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Avoid center plug for internal solid infill (spiral inset) (#15705)

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avoid center plug for internal solid infill
This commit is contained in:
Rodrigo Faselli
2026-10-06 11:41:25 -03:00
committed by GitHub
parent c74ac8a6c3
commit 13d4a0d922
1 changed files with 10 additions and 0 deletions
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src/libslic3r/Fill/FillSpiralInset.cpp
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@@ -352,6 +352,16 @@ void FillSpiralInset::_fill_surface_single(const FillParams& params,
assert(params.use_arachne);
assert(this->print_config != nullptr && this->print_object_config != nullptr);
// Internal solid infill must not add Arachne's standalone thin walls: one of those walls can
// become the extra centre point after the spiral has finished. Top and bottom surfaces keep
// Arachne, including the centre plug handled by generate_spiral_insets().
if (params.extrusion_role == erSolidInfill) {
Polylines polylines;
this->_fill_surface_single(params, thickness_layers, direction, expolygon, polylines);
append(thick_polylines_out, to_thick_polylines(std::move(polylines), scaled<coord_t>(this->spacing)));
return;
}
// Only a solid surface is worth the variable width walls; a sparse one falls back to plain loops.
if (params.density <= 0.9999f || params.dont_adjust) {
Polylines polylines;