static int
max_subdiv_edit_level(Bface_list all, Bface_list core=Bface_list())
{
// what is the deepest subdiv level that is either:
// - controlled by a Bbase
// - has holes cut
// - has new surface regions attached
err_adv(debug, "max_subdiv_edit_level:");
if (all.empty()) {
assert(core.empty());
err_adv(debug, " face list is empty");
return 0;
}
assert(all.mesh() && all.contains_all(core));
int R = 0; // level at which deepest edits happened
int k = 0; // current level being examined
while (!all.empty()) {
k++;
all = get_subdiv_faces(all,1);
if (all.empty())
break;
// check for controllers
if (!Bbase::find_owners(all).empty()) {
err_adv(debug, " controllers at level %d", k);
R = k;
}
// check for holes at this level:
if (all.has_any_secondary()) {
all = all.primary_faces();
err_adv(debug, " hole at level %d", k);
R = k; // holes exist at this level
}
// check for new regions
if (core.empty())
continue;
core = get_subdiv_faces(core,1);
Bface_list new_faces = core.two_ring_faces().primary_faces();
// see if any of these new ones are actually new:
new_faces.set_flags(1);
all.clear_flags();
new_faces = new_faces.filter(SimplexFlagFilter(1));
if (!new_faces.empty()) {
all.append(new_faces);
err_adv(debug, " new faces at level %d", k);
R = k; // new stuff exists at this level
}
}
return R;
}
