public static IEnumerable <IReadOnlyList <T> > MovingWindows <T>([NotNull] this IEnumerable <T> values, uint windowSize, double overlap)
{
if (windowSize <= 0)
{
throw new ArgumentException("window size must be positive");
}
if (overlap < 0 || overlap >= 1)
{
throw new ArgumentException("overlap must in range of [0, 1)");
}
var overlapSize = Math.Min((uint)(windowSize * overlap), windowSize - 1);
var windowStep = windowSize - overlapSize;
var samples = new CircularFifoBuffer <T>(windowSize);
uint counter = 0;
foreach (var value in values)
{
samples.Add(value);
counter++;
if (samples.Count >= windowSize && counter >= windowStep)
{
counter = 0;
yield return(samples);
}
}
}
