internal void ReplaceValues(ValueLine <TValue> valueLine)
{
_values.Clear();
_values.AddRange(valueLine._values);
OnValuesChanged();
}
/// <summary>
/// Initializes a new instance of the <see cref="TempoMap"/> with the specified time division
/// of a MIDI file.
/// </summary>
/// <param name="timeDivision">MIDI file time division which specifies the meaning of the time
/// used by events of the file.</param>
/// <exception cref="ArgumentNullException"><paramref name="timeDivision"/> is null.</exception>
internal TempoMap(TimeDivision timeDivision)
{
ThrowIfArgument.IsNull(nameof(timeDivision), timeDivision);
TimeDivision = timeDivision;
Tempo = new ValueLine <Tempo>(Interaction.Tempo.Default);
TimeSignature = new ValueLine <TimeSignature>(Interaction.TimeSignature.Default);
}
internal ValueLine <TValue> Reverse(long centerTime)
{
var maxTime = 2 * centerTime;
var changes = this.TakeWhile(c => c.Time <= maxTime);
var values = new[] { _defaultValue }.Concat(changes.Select(c => c.Value)).Reverse();
var times = new[] { 0L }.Concat(changes.Select(c => maxTime - c.Time).Reverse());
var result = new ValueLine <TValue>(_defaultValue);
result._values.AddRange(values.Zip(times, (v, t) => new ValueChange <TValue>(t, v)));
return(result);
}
