def test_step_wise_tempo(self):
t_lo_steady = Tempo(TempoType.Grave)
event0 = TempoEvent(t_lo_steady, Position(0))
settings = [
Tempo(TempoType.Grave),
Tempo(TempoType.Allegrissimo),
Tempo(TempoType.Moderato),
Tempo(TempoType.Largo),
Tempo(TempoType.Vivace)
]
steps = [(Position(0), settings[0].tempo),
(Position(10), settings[1].tempo),
(Position(20), settings[2].tempo),
(Position(30), settings[3].tempo),
(Position(40), settings[4].tempo)]
f = StepwiseFunction(steps)
event1 = TempoFunctionEvent(f, Position(10))
t_hi_steady = Tempo(TempoType(TempoType.Vivace))
event2 = TempoEvent(t_hi_steady, Position(50))
tes = TempoEventSequence([event0, event1, event2])
assert tes.tempo(Position(0)) == t_lo_steady.tempo
assert tes.tempo(Position(5)) == t_lo_steady.tempo
assert tes.tempo(Position(10)) == settings[0].tempo
assert tes.tempo(Position(20)) == settings[1].tempo
assert tes.tempo(Position(30)) == settings[2].tempo
assert tes.tempo(Position(40)) == settings[3].tempo
assert tes.tempo(Position(50)) == settings[4].tempo
assert tes.tempo(Position(60)) == t_hi_steady.tempo
def test_basic_sequence(self):
settings = [
Tempo(TempoType.Grave),
Tempo(TempoType.Allegrissimo),
Tempo(TempoType.Moderato),
Tempo(TempoType.Largo),
Tempo(TempoType.Vivace),
]
events = [
TempoFunctionEvent(settings[0], Position(0)),
TempoFunctionEvent(settings[1], Position(10)),
TempoFunctionEvent(settings[2], Position(20)),
TempoFunctionEvent(settings[3], Position(40)),
TempoFunctionEvent(settings[4], Position(60))
]
tes = TempoEventSequence(events)
print(tes)
assert tes.tempo(Position(0)) == settings[0].tempo
assert tes.tempo(Position(10)) == settings[1].tempo
assert tes.tempo(Position(20)) == settings[2].tempo
assert tes.tempo(Position(40)) == settings[3].tempo
assert tes.tempo(Position(60)) == settings[4].tempo
assert tes.tempo(Position(15)) == settings[1].tempo
assert tes.tempo(Position(45)) == settings[3].tempo
def test_accel_decel_sequence(self):
t_low = Tempo(TempoType.Moderato)
event0 = TempoFunctionEvent(t_low, Position(0))
t_hi = Tempo(TempoType.Vivace)
array = [(Position(10), t_low.tempo), (Position(30), t_hi.tempo)]
f = PiecewiseLinearFunction(array)
event1 = TempoFunctionEvent(f, Position(10))
event2 = TempoFunctionEvent(t_hi, Position(40))
tes = TempoEventSequence([event0, event1, event2])
print(tes)
assert tes.tempo(Position(0)) == t_low.tempo
assert tes.tempo(Position(10)) == t_low.tempo
assert tes.tempo(Position(40)) == t_hi.tempo
assert tes.tempo(Position(25)) == (t_low.tempo + t_hi.tempo) / 2.0
assert tes.tempo(
Position(30)) == t_low.tempo + (2 *
(t_hi.tempo - t_low.tempo) / 3.0)
assert tes.tempo(Position(50)) == t_hi.tempo
t_hi = Tempo(TempoType.Vivace)
t_low = Tempo(TempoType.Moderato)
event0 = TempoFunctionEvent(t_hi, Position(0))
array = [(Position(10), t_hi.tempo), (Position(30), t_low.tempo)]
f = PiecewiseLinearFunction(array)
event1 = TempoFunctionEvent(f, Position(10))
event2 = TempoFunctionEvent(t_low, Position(40))
tes = TempoEventSequence([event0, event1, event2])
print(tes)
assert tes.tempo(Position(0)) == t_hi.tempo
assert tes.tempo(Position(10)) == t_hi.tempo
assert tes.tempo(Position(40)) == t_low.tempo
assert tes.tempo(Position(25)) == (t_low.tempo + t_hi.tempo) / 2.0
assert tes.tempo(
Position(30)) == t_hi.tempo - (2 *
(t_hi.tempo - t_low.tempo) / 3.0)
assert tes.tempo(Position(50)) == t_low.tempo
