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hyperrogue/reg3.cpp
Zeno Rogue c5e979118a reg3 rules:: correct possible_states size
2021-05-23 16:00:49 +02:00

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// Hyperbolic Rogue -- regular honeycombs
// Copyright (C) 2011-2019 Zeno Rogue, see 'hyper.cpp' for details
/** \file reg3.cpp
* \brief regular honeycombs
*
* works with spherical and hyperbolic ones -- Euclidean cubic tiling implemented in euclid.cpp
* includes non-quotient spaces as well as field quotient and elliptic spaces
* hyperbolic honeycombs rely on bt:: to deal with floating point errors (just like archimedean)
*/
#include "hyper.h"
namespace hr {
#if MAXMDIM >= 4
/** \brief regular three-dimensional tessellations */
EX namespace reg3 {
#if HDR
inline short& altdist(heptagon *h) { return h->emeraldval; }
#endif
EX int extra_verification;
EX bool ultra_mirror_on;
EX bool ultra_mirror_in() { return (cgflags & qULTRA) && ultra_mirror_on; }
EX bool in() {
if(fake::in()) return FPIU(in());
return WDIM == 3 && !euclid && !bt::in() && !nonisotropic && !hybri && !kite::in();
}
EX void compute_ultra() {
cgi.ultra_mirror_part = .99;
cgi.ultra_material_part = .99;
cgi.ultra_mirrors.clear();
if(cgflags & qULTRA) {
for(auto& v: cgi.vertices_only) {
hyperpoint nei;
for(int i=0; i<isize(cgi.cellshape); i++)
for(int j=0; j<isize(cgi.cellshape[i]); j++)
if(sqhypot_d(WDIM, cgi.cellshape[i][j]-v) < 1e-6)
nei = cgi.cellshape[i][j?j-1:j+1];
transmatrix T = spintox(v);
hyperpoint a = T * v;
hyperpoint b = T * nei;
ld f0 = 0.5;
ld f1 = binsearch(0.5, 1, [&] (ld d) {
hyperpoint c = lerp(b, a, d);
if(debugflags & DF_GEOM)
println(hlog, "d=", d, " c= ", c, " material = ", material(c));
return material(c) <= 0;
});
cgi.ultra_material_part = f1;
auto f = [&] (ld d) {
hyperpoint c = lerp(b, a, d);
c = normalize(c);
return c[1] * c[1] + c[2] * c[2];
};
for(int it=0; it<100; it++) {
ld fa = (f0*2+f1) / 3;
ld fb = (f0*1+f1*2) / 3;
if(debugflags & DF_GEOM)
println(hlog, "f(", fa, ") = ", f(fa), " f(", fb, ") = ", f(fb));
if(f(fa) > f(fb)) f0 = fa;
else f1 = fb;
}
cgi.ultra_mirror_part = f0;
hyperpoint c = lerp(b, a, f0);
c = normalize(c);
c[1] = c[2] = 0;
c = normalize(c);
cgi.ultra_mirror_dist = hdist0(c);
if(cgi.ultra_mirror_part >= 1-1e-6) continue;
cgi.ultra_mirrors.push_back(rspintox(v) * xpush(cgi.ultra_mirror_dist*2) * MirrorX * spintox(v));
}
}
}
EX void make_vertices_only() {
auto& vertices_only = cgi.vertices_only;
vertices_only.clear();
for(auto& v: cgi.cellshape)
for(hyperpoint h: v) {
bool found = false;
for(hyperpoint h2: vertices_only) if(hdist(h, h2) < 1e-6) found = true;
if(!found) vertices_only.push_back(h);
}
}
EX void generate() {
if(fake::in()) {
fake::generate();
return;
}
int& loop = cgi.loop;
int& face = cgi.face;
auto& spins = cgi.spins;
auto& cellshape = cgi.cellshape;
auto& adjcheck = cgi.adjcheck;
auto& dirs_adjacent = cgi.dirs_adjacent;
int& mid = cgi.schmid;
mid = 3;
face = 3;
if(S7 == 6) face = 4;
if(S7 == 8) mid = 4;
if(S7 == 12) face = 5;
if(S7 == 20) mid = 5;
/* icosahedron not implemented */
loop = ginf[geometry].tiling_name[5] - '0';
DEBB(DF_GEOM, ("face = ", face, " loop = ", loop, " S7 = ", S7));
ld angle_between_faces, hcrossf;
/* frontal face direction */
hyperpoint h0, h1, h2, h3, h012, h013;
if(1) {
dynamicval<eGeometry> dg(geometry, gSphere);
angle_between_faces = edge_of_triangle_with_angles(2*M_PI/mid, M_PI/face, M_PI/face);
h0 = xtangent(1);
h1 = cspin(0, 1, angle_between_faces) * h0;
h2 = cspin(1, 2, 2*M_PI/face) * h1;
h3 = cspin(1, 2, -2*M_PI/face) * h1;
hcrossf = edge_of_triangle_with_angles(M_PI/2, M_PI/mid, M_PI/face);
h012 = cspin(1, 2, M_PI/face) * cspin(0, 1, hcrossf) * h0;
h013 = cspin(1, 2, -M_PI/face) * cspin(0, 1, hcrossf) * h0;
}
for(auto hx: {&h0, &h1, &h2, &h3, &h012, &h013}) (*hx)[3] = 0;
ld klein_scale = binsearch(0, 10, [&] (ld d) {
dynamicval<eGeometry> g(geometry, elliptic ? gCell120 : geometry);
/* center of an edge */
hyperpoint u = C0 + (h012 + h013) * d / 2;
if(material(u) <= 0) {
println(hlog, "klein_scale = ", d, " bad");
return true;
}
u = normalize(u);
hyperpoint h = C0 * face;
for(int i=0; i<face; i++) h += d * (cspin(1, 2, M_PI*2*i/face) * h012);
h = normalize(h);
hyperpoint h2 = rspintox(h) * xpush0(2 * hdist0(h));
h2 = spintox(u) * h2;
u = spintox(u) * u;
h2 = gpushxto0(u) * h2;
u = gpushxto0(u) * u;
ld x = hypot(h2[1], h2[2]);
ld y = h2[0];
ld loop2 = 360 / (90 + atan(y/x) / degree);
println(hlog, "d=", d, " loop2= ", loop2);
if(sphere) return loop2 < loop;
return loop2 > loop;
});
/* precise ideal vertex */
if(klein_scale > 1-1e-5 && klein_scale < 1+1e-5) klein_scale = 1;
/* actual vertex */
hyperpoint v2 = C0 + klein_scale * h012;
hyperpoint midface = Hypc;
for(int i=0; i<face; i++) midface += cspin(1, 2, 2*i*M_PI/face) * v2;
midface = normalize(midface);
ld between_centers = 2 * hdist0(midface);
DEBB(DF_GEOM, ("between_centers = ", between_centers));
if(S7 == 20) {
spins[0] = Id;
spins[1] = cspin(0, 1, angle_between_faces) * cspin(1, 2, M_PI);
spins[2] = spins[1] * cspin(1, 2, -2 * M_PI/face) * spins[1];
spins[3] = spins[1] * cspin(1, 2, +2 * M_PI/face) * spins[1];
for(int a=4; a<10; a++) spins[a] = cspin(1, 2, 2*M_PI/face) * spins[a-3];
for(int a=S7/2; a<S7; a++) spins[a] = spins[a-S7/2] * cspin(0, 1, M_PI);
}
if(S7 == 12 || S7 == 8) {
spins[0] = Id;
spins[1] = cspin(0, 1, angle_between_faces) * cspin(1, 2, M_PI);
