public IntervalPattern( IntervalQuality quality, IntervalQuantity quantity = IntervalQuantity.Unison)
{
this.quantity = quantity;
this.semitones = GetSemitones();
this.quality = quality;
}
public static IntervalQuality GetQuality(IntervalQuantity quantity, int semitones)
{
var intQuantity = (int) quantity;
var quant = intQuantity > 7 ? intQuantity % 7 : intQuantity;
var quality = IntervalToSemitones[quant].First(s => s == semitones);
if (quality != null)
return (IntervalQuality) quality;
throw new Exception();
}
public static Interval GetC4BasedInterval(IntervalQuality quality, IntervalQuantity quantity)
{
var C4 = new Pitch(new Step(StepLetter.C));
switch (quantity)
{
case IntervalQuantity.Unison:
if (quality == IntervalQuality.Perfect) return new Interval(C4, C4);
else throw new ArgumentException(string.Format(exceptionFormatString, quantity, quality));
break;
case IntervalQuantity.Second:
if (quality == IntervalQuality.Minor) return new Interval(C4, new Pitch(new Step(StepLetter.D), accidental: Accidentals.Flat));
if (quality == IntervalQuality.Major) return new Interval(C4, new Pitch(new Step(StepLetter.D)));
if (quality == IntervalQuality.Augmented) return new Interval(C4, new Pitch(new Step(StepLetter.D), accidental: Accidentals.Sharp));
if (quality == IntervalQuality.Diminished) return new Interval(C4, new Pitch(new Step(StepLetter.D), accidental: Accidentals.DoubleFlat));
else throw new ArgumentException(string.Format(exceptionFormatString, quantity, quality));
break;
case IntervalQuantity.Third:
if (quality == IntervalQuality.Minor) return new Interval(C4, new Pitch(new Step(StepLetter.E), accidental: Accidentals.Flat));
if (quality == IntervalQuality.Major) return new Interval(C4, new Pitch(new Step(StepLetter.E)));
if (quality == IntervalQuality.Augmented) return new Interval(C4, new Pitch(new Step(StepLetter.E), accidental: Accidentals.Sharp));
if (quality == IntervalQuality.Diminished) return new Interval(C4, new Pitch(new Step(StepLetter.E), accidental: Accidentals.DoubleFlat));
else throw new ArgumentException(string.Format(exceptionFormatString, quantity, quality));
break;
case IntervalQuantity.Fourth:
if (quality == IntervalQuality.Perfect) return new Interval(C4, new Pitch(new Step(StepLetter.F)));
if (quality == IntervalQuality.Augmented) return new Interval(C4, new Pitch(new Step(StepLetter.F), accidental: Accidentals.Sharp));
if (quality == IntervalQuality.Diminished) return new Interval(C4, new Pitch(new Step(StepLetter.F), accidental: Accidentals.Flat));
else throw new ArgumentException(string.Format(exceptionFormatString, quantity, quality));
break;
case IntervalQuantity.Fifth:
if (quality == IntervalQuality.Perfect) return new Interval(C4, new Pitch(new Step(StepLetter.G)));
if (quality == IntervalQuality.Augmented) return new Interval(C4, new Pitch(new Step(StepLetter.G), accidental: Accidentals.Sharp));
if (quality == IntervalQuality.Diminished) return new Interval(C4, new Pitch(new Step(StepLetter.G), accidental: Accidentals.Flat));
else throw new ArgumentException(string.Format(exceptionFormatString, quantity, quality));
break;
case IntervalQuantity.Sixth:
if (quality == IntervalQuality.Minor) return new Interval(C4, new Pitch(new Step(StepLetter.A), accidental: Accidentals.Flat));
if (quality == IntervalQuality.Major) return new Interval(C4, new Pitch(new Step(StepLetter.A)));
if (quality == IntervalQuality.Augmented) return new Interval(C4, new Pitch(new Step(StepLetter.A), accidental: Accidentals.Sharp));
if (quality == IntervalQuality.Diminished) return new Interval(C4, new Pitch(new Step(StepLetter.A), accidental: Accidentals.DoubleFlat));
else throw new ArgumentException(string.Format(exceptionFormatString, quantity, quality));
break;
case IntervalQuantity.Seventh:
if (quality == IntervalQuality.Minor) return new Interval(C4, new Pitch(new Step(StepLetter.B), accidental: Accidentals.Flat));
if (quality == IntervalQuality.Major) return new Interval(C4, new Pitch(new Step(StepLetter.B)));
if (quality == IntervalQuality.Augmented) return new Interval(C4, new Pitch(new Step(StepLetter.A), accidental: Accidentals.Sharp));
if (quality == IntervalQuality.Diminished) return new Interval(C4, new Pitch(new Step(StepLetter.A), accidental: Accidentals.DoubleFlat));
else throw new ArgumentException(string.Format(exceptionFormatString, quantity, quality));
break;
case IntervalQuantity.Octave:
var tempInterval = GetC4BasedInterval(quality, IntervalQuantity.Unison);
if (quality == IntervalQuality.Perfect) return new Interval(tempInterval.Root, tempInterval.Top.TransposeOctaves(1));
if (quality == IntervalQuality.Augmented) return new Interval(C4, new Pitch(new Step(StepLetter.A), accidental: Accidentals.Sharp));
if (quality == IntervalQuality.Diminished) return new Interval(C4, new Pitch(new Step(StepLetter.A), accidental: Accidentals.DoubleFlat));
else throw new ArgumentException(string.Format(exceptionFormatString, quantity, quality));
break;
case IntervalQuantity.Ninth:
break;
case IntervalQuantity.Tenth: break;
case IntervalQuantity.Eleventh: break;
case IntervalQuantity.Twelfth: break;
case IntervalQuantity.Thirteenth: break;
case IntervalQuantity.Fourteenth: break;
case IntervalQuantity.Fifteenth: break;
default: break;
}
return default(Interval);
}
