public void ChordFactoryTest_getChordRecomendationsByDegree()
{
Note key = NoteFactory.getNoteByName("C");
Note degree = NoteFactory.getNoteByName("G");
Mode mode = ModeFactory.getModeByName("Ionian");
List <Chord> recomendations = ChordFactory.getChordRecomendationsByTonic(key, degree, mode);
Assert.IsTrue(recomendations.Count() > 1);
}
public static List <Chord> getChordRecomendationsByLast(Note key, Chord lastChord, Mode mode)
{
List <Chord> chords = new List <Chord>();
List <Chord> fives = new List <Chord>();
List <Chord> sevens = new List <Chord>();
List <Chord> sixes = new List <Chord>();
int value;
int distance;
Note note;
bool foundDegree;
bool foundFifth = false;
bool foundSeventh = false;
bool foundSixth = false;
// V -> I -> IV
foundDegree = false;
distance = lastChord.getNoteAt(0).getValue() - key.getValue();
if (distance < 12)
{
distance = distance + 12;
}
if (mode.containsInterval(7 + distance) || mode.containsInterval(7 + distance - 12))
{
value = lastChord.getNoteAt(0).getValue() + 7;
if (value > 12)
{
value = value - 12;
}
note = NoteFactory.getNoteByValue(value, key);
foundDegree = true;
}
// May add b5 and #5 recomendations back in
/*
* else if (mode.containsInterval(6))
* {
* value = lastChord.getNoteAt(0).getValue() + 6;
* if (value > 12) { value = value - 12; }
* note = NoteFactory.getNoteByValue(value, key);
* foundDegree = true;
* }
* else if (mode.containsInterval(8))
* {
* value = lastChord.getNoteAt(0).getValue() + 8;
* if (value > 12) { value = value - 12; }
* note = NoteFactory.getNoteByValue(value, key);
* foundDegree = true;
* }
*/
else
{
note = NoteFactory.getNoteByValue(key.getValue(), key);
}
if (foundDegree)
{
fives = ChordFactory.getChordRecomendationsByTonic(key, note, mode);
foundFifth = true;
}
// VII -> I -> II
foundDegree = false;
distance = lastChord.getNoteAt(0).getValue() - key.getValue();
if (distance < 12)
{
distance = distance + 12;
}
if (mode.containsInterval(10 + distance) || mode.containsInterval(10 + distance - 12))
{
value = lastChord.getNoteAt(0).getValue() + 10;
if (value > 12)
{
value = value - 12;
}
note = NoteFactory.getNoteByValue(value, key);
foundDegree = true;
}
else if (mode.containsInterval(11 + distance) || mode.containsInterval(11 + distance - 12))
{
value = lastChord.getNoteAt(0).getValue() + 11;
if (value > 12)
{
value = value - 12;
}
note = NoteFactory.getNoteByValue(value, key);
foundDegree = true;
}
else
{
note = NoteFactory.getNoteByValue(key.getValue(), key);
}
if (foundDegree)
{
sevens = ChordFactory.getChordRecomendationsByTonic(key, note, mode);
foundSeventh = true;
}
// VI -> I -> III
foundDegree = false;
distance = lastChord.getNoteAt(0).getValue() - key.getValue();
if (distance < 12)
{
distance = distance + 12;
}
if (mode.containsInterval(9 + distance) || mode.containsInterval(9 + distance - 12))
{
value = lastChord.getNoteAt(0).getValue() + 9;
if (value > 12)
{
value = value - 12;
}
note = NoteFactory.getNoteByValue(value, key);
foundDegree = true;
}
else if (mode.containsInterval(8 + distance) || mode.containsInterval(8 + distance - 12))
{
value = lastChord.getNoteAt(0).getValue() + 8;
if (value > 12)
{
value = value - 12;
}
note = NoteFactory.getNoteByValue(value, key);
foundDegree = true;
}
else
{
note = NoteFactory.getNoteByValue(key.getValue(), key);
}
if (foundDegree)
{
sixes = ChordFactory.getChordRecomendationsByTonic(key, note, mode);
foundSixth = true;
}
if (foundFifth)
{
chords.AddRange(fives);
}
if (foundSeventh)
{
chords.AddRange(sevens);
}
if (foundSixth)
{
chords.AddRange(sixes);
}
return(chords);
}