for(int a=2; a<face+1; a++) spins[a] = cspin(1, 2, 2*M_PI*(a-1)/face) * spins[1];
for(int a=S7/2; a<S7; a++) spins[a] = cspin(0, 1, M_PI) * spins[a-S7/2];
if(S7 == 8) swap(spins[6], spins[7]);
if(S7 == 12) swap(spins[8], spins[11]);
if(S7 == 12) swap(spins[9], spins[10]);
}
if(S7 == 6) {
spins[0] = Id;
spins[1] = cspin(0, 1, angle_between_faces) * cspin(1, 2, M_PI);
spins[2] = cspin(1, 2, M_PI/2) * spins[1];
for(int a=S7/2; a<S7; a++) spins[a] = spins[a-S7/2] * cspin(0, 1, M_PI);
}
if(S7 == 4) {
spins[0] = Id;
spins[1] = cspin(0, 1, angle_between_faces) * cspin(1, 2, M_PI);
for(int a=2; a<face+1; a++) spins[a] = cspin(1, 2, 2*M_PI*(a-1)/face) * spins[1];
}
cellshape.clear();
cellshape.resize(S7);
for(int a=0; a<S7; a++) {
for(int b=0; b<face; b++)
cellshape[a].push_back(spins[a] * cspin(1, 2, 2*M_PI*b/face) * v2);
}
cgi.adjmoves[0] = cpush(0, between_centers) * cspin(0, 2, M_PI);
for(int i=1; i<S7; i++) cgi.adjmoves[i] = spins[i] * cgi.adjmoves[0];
for(int a=0; a<S7; a++)
DEBB(DF_GEOM, ("center of ", a, " is ", tC0(cgi.adjmoves[a])));
DEBB(DF_GEOM, ("doublemove = ", tC0(cgi.adjmoves[0] * cgi.adjmoves[0])));
adjcheck = hdist(tC0(cgi.adjmoves[0]), tC0(cgi.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(cgi.adjmoves[a]), tC0(cgi.adjmoves[b])) < adjcheck;
if(dirs_adjacent[a][b]) numedges++;
}
DEBB(DF_GEOM, ("numedges = ", numedges));
if(loop == 4) cgi.strafedist = adjcheck;
else cgi.strafedist = hdist(cgi.adjmoves[0] * C0, cgi.adjmoves[1] * C0);
if(stretch::applicable()) {
transmatrix T = cspin(0, 2, 90 * degree);
transmatrix iT = inverse(T);
for(auto& v: cgi.adjmoves) v = T * v * iT;
for(auto& vv: cellshape) for(auto& v: vv) v = T * v;
}
make_vertices_only();
compute_ultra();
for(int a=0; a<S7; a++)
for(int b=0; b<S7; b++)
if(cgi.dirs_adjacent[a][b])
for(int c=0; c<S7; c++)
if(cgi.dirs_adjacent[a][c] && cgi.dirs_adjacent[b][c]) {
transmatrix t = build_matrix(tC0(cgi.adjmoves[a]), tC0(cgi.adjmoves[b]), tC0(cgi.adjmoves[c]), C0);
if(det(t) > 1e-3) cgi.next_dir[a][b] = c;
}
}
void binary_rebase(heptagon *h, const transmatrix& V) {
}
void test();
#if HDR
struct hrmap_quotient3 : hrmap {
vector<heptagon*> allh;
vector<vector<transmatrix>> tmatrices;
vector<cell*> acells;
transmatrix adj(heptagon *h, int d) override { return tmatrices[h->fieldval][d]; }
heptagon *getOrigin() override { return allh[0]; }
transmatrix relative_matrix(heptagon *h2, heptagon *h1, const hyperpoint& hint) override;
void initialize(int cell_count);
vector<cell*>& allcells() override { return acells; }
vector<hyperpoint> get_vertices(cell* c) override { return cgi.vertices_only; }
};
#endif
void hrmap_quotient3::initialize(int cell_count) {
allh.resize(cell_count);
acells.clear();
tmatrices.resize(cell_count);
for(int a=0; a<cell_count; a++) {
allh[a] = tailored_alloc<heptagon> (S7);
allh[a]->c7 = newCell(S7, allh[a]);
allh[a]->fieldval = a;
allh[a]->zebraval = 0;
allh[a]->alt = NULL;
acells.push_back(allh[a]->c7);
}
}
transmatrix hrmap_quotient3::relative_matrix(heptagon *h2, heptagon *h1, const hyperpoint& hint) {
if(h1 == h2) return Id;
int d = hr::celldistance(h2->c7, h1->c7);
for(int a=0; a<S7; a++) if(hr::celldistance(h1->move(a)->c7, h2->c7) < d)
return adj(h1, a) * relative_matrix(h2, h1->move(a), hint);
for(int a=0; a<S7; a++) println(hlog, "d=", d, " vs ", hr::celldistance(h1->move(a)->c7, h2->c7));
println(hlog, "error in hrmap_quotient3:::relative_matrix");
return Id;
}
#if CAP_CRYSTAL
int encode_coord(const crystal::coord& co) {
int c = 0;
for(int i=0; i<4; i++) c |= ((co[i]>>1) & 3) << (2*i);
return c;
}
EX crystal::coord decode_coord(int a) {
crystal::coord co;
for(int i=0; i<4; i++) co[i] = (a & 3) * 2, a >>= 2;
return co;
}
struct hrmap_from_crystal : hrmap_quotient3 {
hrmap_from_crystal() {
initialize(256);
if(1) {
auto m = crystal::new_map();
dynamicval<hrmap*> cm(currentmap, m);
for(int a=0; a<256; a++) {
auto co = decode_coord(a);
heptagon *h1 = get_heptagon_at(co);
for(int d=0; d<8; d++) {
int b = encode_coord(crystal::get_coord(h1->cmove(d)));
allh[a]->c.connect(d, allh[b], h1->c.spin(d), false);
tmatrices[a].push_back(crystal::get_adj(h1, d));
}
}
delete m;
}
}
};
#endif
struct hrmap_field3 : reg3::hrmap_quotient3 {
fieldpattern::fpattern *f;
hrmap_field3(fieldpattern::fpattern *ptr) {
f = ptr;
auto lgr = f->local_group;
int N = isize(f->matrices) / lgr;
initialize(N);
vector<int> moveid(S7), movedir(lgr);
for(int s=0; s<lgr; s++)
for(int i=0; i<S7; i++) if(eqmatrix(f->fullv[s] * cgi.adjmoves[0], cgi.adjmoves[i]))
moveid[i] = s;
for(int s=0; s<lgr; s++)
for(int i=0; i<S7; i++) if(hdist(tC0(inverse(f->fullv[s]) * cgi.adjmoves[0]), tC0(cgi.adjmoves[i])) < 1e-4)
movedir[s] = i;
for(int a=0; a<N; a++) {
tmatrices[a].resize(S7);
for(int b=0; b<S7; b++) {
int k = lgr*a;
k = f->matcode[ f->mmul(f->mmul(f->matrices[k], f->matrices[moveid[b]]), f->P) ];
for(int l=0; l<lgr; l++) if(f->gmul(k, l) % lgr == 0) {
tmatrices[a][b] = cgi.adjmoves[b] * f->fullv[l];
allh[a]->c.connect(b, allh[k/lgr], movedir[l], false);
}
}
}
create_patterns();
}
set<cellwalker> plane;
void make_plane(cellwalker cw) {
if(plane.count(cw)) return;
plane.insert(cw);
for(int i=0; i<S7; i++)
if(cgi.dirs_adjacent[i][cw.spin])
make_plane(reg3::strafe(cw, i));
}
void create_patterns() {
DEBB(DF_GEOM, ("creating pattern = ", isize(allh)));
// also, strafe needs currentmap
dynamicval<hrmap*> c(currentmap, this);
