ENH: allow big obj arrange into bed with calibration region

Change-Id: I4dac878e0c5ec75a4b06dd5803c0a4839f312bfe
(cherry picked from commit b216a5f4ae97b29eb5ba0c2b5de3b12da80f374d)

src/libnest2d/include/libnest2d/nester.hpp

@@ -84,6 +84,7 @@ public:
     //BBS: virtual object to mark unprintable region on heatbed
     bool is_virt_object{ false };
     bool is_wipe_tower{ false };
+    bool has_tried_with_excluded{ false };
 
     /// The type of the shape which was handed over as the template argument.
     using ShapeType = RawShape;
@@ -662,9 +663,21 @@ public:
     /// Get the packed items.
     inline ItemGroup getItems() { return impl_.getItems(); }
 
+    inline int getPackedSize()
+    {
+        int  size  = 0;
+        auto items = getItems();
+        for (const auto &itm : items) {
+            if (itm.get().isFixed() == false) { size++; }
+        }
+        return size;
+    }
+
     /// Clear the packed items so a new session can be started.
     inline void clearItems() { impl_.clearItems(); }
 
+    inline void clearItems(const std::function<bool(const Item &itm)> &func) { impl_.clearItems(func); }
+
     inline double filledArea() const { return impl_.filledArea(); }
 
     inline double score() const { return impl_.score(); }

src/libnest2d/include/libnest2d/placers/nfpplacer.hpp

@@ -555,6 +555,13 @@ public:
         Base::clearItems();
     }
 
+    //clearFunc: itm will be cleared if return ture
+    inline void clearItems(const std::function<bool(const Item &itm)> &clearFunc)
+    {
+        finalAlign(bin_);
+        Base::clearItems(clearFunc);
+    }
+
     void preload(const ItemGroup& packeditems) {
         Base::preload(packeditems);
         if (config_.on_preload)

src/libnest2d/include/libnest2d/placers/placer_boilerplate.hpp

@@ -96,6 +96,17 @@ public:
         farea_valid_ = false;
     }
 
+    //clearFunc: will be cleared if return true
+    inline void clearItems(const std::function<bool(const Item &itm)> &clearFunc)
+    {
+        ItemGroup newGroup;
+        for (auto &i : items_) {
+            if (clearFunc(i.get()) == false) { newGroup.push_back(i); }
+        }
+        std::swap(newGroup, items_);
+        farea_valid_ = false;
+    }
+
     inline double filledArea() const {
         if(farea_valid_) return farea_;
         else {

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

@@ -161,6 +161,24 @@ public:
                     makeProgress(placers[j], j);
                 }
 
+                if (was_packed && it->get().has_tried_with_excluded) {
+                    placers[j].clearItems([](const Item &itm) { return itm.isFixed() && !itm.is_wipe_tower; });
+                    placers[j].preload(fixed_bins[placers.size() - 1]);
+                }
+                bool placer_not_packed = !was_packed && !placers.empty() && j == placers.size() && placers[j - 1].getPackedSize() == 0; // large item is not placed into the bin
+                if (placer_not_packed) {
+                    if (it->get().has_tried_with_excluded == false) {
+                        it->get().has_tried_with_excluded = true;
+                        placers[j - 1].clearItems([](const Item &itm) { return itm.isFixed()&&!itm.is_wipe_tower; });
+                        placers[j - 1].preload(pconfig.m_excluded_items);
+                        j = j - 1;
+                        continue;
+                    } else {
+                        placers[j - 1].clearItems([](const Item &itm) { return itm.isFixed() && !itm.is_wipe_tower; });
+                        placers[j - 1].preload(fixed_bins[placers.size() - 1]);
+                    }
+                }
+
                 if(!was_packed){
                     if (this->unfitindicator_ && !placers.empty())
                         this->unfitindicator_(it->get().name + ", height=" +std::to_string(it->get().height)

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

@@ -37,7 +37,7 @@ protected:
         // then it should be removed from the list
         Placer p{ bin };
         p.configure(pcfg);
-        //p.preload(pcfg.m_excluded_items);
+        p.preload(pcfg.m_excluded_items);
         auto it = c.begin();
         while (it != c.end() && !stopcond_()) {