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Ported diff() and intersection()

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This commit is contained in:
Alessandro Ranellucci 2013-07-17 01:21:30 +02:00
parent c7b6818ccf
commit 0efea9e442
4 changed files with 72 additions and 43 deletions
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46
xs/src/ClipperUtils.cpp
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@ -192,8 +192,9 @@ offset2_ex(Slic3r::Polygons &polygons, Slic3r::ExPolygons &retval, const float d
delete output;
}
inline void _clipper_ex(ClipperLib::ClipType clipType, Slic3r::Polygons &subject,
Slic3r::Polygons &clip, Slic3r::ExPolygons &retval, bool safety_offset)
template <class T>
void _clipper_do(ClipperLib::ClipType clipType, Slic3r::Polygons &subject,
Slic3r::Polygons &clip, T &retval, bool safety_offset)
{
// read input
ClipperLib::Polygons* input_subject = new ClipperLib::Polygons();
@ -220,37 +221,60 @@ inline void _clipper_ex(ClipperLib::ClipType clipType, Slic3r::Polygons &subject
clipper.AddPolygons(*input_clip, ClipperLib::ptClip);
delete input_clip;
// perform operation
clipper.Execute(clipType, retval, ClipperLib::pftNonZero, ClipperLib::pftNonZero);
}
void _clipper(ClipperLib::ClipType clipType, Slic3r::Polygons &subject,
Slic3r::Polygons &clip, Slic3r::Polygons &retval, bool safety_offset)
{
// perform operation
ClipperLib::Polygons* output = new ClipperLib::Polygons();
_clipper_do<ClipperLib::Polygons>(clipType, subject, clip, *output, safety_offset);
// convert into Polygons
ClipperPolygons_to_Slic3rPolygons(*output, retval);
delete output;
}
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.Execute(clipType, *polytree, ClipperLib::pftNonZero, ClipperLib::pftNonZero);
_clipper_do<ClipperLib::PolyTree>(clipType, subject, clip, *polytree, safety_offset);
// convert into ExPolygons
PolyTreeToExPolygons(*polytree, retval);
delete polytree;
}
void
diff_ex(Slic3r::Polygons &subject, Slic3r::Polygons &clip, Slic3r::ExPolygons &retval, bool safety_offset)
template <class T>
void diff(Slic3r::Polygons &subject, Slic3r::Polygons &clip, T &retval, bool safety_offset)
{
_clipper_ex(ClipperLib::ctDifference, subject, clip, retval, safety_offset);
_clipper(ClipperLib::ctDifference, subject, clip, retval, safety_offset);
}
template void diff<Slic3r::ExPolygons>(Slic3r::Polygons &subject, Slic3r::Polygons &clip, Slic3r::ExPolygons &retval, bool safety_offset);
template void diff<Slic3r::Polygons>(Slic3r::Polygons &subject, Slic3r::Polygons &clip, Slic3r::Polygons &retval, bool safety_offset);
void intersection_ex(Slic3r::Polygons &subject, Slic3r::Polygons &clip, Slic3r::ExPolygons &retval,
bool safety_offset)
template <class T>
void intersection(Slic3r::Polygons &subject, Slic3r::Polygons &clip, T &retval, bool safety_offset)
{
_clipper_ex(ClipperLib::ctIntersection, subject, clip, retval, safety_offset);
_clipper(ClipperLib::ctIntersection, subject, clip, retval, safety_offset);
}
template void intersection<Slic3r::ExPolygons>(Slic3r::Polygons &subject, Slic3r::Polygons &clip, Slic3r::ExPolygons &retval, bool safety_offset);
template void intersection<Slic3r::Polygons>(Slic3r::Polygons &subject, Slic3r::Polygons &clip, Slic3r::Polygons &retval, bool safety_offset);
void xor_ex(Slic3r::Polygons &subject, Slic3r::Polygons &clip, Slic3r::ExPolygons &retval,
bool safety_offset)
{
_clipper_ex(ClipperLib::ctXor, subject, clip, retval, safety_offset);
_clipper(ClipperLib::ctXor, subject, clip, retval, safety_offset);
}
void union_ex(Slic3r::Polygons &subject, Slic3r::ExPolygons &retval, bool safety_offset)
{
Slic3r::Polygons p;
_clipper_ex(ClipperLib::ctUnion, subject, p, retval, safety_offset);
_clipper(ClipperLib::ctUnion, subject, p, retval, safety_offset);
}
}