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 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 compute_closest_scale_tones(tonality, pitch):
"""
Returns either the pitch if in tonality, or lower/upper pitches in scale to pitch.
:param tonality:
:param pitch:
:return: an array with 1 element if exact match, otherwise closest lower and upper bound pitches
in given tonality.
"""
from tonalmodel.pitch_range import PitchRange
chromatic_index = pitch.chromatic_distance
pitch_range = PitchRange(
max(chromatic_index - 12, ChromaticScale.chromatic_start_index()),
min(chromatic_index + 12, ChromaticScale.chromatic_end_index()))
pitch_scale = PitchScale(tonality, pitch_range)
for i in range(0, len(pitch_scale.pitch_scale)):
p = pitch_scale.pitch_scale[i]
if p.chromatic_distance < chromatic_index:
continue
if p.chromatic_distance == chromatic_index:
return [p]
if i == 0:
raise Exception(
'unexpected logic issue in compute_closest_pitch_range {0}, {1]'
.format(tonality, pitch))
return [pitch_scale.pitch_scale[i - 1], p]
raise Exception(
'unexpected logic fail in compute_closest_pitch_range {0}, {1]'.
format(tonality, pitch))
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 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_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_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_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_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_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_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 _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_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_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 test_for_book_example_2(self):
print('----- test for book example 2 -----')
source_instance_expression = '{<A-Major:i> [sA:4 A A A] qA:4 [iA:4 A] <:iv> qA:4 [sA:4 A A A] qA:4}'
target_instance_expression = '{<G-Major:i> wA:4 <:iv> wA:4}'
lge = LineGrammarExecutor()
source_instance_line, source_instance_hct = lge.parse(
source_instance_expression)
actors = source_instance_line.get_all_notes()
for a in actors:
print("{0}".format(a))
target_instance_line, target_instance_hct = lge.parse(
target_instance_expression)
target_hcs = target_instance_hct.hc_list()
for hc in target_hcs:
print("{0}".format(hc))
pitch_range = PitchRange(
DiatonicPitch.parse('C:4').chromatic_distance,
DiatonicPitch.parse('C:6').chromatic_distance)
p_map = PMap.create(source_instance_expression, pitch_range,
[('G-Major:I', Duration(3, 4)),
('G-Major:IV', Duration(3, 4))])
actors = p_map.actors
policies = OrderedSet()
policies.add(
StepSequenceConstraint(
[actors[0], actors[1], actors[2], actors[3]], [1, 1, 1]))
policies.add(ChordalPitchConstraint(actors[0]))
policies.add(ChordalPitchConstraint(actors[4]))
policies.add(ChordalPitchConstraint(actors[8]))
policies.add(
StepSequenceConstraint(
[actors[8], actors[9], actors[10], actors[11]], [1, -1, -1]))
policies.add(EqualPitchConstraint([actors[0], actors[12]]))
policies.add(EqualPitchConstraint([actors[4], actors[7]]))
policies.add(
RelativeDiatonicConstraint(actors[4], actors[5],
Interval(3, IntervalType.Major),
Interval(1, IntervalType.Perfect)))
policies.add(StepSequenceConstraint([actors[5], actors[6]], [-1]))
# policies.add(ChordalPitchConstraint(actors[7]))
solver = PitchConstraintSolver(policies)
full_results, partial_results = solver.solve(p_map)
print('Results has {0} results.'.format(len(full_results)))
for pm in full_results:
if str(pm[actors[7]].note.diatonic_pitch) == 'D:4' and str(
pm[actors[0]].note.diatonic_pitch) == 'G:4':
print("{0}".format(pm))
def policy_creator(modality_type, modality_tone, tertian_chord_txt, low_pitch_txt, hi_pitch_txt):
diatonic_tonality = Tonality.create(modality_type, modality_tone)
chord = TertianChordTemplate.parse(tertian_chord_txt).create_chord(diatonic_tonality)
hc = HarmonicContext(diatonic_tonality, chord, Duration(1, 2))
pitch_range = PitchRange(DiatonicPitch.parse(low_pitch_txt).chromatic_distance,
DiatonicPitch.parse(hi_pitch_txt).chromatic_distance)
return PolicyContext(hc, pitch_range)
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 apply(self,
target_hct,
window_anchor_pitch,
tag_map=None,
window_height=None,
num_solutions=-1,
tunnel_half_interval=Interval(5, IntervalType.Perfect)):
"""
Apply method for transformation.
:param target_hct: Target hct for new target line.
:param window_anchor_pitch: Pitch specifying the lowest pitch for the target line window.
:param tag_map: map index of source/target note to specified pitch.
:param window_height: Height of target pitch window (in semi-tones) - use source line height if None specified.
:param num_solutions: Maximum number of solutions to return, -1 == unbounded.
:param tunnel_half_interval: half-interval for pitch range on each target tone.
:return: MCSResults
"""
if self.source_hct.duration != target_hct.duration:
raise Exception(
'Target hct duration {0} does not match source hct duration {1}.'
.format(target_hct.duration, self.source_hct.duration))
window_anchor_pitch = DiatonicPitch.parse(window_anchor_pitch) if isinstance(window_anchor_pitch, str) \
else window_anchor_pitch
target_line = self._build_target_line()
self.__tunnel_half_interval = tunnel_half_interval
source_notes = self.source_line.get_all_notes()
target_notes = target_line.get_all_notes()
source_to_target = {
source_note: target_note
for source_note, target_note in zip(source_notes, target_notes)
}
constraints = self._build_constraints(source_to_target, tag_map)
ts_seq, tempo_seq = THarmonicTranscription._build_default_time_sig_tempo(
)
height = window_height if window_height else self.height
pitch_range = PitchRange(
window_anchor_pitch.chromatic_distance,
window_anchor_pitch.chromatic_distance + height)
solver = MelodicConstraintSolver(target_line, tempo_seq, ts_seq,
target_hct, pitch_range, constraints)
initial_map = {target_notes[k]: v
for k, v in tag_map.items()} if tag_map else None
results = solver.solve(initial_map, num_solutions)
return results
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()])))