def test_motif_book_example(self):
s = Beam()
s.append(Note(DiatonicPitch.parse('C:4'), Duration(1, 8)))
s.append(Note(DiatonicPitch.parse('D:4'), Duration(1, 8)))
s.append(Note(DiatonicPitch.parse('C:4'), Duration(1, 8)))
s.append(Note(DiatonicPitch.parse('F#:4'), Duration(1, 8)))
notes = s.get_all_notes()
c = [
EqualPitchConstraint([notes[0], notes[2]]),
NotEqualPitchConstraint([notes[1], notes[3]])
]
m = Motif(s, c, 'A')
cs = Beam()
cs.append(Note(DiatonicPitch.parse('C:5'), Duration(1, 8)))
cs.append(Note(DiatonicPitch.parse('D:5'), Duration(1, 8)))
cs.append(Note(DiatonicPitch.parse('C:5'), Duration(1, 8)))
cs.append(Note(DiatonicPitch.parse('F#:5'), Duration(1, 8)))
c_motif = m.copy_to(cs.get_all_notes()[0])
assert 'A' == c_motif.name
assert len(c_motif.actors) == len(notes)
assert len(c_motif.constraints) == len(c)
assert isinstance(c_motif.constraints[0], EqualPitchConstraint)
assert c_motif.constraints[0].actors[0] == c_motif.actors[0]
assert c_motif.constraints[0].actors[1] == c_motif.actors[2]
assert isinstance(c_motif.constraints[1], NotEqualPitchConstraint)
assert c_motif.constraints[1].actors[0] == c_motif.actors[1]
assert c_motif.constraints[1].actors[1] == c_motif.actors[3]
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 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 motif_example():
print('----- motif_example (Fgure 17.25) -----')
line_str = '{<C-Major: I> iC:4 D E D E E E E C D E D E E E E C D E D E E E E wE}'
score = create_score(line_str, 'piano', (4, 4, 'swww'))
tonality = score.hct.get_hc_by_position(0).tonality
all_notes = score.line.get_all_notes()
constraints = {
StepSequenceConstraint(
[all_notes[0], all_notes[1], all_notes[2], all_notes[3]],
[1, 1, -1])
}
motif = Motif([all_notes[0], all_notes[1], all_notes[2], all_notes[3]],
constraints)
motif1 = motif.copy_to(all_notes[8])
motif2 = motif.copy_to(all_notes[16])
form = MelodicForm([motif, motif1, motif2])
# 11 scalar notes to C:4 (0) to G:5 (11) with pitch unit 1/11
interpreter = ScalarRangeInterpreter(tonality, DiatonicPitch.parse('C:4'),
0, Fraction(1, 11))
pitch_function = GenericUnivariatePitchFunction(three_sin, Position(0),
Position(3), False,
interpreter)
t_reshape = TReshape(score, pitch_function, Range(0, 3), 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]))
def test_book_example(self):
line_str = '{<C-Major: I> iC:4 D C F F A G A iC:5 D C F f A G A}'
lge = LineGrammarExecutor()
target_line, _ = lge.parse(line_str)
notes = target_line.get_all_notes()
ca = [
EqualPitchConstraint([notes[0], notes[2]]),
NotEqualPitchConstraint([notes[1], notes[3]])
]
cb = [
NotEqualPitchConstraint([notes[4], notes[5]]),
EqualPitchConstraint([notes[5], notes[7]])
]
a = Motif([notes[0], notes[1], notes[2], notes[3]], ca, 'A')
b = Motif([notes[4], notes[5], notes[6], notes[7]], cb, 'B')
phrase_constraints = [
EqualPitchConstraint([notes[3], notes[4]]),
]
phrase = Phrase([notes[2], notes[3], notes[4], notes[5]],
phrase_constraints, 'P1')
mf_constraints = [
NotEqualPitchConstraint([notes[2], notes[5]]),
]
mf = MelodicForm([a, b], [phrase], mf_constraints, 'MF1')
print('[{0}]'.format(','.join(
[str(n.diatonic_pitch) for n in mf.actors])))
mf_dup = mf.copy_to(notes[8])
print('[{0}]'.format(','.join(
[str(n.diatonic_pitch) for n in mf_dup.actors])))
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 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 test_piecewise_linear_reshape(self):
"""
This is a very interesting test case. Although it uses a piecewise linear based reshape function, more
importantly, the line's harmonic context track is in the key Bb-major, but the pitch function interprets
pitches in E-major!
