public Scale(string m, int f)
{
scaleNotes = new List <string>();
mode = m;
fifth = f;
//通过五度关系定出主音位置
//纯五度有7个半音
var numOfSemitone = 7;
//通过音程关系定出所有音
baseNoteName = "C4";
baseNoteName = NoteHelper.GetNote(baseNoteName, numOfSemitone * fifth);
//如果超出了C0-B8范围
if (baseNoteName.Last() == '8')
{
baseNoteName = baseNoteName.Replace('8', '4');
}
//小调的话把根音调成大调下方小三度
if (mode == "minor")
{
baseNoteName = new Note(NoteHelper.GetNote(baseNoteName, -3)).pitch;
}
scaleNotes.Add(baseNoteName.Substring(0, baseNoteName.Length - 1));
AddKeys(baseNoteName, mode);
var baseNote = new Note(scaleNotes[0] + "4");
var secondNote = new Note(scaleNotes[1] + "4");
var thirdNote = new Note(scaleNotes[2] + "4");
var fourthNote = new Note(scaleNotes[3] + "4");
var fifthNote = new Note(scaleNotes[4] + "4");
var sixthNote = new Note(scaleNotes[5] + "4");
//建立和弦
if (mode == "major")
{
main = ChordHelper.BuildThree(baseNote, ChordThreeCategory.major);
second = ChordHelper.BuildThree(secondNote, ChordThreeCategory.minor);
third = ChordHelper.BuildThree(thirdNote, ChordThreeCategory.minor);
subDominant = ChordHelper.BuildThree(fourthNote, ChordThreeCategory.major);
dominant = ChordHelper.BuildThree(fifthNote, ChordThreeCategory.major);
sixth = ChordHelper.BuildThree(sixthNote, ChordThreeCategory.minor);
}
else
{
main = ChordHelper.BuildThree(baseNote, ChordThreeCategory.minor);
second = ChordHelper.BuildThree(secondNote, ChordThreeCategory.diminished);
third = ChordHelper.BuildThree(thirdNote, ChordThreeCategory.major);
subDominant = ChordHelper.BuildThree(fourthNote, ChordThreeCategory.minor);
dominant = ChordHelper.BuildThree(fifthNote, ChordThreeCategory.major);
sixth = ChordHelper.BuildThree(sixthNote, ChordThreeCategory.major);
}
}
//找到调所有的音
private void AddKeys(string baseNoteName, string mode)
{
if (mode == "major" || mode == string.Empty || mode == "none")
{
//大调：全全半全全全半
var nextNoteName = baseNoteName;
nextNoteName = NoteHelper.GetNote(nextNoteName, 2);
scaleNotes.Add(nextNoteName.Substring(0, nextNoteName.Length - 1));
nextNoteName = NoteHelper.GetNote(nextNoteName, 2);
scaleNotes.Add(nextNoteName.Substring(0, nextNoteName.Length - 1));
nextNoteName = NoteHelper.GetNote(nextNoteName, 1);
scaleNotes.Add(nextNoteName.Substring(0, nextNoteName.Length - 1));
nextNoteName = NoteHelper.GetNote(nextNoteName, 2);
scaleNotes.Add(nextNoteName.Substring(0, nextNoteName.Length - 1));
nextNoteName = NoteHelper.GetNote(nextNoteName, 2);
scaleNotes.Add(nextNoteName.Substring(0, nextNoteName.Length - 1));
nextNoteName = NoteHelper.GetNote(nextNoteName, 2);
scaleNotes.Add(nextNoteName.Substring(0, nextNoteName.Length - 1));
//关系小调
var extraNote = NoteHelper.GetNote(nextNoteName, -3);
scaleNotes.Add(extraNote.Substring(0, extraNote.Length - 1));
}
else if (mode == "minor")
{
//小调：全半全全半3半
var nextNoteName = baseNoteName;
nextNoteName = NoteHelper.GetNote(nextNoteName, 2);
scaleNotes.Add(nextNoteName.Substring(0, nextNoteName.Length - 1));
nextNoteName = NoteHelper.GetNote(nextNoteName, 1);
scaleNotes.Add(nextNoteName.Substring(0, nextNoteName.Length - 1));
nextNoteName = NoteHelper.GetNote(nextNoteName, 2);
scaleNotes.Add(nextNoteName.Substring(0, nextNoteName.Length - 1));
nextNoteName = NoteHelper.GetNote(nextNoteName, 2);
scaleNotes.Add(nextNoteName.Substring(0, nextNoteName.Length - 1));
nextNoteName = NoteHelper.GetNote(nextNoteName, 1);
scaleNotes.Add(nextNoteName.Substring(0, nextNoteName.Length - 1));
nextNoteName = NoteHelper.GetNote(nextNoteName, 3);
scaleNotes.Add(nextNoteName.Substring(0, nextNoteName.Length - 1));
//关系大调
var extraNote = NoteHelper.GetNote(nextNoteName, -1);
scaleNotes.Add(extraNote.Substring(0, extraNote.Length - 1));
}
}
