Exemple #1
0
def move_chord(chord: Chord, pitch: Pitch) -> Chord:
    while abs(chord_mean_distance(chord, pitch)) > 12.0:
        dist = chord_mean_distance(chord, pitch)
        if dist < 0:
            chord = chord.transpose(12)
        else:
            chord = chord.transpose(-12)

    return chord
class SpotifyChord():
    def __init__(self,
                 spotify_figure: str = None,
                 figure: str = None,
                 bass: str = None,
                 root: str = None,
                 kind: str = None,
                 chord: Chord = None):
        if spotify_figure == 'NC':
            self.bass = None
            self.root = None
            self.chord = Chord()
            self.structure = 'NC'
        elif chord:
            assert root and figure
            self.bass = Pitch(bass[1:]) if bass else None
            self.root = Pitch(root)
            self.chord = chord
            self.structure = spotify_figure if spotify_figure else figure
        elif figure:
            assert root
            chord_symbol = ChordSymbol(figure=figure)
            self.chord = Chord(chord_symbol.pitches)
            self.bass = Pitch(bass[1:]) if bass else None
            if self.bass:
                self.bass.octave = None
            self.root = Pitch(root)
            self.root.octave = None
            self.structure = figure
        else:
            assert root and kind
            chord_symbol = ChordSymbol(bass=bass, root=root, kind=kind)
            self.chord = Chord(chord_symbol.pitches)
            self.bass = Pitch(bass) if bass else None
            if self.bass:
                self.bass.octave = None
            self.root = Pitch(root)
            self.root.octave = None
            self.structure = chord_symbol.figure

    def __str__(self):
        return self.structure

    def __repr__(self):
        return self.__str__()

    def __hash__(self) -> int:
        return self.structure.__hash__()

    def __eq__(self, o: object) -> bool:
        if type(o) is not SpotifyChord:
            return False
        return self.structure.__eq__(o.structure)

    def has_same_notes(self, a_chord: 'SpotifyChord') -> bool:
        if self.get_num_notes() != a_chord.get_num_notes():
            return False
        for i in range(self.get_num_notes()):
            if self.note_at(i) != a_chord.note_at(i):
                return False
        return True

    def get_num_notes(self) -> int:
        if self.is_no_chord():
            return 0
        return len(self.chord.pitches)

    @classmethod
    def from_bass_root_kind(cls, bass, root, kind):
        return SpotifyChord(bass=bass, root=root, kind=kind)

