private Accidental GetAccidental(int index, int noteValue)
{
var pitchValue = (Mode.ModeIntervals[index].Semitones + Root.SemitonesAboveC).RollingRange(11);
var accidentalValue = (pitchValue - noteValue);
switch (accidentalValue)
{
case -11:
accidentalValue = 1;
break;
case -10:
accidentalValue = 2;
break;
case 11:
accidentalValue = -1;
break;
case 10:
accidentalValue = -2;
break;
}
return(Accidentals.Single(a => a.SemitonesAwayFromNatural == accidentalValue));
}
public static KeySignature Parse(string input)
{
var inputArr = input.Split(' ');
var tonicAndAccidentalArr = inputArr[0].ToCharArray();
if (inputArr.Length == 2 &&
(tonicAndAccidentalArr.Length == 2 ||
tonicAndAccidentalArr.Length == 1))
{
var tonic = char.ToUpper(tonicAndAccidentalArr[0]);
var accidental = tonicAndAccidentalArr.Length == 2 ? tonicAndAccidentalArr[1].ToString() : "";
var mode = inputArr[1].ToLower().FirstCharToUpper();
if (Scale.Contains(tonic) && Accidentals.Contains(accidental) &&
Modes.Contains(mode))
{
return(new KeySignature(tonic, accidental, mode));
}
else
{
Console.WriteLine($"One or more parts of '{input}' are not valid. Ensure your key signature has no double sharps or double flats.");
}
}
else
{
Console.WriteLine($"'{input}' is not a valid key signature. Must contain a tonic and mode separated by a space. (e.g., Bb Major)");
}
return(null);
}
public Note(NoteType type, PitchName pitch, int octave, bool isDotted, Accidentals accidental, bool isOverlaid)
{
Pitch = pitch;
Accidental = accidental;
Octave = octave;
Type = type;
IsDotted = isDotted;
IsOverlaid = isOverlaid;
}
public static bool TryReadAccidental(Scanner scanner, ILogger logger,
out LiteralNode <Accidental> accidentalNode)
{
var accidentalText = scanner.ReadAnyPatternOf(@"\#\#", "bb", "♯♯", "♭♭", @"\#", "♯", "b", "♭", "\u1d12a", "\u1d12b");
Accidental accidental;
if (!Accidentals.TryParse(accidentalText, out accidental))
{
accidentalNode = null;
return(false);
}
accidentalNode = new LiteralNode <Accidental>(accidental, scanner.LastReadRange);
return(true);
}
public Pitch GetPitchByIntervalBelow(Interval interval)
{
var noteIndex = (Note.Index() - (interval.NoteIndex - 1)).RollingRange(6);
var note = Utilities.GetNoteByIndex(noteIndex);
var semitones = SemitonesAboveC - interval.Semitones - note.SemitonesAboveC;
if (semitones < -2)
{
semitones += 12;
}
else if (semitones > 2)
{
semitones -= 12;
}
var accidental = Accidentals.Single(a => a.SemitonesAwayFromNatural == semitones);
return(new Pitch(note, accidental));
}
public Pitch(Step step = null, Octaves octaves = Octaves.First, Accidentals accidental = Accidentals.Natural)
{
this.Step = step ?? new Step();
this.Octaves = octaves;
this.Accidental = accidental;
}
public Alter(Accidentals alterValue):this()
{
Value = alterValue;
}
