| 1 |  |  | <?php | 
            
                                                                                                            
                            
            
                                    
            
            
                | 2 |  |  | /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 3 |  |  |  * Box packing (3D bin packing, knapsack problem). | 
            
                                                                                                            
                            
            
                                    
            
            
                | 4 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 5 |  |  |  * @author Doug Wright | 
            
                                                                                                            
                            
            
                                    
            
            
                | 6 |  |  |  */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 7 |  |  | declare(strict_types=1); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 8 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 9 |  |  | namespace DVDoug\BoxPacker; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 10 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 11 |  |  | use Psr\Log\LoggerAwareInterface; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 12 |  |  | use Psr\Log\LoggerAwareTrait; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 13 |  |  | use Psr\Log\NullLogger; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 14 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 15 |  |  | /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 16 |  |  |  * Actual packer. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 17 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 18 |  |  |  * @author Doug Wright | 
            
                                                                                                            
                            
            
                                    
            
            
                | 19 |  |  |  */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 20 |  |  | class VolumePacker implements LoggerAwareInterface | 
            
                                                                                                            
                            
            
                                    
            
            
                | 21 |  |  | { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 22 |  |  |     use LoggerAwareTrait; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 23 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 24 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 25 |  |  |      * Box to pack items into. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 26 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 27 |  |  |      * @var Box | 
            
                                                                                                            
                            
            
                                    
            
            
                | 28 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 29 |  |  |     protected $box; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 30 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 31 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 32 |  |  |      * @var int | 
            
                                                                                                            
                            
            
                                    
            
            
                | 33 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 34 |  |  |     protected $boxWidth; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 35 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 36 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 37 |  |  |      * @var int | 
            
                                                                                                            
                            
            
                                    
            
            
                | 38 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 39 |  |  |     protected $boxLength; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 40 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 41 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 42 |  |  |      * List of items to be packed. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 43 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 44 |  |  |      * @var ItemList | 
            
                                                                                                            
                            
            
                                    
            
            
                | 45 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 46 |  |  |     protected $items; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 47 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 48 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 49 |  |  |      * List of items to be packed. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 50 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 51 |  |  |      * @var ItemList | 
            
                                                                                                            
                            
            
                                    
            
            
                | 52 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 53 |  |  |     protected $skippedItems; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 54 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 55 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 56 |  |  |      * Remaining weight capacity of the box. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 57 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 58 |  |  |      * @var int | 
            
                                                                                                            
                            
            
                                    
            
            
                | 59 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 60 |  |  |     protected $remainingWeight; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 61 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 62 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 63 |  |  |      * Whether the box was rotated for packing. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 64 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 65 |  |  |      * @var bool | 
            
                                                                                                            
                            
            
                                    
            
            
                | 66 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 67 |  |  |     protected $boxRotated = false; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 68 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 69 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 70 |  |  |      * @var PackedLayer[] | 
            
                                                                                                            
                            
            
                                    
            
            
                | 71 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 72 |  |  |     protected $layers = []; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 73 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 74 |  |  |     private $z = 0; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 75 |  |  |     private $packingWidthLeft; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 76 |  |  |     private $packingLengthLeft; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 77 |  |  |     private $packingDepthLeft; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 78 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 79 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 80 |  |  |      * Constructor. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 81 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 82 |  |  |      * @param Box      $box | 
            
                                                                                                            
                            
            
                                    
            
            
                | 83 |  |  |      * @param ItemList $items | 
            
                                                                                                            
                            
            
                                    
            
            
                | 84 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 85 | 27 |  |     public function __construct(Box $box, ItemList $items) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 86 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 87 | 27 |  |         $this->box = $box; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 88 | 27 |  |         $this->items = $items; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 89 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 90 | 27 |  |         $this->boxWidth = max($this->box->getInnerWidth(), $this->box->getInnerLength()); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 91 | 27 |  |         $this->boxLength = min($this->box->getInnerWidth(), $this->box->getInnerLength()); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 92 | 27 |  |         $this->remainingWeight = $this->box->getMaxWeight() - $this->box->getEmptyWeight(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 93 | 27 |  |         $this->skippedItems = new ItemList(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 94 | 27 |  |         $this->logger = new NullLogger(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 95 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 96 |  |  |         // we may have just rotated the box for packing purposes, record if we did | 
            
