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Fixed performance issues of PerimeterGenerator with

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extremely detailed chain fabric models, for example
Fabric_of_Thyme_2.0_23x23
This commit is contained in:
Vojtech Bubnik 2022-11-15 18:28:56 +01:00
parent babc8a88a1
commit 1307fbf2f6
1 changed files with 26 additions and 12 deletions
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28
src/libslic3r/PerimeterGenerator.cpp
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@ -282,10 +282,13 @@ static ExtrusionEntityCollection traverse_loops(const PerimeterGenerator::Parame
if (params.config.overhangs && params.layer_id > params.object_config.raft_layers if (params.config.overhangs && params.layer_id > params.object_config.raft_layers
&& ! ((params.object_config.support_material || params.object_config.support_material_enforce_layers > 0) && && ! ((params.object_config.support_material || params.object_config.support_material_enforce_layers > 0) &&
params.object_config.support_material_contact_distance.value == 0)) { params.object_config.support_material_contact_distance.value == 0)) {
BoundingBox bbox(polygon.points);
bbox.offset(SCALED_EPSILON);
Polygons lower_slices_polygons_clipped = ClipperUtils::clip_clipper_polygons_with_subject_bbox(lower_slices_polygons_cache, bbox);
// get non-overhang paths by intersecting this loop with the grown lower slices // get non-overhang paths by intersecting this loop with the grown lower slices
extrusion_paths_append( extrusion_paths_append(
paths, paths,
intersection_pl({ polygon }, lower_slices_polygons_cache), intersection_pl({ polygon }, lower_slices_polygons_clipped),
role, role,
is_external ? params.ext_mm3_per_mm : params.mm3_per_mm, is_external ? params.ext_mm3_per_mm : params.mm3_per_mm,
is_external ? params.ext_perimeter_flow.width() : params.perimeter_flow.width(), is_external ? params.ext_perimeter_flow.width() : params.perimeter_flow.width(),
@ -296,7 +299,7 @@ static ExtrusionEntityCollection traverse_loops(const PerimeterGenerator::Parame
// the loop centerline and original lower slices is >= half nozzle diameter // the loop centerline and original lower slices is >= half nozzle diameter
extrusion_paths_append( extrusion_paths_append(
paths, paths,
diff_pl({ polygon }, lower_slices_polygons_cache), diff_pl({ polygon }, lower_slices_polygons_clipped),
erOverhangPerimeter, erOverhangPerimeter,
params.mm3_per_mm_overhang, params.mm3_per_mm_overhang,
params.overhang_flow.width(), params.overhang_flow.width(),
@ -466,18 +469,29 @@ static ExtrusionEntityCollection traverse_extrusions(const PerimeterGenerator::P
ClipperLib_Z::Path extrusion_path; ClipperLib_Z::Path extrusion_path;
extrusion_path.reserve(extrusion->size()); extrusion_path.reserve(extrusion->size());
for (const Arachne::ExtrusionJunction &ej : extrusion->junctions) BoundingBox extrusion_path_bbox;
for (const Arachne::ExtrusionJunction &ej : extrusion->junctions) {
extrusion_path.emplace_back(ej.p.x(), ej.p.y(), ej.w); extrusion_path.emplace_back(ej.p.x(), ej.p.y(), ej.w);
extrusion_path_bbox.merge(Point{ej.p.x(), ej.p.y()});
}
ClipperLib_Z::Paths lower_slices_paths; ClipperLib_Z::Paths lower_slices_paths;
lower_slices_paths.reserve(lower_slices_polygons_cache.size()); lower_slices_paths.reserve(lower_slices_polygons_cache.size());
{
Points clipped;
extrusion_path_bbox.offset(SCALED_EPSILON);
for (const Polygon &poly : lower_slices_polygons_cache) { for (const Polygon &poly : lower_slices_polygons_cache) {
clipped.clear();
ClipperUtils::clip_clipper_polygon_with_subject_bbox(poly.points, extrusion_path_bbox, clipped);
if (! clipped.empty()) {
lower_slices_paths.emplace_back(); lower_slices_paths.emplace_back();
ClipperLib_Z::Path &out = lower_slices_paths.back(); ClipperLib_Z::Path &out = lower_slices_paths.back();
out.reserve(poly.points.size()); out.reserve(clipped.size());
for (const Point &pt : poly.points) for (const Point &pt : clipped)
out.emplace_back(pt.x(), pt.y(), 0); out.emplace_back(pt.x(), pt.y(), 0);
} }
}
}
// get non-overhang paths by intersecting this loop with the grown lower slices // get non-overhang paths by intersecting this loop with the grown lower slices
extrusion_paths_append(paths, clip_extrusion(extrusion_path, lower_slices_paths, ClipperLib_Z::ctIntersection), role, extrusion_paths_append(paths, clip_extrusion(extrusion_path, lower_slices_paths, ClipperLib_Z::ctIntersection), role,
@ -623,7 +637,7 @@ void PerimeterGenerator::process_arachne(
coord_t solid_infill_spacing = params.solid_infill_flow.scaled_spacing(); coord_t solid_infill_spacing = params.solid_infill_flow.scaled_spacing();
// prepare grown lower layer slices for overhang detection // prepare grown lower layer slices for overhang detection
if (lower_slices != nullptr && params.config.overhangs) { if (params.config.overhangs && lower_slices != nullptr && lower_slices_polygons_cache.empty()) {
// We consider overhang any part where the entire nozzle diameter is not supported by the // We consider overhang any part where the entire nozzle diameter is not supported by the
// lower layer, so we take lower slices and offset them by half the nozzle diameter used // lower layer, so we take lower slices and offset them by half the nozzle diameter used
// in the current layer // in the current layer
@ -863,7 +877,7 @@ void PerimeterGenerator::process_classic(
bool has_gap_fill = params.config.gap_fill_enabled.value && params.config.gap_fill_speed.value > 0; bool has_gap_fill = params.config.gap_fill_enabled.value && params.config.gap_fill_speed.value > 0;
// prepare grown lower layer slices for overhang detection // prepare grown lower layer slices for overhang detection
if (lower_slices != nullptr && params.config.overhangs) { if (params.config.overhangs && lower_slices != nullptr && lower_slices_polygons_cache.empty()) {
// We consider overhang any part where the entire nozzle diameter is not supported by the // We consider overhang any part where the entire nozzle diameter is not supported by the
// lower layer, so we take lower slices and offset them by half the nozzle diameter used // lower layer, so we take lower slices and offset them by half the nozzle diameter used
// in the current layer // in the current layer