From 041630fdc173e28e863beee9eee3c830a1c4055b Mon Sep 17 00:00:00 2001
From: Doug Wright <github@dougweb.org>
Date: Thu, 30 Jan 2020 00:56:15 +0000
Subject: [PATCH] Special case same object as a fast way to detect identical
 dimensions

---
 src/OrientatedItemFactory.php | 14 +++++++++-----
 src/VolumePacker.php          |  3 +++
 2 files changed, 12 insertions(+), 5 deletions(-)

diff --git a/src/OrientatedItemFactory.php b/src/OrientatedItemFactory.php
index 4e19d3d6..9540961c 100644
--- a/src/OrientatedItemFactory.php
+++ b/src/OrientatedItemFactory.php
@@ -162,11 +162,15 @@ public function getPossibleOrientations(
 
         $isSame = false;
         if ($prevItem) {
-            $itemADimensions = [$item->getWidth(), $item->getLength(), $item->getDepth()];
-            $itemBDimensions = [$prevItem->getWidth(), $prevItem->getLength(), $prevItem->getDepth()];
-            sort($itemADimensions);
-            sort($itemBDimensions);
-            $isSame = ($itemADimensions === $itemBDimensions);
+            if ($item === $prevItem->getItem()) {
+                $isSame = true;
+            } else {
+                $itemADimensions = [$item->getWidth(), $item->getLength(), $item->getDepth()];
+                $itemBDimensions = [$prevItem->getWidth(), $prevItem->getLength(), $prevItem->getDepth()];
+                sort($itemADimensions);
+                sort($itemBDimensions);
+                $isSame = ($itemADimensions === $itemBDimensions);
+            }
         }
 
         //Special case items that are the same as what we just packed - keep orientation
diff --git a/src/VolumePacker.php b/src/VolumePacker.php
index a68e3464..f5ada315 100644
--- a/src/VolumePacker.php
+++ b/src/VolumePacker.php
@@ -449,6 +449,9 @@ protected function getCurrentPackedDepth()
      */
     protected static function isSameDimensions(Item $itemA, Item $itemB)
     {
+        if ($itemA === $itemB) {
+            return true;
+        }
         $itemADimensions = [$itemA->getWidth(), $itemA->getLength(), $itemA->getDepth()];
         $itemBDimensions = [$itemB->getWidth(), $itemB->getLength(), $itemB->getDepth()];
         sort($itemADimensions);