def test_scalar_transposition_in_place(major_scale):
transformations.scalar_transposition(major_scale, 1, in_place=True)
intended_result = converter.parse("tinyNotation: C# E- F F# A- B- c c#")
assert list(major_scale.flat.notes) == list(intended_result.flat.notes)
def test_scalar_transposition_different_scales(major_scale):
result = transformations.scalar_transposition(
major_scale, 1, reference_scale=scales.PentatonicScale("C"))
intended_result = converter.parse("tinyNotation: D E G G A c c d")
assert list(result.flat.notes) == list(intended_result.flat.notes)
def test_scalar_transposition(major_scale):
result = transformations.scalar_transposition(major_scale, 1)
intended_result = converter.parse("tinyNotation: C# E- F F# A- B- c c#")
assert list(result.flat.notes) == list(intended_result.flat.notes)
def test_scalar_transposition_reference_scale(pentatonic_scale):
result = transformations.scalar_transposition(
pentatonic_scale, 2, reference_scale=scales.PentatonicScale("C"))
intended_result = converter.parse("tinyNotation: E G A c d e")
assert list(result.flat.notes) == list(intended_result.flat.notes)
# --------------------------------------------------------------------------------------------------
# Build the piece
# --------------------------------------------------------------------------------------------------
# Create streams
right_hand = stream.Part()
left_hand = stream.Part()
left_hand.clef = clef.TrebleClef()
# Main Loop to build the nine sections
for section_index in range(8):
# Right hand
# -----------------------------------------------------------------------------------------
# Create the m-voice
m_voice = transformations.scalar_transposition(core_melody,
section_index * -2,
reference_scale)
# Create the t-voice
t_voice = tintinnabuli.create_t_voice(
m_voice, t_chord, position=2, direction=tintinnabuli.Direction.DOWN)
# Merge and append right hand streams
tools.append_stream(right_hand,
tools.merge_streams(m_voice, t_voice).chordify())
# Append right hand interlude
tools.append_stream(right_hand, _right_hand_interlude())
if section_index < 6:
right_hand.append(
clef.TrebleClef()) # Add treble clef except for last section