Fix bed filling with more existing instances than needed

src/libnest2d/include/libnest2d/nester.hpp

@@ -741,6 +741,10 @@ public:
         return impl_.getResult();
     }
 
+    inline int lastPackedBinId() const {
+        return impl_.lastPackedBinId();
+    }
+
     void clear() { impl_.clear(); }
 };
 
@@ -862,6 +866,10 @@ public:
     {
         return selector_.getResult();
     }
+
+    inline int lastPackedBinId() const {
+        return selector_.lastPackedBinId();
+    }
 };
 
 }

src/libnest2d/include/libnest2d/selections/firstfit.hpp

@@ -71,8 +71,9 @@ public:
         std::sort(store_.begin(), store_.end(), sortfunc);
 
         auto total = last-first;
-        auto makeProgress = [this, &total](Placer& placer, size_t idx) {
-            packed_bins_[idx] = placer.getItems();
+        auto makeProgress = [this, &total](Placer& placer, size_t bin_idx) {
+            packed_bins_[bin_idx] = placer.getItems();
+            this->last_packed_bin_id_ = int(bin_idx);
             this->progress_(static_cast<unsigned>(--total));
         };
 

src/libnest2d/include/libnest2d/selections/selection_boilerplate.hpp

@@ -18,6 +18,8 @@ public:
         return packed_bins_;
     }
 
+    inline int lastPackedBinId() const { return last_packed_bin_id_; }
+
     inline void progressIndicator(ProgressFunction fn) { progress_ = fn; }
 
     inline void stopCondition(StopCondition cond) { stopcond_ = cond; }
@@ -54,6 +56,7 @@ protected:
     PackGroup packed_bins_;
     ProgressFunction progress_ = [](unsigned){};
     StopCondition stopcond_ = [](){ return false; };
+    int last_packed_bin_id_ = -1;
 };
 
 }

src/libslic3r/Arrange.cpp

@@ -309,7 +309,7 @@ protected:
 public:
     AutoArranger(const TBin &                  bin,
                  const ArrangeParams           &params,
-                 std::function<void(unsigned, unsigned /*bins*/)> progressind,
+                 std::function<void(unsigned)> progressind,
                  std::function<bool(void)>     stopcond)
         : m_pck(bin, params.min_obj_distance)
         , m_bin(bin)
@@ -347,10 +347,27 @@ public:
         };
         
         m_pconf.object_function = get_objfn();
+
+        auto on_packed = params.on_packed;
         
-        if (progressind) m_pck.progressIndicator([this, &progressind](unsigned rem) {
-            progressind(rem, m_pck.lastResult().size() - 1);
+        if (progressind || on_packed)
+            m_pck.progressIndicator([this, progressind, on_packed](unsigned rem) {
+
+            if (progressind)
+                progressind(rem);
+
+            if (on_packed) {
+                int last_bed = m_pck.lastPackedBinId();
+                if (last_bed >= 0) {
+                    Item &last_packed = m_pck.lastResult()[last_bed].back();
+                    ArrangePolygon ap;
+                    ap.bed_idx = last_packed.binId();
+                    ap.priority = last_packed.priority();
+                    on_packed(ap);
+                }
+            }
         });
+
         if (stopcond) m_pck.stopCondition(stopcond);
         
         m_pck.configure(m_pconf);
@@ -464,7 +481,7 @@ void _arrange(
         std::vector<Item> &           excludes,
         const BinT &                  bin,
         const ArrangeParams           &params,
-        std::function<void(unsigned, unsigned)> progressfn,
+        std::function<void(unsigned)> progressfn,
         std::function<bool()>         stopfn)
 {
     // Integer ceiling the min distance from the bed perimeters

src/libslic3r/Arrange.hpp

@@ -83,8 +83,9 @@ struct ArrangeParams {
     
     /// Progress indicator callback called when an object gets packed. 
     /// The unsigned argument is the number of items remaining to pack.
-    /// Second is the current bed idx being filled.
-    std::function<void(unsigned, unsigned /*bed_idx*/)> progressind;
+    std::function<void(unsigned)> progressind;
+
+    std::function<void(const ArrangePolygon &)> on_packed;
     
     /// A predicate returning true if abort is needed.
     std::function<bool(void)>     stopcondition;

src/slic3r/GUI/Jobs/ArrangeJob.cpp

@@ -158,14 +158,14 @@ void ArrangeJob::process()
     params.stopcondition = [this]() { return was_canceled(); };
     
     try {
-        params.progressind = [this, count](unsigned st, unsigned) {
+        params.progressind = [this, count](unsigned st) {
             st += m_unprintable.size();
             if (st > 0) update_status(int(count - st), arrangestr);
         };
         
         arrangement::arrange(m_selected, m_unselected, bedpts, params);
         
-        params.progressind = [this, count](unsigned st, unsigned) {
+        params.progressind = [this, count](unsigned st) {
             if (st > 0) update_status(int(count - st), arrangestr);
         };
         

src/slic3r/GUI/Jobs/FillBedJob.cpp

@@ -90,17 +90,20 @@ void FillBedJob::process()
     params.min_obj_distance = scaled(settings.distance);
     params.allow_rotations  = settings.enable_rotation;
 
-    unsigned curr_bed = 0;
-    params.stopcondition = [this, &curr_bed]() {
-        return was_canceled() || curr_bed > 0;
+    bool do_stop = false;
+    params.stopcondition = [this, &do_stop]() {
+        return was_canceled() || do_stop;
     };
 
-    params.progressind = [this, &curr_bed](unsigned st, unsigned bed) {
-        curr_bed = bed;
+    params.progressind = [this](unsigned st) {
         if (st > 0)
             update_status(int(m_status_range - st), _(L("Filling bed")));
     };
 
+    params.on_packed = [&do_stop] (const ArrangePolygon &ap) {
+        do_stop = ap.bed_idx > 0 && ap.priority == 0;
+    };
+
     arrangement::arrange(m_selected, m_unselected, m_bedpts, params);
 
     // finalize just here.
@@ -119,7 +122,7 @@ void FillBedJob::finalize()
     size_t inst_cnt = model_object->instances.size();
 
     for (ArrangePolygon &ap : m_selected) {
-        if (ap.priority != 0 || !(ap.bed_idx == arrangement::UNARRANGED || ap.bed_idx > 0))
+        if (ap.bed_idx != arrangement::UNARRANGED && (ap.priority != 0 || ap.bed_idx == 0))
             ap.apply();
     }