/// <summary>
/// Returns an <see cref="IntervalDefinition"/> by the specified half steps number and
/// interval's direction.
/// </summary>
/// <param name="interval">The interval as a number of half steps away.</param>
/// <param name="direction">The direction of an interval (up or down).</param>
/// <returns>An <see cref="IntervalDefinition"/> with the specified interval and direction.</returns>
/// <exception cref="InvalidEnumArgumentException"><paramref name="direction"/> specified an
/// invalid value.</exception>
public static IntervalDefinition Get(SevenBitNumber interval, IntervalDirection direction)
{
ThrowIfArgument.IsInvalidEnumValue(nameof(direction), direction);
if (!_cache.TryGetValue(interval, out Dictionary <IntervalDirection, IntervalDefinition> intervalDefinitions))
{
_cache.Add(interval, intervalDefinitions = new Dictionary <IntervalDirection, IntervalDefinition>());
}
if (!intervalDefinitions.TryGetValue(direction, out IntervalDefinition intervalDefinition))
{
intervalDefinitions.Add(direction, intervalDefinition = new IntervalDefinition(interval, direction));
}
return(intervalDefinition);
}
/// <summary>
/// Adds a note by the specified interval relative to the current root note using
/// default length and specified velocity.
/// </summary>
/// <param name="intervalDefinition">The <see cref="IntervalDefinition"/> which defines
/// a number of half steps from the current root note.</param>
/// <param name="velocity">The velocity of a note.</param>
/// <returns>The current <see cref="PatternBuilder"/>.</returns>
/// <remarks>
/// To set root note use <see cref="SetRootNote(NoteDefinition)"/> method. By default the root note is C4.
/// To set default note length use <see cref="SetNoteLength(ILength)"/> method. By default the length
/// is 1/4.
/// </remarks>
/// <exception cref="ArgumentNullException"><paramref name="intervalDefinition"/> is null.</exception>
/// <exception cref="ArgumentOutOfRangeException">The number of result note is out of valid range.</exception>
public PatternBuilder Note(IntervalDefinition intervalDefinition, SevenBitNumber velocity)
{
return(Note(intervalDefinition, _noteLength, velocity));
}
/// <summary>
/// Adds a note by the specified interval relative to the current root note using
/// specified length and default velocity.
/// </summary>
/// <param name="intervalDefinition">The <see cref="IntervalDefinition"/> which defines
/// a number of half steps from the current root note.</param>
/// <param name="length">The length of a note.</param>
/// <returns>The current <see cref="PatternBuilder"/>.</returns>
/// <remarks>
/// To set root note use <see cref="SetRootNote(NoteDefinition)"/> method. By default the root note is C4.
/// To set default velocity use <see cref="SetVelocity(SevenBitNumber)"/> method. By default the
/// velocity is 100.
/// </remarks>
/// <exception cref="ArgumentNullException"><paramref name="intervalDefinition"/> is null. -or-
/// <paramref name="length"/> is null.</exception>
/// <exception cref="ArgumentOutOfRangeException">The number of result note is out of valid range.</exception>
public PatternBuilder Note(IntervalDefinition intervalDefinition, ILength length)
{
return(Note(intervalDefinition, length, _velocity));
}
/// <summary>
/// Adds a note by the specified interval relative to the current root note using
/// specified length and velocity.
/// </summary>
/// <param name="intervalDefinition">The <see cref="IntervalDefinition"/> which defines
/// a number of half steps from the current root note.</param>
/// <param name="length">The length of a note.</param>
/// <param name="velocity">The velocity of a note.</param>
/// <returns>The current <see cref="PatternBuilder"/>.</returns>
/// <remarks>
/// To set root note use <see cref="SetRootNote(NoteDefinition)"/> method. By default the root note is C4.
/// </remarks>
/// <exception cref="ArgumentNullException"><paramref name="intervalDefinition"/> is null. -or-
/// <paramref name="length"/> is null.</exception>
/// <exception cref="ArgumentOutOfRangeException">The number of result note is out of valid range.</exception>
public PatternBuilder Note(IntervalDefinition intervalDefinition, ILength length, SevenBitNumber velocity)
{
ThrowIfArgument.IsNull(nameof(intervalDefinition), intervalDefinition);
return(Note(_rootNote.Transpose(intervalDefinition), length, velocity));
}
/// <summary>
/// Returns the current <see cref="NoteDefinition"/> transposed by the specified
/// <see cref="IntervalDefinition"/>.
/// </summary>
/// <param name="intervalDefinition">The <see cref="IntervalDefinition"/> to transpose the current
/// <see cref="NoteDefinition"/> by.</param>
/// <returns>The current <see cref="NoteDefinition"/> transposed by the <paramref name="intervalDefinition"/>.</returns>
/// <exception cref="ArgumentOutOfRangeException">Result note definition's note number is out of valid range.</exception>
public NoteDefinition Transpose(IntervalDefinition intervalDefinition)
{
return(Get((SevenBitNumber)(NoteNumber + intervalDefinition.HalfSteps)));
}
/// <summary>
/// Transposes the specified <see cref="NoteDefinition"/>.
/// </summary>
/// <param name="noteDefinition">The <see cref="NoteDefinition"/> to transpose.</param>
/// <param name="halfSteps">The number of half steps to transpose the <paramref name="noteDefinition"/> by.</param>
/// <returns>The <see cref="NoteDefinition"/> which is the <paramref name="noteDefinition"/>
/// transposed by the <paramref name="halfSteps"/>.</returns>
/// <exception cref="ArgumentNullException"><paramref name="noteDefinition"/> is null.</exception>
/// <exception cref="ArgumentOutOfRangeException">Result note definition's note number is out of valid range.</exception>
public static NoteDefinition operator +(NoteDefinition noteDefinition, int halfSteps)
{
ThrowIfArgument.IsNull(nameof(noteDefinition), noteDefinition);
return(noteDefinition.Transpose(IntervalDefinition.FromHalfSteps(halfSteps)));
}