mirror of
https://github.com/zenorogue/hyperrogue.git
synced 2024-11-08 23:19:54 +00:00
285 lines
7.3 KiB
C++
285 lines
7.3 KiB
C++
// here the embeddings used in our experiments are implemented
|
|
// Copyright (C) 2011-2022 Tehora and Zeno Rogue, see 'hyper.cpp' for details
|
|
|
|
#include "kohonen.h"
|
|
|
|
namespace rogueviz {
|
|
|
|
namespace embeddings {
|
|
|
|
embedding_type etype = eNatural;
|
|
|
|
/** landscape embedding */
|
|
|
|
map<cell*, kohvec> landscape_at;
|
|
|
|
map<cellwalker, kohvec> delta_at;
|
|
map<cellwalker, int> delta_id;
|
|
|
|
int qdelta;
|
|
|
|
void init_landscape(int dimensions) {
|
|
etype = eLandscape;
|
|
landscape_at.clear();
|
|
delta_at.clear();
|
|
delta_id.clear();
|
|
qdelta = 0;
|
|
landscape_at[currentmap->gamestart()].resize(dimensions, 0);
|
|
println(hlog, "initialized for ", currentmap->gamestart());
|
|
}
|
|
|
|
kohvec& get_landscape_at(cell *h);
|
|
|
|
void init_landscape_det(const vector<cell*>& ac) {
|
|
etype = eLandscape;
|
|
landscape_at.clear();
|
|
delta_at.clear();
|
|
delta_id.clear();
|
|
qdelta = 0;
|
|
landscape_at[currentmap->gamestart()].resize(0, 0);
|
|
for(cell *c: ac) get_landscape_at(c);
|
|
int dimensions = isize(delta_at);
|
|
landscape_at.clear();
|
|
landscape_at[currentmap->gamestart()].resize(dimensions, 0);
|
|
println(hlog, "qdelta = ", qdelta, " size of delta_at = ", isize(delta_at));
|
|
for(auto& d: delta_at) {
|
|
d.second.resize(dimensions, 0);
|
|
// d.second[id++] = 1;
|
|
d.second[delta_id[d.first]] = 1;
|
|
}
|
|
|
|
println(hlog, "initialized for ", currentmap->gamestart(), ", dimensions = ", dimensions);
|
|
}
|
|
|
|
void normalize(cellwalker& cw) {
|
|
int d = celldist(cw.at);
|
|
back:
|
|
if(GDIM == 3) {
|
|
auto& da = currentmap->dirdist(cw.at);
|
|
for(int j=0; j<S7; j++) if(da[j] == 1) {
|
|
cellwalker str = currentmap->strafe(cw, j);
|
|
int d1 = celldist(str.at);
|
|
if(d1 == d+1) continue;
|
|
else if(d1 == d-1) { d = d1; cw = str; goto back; }
|
|
else println(hlog, tie(d, d1));
|
|
}
|
|
}
|
|
else if(S3 == OINF) return;
|
|
else if(S3 == 4) for(int s: {1, -1}) {
|
|
cellwalker str = (cw + s) + wstep + s;
|
|
int d1 = celldist(str.at);
|
|
if(d1 < d) { d = d1; cw = str; goto back; }
|
|
}
|
|
else {
|
|
while(true) {
|
|
cellwalker str = (cw + 1) + wstep + 2;
|
|
int d1 = celldist(str.at);
|
|
if(d1 > d) break;
|
|
d = d1; cw = str;
|
|
}
|
|
while(true) {
|
|
cellwalker str = (cw - 2) + wstep - 1;
|
|
int d1 = celldist(str.at);
|
|
if(d1 > d) break;
|
|
d = d1; cw = str;
|
|
}
|
|
}
|
|
}
|
|
|
|
ld hrandd() {
|
|
return ((hrngen() & HRANDMAX) + .5) / HRANDMAX;
|
|
}
|
|
|
|
ld gaussian_random() {
|
|
ld u1 = hrandd();
|
|
ld u2 = hrandd();
|
|
return sqrt(-2*log(u1)) * cos(TAU*u2);
|
|
}
|
|
|
|
void apply_delta(cellwalker cw, kohvec& v) {
|
|
normalize(cw);
|
|
|
|
auto& da = delta_at[cw];
|
|
if(!delta_id.count(cw)) {
|
|
delta_id[cw] = qdelta++;
|
|
da.resize(isize(v));
|
|
for(int i=0; i<min(200, isize(da)); i++)
|
|
if(i < isize(da)) da[i] = gaussian_random();
|
|
}
|
|
|
|
for(int i=0; i<isize(v); i++) v[i] += da[i];
|
|
}
|
|
|
|
kohvec& get_landscape_at(cell *h) {
|
|
if(landscape_at.count(h)) return landscape_at[h];
|
|
|
|
int hd = celldist(h);
|
|
// if(hd > 2) exit(1);
|
|
for(int i=0; i<h->type; i++) {
|
|
cell *h1 = h->cmove(i);
|
|
auto hd1 = celldist(h1);
|
|
if(hd1 < hd) {
|
|
cellwalker cw(h, i);
|
|
auto& res = landscape_at[h];
|
|
res = get_landscape_at(h1);
|
|
if(S3 == 3) {
|
|
apply_delta(cw, res);
|
|
apply_delta(cw+1, res);
|
|
}
|
|
else
|
|
apply_delta(cw, res);
|
|
break;
|
|
}
|
|
}
|
|
|
|
return landscape_at[h];
|
|
}
|
|
|
|
