private static MathTimeSpan CheckMathTimeSpan(ITimeSpan timeSpan1, ITimeSpan timeSpan2, MathOperation operation, TimeSpanMode mode)
{
var mathTimeSpan = (operation == MathOperation.Add
? timeSpan1.Add(timeSpan2, mode)
: timeSpan1.Subtract(timeSpan2, mode)) as MathTimeSpan;
Assert.IsTrue(mathTimeSpan != null &&
mathTimeSpan.TimeSpan1.Equals(timeSpan1) &&
mathTimeSpan.TimeSpan2.Equals(timeSpan2) &&
mathTimeSpan.Operation == operation &&
mathTimeSpan.Mode == mode,
"Result is not a math time span.");
return(mathTimeSpan);
}
private static long CalculateBoundaryTime(long time, ITimeSpan size, MathOperation operation, TempoMap tempoMap)
{
ITimeSpan boundaryTime = (MidiTimeSpan)time;
switch (operation)
{
case MathOperation.Add:
boundaryTime = boundaryTime.Add(size, TimeSpanMode.TimeLength);
break;
case MathOperation.Subtract:
var convertedSize = TimeConverter.ConvertFrom(size, tempoMap);
boundaryTime = convertedSize > time
? (MidiTimeSpan)0
: boundaryTime.Subtract(size, TimeSpanMode.TimeLength);
break;
}
return(TimeConverter.ConvertFrom(boundaryTime, tempoMap));
}