                                                                                                            
                            
            
                                    
            
            
                | 97 | 27 |  |         if ($this->box->getInnerWidth() != $this->boxWidth || $this->box->getInnerLength() != $this->boxLength) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 98 | 7 |  |             $this->boxRotated = true; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 99 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 100 | 27 |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 101 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 102 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 103 |  |  |      * Pack as many items as possible into specific given box. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 104 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 105 |  |  |      * @return PackedBox packed box | 
            
                                                                                                            
                            
            
                                    
            
            
                | 106 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 107 | 27 |  |     public function pack(): PackedBox | 
            
                                                                                                            
                            
            
                                    
            
            
                | 108 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 109 | 27 |  |         $this->logger->debug("[EVALUATING BOX] {$this->box->getReference()}"); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 110 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 111 | 27 |  |         $this->packingWidthLeft = $this->boxWidth; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 112 | 27 |  |         $this->packingLengthLeft = $this->boxLength; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 113 | 27 |  |         $this->packingDepthLeft = $this->box->getInnerDepth(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 114 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 115 |  |  |         /* | 
            
                                                                                                            
                            
            
                                    
            
            
                | 116 |  |  |          * Pack 1 vertical "layer" at a time | 
            
                                                                                                            
                            
            
                                    
            
            
                | 117 |  |  |          */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 118 | 27 |  |         while (count($this->items) > 0) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 119 | 27 |  |             $this->packLayer(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 120 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 121 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 122 | 27 |  |         $this->logger->debug('done with this box'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 123 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 124 | 27 |  |         return $this->createPackedBox(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 125 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 126 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 127 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 128 |  |  |      * Pack items into an individual layer | 
            
                                                                                                            
                            
            
                                    
            
            
                | 129 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 130 | 27 |  |     protected function packLayer() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 131 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 132 | 27 |  |         $this->layers[] = $layer = new PackedLayer(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 133 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 134 | 27 |  |         $prevItem = null; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 135 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 136 | 27 |  |         $x = $y = $rowWidth = $rowLength = $layerWidth = $layerLength = $layerDepth = 0; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 137 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 138 | 27 |  |         while (count($this->items) > 0) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 139 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 140 | 27 |  |             $itemToPack = $this->items->extract(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 141 | 27 |  |             $nextItem = $this->getNextItem(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 142 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 143 |  |  |             //skip items that are simply too heavy or too large | 
            
                                                                                                            
                            
            
                                    
            
            
                | 144 | 27 |  |             if (!$this->checkConstraints($itemToPack)) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 145 | 6 |  |                 $this->rebuildItemList(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 146 | 6 |  |                 continue; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 147 |  |  |             } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 148 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 149 | 27 |  |             $orientatedItem = $this->getOrientationForItem($itemToPack, $prevItem, $nextItem, $this->hasItemsLeftToPack(), $this->packingWidthLeft, $this->packingLengthLeft, $this->packingDepthLeft); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 150 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 151 | 27 |  |             if ($orientatedItem instanceof OrientatedItem) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 152 | 27 |  |                 $packedItem = PackedItem::fromOrientatedItem($orientatedItem, $x, $y, $this->z); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 153 | 27 |  |                 $layer->insert($packedItem); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 154 | 27 |  |                 $this->remainingWeight -= $orientatedItem->getItem()->getWeight(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 155 | 27 |  |                 $this->packingWidthLeft -= $orientatedItem->getWidth(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 156 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 157 | 27 |  |                 $rowWidth += $orientatedItem->getWidth(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 158 | 27 |  |                 $rowLength = max($rowLength, $orientatedItem->getLength()); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 159 | 27 |  |                 $layerDepth = max($layerDepth, $orientatedItem->getDepth()); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 160 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 161 |  |  |                 //allow items to be stacked in place within the same footprint up to current layer depth | 
            
                                                                                                            
                            
            
                                    
