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Fix of supports create overkill material that actually sopports nothing above it. #2245

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When expanding the 1st layer support layer, do it by small steps while
trimming with object to avoid supports to leak through object walls.
This commit is contained in:
Vojtech Bubnik 2021-02-24 19:49:38 +01:00
parent 34417574f5
commit 539e80e890
1 changed files with 12 additions and 3 deletions
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15
src/libslic3r/SupportMaterial.cpp
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@ -2643,9 +2643,18 @@ PrintObjectSupportMaterial::MyLayersPtr PrintObjectSupportMaterial::generate_raf
}
} else if (columns_base != nullptr) {
// Expand the bases of the support columns in the 1st layer.
columns_base->polygons = diff(
inflate_factor_1st_layer > 0 ? offset(columns_base->polygons, inflate_factor_1st_layer) : columns_base->polygons,
offset(m_object->layers().front()->lslices, (float)scale_(m_gap_xy), SUPPORT_SURFACES_OFFSET_PARAMETERS));
{
Polygons &raft = columns_base->polygons;
Polygons trimming = offset(m_object->layers().front()->lslices, (float)scale_(m_gap_xy), SUPPORT_SURFACES_OFFSET_PARAMETERS);
if (inflate_factor_1st_layer > SCALED_EPSILON) {
// Inflate in multiple steps to avoid leaking of the support 1st layer through object walls.
auto nsteps = std::max(5, int(ceil(inflate_factor_1st_layer / m_first_layer_flow.scaled_width())));
float step = inflate_factor_1st_layer / nsteps;
for (int i = 0; i < nsteps; ++ i)
raft = diff(offset(raft, step), trimming);
} else
raft = diff(raft, trimming);
}
if (contacts != nullptr)
columns_base->polygons = diff(columns_base->polygons, interface_polygons);
if (! brim.empty()) {