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Fixed a crash when functions for preprocessing input polygons produced intersecting polygons. It should also fix another crash caused by a missing twin edge in the post-processing Voronoi diagram (probably some issue in Voronoi diagram post-processing, not in Boost Voronoi generator).

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Lukáš Hejl 2022-05-10 13:16:00 +02:00
parent 9896721bc8
commit 2cf6a9630f
1 changed files with 6 additions and 0 deletions
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6
src/libslic3r/Arachne/WallToolPaths.cpp
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@ -486,6 +486,12 @@ const std::vector<VariableWidthLines> &WallToolPaths::generate()
removeDegenerateVerts(prepared_outline);
removeSmallAreas(prepared_outline, small_area_length * small_area_length, false);
// The functions above could produce intersecting polygons that could cause a crash inside Arachne.
// Applying Clipper union should be enough to get rid of this issue.
// Clipper union also fixed an issue in Arachne that in post-processing Voronoi diagram, some edges
// didn't have twin edges (this probably isn't an issue in Boost Voronoi generator).
prepared_outline = union_(prepared_outline);
if (area(prepared_outline) <= 0) {
assert(toolpaths.empty());
return toolpaths;