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rulegen:: faster shortcuts

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This commit is contained in:
Zeno Rogue 2021-08-15 17:26:38 +02:00
parent 68949a4ea4
commit 0f0aef8dd9
1 changed files with 51 additions and 41 deletions
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92
rulegen.cpp
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@ -263,14 +263,16 @@ int solid_errors;
int get_parent_dir(tcell *c);
#if HDR
struct shortcut {
vector<int> pre;
vector<int> post;
tcell *sample;
int delta;
};
#endif
map<int, vector<shortcut> > shortcuts;
map<int, vector<unique_ptr<shortcut>> > shortcuts;
vector<int> root_path(twalker cw) {
cw += wstep;
@ -355,18 +357,24 @@ void check_solid(tcell *c, int d) {
int delta = at1.to_spin(walkers2.back().spin);
for(auto s: shortcuts[c->id]) if(s.pre == pre && s.post == post) return;
for(auto& s: shortcuts[c->id]) if(s->pre == pre && s->post == post) return;
if(debugflags & DF_GEOM)
println(hlog, "new shortcut found, pre = ", pre, " post = ", post, " pre reaches ", at1, " post reaches ", walkers2.back(), " of type ", at1.at->id, " sample = ", c);
shortcuts[c->id].emplace_back(shortcut{pre, post, c, delta});
shortcuts[c->id].emplace_back(unique_ptr<shortcut> (new shortcut));
auto& sh = shortcuts[c->id].back();
sh->pre = pre;
sh->post = post;
sh->sample = c;
sh->delta = delta;
auto& sh1 = *sh;
if(debugflags & DF_GEOM) println(hlog, "exhaustive search:");
indenter ind(2);
tcell* c1 = first_tcell;
while(c1) {
if(c1->id == c->id) look_for_shortcuts(c1);
if(c1->id == c->id) look_for_shortcuts(c1, sh1);
c1 = c1->next;
}
}
@ -444,53 +452,55 @@ void be_solid(tcell *c) {
c->is_solid = true;
}
EX void look_for_shortcuts(tcell *c) {
if(c->dist > 0) for(int i=0; i<isize(shortcuts[c->id]); i++) {
auto sh = shortcuts[c->id][i];
if(1) {
twalker tw0(c, 0);
twalker tw(c, 0);
ufind(tw);
ufind(tw0);
EX void look_for_shortcuts(tcell *c, shortcut& sh) {
if(c->dist <= 0) return;
if(1) {
twalker tw0(c, 0);
twalker tw(c, 0);
ufind(tw);
ufind(tw0);
vector<tcell*> opath;
vector<tcell*> opath;
for(auto& v: sh.pre) {
opath.push_back(tw.at);
tw += v;
if(!tw.peek()) goto next_shortcut;
if(tw.peek()->dist != tw.at->dist-1) goto next_shortcut;
ufind(tw);
tw += wstep;
}
for(auto& v: sh.pre) {
opath.push_back(tw.at);
tw += v;
if(!tw.peek()) return;
if(tw.peek()->dist != tw.at->dist-1) return;
ufind(tw);
tw += wstep;
}
opath.push_back(tw.at);
ufind(tw0);
vector<tcell*> npath;
for(auto& v: sh.post) {
npath.push_back(tw0.at);
tw0 += v;
ufind(tw0);
tw0 += wstep;
calc_distances(tw0.at);
}
ufind(tw0);
vector<tcell*> npath;
for(auto& v: sh.post) {
npath.push_back(tw0.at);
int d = sh.delta;
auto tw1 = tw + d;
fix_queue.push([=] { unify(tw1, tw0); });
process_fix_queue();
for(auto t: npath) {
ufindc(t);
fix_distances(t);
}
ufindc(c);
tw0 += v;
ufind(tw0);
tw0 += wstep;
calc_distances(tw0.at);
}
npath.push_back(tw0.at);
int d = sh.delta;
auto tw1 = tw + d;
fix_queue.push([=] { unify(tw1, tw0); });
process_fix_queue();
for(auto t: npath) {
ufindc(t);
fix_distances(t);
}
next_shortcut: ;
ufindc(c);
}
}
EX void look_for_shortcuts(tcell *c) {
if(c->dist > 0)
for(int i=0; i<isize(shortcuts[c->id]); i++)
look_for_shortcuts(c, *shortcuts[c->id][i]);
}
/** which neighbor will become the parent of c */
int get_parent_dir(tcell *c) {