public int[] BuildPitch(PitchInfo pitchInfo)
{
var pitches = new List <int>();
var interv = Settings.Current.IntervalTick;
var i = -1;
double xl = 0; // x local
var dir = -99; // up or down
double y = -99; // point value
double xk = -99; // sin width
double yk = -99; // sin height
double C = -99; // normalize to zero
bool IsNextPointTime;
bool IsLastPoint;
int nextX;
int thisX;
for (var x = pitchInfo.Start; x <= pitchInfo.End; x += interv)
{
// only S shape is allowed
nextX = (int)pitchInfo.PitchPoints[i + 1].X;
thisX = x;
IsNextPointTime = thisX < 0 ? thisX + interv >= nextX : thisX + interv >= nextX;
IsLastPoint = i + 2 == pitchInfo.PitchPoints.Length;
while (IsNextPointTime && !IsLastPoint || i < 0)
{
// goto next pitch points pair
i++;
xk = pitchInfo.PitchPoints[i + 1].X - pitchInfo.PitchPoints[i].X;
yk = pitchInfo.PitchPoints[i + 1].Y - pitchInfo.PitchPoints[i].Y;
dir = pitchInfo.PitchPoints[i + 1].Y > pitchInfo.PitchPoints[i].Y ? 1 : -1;
dir = pitchInfo.PitchPoints[i + 1].Y == pitchInfo.PitchPoints[i].Y ? 0 : dir;
C = pitchInfo.PitchPoints[i + 1].Y;
xl = 0;
nextX = (int)(pitchInfo.PitchPoints[i + 1].X / interv - 0.5 * Settings.Current.IntervalMs);
nextX -= (int)(nextX % Settings.Current.IntervalMs);
thisX = (int)Math.Ceiling((double)x / interv);
IsNextPointTime = thisX >= nextX;
IsLastPoint = i + 2 == pitchInfo.PitchPoints.Length;
}
if (dir == -99)
{
throw new Exception();
}
yk = Math.Round(yk, 3);
var X = Math.Abs(xk) < 5 ? 0 : 1 / xk * 10 * xl / Math.PI;
y = -yk * (0.5 * Math.Cos(X) + 0.5) + C;
y *= 10;
pitches.Add((int)Math.Round(y));
xl += interv;
}
//if (i < pitchInfo.PitchPoints.Length - 2)
// throw new Exception("Some points was not processed");
return(pitches.ToArray());
}
public PitchInfo BuildPitchInfo(Note note, Note prevNote, Note nextNote)
{
var pitchInfo = new PitchInfo();
var autoPitchLength = 40;
var autoPitchOffset = -20;
var firstNoteRaise = 10;
var oto = note.SafeOto;
var pps = new List <PitchPoint>();
foreach (var pp in note.PitchBend.Points)
{
pps.Add(pp);
}
if (pps.Count == 0)
{
var offsetY = prevNote == null ? firstNoteRaise : GetPitchDiff(note.NoteNum, prevNote.NoteNum);
pps.Add(new PitchPoint(MusicMath.Current.TickToMillisecond(autoPitchOffset), -offsetY));
pps.Add(new PitchPoint(MusicMath.Current.TickToMillisecond(autoPitchOffset + autoPitchLength), 0));
note.PitchBend.Data = pps;
}
var cutoffFromNext = nextNote != null ? nextNote.StraightPre : 0;
// end and start ms
var startMs = pps.First().X < -oto.Preutter ? pps.First().X : -oto.Preutter;
double endMs = MusicMath.Current.TickToMillisecond(note.FinalLength) - cutoffFromNext;
// if not all the length involved, add end and/or start pitch points
if (pps.First().X > startMs)
{
pps.Insert(0, new PitchPoint(startMs, pps.First().Y));
}
if (pps.Last().X < endMs)
{
pps.Add(new PitchPoint(endMs, pps.Last().Y));
}
var start = (int)MusicMath.Current.SnapMs(pps.First().X);
var end = (int)MusicMath.Current.SnapMs(pps.Last().X);
// combine all
pitchInfo.Start = start;
pitchInfo.End = end;
pitchInfo.PitchPoints = pps.ToArray();
return(pitchInfo);
}