PerKeyArray <HashSet <int> > MoveNotes(double xOffset, int keyOffset, PerKeyArray <HashSet <int> > selectedNotes)
{
var pattern = PianoRollPattern.Pattern;
var notesToMove = pattern.FetchSelectedNotes(selectedNotes);
pattern.RemoveSelectedNotes(notesToMove);
var shiftedNotes = notesToMove.Roll(keyOffset).MapParallel(k =>
{
foreach (var n in k)
{
n.Start += xOffset;
}
return(k.AsEnumerable());
});
pattern.InjectNotes(shiftedNotes);
var editedSelection = shiftedNotes.ToSelectedSNotes();
PianoRollPattern.DeselectAllNotes();
PianoRollPattern.SelectNoteRange(editedSelection);
return(pattern.GetNoteLocations(shiftedNotes));
}
public MIDIPatternInteractionMouseDown(MIDIPatternConnect pianoRollPattern) : base(pianoRollPattern)
{
if (ImGui.GetIO().KeyShift)
{
ContinueWith(new MIDIPatternInteractionMouseShiftDown(PianoRollPattern));
return;
}
ClickLocation = GetMousePos();
ClickedNote = PianoRollPattern.GetNoteAtLocation(ClickLocation);
if (ClickedNote == null || !PianoRollPattern.IsNoteSelected(ClickedNote.Value))
{
PianoRollPattern.DeselectAllNotes();
}
if (ClickedNote != null)
{
PianoRollPattern.SelectNote(ClickedNote.Value);
}
}