public void GetCorrectScaleDegree(int pitch, ScaleDegree expectedScaleDegree)
{
var scaleDegreeEvaluator = new ScaleDegreeEvaluator();
var scaleDegree = scaleDegreeEvaluator.GetScaleDegreeFromNote(pitch);
Assert.AreEqual(expectedScaleDegree, scaleDegree);
}
public void Setup()
{
_factory = FuxExMachinaTestFactoryProvider.GetTestFactory();
var scaleDegreeEvaluator = new ScaleDegreeEvaluator();
_ruleEvaluator = new DissonantLeapRuleEvaluator(scaleDegreeEvaluator, new CompositionContext());
}
/// <inheritdoc />
/// <summary>
/// AppogiaturaDecorator constructor.
/// </summary>
/// <param name="scaleDegreeEvaluator">The ScaleDegreeEvaluator to use</param>
/// <param name="random">The CryptoRandom to use</param>
public AppogiaturaDecorator(
ScaleDegreeEvaluator scaleDegreeEvaluator,
CryptoRandom random
) : base(
scaleDegreeEvaluator,
random
)
{
}
/// <inheritdoc />
/// <summary>
/// MordentDecorator constructor.
/// </summary>
/// <param name="scaleDegreeEvaluator">The ScaleDegreeEvaluator to use</param>
/// <param name="random">The CryptoRandom to use</param>
public MordentDecorator(
ScaleDegreeEvaluator scaleDegreeEvaluator,
CryptoRandom random
) : base(
scaleDegreeEvaluator,
random
)
{
}
/// <inheritdoc />
/// <summary>
/// PassingToneDecorator constructor.
/// </summary>
/// <param name="scaleDegreeEvaluator">The ScaleDegreeEvaluator to use</param>
/// <param name="random">The CryptoRandom to use</param>
public PassingToneDecorator(
ScaleDegreeEvaluator scaleDegreeEvaluator,
CryptoRandom random
) : base(
scaleDegreeEvaluator,
random
)
{
}
/// <summary>
/// NotePair constructor.
/// </summary>
/// <param name="cantusFirmusNote">The cantus firmus note</param>
/// <param name="counterPointNote">The counterpoint note</param>
/// <param name="arrivedFromCompositionContext">The CompositionContext from which this NotePair was generated</param>
/// <param name="arrivedFromNoteChoice">The NoteChoice which led to this NotePair being generated</param>
/// <param name="scaleDegreeEvaluator">The ScaleDegreeEvaluator to use with this NotePair</param>
public NotePair(
int cantusFirmusNote,
int counterPointNote,
CompositionContext arrivedFromCompositionContext,
NoteChoice arrivedFromNoteChoice,
ScaleDegreeEvaluator scaleDegreeEvaluator
)
{
CantusFirmusNote = cantusFirmusNote;
CounterPointNote = counterPointNote;
ArrivedFromCompositionContext = arrivedFromCompositionContext;
ArrivedFromNoteChoice = arrivedFromNoteChoice;
_scaleDegreeEvaluator = scaleDegreeEvaluator;
}
/// <inheritdoc />
/// <summary>
/// Decorates the composition based on the current and next notes.
/// </summary>
/// <param name="currentNote">The current note</param>
/// <param name="nextNote">The next note</param>
/// <returns>A list of decorative notes, possibly empty</returns>
protected override List <int> GetPossibleDecorations(int currentNote, int nextNote)
{
var currentScaleDegree = ScaleDegreeEvaluator.GetScaleDegreeFromNote(currentNote);
var nextScaleDegree = ScaleDegreeEvaluator.GetScaleDegreeFromNote(nextNote);
if (!currentScaleDegree.IsThirdWith(nextScaleDegree) || Random.Next(1, 3) % 2 != 0)
{
return(EmptyDecoration);
}
return(new List <int> {
(currentNote + nextNote) / 2
});
}
public static FuxExMachinaFactory GetTestFactory()
{
if (_instance != null)
{
return(_instance);
}
var random = new CryptoRandom();
var scaleDegreeEvaluator = new ScaleDegreeEvaluator();
var compositionContext = new CompositionContext();
var compositionContexts = new CompositionContextCollection();
var noteChoices = new NoteChoiceCollection();
var noteChoiceWeightGenerator = new NoteChoiceWeightGenerator(random);
var ruleEvaluatorFactory = new RuleEvaluatorFactory(
new AscendingSeventhRuleEvaluator(scaleDegreeEvaluator),
new DissonanceRuleEvaluator(),
new DissonantLeapRuleEvaluator(scaleDegreeEvaluator, compositionContext),
new DoubledLeapRuleEvaluator(),
new DoubledNoteRuleEvaluator(scaleDegreeEvaluator),
new LeapReturnRuleEvaluator(),
new MultipleLeapRuleEvaluator(),
new ParallelPerfectsRuleEvaluator(scaleDegreeEvaluator)
);
var aggregateEvaluator = new AggregateRuleEvaluator(ruleEvaluatorFactory);
var mordentDecorator = new MordentDecorator(scaleDegreeEvaluator, random);
var passingToneDecorator = new PassingToneDecorator(scaleDegreeEvaluator, random);
var appogiaturaDecorator = new AppogiaturaDecorator(scaleDegreeEvaluator, random);
_instance = new FuxExMachinaFactory(
compositionContexts,
noteChoices,
noteChoiceWeightGenerator,
scaleDegreeEvaluator,
new CompositionEvaluator(aggregateEvaluator),
new CompositionDecorator(passingToneDecorator, mordentDecorator, appogiaturaDecorator),
new CryptoRandom(),
new FuxExMachinaNullLogger()
);
return(_instance);
}
/// <summary>
/// FuxExMachinaFactory constructor.
