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chessboard pattern in unrectified {4,n} tilings

This commit is contained in:
Zeno Rogue 2020-09-16 18:48:32 +02:00
parent 722ba41799
commit dd113c0f46
1 changed files with 22 additions and 0 deletions
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22
pattern2.cpp
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@ -90,6 +90,28 @@ EX int chessvalue(cell *c) {
#if CAP_GP
if(WARPED)
return gp::untruncated_shift(c) == 2;
else if(UNRECTIFIED && a4) {
auto li = gp::get_local_info(c);
bool odd_a = gp::param.first & 1;
bool odd_b = gp::param.second & 1;
bool odd_S7 = S7 & 1;
// odd-odd
if(odd_a && odd_b)
return (li.relative.second & 1) ^ (li.last_dir & 1) ^ (c->master->dm4 & 1) ^ ((c->master->emeraldval & 1) ? 1 : 0);
else if(odd_a || odd_b) {
/* int swapped = 0;
cellwalker cw(c, 0);
while((li.relative.first ^ li.relative.second) & 1) {
cw += wstep; cw += 2; swapped ^= 1;
} */
if((li.relative.first ^ li.relative.second) & 1)
return (li.relative.first & 1) ^ ((c->master->cmove(0)->emeraldval & 4) ? 1 : 0);
else
return (li.relative.first & 1) ^ ((c->master->emeraldval & 4) ? 1 : 0);
}
else
return (li.relative.second & 1) ^ (li.last_dir & 1) ^ ((c->master->emeraldval & 1) ? 1 : 0);
}
else
#endif
return celldist(c) & 1;