if(S7 == 12) {
// Emerald in 534
cell *a = gamestart();
cell *b = a;
for(cell *c: allcells())
if(bounded_celldistance(a, c) == 5) {
b = c;
break;
}
for(cell *c: allcells())
if(bounded_celldistance(a, c) > bounded_celldistance(b, c))
c->master->zebraval |= 1;
// Vineyard in 534
b = (cellwalker(a, 0) + wstep + rev + wstep).at;
for(cell *c: allcells())
if(bounded_celldistance(a, c) == bounded_celldistance(b, c))
c->master->zebraval |= 2;
}
if(S7 == 6 && ginf[geometry].vertex == 5) {
// Emerald in 534
cell *a = gamestart();
for(cell *c: allcells())
if(bounded_celldistance(a, c) > 3)
c->master->zebraval |= 1;
// Vineyard in 435
make_plane(cellwalker(gamestart(), 0));
DEBB(DF_GEOM, ("plane size = ", isize(plane)));
set<int> plane_indices;
for(auto cw: plane) plane_indices.insert(cw.at->master->fieldval);
int fN = isize(f->matrices);
set<int> nwi;
for(int i=0; i<fN; i++) {
bool ok = true;
for(auto o: plane_indices) {
int j = f->gmul(i, o * f->local_group) / f->local_group;
if(plane_indices.count(j)) ok = false;
forCellEx(c1, allcells()[j]) if(plane_indices.count(c1->master->fieldval)) ok = false;
}
if(ok) nwi.insert(i);
}
int gpow = 0;
for(int i: nwi) {
int pw = 1;
int at = i;
while(true) {
at = f->gmul(at, i);
if(!nwi.count(at)) break;
pw++;
}
if(pw == 4) gpow = i;
}
int u = 0;
for(int a=0; a<5; a++) {
for(int o: plane_indices) {
int j = f->gmul(u, o * f->local_group) / f->local_group;
allcells()[j]->master->zebraval |= 2;
}
u = f->gmul(u, gpow);
}
}
}
};
/** \brief homology cover of the Seifert-Weber space */
namespace seifert_weber {
using crystal::coord;
vector<coord> periods;
int flip(int x) { return (x+6) % 12; }
void build_reps() {
// start_game();
for(int a=0; a<12; a++)
for(int b=0; b<12; b++)
if(cgi.dirs_adjacent[a][b])
for(int c=0; c<12; c++)
if(cgi.dirs_adjacent[a][c] && cgi.dirs_adjacent[b][c]) {
transmatrix t = build_matrix(tC0(cgi.adjmoves[a]), tC0(cgi.adjmoves[b]), tC0(cgi.adjmoves[c]), C0);
if(det(t) > 0) cgi.next_dir[a][b] = c;
}
set<coord> boundaries;
for(int a=0; a<12; a++)
for(int b=0; b<12; b++) if(cgi.dirs_adjacent[a][b]) {
coord res = crystal::c0;
int sa = a, sb = b;
do {
// printf("%d ", sa);
if(sa < 6) res[sa]++; else res[sa-6]--;
sa = flip(sa);
sb = flip(sb);
swap(sa, sb);
sb = cgi.next_dir[sa][sb];
// sb = next_dirsa][sb];
}
while(a != sa || b != sb);
// printf("\n");
if(res > crystal::c0)
boundaries.insert(res);
}
periods.clear();
for(int index = 5; index >= 0; index--) {
for(auto k: boundaries) println(hlog, k);
DEBB(DF_GEOM, ("simplifying..."));
for(auto by: boundaries) if(among(by[index], 1, -1)) {
DEBB(DF_GEOM, ("simplifying by ", by));
periods.push_back(by);
set<coord> nb;
for(auto v: boundaries)
if(v == by) ;
else if(v[index] % by[index] == 0)
nb.insert(v - by * (v[index] / by[index]));
else println(hlog, "error");
boundaries = move(nb);
break;
}
}
}
int get_rep(coord a) {
a = a - periods[0] * (a[5] / periods[0][5]);
a = a - periods[1] * (a[4] / periods[1][4]);
a = a - periods[2] * (a[3] / periods[2][3]);
for(int i=0; i<3; i++) a[i] = gmod(a[i], 5);
return a[2] * 25 + a[1] * 5 + a[0];
}
coord decode(int id) {
coord res = crystal::c0;
for(int a=0; a<3; a++) res[a] = id % 5, id /= 5;
return res;
}
struct hrmap_singlecell : hrmap_quotient3 {
hrmap_singlecell(ld angle) {
initialize(1);
tmatrices[0].resize(S7);
for(int b=0; b<S7; b++) {
allh[0]->c.connect(b, allh[0], (b+S7/2) % S7, false);
transmatrix T = cgi.adjmoves[b];
hyperpoint p = tC0(T);
tmatrices[0][b] = rspintox(p) * xpush(hdist0(p)) * cspin(2, 1, angle) * spintox(p);
}
}
};
struct hrmap_seifert_cover : hrmap_quotient3 {
hrmap_seifert_cover() {
if(periods.empty()) build_reps();
initialize(125);
for(int a=0; a<125; a++) {
tmatrices[a].resize(12);
for(int b=0; b<12; b++) {
coord x = decode(a);
if(b < 6) x[b]++;
else x[b-6]--;
int a1 = get_rep(x);
allh[a]->c.connect(b, allh[a1], flip(b), false);
transmatrix T = cgi.adjmoves[b];
hyperpoint p = tC0(T);
tmatrices[a][b] = rspintox(p) * xpush(hdist0(p)) * cspin(2, 1, 108 * degree) * spintox(p);
}
}
}
};
}
struct hrmap_reg3 : hrmap {
heptagon *origin;
hrmap *binary_map;
hrmap_quotient3 *quotient_map;
map<heptagon*, pair<heptagon*, transmatrix>> reg_gmatrix;
map<heptagon*, vector<pair<heptagon*, transmatrix> > > altmap;
vector<cell*> spherecells;
vector<cell*>& allcells() override {
if(sphere) return spherecells;
return hrmap::allcells();
}
hrmap_reg3() {
origin = tailored_alloc<heptagon> (S7);
heptagon& h = *origin;
h.s = hsOrigin;
h.cdata = NULL;
h.alt = NULL;
h.distance = 0;
h.fiftyval = 0;
h.fieldval = 0;
h.emeraldval = 0;
h.c7 = newCell(S7, origin);
if(sphere) spherecells.push_back(h.c7);
worst_error1 = 0, worst_error2 = 0;
dynamicval<hrmap*> cr(currentmap, this);
heptagon *alt = NULL;
transmatrix T = Id;
binary_map = nullptr;
quotient_map = nullptr;
#if CAP_FIELD
#if CAP_CRYSTAL
if(geometry == gSpace344) {
quotient_map = new hrmap_from_crystal;
}
else
#endif
if(geometry == gSpace535) {
quotient_map = new seifert_weber::hrmap_seifert_cover;
}
else if(hyperbolic) {
quotient_map = new hrmap_field3(&currfp);
}
#endif
h.zebraval = quotient_map ? quotient_map->allh[0]->zebraval : 0;
#if CAP_BT
if(hyperbolic) {
dynamicval<eGeometry> g(geometry, gBinary3);
bt::build_tmatrix();
alt = tailored_alloc<heptagon> (S7);
alt->s = hsOrigin;
alt->emeraldval = 0;
alt->zebraval = 0;
alt->distance = 0;
alt->alt = alt;
alt->cdata = NULL;
