def note_minus_intvl(note_obj, intvl_obj):
from pymusician import Note, Interval
if not isinstance(intvl_obj, Interval):
raise ValueError("Intervals can only be added to Note objects.")
letter = note_obj.letter - intvl_obj.letter_diff
if letter < 0:
letter += 7
if note_obj.octave != 0:
hard_pitch = note_obj.hard_pitch - intvl_obj.diff
new_note = Note.from_values(letter, abs(hard_pitch % 12))
new_note.octave = hard_pitch // 12
else:
pitch = note_obj.pitch - intvl_obj.diff
if intvl_obj._displace > 0:
pitch -= intvl_obj._displace * 12
if pitch < 0:
pitch += 12
new_note = Note.from_values(letter, pitch)
if note_obj.rhythm:
print(note_obj.rhythm)
new_note.rhythm = note_obj.rhythm.flags
return new_note
def note_minus_intvl(note_obj,intvl_obj):
from pymusician import Note, Interval
if not isinstance(intvl_obj,Interval):
raise ValueError("Intervals can only be added to Note objects.")
letter = note_obj.letter - intvl_obj.letter_diff
if letter < 0:
letter += 7
if note_obj.octave != 0:
hard_pitch = note_obj.hard_pitch - intvl_obj.diff
new_note = Note.from_values(letter,abs(hard_pitch % 12))
new_note.octave = hard_pitch // 12
else:
pitch = note_obj.pitch - intvl_obj.diff
if intvl_obj._displace > 0:
pitch -= intvl_obj._displace * 12
if pitch < 0:
pitch += 12
new_note = Note.from_values(letter,pitch)
if note_obj.rhythm:
print(note_obj.rhythm)
new_note.rhythm = note_obj.rhythm.flags
return new_note
def enharmonic(note_obj, prefer=None, gross=False):
from pymusician import Note
if prefer:
if prefer not in ("#", "b"):
raise ValueError("'prefer' parameter should be set to '#' or 'b'.")
if not isinstance(gross, bool):
raise ValueError("2nd arg for enharmonic should be Boolean.")
if gross and note_obj.name in GROSS_ROOTS:
new_name = GROSS_ROOTS[note_obj.name]
if "#" in new_name and prefer == 'b':
return note_obj
elif 'b' in new_name and prefer == '#':
return note_obj
else:
new_note = Note(new_name)
elif len(note_obj.name) == 1:
return note_obj
elif len(note_obj.name) == 2:
if "#" in note_obj.name:
if prefer == '#':
return note_obj
new_letter = note_obj.letter + 1
if new_letter > 6:
new_letter -= 7
else:
if prefer == 'b':
return note_obj
new_letter = note_obj.letter - 1
if new_letter < 0:
new_letter += 7
new_note = Note.from_values(new_letter, note_obj.pitch)
else:
new_note = note_obj
new_letter = note_obj.letter
limit = 2 if note_obj.pitch in NON_NATURAL else 1
while len(new_note.name) > limit:
if "#" in note_obj.name:
new_letter += 1
if new_letter > 6:
new_letter -= 7
else:
new_letter -= 1
if new_letter < 0:
new_letter += 7
new_note = Note.from_values(new_letter, note_obj.pitch)
if "#" in new_note.name and prefer == "b":
new_note = Note.from_values(new_letter + 1, note_obj.pitch)
elif "b" in new_note.name and prefer == "#":
new_note = Note.from_values(new_letter - 1, note_obj.pitch)
if note_obj.octave:
new_note.octave = note_obj.octave
if note_obj.rhythm:
new_note.rhythm = note_obj.rhythm.flags
return new_note
def enharmonic(note_obj,prefer=None,gross=False):
from pymusician import Note
if prefer:
if prefer not in ("#","b"):
raise ValueError("'prefer' parameter should be set to '#' or 'b'.")
if not isinstance(gross, bool):
raise ValueError("2nd arg for enharmonic should be Boolean.")
if gross and note_obj.name in GROSS_ROOTS:
new_name = GROSS_ROOTS[note_obj.name]
if "#" in new_name and prefer == 'b':
return note_obj
elif 'b' in new_name and prefer == '#':
return note_obj
else:
new_note = Note(new_name)
elif len(note_obj.name) == 1:
return note_obj
elif len(note_obj.name) == 2:
if "#" in note_obj.name:
if prefer == '#':
return note_obj
new_letter = note_obj.letter + 1
if new_letter > 6:
new_letter -= 7
else:
if prefer == 'b':
return note_obj
new_letter = note_obj.letter - 1
if new_letter < 0:
new_letter += 7
new_note = Note.from_values(new_letter,note_obj.pitch)
else:
new_note = note_obj
new_letter = note_obj.letter
limit = 2 if note_obj.pitch in NON_NATURAL else 1
while len(new_note.name) > limit:
if "#" in note_obj.name:
new_letter += 1
if new_letter > 6:
new_letter -= 7
else:
new_letter -= 1
if new_letter < 0:
new_letter += 7
new_note = Note.from_values(new_letter,note_obj.pitch)
if "#" in new_note.name and prefer == "b":
new_note = Note.from_values(new_letter + 1, note_obj.pitch)
elif "b" in new_note.name and prefer == "#":
new_note = Note.from_values(new_letter - 1, note_obj.pitch)
if note_obj.octave:
new_note.octave = note_obj.octave
if note_obj.rhythm:
new_note.rhythm = note_obj.rhythm.flags
return new_note
def mode_speller(root,mode):
from pymusician import Note
spelling = [root]
if type(MODES[mode]) is str:
parent_name = MODES[mode][:len(MODES[mode])-1]
offset = int(MODES[mode][-1]) - 1
elif type(MODES[mode]) is list:
parent_name = mode
offset = 0
else:
