public bool IsSimilar(TwelveToneSet other)
{
if (other.Count != this.Count)
{
return(false);
}
if (this.Equals(other))
{
return(true);
}
TwelveToneSet copy = new TwelveToneSet(this);
for (int i = 1; i < TWELVE; i++)
{
copy = copy.ShiftRight(1);
if (copy.Equals(other))
{
return(true);
}
}
return(false);
}
/// <summary>
/// Distance based on the number of common underlying Scales
/// </summary>
public int DistanceScales(TwelveToneSet other)
{
int count = 0;
TwelveToneSet copy = new TwelveToneSet(majorScale);
for (int i = 0; i < TWELVE; i++)
{
if (this.CoveredBy(copy) && other.CoveredBy(copy))
{
count++;
}
copy.ShiftRight(1);
}
int ret = Math.Min(CountMajorScales(), other.CountMajorScales()) - count;
return(ret);
}
public bool CoveredByAnySimilar(TwelveToneSet other)
{
if (this.CoveredBy(other))
{
return(true);
}
TwelveToneSet copy = new TwelveToneSet(this);
for (int i = 1; i < TWELVE; i++)
{
copy = copy.ShiftRight(1);
if (copy.CoveredBy(other))
{
return(true);
}
}
return(false);
}
int CountMajorScales()
{
int count = 0;
TwelveToneSet copy = new TwelveToneSet(majorScale);
if (this.CoveredBy(copy))
{
count++;
}
for (int i = 1; i < TWELVE; i++)
{
copy.ShiftRight(1);
if (this.CoveredBy(copy))
{
count++;
}
}
return(count);
}
/// <summary>
/// Produces a list containing all similar scales.
/// For example, if given only major scale (or similarly only minor scale)
/// it will return: ionian(major), dorian, phrygian, lydian, mixolydian, aeolian and locrian scale.
/// </summary>
private static List <TwelveToneSet> CalculateAllScales(List <TwelveToneSet> scales)
{
if (scales == null)
{
return(null);
}
// Assert each scale is rooted, no two scales are similar
for (int i = 0; i < scales.Count; i++)
{
Debug.Assert(scales[i].IsRooted);
for (int j = i + 1; j < scales.Count; j++)
{
Debug.Assert(!scales[i].IsSimilar(scales[j]));
}
}
List <TwelveToneSet> allScales = new List <TwelveToneSet>();
foreach (var scale in scales)
{
TwelveToneSet currScale = scale;
do
{
// Shift to next inversion e.g. ionian to dorian
do
{
currScale = currScale.ShiftRight(1);
} while (!currScale.IsRooted);
allScales.Add(currScale);
} while (currScale != scale);
}
return(allScales);
}