public void GetRelativePitchDistanceTest()
{
// The distance must be computed on relative notes, i.e., the pitch must be taken modulo 12.
Assert.AreEqual(0, MidiUtils.GetRelativePitchDistance(24, 48));
// Shortest distance via 7 to 8 = 2
Assert.AreEqual(2, MidiUtils.GetRelativePitchDistance(6, 8));
// Shortest distance via 1, 0, 11, 10 = 4
Assert.AreEqual(4, MidiUtils.GetRelativePitchDistance(2, 10));
// No distance
Assert.AreEqual(0, MidiUtils.GetRelativePitchDistanceSigned(5, 5));
// Shortest signed distance from F to A -> 4
Assert.AreEqual(4, MidiUtils.GetRelativePitchDistanceSigned(53, 69));
// Shortest signed distance via 11, 0, 1, 2 -> 4
Assert.AreEqual(4, MidiUtils.GetRelativePitchDistanceSigned(10, 2));
// Shortest signed distance via 1, 0, 11, 10 -> -4
Assert.AreEqual(-4, MidiUtils.GetRelativePitchDistanceSigned(2, 10));
// Shortest signed distance via 5, 6, 7, 8 -> 4
Assert.AreEqual(4, MidiUtils.GetRelativePitchDistanceSigned(4, 8));
// Shortest signed distance via 7, 6, 5, 4 -> -4
Assert.AreEqual(-4, MidiUtils.GetRelativePitchDistanceSigned(8, 4));
// Shortest signed distance via 0 -> 1
Assert.AreEqual(1, MidiUtils.GetRelativePitchDistanceSigned(11, 0));
// Shortest signed distance via 11 -> -1
Assert.AreEqual(-1, MidiUtils.GetRelativePitchDistanceSigned(0, 11));
// Shortest signed distance from F to B -> 6 or -6
Assert.IsTrue(MidiUtils.GetRelativePitchDistanceSigned(77, 59)
is - 6
or 6);
// Shortest signed distance from A to D -> 5
Assert.AreEqual(5, MidiUtils.GetRelativePitchDistanceSigned(45, 74));
// Shortest signed distance from D to A -> -5
Assert.AreEqual(-5, MidiUtils.GetRelativePitchDistanceSigned(74, 45));
}
private void HandlePitchEvent(PitchEvent pitchEvent, double currentBeat)
{
if (pitchEvent == null || pitchEvent.MidiNote <= 0)
{
if (lastRecordedNote != null)
{
HandleRecordedNoteEnded(currentBeat);
}
}
else
{
if (lastRecordedNote != null)
{
if (MidiUtils.GetRelativePitchDistance(lastRecordedNote.RoundedMidiNote, pitchEvent.MidiNote) <= roundingDistance)
{
// Continue singing on same pitch
HandleRecordedNoteContinued(currentBeat);
}
else
{
// Continue singing on different pitch. Finish the last recorded note.
HandleRecordedNoteEnded(currentBeat);
}
}
// The lastRecordedNote could be ended above, so the following null check is not redundant.
if (lastRecordedNote == null && currentBeat >= nextNoteStartBeat)
{
// Start singing of a new note
HandleRecordedNoteStarted(pitchEvent.MidiNote, currentBeat);
}
}
}
private int GetRoundedMidiNote(int recordedMidiNote, int targetMidiNote, int roundingDistance)
{
int distance = MidiUtils.GetRelativePitchDistance(recordedMidiNote, targetMidiNote);
if (distance <= roundingDistance)
{
return(targetMidiNote);
}
else
{
return(recordedMidiNote);
}
}
public void GetRelativePitchDistanceTest()
{
// The distance must be computed on relative notes, i.e., the pitch must be taken modulo 12.
int distanceSamePitchDifferentOctaves = MidiUtils.GetRelativePitchDistance(24, 48);
Assert.AreEqual(0, distanceSamePitchDifferentOctaves);
// Shortest distance via 7 to 8 = 2
int distance1 = MidiUtils.GetRelativePitchDistance(6, 8);
Assert.AreEqual(2, distance1);
// Shortest distance via 1, 0, 11, 10 = 4
int distance2 = MidiUtils.GetRelativePitchDistance(2, 10);
Assert.AreEqual(4, distance2);
}
private void HandlePitchEvent(PitchEvent pitchEvent, double currentBeat, bool updateUi)
{
// Stop recording
if (pitchEvent == null || pitchEvent.MidiNote <= 0)
{
if (lastRecordedNote != null)
{
HandleRecordedNoteEnded(currentBeat);
}
return;
}
// Start new recorded note
if (lastRecordedNote == null)
{
HandleRecordedNoteStarted(pitchEvent.MidiNote, currentBeat, updateUi);
return;
}
// Continue or finish existing recorded note. Possibly starting new note to change pitch.
bool isTargetNoteHitNow = MidiUtils.GetRelativePitchDistance(lastRecordedNote.TargetNote.MidiNote, pitchEvent.MidiNote) <= roundingDistance;
if (isTargetNoteHitNow && !IsTargetNoteHit(lastRecordedNote))
{
// Jump from a wrong pitch to correct pitch.
// Otherwise, the rounding could tend towards the wrong pitch
// when the player starts a note with the wrong pitch.
HandleRecordedNoteEnded(currentBeat);
HandleRecordedNoteStarted(pitchEvent.MidiNote, currentBeat, updateUi);
}
else if (MidiUtils.GetRelativePitchDistance(lastRecordedNote.RoundedMidiNote, pitchEvent.MidiNote) <= roundingDistance)
{
// Earned a joker for continued correct singing.
if (IsTargetNoteHit(lastRecordedNote) && availableJokerCount < MaxJokerCount)
{
availableJokerCount++;
}
// Continue singing on same pitch
HandleRecordedNoteContinued(pitchEvent.MidiNote, currentBeat, updateUi);
}
else
{
// Changed pitch while singing.
if (!isTargetNoteHitNow &&
IsTargetNoteHit(lastRecordedNote) &&
availableJokerCount > 0)
{
// Because of the joker, this beat is still counted as correct although it is not. The joker is gone.
availableJokerCount--;
usedJokerCount++;
HandleRecordedNoteContinued(lastRecordedNote.RecordedMidiNote, currentBeat, updateUi);
}
else
{
// Continue singing on different pitch.
HandleRecordedNoteEnded(currentBeat);
HandleRecordedNoteStarted(pitchEvent.MidiNote, currentBeat, updateUi);
}
}
}