New approach to big items with calculating the best alignment with other big items.

xs/src/libnest2d/libnest2d/geometry_traits.hpp

@@ -314,8 +314,8 @@ inline RawPoint _Box<RawPoint>::center() const BP2D_NOEXCEPT {
     using Coord = TCoord<RawPoint>;
 
     RawPoint ret =  {
-        static_cast<Coord>( (getX(minc) + getX(maxc))/2.0 ),
-        static_cast<Coord>( (getY(minc) + getY(maxc))/2.0 )
+        static_cast<Coord>( std::round((getX(minc) + getX(maxc))/2.0) ),
+        static_cast<Coord>( std::round((getY(minc) + getY(maxc))/2.0) )
     };
 
     return ret;

xs/src/libnest2d/libnest2d/placers/nfpplacer.hpp

@@ -590,7 +590,8 @@ public:
                 [this, &merged_pile](
                             Nfp::Shapes<RawShape>& /*pile*/,
                             const Item& item,
-                            double occupied_area, double norm,
+                            double occupied_area,
+                            double norm,
                             double /*penality*/)
                 {
                     merged_pile.emplace_back(item.transformedShape());