int getFlipSym() {
if (FlipR2S != null) {
return FlipR2S[getFlip()];
}
if (temps == null) {
temps = new CubieCube();
}
for (int k = 0; k < 16; k += 2) {
EdgeConjugate(this, SymInv[k], temps);
int idx = Util.binarySearch(FlipS2R, temps.getFlip());
if (idx != 0xffff) {
return (idx << 3) | (k >> 1);
}
}
return 0;
}
static void initFlipSym2Raw() {
CubieCube c = new CubieCube();
CubieCube d = new CubieCube();
int[] occ = new int[2048 >> 5];
int count = 0;
for (int i = 0; i < 2048 >> 5; occ[i++] = 0) ;
FlipR2S = new char[2048];
for (int i = 0; i < 2048; i++) {
if ((occ[i >> 5] & (1 << (i & 0x1f))) == 0) {
c.setFlip(i);
for (int s = 0; s < 16; s += 2) {
EdgeConjugate(c, s, d);
int idx = d.getFlip();
if (idx == i) {
SymStateFlip[count] |= 1 << (s >> 1);
}
occ[idx >> 5] |= 1 << (idx & 0x1f);
FlipR2S[idx] = (char) ((count << 3) | (s >> 1));
}
FlipS2R[count++] = (char) i;
}
}
}