private List <Pitch> GenerateBassPositions()
{
List <Pitch> bassPositions = new List <Pitch>();
for (int oct = Pitch.BasLowestOctave(); oct <= Pitch.BasHighestOctave(); ++oct)
{
Pitch pitch = new Pitch(GetChordLnDegInversion(ct.bassInversion), oct);
if (pitch.IsWithinTheRange(Part.Bas))
{
bassPositions.Add(pitch);
}
}
return(bassPositions);
}
private void GenerateUpper3Step(bool standard, Pitch bas, List <LnDegInversion> upper3, int step, PositionOfAChord positionOfAChord)
{
for (int i = 0; i < upper3.Count; ++i)
{
for (int tenOct = Pitch.TenLowestOctave(); tenOct <= Pitch.TenHighestOctave(); ++tenOct)
{
Pitch ten = new Pitch(upper3[i], tenOct);
if (!ten.IsWithinTheRange(Part.Ten))
{
continue;
}
for (int altOct = Pitch.AltLowestOctave(); altOct <= Pitch.AltHighestOctave(); ++altOct)
{
Pitch alt = new Pitch(upper3[(i + step) % upper3.Count], altOct);
if (!alt.IsWithinTheRange(Part.Alt))
{
continue;
}
for (int sopOct = Pitch.SopLowestOctave(); sopOct <= Pitch.SopHighestOctave(); ++sopOct)
{
Pitch sop = new Pitch(upper3[(i + step * 2) % upper3.Count], sopOct);
if (!sop.IsWithinTheRange(Part.Sop))
{
continue;
}
Chord chord = new Chord(ct, standard, bas, ten, alt, sop);
if (chord.Verdict != VerdictValue.Delist &&
chord.IsWithinTheRange() &&
chord.Upper3PositionIsCorrect() &&
!chordList.Contains(chord, new ChordEqualityComparer()))
{
//System.Console.WriteLine("{0} {1} {2}", ten.LetterName.LN, alt.LetterName.LN, sop.LetterName.LN);
chordList.Add(chord);
}
}
}
}
}
}
private void GenerateUpper3(bool standard, Pitch bas, List <LnDegInversion> upper3, PositionOfAChord positionOfAChord)
{
GenerateUpper3Step(standard, bas, upper3, 1, positionOfAChord);
GenerateUpper3Step(standard, bas, upper3, 2, positionOfAChord);
}
/// <summary>
/// rhsとの音程(1度=0) 絶対値。同度=0、1オクターブ=7
/// </summary>
/// <returns>
/// 0: 完全1度、増一度、重増一度
/// 1: 短二度、長二度、減二度、増二度、重増二度
/// 2: 短3度、長3度、減3度、重減3度、増3度、重増3度
/// 3: 完全4度、増4度、減4度、…
/// 4: 5度
/// 7: 8度
/// 8: 9度
/// 11: 12度
/// </returns>
public int AbsIntervalNumberWith(Pitch rhs)
{
return(Math.Abs(HigherIntervalTo(rhs)));
}
/// <summary>
/// 楽譜の上でrhsの上に来るか下に来るか。
/// 正: rhsのほうが低い 数字は度。
/// 負: rhsのほうが高い 数字は度。
/// 例: ten.HigherIntervalTo(bas) > 0
/// 注：この比較は(フラットやシャープを考慮しているが)あくまで楽譜の上で
/// 上か下かを判断するものでCes4よりもHis3のほうが低いと判断する。
/// </summary>
/// <param name="rhs">比較対象のピッチ。</param>
public int HigherIntervalTo(Pitch rhs)
{
return(GetIntervalNumberFromC0() - rhs.GetIntervalNumberFromC0());
}
/// <summary>
/// rhsとの半音の数(絶対値)。0==同音、12==1オクターブ
/// </summary>
/// <param name="rhs">比較対象。</param>
public int AbsNumberOfSemitonesWith(Pitch rhs)
{
return(Math.Abs(HigherPitchTo(rhs)));
}
/// <summary>
/// MIDIで発音したときのピッチを比較する。
/// 正: rhsのほうが低い 数字は半音の数。
/// 負: rhsのほうが高い 数字は半音の数。
/// 例: ten.HigherPitchTo(bas) > 0
/// </summary>
public int HigherPitchTo(Pitch rhs)
{
return(GetMidiPitchValue() - rhs.GetMidiPitchValue());
}
public Pitch(Pitch rhs)
{
ldi = rhs.ldi;
octave = rhs.octave;
}
