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ENH: improve the efficiency of grouping volumes during brim generation

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the processes are parallized via tbb
the patch 12311 ENH: remove trim_overlap should be used

Change-Id: I226dc171daadebd81b8d3ae013b08c71b91fb392
(cherry picked from commit eaa2e7997a59f43175d5af430269127471e40cbb)
This commit is contained in:
wintergua 2023-03-15 09:21:20 +08:00 committed by Lane.Wei
parent 96d2882b8d
commit 0b1ccb8708
1 changed files with 25 additions and 12 deletions
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37
src/libslic3r/PrintObjectSlice.cpp
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@ -451,20 +451,33 @@ static std::vector<std::vector<ExPolygons>> slices_to_regions(
bool doesVolumeIntersect(VolumeSlices& vs1, VolumeSlices& vs2)
{
if (vs1.volume_id == vs2.volume_id) return true;
// two volumes in the same object should have same number of layers, otherwise the slicing is incorrect.
if (vs1.slices.size() != vs2.slices.size()) return false;
for (int i = 0; i != vs1.slices.size(); ++i) {
auto& vs1s = vs1.slices;
auto& vs2s = vs2.slices;
bool is_intersect = false;
if (vs1.slices[i].empty()) continue;
if (!vs2.slices[i].empty() && !intersection_ex(vs1.slices[i], vs2.slices[i]).empty()) return true;
if (i + 1 != vs2.slices.size() && !vs2.slices[i + 1].empty()) {
if (!intersection_ex(vs1.slices[i], vs2.slices[i + 1]).empty()) return true;
}
if (i - 1 >= 0 && !vs2.slices[i - 1].empty()) {
if (!intersection_ex(vs1.slices[i], vs2.slices[i - 1]).empty()) return true;
}
}
return false;
tbb::parallel_for(tbb::blocked_range<int>(0, vs1s.size()),
[&vs1s, &vs2s, &is_intersect](const tbb::blocked_range<int>& range) {
for (auto i = range.begin(); i != range.end(); ++i) {
if (vs1s[i].empty()) continue;
if (overlaps(vs1s[i], vs2s[i])) {
is_intersect = true;
break;
}
if (i + 1 != vs2s.size() && overlaps(vs1s[i], vs2s[i + 1])) {
is_intersect = true;
break;
}
if (i - 1 >= 0 && overlaps(vs1s[i], vs2s[i - 1])) {
is_intersect = true;
break;
}
}
});
return is_intersect;
}
//BBS: grouping the volumes of an object according to their connection relationship
@ -744,7 +757,7 @@ void PrintObject::slice()
m_layers = new_layers(this, generate_object_layers(m_slicing_params, layer_height_profile));
this->slice_volumes();
m_print->throw_if_canceled();
#if 0
#if 1
// Fix the model.
//FIXME is this the right place to do? It is done repeateadly at the UI and now here at the backend.
std::string warning = fix_slicing_errors(this, m_layers, [this](){ m_print->throw_if_canceled(); });