/// <summary>
/// Retrieves the current composition context.
/// </summary>
/// <returns></returns>
public CompositionContext GetCurrentCompositionContext()
{
if (_notePairs.Count > 1)
{
return(_compositionContexts.GetSpecificContext(
_factory.CreateCompositionContext(
_notePairs[_notePairs.Count - 2],
_notePairs[_notePairs.Count - 1]
)
));
}
return(_compositionContexts.GetSpecificContext(
_factory.CreateCompositionContext(
NoteMotion.Descending,
NoteMotionSpan.Step,
ScaleDegree.Root,
NoteMotion.Descending,
NoteMotionSpan.Step,
ScaleDegree.Root
)
));
}
/// <summary>
/// Minimizes the roll space for the given CompositionContext and detrimental NoteChoice to help prevent choosing
/// that detrimental note again.
/// </summary>
/// <param name="context">The CompositionContext which led to the NoteChoice being chosen</param>
/// <param name="noteChoice">The detrimental NoteChoice</param>
public void MinimizeDetrimentalNoteChoiceWeight(CompositionContext context, NoteChoice noteChoice)
{
var specificContext = _compositionContexts.GetSpecificContext(context);
var noteChoiceWeightsNoteChoices = StrategyDictionary[specificContext];
var foundNoteChoiceWeightNoteChoice =
noteChoiceWeightsNoteChoices.FirstOrDefault(
noteWeightNoteChoice => noteWeightNoteChoice.NoteChoice.Equals(noteChoice)
);
var index = noteChoiceWeightsNoteChoices.IndexOf(foundNoteChoiceWeightNoteChoice);
switch (index)
{
case -1:
return;
case 0:
var firstNoteChoiceWeightNoteChoice = noteChoiceWeightsNoteChoices[0];
var secondNoteChoiceWeightNoteChoice = noteChoiceWeightsNoteChoices[1];
firstNoteChoiceWeightNoteChoice.NoteChoiceWeight.Weight = AdjustedNoteChoiceWeightValue;
firstNoteChoiceWeightNoteChoice.NoteChoiceWeight.WeightCeiling = AdjustedNoteChoiceWeightValue;
secondNoteChoiceWeightNoteChoice.NoteChoiceWeight.WeightFloor =
firstNoteChoiceWeightNoteChoice.NoteChoiceWeight.Weight + 1;
secondNoteChoiceWeightNoteChoice.NoteChoiceWeight.Weight =
secondNoteChoiceWeightNoteChoice.NoteChoiceWeight.WeightCeiling -
secondNoteChoiceWeightNoteChoice.NoteChoiceWeight.WeightFloor;
break;
default:
if (index == noteChoiceWeightsNoteChoices.Count - 1)
{
var lastNoteChoiceWeightNoteChoice =
noteChoiceWeightsNoteChoices[noteChoiceWeightsNoteChoices.Count - 1];
var secondToLastNoteChoiceWeightNoteChoice =
noteChoiceWeightsNoteChoices[noteChoiceWeightsNoteChoices.Count - 2];
lastNoteChoiceWeightNoteChoice.NoteChoiceWeight.Weight = AdjustedNoteChoiceWeightValue;
lastNoteChoiceWeightNoteChoice.NoteChoiceWeight.WeightFloor =
_noteChoiceWeightGenerator.GetNoteChoiceWeightCeiling(noteChoiceWeightsNoteChoices.Count) -
lastNoteChoiceWeightNoteChoice.NoteChoiceWeight.Weight;
secondToLastNoteChoiceWeightNoteChoice.NoteChoiceWeight.WeightCeiling =
lastNoteChoiceWeightNoteChoice.NoteChoiceWeight.WeightFloor - 1;
secondToLastNoteChoiceWeightNoteChoice.NoteChoiceWeight.Weight =
secondToLastNoteChoiceWeightNoteChoice.NoteChoiceWeight.WeightCeiling -
secondToLastNoteChoiceWeightNoteChoice.NoteChoiceWeight.WeightFloor;
}
else
{
var noteChoiceWeightNoteChoice = noteChoiceWeightsNoteChoices[index];
var nextNoteChoiceWeightNoteChoice = noteChoiceWeightsNoteChoices[index + 1];
noteChoiceWeightNoteChoice.NoteChoiceWeight.Weight = AdjustedNoteChoiceWeightValue;
noteChoiceWeightNoteChoice.NoteChoiceWeight.WeightCeiling =
noteChoiceWeightNoteChoice.NoteChoiceWeight.WeightFloor +
noteChoiceWeightNoteChoice.NoteChoiceWeight.Weight;
nextNoteChoiceWeightNoteChoice.NoteChoiceWeight.WeightFloor =
noteChoiceWeightNoteChoice.NoteChoiceWeight.WeightCeiling + 1;
nextNoteChoiceWeightNoteChoice.NoteChoiceWeight.Weight =
nextNoteChoiceWeightNoteChoice.NoteChoiceWeight.WeightCeiling -
nextNoteChoiceWeightNoteChoice.NoteChoiceWeight.WeightFloor;
}
break;
}
}