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 simplify_polygons(const Slic3r::Polygons &subject, Slic3r::Polygons* retval, bool preserve_collinear) { // convert into Clipper polygons ClipperLib::Paths input_subject, output; Slic3rMultiPoints_to_ClipperPaths(subject, &input_subject); 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); } // convert into Slic3r polygons ClipperPaths_to_Slic3rMultiPoints(output, retval); }
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); }