VolumePacker::setLogger() - Code Metrics - Inspection of "Fix tests" - dvdoug/BoxPacker - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 67bebb...73147e )

by Doug

created 2019-08-24 22:45 UTC

VolumePacker::setLogger() A

↳ Parent: VolumePacker

Complexity

Conditions	1
Paths	1

Size

Total Lines	4
Code Lines	2

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	3
CRAP Score	1

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
cc	1
eloc	2
c	1
b	0
f	0
nc	1
nop	1
dl	0
loc	4
ccs	3
cts	3
cp	1
crap	1
rs	10

<?php
/**
 * Box packing (3D bin packing, knapsack problem).
 *
 * @author Doug Wright
 */
declare(strict_types=1);

namespace DVDoug\BoxPacker;

use Psr\Log\LoggerAwareInterface;
use Psr\Log\LoggerAwareTrait;
use Psr\Log\LoggerInterface;
use Psr\Log\NullLogger;
use function count;
use function max;
use function min;

/**
 * Actual packer.
 *
 * @author Doug Wright
 */
class VolumePacker implements LoggerAwareInterface
{
    /**
     * The logger instance.
     *
     * @var LoggerInterface
     */
    protected $logger;

    /**
     * Box to pack items into.
     *
     * @var Box
     */
    protected $box;

    /**
     * @var int
     */
    protected $boxWidth;

    /**
     * @var int
     */
    protected $boxLength;

    /**
     * List of items to be packed.
     *
     * @var ItemList
     */
    protected $items;

    /**
     * List of items temporarily skipped to be packed.
     *
     * @var array
     */
    protected $skippedItems = [];

    /**
     * Remaining weight capacity of the box.
     *
     * @var int
     */
    protected $remainingWeight;

    /**
     * Whether the box was rotated for packing.
     *
     * @var bool
     */
    protected $boxRotated = false;

    /**
     * @var PackedLayer[]
     */
    protected $layers = [];

    /**
     * Whether the packer is in look-ahead mode (i.e. working ahead of the main packing).
     *
     * @var bool
     */
    protected $lookAheadMode = false;

    /**
     * @var OrientatedItemFactory
     */
    private $orientatedItemFactory;

    /**
     * Constructor.
     *
     * @param Box      $box
     * @param ItemList $items
     */
    public function __construct(Box $box, ItemList $items)
    {
        $this->box = $box;
        $this->items = $items;

        $this->boxWidth = max($this->box->getInnerWidth(), $this->box->getInnerLength());
        $this->boxLength = min($this->box->getInnerWidth(), $this->box->getInnerLength());
        $this->remainingWeight = $this->box->getMaxWeight() - $this->box->getEmptyWeight();
        $this->logger = new NullLogger();

        // we may have just rotated the box for packing purposes, record if we did
        if ($this->box->getInnerWidth() !== $this->boxWidth || $this->box->getInnerLength() !== $this->boxLength) {
            $this->boxRotated = true;
        }

        $this->orientatedItemFactory = new OrientatedItemFactory($this->box);
    }

    /**
     * Sets a logger.
     *
     * @param LoggerInterface $logger
     */
    public function setLogger(LoggerInterface $logger): void
    {
        $this->logger = $logger;
        $this->orientatedItemFactory->setLogger($logger);
    }

    /**
     * @internal
     * @param bool $lookAhead
     */
    public function setLookAheadMode(bool $lookAhead): void
    {
        $this->lookAheadMode = $lookAhead;
    }

