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Use poly2tri for triangulation. This fixes some cases where polyPartition couldn't triangulate successfully. Reported as issue #9 in polyPartition repository. Tested with MotorHalter_0.stl cut at 1.2

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This commit is contained in:
Alessandro Ranellucci
2014-05-01 12:07:11 +02:00
parent 60f640f100
commit edeb0a90dd
19 changed files with 2830 additions and 6 deletions
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25
xs/src/ClipperUtils.cpp
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@@ -467,6 +467,31 @@ void simplify_polygons(const Slic3r::Polygons &subject, Slic3r::Polygons &retval
delete output;
}
void simplify_polygons(const Slic3r::Polygons &subject, Slic3r::ExPolygons &retval, bool preserve_collinear)
{
if (!preserve_collinear) {
Polygons polygons;
simplify_polygons(subject, polygons, preserve_collinear);
union_(polygons, retval);
return;
}
// convert into Clipper polygons
ClipperLib::Paths input_subject;
Slic3rMultiPoints_to_ClipperPaths(subject, input_subject);
ClipperLib::PolyTree polytree;
ClipperLib::Clipper c;
c.PreserveCollinear(true);
c.StrictlySimple(true);
c.AddPaths(input_subject, ClipperLib::ptSubject, true);
c.Execute(ClipperLib::ctUnion, polytree, ClipperLib::pftNonZero, ClipperLib::pftNonZero);
// convert into ExPolygons
PolyTreeToExPolygons(polytree, retval);
}
void safety_offset(ClipperLib::Paths* &subject)
{
// scale input