private static void initSym2Raw() {
int repIdx = 0;
EdgeCubies cube1 = new EdgeCubies();
EdgeCubies cube2 = new EdgeCubies();
Edge4 e = new Edge4();
byte[] t = new byte[8];
byte[] isRepTable = new byte[(N_RAW_COORD >> 3) + 1];
hasSym = new int[N_COORD];
for (int u = 0; u < N_RAW_COORD; ++u) {
if (Util.get1bit(isRepTable, u)) continue;
raw2sym[u] = repIdx << SYM_SHIFT;
e.raw_coord = u;
e.unpack(cube1);
/* Only retain configs without parity */
int ul = Util.get8Perm(cube1.cubies, 4);
for (int i = 0; i < 4; i++)
t[i] = (cube1.cubies[i] > 4) ? (byte) (cube1.cubies[i] - 8) : cube1.cubies[i];
for (int i = 4; i < 8; i++)
t[i] = (cube1.cubies[i + 8] > 4) ? (byte) (cube1.cubies[i + 8] - 8) : cube1.cubies[i + 8];
int uh = Util.get8Perm(t, 0);
if (Util.parity_perm8_table[ul] != Util.parity_perm8_table[uh])
continue; // getting rid of the parity.
for (int s = 1; s < N_SYM; ++s) {
cube1.conjugate(s, cube2);
e.pack(cube2);
Util.set1bit(isRepTable, e.raw_coord);
raw2sym[e.raw_coord] = (repIdx << SYM_SHIFT) + Symmetry.invSymIdx[s];
if (e.raw_coord == u) hasSym[repIdx] |= (1 << s);
}
sym2raw[repIdx++] = u;
}
}
private static void initSym2Raw() {
int repIdx = 0;
CenterCubies cube1 = new CenterCubies();
CenterCubies cube2 = new CenterCubies();
Center3 c = new Center3();
byte[] isRepTable = new byte[(N_RAW_COORD >> 3) + 1];
hasSym = new int[N_COORD];
for (int u = 0; u < N_RAW_COORD; ++u) {
if (Util.get1bit(isRepTable, u)) continue;
raw2sym[u] = repIdx << SYM_SHIFT;
c.raw_coord = u;
c.unpack(cube1);
for (int s = 1; s < N_SYM; ++s) {
cube1.rightMult(Symmetry.invSymIdx[s], cube2);
c.pack(cube2);
Util.set1bit(isRepTable, c.raw_coord);
raw2sym[c.raw_coord] = (repIdx << SYM_SHIFT) + Symmetry.invSymIdx[s];
if (c.raw_coord == u) hasSym[repIdx] |= (1 << s);
}
sym2raw[repIdx++] = u;
}
}