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ENH: add bridge for beamlocking 

jira: NONE

Signed-off-by: xun.zhang <xun.zhang@bambulab.com>
Change-Id: I5126d8e8d327ece7615fdfe536500018dec54b48
This commit is contained in:
xun.zhang 2025-03-19 18:17:25 +08:00 committed by lane.wei
parent 84786cc6a8
commit 6231148ef3
2 changed files with 72 additions and 7 deletions
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1
src/libslic3r/Print.hpp
View File

@ -549,6 +549,7 @@ private:
void detect_surfaces_type();
void process_external_surfaces();
void discover_vertical_shells();
void discover_shell_for_perimeters();
void bridge_over_infill();
void clip_fill_surfaces();
void discover_horizontal_shells();

74
src/libslic3r/PrintObject.cpp
View File

@ -516,6 +516,7 @@ void PrintObject::prepare_infill()
this->discover_vertical_shells();
m_print->throw_if_canceled();
// this will detect bridges and reverse bridges
// and rearrange top/bottom/internal surfaces
// It produces enlarged overlapping bridging areas.
@ -559,6 +560,8 @@ void PrintObject::prepare_infill()
} // for each region
#endif /* SLIC3R_DEBUG_SLICE_PROCESSING */
if (m_config.interlocking_beam.value)
discover_shell_for_perimeters();
// Only active if config->infill_only_where_needed. This step trims the sparse infill,
// so it acts as an internal support. It maintains all other infill types intact.
@ -1890,6 +1893,58 @@ void PrintObject::discover_vertical_shells()
// PROFILE_OUTPUT(debug_out_path("discover_vertical_shells-profile.txt").c_str());
}
void PrintObject::discover_shell_for_perimeters()
{
const size_t num_regions = this->num_printing_regions();
tbb::parallel_for(tbb::blocked_range<size_t>(0, m_layers.size()),
[this,num_regions](const tbb::blocked_range<size_t> &range){
for (size_t idx_layer = range.begin(); idx_layer < range.end(); ++idx_layer) {
Layer* layer = m_layers[idx_layer];
if (!layer->lower_layer)
continue;
Layer* lower_layer = layer->lower_layer;
ExPolygons perimeter_areas;
ExPolygons infill_areas;
float max_line_width = 0;
for (size_t region_id = 0; region_id < num_regions; ++region_id) {
LayerRegion* layerm = layer->m_regions[region_id];
Flow extflow = layerm->flow(frExternalPerimeter);
infill_areas.insert(infill_areas.end(), layerm->fill_expolygons.begin(), layerm->fill_expolygons.end());
max_line_width = std::max(max_line_width, 0.5f * float(extflow.scaled_width() + extflow.scaled_spacing()));
}
infill_areas = union_ex(infill_areas);
perimeter_areas = offset_ex(diff_ex(layer->lslices, infill_areas), max_line_width);
for (size_t region_id = 0; region_id < num_regions; ++region_id) {
LayerRegion* lower_layerm = lower_layer->m_regions[region_id];
ExPolygons new_perimeter_solid = intersection_ex(perimeter_areas, lower_layerm->fill_expolygons);
new_perimeter_solid.erase(std::remove_if(new_perimeter_solid.begin(), new_perimeter_solid.end(), [max_line_width](auto& expoly) {
return is_narrow_expolygon(expoly, 3 * max_line_width);
}), new_perimeter_solid.end());
if (new_perimeter_solid.empty())
continue;
ExPolygons old_internal = to_expolygons(lower_layerm->fill_surfaces.filter_by_type(stInternal));
ExPolygons old_internal_void = to_expolygons(lower_layerm->fill_surfaces.filter_by_type(stInternalVoid));
ExPolygons old_internal_solid = to_expolygons(lower_layerm->fill_surfaces.filter_by_type(stInternalSolid));
lower_layerm->fill_surfaces.remove_types({ stInternal,stInternalVoid,stInternalSolid });
ExPolygons new_internal_solid = union_ex(old_internal_solid, new_perimeter_solid);
ExPolygons new_internal = diff_ex(old_internal, new_perimeter_solid);
ExPolygons new_internal_void = diff_ex(old_internal_void, new_perimeter_solid);
lower_layerm->fill_surfaces.append(new_internal, stInternal);
lower_layerm->fill_surfaces.append(new_internal_void, stInternalVoid);
lower_layerm->fill_surfaces.append(new_internal_solid, stInternalSolid);
}
}
});
}
// This method applies bridge flow to the first internal solid layer above sparse infill.
// This method applies bridge flow to the first internal solid layer above sparse infill.
void PrintObject::bridge_over_infill()
@ -1910,11 +1965,11 @@ void PrintObject::bridge_over_infill()
, region(region)
, bridge_angle(bridge_angle)
{}
const Surface *original_surface;
int layer_index;
Polygons new_polys;
const LayerRegion *region;
double bridge_angle;
const Surface *original_surface; // 下方需要生成桥接的surface
int layer_index; // 下方生成桥接的层号
Polygons new_polys; // 下方需要生成桥接的实心区域
const LayerRegion *region; // 下方需要生成桥接的region，主要提供参数
double bridge_angle; // 桥接方向
};
// 按层存放surface，存放着待桥接的信息
@ -1923,10 +1978,15 @@ void PrintObject::bridge_over_infill()
// SECTION to gather and filter surfaces for expanding, and then cluster them by layer
{
tbb::concurrent_vector<CandidateSurface> candidate_surfaces;
#if USE_TBB_IN_INFILL
tbb::parallel_for(tbb::blocked_range<size_t>(0, this->layers().size()), [po = static_cast<const PrintObject *>(this),
&candidate_surfaces](tbb::blocked_range<size_t> r) {
// 按层并行
for (size_t lidx = r.begin(); lidx < r.end(); lidx++) {
#else
auto po = static_cast<const PrintObject*>(this);
for(size_t lidx =0;lidx<this->layers().size();++lidx){
#endif
const Layer *layer = po->get_layer(lidx);
if (layer->lower_layer == nullptr) {
continue;
@ -1973,6 +2033,7 @@ void PrintObject::bridge_over_infill()
}
}
worth_bridging = intersection(closing(worth_bridging, float(SCALED_EPSILON)), s->expolygon);
// 对应哪个region下的那个surface需要生成桥接
candidate_surfaces.push_back(CandidateSurface(s, lidx, worth_bridging, region, 0));
#ifdef DEBUG_BRIDGE_OVER_INFILL
@ -1990,8 +2051,11 @@ void PrintObject::bridge_over_infill()
}
}
}
#if USE_TBB_IN_INFILL
});
#endif
// 按层重新存储
for (const CandidateSurface &c : candidate_surfaces) {
surfaces_by_layer[c.layer_index].push_back(c);
}