    /**
     * Pack as many items as possible into specific given box.
     *
     * @return PackedBox packed box
     */
    public function pack(): PackedBox
    {
        $this->logger->debug("[EVALUATING BOX] {$this->box->getReference()}", ['box' => $this->box]);

        while (count($this->items) > 0) {
            $layerStartDepth = $this->getCurrentPackedDepth();
            $this->packLayer($layerStartDepth, $this->boxWidth, $this->boxLength, $this->box->getInnerDepth() - $layerStartDepth);
        }

        if ($this->boxRotated) {
            $this->rotateLayersNinetyDegrees();
        }

        if (!$this->lookAheadMode) {
            $this->stabiliseLayers();
        }

        $this->logger->debug('done with this box');

        return new PackedBox($this->box, $this->getPackedItemList());
    }

    /**
     * Pack items into an individual vertical layer.
     *
     * @param int $startDepth
     * @param int $widthLeft
     * @param int $lengthLeft
     * @param int $depthLeft
     */
    protected function packLayer(int $startDepth, int $widthLeft, int $lengthLeft, int $depthLeft): void
    {
        $this->layers[] = $layer = new PackedLayer();
        $prevItem = null;
        $x = $y = $rowWidth = $rowLength = $layerDepth = 0;

        while (count($this->items) > 0) {
            $itemToPack = $this->items->extract();

            //skip items that are simply too heavy or too large
            if (!$this->checkNonDimensionalConstraints($itemToPack)) {
                continue;
            }

            $orientatedItem = $this->getOrientationForItem($itemToPack, $prevItem, $this->items, !$this->hasItemsLeftToPack(), $widthLeft, $lengthLeft, $depthLeft, $rowLength, $x, $y, $startDepth);

            if ($orientatedItem instanceof OrientatedItem) {
                $packedItem = PackedItem::fromOrientatedItem($orientatedItem, $x, $y, $startDepth);
                $layer->insert($packedItem);
                $this->remainingWeight -= $orientatedItem->getItem()->getWeight();
                $widthLeft -= $orientatedItem->getWidth();

                $rowWidth += $orientatedItem->getWidth();
                $rowLength = max($rowLength, $orientatedItem->getLength());
                $layerDepth = max($layerDepth, $orientatedItem->getDepth());

                //allow items to be stacked in place within the same footprint up to current layer depth
                $stackableDepth = $layerDepth - $orientatedItem->getDepth();
                $this->tryAndStackItemsIntoSpace($layer, $prevItem, $this->items, $orientatedItem->getWidth(), $orientatedItem->getLength(), $stackableDepth, $x, $y, $startDepth + $orientatedItem->getDepth(), $rowLength);
                $x += $orientatedItem->getWidth();

                $prevItem = $packedItem;
                if (count($this->items) === 0) {
                    $this->rebuildItemList();
                }
            } elseif (count($layer->getItems()) === 0) { // zero items on layer
                $this->logger->debug("doesn't fit on layer even when empty, skipping for good");
                continue;
            } elseif ($widthLeft > 0 && count($this->items) > 0) { // skip for now, move on to the next item
                $this->logger->debug("doesn't fit, skipping for now");
                $this->skippedItems[] = $itemToPack;
            } elseif ($x > 0 && $lengthLeft >= min($itemToPack->getWidth(), $itemToPack->getLength(), $itemToPack->getDepth())) {
                $this->logger->debug('No more fit in width wise, resetting for new row');
                $widthLeft += $rowWidth;
                $lengthLeft -= $rowLength;
                $y += $rowLength;
                $x = $rowWidth = $rowLength = 0;
                $this->skippedItems[] = $itemToPack;
                $this->rebuildItemList();
                $prevItem = null;
                continue;
            } else {
                $this->logger->debug('no items fit, so starting next vertical layer');
                $this->skippedItems[] = $itemToPack;
                $this->rebuildItemList();
                return;
            }
        }
    }

    /**
     * During packing, it is quite possible that layers have been created that aren't physically stable
     * i.e. they overhang the ones below.
     *
     * This function reorders them so that the ones with the greatest surface area are placed at the bottom
     */
    public function stabiliseLayers(): void
    {
        $stabiliser = new LayerStabiliser();
        $this->layers = $stabiliser->stabilise($this->layers);
    }

