public static DiatonicTone Key(
this KeySignature signature,
SemiTone tone,
out PitchTransform transform
) =>
new DiatonicTone(
signature.KeyOfPitchClass(tone.PitchClass, out transform),
tone.Octave
);
public Note(
NoteID id,
Duration duration,
SemiTone tone
)
{
this.id = id;
this.duration = duration;
this.tone = tone;
}
public NoteID AddNote(SemiTone tone, Duration duration)
{
var noteID = new NoteID(next_noteID++);
next_noteID_obj.WriteAllString(next_noteID.ToString());
var newnote_obj = notes_obj.Graph[notes_obj.Graph.Create()];
newnote_obj.WriteAllString($"{CodeTools.WriteDuration(duration)}\n{tone.Semitones}");
notes_obj.Add(noteID.ToString(), newnote_obj.ID);
return(noteID);
}
public SemiTone Left(SemiTone wholetone)
{
PitchTransform transform;
var diatone =
this.Key(wholetone, out transform);
//if (transform.Steps != 0)
// return this[diatone.KeyClass] * new SemiTone(diatone.KeyClass.GetPitchClass(), wholetone.Octave);
var wholestep =
-wholesteps[((int)diatone.KeyClass - 1 + 7) % 7];
return
(wholestep * SemiToneOfKey(diatone, transform));
}
SemiTone Effect_ToneChanged_affect(SemiTone tone, Time time, int delta, CaretMode mode, MusicTrack track)
{
if (mode.HasFlag(CaretMode.Absolute))
{
return(new SemiTone(delta));
}
else if (!mode.HasFlag(CaretMode.Delta))
{
throw new InvalidOperationException();
}
if (mode.HasFlag(CaretMode.SemiTones))
{
tone += delta;
}
else if (mode.HasFlag(CaretMode.WholeTones))
{
var keysig =
track
.Adornment
.KeySignatures
.Intersecting(time)
.First()
.Value;
if (delta > 0)
{
while (delta-- > 0)
{
tone = keysig.Right(tone);
}
}
else if (delta < 0)
{
while (delta++ < 0)
{
tone = keysig.Left(tone);
}
}
}
else
{
throw new InvalidOperationException();
}
return(tone);
}
public MelodyTrack(
StorageObjectID storageobjectID,
EditorFile file
) :
base(
storageobjectID,
file,
null //TODO
)
{
obj = this.Object();
notes_field.GeneralDuration.AfterChange += GeneralDuration_AfterChange;
next_noteID_obj = obj.GetOrMake("next_noteID");
listener_nextnodeID_contentsset =
next_noteID_obj.CreateListen(IOEvent.ObjectContentsSet, () => {
if (!int.TryParse(next_noteID_obj.ReadAllString(), out next_noteID))
{
next_noteID_obj.WriteAllString("0");
}
});
notes_obj = obj.GetOrMake("notes");
listener_notes_added =
notes_obj.CreateListen(IOEvent.ChildAdded, (key, new_note_objID) => {
var noteID = new NoteID(int.Parse(key));
var new_note_obj = notes_obj.Graph[new_note_objID];
var contents = new_note_obj.ReadAllString().Split('\n');
var duration = CodeTools.ReadDuration(contents[0]);
var tone = new SemiTone(int.Parse(contents[1]));
var note =
new Note(
noteID,
duration,
tone
);
notes_field.Add(noteID, duration);
notes_lookup.Add(noteID, note);
FieldChanged?.Invoke(duration);
});
listener_notes_changed =
notes_obj.CreateListen(IOEvent.ChildContentsSet, (key, changed_note_objID) => {
var noteID = new NoteID(int.Parse(key));
var new_note_obj = notes_obj.Graph[changed_note_objID];
var contents = new_note_obj.ReadAllString().Split('\n');
var duration = CodeTools.ReadDuration(contents[0]);
var tone = new SemiTone(int.Parse(contents[1]));
Note oldnote;
if (notes_lookup.TryGetValue(noteID, out oldnote))
{
if (oldnote.Duration != duration ||
oldnote.Tone != tone)
{
var newnote =
new Note(
noteID,
duration,
tone
);
var oldnoteduration =
oldnote.Duration;
notes_lookup[noteID] = newnote;
notes_field.Move(noteID, oldnoteduration, duration);
FieldChanged?.Invoke(oldnoteduration.Union(duration));
}
}
});
listener_notes_removed =
notes_obj.CreateListen(IOEvent.ChildRemoved, (key, old_note_objID) => {
var noteID = new NoteID(int.Parse(key));
var oldnote = notes_lookup[noteID];
notes_field.Remove(noteID, oldnote.Duration);
notes_lookup.Remove(noteID);
FieldChanged?.Invoke(oldnote.Duration);
});
}
public void UpdateNote(NoteID noteID, Duration newduration, SemiTone newtone)
{
var note_obj = notes_obj.Get(noteID.ToString());
note_obj.WriteAllString($"{CodeTools.WriteDuration(newduration)}\n{newtone}");
}
public SemiTone Transform(SemiTone natural) => natural + steps;