/// <summary>
/// 주어진 화음과 자연스럽게 이어지도록 새 화음을 초기화합니다.
/// </summary>
/// <param name="c"></param>
public Chord(Form1.Theme theme, Chord c)
{
Random r = new Random();
int rand;
int oldP, p;
switch (theme)
{
case Form1.Theme.Autumn:
#region Autumn Chord
maxOctave = 5;
minOctave = 4;
rand = r.Next(17);
switch (rand)
{
case 1:
case 2:
case 3:
case 4:
case 5:
type = Type.Major;
break;
case 8:
case 9:
case 10:
type = Type.minor;
break;
case 11:
type = Type.sus2;
break;
case 12:
case 13:
type = Type.sus4;
break;
case 14:
case 6:
type = Type.M7;
break;
case 15:
case 7:
type = Type.m7;
break;
default:
type = c.type;
break;
}
//root = (Root)r.Next(12);
rand = r.Next(10);
switch (rand)
{
case 1:
case 2:
case 3:
root = c.root;
break;
case 4:
case 5:
case 6:
root = (Root)(((int)c.root + 7) % 12);
break;
case 7:
case 8:
case 9:
root = (Root)(((int)c.root + 5) % 12);
break;
case 10:
if (c.type == Type.Major)
{
root = (Root)(((int)c.root - 3) % 12);
type = Type.minor;
}
else if (c.type == Type.minor)
{
root = (Root)(((int)c.root + 3) % 12);
type = Type.Major;
}
else if (c.type == Type.dim)
{
type = c.type;
rand = r.Next(2);
if (rand == 0)
{
root = (Root)(((int)c.root + 3) % 12);
}
else
{
root = (Root)(((int)c.root - 3) % 12);
}
}
else if (c.type == Type.aug)
{
type = c.type;
rand = r.Next(2);
if (rand == 0)
{
root = (Root)(((int)c.root + 4) % 12);
}
else
{
root = (Root)(((int)c.root - 4) % 12);
}
}
else
{
rand = r.Next(2);
if (rand == 0)
{
root = (Root)(((int)c.root + 3) % 12);
type = Type.Major;
}
else
{
root = (Root)(((int)c.root - 3) % 12);
type = Type.minor;
}
}
break;
default: // Unused
root = (Root)r.Next(12);
break;
}
rand = r.Next(15);
octave = c.octave;
switch (rand)
{
case 0:
octave -= 1;
if (octave < minOctave)
{
octave = minOctave + 1;
}
break;
case 1:
case 2:
case 3:
octave -= 1;
if (octave < minOctave)
{
octave = minOctave;
}
break;
case 4:
case 5:
case 6:
case 7:
case 8:
case 9:
case 10:
case 11:
break;
case 12:
case 13:
case 14:
octave += 1;
if (octave > maxOctave)
{
octave = maxOctave;
}
break;
default:
octave += 1;
if (octave > maxOctave)
{
octave = maxOctave - 1;
}
break;
}
if (octave > maxOctave)
{
octave = maxOctave;
}
if (octave < minOctave)
{
octave = minOctave;
}
oldP = (int)c.root + c.octave * 12;
p = (int)root + octave * 12;
while (oldP + 12 < p)
{
octave--;
p = (int)root + octave * 12;
}
while (oldP - 12 > p)
{
octave++;
p = (int)root + octave * 12;
}
if (octave > maxOctave)
{
octave = maxOctave;
}
if (octave < minOctave)
{
octave = minOctave;
}
break;
#endregion
case Form1.Theme.Rain:
#region Rain Chord
maxOctave = 8;
minOctave = 5;
rand = r.Next(17);
switch (rand)
{
case 1:
case 2:
case 3:
case 4:
type = Type.minor;
break;
case 5:
case 6:
type = Type.m7;
break;
case 7:
type = Type.Major;
break;
case 8:
case 9:
case 10:
type = Type.M7;
break;
case 11:
type = Type.sus2;
break;
case 12:
case 13:
type = Type.sus4;
break;
case 14:
type = Type.aug;
break;
case 15:
type = Type.dim;
break;
default:
