private void Init()
{
// Set up all possible alphabets for this group:
// Major (if key = C)
// C major, D dorian, E phrygian, F lydian, G mixolydian, A aolian, B locrian
// Minor: (if key = A minor)
// A minor, TODO....
// Really, I just generate the major or minor scale and set the appropriate triad members as goal tonesvia stability.
// equivalent to keeping the C major alphabet and changing the goal alphabet, but I'm using one alphabet with stability instead.
if (Key.Mode == KeyMode.Major)
{
for (int i = 1; i <= 7; i++)
{
possibleGroupAlphabets.Add(Alphabet.GetMajorScaleAlphabetWithTriadOnDegree(Key, i));
}
}
else
{
// Add all 3 minor scale types.
List <Alphabet> scales = new List <Alphabet>();
scales.Add(Alphabet.GetScaleAlphabet(Key, false, false));
scales.Add(Alphabet.GetScaleAlphabet(Key, true, false));
scales.Add(Alphabet.GetScaleAlphabet(Key, false, true));
foreach (Alphabet s in scales)
{
foreach (ScaleDegree sd in s)
{
possibleGroupAlphabets.Add(Alphabet.GetAlphabetFromScaleWithTriadOnDegree(Key, s, sd));
}
}
}
}
public override void Run()
{
if (group == null)
{
group = workspace.PickRandomGroupByRecency();
}
if (group == null)
{
return;
}
if (!workspace.groups.Contains(group))
{
return;
}
// Add to attention history.
workspace.RecordCodeletAttentionHistory(this, group.MinLocation);
workspace.RecordCodeletAttentionHistory(this, group.MaxLocation);
// Check the Larson expectedness vector.
// Score is high when expectation was relatively high.
double score;
Key key = workspace.Key;
Alphabet alphabet = group.Alphabet;
if (alphabet == null)
{
alphabet = Alphabet.GetScaleAlphabet(key);
}
List <float> expectedness = group.GetNoteExpectednessLarson(key, alphabet);
int num = expectedness.Count;
if (num < 2)
{
return;
}
if (expectedness[num - 1] > expectedness[num - 2])
{
score = Math.Min(100, 100 * (expectedness[num - 1] / Constants.MAX_LARSON_EXPECTEDNESS));
if (score > 25)
{
group.AddGroupReason(new GroupReasonEndMusicalForcesClosure(group, score));
}
}
}
/// <summary>
/// Guesses the scale degree for this note given a key.
/// </summary>
/// <param name="k"></param>
/// <returns></returns>
public ScaleDegree GetScaleDegree(Key k)
{
Alphabet a = Alphabet.GetScaleAlphabet(k);
foreach (ScaleDegree sd in a)
{
if (this.midi % 12 == k.GetScaleDegreePitch(sd, 0).MidiNumber % 12)
{
return(sd);
}
}
return(null);
}
