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Remove self-intersections before supplying polygon data to polyPartition and rename triangulate2() to triangulate_pp()

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This commit is contained in:
Alessandro Ranellucci 2014-05-01 10:37:38 +02:00
parent 9734a40647
commit 60f640f100
7 changed files with 53 additions and 30 deletions
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14
xs/src/ClipperUtils.cpp
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@ -442,14 +442,24 @@ static void traverse_pt(ClipperLib::PolyNodes &nodes, Slic3r::Polygons &retval)
}
}
void simplify_polygons(const Slic3r::Polygons &subject, Slic3r::Polygons &retval)
void simplify_polygons(const Slic3r::Polygons &subject, Slic3r::Polygons &retval, bool preserve_collinear)
{
// convert into Clipper polygons
ClipperLib::Paths* input_subject = new ClipperLib::Paths();
Slic3rMultiPoints_to_ClipperPaths(subject, *input_subject);
ClipperLib::Paths* output = new ClipperLib::Paths();
ClipperLib::SimplifyPolygons(*input_subject, *output, ClipperLib::pftNonZero);
if (preserve_collinear) {
ClipperLib::Clipper c;
c.PreserveCollinear(true);
c.StrictlySimple(true);
c.AddPaths(*input_subject, ClipperLib::ptSubject, true);
c.Execute(ClipperLib::ctUnion, *output, ClipperLib::pftNonZero, ClipperLib::pftNonZero);
} else {
ClipperLib::SimplifyPolygons(*input_subject, *output, ClipperLib::pftNonZero);
}
delete input_subject;
// convert into Slic3r polygons