void RemoveNote(ref SeqCommand command)
{
var pos = command.IntValue1;
if (pos >= 0)
{
_notePosition.RemoveAt(pos);
_notes.RemoveAt(pos);
}
}
public void AddNote(int bar, float sub, float length, float frequency, float velocity)
{
_sequencer.AddCommand(
SeqCommand.InsertNote(
position: RatioToSampleTime(bar, sub),
length: RatioToSampleTime(0, length),
frequency: frequency,
velocity: velocity
)
);
}
void ScaleNotes(ref SeqCommand command)
{
var newLength = command.IntValue1;
var factor = ((double)newLength) / TotalLength;
for (int i = 0; i < _notePosition.Count; i++)
{
_notePosition[i] = (int)Math.Round(factor * _notePosition[i]);
var note = _notes[i];
note.Length = (int)Math.Round(factor * note.Length);
_notes[i] = note;
}
}
void ApplyCommand(ref SeqCommand command)
{
switch (command.Type)
{
case SeqCommand.CommandType.SetLength:
TotalLength = command.IntValue1;
break;
case SeqCommand.CommandType.Start:
IsRunning = true;
break;
case SeqCommand.CommandType.Stop:
IsRunning = false;
break;
case SeqCommand.CommandType.SetLoop:
IsLooping = true;
break;
case SeqCommand.CommandType.UnsetLoop:
IsLooping = false;
break;
case SeqCommand.CommandType.InsertNote:
InsertNote(ref command);
break;
case SeqCommand.CommandType.RemoveNote:
RemoveNote(ref command);
break;
case SeqCommand.CommandType.ScaleNotes:
ScaleNotes(ref command);
break;
default:
break;
}
}
void InsertNote(ref SeqCommand command)
{
var note = new SeqNote
{
Length = command.IntValue2,
Frequency = command.FloatValue1,
Velocity = command.FloatValue2,
};
var pos = _notePosition.BinarySearch(command.IntValue1);
if (pos < 0)
{
_notePosition.Insert(~pos, command.IntValue1);
_notes.Insert(~pos, note);
}
else
{
_notePosition[pos] = command.IntValue1;
_notes[pos] = note;
}
}
public void SetLength(int bars)
{
_sequencer.AddCommand(
SeqCommand.SetLength((int)Math.Ceiling(BarsToSeconds(bars) * SampleRate))
);
}
void EnableLoop()
{
_sequencer.AddCommand(SeqCommand.SetLoop());
}
public void AddCommand(SeqCommand command)
{
_commands.Enqueue((command));
}
