Merged pull request "Gyroid improvements" #2730

by @supermerill and @wavexx

WIP: The function Fill::connect_infill() is being rewritten
to utilize spatial structures wherever possible for lower CPU load
and less dynamic memory allocation.

src/libslic3r/Fill/FillBase.hpp

@@ -111,6 +111,8 @@ protected:
 
     virtual std::pair<float, Point> _infill_direction(const Surface *surface) const;
 
+    void connect_infill(Polylines &&infill_ordered, const ExPolygon &boundary, Polylines &polylines_out, const FillParams &params);
+
 public:
     static coord_t  _adjust_solid_spacing(const coord_t width, const coord_t distance);