    @classmethod
    def from_figure(cls, figure: str) -> 'SpotifyChord':
        # if figure of type Xkind/X- : build it from an other enharmonic as bass
        if len(figure.split('/')) > 1 and list(figure)[0] == list(
                figure.split('/')[1])[0]:
            return SpotifyChord.from_figure(
                list(figure)[0] + '/' + Note(list(figure.split(
                    '/')[1])[0]).pitch.getAllCommonEnharmonics()[0].name)
        #if figure == 'Am/A-':
        #    return SpotifyChord(bass='A-', root='A', kind='minor')
        #if figure == 'E7/E-':
        #    return SpotifyChord(bass='E-', root='E', kind='dominant-seventh')
        if figure == 'NC':
            return SpotifyChord(spotify_figure='NC')
        root, structure, bass = split(figure)
        spotify_figure = None
        if structure in [
                '', '+', '7+', '7+ add 9', 'dim', 'add 2', 'add 4', '7 add 11',
                'm add 2', 'm7 add 4', 'm add 4', 'maj7', 'M7', 'M9', 'M11',
                'M13', '/o7', 'o7', 'm', 'm6', 'm7', 'm9', 'm11', 'm13', '6',
                '7', '9', '11', '13', 'sus', 'sus2', 'sus4', 'sus add 7',
                'm add 9', 'm7 add 9', 'm7 add 11', '6 add 9', 'm6 add 9',
                'pedal', 'power'
        ]:
            # explicit_figure = figure
            explicit_figure = root + structure + bass
        elif structure == '9 alter b5':
            explicit_figure = root + bass + '9b5'
        elif structure == '7 alter b5':
            explicit_figure = root + bass + '7b5'
        elif structure == '7 alter #5':
            explicit_figure = root + bass + '7#5'
        elif structure == 'm7 alter b5':
            explicit_figure = root + bass + '/o7'
        elif structure == '7 add 4 subtract 3':
            explicit_figure = root + bass + 'sus add 7'
        elif structure == 'sus add 7 add 9':
            # TODO Check if the 7th should be diminished
            explicit_figure = root + bass + ',45b79'
            spotify_figure = root + bass + '9sus4 '
        elif structure == 'sus add 7 add 13':
            # TODO Check if the 7th should be diminished
            # Pitches are not in the right order
            explicit_figure = root + bass + ',45b713'
            spotify_figure = root + bass + 'sus4 add7 add13'
        elif structure == 'sus add 7 add 9 add 13':
            # TODO Check if the 7th should be diminished
            # Pitches are not in the right order
            explicit_figure = root + bass + ',45b7913'
            spotify_figure = root + bass + 'sus4 add7 add9 add13'
        elif structure == 'sus add 7 add b9':
            # TODO Check if the 7th should be diminished
            explicit_figure = root + bass + ',45b7b9'
            spotify_figure = root + bass + 'b9sus4 '
        elif structure == 'sus add 7 add 9 add 11 add 13':
            explicit_figure = root + bass + ',45791113'
            spotify_figure = root + bass + '13sus4 '
        elif structure == 'pedal':
            explicit_figure = root + bass + 'pedal'
        elif structure == '7 add #11':
            explicit_figure = root + bass + '7 #11'
        elif structure == '7 alter #5 add #9':
            explicit_figure = root + bass + '+7 #9'
        elif structure == '9 alter #5':
            explicit_figure = root + bass + '9 #5'
        elif structure == 'm alter #5':
            explicit_figure = root + bass + 'm #5'
        elif structure == '7 alter b5 add b9':
            explicit_figure = root + bass + '7 b5b9'
        elif structure == 'm7 alter #5':
            explicit_figure = root + bass + 'm7 #5'
        elif structure == '7 alter b5 add #9':
            explicit_figure = root + bass + '7 b5#9'
        elif structure == '7 add b9':
            explicit_figure = root + bass + '7 b9'
        elif structure == '7 add #9':
            explicit_figure = root + bass + '7 #9'
        elif structure == '9 add #11':
            explicit_figure = root + bass + '9 #11'
        elif structure == '7 add b13':
            explicit_figure = root + bass + '7 b13'
        elif structure == '7 add #9 add #11':
            explicit_figure = root + bass + '7 #9#11'
        elif structure == '7 add b9 add b13':
            explicit_figure = root + bass + '7 b9b13'
        elif structure == 'add 9':
            explicit_figure = root + bass + 'add9'
        elif structure == 'maj7 add #11':
            explicit_figure = root + bass + 'maj7 #11'
        elif structure == 'sus add b9 add b9':
            explicit_figure = root + bass + 'sus b9'
        elif structure == 'm7 add b9':
            explicit_figure = root + bass + 'm7 b9'
        elif structure == 'add #11':
            explicit_figure = root + bass + ',#11'
        elif structure == '7 subtract 5 add b9 add #9 add #11 add b13':
            # TODO Pitches are not in the correct order
            explicit_figure = root + bass + ',3b7b9#9#11b13'
            spotify_figure = root + bass + '7 -5 b9 #9 #11 b13'
        elif structure == '13 alter b5':
            explicit_figure = root + bass + '13b5'
        elif structure == 'alter b5':
            explicit_figure = root + bass + ',b5'
        elif structure == 'maj7 alter #5':
            explicit_figure = root + bass + 'maj7 #5'
        elif structure == 'maj7 alter b5':
            explicit_figure = root + bass + 'maj7 b5'
        elif structure == '7 alter #5 add b9':
            explicit_figure = root + bass + '+7 b9'
        elif structure == '7 alter #5 add #9 add #11':
            explicit_figure = root + bass + '+7 #9#11'
        elif structure == '7+ add b9':
            explicit_figure = root + bass + '+7 b9'
        elif structure == '7 add #9 add b13':
            explicit_figure = root + bass + '7 #9b13'
        elif structure == 'M9 add #11':
            explicit_figure = root + bass + 'M9 #11'
        elif structure == 'M9 alter b5':
            explicit_figure = root + bass + 'M9 b5'
        elif structure == '7 add #11 add b9 add #5':
            explicit_figure = root + bass + '+7 b9#11'
        elif structure in ['7+ add #9', '7 add #9 alter #5']:
            explicit_figure = root + bass + '+7 #9'
        elif structure == 'm11 alter b5':
            explicit_figure = root + bass + 'm11 b5'
        elif structure == 'bpedal':
            # TODO This is a hack, replacing the 'b' by a '-'
            explicit_figure = root + bass + '-pedal'
        elif structure in ['13 add #11', '13 alter #11']:
            # TODO Check if a better solution exists
            # 1) This chord should be 13 alter #11
            # 2) The order of the pitches is wrong
            explicit_figure = root + bass + ',35b7913#11'
            spotify_figure = '13 alter #11'
        elif structure in ['13 add b9', '13 alter b9']:
            # TODO Check if a better solution exists
            # 1) This chord should be 13 alter #11
            # 2) The order of the pitches is wrong
            explicit_figure = root + bass + ',35b7b91113'
            spotify_figure = '13 alter b9'
        elif structure in ['13 add b9', '13 alter b9']:
            # TODO Check if a better solution exists
            # 1) This chord should be 13 alter #11
            # 2) The order of the pitches is wrong
            explicit_figure = root + bass + ',35b7b91113'
            spotify_figure = '13 alter b9'
        elif structure == '13 subtract 5 subtract 11':
            # TODO Check if a better solution exists
            # 1) This chord should be 13 alter #11
            # 2) The order of the pitches is wrong
            explicit_figure = root + bass + ',3b7913'
            spotify_figure = '13 sus4 omit 11'
        elif structure == 'm9 alter b5':
            explicit_figure = root + bass + 'm9 b5'
        elif structure == '7 subtract 5':
            explicit_figure = root + bass + '7 omit5'
        elif structure == 'pedal add 5':
            explicit_figure = root + bass + 'omit3'
        else:
            raise ValueError('unknown chord symbol ' + root + bass + structure)
        return SpotifyChord(spotify_figure=spotify_figure,
                            figure=explicit_figure,
                            bass=bass,
                            root=root)

