public SongReader Transpose(Chord songChord)
{
if (_songReader.SongChord.IsMajor() != songChord.IsMajor())
{
throw new WrongScaleConversionException(songChord.ToString(), _songReader.SongChord.ToString());
}
var result = new SongReader(songChord);
int difference = (12 - (_songReader.SongChord.GetPositionOnKeyboard() - songChord.GetPositionOnKeyboard()));
var newSongIdentities = new List <SongEntity>();
foreach (var identity in _songReader.SongIdentities)
{
if (identity is Chord)
{
Chord oldChord = identity as Chord;
Chord newChord = MoveChord(_songReader.SongChord, oldChord, difference);
newSongIdentities.Add(newChord);
}
else
{
newSongIdentities.Add(identity);
}
}
result.SongIdentities = newSongIdentities;
return(result);
}
public SongReader Transpose(int semiTones, bool bSharp)
{
Chord newSongChord = MoveChord(_songReader.SongChord, _songReader.SongChord, semiTones);
var newSongIdentities = new List <SongEntity>();
foreach (var identity in _songReader.SongIdentities)
{
if (identity is Chord)
{
Chord oldChord = identity as Chord;
Chord newChord = MoveChord(_songReader.SongChord, oldChord, semiTones);
newSongIdentities.Add(newChord);
}
else
{
newSongIdentities.Add(identity);
}
}
var result = new SongReader(newSongChord);
result.SongIdentities = newSongIdentities;
return(result);
}
public ChordTransposer(SongReader songReader)
{
_songReader = songReader;
}