PRUSA 2.7.0

src/libslic3r/Arrange/Core/NFP/EdgeCache.cpp

@@ -91,7 +91,7 @@ void fill_distances(const Polygon &poly, std::vector<double> &distances)
 
     double dist = 0.;
     auto lrange = line_range(poly);
-    for (const Line &l : lrange) {
+    for (const Line l : lrange) {
         dist += l.length();
         distances.emplace_back(dist);
     }

src/libslic3r/Arrange/Core/NFP/Kernels/GravityKernel.hpp

@@ -14,7 +14,9 @@ struct GravityKernel {
     std::optional<Vec2crd> item_sink;
     Vec2d active_sink;
 
-    GravityKernel(Vec2crd gravity_center) : sink{gravity_center} {}
+    GravityKernel(Vec2crd gravity_center) :
+        sink{gravity_center}, active_sink{unscaled(gravity_center)} {}
+
     GravityKernel() = default;
 
     template<class ArrItem>

src/libslic3r/Arrange/Core/NFP/Kernels/KernelUtils.hpp

@@ -24,6 +24,7 @@ bool find_initial_position(Itm &itm,
     {
         if (all_items_range(packing_context).empty()) {
             auto rotations = allowed_rotations(itm);
+            set_rotation(itm, 0.);
             auto chull     = envelope_convex_hull(itm);
 
             for (double rot : rotations) {

src/libslic3r/Arrange/Core/NFP/NFP.cpp

@@ -129,7 +129,7 @@ Polygon ifp_convex_convex(const Polygon &fixed, const Polygon &movable)
     // the zero area polygon formed by the edge. The union of all these sub-nfps
     // will contain a hole that is the actual ifp.
     auto lrange = line_range(fixed);
-    for (const Line &l : lrange) { // Older mac compilers generate warnging if line_range is called in-place
+    for (const Line l : lrange) { // Older mac compilers generate warnging if line_range is called in-place
         Polygon fixed = {l.a, l.b};
         subnfps.emplace_back(nfp_convex_convex_legacy(fixed, movable));
     }