            
            
                | 162 | 27 |  |                 $stackableDepth = $layerDepth - $orientatedItem->getDepth(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 163 | 27 |  |                 $this->tryAndStackItemsIntoSpace($layer, $prevItem, $nextItem, $orientatedItem->getWidth(), $orientatedItem->getLength(), $stackableDepth, $x, $y, $this->z + $orientatedItem->getDepth()); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 164 | 27 |  |                 $x += $orientatedItem->getWidth(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 165 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 166 | 27 |  |                 $prevItem = $packedItem; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 167 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 168 | 27 |  |                 $this->rebuildItemList(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 169 |  |  |             } else { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 170 | 20 |  |                 if ($layerWidth == 0 && $layerDepth == 0) { // zero items on layer | 
            
                                                                                                            
                            
            
                                    
            
            
                | 171 | 1 |  |                     $this->logger->debug("doesn't fit on layer even when empty, skipping for good"); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 172 | 1 |  |                     $prevItem = null; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 173 | 1 |  |                     continue; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 174 | 20 |  |                 } elseif (count($this->items) > 0) { // skip for now, move on to the next item | 
            
                                                                                                            
                            
            
                                    
            
            
                | 175 | 18 |  |                     $this->logger->debug("doesn't fit, skipping for now"); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 176 | 18 |  |                     $this->skippedItems->insert($itemToPack); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 177 | 20 |  |                 } elseif ($x > 0 && $this->packingLengthLeft >= min($itemToPack->getWidth(), $itemToPack->getLength())) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 178 | 20 |  |                     $this->logger->debug('No more fit in width wise, resetting for new row'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 179 | 20 |  |                     $layerWidth = max($layerWidth, $rowWidth); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 180 | 20 |  |                     $layerLength += $rowLength; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 181 | 20 |  |                     $this->packingWidthLeft += $rowWidth; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 182 | 20 |  |                     $this->packingLengthLeft -= $rowLength; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 183 | 20 |  |                     $y += $rowLength; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 184 | 20 |  |                     $x = $rowWidth = $rowLength = 0; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 185 | 20 |  |                     $this->rebuildItemList($itemToPack); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 186 | 20 |  |                     $prevItem = null; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 187 | 20 |  |                     continue; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 188 |  |  |                 } else { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 189 | 13 |  |                     $this->logger->debug('no items fit, so starting next vertical layer'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 190 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 191 | 13 |  |                     $layerWidth = max($layerWidth, $rowWidth); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 192 | 13 |  |                     $layerLength += $rowLength; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 193 | 13 |  |                     $this->packingWidthLeft = $rowWidth ? min(intval($layerWidth * 1.1), $this->boxWidth) : $this->boxWidth; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 194 | 13 |  |                     $this->packingLengthLeft = $rowLength ? min(intval($layerLength * 1.1), $this->boxLength) : $this->boxLength; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 195 | 13 |  |                     $this->packingDepthLeft -= $layerDepth; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 196 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 197 | 13 |  |                     $this->z += $layerDepth; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 198 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 199 | 13 |  |                     $this->rebuildItemList($itemToPack); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 200 | 13 |  |                     return; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 201 |  |  |                 } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 202 |  |  |             } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 203 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 204 | 27 |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 205 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 206 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 207 |  |  |      * @param Item            $itemToPack | 
            
                                                                                                            
                            
            
                                    
            
            
                | 208 |  |  |      * @param PackedItem|null $prevItem | 
            
                                                                                                            
                            
            
                                    
            
            
                | 209 |  |  |      * @param Item|null       $nextItem | 
            
                                                                                                            
                            
            
                                    
            
            
                | 210 |  |  |      * @param bool            $isLastItem | 
            
                                                                                                            
                            
            
                                    
            
            
                | 211 |  |  |      * @param int             $maxWidth | 
            
                                                                                                            
                            
            
                                    
            
            
                | 212 |  |  |      * @param int             $maxLength | 
            
                                                                                                            
                            
            
                                    
            
            
                | 213 |  |  |      * @param int             $maxDepth | 
            
                                                                                                            
                            
            
                                    
            
            
                | 214 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 215 |  |  |      * @return OrientatedItem|null | 
            
                                                                                                            
                            
            
                                    
            
            
                | 216 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 217 | 27 |  |     protected function getOrientationForItem( | 
            
                                                                                                            
                            
            
                                    
