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Archimedean precise analyzer

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Zeno Rogue
2019-08-27 18:59:26 +02:00
parent 142566a5bd
commit f6f37b1e45
3 changed files with 39 additions and 7 deletions
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26
archimedean.cpp
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@@ -72,6 +72,8 @@ struct archimedean_tiling {
geometryinfo1& get_geometry();
eGeometryClass get_class() { return get_geometry().kind; }
bool get_step_values(int& steps, int& single_step);
ld scale();
};
@@ -1232,6 +1234,10 @@ EX void show() {
}
else dialog::addBreak(100);
int s, ss;
bool b = current.get_step_values(s, ss);
println(hlog, "b=", b, " s=", s, " ss=",ss);
if(archimedean) {
dialog::addSelItem(XLAT("variations"), gp::operation_name(), 'v');
dialog::add_action(next_variation);
@@ -1301,6 +1307,26 @@ EX bool is_vertex(heptagon *h) {
return id_of(h) >= 2 * current.N;
}
bool archimedean_tiling::get_step_values(int& steps, int& single_step) {
int nom = -2;
int denom = 1;
for(int f: arcm::current.faces) {
if(int(denom*f)/f != denom) { steps = 0; single_step = 0; return false; }
nom = nom * f + (f-2) * denom;
denom = denom * f;
int g = gcd(nom, denom);
nom /= g;
denom /= g;
}
steps = 2 * abs(denom);
single_step = abs(nom);
if(steps/2 != abs(denom)) return false;
return (2 * denom) % nom == 0;
}
EX int valence() {
if(PURE) return arcm::current.N;
if(BITRUNCATED) return 3;