type = c.type;
break;
}
//root = (Root)r.Next(12);
rand = r.Next(10);
switch (rand)
{
case 1:
case 2:
case 3:
root = c.root;
break;
case 4:
case 5:
case 6:
root = (Root)(((int)c.root + 7) % 12);
break;
case 7:
case 8:
case 9:
root = (Root)(((int)c.root + 5) % 12);
break;
case 10:
if (c.type == Type.Major)
{
root = (Root)(((int)c.root - 3) % 12);
type = Type.minor;
}
else if (c.type == Type.minor)
{
root = (Root)(((int)c.root + 3) % 12);
type = Type.Major;
}
else if (c.type == Type.dim)
{
type = c.type;
rand = r.Next(2);
if (rand == 0)
{
root = (Root)(((int)c.root + 3) % 12);
}
else
{
root = (Root)(((int)c.root - 3) % 12);
}
}
else if (c.type == Type.aug)
{
type = c.type;
rand = r.Next(2);
if (rand == 0)
{
root = (Root)(((int)c.root + 4) % 12);
}
else
{
root = (Root)(((int)c.root - 4) % 12);
}
}
else
{
rand = r.Next(2);
if (rand == 0)
{
root = (Root)(((int)c.root + 3) % 12);
type = Type.Major;
}
else
{
root = (Root)(((int)c.root - 3) % 12);
type = Type.minor;
}
}
break;
default: // Unused
root = (Root)r.Next(12);
break;
}
rand = r.Next(15);
octave = c.octave;
switch (rand)
{
case 0:
octave -= 1;
if (octave < minOctave)
{
octave = minOctave + 1;
}
break;
case 1:
case 2:
case 3:
octave -= 1;
if (octave < minOctave)
{
octave = minOctave;
}
break;
case 4:
case 5:
case 6:
case 7:
case 8:
case 9:
case 10:
case 11:
break;
case 12:
case 13:
case 14:
octave += 1;
if (octave > maxOctave)
{
octave = maxOctave;
}
break;
default:
octave += 1;
if (octave > maxOctave)
{
octave = maxOctave - 1;
}
break;
}
if (octave > maxOctave)
{
octave = maxOctave;
}
if (octave < minOctave)
{
octave = minOctave;
}
oldP = (int)c.root + c.octave * 12;
p = (int)root + octave * 12;
while (oldP + 12 < p)
{
octave--;
p = (int)root + octave * 12;
}
while (oldP - 12 > p)
{
octave++;
p = (int)root + octave * 12;
}
if (octave > maxOctave)
{
octave = maxOctave;
}
if (octave < minOctave)
{
octave = minOctave;
}
break;
#endregion
case Form1.Theme.Star:
#region Star Chord
maxOctave = 8;
minOctave = 5;
switch (c.type)
{
case Type.Major:
case Type.M7:
rand = r.Next(8);
switch (rand)
{
case 0:
root = (Root)(((int)c.root - 3) % 12);
type = Type.minor;
break;
case 1:
root = c.root;
type = Type.aug;
break;
case 2:
root = (Root)(((int)c.root + 1) % 12);
type = Type.dim;
break;
case 3:
root = (Root)(((int)c.root + 4) % 12);
type = Type.dim;
break;
case 4:
root = (Root)(((int)c.root + 4) % 12);
type = Type.minor;
break;
case 5:
root = c.root;
type = Type.minor;
break;
case 6:
root = c.root;
type = Type.sus2;
break;
case 7:
root = c.root;
type = Type.sus4;
break;
}
break;
case Type.minor:
case Type.m7:
rand = r.Next(8);
switch (rand)
{
case 0:
root = c.root;
type = Type.dim;
break;
case 1:
root = (Root)(((int)c.root - 4) % 12);
type = Type.Major;
break;
case 2:
root = (Root)(((int)c.root - 3) % 12);
type = Type.dim;
break;
case 3:
root = (Root)(((int)c.root + 3) % 12);
type = Type.Major;
break;
case 4:
root = (Root)(((int)c.root + 3) % 12);
type = Type.aug;
break;
case 5:
root = c.root;
type = Type.Major;
break;
case 6:
root = c.root;
type = Type.sus2;
break;
case 7:
root = c.root;
type = Type.sus4;
break;
}
break;
case Type.sus2:
rand = r.Next(6);
switch (rand)
{
case 0:
root = c.root;
type = Type.Major;
break;
case 1:
root = c.root;
type = Type.minor;
break;
case 2:
root = c.root;
type = Type.sus4;
break;
case 3:
root = (Root)(((int)c.root - 5) % 12);
type = Type.minor;
break;
case 4:
root = (Root)(((int)c.root - 5) % 12);
type = Type.Major;
break;
case 5:
root = (Root)(((int)c.root - 5) % 12);
type = Type.sus2;
break;
}
break;
case Type.sus4:
rand = r.Next(6);
switch (rand)
{
case 0:
root = c.root;
type = Type.Major;
break;
case 1:
root = c.root;
type = Type.minor;
break;
case 2:
root = c.root;
type = Type.sus2;
break;
case 3:
root = (Root)(((int)c.root + 5) % 12);
type = Type.minor;
break;
case 4:
root = (Root)(((int)c.root + 5) % 12);
type = Type.Major;
break;
case 5:
root = (Root)(((int)c.root + 5) % 12);
type = Type.sus4;
break;
}
break;
case Type.aug:
rand = r.Next(6);
switch (rand)
{
case 0:
root = c.root;
type = Type.Major;
break;
case 1:
root = (Root)(((int)c.root - 3) % 12);
type = Type.minor;
break;
case 2:
root = (Root)(((int)c.root + 1) % 12);
type = Type.minor;
break;
case 3:
root = (Root)(((int)c.root + 4) % 12);
type = Type.Major;
break;
case 4:
root = (Root)(((int)c.root - 4) % 12);
type = Type.Major;
break;
case 5:
root = (Root)(((int)c.root + 5) % 12);
type = Type.minor;
break;
}
break;
case Type.dim:
rand = r.Next(11);
switch (rand)
{
case 0:
case 7:
root = c.root;
type = Type.minor;
break;
case 1:
case 8:
root = (Root)(((int)c.root - 4) % 12);
type = Type.Major;
break;
case 2:
root = (Root)(((int)c.root - 3) % 12);
type = Type.dim;
break;
case 3:
root = (Root)(((int)c.root + 3) % 12);
type = Type.dim;
break;
case 4:
case 9:
root = (Root)(((int)c.root + 3) % 12);
type = Type.minor;
break;
case 5:
case 10:
root = (Root)(((int)c.root - 1) % 12);
type = Type.Major;
break;
case 6:
root = (Root)(((int)c.root + 6) % 12);
type = Type.dim;
break;
}
break;
}
rand = r.Next(15);
octave = c.octave;
switch (rand)
{
case 0:
octave -= 1;
if (octave < minOctave)
{
octave = minOctave + 1;
}
break;
case 1:
case 2:
case 3:
octave -= 1;
if (octave < minOctave)
{
octave = minOctave;
}
break;
case 4:
case 5:
case 6:
case 7:
case 8:
case 9:
case 10:
case 11:
break;
case 12:
case 13:
case 14:
octave += 1;
if (octave > maxOctave)
{
octave = maxOctave;
}
break;
default:
octave += 1;
if (octave > maxOctave)
{
octave = maxOctave - 1;
}
break;
}
if (octave > maxOctave)
{
octave = maxOctave;
}
if (octave < minOctave)
{
octave = minOctave;
}
oldP = (int)c.root + c.octave * 12;
p = (int)root + octave * 12;
while (oldP + 12 < p)
{
octave--;
p = (int)root + octave * 12;
}
while (oldP - 12 > p)
{
octave++;
p = (int)root + octave * 12;
}
if (octave > maxOctave)
{
octave = maxOctave;
}
if (octave < minOctave)
{
octave = minOctave;
}
break;
#endregion
}
}
/// <summary>
/// 랜덤으로 화음을 초기화합니다.