alt->c7 = NULL;
binary_map = bt::new_alt_map(alt);
T = xpush(.01241) * spin(1.4117) * xpush(0.1241) * cspin(0, 2, 1.1249) * xpush(0.07) * Id;
}
#endif
reg_gmatrix[origin] = make_pair(alt, T);
altmap[alt].emplace_back(origin, T);
celllister cl(origin->c7, 4, 100000, NULL);
for(cell *c: cl.lst) {
hyperpoint h = tC0(relative_matrix(c->master, origin, C0));
cgi.close_distances[bucketer(h)] = cl.getdist(c);
}
}
ld worst_error1, worst_error2;
heptagon *getOrigin() override {
return origin;
}
void fix_distances(heptagon *h, heptagon *h2) {
vector<heptagon*> to_fix;
auto fix_pair = [&] (heptagon *h, heptagon *h2) {
if(!h2) return;
if(h->distance > h2->distance+1) {
h->distance = h2->distance + 1;
to_fix.push_back(h);
}
else if(h2->distance > h->distance+1) {
h2->distance = h->distance + 1;
to_fix.push_back(h2);
}
if(h->alt && h->alt == h2->alt) {
if(altdist(h) > altdist(h2) + 1) {
altdist(h) = altdist(h2) + 1;
to_fix.push_back(h);
}
else if (altdist(h2) > altdist(h) + 1) {
altdist(h2) = altdist(h) + 1;
to_fix.push_back(h2);
}
}
};
if(!h2) to_fix = {h};
else fix_pair(h, h2);
for(int i=0; i<isize(to_fix); i++) {
h = to_fix[i];
for(int j=0; j<S7; j++) fix_pair(h, h->move(j));
}
}
#define DEB 0
heptagon *counterpart(heptagon *h) {
return quotient_map->allh[h->fieldval];
}
void verify_neighbors(heptagon *alt, int steps, const hyperpoint& hT) {
ld err;
for(auto& p2: altmap[alt]) if((err = intval(tC0(p2.second), hT)) < 1e-3) {
println(hlog, "FAIL");
exit(3);
}
#if CAP_BT
if(steps) {
dynamicval<eGeometry> g(geometry, gBinary3);
dynamicval<hrmap*> cm(currentmap, binary_map);
for(int i=0; i<alt->type; i++)
verify_neighbors(alt->cmove(i), steps-1, currentmap->iadj(alt, i) * hT);
}
#endif
}
heptagon *create_step(heptagon *parent, int d) override {
auto& p1 = reg_gmatrix[parent];
if(DEB) println(hlog, "creating step ", parent, ":", d, ", at ", p1.first, tC0(p1.second));
heptagon *alt = p1.first;
#if CAP_FIELD
transmatrix T = p1.second * (quotient_map ? quotient_map->tmatrices[parent->fieldval][d] : cgi.adjmoves[d]);
#else
transmatrix T = p1.second * cgi.adjmoves[d];
#endif
transmatrix T1 = T;
#if CAP_BT
if(hyperbolic) {
dynamicval<eGeometry> g(geometry, gBinary3);
dynamicval<hrmap*> cm(currentmap, binary_map);
binary_map->virtualRebase(alt, T);
}
#endif
fixmatrix(T);
auto hT = tC0(T);
bool hopf = stretch::applicable();
if(hopf)
T = stretch::translate(hT);
if(DEB) println(hlog, "searching at ", alt, ":", hT);
if(DEB) for(auto& p2: altmap[alt]) println(hlog, "for ", tC0(p2.second), " intval is ", intval(tC0(p2.second), hT));
ld err;
for(auto& p2: altmap[alt]) if((err = intval(tC0(p2.second), hT)) < 1e-3) {
if(err > worst_error1) println(hlog, format("worst_error1 = %lg", double(worst_error1 = err)));
// println(hlog, "YES found in ", isize(altmap[alt]));
if(DEB) println(hlog, "-> found ", p2.first);
int fb = 0;
hyperpoint old = tC0(p1.second);;
if(!hopf) T * (inverse(T1) * old);
#if CAP_FIELD
if(quotient_map) {
p2.first->c.connect(counterpart(parent)->c.spin(d), parent, d, false);
fix_distances(p2.first, parent);
return p2.first;
}
#endif
for(int d2=0; d2<S7; d2++) {
hyperpoint back = p2.second * tC0(cgi.adjmoves[d2]);
if((err = intval(back, old)) < 1e-3) {
if(err > worst_error2) println(hlog, format("worst_error2 = %lg", double(worst_error2 = err)));
if(p2.first->move(d2)) println(hlog, "error: repeated edge");
p2.first->c.connect(d2, parent, d, false);
fix_distances(p2.first, parent);
fb++;
}
}
if(fb != 1) {
println(hlog, "found fb = ", fb);
println(hlog, old);
for(int d2=0; d2<S7; d2++) {
println(hlog, p2.second * tC0(cgi.adjmoves[d2]), " in distance ", intval(p2.second * tC0(cgi.adjmoves[d2]), old));
}
parent->c.connect(d, parent, d, false);
return parent;
}
return p2.first;
}
if(extra_verification) verify_neighbors(alt, extra_verification, hT);
if(DEB) println(hlog, "-> not found");
int d2 = 0, fv = isize(reg_gmatrix);
#if CAP_FIELD
if(quotient_map) {
auto cp = counterpart(parent);
d2 = cp->c.spin(d);
fv = cp->c.move(d)->fieldval;
}
#endif
if(hopf) {
hyperpoint old = tC0(p1.second);
for(d2=0; d2<S7; d2++) {
hyperpoint back = T * tC0(cgi.adjmoves[d2]);
if((err = intval(back, old)) < 1e-3)
break;
}
if(d2 == S7) {
d2 = 0;
println(hlog, "Hopf connection failed");
}
println(hlog, "found d2 = ", d2);
}
heptagon *created = tailored_alloc<heptagon> (S7);
created->c7 = newCell(S7, created);
if(sphere) spherecells.push_back(created->c7);
created->alt = NULL;
created->cdata = NULL;
#if CAP_FIELD
if(quotient_map) {
created->emeraldval = fv;
created->zebraval = quotient_map->allh[fv]->zebraval;
}
else
#endif
created->zebraval = hrand(10);
created->fieldval = fv;
created->distance = parent->distance + 1;
created->fiftyval = 9999;
fixmatrix(T);
reg_gmatrix[created] = make_pair(alt, T);
altmap[alt].emplace_back(created, T);
created->c.connect(d2, parent, d, false);
return created;
}
~hrmap_reg3() {
#if CAP_BT
if(binary_map) {
dynamicval<eGeometry> g(geometry, gBinary3);
delete binary_map;
}
#endif
if(quotient_map) delete quotient_map;
clearfrom(origin);
}
map<heptagon*, int> reducers;
void link_alt(const cellwalker& hs) override {
auto h = hs.at->master;
altdist(h) = 0;
if(h->alt->s != hsOrigin) reducers[h] = hs.spin;
}
void generateAlts(heptagon* h, int levs, bool link_cdata) override {
if(reducers.count(h)) {
heptspin hs(h, reducers[h]);
reducers.erase(h);
hs += wstep;
hs += rev;
altdist(hs.at) = altdist(h) - 1;
