3DPrinting/PrusaSlicer-NonPlainar
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Support generator: Merging of bottom contacts with top contacts and

Browse Source 
interface layers if possible. This should always be possible with
soluble supports and it should have been done long time ago.
For non-soluble supports, it may or may not be possible to merge
these layers: They will only be merged if they are extruded without
bridging and with the same layer height.
Fixes Support enforcer interfaces not generated as needed. #6784
or at least some of the issues reported.

Experimental: Added experimental filtering of propagated support columns
to two extrusions, overlapping by maximum 20%.
This filtering step will remove spurious columns that do not support
anything, but the filtering step may remove supports supporting tiny
islands. Those supports would likely not be printable anyways without
the user intervention (extending the supported area by painting).
This commit is contained in:
Vojtech Bubnik 2021-10-26 12:09:46 +02:00
parent 4d2017188d
commit 28de7f5504
1 changed files with 11 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
src/libslic3r/SupportMaterial.cpp
View File

@ -945,6 +945,8 @@ public:
{ { union_ex(*m_support_polygons) }, { "src", "green", 0.5f } },
});
#endif /* SLIC3R_DEBUG */
//FIXME do we want to trim with the object here? On one side the columns will be thinner, on the other side support interfaces may disappear for snug supports.
// return diff(smooth_outward(closing(*m_support_polygons, closing_distance, SUPPORT_SURFACES_OFFSET_PARAMETERS), smoothing_distance), *m_trimming_polygons);
return smooth_outward(closing(*m_support_polygons, closing_distance, SUPPORT_SURFACES_OFFSET_PARAMETERS), smoothing_distance);
}
assert(false);
@ -2346,7 +2348,9 @@ PrintObjectSupportMaterial::MyLayersPtr PrintObjectSupportMaterial::bottom_conta
Polygons &layer_support_area = layer_support_areas[layer_id];
Polygons *layer_buildplate_covered = buildplate_covered.empty() ? nullptr : &buildplate_covered[layer_id];
task_group.run([&grid_params, &overhangs_projection, &overhangs_projection_raw, &layer, &layer_support_area, layer_buildplate_covered
// Filtering the propagated support columns to two extrusions, overlapping by maximum 20%.
float column_propagation_filtering_radius = scaled<float>(0.8 * 0.5 * (m_support_params.support_material_flow.spacing() + m_support_params.support_material_flow.width()));
task_group.run([&grid_params, &overhangs_projection, &overhangs_projection_raw, &layer, &layer_support_area, layer_buildplate_covered, column_propagation_filtering_radius
#ifdef SLIC3R_DEBUG
, iRun, layer_id
#endif /* SLIC3R_DEBUG */
@ -2357,6 +2361,8 @@ PrintObjectSupportMaterial::MyLayersPtr PrintObjectSupportMaterial::bottom_conta
, iRun, layer_id, "general"
#endif /* SLIC3R_DEBUG */
);
// When propagating support areas downwards, stop propagating the support column if it becomes too thin to be printable.
//overhangs_projection = opening(overhangs_projection, column_propagation_filtering_radius);
});
Polygons layer_support_area_enforcers;
@ -4115,7 +4121,10 @@ void PrintObjectSupportMaterial::generate_toolpaths(
base_layer.merge(std::move(bottom_contact_layer));
else if (base_layer.empty() && ! bottom_contact_layer.empty() && ! bottom_contact_layer.layer->bridging)
base_layer = std::move(bottom_contact_layer);
}
} else if (bottom_contact_layer.could_merge(top_contact_layer))
top_contact_layer.merge(std::move(bottom_contact_layer));
else if (bottom_contact_layer.could_merge(interface_layer))
bottom_contact_layer.merge(std::move(interface_layer));
#if 0
if ( ! interface_layer.empty() && ! base_layer.empty()) {