def test_book_example(self):
# Interpreter 0__.C:4 and each step of 1/12 maps to noew chromatic
interpreter = ChromaticRangeInterpreter(DiatonicPitch.parse('C:4'), 0,
Fraction(1, 12))
# local_sin maps 0->0 .25->1 .5->0 .75->-1 1->0 and so on.
f = GenericUnivariatePitchFunction(local_sin, Position(0), Position(2),
False, interpreter)
for i in range(0, 9):
p = f.eval_as_nearest_pitch(i * 0.25)
print('[{0}] {1}'.format((i * 0.25), str(p)))
def test_generic_sin(self):
f = GenericUnivariatePitchFunction(
TestGenericUnivariatePitchFunction.sinasoidal, Position(0),
Position(2))
factor = 32
for i in range(0, factor + 1):
p = Fraction(i, factor)
d = f.eval_as_chromatic_distance(p)
np = f.eval_as_nearest_pitch(p)
choices = TestGenericUnivariatePitchFunction.print_choices(
f.eval_as_pitch(p))
txt = '[{0}] chrom={1} near_p={2} choices={3}'.format(
i, d, np, choices)
print(txt)
# test
p = Fraction(5, factor)
d = f.eval_as_chromatic_distance(p)
np = f.eval_as_nearest_pitch(p)
choices = f.eval_as_pitch(p)
assert 2 == len(choices)
assert 'D#:5' == str(choices[0])
assert 'E:5' == str(choices[1])
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 test_compute_with_minor_key(self):
print('-- test_compute_with_minor_key ---')
line = Line()
f = GenericUnivariatePitchFunction(
TestFitPitchToFunctionConstraint.sinasoidal, Position(0),
Position(2))
v_notes = [
Note(DiatonicPitch.parse('A:4'), Duration(1, 16))
for _ in range(0, 33)
]
for i in range(0, 33):
line.pin(v_notes[i], Offset(i, 16))
constraint, lower_policy_context = \
TestFitPitchToFunctionConstraint.build_simple_constraint(v_notes[0], f, ModalityType.NaturalMinor,
'C', 'tV')
constraints = list()
constraints.append(constraint)
for i in range(1, 33):
c, _ = \
TestFitPitchToFunctionConstraint.build_simple_constraint(v_notes[i], f, ModalityType.NaturalMinor,
'C', 'tV')
constraints.append(c)
p_map = PMap()
p_map[v_notes[0]] = ContextualNote(lower_policy_context)
results = constraint.values(p_map, v_notes[0])
assert results is not None
assert len(results) == 1
print(next(iter(results)).diatonic_pitch)
assert 'C:4' == str(next(iter(results)).diatonic_pitch)
result_pitches = []
for i in range(0, 33):
p_map = PMap()
p_map[v_notes[i]] = ContextualNote(lower_policy_context)
results = constraints[i].values(p_map, v_notes[i])
result_pitches.append(next(iter(results)).diatonic_pitch)
assert len(result_pitches) == 33
for i in range(0, 33):
print('[{0}] {1}'.format(i, str(result_pitches[i])))
checks = [
'C:4', 'G:4', 'D:5', 'F:5', 'G:5', 'F:5', 'D:5', 'G:4', 'C:4'
]
for i in range(0, len(checks)):
assert checks[i] == str(result_pitches[i])
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 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_compute_simple_function_tone(self):
print('--- test_compute_simple_function_tone ---')
line = Line()
f = GenericUnivariatePitchFunction(
TestFitPitchToFunctionConstraint.sinasoidal, Position(0),
Position(2))
v_note = Note(DiatonicPitch.parse('A:4'), Duration(1, 32))
line.pin(v_note, Offset(0))
constraint, lower_policy_context = TestFitPitchToFunctionConstraint.build_simple_constraint(
v_note, f, ModalityType.Major, 'G', 'tV')
p_map = PMap()
p_map[v_note] = ContextualNote(lower_policy_context)
results = constraint.values(p_map, v_note)
assert results is not None
assert len(results) == 1
print(next(iter(results)).diatonic_pitch)
assert 'C:4' == str(next(iter(results)).diatonic_pitch)
v_note = Note(DiatonicPitch.parse('A:4'), Duration(1, 32))
line.pin(v_note, Offset(1, 32))
constraint, lower_policy_context = TestFitPitchToFunctionConstraint.build_simple_constraint(
v_note, f, ModalityType.Major, 'G', 'tV')
p_map = PMap()
p_map[v_note] = ContextualNote(lower_policy_context)
results = constraint.values(p_map, v_note)
assert results is not None
assert len(results) == 1
print(next(iter(results)).diatonic_pitch)
assert 'E:4' == str(next(iter(results)).diatonic_pitch)
p_map[v_note].note = next(iter(results))
assert constraint.verify(p_map)
def test_differing_keys(self):
print('--- test_differing_keys ---')
bflat_interp = ScalarRangeInterpreter(
Tonality.create(ModalityType.Major,
DiatonicToneCache.get_tone('Bb')), 'Bb:3', 0)
pitch_function = GenericUnivariatePitchFunction(
TestPitchFitFunction.e_flat_linear, Position(0), Position(1),
False, bflat_interp)
chords = [('tI', 1), ('tIV', (1, 2)), ('tV', (1, 2)), ('tVI', 1)]
hct, tempo_sequence, ts_sequence = TestPitchFitFunction.create_score_artifacts(
ModalityType.Major, 'E', chords, (4, 4, 'swww'))
pitch_fit_function = PitchFitFunction(pitch_function, tempo_sequence,
ts_sequence, hct)
p = Position(0)
d = Duration(1, 16)
pitches = list()
for i in range(0, 32):
pitch = pitch_fit_function(p)
print('f({0}) = {1}'.format(p, pitch))
pitches.append(pitch)
p = p + d
assert pitches[0] is None
assert 'C:4' == str(pitches[1])
assert 'D:4' == str(pitches[2])
assert 'D#:4' == str(pitches[3])
assert 'F:4' == str(pitches[4])
assert 'G:4' == str(pitches[5])
assert 'A:4' == str(pitches[6])
assert 'Bb:4' == str(pitches[7])
assert 'C:5' == str(pitches[8])
assert 'D:5' == str(pitches[9])
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 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]))