The rule is to always use what the pitch function returns over the hct, except when the computed pitch has
an enharmonic equivalent - in this case, the only case is Eb == D#, and Eb is preferred.
:return:
"""
print('----- test_piecewise_linear_reshape -----')
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', 'e'),
('E:4', 'e'),
('E:4', 'e'),
('E:4', 'e'),
('E:4', 'e'),
('E:4', 'e'),
('E:4', 'e'),
('E:4', 'e'),
]
chords = [('tI', 1), ('tIV', (1, 2)), ('tV', (1, 2)), ('tVI', 1)]
score = TestTReshape.create_score(s_notes, ModalityType.Major, 'Bb', chords, 'violin', (4, 4, 'swww'))
e_interp = ScalarRangeInterpreter(Tonality.create(ModalityType.Major, DiatonicToneCache.get_tone('E')), 'E:4',
0)
array = [(0, 0), (Fraction(1, 2), 4), (Fraction(1), 0), (Fraction(2), 8)]
f = PiecewiseLinearFunction(array)
pitch_function = GenericUnivariatePitchFunction(f, Position(0), Position(2), False,
e_interp)
all_notes = score.line.get_all_notes()
# The first note should have one of 2 values, Eb:4, G:4
constraints = {
ChordalPitchConstraint(all_notes[0]),
}
motif = Motif(score.line, constraints, 'A')
melodic_form = MelodicForm([motif])
time_range = Range(0, 3)
treshape = TReshape(score, pitch_function, time_range, melodic_form, True)
results = treshape.apply()
assert results is not None
for i in range(0, len(results)):
print('--- result[{0}] ---'.format(i))
print(results[i].line)
assert len(results) == 2
first_pitch_set = {str(result.line.get_all_notes()[0].diatonic_pitch) for result in results}
assert {'D:4', 'F:4'} == first_pitch_set
all_notes = results[0].line.get_all_notes()
assert 'F#:4' == str(all_notes[1].diatonic_pitch)
assert 'G#:4' == str(all_notes[2].diatonic_pitch)
assert 'A:4' == str(all_notes[3].diatonic_pitch)
assert 'B:4' == str(all_notes[4].diatonic_pitch)
assert 'A:4' == str(all_notes[5].diatonic_pitch)
assert 'G#:4' == str(all_notes[6].diatonic_pitch)
assert 'F#:4' == str(all_notes[7].diatonic_pitch)
assert 'E:4' == str(all_notes[8].diatonic_pitch)
assert 'F#:4' == str(all_notes[9].diatonic_pitch)
assert 'G#:4' == str(all_notes[10].diatonic_pitch)
assert 'A:4' == str(all_notes[11].diatonic_pitch)
assert 'B:4' == str(all_notes[12].diatonic_pitch)
assert 'C#:5' == str(all_notes[13].diatonic_pitch)
assert 'Eb:5' == str(all_notes[14].diatonic_pitch)
all_notes = results[1].line.get_all_notes()
assert 'F#:4' == str(all_notes[1].diatonic_pitch)
assert 'G#:4' == str(all_notes[2].diatonic_pitch)
assert 'A:4' == str(all_notes[3].diatonic_pitch)
assert 'B:4' == str(all_notes[4].diatonic_pitch)
assert 'A:4' == str(all_notes[5].diatonic_pitch)
assert 'G#:4' == str(all_notes[6].diatonic_pitch)
assert 'F#:4' == str(all_notes[7].diatonic_pitch)
assert 'E:4' == str(all_notes[8].diatonic_pitch)
assert 'F#:4' == str(all_notes[9].diatonic_pitch)
assert 'G#:4' == str(all_notes[10].diatonic_pitch)
assert 'A:4' == str(all_notes[11].diatonic_pitch)
assert 'B:4' == str(all_notes[12].diatonic_pitch)
assert 'C#:5' == str(all_notes[13].diatonic_pitch)
assert 'Eb:5' == str(all_notes[14].diatonic_pitch)
def test_pitch_sequence_shape(self):
print('----- test_pitch_sequence_shape -----')
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', 'e'),
('E:4', 'e'),
('E:4', 'e'),
('E:4', 'e'),
('E:4', 'e'),
('E:4', 'e'),
('E:4', 'e'),
('E:4', 'e'),
]
chords = [('tI', 1), ('tIV', 1), ('tV', 1), ('tVI', 1)]
score = TestTReshape.create_score(s_notes, ModalityType.Major, 'Bb', chords, 'violin', (4, 4, 'swww'))
all_notes = score.line.get_all_notes()
eflat_interp = ScalarRangeInterpreter(Tonality.create(ModalityType.Major, DiatonicToneCache.get_tone('Bb')),
'Bb:3', 0)
pitch_function = GenericUnivariatePitchFunction(TestTReshape.e_flat_linear, Position(0), Position(1), False,
eflat_interp)
