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provided celldistance_approx for binary4 and kitedart3

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Zeno Rogue 2019-08-02 18:54:57 +02:00
parent 17ae3917e4
commit fac3866d7e
1 changed files with 17 additions and 1 deletions
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18
binary-tiling.cpp
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@ -813,13 +813,29 @@ int celldistance3_hex(heptagon *c1, heptagon *c2) {
return steps;
}
int celldistance3_approx(heptagon *c1, heptagon *c2) {
int d = 0;
while(true) {
if(d > 1000000) return d; /* sanity check */
if(c1 == c2) return d;
if(neighborId(c1->c7, c2->c7) >= 0) return d + 1;
forCellEx(c3, c1->c7) if(neighborId(c3, c2->c7) >= 0) return d + 2;
if(c1->distance > c2->distance) c1=c1->cmove(updir()), d++;
else c2=c2->cmove(updir()), d++;
}
}
int celldistance3(heptagon *c1, heptagon *c2) {
switch(geometry) {
case gBinary3: return celldistance3_square(c1, c2);
case gHoroTris: return celldistance3_tri(c1, c2);
case gHoroRec: return celldistance3_rec(c1, c2);
case gHoroHex: return celldistance3_hex(c1, c2);
default: println(hlog, "called celldistance3 for wrong geometry"); return 0;
default:
if(sol || !binarytiling) {
println(hlog, "called celldistance3 for wrong geometry"); return 0;
}
return celldistance3_approx(c1, c2);
}
}