    /**
     * @param Item            $itemToPack
     * @param PackedItem|null $prevItem
     * @param ItemList        $nextItems
     * @param bool            $isLastItem
     * @param int             $maxWidth
     * @param int             $maxLength
     * @param int             $maxDepth
     * @param int             $rowLength
     * @param int             $x
     * @param int             $y
     * @param int             $z
     *
     * @return OrientatedItem|null
     */
    protected function getOrientationForItem(
        Item $itemToPack,
        ?PackedItem $prevItem,
        ItemList $nextItems,
        bool $isLastItem,
        int $maxWidth,
        int $maxLength,
        int $maxDepth,
        int $rowLength,
        int $x,
        int $y,
        int $z
    ): ?OrientatedItem {
        $this->logger->debug(
            "evaluating item {$itemToPack->getDescription()} for fit",
            [
                'item' => $itemToPack,
                'space' => [
                    'maxWidth' => $maxWidth,
                    'maxLength' => $maxLength,
                    'maxDepth' => $maxDepth,
                ],
            ]
        );

        $prevOrientatedItem = $prevItem ? $prevItem->toOrientatedItem() : null;
        $prevPackedItemList = $itemToPack instanceof ConstrainedPlacementItem ? $this->getPackedItemList() : new PackedItemList(); // don't calculate it if not going to be used

        $orientatedItemDecision = $this->orientatedItemFactory->getBestOrientation($itemToPack, $prevOrientatedItem, $nextItems, $isLastItem, $maxWidth, $maxLength, $maxDepth, $rowLength, $x, $y, $z, $prevPackedItemList);

        return $orientatedItemDecision;
    }

    /**
     * Figure out if we can stack the next item vertically on top of this rather than side by side
     * Used when we've packed a tall item, and have just put a shorter one next to it.
     *
     * @param PackedLayer     $layer
     * @param PackedItem|null $prevItem
     * @param ItemList        $nextItems
     * @param int             $maxWidth
     * @param int             $maxLength
     * @param int             $maxDepth
     * @param int             $x
     * @param int             $y
     * @param int             $z
     */
    protected function tryAndStackItemsIntoSpace(
        PackedLayer $layer,
        ?PackedItem $prevItem,
        ItemList $nextItems,
        int $maxWidth,
        int $maxLength,
        int $maxDepth,
        int $x,
        int $y,
        int $z,
        int $rowLength
    ): void {
        while (count($this->items) > 0 && $this->checkNonDimensionalConstraints($this->items->top())) {
            $stackedItem = $this->getOrientationForItem(
                $this->items->top(),
                $prevItem,
                $nextItems,
                $this->items->count() === 1,
                $maxWidth,
                $maxLength,
                $maxDepth,
                $rowLength,
                $x,
                $y,
                $z
            );
            if ($stackedItem) {
                $this->remainingWeight -= $this->items->top()->getWeight();
                $layer->insert(PackedItem::fromOrientatedItem($stackedItem, $x, $y, $z));
                $this->items->extract();
                $maxDepth -= $stackedItem->getDepth();
                $z += $stackedItem->getDepth();
            } else {
                break;
            }
        }
    }

    /**
     * As well as purely dimensional constraints, there are other constraints that need to be met
     * e.g. weight limits or item-specific restrictions (e.g. max <x> batteries per box).
     *
     * @param Item $itemToPack
     *
     * @return bool
     */
    protected function checkNonDimensionalConstraints(Item $itemToPack): bool
    {
        $weightOK = $itemToPack->getWeight() <= $this->remainingWeight;

        if ($itemToPack instanceof ConstrainedItem) {
            return $weightOK && $itemToPack->canBePackedInBox($this->getPackedItemList(), $this->box);
        }

        return $weightOK;
    }

    /**
     * Reintegrate skipped items into main list.
     */
    protected function rebuildItemList(): void
    {
        $this->items = ItemList::fromArray(array_merge($this->skippedItems, iterator_to_array($this->items)), true);
        /*while(count($this->items) > 0) {
            $newList->insert($this->items->extract());
        }
        $this->items = $newList;*/
        $this->skippedItems = [];
    }

