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Clipper optimization:

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1) Removed the already commented-out scaling / unscaling when doing
   "safe offsetting"
2) Removed some of the "safe offsetting" at calls where it never was used.
3) Reworked Clipper & ClipperUtils to pass Polygons / ExPolygons / Surfaces
   as input parameters without conversion to ClipperLib::Paths. This
   should save a lot of memory allocation and copying.
4) Reworked conversions from ClipperLib::Paths & PolyTree to Polygons /
   ExPolygons to use the move operator to avoid many unnecessary allocations.
5) Reworked some "union with safe ofsetting" to "offset_ex", which should
   be cheaper.
This commit is contained in:
Vojtech Bubnik 2021-04-30 11:49:57 +02:00
parent b327314b02
commit 9fbba855ef
15 changed files with 616 additions and 722 deletions
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4
src/libslic3r/ExPolygon.hpp
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@ -83,8 +83,8 @@ inline bool operator!=(const ExPolygon &lhs, const ExPolygon &rhs) { return lhs.
inline size_t number_polygons(const ExPolygons &expolys)
{
size_t n_polygons = 0;
for (ExPolygons::const_iterator it = expolys.begin(); it != expolys.end(); ++ it)
n_polygons += it->holes.size() + 1;
for (const ExPolygon &ex : expolys)
n_polygons += ex.holes.size() + 1;
return n_polygons;
}