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hat:: hat parameter

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Zeno Rogue
2023-03-24 23:53:13 +01:00
parent 56ca00df82
commit defeaf2cc6
4 changed files with 41 additions and 11 deletions
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38
aperiodic-hat.cpp
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@@ -382,6 +382,8 @@ vector<rule_recursive> rules_recursive = {
{6, 6, 31, 31, 14},
};
EX ld hat_param = 1;
struct hrmap_hat : hrmap {
// always generate the same way
@@ -402,17 +404,18 @@ struct hrmap_hat : hrmap {
void init() {
transmatrix T = Id;
hatcorners[0].clear();
auto& hc = hatcorners[0];
hc.clear();
hatcorners[1].clear();
auto move = [&] (ld angle, ld dist) {
hatcorners[0].push_back(T * C0);
hc.push_back(T * C0);
T = T * spin(angle * degree);
T = T * xpush(dist);
};
ld q = 6;
ld eshort = 0.5;
ld eshort = 0.3;
ld elong = sqrt(3) * eshort;
if(fake::in()) q = fake::around;
@@ -420,6 +423,13 @@ struct hrmap_hat : hrmap {
eshort = edge_of_triangle_with_angles(M_PI / q, 60._deg, 90._deg);
elong = edge_of_triangle_with_angles(60._deg, M_PI / q, 90._deg);
}
else {
eshort *= hat_param;
elong *= 2 - hat_param;
// 0-length edges cause problems...
if(eshort == 0) eshort = .0001;
if(elong == 0) elong = .0001;
}
ld i60 = (M_PI - TAU*2/q)/degree;
ld n60 = (M_PI - TAU*4/q)/degree;
@@ -430,13 +440,22 @@ struct hrmap_hat : hrmap {
move(i60, elong); move(-90, eshort); move( 60, eshort);
move( 90, elong); move(i60, elong);
hyperpoint ctr = Hypc;
for(auto h: hatcorners[0]) ctr += h;
ctr /= isize(hatcorners[0]);
ctr = normalize(ctr);
for(auto& h: hatcorners[0]) h = gpushxto0(ctr) * h;
if(q == 6) {
ld area = 0;
for(int i=0; i<14; i++) area += (hc[(i+1)%14] ^ hc[i]) [2];
println(hlog, "area = ", area);
area = abs(area);
ld scale = sqrt(2.5 / area);
for(auto& h: hc) h = h * scale + (C0) * (1-scale);
}
hatcorners[1] = hatcorners[0];
hyperpoint ctr = Hypc;
for(auto h: hc) ctr += h;
ctr /= isize(hc);
ctr = normalize(ctr);
for(auto& h: hc) h = gpushxto0(ctr) * h;
hatcorners[1] = hc;
for(auto& h: hatcorners[1]) h = MirrorX * h;
reverse(hatcorners[1].begin(), hatcorners[1].end());
}
@@ -608,6 +627,7 @@ EX int get_hat_id(cell *c) {
EX void reshape() {
hrmap_hat *hatmap;
hatmap = FPIU( hat_map() );
if(!hatmap) return;
hatmap->init();
}