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3d:: Great Walls in H3 geometries

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Zeno Rogue
2019-03-10 18:37:09 +01:00
parent 5038686a5b
commit 3f836d1dfe
3 changed files with 117 additions and 7 deletions
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29
reg3.cpp
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@@ -34,6 +34,9 @@ namespace reg3 {
transmatrix spins[12], adjmoves[12];
ld adjcheck, strafedist;
bool dirs_adjacent[16][16];
template<class T> ld binsearch(ld dmin, ld dmax, const T& f) {
for(int i=0; i<200; i++) {
ld d = (dmin + dmax) / 2;
@@ -154,7 +157,18 @@ namespace reg3 {
println(hlog, "center of ", a, " is ", tC0(adjmoves[a]));
println(hlog, "doublemove = ", tC0(adjmoves[0] * adjmoves[0]));
// exit(1);
adjcheck = hdist(tC0(adjmoves[0]), tC0(adjmoves[1])) * 1.0001;
int numedges = 0;
for(int a=0; a<S7; a++) for(int b=0; b<S7; b++) {
dirs_adjacent[a][b] = a != b && hdist(tC0(adjmoves[a]), tC0(adjmoves[b])) < adjcheck;
if(dirs_adjacent[a][b]) numedges++;
}
println(hlog, "numedges = ", numedges);
if(loop == 4) strafedist = adjcheck;
else strafedist = hdist(adjmoves[0] * C0, adjmoves[1] * C0);
}
void binary_rebase(heptagon *h, const transmatrix& V) {
@@ -537,6 +551,19 @@ int dist_alt(cell *c) {
}
#endif
// Construct a cellwalker in direction j from cw.at, such that its direction is as close
// as possible to cw.spin. Assume that j and cw.spin are adjacent
cellwalker strafe(cellwalker cw, int j) {
hyperpoint hfront = tC0(adjmoves[cw.spin]);
transmatrix T = currentmap->relative_matrix(cw.at->cmove(j)->master, cw.at->master);
for(int i=0; i<S7; i++) if(i != cw.at->c.spin(j))
if(hdist(hfront, T * tC0(adjmoves[i])) < strafedist + .01)
return cellwalker(cw.at->move(j), i);
println(hlog, "incorrect strafe");
exit(1);
}
}
}