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 whether any of the notes in notedata (between start and
* end indexes) overlap. This is needed by the Stem class to
* determine the position of the stem (left or right of notes).
*/
private static bool NotesOverlap(NoteData[] notedata, int start, int end)
{
for (int i = start; i < end; i++) {
if (!notedata[i].leftside) {
return true;
}
}
return false;
}
/** Given the note data (the white keys and accidentals), create
* the Accidental Symbols and return them.
*/
private static AccidSymbol[] CreateAccidSymbols(NoteData[] notedata, Clef clef)
{
int count = 0;
foreach (NoteData n in notedata) {
if (n.accid != Accid.None) {
count++;
}
}
AccidSymbol[] symbols = new AccidSymbol[count];
int i = 0;
foreach (NoteData n in notedata) {
if (n.accid != Accid.None) {
symbols[i] = new AccidSymbol(n.accid, n.whitenote, clef);
i++;
}
}
return symbols;
}
