public static Phrase TransposeToScale(Phrase phrase, string fromScale, string toScale)
{
var fromRoot = GetScaleRootNote(fromScale);
var toRoot = GetScaleRootNote(toScale);
var fromType = GetScaleType(fromScale);
var toType = GetScaleType(toScale);
Phrase transposedPhrase;
if (fromType == toType)
{
transposedPhrase = phrase.Clone();
}
else
{
var intermediateScale = NoteHelper.NumberToNoteOnly(fromRoot) + " " + toType;
transposedPhrase = MashNotesToScale(phrase, intermediateScale);
}
var distance = NoteHelper.GetDistanceBetweenNotes(fromRoot, toRoot);
if (distance == 0)
{
return(transposedPhrase);
}
var direction = distance < 0 ? Direction.Down : Direction.Up;
transposedPhrase = NoteHelper.ShiftNotes(transposedPhrase, Math.Abs(distance), Interval.Step, direction);
transposedPhrase = MashNotesToScale(transposedPhrase, toScale);
return(transposedPhrase);
}
public static List <ScaleMatch> FindMatchingScales(List <int> notes)
{
var noteNumbers = notes
.Select(NoteHelper.NumberToNoteOnly)
.Select(NoteHelper.NoteToNumber)
.Distinct()
.OrderBy(x => x)
.ToList();
var matches = new List <ScaleMatch>();
foreach (var scale in GetScales())
{
var match = MatchNotesToScale(noteNumbers, scale);
matches.Add(match);
}
return(matches.OrderBy(x => x.DistanceFromScale)
.ThenBy(x => Math.Abs(NoteHelper.GetDistanceBetweenNotes(notes[0], x.Scale.Notes[0])))
.ToList());
}
private static int DistanceFromScale(int note, Scale scale)
{
return(scale.Notes.Select(x => Math.Abs(NoteHelper.GetDistanceBetweenNotes(note, x))).Min());
}