    /**
     * Swap back width/length of the packed items to match orientation of the box if needed.
     */
    protected function rotateLayersNinetyDegrees(): void
    {
        foreach ($this->layers as $i => $originalLayer) {
            $newLayer = new PackedLayer();
            foreach ($originalLayer->getItems() as $item) {
                $packedItem = new PackedItem($item->getItem(), $item->getY(), $item->getX(), $item->getZ(), $item->getLength(), $item->getWidth(), $item->getDepth());
                $newLayer->insert($packedItem);
            }
            $this->layers[$i] = $newLayer;
        }
    }

    /**
     * Are there items left to pack?
     *
     * @return bool
     */
    protected function hasItemsLeftToPack(): bool
    {
        return count($this->skippedItems) + count($this->items) > 0;
    }

    /**
     * Generate a single list of items packed.
     *
     * @return PackedItemList
     */
    protected function getPackedItemList(): PackedItemList
    {
        $packedItemList = new PackedItemList();
        foreach ($this->layers as $layer) {
            foreach ($layer->getItems() as $packedItem) {
                $packedItemList->insert($packedItem);
            }
        }

        return $packedItemList;
    }

    /**
     * Return the current packed depth.
     *
     * @return int
     */
    protected function getCurrentPackedDepth(): int
    {
        $depth = 0;
        foreach ($this->layers as $layer) {
            $depth += $layer->getDepth();
        }

