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tes;: refactored compute_vertex_valence, also is now able to compute valence in the 'generic' case

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Zeno Rogue 2022-10-08 02:01:25 +02:00
parent 60d0d15dab
commit 5008609b95
1 changed files with 75 additions and 13 deletions
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88
arbitrile.cpp
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@ -545,13 +545,10 @@ EX void mirror_connection(arb::arbi_tiling& ac, connection_t& co) {
}
}
EX void compute_vertex_valence(arb::arbi_tiling& ac) {
EX void compute_vertex_valence_prepare(arb::arbi_tiling& ac) {
int tcl = -1;
for(auto& sh: ac.shapes)
sh.cycle_length = isize(sh.vertices) / sh.repeat_value;
recompute:
while(true) {
for(auto& sh: ac.shapes) {
@ -593,14 +590,10 @@ EX void compute_vertex_valence(arb::arbi_tiling& ac) {
if(new_tcl == tcl) break;
tcl = new_tcl;
}
if(!ac.was_unmirrored) for(auto& sh: ac.shapes) if(sh.symmetric_value) return;
for(auto& sh: ac.shapes) for(auto& co: sh.connections) if(co.mirror) return;
if(cgflags & qAFFINE) return;
if(ac.is_star) return;
ac.have_valence = true;
}
/** returns true if we need to recompute */
EX bool compute_vertex_valence_flat(arb::arbi_tiling& ac) {
for(auto& sh: ac.shapes) {
int n = sh.size();
int i = sh.id;
@ -635,7 +628,7 @@ EX void compute_vertex_valence(arb::arbi_tiling& ac) {
if(at.sid != i) throw hr_parse_exception("ended at wrong type determining vertex_valence");
if((at.eid - k) % ac.shapes[i].cycle_length) {
reduce_gcd(ac.shapes[i].cycle_length, at.eid - k);
goto recompute;
return true;
}
sh.vertex_valence[k] = qty;
sh.vertex_period[k] = pqty;
@ -644,7 +637,76 @@ EX void compute_vertex_valence(arb::arbi_tiling& ac) {
if(debugflags & DF_GEOM)
println(hlog, "computed vertex_valence of ", i, " as ", ac.shapes[i].vertex_valence);
}
return false;
}
/** returns true if we need to recompute */
EX bool compute_vertex_valence_generic(arb::arbi_tiling& ac) {
for(auto& sh: ac.shapes) {
int n = sh.size();
int i = sh.id;
sh.vertex_valence.resize(n);
for(int k=0; k<n; k++) {
connection_t at = {i, k, false};
transmatrix T = Id;
int qty = 0;
do {
if(qty && at.sid == i) {
auto co1 = at;
bool found = find_connection(T, Id, co1);
if(found) {
mirror_connection(ac, co1);
if((co1.eid - k) % ac.shapes[i].cycle_length) {
reduce_gcd(ac.shapes[i].cycle_length, co1.eid - k);
return true;
}
break;
}
}
if(at.mirror) {
if(at.eid == 0) at.eid = isize(ac.shapes[at.sid].angles);
at.eid--;
}
else {
at.eid++;
if(at.eid == isize(ac.shapes[at.sid].angles)) at.eid = 0;
}
auto at0 = at;
at = ac.shapes[at.sid].connections[at.eid];
T = T * get_adj(ac, at0.sid, at0.eid, at.sid, at.eid, at.mirror);
at.mirror ^= at0.mirror;
qty++;
}
while(qty < OINF);
sh.vertex_valence[k] = qty;
}
if(debugflags & DF_GEOM)
println(hlog, "computed vertex_valence of ", i, " as ", ac.shapes[i].vertex_valence);
}
return false;
}
EX void compute_vertex_valence(arb::arbi_tiling& ac) {
for(auto& sh: ac.shapes)
sh.cycle_length = isize(sh.vertices) / sh.repeat_value;
bool generic = false;
if(!ac.was_unmirrored) for(auto& sh: ac.shapes) if(sh.symmetric_value) generic = true;
for(auto& sh: ac.shapes) for(auto& co: sh.connections) if(co.mirror) generic = true;
if(cgflags & qAFFINE) generic = true;
if(ac.is_star) generic = true;
recompute:
compute_vertex_valence_prepare(ac);
if(generic ? compute_vertex_valence_generic(ac) : compute_vertex_valence_flat(ac)) goto recompute;
ac.have_valence = true;
ac.min_valence = UNKNOWN; ac.max_valence = 0;
for(auto& sh: ac.shapes)
for(auto& val: sh.vertex_valence) {