch,
closest_distance))
p = DiatonicPitch.parse("Cb:3")
closest_distance = f._find_closest_pitch(p)
print('pitch {0} closest = ({1}, {2})'.format(p, closest_pitch,
closest_distance))
p = DiatonicPitch.parse("C#:3")
closest_pitch, closest_distance = f._find_closest_pitch(p)
print('pitch {0} closest = ({1}, {2})'.format(p, closest_pitch,
closest_distance))