            
            
                | 218 |  |  |         Item $itemToPack, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 219 |  |  |         ?PackedItem $prevItem, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 220 |  |  |         ?Item $nextItem, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 221 |  |  |         bool $isLastItem, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 222 |  |  |         int $maxWidth, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 223 |  |  |         int $maxLength, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 224 |  |  |         int $maxDepth | 
            
                                                                                                            
                            
            
                                    
            
            
                | 225 |  |  |     ): ?OrientatedItem { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 226 | 27 |  |         $this->logger->debug( | 
            
                                                                                                            
                            
            
                                    
            
            
                | 227 | 27 |  |             "evaluating item {$itemToPack->getDescription()} for fit", | 
            
                                                                                                            
                            
            
                                    
            
            
                | 228 |  |  |             [ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 229 | 27 |  |                 'item'  => $itemToPack, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 230 |  |  |                 'space' => [ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 231 | 27 |  |                     'maxWidth'    => $maxWidth, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 232 | 27 |  |                     'maxLength'   => $maxLength, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 233 | 27 |  |                     'maxDepth'    => $maxDepth, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 234 |  |  |                 ], | 
            
                                                                                                            
                            
            
                                    
            
            
                | 235 |  |  |             ] | 
            
                                                                                                            
                            
            
                                    
            
            
                | 236 |  |  |         ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 237 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 238 | 27 |  |         $prevOrientatedItem = $prevItem ? $prevItem->toOrientatedItem() : null; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 239 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 240 | 27 |  |         $orientatedItemFactory = new OrientatedItemFactory(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 241 | 27 |  |         $orientatedItemFactory->setLogger($this->logger); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 242 | 27 |  |         $orientatedItem = $orientatedItemFactory->getBestOrientation($this->box, $itemToPack, $prevOrientatedItem, $nextItem, $isLastItem, $maxWidth, $maxLength, $maxDepth); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 243 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 244 | 27 |  |         return $orientatedItem; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 245 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 246 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 247 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 248 |  |  |      * Figure out if we can stack the next item vertically on top of this rather than side by side | 
            
                                                                                                            
                            
            
                                    
            
            
                | 249 |  |  |      * Used when we've packed a tall item, and have just put a shorter one next to it. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 250 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 251 |  |  |      * @param PackedLayer     $layer | 
            
                                                                                                            
                            
            
                                    
            
            
                | 252 |  |  |      * @param PackedItem|null $prevItem | 
            
                                                                                                            
                            
            
                                    
            
            
                | 253 |  |  |      * @param Item|null       $nextItem | 
            
                                                                                                            
                            
            
                                    
            
            
                | 254 |  |  |      * @param int             $maxWidth | 
            
                                                                                                            
                            
            
                                    
            
            
                | 255 |  |  |      * @param int             $maxLength | 
            
                                                                                                            
                            
            
                                    
            
            
                | 256 |  |  |      * @param int             $maxDepth | 
            
                                                                                                            
                            
            
                                    
            
            
                | 257 |  |  |      * @param int             $x | 
            
                                                                                                            
                            
            
                                    
            
            
                | 258 |  |  |      * @param int             $y | 
            
                                                                                                            
                            
            
                                    
            
            
                | 259 |  |  |      * @param int             $z | 
            
                                                                                                            
                            
            
                                    
            
            
                | 260 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 261 | 27 |  |     protected function tryAndStackItemsIntoSpace( | 
            
                                                                                                            
                            
            
                                    
            
            
                | 262 |  |  |         PackedLayer $layer, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 263 |  |  |         ?PackedItem $prevItem, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 264 |  |  |         ?Item $nextItem, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 265 |  |  |         int $maxWidth, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 266 |  |  |         int $maxLength, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 267 |  |  |         int $maxDepth, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 268 |  |  |         int $x, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 269 |  |  |         int $y, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 270 |  |  |         int $z | 
            
                                                                                                            
                            
            
                                    
            
            
                | 271 |  |  |     ): void { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 272 | 27 |  |         while (count($this->items) > 0 && $this->checkNonDimensionalConstraints($this->items->top())) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 273 | 26 |  |             $stackedItem = $this->getOrientationForItem( | 
            
                                                                                                            
                            
            
                                    
            
            
                | 274 | 26 |  |                 $this->items->top(), | 
            
                                                                                                            
                            
