void simplify_polygons(const Slic3r::Polygons &subject, Slic3r::ExPolygons* retval, bool preserve_collinear)
{
PROFILE_FUNC();
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 _clipper(ClipperLib::ClipType clipType, const Slic3r::Polygons &subject,
const Slic3r::Polygons &clip, Slic3r::ExPolygons* retval, bool safety_offset_)
{
// perform operation
ClipperLib::PolyTree polytree;
_clipper_do<ClipperLib::PolyTree>(clipType, subject, clip, &polytree, ClipperLib::pftNonZero, safety_offset_);
// convert into ExPolygons
PolyTreeToExPolygons(polytree, retval);
}
ExPolygons
_clipper_ex(ClipperLib::ClipType clipType, const Polygons &subject,
const Polygons &clip, bool safety_offset_)
{
// perform operation
ClipperLib::PolyTree polytree = _clipper_do<ClipperLib::PolyTree>(clipType, subject, clip, ClipperLib::pftNonZero, safety_offset_);
// convert into ExPolygons
return PolyTreeToExPolygons(polytree);
}
void _clipper(ClipperLib::ClipType clipType, Slic3r::Polygons &subject,
Slic3r::Polygons &clip, Slic3r::ExPolygons &retval, bool safety_offset_)
{
// perform operation
ClipperLib::PolyTree* polytree = new ClipperLib::PolyTree();
_clipper_do<ClipperLib::PolyTree>(clipType, subject, clip, *polytree, ClipperLib::pftNonZero, safety_offset_);
// convert into ExPolygons
PolyTreeToExPolygons(*polytree, retval);
delete polytree;
}
vector<ExPoly> Clipping::getExPolys(const CL::PolyTree &ctree, double z,
double extrusionfactor)
{
ExPolygons cexpolys;
PolyTreeToExPolygons(&ctree, cexpolys);
vector<ExPoly> expolys(cexpolys.size());
for (uint j = 0 ; j < cexpolys.size(); j++) {
expolys[j].outer = getPoly(cexpolys[0].outer, z, extrusionfactor);
for (uint i = 0 ; i < cexpolys[j].holes.size(); i++)
expolys[j].holes.push_back(getPoly(cexpolys[j].holes[i], z, extrusionfactor));
}
return expolys;
}
ExPolygons
ClipperPaths_to_Slic3rExPolygons(const ClipperLib::Paths &input)
{
// init Clipper
ClipperLib::Clipper clipper;
clipper.Clear();
// perform union
clipper.AddPaths(input, ClipperLib::ptSubject, true);
ClipperLib::PolyTree polytree;
clipper.Execute(ClipperLib::ctUnion, polytree, ClipperLib::pftEvenOdd, ClipperLib::pftEvenOdd); // offset results work with both EvenOdd and NonZero
// write to ExPolygons object
return PolyTreeToExPolygons(polytree);
}
void
ClipperPaths_to_Slic3rExPolygons(const ClipperLib::Paths &input, Slic3r::ExPolygons &output)
{
// init Clipper
ClipperLib::Clipper clipper;
clipper.Clear();
// perform union
clipper.AddPaths(input, ClipperLib::ptSubject, true);
ClipperLib::PolyTree* polytree = new ClipperLib::PolyTree();
clipper.Execute(ClipperLib::ctUnion, *polytree, ClipperLib::pftEvenOdd, ClipperLib::pftEvenOdd); // offset results work with both EvenOdd and NonZero
// write to ExPolygons object
output.clear();
PolyTreeToExPolygons(*polytree, output);
delete polytree;
}
ExPolygons simplify_polygons_ex(const Polygons &subject, bool preserve_collinear)
{
if (! preserve_collinear)
return union_ex(simplify_polygons(subject, false));
// convert into Clipper polygons
ClipperLib::Paths input_subject = Slic3rMultiPoints_to_ClipperPaths(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
return PolyTreeToExPolygons(polytree);
}
ExPolygons _clipper_ex(ClipperLib::ClipType clipType, const Polygons &subject, const Polygons &clip, bool safety_offset_)
{
ClipperLib::PolyTree polytree = _clipper_do_polytree2(clipType, subject, clip, ClipperLib::pftNonZero, safety_offset_);
return PolyTreeToExPolygons(polytree);
}
