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fixed the bug with partial symmetry apeirogons

This commit is contained in:
Zeno Rogue 2022-04-28 08:39:47 +02:00
parent 84d48789c7
commit a234a76d20
1 changed files with 11 additions and 5 deletions
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16
arbitrile.cpp
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@ -307,9 +307,10 @@ void shape::build_from_angles_edges(bool is_comb) {
hyperpoint v = gpushxto0(ctr) * inf_point;
v /= v[2];
vertices.push_back(v);
auto b = angles.back() / 2;
angles.back() = b;
angles.push_back(0);
angles.push_back(angles[0]/2);
angles[0] /= 2;
angles.push_back(b);
edges.push_back(0);
edges.push_back(0);
}
@ -470,6 +471,11 @@ EX void unmirror(arbi_tiling& c) {
}
}
static void reduce_gcd(int& a, int b) {
int nv = abs(gcd(a, b));
a = abs(gcd(a, b));
}
EX void compute_vertex_valence(arb::arbi_tiling& ac) {
int tcl = -1;
@ -490,14 +496,14 @@ EX void compute_vertex_valence(arb::arbi_tiling& ac) {
println(hlog, "ik = ", tie(i,k), " co=", co, "co1=", co1, " cl=", sh.cycle_length);
throw hr_parse_exception("connection error #2 in compute_vertex_valence");
}
ac.shapes[co.sid].cycle_length = abs(gcd(ac.shapes[co.sid].cycle_length, co.eid - co1.eid));
reduce_gcd(ac.shapes[co.sid].cycle_length, co.eid - co1.eid);
}
for(int k=0; k<n; k++) {
auto co = sh.connections[k];
co = ac.shapes[co.sid].connections[co.eid];
if(co.sid != i) throw hr_parse_exception("connection error in compute_vertex_valence");
sh.cycle_length = abs(gcd(sh.cycle_length, k-co.eid));
reduce_gcd(sh.cycle_length, k-co.eid);
}
if(debugflags & DF_GEOM)
println(hlog, "tile ", i, " cycle_length = ", sh.cycle_length, " / ", n);
@ -550,7 +556,7 @@ EX void compute_vertex_valence(arb::arbi_tiling& ac) {
if(total > 360*degree + 1e-6) throw hr_parse_exception("improper total in compute_stats");
if(at.sid != i) throw hr_parse_exception("ended at wrong type determining vertex_valence");
if((at.eid - k) % ac.shapes[i].cycle_length) {
ac.shapes[i].cycle_length = abs(gcd(ac.shapes[i].cycle_length, at.eid - k));
reduce_gcd(ac.shapes[i].cycle_length, at.eid - k);
goto recompute;
}
sh.vertex_valence[k] = qty;