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fix: Address nesting regression in auto arrange after 2.9.0 #15264

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fix: Address nesting regression in auto arrange after 2.9.0 #15264

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5 changes: 1 addition & 4 deletions src/libslic3r/TriangleMeshSlicer.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -2436,10 +2436,7 @@ Polygons project_mesh(
std::vector<Polygons> top, bottom;
std::vector<float> zs { -1e10, 1e10 };
slice_mesh_slabs(mesh, zs, trafo, &top, &bottom, throw_on_cancel);

// We typically perform a union operation on a lot of overlapping polygons, which can be slow in some cases.
// To address this, we use parallel reduction, which can be significantly faster in such cases.
return union_(union_parallel_reduce(top.front()), union_parallel_reduce(bottom.back()));
return union_(top.front(), bottom.back());
}

void cut_mesh(const indexed_triangle_set &mesh, float z, indexed_triangle_set *upper, indexed_triangle_set *lower, bool triangulate_caps)
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