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Fix of Print::apply() creating hierarchy of regions for complex scenarios:

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Unnecessary regions were created for a modifier over a volume or a modifier,
where the modifier did not modify any of its parent's properties.
This lead to an explosion of regions for this particular 3MF.
Fixes Non Responsive & Memory Leak when opening or changing this 3MF project #7220
This commit is contained in:
Vojtech Bubnik 2021-11-01 13:48:34 +01:00
parent ca677fa1da
commit a0ee41770d
1 changed files with 8 additions and 9 deletions
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9
src/libslic3r/PrintApply.cpp
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@ -857,11 +857,10 @@ static PrintObjectRegions* generate_print_object_regions(
const PrintObjectRegions::BoundingBox *parent_bbox = find_volume_extents(layer_range, *parent_region.model_volume);
assert(parent_bbox != nullptr);
if (parent_bbox->intersects(*bbox))
layer_range.volume_regions.push_back({
&volume, parent_region_id,
get_create_region(region_config_from_model_volume(parent_region.region->config(), nullptr, volume, num_extruders)),
bbox
});
// Only create new region for a modifier, which actually modifies config of it's parent.
if (PrintRegionConfig config = region_config_from_model_volume(parent_region.region->config(), nullptr, volume, num_extruders);
config != parent_region.region->config())
layer_range.volume_regions.push_back({ &volume, parent_region_id, get_create_region(std::move(config)), bbox });
}
}
}