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Fix of Unnecessary raft on models with large perimeter but nothing inside. #430

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Don't fill in the holes in 1st layer of the raft.
The user may apply a higher raft_expansion if one wants a better 1st layer adhesion.
This commit is contained in:
Vojtech Bubnik 2021-02-24 18:08:32 +01:00
parent 6bdd42b1cf
commit e9875f57a9
1 changed files with 6 additions and 1 deletions
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7
src/libslic3r/SupportMaterial.cpp
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@ -1371,8 +1371,13 @@ PrintObjectSupportMaterial::MyLayersPtr PrintObjectSupportMaterial::top_contact_
if (layer_id == 0) { if (layer_id == 0) {
// This is the first object layer, so the object is being printed on a raft and // This is the first object layer, so the object is being printed on a raft and
// we're here just to get the object footprint for the raft. // we're here just to get the object footprint for the raft.
// We only consider contours and discard holes to get a more continuous raft. #if 0
// The following line was filling excessive holes in the raft, see GH #430
overhang_polygons = collect_slices_outer(layer); overhang_polygons = collect_slices_outer(layer);
#else
// Don't fill in the holes. The user may apply a higher raft_expansion if one wants a better 1st layer adhesion.
overhang_polygons = to_polygons(layer.lslices);
#endif
// Expand for better stability. // Expand for better stability.
contact_polygons = offset(overhang_polygons, scaled<float>(m_object_config->raft_expansion.value)); contact_polygons = offset(overhang_polygons, scaled<float>(m_object_config->raft_expansion.value));
} else { } else {