private static void ResizeNotesByRatio(IEnumerable <Note> notes,
double ratio,
TimeSpanType distanceCalculationType,
TempoMap tempoMap,
ITimeSpan startTime)
{
foreach (var note in notes)
{
var noteLength = note.LengthAs(distanceCalculationType, tempoMap);
var noteTime = note.TimeAs(distanceCalculationType, tempoMap);
var scaledShiftFromStart = noteTime.Subtract(startTime, TimeSpanMode.TimeTime).Multiply(ratio);
note.Time = TimeConverter.ConvertFrom(startTime.Add(scaledShiftFromStart, TimeSpanMode.TimeLength), tempoMap);
var scaledLength = noteLength.Multiply(ratio);
note.Length = LengthConverter.ConvertFrom(scaledLength, note.Time, tempoMap);
}
}
private static long ConvertFromTimeLength(MathTimeSpan mathTimeSpan, long time, TempoMap tempoMap)
{
var convertedTimeSpan1 = TimeConverter.ConvertFrom(mathTimeSpan.TimeSpan1, tempoMap);
switch (mathTimeSpan.Operation)
{
case MathOperation.Add:
return(convertedTimeSpan1 + LengthConverter.ConvertFrom(mathTimeSpan.TimeSpan2,
convertedTimeSpan1,
tempoMap));
case MathOperation.Subtract:
return(convertedTimeSpan1 - LengthConverter.ConvertFrom(mathTimeSpan.TimeSpan2,
convertedTimeSpan1,
tempoMap.Flip(convertedTimeSpan1)));
default:
throw new ArgumentException($"{mathTimeSpan.Operation} is not supported by the converter.", nameof(mathTimeSpan));
}
}
/// <summary>
/// Gets points in time of the current grid.
/// </summary>
/// <param name="tempoMap">Tempo map used to get grid's times.</param>
/// <returns>Collection of points in time of the current grid.</returns>
/// <exception cref="ArgumentNullException"><paramref name="tempoMap"/> is null.</exception>
public IEnumerable <long> GetTimes(TempoMap tempoMap)
{
ThrowIfArgument.IsNull(nameof(tempoMap), tempoMap);
if (!Steps.Any())
{
yield break;
}
var time = TimeConverter.ConvertFrom(Start, tempoMap);
yield return(time);
while (true)
{
foreach (var step in Steps)
{
time += LengthConverter.ConvertFrom(step, time, tempoMap);
yield return(time);
}
}
}