hs.at->alt = h->alt;
reducers[hs.at] = hs.spin;
fix_distances(hs.at, NULL);
}
for(int i=0; i<S7; i++) {
auto h2 = h->cmove(i);
if(h2->alt == NULL) {
h2->alt = h->alt;
altdist(h2) = altdist(h) + 1;
fix_distances(h2, NULL);
}
}
}
transmatrix adj(heptagon *h, int d) override {
#if CAP_FIELD
if(quotient_map) return quotient_map->adj(h, d);
else
#endif
return relative_matrix(h->cmove(d), h, C0);
}
transmatrix relative_matrix(heptagon *h2, heptagon *h1, const hyperpoint& hint) override {
auto p1 = reg_gmatrix[h1];
auto p2 = reg_gmatrix[h2];
transmatrix T = Id;
#if CAP_BT
if(hyperbolic) {
dynamicval<eGeometry> g(geometry, gBinary3);
dynamicval<hrmap*> cm(currentmap, binary_map);
T = binary_map->relative_matrix(p2.first, p1.first, hint);
}
#endif
T = inverse(p1.second) * T * p2.second;
if(elliptic && T[LDIM][LDIM] < 0) T = centralsym * T;
return T;
}
vector<hyperpoint> get_vertices(cell* c) override {
return cgi.vertices_only;
}
};
struct hrmap_reg3_rule : hrmap {
heptagon *origin;
reg3::hrmap_quotient3 *quotient_map;
reg3::hrmap_quotient3 *emerald_map;
fieldpattern::fpattern fp;
vector<int> root;
string other;
vector<short> children;
vector<int> otherpos;
void load_ruleset(string fname) {
FILE *f = fopen(fname.c_str(), "rb");
if(!f) f = fopen((rsrcdir + fname).c_str(), "rb");
string buf;
buf.resize(1000000);
int qty = fread(&buf[0], 1, 1000000, f);
buf.resize(qty);
shstream ins(decompress_string(buf));
dynamicval<bool> q(fieldpattern::use_quotient_fp, true);
hread_fpattern(ins, fp);
hread(ins, root);
hread(ins, children);
hread(ins, other);
fclose(f);
}
/** \brief address = (fieldvalue, state) */
typedef pair<int, int> address;
/** nles[x] lists the addresses from which we can reach address x
* without ever ending in the starting point */
map<address, set<address>> nonlooping_earlier_states;
vector<vector<int>> possible_states;
void find_mappings() {
auto &nles = nonlooping_earlier_states;
nles.clear();
vector<address> bfs;
int qty = isize(quotient_map->allh);
if(geometry == gSpace535) qty = 1;
for(int i=0; i<qty; i++)
bfs.emplace_back(i, root[i]);
auto mov = [&] (int fv, int d) {
if(geometry == gSpace535) return 0;
return quotient_map->allh[fv]->move(d)->fieldval;
};
int qstate = isize(children) / S7;
DEBB(DF_GEOM, ("qstate = ", qstate));
for(int i=0; i<isize(bfs); i++) {
address last = bfs[i];
int state = last.second;
int fv = last.first;
for(int d=0; d<S7; d++) {
int nstate = children[state*S7+d];
if(nstate < -1) nstate += (1<<16);
if(nstate >= 0) {
address next = {mov(fv, d), nstate};
if(!nles.count(next)) bfs.push_back(next);
nles[next].insert(last);
}
}
}
vector<int> q(qstate, 0);
for(auto p: bfs) q[p.second]++;
vector<int> q2(isize(quotient_map->allh)+1, 0);
for(auto p: q) q2[p]++;
DEBB(DF_GEOM, ("q2 = ", q2));
bfs = {};
for(int i=0; i<qty; i++)
bfs.emplace_back(i, root[i]);
for(int i=0; i<isize(bfs); i++) {
address last = bfs[i];
int state = last.second;
int fv = last.first;
for(int d=0; d<S7; d++) {
int nstate = children[state*S7+d];
if(nstate < -1) nstate += (1<<16);
if(nstate >= 0) {
address next = {mov(fv, d), nstate};
if(!nles.count(next)) continue;
int c = isize(nles[next]);
nles[next].erase(last);
if(nles[next].empty() && c) {
nles.erase(next);
bfs.push_back(next);
}
}
}
}
DEBB(DF_GEOM, ("removed cases = ", isize(bfs)));
// just the number of FV's
int pstable = 0;
for(auto& p: nonlooping_earlier_states)
pstable = max(pstable, p.first.first+1);
println(hlog, "pstable size = ", pstable, " (states: ", qstate, ")");
possible_states.resize(pstable);
for(auto& p: nonlooping_earlier_states)
possible_states[p.first.first].push_back(p.first.second);
}
hrmap_reg3_rule() : fp(0) {
load_ruleset(get_rule_filename());
origin = tailored_alloc<heptagon> (S7);
heptagon& h = *origin;
h.s = hsOrigin;
h.cdata = NULL;
h.alt = NULL;
h.distance = 0;
h.zebraval = 0;
h.fieldval = 0;
h.fiftyval = root[0];
h.c7 = NULL;
h.c7 = newCell(S7, origin);
int opos = 0;
for(int c: children) {
if(c < -1) c += (1<<16);
if(c >= 0)
otherpos.push_back(-1);
else {
otherpos.push_back(opos);
while(other[opos] != ',') opos++;
opos++;
}
}
quotient_map = nullptr;
if(geometry == gSpace535)
quotient_map = new seifert_weber::hrmap_seifert_cover();
else if(geometry == gSpace344)
quotient_map = new hrmap_from_crystal;
else
quotient_map = new hrmap_field3(&fp);
if(geometry == gSpace535)
emerald_map = new seifert_weber::hrmap_seifert_cover();
else if(geometry == gSpace344)
emerald_map = new hrmap_from_crystal;
else
emerald_map = new hrmap_field3(&currfp);
h.emeraldval = 0;
find_mappings();
}
heptagon *getOrigin() override {
return origin;
}
#define DEB 0
heptagon *counterpart(heptagon *h) {
return quotient_map->allh[h->fieldval];
}
vector<short> evmemo;
void find_emeraldval(heptagon *target, heptagon *parent, int d) {
if(geometry == gSpace535) {
target->emeraldval = target->fieldval;
target->zebraval = 0;
return;
}
generate_cellrotations();
auto& cr = cgi.cellrotations;
if(evmemo.empty()) {
println(hlog, "starting");
map<int, int> matrix_hashtable;
auto matrix_hash = [] (const transmatrix& M) {
return bucketer(M[0][0])
+ bucketer(M[0][1]) * 71
+ bucketer(M[0][2]) * 113
+ bucketer(M[1][0]) * 1301
+ bucketer(M[1][1]) * 1703
+ bucketer(M[1][2]) * 17031
+ bucketer(M[2][2]) * 2307
+ bucketer(M[2][0]) * 2311
+ bucketer(M[2][1]) * 10311;
};
for(int i=0; i<isize(cr); i++) matrix_hashtable[matrix_hash(cr[i].M)] = cr[i].inverse_id;