# The first note should have one of 2 values, Eb:4, G:4
constraints = {
ChordalPitchConstraint(all_notes[0]),
# You need this kind of constraint to limit possibilities.
PitchRangeConstraint([all_notes[0]], PitchRange.create('Bb:3', 'A:4')),
StepSequenceConstraint([all_notes[3], all_notes[4], all_notes[5], all_notes[6]], [-1, -1, -1]),
}
motif = Motif(score.line, constraints, 'A')
melodic_form = MelodicForm([motif])
time_range = Range(0, 3)
treshape = TReshape(score, pitch_function, time_range, melodic_form, True)
results = treshape.apply()
assert results is not None
for i in range(0, len(results)):
print('--- result[{0}] ---'.format(i))
print(results[i].line)
for result in results:
notes = result.line.get_all_notes()
if str(notes[3].diatonic_pitch) == 'Eb:4':
assert 'D:4' == str(notes[4].diatonic_pitch)
assert 'C:4' == str(notes[5].diatonic_pitch)
assert 'Bb:3' == str(notes[6].diatonic_pitch)
else:
assert 'D:4' == str(notes[3].diatonic_pitch)
assert 'C:4' == str(notes[4].diatonic_pitch)
assert 'Bb:3' == str(notes[5].diatonic_pitch)
assert 'A:3' == str(notes[6].diatonic_pitch)
def test_onbeat_shape(self):
print('----- test_onbeat_shape -----')
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'),
]
chords = [('tI', 1), ('tIV', (1, 2)), ('tV', (1, 2)), ('tVI', 1)]
score = TestTReshape.create_score(s_notes, ModalityType.Major, 'Bb', chords, 'violin', (4, 4, 'swww'))
all_notes = score.line.get_all_notes()