/// </summary>
public Chord(Form1.Theme theme)
{
Random r = new Random();
int rand;
switch (theme)
{
case Form1.Theme.Autumn:
#region Autumn Chord
maxOctave = 5;
minOctave = 4;
root = (Root)r.Next(12);
rand = r.Next(15);
switch (rand)
{
case 1:
case 2:
case 3:
case 4:
case 5:
case 6:
type = Type.Major;
break;
case 7:
case 8:
case 9:
case 10:
type = Type.minor;
break;
case 11:
type = Type.sus2;
break;
case 12:
case 13:
type = Type.sus4;
break;
case 14:
type = Type.M7;
break;
default:
type = Type.m7;
break;
}
rand = r.Next(15);
octave = 5;
switch (rand)
{
case 0:
octave -= 2;
break;
case 1:
case 2:
case 3:
octave -= 1;
break;
case 4:
case 5:
case 6:
case 7:
case 8:
case 9:
case 10:
case 11:
break;
case 12:
case 13:
case 14:
octave += 1;
break;
default:
octave += 2;
break;
}
if (octave > maxOctave)
{
octave = maxOctave;
}
if (octave < minOctave)
{
octave = minOctave;
}
break;
#endregion
case Form1.Theme.Rain:
#region Rain Chord
maxOctave = 8;
minOctave = 5;
root = (Root)r.Next(12);
rand = r.Next(15);
switch (rand)
{
case 1:
case 2:
case 3:
case 4:
type = Type.minor;
break;
case 5:
case 6:
type = Type.m7;
break;
case 7:
type = Type.Major;
break;
case 8:
case 9:
case 10:
type = Type.M7;
break;
case 11:
type = Type.sus2;
break;
case 12:
case 13:
type = Type.sus4;
break;
case 14:
type = Type.aug;
break;
default:
type = Type.dim;
break;
}
rand = r.Next(15);
octave = 6;
switch (rand)
{
case 0:
octave -= 2;
break;
case 1:
case 2:
case 3:
octave -= 1;
break;
case 4:
case 5:
case 6:
case 7:
case 8:
case 9:
case 10:
case 11:
break;
case 12:
case 13:
case 14:
octave += 1;
break;
default:
octave += 2;
break;
}
if (octave > maxOctave)
{
octave = maxOctave;
}
if (octave < minOctave)
{
octave = minOctave;
}
break;
#endregion
case Form1.Theme.Star:
#region Star Chord
maxOctave = 8;
minOctave = 5;
root = (Root)r.Next(12);
rand = r.Next(15);
switch (rand)
{
case 1:
case 2:
case 3:
case 4:
case 5:
type = Type.Major;
break;
case 6:
case 7:
case 8:
case 9:
case 10:
type = Type.minor;
break;
case 11:
type = Type.sus2;
break;
case 12:
case 13:
type = Type.sus4;
break;
case 14:
type = Type.aug;
break;
default:
type = Type.dim;
break;
}
rand = r.Next(15);
octave = 6;
switch (rand)
{
case 0:
octave -= 2;
break;
case 1:
case 2:
case 3:
octave -= 1;
break;
case 4:
case 5:
case 6:
case 7:
case 8:
case 9:
case 10:
case 11:
break;
case 12:
case 13:
case 14:
octave += 1;
break;
default:
octave += 2;
break;
}
if (octave > maxOctave)
{
octave = maxOctave;
}
if (octave < minOctave)
{
octave = minOctave;
}
break;
#endregion
}
}