println(hlog, "ids size = ", isize(matrix_hashtable));
for(int eid=0; eid<isize(emerald_map->allh); eid++)
for(int k0=0; k0<isize(cr); k0++)
for(int fv=0; fv<isize(quotient_map->allh); fv++) {
for(int d=0; d<S7; d++) {
int ed = cr[k0].mapping[d];
auto cpart = emerald_map->allh[eid];
int eid1 = emerald_map->allh[eid]->move(ed)->fieldval;
const transmatrix& X = cr[cr[k0].inverse_id].M;
transmatrix U = quotient_map->iadj(quotient_map->allh[fv], d) * X * emerald_map->adj(cpart, ed);
int k1 = matrix_hashtable[matrix_hash(U)];
/* for(int ik1=0; ik1<isize(cr); ik1++) {
auto& mX1 = cr[ik1].M;
if(eqmatrix(mX1, U)) k1 = cr[ik1].inverse_id;
} */
evmemo.push_back(eid1 * isize(cr) + k1);
}
}
println(hlog, "generated ", isize(evmemo));
}
int memo_id = parent->emeraldval;
memo_id = memo_id * isize(quotient_map->allh) + parent->fieldval;
memo_id = memo_id * S7 + d;
target->emeraldval = evmemo[memo_id];
target->zebraval = emerald_map->allh[target->emeraldval / isize(cr)]->zebraval;
}
heptagon *create_step(heptagon *parent, int d) override {
int id = parent->fiftyval;
if(id < 0) id += (1<<16);
auto cp = counterpart(parent);
int d2 = cp->c.spin(d);
int fv = cp->c.move(d)->fieldval;
// indenter ind(2);
heptagon *res = nullptr;
int id1 = children[S7*id+d];
int pos = otherpos[S7*id+d];
if(id1 < -1) id1 += (1<<16);
if(id1 == -1 && false) {
int kk = pos;
string s;
while(other[kk] != ',') s += other[kk++];
println(hlog, "id=", id, " d=", d, " d2=", d2, " id1=", id1, " pos=", pos, " s = ", s);
}
if(id1 != -1) {
res = tailored_alloc<heptagon> (S7);
if(parent->c7)
res->c7 = newCell(S7, res);
else
res->c7 = nullptr;
res->alt = nullptr;
res->cdata = nullptr;
res->fieldval = fv;
res->distance = parent->distance + 1;
res->fiftyval = id1;
find_emeraldval(res, parent, d);
// res->c.connect(d2, parent, d, false);
}
else if(other[pos] == ('A' + d) && other[pos+1] == ',') {
res = tailored_alloc<heptagon> (S7);
res->c7 = nullptr;
res->alt = parent->alt;
res->cdata = nullptr;
res->fieldval = fv;
res->distance = parent->distance - 1;
vector<int> possible;
int pfv = parent->fieldval;
if(geometry == gSpace535) pfv = 0;
for(auto s: nonlooping_earlier_states[address{pfv, id}]) possible.push_back(s.second);
id1 = hrand_elt(possible, 0);
res->fiftyval = id1;
find_emeraldval(res, parent, d);
}
else {
heptagon *at = parent;
while(other[pos] != ',') {
int dir = (other[pos++] & 31) - 1;
// println(hlog, "from ", at, " go dir ", dir);
at = at->cmove(dir);
}
res = at;
}
if(!res) throw hr_exception("res missing");
if(res->move(d2)) println(hlog, "res conflict");
res->c.connect(d2, parent, d, false);
return res;
}
~hrmap_reg3_rule() {
if(quotient_map) delete quotient_map;
clearfrom(origin);
}
transmatrix adj(heptagon *h, int d) override {
return quotient_map->adj(h, d);
}
transmatrix relative_matrix(heptagon *h2, heptagon *h1, const hyperpoint& hint) override {
return relative_matrix_recursive(h2, h1);
}
vector<hyperpoint> get_vertices(cell* c) override {
return cgi.vertices_only;
}
};
struct hrmap_reg3_rule_alt : hrmap {
heptagon *origin;
hrmap_reg3_rule_alt(heptagon *o) {
origin = o;
}
};
EX hrmap *new_alt_map(heptagon *o) {
return new hrmap_reg3_rule_alt(o);
}
EX void link_structures(heptagon *h, heptagon *alt, hstate firststate) {
auto cm = (hrmap_reg3_rule*) currentmap;
alt->fieldval = h->fieldval;
if(geometry == gSpace535) alt->fieldval = 0;
if(firststate == hsOrigin) {
alt->fiftyval = cm->root[alt->fieldval];
return;
}
vector<int>& choices = cm->possible_states[alt->fieldval];
vector<int> choices2;
for(auto c: choices) {
bool ok = true;
for(int d=0; d<12; d++)
if(h->cmove(d)->distance < h->distance)
if(cm->children[S7*c+d] == -1)
ok = false;
if(ok) choices2.push_back(c);
}
alt->fiftyval = hrand_elt(choices2, -1);
}
EX bool reg3_rule_available = true;
EX string other_rule = "";
EX string get_rule_filename() {
if(other_rule != "") return other_rule;
switch(geometry) {
case gSpace336: return "honeycomb-rules-336.dat";
case gSpace344: return "honeycomb-rules-344.dat";
// case gSpace345: return "honeycomb-rules-345.dat";
case gSpace353: return "honeycomb-rules-353.dat";
case gSpace354: return "honeycomb-rules-354.dat";
// case gSpace355: return "honeycomb-rules-355.dat";
case gSpace435: return "honeycomb-rules-435.dat";
case gSpace436: return "honeycomb-rules-436.dat";
case gSpace534: return "honeycomb-rules-534.dat";
case gSpace535: return "honeycomb-rules-535.dat";
case gSpace536: return "honeycomb-rules-536.dat";
default: return "";
}
}
EX bool in_rule() {
return reg3_rule_available && get_rule_filename() != "";
}
EX int rule_get_root(int i) {
return ((hrmap_reg3_rule*)currentmap)->root[i];
}
EX const vector<short>& rule_get_children() {
return ((hrmap_reg3_rule*)currentmap)->children;
}
EX hrmap* new_map() {
if(geometry == gSeifertCover) return new seifert_weber::hrmap_seifert_cover;
if(geometry == gSeifertWeber) return new seifert_weber::hrmap_singlecell(108*degree);
if(geometry == gHomologySphere) return new seifert_weber::hrmap_singlecell(36*degree);
if(quotient && !sphere) return new hrmap_field3(&currfp);
if(in_rule()) return new hrmap_reg3_rule;
return new hrmap_reg3;
}
hrmap_reg3* regmap() {
return ((hrmap_reg3*) currentmap);
}
EX int quotient_count() {
return isize(regmap()->quotient_map->allh);
}
/** This is a generalization of hyperbolic_celldistance in expansion.cpp to three dimensions.