# The first note should have one of 2 values, Eb:4, G:4
constraints = {
ChordalPitchConstraint(all_notes[0]),
OnBeatConstraint(all_notes[2], BeatType.Strong),
# You need this kind of constraint to limit possibilities.
PitchRangeConstraint([all_notes[0]], PitchRange.create('Bb:3', 'A:4')),
}
motif = Motif(score.line, constraints, 'A')
melodic_form = MelodicForm([motif])
eflat_interp = ScalarRangeInterpreter(Tonality.create(ModalityType.Major, DiatonicToneCache.get_tone('Bb')),
'Bb:3', 0)
pitch_function = GenericUnivariatePitchFunction(TestTReshape.e_flat_linear, Position(0), Position(1), False,
eflat_interp)
time_range = Range(0, 3)
treshape = TReshape(score, pitch_function, time_range, melodic_form, False)
results = treshape.apply()
assert results is not None
for i in range(0, len(results)):
print('--- result[{0}] ---'.format(i))
print(results[i].line)
first_pitch_set = {str(result.line.get_all_notes()[0].diatonic_pitch) for result in results}
assert {'Bb:3', 'D:4', 'F:4'} == first_pitch_set
all_notes = results[0].line.get_all_notes()
assert 'C:4' == str(all_notes[1].diatonic_pitch)
assert 'C:5' == str(all_notes[2].diatonic_pitch)
assert 'D:5' == str(all_notes[3].diatonic_pitch)
assert 'Eb:5' == str(all_notes[4].diatonic_pitch)
assert 'F:5' == str(all_notes[5].diatonic_pitch)
assert 'G:5' == str(all_notes[6].diatonic_pitch)
assert 'A:5' == str(all_notes[7].diatonic_pitch)
assert Position(1) == all_notes[2].get_absolute_position()
all_notes = results[1].line.get_all_notes()
assert 'C:4' == str(all_notes[1].diatonic_pitch)
assert 'C:5' == str(all_notes[2].diatonic_pitch)
assert 'D:5' == str(all_notes[3].diatonic_pitch)
assert 'Eb:5' == str(all_notes[4].diatonic_pitch)
assert 'F:5' == str(all_notes[5].diatonic_pitch)
assert 'G:5' == str(all_notes[6].diatonic_pitch)
assert 'A:5' == str(all_notes[7].diatonic_pitch)
assert Position(1) == all_notes[2].get_absolute_position()
def test_linear_scale(self):
print('----- test_linear_scale -----')
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'),
]
chords = [('tI', 1), ('tIV', (1, 2)), ('tV', (1, 2)), ('tVI', 1)]
score = TestTReshape.create_score(s_notes, ModalityType.Major, 'Eb', chords, 'violin', (3, 4, 'sww'))
all_notes = score.line.get_all_notes()
eflat_interp = ScalarRangeInterpreter(Tonality.create(ModalityType.Major, DiatonicToneCache.get_tone('Eb')),
'Eb:4', 0)
pitch_function = GenericUnivariatePitchFunction(TestTReshape.e_flat_linear, Position(0), Position(1), False,
eflat_interp)
time_range = Range(0, 3)
# The first note should have one of 2 values, Eb: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)
results = treshape.apply()
assert results is not None
assert len(results) == 2
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 {'Eb:4', 'G:4'} == first_pitch_set
all_notes = results[0].line.get_all_notes()
assert 'F:4' == str(all_notes[1].diatonic_pitch)
assert 'G:4' == str(all_notes[2].diatonic_pitch)
assert 'Ab:4' == str(all_notes[3].diatonic_pitch)
assert 'Bb:4' == str(all_notes[4].diatonic_pitch)
assert 'C:5' == str(all_notes[5].diatonic_pitch)
assert 'D:5' == str(all_notes[6].diatonic_pitch)
assert 'Eb:5' == str(all_notes[7].diatonic_pitch)
