public static Cube4 RandomCube4(bool corner = true, bool wing = true, bool xcenter = true)
{
Tools.SetNPerm(corner ? Tools.rd.Next(40320) : 0, 8, out int[] cp);
Tools.SetNTwist(corner ? Tools.rd.Next(2187) : 0, 8, out int[] co);
for (int i = 0; i < 8; i++)
{
cp[i] = cp[i] * 3 + co[i];
}
int[] w, xc;
if (wing)
{
w = Wing.Random();
}
else
{
w = new int[24]; for (int i = 0; i < 24; i++)
{
w[i] = i;
}
}
if (xcenter)
{
xc = XCenter.Random();
}
else
{
xc = new int[24]; for (int i = 0; i < 24; i++)
{
xc[i] = i >> 2;
}
}
return(new Cube4(w, cp, xc));
}
// Must call Reset() before this in advance
public Cube4 GetCube4()
{
if (!Exist())
{
return(null);
}
double a = rd.NextDouble(), b = rd.NextDouble();
var c = rd.NextDouble() < CF ? Corner.odd[Array.FindIndex(OCPs, x => x > a * OCP)] :
Corner.even[Array.FindIndex(ECPs, x => x > a * ECP)];
var w = Wing.list[Array.FindIndex(WPs, x => x > b)];
var xc = XCenter.GetInstance(xcLimit);
return(new Cube4(c.GetInstance(), w.GetInstance(), xc));
}
public void Reset()
{
int index = 0;
long ECC = 0, OCC = 0;
foreach (var x in Corner.odd)
{
OCPs[index++] = (OCC += cornerParity.Test(true) && cornerLimit.Test(x) ? x.Count : 0) * 2.0 / Corner.Sum;
}
OCP = OCPs[OCPs.Length - 1];
CC = index = 0;
foreach (var x in Corner.even)
{
ECPs[index++] = (ECC += cornerParity.Test(false) && cornerLimit.Test(x) ? x.Count : 0) * 2.0 / Corner.Sum;
}
ECP = ECPs[ECPs.Length - 1];
CC = OCC + ECC;
CP = ECP + OCP;
CF = (double)OCC / CC;
WC = 0;
double OWC = 0, wingSum = (double)Wing.Sum;
for (index = 0; index < WPs.Length; ++index)
{
if (wingLimit.Test(Wing.list[index]))
{
WPs[index] = (double)(WC += Wing.list[index].Count) / wingSum;
if (Wing.list[index].Parity == 1)
{
OWC += (double)Wing.list[index].Count / wingSum;
}
}
}
WP = WPs[WPs.Length - 1];
WF = OWC / (double)WC;
XCC = XCenter.GetCount(xcLimit);
XCP = (double)XCC / XCenter.Sum;
}
public Cube4(int[] c, int[] w, int[] xc)
{
corner = new Corner(c);
wing = new Wing(w);
xcenter = new XCenter(xc);
}
public Cube4()
{
corner = new Corner();
wing = new Wing();
xcenter = new XCenter();
}