        return $depth;
    }
}


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\LoggerInterface;
14		use Psr\Log\NullLogger;
15		use function count;
16		use function max;
17		use function min;
18
19		/**
20		* Actual packer.
21		*
22		* @author Doug Wright
23		*/
24		class VolumePacker implements LoggerAwareInterface
25		{
26		/**
27		* The logger instance.
28		*
29		* @var LoggerInterface
30		*/
31		protected $logger;
32
33		/**
34		* Box to pack items into.
35		*
36		* @var Box
37		*/
38		protected $box;
39
40		/**
41		* @var int
42		*/
43		protected $boxWidth;
44
45		/**
46		* @var int
47		*/
48		protected $boxLength;
49
50		/**
51		* List of items to be packed.
52		*
53		* @var ItemList
54		*/
55		protected $items;
56
57		/**
58		* List of items temporarily skipped to be packed.
59		*
60		* @var array
61		*/
62		protected $skippedItems = [];
63
64		/**
65		* Remaining weight capacity of the box.
66		*
67		* @var int
68		*/
69		protected $remainingWeight;
70
71		/**
72		* Whether the box was rotated for packing.
73		*
74		* @var bool
75		*/
76		protected $boxRotated = false;
77
78		/**
79		* @var PackedLayer[]
80		*/
81		protected $layers = [];
82
83		/**
84		* Whether the packer is in look-ahead mode (i.e. working ahead of the main packing).
85		*
86		* @var bool
87		*/
88		protected $lookAheadMode = false;
89
90		/**
91		* @var OrientatedItemFactory
92		*/
93		private $orientatedItemFactory;
94
95		/**
96		* Constructor.
97		*
98		* @param Box $box
99		* @param ItemList $items
100		*/
101	39	public function __construct(Box $box, ItemList $items)
102		{
103	39	$this->box = $box;
104	39	$this->items = $items;
105
106	39	$this->boxWidth = max($this->box->getInnerWidth(), $this->box->getInnerLength());
107	39	$this->boxLength = min($this->box->getInnerWidth(), $this->box->getInnerLength());
108	39	$this->remainingWeight = $this->box->getMaxWeight() - $this->box->getEmptyWeight();
109	39	$this->logger = new NullLogger();
110
111		// we may have just rotated the box for packing purposes, record if we did
112	39	if ($this->box->getInnerWidth() !== $this->boxWidth \|\| $this->box->getInnerLength() !== $this->boxLength) {
113	13	$this->boxRotated = true;
114		}
115
116	39	$this->orientatedItemFactory = new OrientatedItemFactory($this->box);
117	39	}
118
119		/**
120		* Sets a logger.
121		*
122		* @param LoggerInterface $logger
123		*/
124	12	public function setLogger(LoggerInterface $logger): void
125		{
126	12	$this->logger = $logger;
127	12	$this->orientatedItemFactory->setLogger($logger);
128	12	}
129
130		/**
131		* @internal
132		* @param bool $lookAhead
133		*/
134	13	public function setLookAheadMode(bool $lookAhead): void
135		{
136	13	$this->lookAheadMode = $lookAhead;
137	13	}
138
139		/**
140		* Pack as many items as possible into specific given box.
141		*
142		* @return PackedBox packed box
143		*/
144	39	public function pack(): PackedBox
145		{
146	39	$this->logger->debug("[EVALUATING BOX] {$this->box->getReference()}", ['box' => $this->box]);
147
148	39	while (count($this->items) > 0) {
149	39	$layerStartDepth = $this->getCurrentPackedDepth();
150	39	$this->packLayer($layerStartDepth, $this->boxWidth, $this->boxLength, $this->box->getInnerDepth() - $layerStartDepth);
151		}
152
153	39	if ($this->boxRotated) {
154	13	$this->rotateLayersNinetyDegrees();
155		}
156
157	39	if (!$this->lookAheadMode) {
158	39	$this->stabiliseLayers();
159		}
160
161	39	$this->logger->debug('done with this box');
162
163	39	return new PackedBox($this->box, $this->getPackedItemList());
164		}
165
166		/**
167		* Pack items into an individual vertical layer.
168		*
169		* @param int $startDepth
170		* @param int $widthLeft
171		* @param int $lengthLeft
172		* @param int $depthLeft
173		*/
174	39	protected function packLayer(int $startDepth, int $widthLeft, int $lengthLeft, int $depthLeft): void
175		{
176	39	$this->layers[] = $layer = new PackedLayer();
177	39	$prevItem = null;
178	39	$x = $y = $rowWidth = $rowLength = $layerDepth = 0;
179
180	39	while (count($this->items) > 0) {
181	39	$itemToPack = $this->items->extract();
182
183		//skip items that are simply too heavy or too large
184	39	if (!$this->checkNonDimensionalConstraints($itemToPack)) {
185	3	continue;
186		}
187
188	39	$orientatedItem = $this->getOrientationForItem($itemToPack, $prevItem, $this->items, !$this->hasItemsLeftToPack(), $widthLeft, $lengthLeft, $depthLeft, $rowLength, $x, $y, $startDepth);
189