all_notes = results[1].line.get_all_notes()
assert 'F:4' == str(all_notes[1].diatonic_pitch)
assert 'G:4' == str(all_notes[2].diatonic_pitch)
assert 'Ab:4' == str(all_notes[3].diatonic_pitch)
assert 'Bb:4' == str(all_notes[4].diatonic_pitch)
assert 'C:5' == str(all_notes[5].diatonic_pitch)
assert 'D:5' == str(all_notes[6].diatonic_pitch)
assert 'Eb:5' == str(all_notes[7].diatonic_pitch)
def test_richer_structure(self):
line = Line()
s = Beam()
s.append(Note(DiatonicPitch.parse('C:4'), Duration(1, 8)))
s.append(Note(DiatonicPitch.parse('D:4'), Duration(1, 8)))
line.pin(s)
q1 = Note(DiatonicPitch.parse('E:4'), Duration(1, 4))
line.pin(q1, Offset(1, 4))
q2 = Note(DiatonicPitch.parse('F#:4'), Duration(1, 4))
line.pin(q2, Offset(1, 2))
cs = Beam()
first_note = Note(DiatonicPitch.parse('C:3'), Duration(1, 8))
cs.append(first_note)
cs.append(Note(DiatonicPitch.parse('D:3'), Duration(1, 8)))
line.pin(cs, Offset(2))
cq1 = Note(DiatonicPitch.parse('E:3'), Duration(1, 4))
line.pin(cq1, Offset(9, 4))
cq2 = Note(DiatonicPitch.parse('F#:3'), Duration(1, 4))
line.pin(cq2, Offset(5, 2))
notes = line.get_all_notes()
c = [
EqualPitchConstraint([notes[0], notes[2]]),
NotEqualPitchConstraint([notes[1], notes[3]])
]
m = Motif([s, q1, q2], c, 'A')
print(m)
actors = m.actors
assert 'A' == m.name
assert len(actors) == 4
cc = m.constraints
assert len(cc) == len(c)
assert isinstance(cc[0], EqualPitchConstraint)
cc_a = cc[0].actors
assert len(cc_a) == 2
assert cc_a[0] == actors[0]
assert cc_a[1] == actors[2]
assert isinstance(cc[1], NotEqualPitchConstraint)
cc_b = cc[1].actors
assert len(cc_a) == 2
assert cc_b[0] == actors[1]
assert cc_b[1] == actors[3]
assert 'F#:4' == str(actors[3].diatonic_pitch)
c_motif = m.copy_to(first_note)
assert c_motif is not None
c_actors = c_motif.actors
assert 'A' == c_motif.name
assert len(c_actors) == 4
ccc = c_motif.constraints
assert len(ccc) == len(c)
assert isinstance(ccc[0], EqualPitchConstraint)
ccc_a = ccc[0].actors
assert len(ccc_a) == 2
assert ccc_a[0] == c_actors[0]
assert ccc_a[1] == c_actors[2]
assert isinstance(ccc[1], NotEqualPitchConstraint)
ccc_b = ccc[1].actors
assert len(ccc_a) == 2
assert ccc_b[0] == c_actors[1]
assert ccc_b[1] == c_actors[3]
assert 'F#:3' == str(c_actors[3].diatonic_pitch)
print(c_motif)
def test_simple_motif(self):
s = Beam()
s.append(Note(DiatonicPitch.parse('C:4'), Duration(1, 8)))
s.append(Note(DiatonicPitch.parse('D:4'), Duration(1, 8)))
s.append(Note(DiatonicPitch.parse('E:4'), Duration(1, 8)))
s.append(Note(DiatonicPitch.parse('F#:4'), Duration(1, 8)))
notes = s.get_all_notes()
c = [
EqualPitchConstraint([notes[0], notes[2]]),
NotEqualPitchConstraint([notes[1], notes[3]])
]
m = Motif(s, c, 'A')
actors = m.actors
assert 'A' == m.name
assert len(actors) == len(notes)
cc = m.constraints
assert len(cc) == len(c)
assert isinstance(cc[0], EqualPitchConstraint)
cc_a = cc[0].actors
assert len(cc_a) == 2
assert cc_a[0] == actors[0]
assert cc_a[1] == actors[2]
assert isinstance(cc[1], NotEqualPitchConstraint)
cc_b = cc[1].actors
assert len(cc_a) == 2
assert cc_b[0] == actors[1]
assert cc_b[1] == actors[3]
assert 'F#:4' == str(actors[3].diatonic_pitch)
print(m)
