Updates in the C++ infill code.

xs/src/libslic3r/Fill/Fill3DHoneycomb.hpp

@@ -9,14 +9,21 @@
 
 namespace Slic3r {
 
-class Fill3DHoneycomb : public FillWithDirection
+class Fill3DHoneycomb : public Fill
 {
 public:
     virtual ~Fill3DHoneycomb() {}
-    virtual Polylines fill_surface(const Surface *surface, const FillParams &params);
-	
+
 	// require bridge flow since most of this pattern hangs in air
     virtual bool use_bridge_flow() const { return true; }
+
+protected:
+	virtual void _fill_surface_single(
+	    const FillParams                &params, 
+	    unsigned int                     thickness_layers,
+	    const std::pair<float, Point>   &direction, 
+	    ExPolygon                       &expolygon, 
+	    Polylines                       &polylines_out);
 };
 
 } // namespace Slic3r