private List <int> BuildPitchData(UPhoneme phoneme, UVoicePart part, UProject project)
{
int leftBound = phoneme.Parent.position + phoneme.position - project.MillisecondToTick(phoneme.preutter);
int rightBound = phoneme.Parent.position + phoneme.position + phoneme.Duration - project.MillisecondToTick(phoneme.tailIntrude - phoneme.tailOverlap);
var leftNote = phoneme.Parent;
var rightNote = phoneme.Parent;
bool oneMore = true;
while ((leftBound < leftNote.RightBound || oneMore) && leftNote.Prev != null && leftNote.Prev.End == leftNote.position)
{
leftNote = leftNote.Prev;
if (leftBound >= leftNote.RightBound)
{
oneMore = false;
}
}
oneMore = true;
while ((rightBound > rightNote.LeftBound || oneMore) && rightNote.Next != null && rightNote.Next.position == rightNote.End)
{
rightNote = rightNote.Next;
if (rightBound <= rightNote.LeftBound)
{
oneMore = false;
}
}
// Collect pitch curve and vibratos.
var points = new List <PitchPoint>();
var vibratos = new List <Tuple <double, double, UVibrato> >();
var note = leftNote;
float vel = Velocity;
var strechRatio = Math.Pow(2, 1.0 - vel / 100);
float correction = (float)(phoneme.oto.Preutter * (strechRatio - 1));
while (true)
{
var offsetMs = (float)project.TickToMillisecond(note.position - phoneme.Parent.position);
foreach (var point in note.pitch.data)
{
var newpp = point.Clone();
newpp.X += offsetMs + correction;
newpp.Y -= (phoneme.Parent.tone - note.tone) * 10;
points.Add(newpp);
}
if (note.vibrato.length != 0)
{
double vibratoStartMs = project.TickToMillisecond(note.position + note.duration * (1 - note.vibrato.length / 100) - phoneme.Parent.position);
double vibratoEndMs = project.TickToMillisecond(note.End - phoneme.Parent.position);
vibratos.Add(Tuple.Create(vibratoStartMs, vibratoEndMs, note.vibrato));
}
if (note == rightNote)
{
break;
}
note = note.Next;
}
// Expand curve if necessary.
float startMs = (float)(project.TickToMillisecond(phoneme.position) - phoneme.oto.Preutter);
float endMs = (float)(project.TickToMillisecond(phoneme.End) - phoneme.tailIntrude + phoneme.tailOverlap);
if (points.First().X > startMs)
{
points.Insert(0, new PitchPoint(startMs, points.First().Y));
}
if (points.Last().X < endMs)
{
points.Add(new PitchPoint(endMs, points.Last().Y));
}
// Interpolation.
var pitches = new List <int>();
const int intervalTick = 5;
float intervalMs = (float)project.TickToMillisecond(intervalTick);
float currMs = startMs;
int i = 0;
int vibrato = 0;
while (currMs < endMs)
{
while (points[i + 1].X < currMs)
{
i++;
}
var pit = MusicMath.InterpolateShape(points[i].X, points[i + 1].X, points[i].Y, points[i + 1].Y, currMs, points[i].shape) * 10;
while (vibrato < vibratos.Count - 1 && vibratos[vibrato].Item2 < currMs)
{
vibrato++;
}
if (vibrato < vibratos.Count && vibratos[vibrato].Item1 <= currMs && currMs < vibratos[vibrato].Item2)
{
pit += InterpolateVibrato(vibratos[vibrato].Item3, currMs - vibratos[vibrato].Item1, vibratos[vibrato].Item2 - vibratos[vibrato].Item1, project);
}
pitches.Add((int)pit);
currMs += intervalMs;
}
return(pitches);
}