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Supports - trimming base support layers with the bottom surfaces.

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This commit is contained in:
bubnikv 2017-01-26 12:02:10 +01:00
parent 22124e5f61
commit 0ca230a197
1 changed files with 20 additions and 7 deletions
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27
xs/src/libslic3r/SupportMaterial.cpp
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@ -861,8 +861,9 @@ PrintObjectSupportMaterial::MyLayersPtr PrintObjectSupportMaterial::bottom_conta
// top surfaces above layer.print_z falls onto this top surface. // top surfaces above layer.print_z falls onto this top surface.
// Touching are the contact surfaces supported exclusively by this top surfaces. // Touching are the contact surfaces supported exclusively by this top surfaces.
// Don't use a safety offset as it has been applied during insertion of polygons. // Don't use a safety offset as it has been applied during insertion of polygons.
Polygons touching;
if (! top.empty()) { if (! top.empty()) {
Polygons touching = intersection(top, projection, false); touching = intersection(top, projection, false);
if (! touching.empty()) { if (! touching.empty()) {
// Allocate a new bottom contact layer. // Allocate a new bottom contact layer.
MyLayer &layer_new = layer_allocate(layer_storage, sltBottomContact); MyLayer &layer_new = layer_allocate(layer_storage, sltBottomContact);
@ -887,9 +888,23 @@ PrintObjectSupportMaterial::MyLayersPtr PrintObjectSupportMaterial::bottom_conta
debug_out_path("support-bottom-contacts-%d-%lf.svg", iRun, layer_new.print_z), debug_out_path("support-bottom-contacts-%d-%lf.svg", iRun, layer_new.print_z),
union_ex(layer_new.polygons, false)); union_ex(layer_new.polygons, false));
#endif /* SLIC3R_DEBUG */ #endif /* SLIC3R_DEBUG */
// Trim the already created base layers above the current layer intersecting with the bottom contacts layer.
touching = offset(touching, float(SCALED_EPSILON));
for (int layer_id_above = layer_id + 1; layer_id_above < int(object.total_layer_count()); ++ layer_id_above) {
const Layer &layer_above = *object.layers[layer_id_above];
if (layer_above.print_z > layer_new.print_z + EPSILON)
break;
if (! layer_support_areas[layer_id_above].empty())
layer_support_areas[layer_id_above] = diff(layer_support_areas[layer_id_above], touching);
}
} }
} // ! top.empty() } // ! top.empty()
// Remove the areas that touched from the projection that will continue on next, lower, top surfaces.
// Polygons trimming = union_(to_polygons(layer.slices.expolygons), touching, true);
Polygons trimming = offset(layer.slices.expolygons, float(SCALED_EPSILON));
projection = diff(projection, trimming, false);
remove_sticks(projection); remove_sticks(projection);
remove_degenerate(projection); remove_degenerate(projection);
@ -926,13 +941,11 @@ PrintObjectSupportMaterial::MyLayersPtr PrintObjectSupportMaterial::bottom_conta
// to allow a placement of suppot zig-zag snake along the grid lines. // to allow a placement of suppot zig-zag snake along the grid lines.
layer_support_areas[layer_id] = diff( layer_support_areas[layer_id] = diff(
grid.contours_simplified(m_support_material_flow.scaled_spacing()/2 + 25), grid.contours_simplified(m_support_material_flow.scaled_spacing()/2 + 25),
to_polygons(layer.slices.expolygons), trimming,
true); false);
// Remove the areas that touched from the projection that will continue on next, lower, top surfaces. // Trim the base layer by the object layer.
// projection = diff(projection, touching); projection = diff(projection_simplified, trimming, false);
projection = diff(projection_simplified, to_polygons(layer.slices.expolygons), true);
// layer_support_areas[layer_id] = projection;
} }
std::reverse(bottom_contacts.begin(), bottom_contacts.end()); std::reverse(bottom_contacts.begin(), bottom_contacts.end());
} // ! top_contacts.empty() } // ! top_contacts.empty()