From 875fb6892f36a03706f4de0ad23e059ba9b42dcb Mon Sep 17 00:00:00 2001
From: tamasmeszaros <meszaros.q@gmail.com>
Date: Tue, 20 Sep 2022 10:53:42 +0200
Subject: [PATCH] Fix partial arrange behavior

---
 .../include/libnest2d/placers/nfpplacer.hpp   | 22 +++++++++----------
 1 file changed, 10 insertions(+), 12 deletions(-)

diff --git a/src/libnest2d/include/libnest2d/placers/nfpplacer.hpp b/src/libnest2d/include/libnest2d/placers/nfpplacer.hpp
index 00f6a999f..5b5311d90 100644
--- a/src/libnest2d/include/libnest2d/placers/nfpplacer.hpp
+++ b/src/libnest2d/include/libnest2d/placers/nfpplacer.hpp
@@ -509,28 +509,24 @@ public:
         return diff;
     }
 
-    template<class Range = ConstItemRange<typename Base::DefaultIter>>
-    PackResult trypack(Item& item,
-                        const Range& remaining = Range()) {
-        auto result = _trypack(item, remaining);
-
-        // Experimental
-        // if(!result) repack(item, result);
-
-        return result;
-    }
-
     ~_NofitPolyPlacer() {
         clearItems();
     }
 
     inline void clearItems() {
         finalAlign(bin_);
+        merged_pile_ = {};
         Base::clearItems();
     }
 
     void preload(const ItemGroup& packeditems) {
         Base::preload(packeditems);
+
+        for (const Item& itm : packeditems)
+            merged_pile_.emplace_back(itm.transformedShape());
+
+        nfp::merge(merged_pile_);
+
         if (config_.on_preload)
             config_.on_preload(packeditems, config_);
     }
@@ -606,8 +602,9 @@ private:
 
     using Edges = EdgeCache<RawShape>;
 
+public:
     template<class Range = ConstItemRange<typename Base::DefaultIter>>
-    PackResult _trypack(
+    PackResult trypack(
             Item& item,
             const Range& remaining = Range()) {
 
@@ -897,6 +894,7 @@ private:
         return ret;
     }
 
+private:
     inline void finalAlign(const RawShape& pbin) {
         auto bbin = sl::boundingBox(pbin);
         finalAlign(bbin);