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Make offset_ex(), offset2_ex() and diff_ex() available to C++ code

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This commit is contained in:
Alessandro Ranellucci 2013-07-16 20:36:27 +02:00
parent 79db996696
commit bd3fb21cfd
2 changed files with 92 additions and 69 deletions
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89
xs/src/ClipperUtils.hpp
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@ -96,6 +96,95 @@ scaleClipperPolygons(ClipperLib::Polygons &polygons, const double scale)
}
}
void
offset_ex(Slic3r::Polygons &polygons, Slic3r::ExPolygons &retval, const float delta,
double scale = 100000, ClipperLib::JoinType joinType = ClipperLib::jtMiter,
double miterLimit = 3)
{
// read input
ClipperLib::Polygons* input = new ClipperLib::Polygons();
Slic3rPolygons_to_ClipperPolygons(polygons, *input);
// scale input
scaleClipperPolygons(*input, scale);
// perform offset
ClipperLib::Polygons* output = new ClipperLib::Polygons();
ClipperLib::OffsetPolygons(*input, *output, (delta*scale), joinType, miterLimit);
delete input;
// unscale output
scaleClipperPolygons(*output, 1/scale);
// convert into ExPolygons
ClipperPolygons_to_Slic3rExPolygons(*output, retval);
delete output;
}
void
offset2_ex(Slic3r::Polygons &polygons, Slic3r::ExPolygons &retval, const float delta1,
const float delta2, double scale = 100000, ClipperLib::JoinType joinType = ClipperLib::jtMiter,
double miterLimit = 3)
{
// read input
ClipperLib::Polygons* input = new ClipperLib::Polygons();
Slic3rPolygons_to_ClipperPolygons(polygons, *input);
// scale input
scaleClipperPolygons(*input, scale);
// perform first offset
ClipperLib::Polygons* output1 = new ClipperLib::Polygons();
ClipperLib::OffsetPolygons(*input, *output1, (delta1*scale), joinType, miterLimit);
delete input;
// perform second offset
ClipperLib::Polygons* output2 = new ClipperLib::Polygons();
ClipperLib::OffsetPolygons(*output1, *output2, (delta2*scale), joinType, miterLimit);
delete output1;
// unscale output
scaleClipperPolygons(*output2, 1/scale);
// convert into ExPolygons
ClipperPolygons_to_Slic3rExPolygons(*output2, retval);
delete output2;
}
void
diff_ex(Slic3r::Polygons &subject, Slic3r::Polygons &clip, Slic3r::ExPolygons &retval, bool safety_offset)
{
// read input
ClipperLib::Polygons* input_subject = new ClipperLib::Polygons();
ClipperLib::Polygons* input_clip = new ClipperLib::Polygons();
Slic3rPolygons_to_ClipperPolygons(subject, *input_subject);
Slic3rPolygons_to_ClipperPolygons(clip, *input_clip);
// perform safety offset
if (safety_offset) {
// SafetyOffset(*input_clip);
}
// init Clipper
ClipperLib::Clipper clipper;
clipper.Clear();
// add polygons
clipper.AddPolygons(*input_subject, ClipperLib::ptSubject);
delete input_subject;
clipper.AddPolygons(*input_clip, ClipperLib::ptClip);
delete input_clip;
// perform operation
ClipperLib::PolyTree* polytree = new ClipperLib::PolyTree();
clipper.Execute(ClipperLib::ctDifference, *polytree, ClipperLib::pftNonZero, ClipperLib::pftNonZero);
// convert into ExPolygons
PolyTreeToExPolygons(*polytree, retval);
delete polytree;
}
}