raise ValueError("Invalid Mode pattern. (Check modes json)")
parent = MODES[parent_name]
for item in parent:
if type(item) is not int:
raise ValueError("Invalid Mode pattern. (Check modes json)")
next_pitch = root.pitch
next_letter = root.letter
index = offset
n = 1
flats = False if "b" not in root.name else True
sharps = False if "#" not in root.name else True
if parent_name in MODE_LETTER_SPELLINGS:
for step in parent:
if index == len(parent):
index -= len(parent)
if n == len(parent):
break
next_pitch += parent[index]
if parent_name in MODE_LETTER_SPELLINGS:
next_letter += MODE_LETTER_SPELLINGS[parent_name][index]
else:
next_letter += 1
if next_pitch < 0:
next_pitch += 12
elif next_pitch > 11:
next_pitch -= 12
if next_letter < 0:
next_letter += 7
elif next_letter > 6:
next_letter -= 7
if parent_name in MODE_LETTER_SPELLINGS:
next_note = Note.from_values(next_letter,next_pitch)
else:
next_note = Note.from_values(next_letter,next_pitch)
if len(next_note.name) > 2:
next_note = next_note.enharmonic()
if next_note.name in ("B#","Cb","E#","Fb"):
next_note = next_note.enharmonic()
if "#" in next_note.name:
if flats:
next_note = next_note.enharmonic()
if not flats and not sharps:
sharps = True
if "b" in next_note.name:
if sharps:
next_note = next_note.enharmonic()
if not flats and not sharps:
flats = True
spelling.append(next_note)
index += 1
n += 1
else:
flats = False if "b" not in root.name else True
sharps = False if "#" not in root.name else True
for step in parent:
if index == len(parent):
index -= len(parent)
if n == len(parent):
break
next_pitch += parent[index]
next_letter += 1
if next_pitch < 0:
next_pitch += 12
elif next_pitch > 11:
next_pitch -= 12
if next_letter < 0:
next_letter += 7
elif next_letter > 6:
next_letter -= 7
next_note = Note.from_values(next_letter,next_pitch)
if len(next_note.name) > 2:
next_note = next_note.enharmonic()
if next_note.name in ("B#","Cb","E#","Fb"):
next_note = next_note.enharmonic()
if "#" in next_note.name:
if flats:
next_note = next_note.enharmonic()
if not flats and not sharps:
sharps = True
if "b" in next_note.name:
if sharps:
next_note = next_note.enharmonic()
if not flats and not sharps:
flats = True
index += 1
n += 1
spelling.append(next_note)
return tuple(spelling)
def mode_speller(root, mode):
from pymusician import Note
spelling = [root]
if type(MODES[mode]) is str:
parent_name = MODES[mode][:len(MODES[mode]) - 1]
offset = int(MODES[mode][-1]) - 1
elif type(MODES[mode]) is list:
parent_name = mode
offset = 0
else:
raise ValueError("Invalid Mode pattern. (Check modes json)")
parent = MODES[parent_name]
for item in parent:
if type(item) is not int:
raise ValueError("Invalid Mode pattern. (Check modes json)")
next_pitch = root.pitch
next_letter = root.letter
index = offset
n = 1
flats = False if "b" not in root.name else True
sharps = False if "#" not in root.name else True
if parent_name in MODE_LETTER_SPELLINGS:
for step in parent:
if index == len(parent):
index -= len(parent)
if n == len(parent):
break
next_pitch += parent[index]
if parent_name in MODE_LETTER_SPELLINGS:
next_letter += MODE_LETTER_SPELLINGS[parent_name][index]
else:
next_letter += 1
if next_pitch < 0:
next_pitch += 12
elif next_pitch > 11:
next_pitch -= 12
if next_letter < 0:
next_letter += 7
elif next_letter > 6:
next_letter -= 7
if parent_name in MODE_LETTER_SPELLINGS:
next_note = Note.from_values(next_letter, next_pitch)
else:
next_note = Note.from_values(next_letter, next_pitch)
if len(next_note.name) > 2:
next_note = next_note.enharmonic()
if next_note.name in ("B#", "Cb", "E#", "Fb"):
next_note = next_note.enharmonic()
if "#" in next_note.name:
if flats:
next_note = next_note.enharmonic()
if not flats and not sharps:
sharps = True
if "b" in next_note.name:
if sharps:
next_note = next_note.enharmonic()
if not flats and not sharps:
flats = True
spelling.append(next_note)
index += 1
n += 1
else:
flats = False if "b" not in root.name else True
sharps = False if "#" not in root.name else True
for step in parent:
if index == len(parent):
index -= len(parent)
if n == len(parent):
break
next_pitch += parent[index]
next_letter += 1
if next_pitch < 0:
next_pitch += 12
elif next_pitch > 11:
next_pitch -= 12
if next_letter < 0:
next_letter += 7
elif next_letter > 6:
next_letter -= 7
next_note = Note.from_values(next_letter, next_pitch)
if len(next_note.name) > 2:
next_note = next_note.enharmonic()
if next_note.name in ("B#", "Cb", "E#", "Fb"):
next_note = next_note.enharmonic()
if "#" in next_note.name:
if flats:
next_note = next_note.enharmonic()
if not flats and not sharps:
sharps = True
if "b" in next_note.name:
if sharps:
next_note = next_note.enharmonic()
if not flats and not sharps:
flats = True
index += 1
n += 1
spelling.append(next_note)
return tuple(spelling)