static int _generate_corners(uint8_t * cornersOut) {
Perm * p = rand_perm(8);
srand(time(NULL));
int i;
for (i = 0; i < 8; i++) {
int piece = p->map[i];
int coset = cube_perm_corner_coset(piece, i);
int perm = rand() % 3;
if (perm != 0) perm += 3; // perms are 0, 4, and 5
int orientation = symmetry_operation_compose(coset, perm);
cornersOut[i] = piece | (orientation << 4);
}
while (!validate_corner_orientation(cornersOut)) {
int sym = (cornersOut[7] >> 4) & 7;
sym = symmetry_operation_compose(sym, 4);
cornersOut[7] &= 0xf;
cornersOut[7] |= (sym << 4);
}
int parity = perm_parity(p);
perm_free(p);
return parity;
}
int main( int argc, char ** argv)
{
perm_t * u = perm_new();
assert( u != NULL );
printf("created perm %p\n",u);
perm_set_name(u,"ken");
printf("set perm %s\n",perm_get_name(u));
assert( strcmp(perm_get_name(u),"ken") == 0 );
perm_free(u);
return 0;
}
static void _generate_edges(uint8_t * edgesOut, int cornerParity) {
Perm * p = rand_perm(12);
if (perm_parity(p) != cornerParity) {
rand_change_parity(p);
}
uint16_t edgeOrientations = 0;
int i;
for (i = 0; i < 12; i++) {
int piece = p->map[i];
int s1, s2;
cube_perm_edge_symmetries(piece, i, &s1, &s2);
int sym = rand() % 2 == 0 ? s1 : s2;
edgesOut[i] = piece | (sym << 4);
if (i == 11) {
if (!validate_edges(edgesOut)) {
int newSym = sym == s1 ? s2 : s1;
edgesOut[i] = piece | (newSym << 4);
}
}
}
perm_free(p);
}
void perm_release (Permissions_t perm)
{
unsigned h;
perm_free (perm_lookup (perm, &h));
}
