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ENH: speed up the wall generator process by using bounding box

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Signed-off-by: qing.zhang <qing.zhang@bambulab.com>
Change-Id: Ifccbb33bc6df28136746f98020ef2cad002b5868
This commit is contained in:
qing.zhang 2023-03-06 15:13:36 +08:00 • committed by Lane.Wei
parent aba824bbb9
commit fdd659cefe
3 changed files with 122 additions and 11 deletions
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21
src/libslic3r/PerimeterGenerator.cpp
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@ -268,6 +268,10 @@ static ExtrusionEntityCollection traverse_loops(const PerimeterGenerator &perime
}
if (perimeter_generator.config->detect_overhang_wall && perimeter_generator.layer_id > perimeter_generator.object_config->raft_layers) {
// get non 100% overhang paths by intersecting this loop with the grown lower slices
// prepare grown lower layer slices for overhang detection
BoundingBox bbox(polygon.points);
bbox.offset(SCALED_EPSILON);
Polylines remain_polines;
//BBS: don't calculate overhang degree when enable fuzzy skin. It's unmeaning
@ -275,10 +279,10 @@ static ExtrusionEntityCollection traverse_loops(const PerimeterGenerator &perime
for (auto it = lower_polygons_series->begin();
it != lower_polygons_series->end(); it++)
{
Polygons lower_polygons_series_clipped = ClipperUtils::clip_clipper_polygons_with_subject_bbox(it->second, bbox);
Polylines inside_polines = (it == lower_polygons_series->begin()) ?
intersection_pl({ polygon }, it->second) :
intersection_pl(remain_polines, it->second);
Polylines inside_polines = (it == lower_polygons_series->begin()) ? intersection_pl({polygon}, lower_polygons_series_clipped) :
intersection_pl(remain_polines, lower_polygons_series_clipped);
extrusion_paths_append(
paths,
std::move(inside_polines),
@ -289,9 +293,8 @@ static ExtrusionEntityCollection traverse_loops(const PerimeterGenerator &perime
extrusion_width,
(float)perimeter_generator.layer_height);
remain_polines = (it == lower_polygons_series->begin()) ?
diff_pl({ polygon }, it->second) :
diff_pl(remain_polines, it->second);
remain_polines = (it == lower_polygons_series->begin()) ? diff_pl({polygon}, lower_polygons_series_clipped) :
diff_pl(remain_polines, lower_polygons_series_clipped);
if (remain_polines.size() == 0)
break;
@ -299,7 +302,9 @@ static ExtrusionEntityCollection traverse_loops(const PerimeterGenerator &perime
} else {
auto it = lower_polygons_series->end();
it--;
Polylines inside_polines = intersection_pl({ polygon }, it->second);
Polygons lower_polygons_series_clipped = ClipperUtils::clip_clipper_polygons_with_subject_bbox(it->second, bbox);
Polylines inside_polines = intersection_pl({polygon}, lower_polygons_series_clipped);
extrusion_paths_append(
paths,
std::move(inside_polines),
@ -310,7 +315,7 @@ static ExtrusionEntityCollection traverse_loops(const PerimeterGenerator &perime
extrusion_width,
(float)perimeter_generator.layer_height);
remain_polines = diff_pl({ polygon }, it->second);
remain_polines = diff_pl({polygon}, lower_polygons_series_clipped);
}
// get 100% overhang paths by checking what parts of this loop fall