protected bool IsRandomMuted()
{
bool result;
if (!Metronome.GetInstance().IsRandomMute)
{
currentlyMuted = false;
return(false);
}
// init countdown
if (randomMuteCountdown == null && Metronome.GetInstance().RandomMuteSeconds > 0)
{
randomMuteCountdown = randomMuteCountdownTotal = Metronome.GetInstance().RandomMuteSeconds *BytesPerSec - initialOffset;
}
int rand = Metronome.GetRandomNum();
if (randomMuteCountdown == null)
{
result = rand < Metronome.GetInstance().RandomMutePercent;
}
else
{
// countdown
if (randomMuteCountdown > 0)
{
randomMuteCountdown -= previousByteInterval; //previousByteInterval;
}
if (randomMuteCountdown < 0)
{
randomMuteCountdown = 0;
}
float factor = (float)(randomMuteCountdownTotal - randomMuteCountdown) / randomMuteCountdownTotal;
result = rand < Metronome.GetInstance().RandomMutePercent *factor;
}
return(result);
}
/**<summary>Get a random pitch based on existing pitch layers</summary>*/
public string GetAutoPitch()
{
string note;
byte octave;
string[] noteNames =
{
"A", "A#", "B", "C", "C#", "D", "D#", "E", "F", "F#", "G", "G#"
};
ushort[] intervals = { 3, 4, 5, 7, 8, 9 };
do
{
// determine the octave
octave = Metronome.GetRandomNum() > 49 ? (byte)5 : (byte)4;
// 80% chance to make a sonorous interval with last pitch layer
if (Metronome.GetRandomNum() < 80)
{
var last = Metronome.GetInstance().Layers.Last(x => IsPitch);
int index = Array.IndexOf(noteNames, last.BaseSourceName.TakeWhile(x => !char.IsNumber(x)));
index += intervals[Metronome.GetRandomNum() / (100 / 6)];
if (index > 11)
{
index -= 12;
}
note = noteNames[index];
}
else
{
// randomly pick note
note = noteNames[Metronome.GetRandomNum() / (100 / 12)];
}
}while (Metronome.GetInstance().Layers.Where(x => x.IsPitch).Any(x => x.BaseSourceName == note + octave));
return(note + octave);
}