cs = Beam()
first_note = Note(DiatonicPitch.parse('C:3'), Duration(1, 8))
cs.append(first_note)
cs.append(Note(DiatonicPitch.parse('D:3'), Duration(1, 8)))
cs.append(Note(DiatonicPitch.parse('E:3'), Duration(1, 8)))
cs.append(Note(DiatonicPitch.parse('F#:3'), Duration(1, 8)))
c_motif = m.copy_to(first_note)
c_actors = c_motif.actors
assert 'A' == c_motif.name
assert len(c_actors) == len(notes)
ccc = c_motif.constraints
assert len(ccc) == len(c)
assert isinstance(ccc[0], EqualPitchConstraint)
ccc_a = ccc[0].actors
assert len(ccc_a) == 2
assert ccc_a[0] == c_actors[0]
assert ccc_a[1] == c_actors[2]
assert isinstance(ccc[1], NotEqualPitchConstraint)
ccc_b = ccc[1].actors
assert len(ccc_a) == 2
assert ccc_b[0] == c_actors[1]
assert ccc_b[1] == c_actors[3]
assert 'F#:3' == str(c_actors[3].diatonic_pitch)
print(c_motif)
def reshape_with_spf():
print('----- test_reshape_with_spf (Fgure 17.22) -----')
line_str = '{<C-Major: I> iE:4 E E E E q@E <:IV> qE ie e <:V> qe ie e <:VI> qE E iE E E E}'
score = create_score(line_str, 'piano', (3, 4, 'sww'))
tonality = score.hct.get_hc_by_position(0).tonality
all_notes = score.line.get_all_notes()
# 11 scalar notes to C:4 (0) to G:5 (11) with pitch unit 1/11
interpreter = ScalarRangeInterpreter(tonality, DiatonicPitch.parse('C:4'),
0, Fraction(1, 11))
pitch_function = GenericUnivariatePitchFunction(three_sin, Position(0),
Position(3), False,
interpreter)
# The first note should have one of 3 values, C:4, E:4, G:4
constraints = {
ChordalPitchConstraint(all_notes[0]),
ChordalPitchConstraint(all_notes[6]),
ChordalPitchConstraint(all_notes[9]),
ChordalPitchConstraint(all_notes[12]),
PitchRangeConstraint([all_notes[0]], PitchRange.create('C:4', 'E:4')),
}
motif = Motif([all_notes[0], all_notes[6], all_notes[9], all_notes[12]],
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]))
constraints = {
ChordalPitchConstraint(all_notes[0]),
ChordalPitchConstraint(all_notes[4]),
ChordalPitchConstraint(all_notes[6]),
ChordalPitchConstraint(all_notes[8]),
ChordalPitchConstraint(all_notes[12]),
ChordalPitchConstraint(all_notes[14]),
PitchRangeConstraint([all_notes[0]], PitchRange.create('C:4', 'G:4')),
}
motif = Motif(score.line, 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]))
def test_simple_form(self):
line = Line()
s = Beam()
s.append(Note(DiatonicPitch.parse('C:4'), Duration(1, 8)))
s.append(Note(DiatonicPitch.parse('D:4'), Duration(1, 8)))
s.append(Note(DiatonicPitch.parse('E:4'), Duration(1, 8)))
s.append(Note(DiatonicPitch.parse('F#:4'), Duration(1, 8)))
line.pin(s)
notes = s.get_all_notes()
c = [
EqualPitchConstraint([notes[0], notes[2]]),
NotEqualPitchConstraint([notes[1], notes[3]])
]
a = Motif(s, c, 'A')
s1 = [
Note(DiatonicPitch(4, 'c'), Duration(1, 8)),
Note(DiatonicPitch(4, 'd'), Duration(1, 8)),
Note(DiatonicPitch(4, 'e'), Duration(1, 8)),
]
tuplet = Tuplet(Duration(1, 8), 2, s1)
line.pin(tuplet, Offset(1, 2))
notes = tuplet.get_all_notes()
c1 = [
EqualPitchConstraint([notes[0], notes[2]]),
RelativeScalarStepConstraint(notes[1], notes[2], -2, 2)
]
b = Motif(tuplet, c1, 'B')
f = Form([a, b])
print(f)
constraints = [
EqualPitchConstraint([a.actors[0], b.actors[1]])
]