/** signposts embedding */
|
|
|
|
vector<cell*> signposts;
|
|
|
|
void mark_signposts(bool full, const vector<cell*>& ac) {
|
|
etype = eSignpost;
|
|
println(hlog, "marking signposts");
|
|
signposts.clear();
|
|
int maxd = 0;
|
|
if(!closed_manifold)
|
|
for(cell *c: ac) maxd = max(celldist(c), maxd);
|
|
for(cell *c: ac)
|
|
if(full || c->type != 6)
|
|
if(closed_manifold || celldist(c) == maxd)
|
|
signposts.push_back(c);
|
|
}
|
|
|
|
/** special signposts */
|
|
|
|
void mark_signposts_subg(int a, int b, const vector<cell*>& ac) {
|
|
etype = eSignpost;
|
|
println(hlog, "marking bitrunc signposts");
|
|
signposts.clear();
|
|
int maxd = 0;
|
|
if(!closed_manifold)
|
|
for(cell *c: ac) maxd = max(celldist(c), maxd);
|
|
for(cell *c: ac) {
|
|
auto li = gp::get_local_info(c);
|
|
auto rel = li.relative * gp::loc(a, b);
|
|
auto rel2 = rel * gp::param.conj();
|
|
rel2 = rel2 / (gp::param * gp::param.conj()).first;
|
|
if(rel2 * gp::param == rel)
|
|
signposts.push_back(c);
|
|
}
|
|
}
|
|
|
|
/** rug embedding */
|
|
|
|
map<cell*, hyperpoint> rug_coordinates;
|
|
|
|
void generate_rug(int i, bool close) {
|
|
etype = eHypersian;
|
|
rug::init();
|
|
while(rug::precision_increases < i) rug::physics();
|
|
if(close) rug::close();
|
|
for(auto p: rug::rug_map)
|
|
rug_coordinates[p.first] = p.second->native;
|
|
}
|
|
|
|
/** main function */
|
|
|
|
void get_coordinates(kohvec& v, cell *c, cell *c0) {
|
|
|
|
switch(etype) {
|
|
case eLandscape: {
|
|
v = get_landscape_at(c);
|
|
columns = isize(v);
|
|
break;
|
|
}
|
|
|
|
case eSignpost:
|
|
columns = isize(signposts);
|
|
alloc(v);
|
|
for(int i=0; i<isize(signposts); i++)
|
|
v[i] = celldistance(signposts[i], c);
|
|
break;
|
|
|
|
case eHypersian: {
|
|
columns = 3;
|
|
alloc(v);
|
|
auto h = rug_coordinates.at(c);
|
|
for(int i=0; i<3; i++) v[i] = h[i];
|
|
break;
|
|
}
|
|
|
|
case eNatural: {
|
|
hyperpoint h = calc_relative_matrix(c, c0, C0) * C0;
|
|
|
|
using namespace euc;
|
|
auto& T0 = eu_input.user_axes;
|
|
if(sphere) {
|
|
columns = MDIM;
|
|
alloc(v);
|
|
for(int i=0; i<MDIM; i++)
|
|
v[i] = h[i];
|
|
}
|
|
else if(euclid && closed_manifold && S3 == 3 && WDIM == 2 && T0[0][1] == 0 && T0[1][0] == 0 && T0[0][0] == T0[1][1]) {
|
|
columns = 6;
|
|
alloc(v);
|
|
int s = T0[0][0];
|
|
for(int i=0; i<3; i++) {
|
|
hyperpoint h1 = spin(120._deg*i) * h;
|
|
ld x = h1[1];
|
|
ld alpha = TAU * x / s / (sqrt(3) / 2);
|
|
// println(hlog, kz(x), " -> ", kz(alpha));
|
|
v[2*i] = cos(alpha);
|
|
v[2*i+1] = sin(alpha);
|
|
}
|
|
// println(hlog, kz(h), " -> ", v);
|
|
}
|
|
else if(euclid && closed_manifold && WDIM == 2) {
|
|
columns = 4;
|
|
alloc(v);
|
|
rug::clifford_torus ct;
|
|
h = ct.torus_to_s4(ct.actual_to_torus(h));
|
|
for(int i=0; i<4; i++)
|
|
v[i] = h[i];
|
|
}
|
|
else if(euclid && closed_manifold && WDIM == 3) {
|
|
columns = 6;
|
|
alloc(v);
|
|
using namespace euc;
|
|
auto& T0 = eu_input.user_axes;
|
|
for(int i=0; i<3; i++) {
|
|
int s = T0[i][i];
|
|
ld alpha = TAU * h[i] / s;
|
|
v[2*i] = cos(alpha) * s;
|
|
v[2*i+1] = sin(alpha) * s;
|
|
}
|
|
}
|
|
else if(euclid && !quotient) {
|
|
columns = WDIM;
|
|
alloc(v);
|
|
for(int i=0; i<WDIM; i++)
|
|
v[i] = h[i];
|
|
}
|
|
else {
|
|
println(hlog, "error: unknown geometry to get coordinates from");
|
|
exit(1);
|
|
}
|
|
break;
|
|
}
|
|
|
|
case eProjection: {
|
|
hyperpoint h = calc_relative_matrix(c, c0, C0) * C0;
|
|
hyperpoint res;
|
|
applymodel(shiftless(h), res);
|
|
columns = WDIM;
|
|
if(models::is_3d(pconf)) columns = 3;
|
|
alloc(v);
|
|
for(int i=0; i<columns; i++) v[i] = res[i];
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|
|
}
|