| public GetNoteDuration ( int duration ) : NoteDuration | ||
| duration | int | |
| return | NoteDuration | |
RestSymbol[] GetRests(TimeSignature time, int start, int end)
{
RestSymbol[] result;
RestSymbol r1, r2;
if (end - start < 0)
{
return(null);
}
NoteDuration dur = time.GetNoteDuration(end - start);
switch (dur)
{
case NoteDuration.Whole:
case NoteDuration.Half:
case NoteDuration.Quarter:
case NoteDuration.Eighth:
r1 = new RestSymbol(start, dur);
result = new RestSymbol[] { r1 };
return(result);
case NoteDuration.DottedHalf:
r1 = new RestSymbol(start, NoteDuration.Half);
r2 = new RestSymbol(start + time.Quarter * 2,
NoteDuration.Quarter);
result = new RestSymbol[] { r1, r2 };
return(result);
case NoteDuration.DottedQuarter:
r1 = new RestSymbol(start, NoteDuration.Quarter);
r2 = new RestSymbol(start + time.Quarter,
NoteDuration.Eighth);
result = new RestSymbol[] { r1, r2 };
return(result);
case NoteDuration.DottedEighth:
r1 = new RestSymbol(start, NoteDuration.Eighth);
r2 = new RestSymbol(start + time.Quarter / 2,
NoteDuration.Sixteenth);
result = new RestSymbol[] { r1, r2 };
return(result);
default:
return(null);
}
}
CreateNoteData(List <MidiNote> midinotes, KeySignature key,
TimeSignature time)
{
int len = midinotes.Count;
NoteData[] notedata = new NoteData[len];
for (int i = 0; i < len; i++)
{
MidiNote midi = midinotes[i];
notedata[i] = new NoteData();
notedata[i].number = midi.Number;
notedata[i].leftside = true;
notedata[i].whitenote = key.GetWhiteNote(midi.Number);
notedata[i].duration = time.GetNoteDuration(midi.EndTime - midi.StartTime);
notedata[i].accid = key.GetAccidental(midi.Number, midi.StartTime / time.Measure);
if (i > 0 && (notedata[i].whitenote.Dist(notedata[i - 1].whitenote) == 1))
{
/* This note (notedata[i]) overlaps with the previous note.
* Change the side of this note.
*/
if (notedata[i - 1].leftside)
{
notedata[i].leftside = false;
}
else
{
notedata[i].leftside = true;
}
}
else
{
notedata[i].leftside = true;
}
}
return(notedata);
}
/** Given the raw midi notes (the note number and duration in pulses),
* calculate the following note data:
* - The white key
* - The accidental (if any)
* - The note duration (half, quarter, eighth, etc)
* - The side it should be drawn (left or side)
* By default, notes are drawn on the left side. However, if two notes
* overlap (like A and B) you cannot draw the next note directly above it.
* Instead you must shift one of the notes to the right.
*
* The KeySignature is used to determine the white key and accidental.
* The TimeSignature is used to determine the duration.
*/
private static NoteData[] CreateNoteData(List<MidiNote> midinotes, KeySignature key,
TimeSignature time)
{
int len = midinotes.Count;
NoteData[] notedata = new NoteData[len];
for (int i = 0; i < len; i++) {
MidiNote midi = midinotes[i];
notedata[i] = new NoteData();
notedata[i].number = midi.Number;
notedata[i].leftside = true;
notedata[i].whitenote = key.GetWhiteNote(midi.Number);
notedata[i].duration = time.GetNoteDuration(midi.EndTime - midi.StartTime);
notedata[i].accid = key.GetAccidental(midi.Number, midi.StartTime / time.Measure);
if (i > 0 && (notedata[i].whitenote.Dist(notedata[i-1].whitenote) == 1)) {
/* This note (notedata[i]) overlaps with the previous note.
* Change the side of this note.
*/
if (notedata[i-1].leftside) {
notedata[i].leftside = false;
} else {
notedata[i].leftside = true;
}
} else {
notedata[i].leftside = true;
}
}
return notedata;
}
/** Return the rest symbols needed to fill the time interval between
* start and end. If no rests are needed, return nil.
*/
private RestSymbol[] GetRests(TimeSignature time, int start, int end)
{
RestSymbol[] result;
RestSymbol r1, r2;
if (end - start < 0)
return null;
NoteDuration dur = time.GetNoteDuration(end - start);
switch (dur) {
case NoteDuration.Whole:
case NoteDuration.Half:
case NoteDuration.Quarter:
case NoteDuration.Eighth:
r1 = new RestSymbol(start, dur);
result = new RestSymbol[]{ r1 };
return result;
case NoteDuration.DottedHalf:
r1 = new RestSymbol(start, NoteDuration.Half);
r2 = new RestSymbol(start + time.Quarter*2,
NoteDuration.Quarter);
result = new RestSymbol[]{ r1, r2 };
return result;
case NoteDuration.DottedQuarter:
r1 = new RestSymbol(start, NoteDuration.Quarter);
r2 = new RestSymbol(start + time.Quarter,
NoteDuration.Eighth);
result = new RestSymbol[]{ r1, r2 };
return result;
case NoteDuration.DottedEighth:
r1 = new RestSymbol(start, NoteDuration.Eighth);
r2 = new RestSymbol(start + time.Quarter/2,
NoteDuration.Sixteenth);
result = new RestSymbol[]{ r1, r2 };
return result;
default:
return null;
}
}