            
                                    
            
            
                | 275 | 26 |  |                 $prevItem, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 276 | 26 |  |                 $nextItem, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 277 | 26 |  |                 $this->items->count() === 1, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 278 | 26 |  |                 $maxWidth, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 279 | 26 |  |                 $maxLength, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 280 | 26 |  |                 $maxDepth | 
            
                                                                                                            
                            
            
                                    
            
            
                | 281 |  |  |             ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 282 | 26 |  |             if ($stackedItem) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 283 | 2 |  |                 $this->remainingWeight -= $this->items->top()->getWeight(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 284 | 2 |  |                 $layer->insert(PackedItem::fromOrientatedItem($stackedItem, $x, $y, $z)); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 285 | 2 |  |                 $this->items->extract(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 286 | 2 |  |                 $maxDepth -= $stackedItem->getDepth(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 287 | 2 |  |                 $z += $stackedItem->getDepth(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 288 |  |  |             } else { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 289 | 26 |  |                 break; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 290 |  |  |             } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 291 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 292 | 27 |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 293 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 294 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 295 |  |  |      * Check item generally fits into box. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 296 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 297 |  |  |      * @param Item           $itemToPack | 
            
                                                                                                            
                            
            
                                    
            
            
                | 298 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 299 |  |  |      * @return bool | 
            
                                                                                                            
                            
            
                                    
            
            
                | 300 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 301 | 27 |  |     protected function checkConstraints( | 
            
                                                                                                            
                            
            
                                    
            
            
                | 302 |  |  |         Item $itemToPack | 
            
                                                                                                            
                            
            
                                    
            
            
                | 303 |  |  |     ): bool { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 304 | 27 |  |         return $this->checkNonDimensionalConstraints($itemToPack) && | 
            
                                                                                                            
                            
            
                                    
            
            
                | 305 | 27 |  |                $this->checkDimensionalConstraints($itemToPack); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 306 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 307 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 308 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 309 |  |  |      * As well as purely dimensional constraints, there are other constraints that need to be met | 
            
                                                                                                            
                            
            
                                    
            
            
                | 310 |  |  |      * e.g. weight limits or item-specific restrictions (e.g. max <x> batteries per box). | 
            
                                                                                                            
                            
            
                                    
            
            
                | 311 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 312 |  |  |      * @param Item           $itemToPack | 
            
                                                                                                            
                            
            
                                    
            
            
                | 313 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 314 |  |  |      * @return bool | 
            
                                                                                                            
                            
            
                                    
            
            
                | 315 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 316 | 27 |  |     protected function checkNonDimensionalConstraints(Item $itemToPack): bool | 
            
                                                                                                            
                            
            
                                    
            
            
                | 317 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 318 | 27 |  |         $weightOK = $itemToPack->getWeight() <= $this->remainingWeight; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 319 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 320 | 27 |  |         if ($itemToPack instanceof ConstrainedItem) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 321 | 1 |  |             return $weightOK && $itemToPack->canBePackedInBox($this->getPackedItemList(), $this->box); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 322 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 323 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 324 | 27 |  |         return $weightOK; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 325 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 326 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 327 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 328 |  |  |      * Check the item physically fits in the box (at all). | 
            
                                                                                                            
                            
            
                                    
            
            
                | 329 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 330 |  |  |      * @param Item $itemToPack | 
            
                                                                                                            
                            
            
                                    
            
            
                | 331 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 332 |  |  |      * @return bool | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 333 |  |  |      */ | 
            
                                                                        
                            
            
                                    
            
            
                | 334 | 27 |  |     protected function checkDimensionalConstraints(Item $itemToPack): bool | 
            
                                                                        
                            
            
                                    
            
            
                | 335 |  |  |     { | 
            
                                                                        
                            
            
                                    
            
            
                | 336 | 27 |  |         $orientatedItemFactory = new OrientatedItemFactory(); | 
            
                                                                        
                            
            
                                    
            
            
                | 337 | 27 |  |         $orientatedItemFactory->setLogger($this->logger); | 
            
                                                                        
                            
            
                                    
            
            
                | 338 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 339 | 27 |  |         return (bool) $orientatedItemFactory->getPossibleOrientationsInEmptyBox($itemToPack, $this->box); | 
            