# Ensure a, b cloned for reliability - see comment in Form.
ff = Form([a, b], constraints)
print(ff)
constr = ff.external_constraints
assert len(constr) == 1
actors = ff.actors
assert len(actors) == 7
assert isinstance(constr[0], EqualPitchConstraint)
assert constr[0].actors[0] == actors[0]
assert constr[0].actors[1] == actors[4 + 1]
all_constr = ff.constraints
assert len(all_constr) == 5
# Add more notes to clone ff as:
s3 = Beam()
first_note = Note(DiatonicPitch.parse('C:5'), Duration(1, 8))
s3.append(first_note)
s3.append(Note(DiatonicPitch.parse('D:5'), Duration(1, 8)))
s3.append(Note(DiatonicPitch.parse('E:5'), Duration(1, 8)))
s3.append(Note(DiatonicPitch.parse('F#:5'), Duration(1, 8)))
line.pin(s3, Offset(3))
s2 = [
Note(DiatonicPitch(5, 'c'), Duration(1, 8)),
Note(DiatonicPitch(5, 'd'), Duration(1, 8)),
Note(DiatonicPitch(5, 'e'), Duration(1, 8)),
]
tuplet1 = Tuplet(Duration(1, 8), 2, s2)
line.pin(tuplet1, Offset(7, 2))
fff = ff.copy_to(first_note)
assert fff is not None
print(fff)
constr = fff.external_constraints
assert len(constr) == 1
assert len(fff.constraints) == 5
actors = fff.actors
assert len(actors) == 7
assert isinstance(constr[0], EqualPitchConstraint)
assert constr[0].actors[0] == actors[0]
assert constr[0].actors[1] == actors[4 + 1]
all_constr = fff.constraints
assert len(all_constr) == 5
def test_simple_form(self):
line = Line()
notes = [
Note(DiatonicPitch.parse('C:4'), Duration(1, 8)),
Note(DiatonicPitch.parse('D:4'), Duration(1, 8)),
Note(DiatonicPitch.parse('E:4'), Duration(1, 8)),
Note(DiatonicPitch.parse('F:4'), Duration(1, 8)),
Note(DiatonicPitch.parse('G:4'), Duration(1, 8)),
Note(DiatonicPitch.parse('A:4'), Duration(1, 8)),
Note(DiatonicPitch.parse('B:4'), Duration(1, 8)),
Note(DiatonicPitch.parse('C:4'), Duration(1, 4)),
Note(DiatonicPitch.parse('C:3'), Duration(1, 8)),
Note(DiatonicPitch.parse('D:3'), Duration(1, 8)),
Note(DiatonicPitch.parse('E:3'), Duration(1, 8)),
Note(DiatonicPitch.parse('F:3'), Duration(1, 8)),
Note(DiatonicPitch.parse('G:3'), Duration(1, 8)),
Note(DiatonicPitch.parse('A:3'), Duration(1, 8)),
Note(DiatonicPitch.parse('B:3'), Duration(1, 8)),
Note(DiatonicPitch.parse('C:3'), Duration(1, 4)),
]
f = Fraction(0)
for n in notes:
line.pin(n, Offset(f))
f = f + n.duration.duration
ca = [
EqualPitchConstraint([notes[0], notes[2]]),
NotEqualPitchConstraint([notes[1], notes[3]])
]
cb = [
NotEqualPitchConstraint([notes[4], notes[5]]),
EqualPitchConstraint([notes[6], notes[7]])
]
a = Motif([notes[0], notes[1], notes[2], notes[3]], ca, 'A')
b = Motif([notes[4], notes[5], notes[6], notes[7]], cb, 'B')
p1_constraints = [
EqualPitchConstraint([notes[4], notes[5]]),
]
p1 = Phrase([notes[2], notes[3], notes[4], notes[5]], p1_constraints,
'P1')
mf_constraints = [
EqualPitchConstraint([notes[2], notes[5]]),
]
mf = MelodicForm([a, b], [p1], mf_constraints, 'MF1')
actors = mf.actors
assert actors is not None
assert len(actors) == 8
assert actors[0] == notes[0]
motifs = mf.motifs
assert motifs is not None
assert len(motifs) == 2
assert motifs[0].name == 'A'
assert motifs[1].name == 'B'
p_constraints = mf.phrase_constraints
assert p_constraints is not None
assert len(p_constraints) == 1
assert type(p_constraints[0]) == EqualPitchConstraint
p_actors = mf.phrase_actors
assert p_actors is not None
assert len(p_actors) == 4
mf1 = mf.copy_to(notes[8])
assert mf1 is not None
actors = mf1.actors
assert actors is not None
assert len(actors) == 8
assert actors[0] == notes[8]
motifs = mf1.motifs
assert motifs is not None
assert len(motifs) == 2
assert motifs[0].name == 'A'
assert motifs[1].name == 'B'
p_constraints = mf1.phrase_constraints
assert p_constraints is not None
assert len(p_constraints) == 1
assert type(p_constraints[0]) == EqualPitchConstraint
p_actors = mf1.phrase_actors
assert p_actors is not None
assert len(p_actors) == 4
phs = mf1.phrases
assert phs is not None
assert len(phs) == 1
assert phs[0].actors[0] == notes[10]