/// <summary>
/// Beats the snap value.
/// </summary>
/// <param name="time">The time which should be snapped.</param>
/// <param name="snapDivisor">The snap divisor (the bottom number of a fraction).</param>
/// <param name="original">Assuming we want to move *away* from an old timing (ie. jump left 1 notch) set this to the original.</param>
/// <returns></returns>
internal int BeatSnapValue(double time, int snapDivisor, double original)
{
if (AudioEngine.ControlPoints.Count == 0)
{
return((int)time);
}
double offset = AudioEngine.BeatOffsetCloseToZeroAt(original);
double increment = AudioEngine.BeatLengthAt(original, false) / snapDivisor;
int flooredCount;
if (time - offset < 0)
{
flooredCount = (int)((time - offset) / increment) - 1;
}
else
{
flooredCount = (int)((time - offset) / increment);
}
int leftVal = (int)(flooredCount * increment + offset);
int rightVal = (int)((flooredCount + 1) * increment + offset);
if (original != time)
{
if (leftVal == original)
{
return(rightVal);
}
if (rightVal == original)
{
return(leftVal);
}
}
return(time - leftVal < rightVal - time ? leftVal : rightVal);
}