/// </summary>
/// <param name="compositionContexts">The composition contexts to use</param>
/// <param name="noteChoices">The note choices to use</param>
/// <param name="noteChoiceWeightGenerator">The note choice weight generator to use</param>
/// <param name="scaleDegreeEvaluator">The scale degree evaluator to use</param>
/// <param name="compositionEvaluator">The composition evaluator to use</param>
/// <param name="compositionDecorator">The composition decorator to use</param>
/// <param name="random">The random number generator to use</param>
/// <param name="logger">The logger to use</param>
public FuxExMachinaFactory(
CompositionContextCollection compositionContexts,
NoteChoiceCollection noteChoices,
NoteChoiceWeightGenerator noteChoiceWeightGenerator,
ScaleDegreeEvaluator scaleDegreeEvaluator,
CompositionEvaluator compositionEvaluator,
CompositionDecorator compositionDecorator,
CryptoRandom random,
IFuxExMachinaLogger logger
)
{
CompositionContexts = compositionContexts;
NoteChoices = noteChoices;
NoteChoiceWeightGenerator = noteChoiceWeightGenerator;
ScaleDegreeEvaluator = scaleDegreeEvaluator;
CompositionEvaluator = compositionEvaluator;
CompositionDecorator = compositionDecorator;
Random = random;
Logger = logger;
}
/// <inheritdoc />
/// <summary>
/// Decorates the composition based on the current and next notes.
/// </summary>
/// <param name="currentNote">The current note</param>
/// <param name="nextNote">The next note</param>
/// <returns>A list of decorative notes, possibly empty</returns>
protected override List <int> GetPossibleDecorations(int currentNote, int nextNote)
{
var currentScaleDegree = ScaleDegreeEvaluator.GetScaleDegreeFromNote(currentNote);
var nextScaleDegree = ScaleDegreeEvaluator.GetScaleDegreeFromNote(nextNote);
if (!currentScaleDegree.IsAdjacentTo(nextScaleDegree) || Random.Next(1, 3) % 2 != 0)
{
return(EmptyDecoration);
}
if (currentNote < nextNote)
{
return(new List <int> {
currentNote + 1, currentNote - 1, currentNote
});
}
return(currentScaleDegree != ScaleDegree.Sixth
? new List <int> {
currentNote - 1, currentNote + 1, currentNote
}
: EmptyDecoration);
}
/// <summary>
/// CompositionContext constructor.
/// </summary>
/// <param name="previousNotes">The previous notes in the composition</param>
/// <param name="currentNotes">The current notes in the composition</param>
/// <param name="scaleDegreeEvaluator">ScaleDegreeEvaluator used to help initialize class properties</param>
public CompositionContext(NotePair previousNotes, NotePair currentNotes,
ScaleDegreeEvaluator scaleDegreeEvaluator)
{
CantusFirmusNoteScaleDegree = scaleDegreeEvaluator.GetScaleDegreeFromNote(currentNotes.CantusFirmusNote);
CantusFirmusNoteMotion = GetNoteMotionFromNotes(
previousNotes.CantusFirmusNote,
currentNotes.CantusFirmusNote
);
CantusFirmusNoteMotionSpan = GetNoteMotionSpanFromNotes(
previousNotes.CantusFirmusNote,
currentNotes.CantusFirmusNote
);
CounterPointNoteScaleDegree = scaleDegreeEvaluator.GetScaleDegreeFromNote(currentNotes.CounterPointNote);
CounterPointNoteMotion = GetNoteMotionFromNotes(
previousNotes.CounterPointNote,
currentNotes.CounterPointNote
);
CounterPointNoteMotionSpan = GetNoteMotionSpanFromNotes(
previousNotes.CounterPointNote,
currentNotes.CounterPointNote
);
}
/// <summary>
/// DoubledNoteRuleEvaluator constructor.
/// </summary>
/// <param name="scaleDegreeEvaluator">The ScaleDegreeEvaluator to use</param>
public DoubledNoteRuleEvaluator(ScaleDegreeEvaluator scaleDegreeEvaluator)
{
_scaleDegreeEvaluator = scaleDegreeEvaluator;
}
/// <summary>
/// ParallelPerfectsRuleEvaluator constructor.
/// </summary>
/// <param name="scaleDegreeEvaluator">The ScaleDegreeEvaluator to use</param>
public ParallelPerfectsRuleEvaluator(ScaleDegreeEvaluator scaleDegreeEvaluator)
{
_scaleDegreeEvaluator = scaleDegreeEvaluator;
}
/// <summary>
/// BaseCompositionDecorator constructor.
/// </summary>
/// <param name="scaleDegreeEvaluator">The ScaleDegreeEvaluator to use</param>
/// <param name="random">The CryptoRandom to use</param>
protected BaseCompositionDecorator(ScaleDegreeEvaluator scaleDegreeEvaluator, CryptoRandom random)
{
ScaleDegreeEvaluator = scaleDegreeEvaluator;
Random = random;
}
/// <summary>
/// DissonantLeapRuleEvaluator constructor.
/// </summary>
/// <param name="scaleDegreeEvaluator">The ScaleDegreeEvaluator to use</param>
/// <param name="context">The CompositionContext to use</param>
public DissonantLeapRuleEvaluator(ScaleDegreeEvaluator scaleDegreeEvaluator, CompositionContext context)
{
_scaleDegreeEvaluator = scaleDegreeEvaluator;
_context = context;
}
/// <summary>
/// AscendingSeventhRuleEvaluator constructor.
/// </summary>
/// <param name="scaleDegreeEvaluator">The ScaleDegreeEvaluator to use</param>
public AscendingSeventhRuleEvaluator(ScaleDegreeEvaluator scaleDegreeEvaluator)
{
_scaleDegreeEvaluator = scaleDegreeEvaluator;
}
