CrossingSet reverse_tb(CrossingSet const &cr, unsigned split, std::vector<double> max) {
CrossingSet ret;
for(unsigned i = 0; i < cr.size(); i++) {
Crossings res = reverse_tb(cr[i], split, max);
if(i >= split) std::reverse(res.begin(), res.end());
ret.push_back(res);
}
return ret;
}
void mark_crossings(cairo_t* cr, std::vector<Path> &a) {
CrossingSet crs = crossings_among(a);
for(unsigned i = 0; i < crs.size(); i++) {
for(unsigned j = 0; j < crs[i].size(); j++) {
Crossing cur = crs[i][j];
draw_cross(cr, a[i].pointAt(cur.a == i ? cur.ta : cur.tb));
cairo_stroke(cr);
}
}
}
Edges edges(std::vector<Path> const &ps, CrossingSet const &crs) {
Edges ret = Edges();
for(unsigned i = 0; i < crs.size(); i++) {
Edges temp = edges(ps[i], crs[i], i);
append(ret, temp);
}
return ret;
}