It still assumes that there are at most 4 cells around every edge, and that distances from
the origin are known, so it works only in {5,3,4}.
*/
int celldistance_534(cell *c1, cell *c2) {
int d1 = celldist(c1);
int d2 = celldist(c2);
vector<cell*> s1 = {c1};
vector<cell*> s2 = {c2};
int best = 99999999;
int d0 = 0;
auto go_nearer = [&] (vector<cell*>& v, int& d) {
vector<cell*> w;
for(cell *c: v)
forCellEx(c1, c)
if(celldist(c1) < d)
w.push_back(c1);
sort(w.begin(), w.end());
d--; d0++;
auto last = std::unique(w.begin(), w.end());
w.erase(last, w.end());
v = w;
};
while(d0 < best) {
for(cell *a1: s1) for(cell *a2: s2) {
if(a1 == a2) best = min(best, d0);
else if(isNeighbor(a1, a2)) best = min(best, d0+1);
}
if(d1 == 0 && d2 == 0) break;
if(d1 >= d2) go_nearer(s1, d1);
if(d1 < d2) go_nearer(s2, d2);
}
return best;
}
EX int celldistance(cell *c1, cell *c2) {
if(c1 == c2) return 0;
if(c1 == currentmap->gamestart()) return c2->master->distance;
if(c2 == currentmap->gamestart()) return c1->master->distance;
if(geometry == gSpace534) return celldistance_534(c1, c2);
auto r = regmap();
hyperpoint h = tC0(r->relative_matrix(c1->master, c2->master, C0));
int b = bucketer(h);
if(cgi.close_distances.count(b)) return cgi.close_distances[b];
if(in_rule())
return clueless_celldistance(c1, c2);
dynamicval<eGeometry> g(geometry, gBinary3);
#if CAP_BT
return 20 + bt::celldistance3(r->reg_gmatrix[c1->master].first, r->reg_gmatrix[c2->master].first);
#else
return 20;
#endif
}
EX bool pseudohept(cell *c) {
auto m = regmap();
if(cgflags & qSINGLE) return true;
if(fake::in()) return FPIU(reg3::pseudohept(c));
if(sphere) {
hyperpoint h = tC0(m->relative_matrix(c->master, regmap()->origin, C0));
if(S7 == 12) {
hyperpoint h1 = cspin(0, 1, atan2(16, 69) + M_PI/4) * h;
for(int i=0; i<4; i++) if(abs(abs(h1[i]) - .5) > .01) return false;
return true;
}
if(S7 == 8)
return h[3] >= .99 || h[3] <= -.99 || abs(h[3]) < .01;
if(cgi.loop == 3 && cgi.face == 3 && S7 == 4)
return c == m->gamestart();
if(cgi.loop == 4 && cgi.face == 3)
return abs(h[3]) > .9;
if(cgi.loop == 3 && cgi.face == 4)
return abs(h[3]) > .9;
if(cgi.loop == 5 && cgi.face == 3)
return abs(h[3]) > .99 || abs(h[0]) > .99 || abs(h[1]) > .99 || abs(h[2]) > .99;
}
// chessboard pattern in 534
if(geometry == gField534)
return hr::celldistance(c, currentmap->gamestart()) & 1;
if(geometry == gCrystal344 || geometry == gCrystal534 || geometry == gSeifertCover)
return false;
if(quotient) return false; /* added */
auto mr = dynamic_cast<hrmap_reg3_rule*> (currentmap);
if(mr) {
if(geometry == gSpace535)
return c->master->fieldval % 31 == 0;
return c->master->fieldval == 0;
}
if(m && hyperbolic) {
heptagon *h = m->reg_gmatrix[c->master].first;
return (h->zebraval == 1) && (h->distance & 1);
}
return false;
}
EX void generate_cellrotations() {
auto &cr = cgi.cellrotations;
if(isize(cr)) return;
for(int a=0; a<S7; a++)
for(int b=0; b<S7; b++)
for(int c=0; c<S7; c++) {
transmatrix T = build_matrix(cgi.adjmoves[a]*C0, cgi.adjmoves[b]*C0, cgi.adjmoves[c]*C0, C0);
if(abs(det(T)) < 0.001) continue;
transmatrix U = build_matrix(cgi.adjmoves[0]*C0, cgi.adjmoves[1]*C0, cgi.adjmoves[2]*C0, C0);
transmatrix S = U * inverse(T);
if(abs(det(S) - 1) > 0.01) continue;
vector<int> perm(S7);
for(int x=0; x<S7; x++) perm[x] = -1;
for(int x=0; x<S7; x++)
for(int y=0; y<S7; y++)
if(hdist(S * cgi.adjmoves[x] * C0, cgi.adjmoves[y] * C0) < .1) perm[x] = y;
bool bad = false;
for(int x=0; x<S7; x++) if(perm[x] == -1) bad = true;
if(bad) continue;
cr.emplace_back(geometry_information::cellrotation_t{S, perm, 0});
}
int rots = isize(cr);
for(int i=0; i<rots; i++)
for(int j=0; j<rots; j++)
if(cr[i].mapping[cr[j].mapping[0]] == 0 && cr[i].mapping[cr[j].mapping[1]] == 1 && cr[i].mapping[cr[j].mapping[2]] == 2)
cr[i].inverse_id = j;
}
#endif
#if 0
/* More precise, but very slow distance. Not used/optimized for now */
ld adistance(cell *c) {
hyperpoint h = tC0(regmap()->reg_gmatrix[c->master].second);
h = bt::deparabolic3(h);
return regmap()->reg_gmatrix[c->master].first->distance * log(2) - h[0];
}
map<pair<cell*, cell*>, int> memo;
bool cdd;
int celldistance(cell *c1, cell *c2) {
if(memo.count(make_pair(c1, c2))) return memo[make_pair(c1, c2)];
if(c1 == c2) return 0;
vector<cell*> v[2];
v[0].push_back(c1);
v[1].push_back(c2);
int steps = 0;
map<cell*, int> visited;
visited[c1] = 1;
visited[c2] = 2;
while(true) {
if(cdd) {
println(hlog, "state ", steps, "/",isize(v[0]), "/", isize(v[1]));
println(hlog, " A: ", v[0]);
