protected MajorOrMinorScale(Step step, MajorAndMinorScaleFlags flags)
: base(GetMode(flags.IsMinor), Pitch.FromStep(step).MidiPitch, flags.IsFlat ? Pitch.MidiPitchTranslationMode.Flats : Pitch.MidiPitchTranslationMode.Sharps)
{
Fifths = CircleOfFifths.CalculateFifths(step, flags);
if (CircleOfFifths.GetAlterOfStepFromNumberOfFifths(step, Fifths) != step.Alter)
{
throw new MalformedScaleException(string.Format("There is no {0} {1} scale beginning on step {2}.",
flags.IsMinor ? "minor" : "major", flags.IsFlat ? "flat" : (Math.Abs(Fifths) > 0 ? "sharp" : "natural"), step));
}
Tonic = step;
}
protected MajorOrMinorScale(int midiPitch, MajorAndMinorScaleFlags flags)
: base(GetMode(flags.IsMinor), midiPitch, flags.IsFlat ? Pitch.MidiPitchTranslationMode.Flats : Pitch.MidiPitchTranslationMode.Sharps)
{
Tonic = Pitch.FromMidiPitch(midiPitch, MidiPitchTranslationMode);
Fifths = CircleOfFifths.CalculateFifths(Tonic, flags);
}
/// <summary>
/// Creates a new instance of Key from given midi pitch.
/// </summary>
/// <param name="midiPitch">Midi pitch</param>
/// <param name="flags">Flags</param>
/// <returns>Key</returns>
public static Key FromMidiPitch(int midiPitch, MajorAndMinorScaleFlags flags)
{
return(new Key(CircleOfFifths.CalculateFifths(midiPitch, flags)));
}
/// <summary>
/// Creates a new instance of Key from given step.
/// </summary>
/// <param name="step"></param>
/// <param name="flags"></param>
/// <returns></returns>
public static Key FromTonic(Step step, MajorAndMinorScaleFlags flags)
{
return(new Key(CircleOfFifths.CalculateFifths(step, flags)));
}
/// <summary>
/// Returns the alteration of specific step.
/// </summary>
/// <param name="step"></param>
/// <returns></returns>
public int StepToAlter(string step)
{
return(CircleOfFifths.GetAlterOfStepFromNumberOfFifths(step, Fifths));
}