    def note_string(self) -> str:
        if self.is_no_chord():
            return ''
        return str([str(p) for p in self.chord.pitches])

    def is_no_chord(self):
        return self.structure == 'NC'

    def transposed_to(
        self,
        pitch: Pitch = Pitch()) -> Tuple['SpotifyChord', Optional[Interval]]:
        if self.is_no_chord():
            return self, None
        tr_int = interval.notesToInterval(self.root, pitch)
        return self.transposed_by(tr_int), tr_int

    def transposed_by(self, tr_int: Interval) -> 'SpotifyChord':
        if self.is_no_chord():
            return self
        if tr_int.semitones == 0:
            return deepcopy(self)
        new_root = _get_transposed_pitch(self.root, tr_int.directedName)
        new_root.simplifyEnharmonic(inPlace=True)
        new_chord = self.chord.transpose(tr_int, inPlace=False)
        if self.bass:
            new_bass = _get_transposed_pitch(self.bass, tr_int.directedName)
            new_bass.simplifyEnharmonic(inPlace=True)
            new_structure = self.structure.replace('/' + str(self.bass),
                                                   '/' + str(new_bass), 1)
            new_structure = new_structure.replace(str(self.root),
                                                  str(new_root), 1)
            return SpotifyChord(root=str(new_root),
                                bass='/' + str(new_bass) if new_bass else None,
                                chord=new_chord,
                                figure=new_structure)
        else:
            new_structure = self.structure.replace(str(self.root),
                                                   str(new_root), 1)
            return SpotifyChord(root=str(new_root),
                                chord=new_chord,
                                figure=new_structure)

    def note_at(self, i):
        if self.is_no_chord() or i >= self.get_num_notes():
            return None
        return self.chord.pitches[i]