println(hlog, " B: ", v[1]);
}
for(int i: {0,1}) {
vector<cell*> new_v;
for(cell *c: v[i]) forCellCM(cn, c) if(adistance(cn) < adistance(c)) {
auto &vi = visited[cn];
if((vi&3) == 0) {
vi = 4 * (steps+1);
vi |= (1<<i);
new_v.push_back(cn);
}
else if((vi&3) == 2-i) {
vector<pair<cell*, int>> ca1, ca2;
int b1 = 4*steps-4;
int b2 = ((vi>>2)<<2) - 4;
for(auto p: visited) {
if(cdd) println(hlog, p);
int ps = p.second & 3;
if(ps == 1+i && p.second >= b1)
ca1.emplace_back(p.first, p.second/4);
if(ps == 2-i && p.second >= b2 && p.second <= b2+8)
ca2.emplace_back(p.first, p.second/4);
}
int bound = 1<<16;
for(auto p1: ca1) for(auto p2: ca2) {
hyperpoint h = tC0(relative_matrix(p1.first->master, p2.first->master));
int b = bucketer(h);
if(close_distances.count(b)) {
int d = close_distances[b] + p1.second + p2.second;
if(cdd) println(hlog, "candidate: close=", close_distances[b], p1, p2, "; h = ", h);
if(d < bound) bound = d;
}
else if(cdd) println(hlog, "bucket missing");
}
return memo[make_pair(c1, c2)] = bound;
return bound;
}
}
v[i] = std::move(new_v);
}
steps++;
}
}
cellwalker target;
int tsteps;
int dist_alt(cell *c) {
if(!target.at) {
target = cellwalker(currentmap->gamestart(), 0);
tsteps = 0;
for(int i=0; i<30; i++) target += wstep, target += rev, tsteps++;
}
if(specialland == laCamelot) return reg3::celldistance(c, target.at);
else {
int d = reg3::celldistance(c, target.at) - tsteps;
if(d < 10) target += wstep, target += rev, tsteps++;
return d;
}
}
#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
#if MAXMDIM >= 4
EX cellwalker strafe(cellwalker cw, int j) {
hyperpoint hfront = tC0(cgi.adjmoves[cw.spin]);
cw.at->cmove(j);
transmatrix T = currentmap->adj(cw.at, j);
for(int i=0; i<S7; i++) if(i != cw.at->c.spin(j))
if(hdist(hfront, T * tC0(cgi.adjmoves[i])) < cgi.strafedist + .01)
return cellwalker(cw.at->cmove(j), i);
println(hlog, "incorrect strafe");
exit(1);
}
EX int matrix_order(const transmatrix A) {
transmatrix T = A;
int res = 1;
while(!eqmatrix(T, Id)) {
res++; T = T * A;
}
return res;
}
EX void generate_fulls() {
reg3::generate_cellrotations();
auto cons = [&] (int i0, int i1, int i2) {
transmatrix T = build_matrix(cgi.adjmoves[ 0]*C0, cgi.adjmoves[ 1]*C0, cgi.adjmoves[ 2]*C0, C0);
transmatrix U = build_matrix(cgi.adjmoves[i0]*C0, cgi.adjmoves[i1]*C0, cgi.adjmoves[i2]*C0, C0);
return U * inverse(T);
};
cgi.full_P = cgi.adjmoves[0];
cgi.full_R = S7 == 8 ? cons(1, 7, 0) : S7 == 20 ? cons(1,2,6) : cons(1, 2, 0);
cgi.full_X = S7 == 8 ? cons(1, 0, 6) : S7 == 6 ? cons(1, 0, 5) : S7 == 20 ? cons(1,0,7) : cons(1, 0, cgi.face);
cgi.xp_order = matrix_order(cgi.full_X * cgi.full_P);
cgi.r_order = matrix_order(cgi.full_R);
cgi.rx_order = matrix_order(cgi.full_R * cgi.full_X);
println(hlog, "orders = ", tie(cgi.rx_order, cgi.r_order, cgi.xp_order));
}
EX void construct_relations() {
auto& rels = cgi.rels;
if(!rels.empty()) return;
rels.clear();
reg3::generate_cellrotations();
reg3::generate_fulls();
vector<transmatrix> all;
vector<string> formulas;
formulas.push_back("");
all.push_back(Id);
hyperpoint v = cgi.cellshape[0][0];
auto add = [&] (transmatrix T) {
for(int i=0; i<isize(all); i++) if(eqmatrix(all[i], T)) return i;
int S = isize(all);
all.push_back(T);
return S;
};
println(hlog, cgi.cellshape);
println(hlog, "cellshape = ", isize(cgi.cellshape));
bool ok = true;
int last_i = -1;
for(auto& v: cgi.cellshape) for(hyperpoint h: v) {
int i = 0, j = 0;
for(auto& uv: cgi.cellshape) for(hyperpoint u: uv) {
if(hdist(h, cgi.full_X*u) < 5e-2) i++;
if(hdist(h, cgi.full_R*u) < 5e-2) j++;
}
if(last_i == -1) last_i = i;
if(i != j || i != last_i) ok = false;
}
if(!ok) { println(hlog, "something wrong"); exit(1); }
add(Id);
auto work = [&] (transmatrix T, int p, char c) {
if(hdist0(tC0(T)) > 5) return;
for(auto& hv: cgi.cellshape) for(hyperpoint h: hv) if(hdist(T * h, v) < 1e-4) goto ok;
return;
ok:
int id = add(T);
// println(hlog, p, " x ", (s0+c), " = ", id);
if(id >= isize(formulas)) formulas.push_back(formulas[p] + c);
else if(id == 0) println(hlog, "reached identity: ", formulas[p]+c);
else if(formulas[p][0] != formulas[id][0])
rels.emplace_back(formulas[p] + c, formulas[id]);
};
for(int i=0; i<isize(all); i++) {
transmatrix T = all[i];
work(T * cgi.full_R, i, 'R');
work(T * cgi.full_X, i, 'X');
work(T * cgi.full_P, i, 'P');
}
}
EX }
#endif
#if MAXMDIM == 3
EX namespace reg3 {
EX bool in() { return false; }
EX bool in_rule() { return false; }
EX }
#endif
}
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