                                                                        
                            
            
                                    
            
            
                | 340 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 341 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 342 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 343 |  |  |      * Reintegrate skipped items into main list. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 344 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 345 |  |  |      * @param Item|null $currentItem item from current iteration | 
            
                                                                                                            
                            
            
                                    
            
            
                | 346 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 347 | 27 |  |     protected function rebuildItemList(?Item $currentItem = null): void | 
            
                                                                                                            
                            
            
                                    
            
            
                | 348 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 349 | 27 |  |         if (count($this->items) === 0) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 350 | 27 |  |             $this->items = $this->skippedItems; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 351 | 27 |  |             $this->skippedItems = new ItemList(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 352 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 353 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 354 | 27 |  |         if ($currentItem instanceof Item) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 355 | 20 |  |             $this->items->insert($currentItem); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 356 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 357 | 27 |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 358 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 359 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 360 |  |  |      * Create the final PackedBox object | 
            
                                                                                                            
                            
            
                                    
            
            
                | 361 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 362 |  |  |      * @return PackedBox | 
            
                                                                                                            
                            
            
                                    
            
            
                | 363 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 364 | 27 |  |     protected function createPackedBox(): PackedBox | 
            
                                                                                                            
                            
            
                                    
            
            
                | 365 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 366 |  |  |         //if we rotated the box for packing, need to swap back width/length of the packed items | 
            
                                                                                                            
                            
            
                                    
            
            
                | 367 | 27 |  |         if ($this->boxRotated) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 368 | 7 |  |             $rotatedPackedItems = new PackedItemList(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 369 |  |  |             /** @var PackedItem $item */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 370 | 7 |  |             foreach ($this->getPackedItemList() as $item) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 371 | 7 |  |                 $packedItem = new PackedItem($item->getItem(), $item->getY(), $item->getX(), $item->getZ(), $item->getLength(), $item->getWidth(), $item->getDepth()); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 372 | 7 |  |                 $rotatedPackedItems->insert($packedItem); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 373 |  |  |             } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 374 | 7 |  |             return new PackedBox($this->box, $rotatedPackedItems); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 375 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 376 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 377 | 20 |  |         return new PackedBox($this->box, $this->getPackedItemList()); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 378 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 379 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 380 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 381 |  |  |      * Are there items left to pack? | 
            
                                                                                                            
                            
            
                                    
            
            
                | 382 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 383 |  |  |      * @return bool | 
            
                                                                                                            
                            
            
                                    
            
            
                | 384 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 385 | 27 |  |     protected function hasItemsLeftToPack(): bool | 
            
                                                                                                            
                            
            
                                    
            
            
                | 386 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 387 | 27 |  |         return count($this->skippedItems) + count($this->items) === 0; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 388 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 389 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 390 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 391 |  |  |      * Return next item in line for packing. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 392 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 393 |  |  |      * @return Item|null | 
            
                                                                                                            
                            
            
                                    
            
            
                | 394 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 395 | 27 |  |     protected function getNextItem(): ?Item | 
            
                                                                                                            
                            
            
                                    
            
            
                | 396 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 397 | 27 |  |         return count($this->items) ? $this->items->top() : null; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 398 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 399 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 400 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 401 |  |  |      * Generate a single list of items packed | 
            
                                                                                                            
                            
            
                                    
            
            
                | 402 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 403 |  |  |      * @return PackedItemList | 
            
                                                                                                            
                            
            
                                    
            
            
                | 404 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 405 | 27 |  |     protected function getPackedItemList(): PackedItemList | 
            
                                                                                                            
                            
            
                                    
            
            
                | 406 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 407 | 27 |  |         $packedItemList = new PackedItemList(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 408 | 27 |  |         foreach ($this->layers as $layer) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 409 | 27 |  |             foreach ($layer->getItems() as $packedItem) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 410 | 27 |  |                 $packedItemList->insert($packedItem); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 411 |  |  |             } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 412 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 413 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 414 | 27 |  |         return $packedItemList; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 415 |  |  |     } | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 416 |  |  | } | 
            
                                                        
            
                                    
            
            
                | 417 |  |  |  |