190	39	if ($orientatedItem instanceof OrientatedItem) {
191	38	$packedItem = PackedItem::fromOrientatedItem($orientatedItem, $x, $y, $startDepth);
192	38	$layer->insert($packedItem);
193	38	$this->remainingWeight -= $orientatedItem->getItem()->getWeight();
194	38	$widthLeft -= $orientatedItem->getWidth();
195
196	38	$rowWidth += $orientatedItem->getWidth();
197	38	$rowLength = max($rowLength, $orientatedItem->getLength());
198	38	$layerDepth = max($layerDepth, $orientatedItem->getDepth());
199
200		//allow items to be stacked in place within the same footprint up to current layer depth
201	38	$stackableDepth = $layerDepth - $orientatedItem->getDepth();
202	38	$this->tryAndStackItemsIntoSpace($layer, $prevItem, $this->items, $orientatedItem->getWidth(), $orientatedItem->getLength(), $stackableDepth, $x, $y, $startDepth + $orientatedItem->getDepth(), $rowLength);
203	38	$x += $orientatedItem->getWidth();
204
205	38	$prevItem = $packedItem;
206	38	if (count($this->items) === 0) {
207	38	$this->rebuildItemList();
208		}
209	34	} elseif (count($layer->getItems()) === 0) { // zero items on layer
210	17	$this->logger->debug("doesn't fit on layer even when empty, skipping for good");
211	17	continue;
212	32	} elseif ($widthLeft > 0 && count($this->items) > 0) { // skip for now, move on to the next item
213	27	$this->logger->debug("doesn't fit, skipping for now");
214	27	$this->skippedItems[] = $itemToPack;
215	32	} elseif ($x > 0 && $lengthLeft >= min($itemToPack->getWidth(), $itemToPack->getLength(), $itemToPack->getDepth())) {
216	32	$this->logger->debug('No more fit in width wise, resetting for new row');
217	32	$widthLeft += $rowWidth;
218	32	$lengthLeft -= $rowLength;
219	32	$y += $rowLength;
220	32	$x = $rowWidth = $rowLength = 0;
221	32	$this->skippedItems[] = $itemToPack;
222	32	$this->rebuildItemList();
223	32	$prevItem = null;
224	32	continue;
225		} else {
226	29	$this->logger->debug('no items fit, so starting next vertical layer');
227	29	$this->skippedItems[] = $itemToPack;
228	29	$this->rebuildItemList();
229	29	return;
230		}
231		}
232	39	}
233
234		/**
235		* During packing, it is quite possible that layers have been created that aren't physically stable
236		* i.e. they overhang the ones below.
237		*
238		* This function reorders them so that the ones with the greatest surface area are placed at the bottom
239		*/
240	39	public function stabiliseLayers(): void
241		{
242	39	$stabiliser = new LayerStabiliser();
243	39	$this->layers = $stabiliser->stabilise($this->layers);
244	39	}
245
246		/**
247		* @param Item $itemToPack
248		* @param PackedItem\|null $prevItem
249		* @param ItemList $nextItems
250		* @param bool $isLastItem
251		* @param int $maxWidth
252		* @param int $maxLength
253		* @param int $maxDepth
254		* @param int $rowLength
255		* @param int $x
256		* @param int $y
257		* @param int $z
258		*
259		* @return OrientatedItem\|null
260		*/
261	39	protected function getOrientationForItem(
262		Item $itemToPack,
263		?PackedItem $prevItem,
264		ItemList $nextItems,
265		bool $isLastItem,
266		int $maxWidth,
267		int $maxLength,
268		int $maxDepth,
269		int $rowLength,
270		int $x,
271		int $y,
272		int $z
273		): ?OrientatedItem {
274	39	$this->logger->debug(
275	39	"evaluating item {$itemToPack->getDescription()} for fit",
276		[
277	39	'item' => $itemToPack,
278		'space' => [
279	39	'maxWidth' => $maxWidth,
280	39	'maxLength' => $maxLength,
281	39	'maxDepth' => $maxDepth,
282		],
283		]
284		);
285
286	39	$prevOrientatedItem = $prevItem ? $prevItem->toOrientatedItem() : null;
287	39	$prevPackedItemList = $itemToPack instanceof ConstrainedPlacementItem ? $this->getPackedItemList() : new PackedItemList(); // don't calculate it if not going to be used
288
289	39	$orientatedItemDecision = $this->orientatedItemFactory->getBestOrientation($itemToPack, $prevOrientatedItem, $nextItems, $isLastItem, $maxWidth, $maxLength, $maxDepth, $rowLength, $x, $y, $z, $prevPackedItemList);
290
291	39	return $orientatedItemDecision;
292		}
293
294		/**
295		* Figure out if we can stack the next item vertically on top of this rather than side by side
296		* Used when we've packed a tall item, and have just put a shorter one next to it.
297		*
298		* @param PackedLayer $layer
299		* @param PackedItem\|null $prevItem
300		* @param ItemList $nextItems
301		* @param int $maxWidth
302		* @param int $maxLength
303		* @param int $maxDepth
304		* @param int $x
305		* @param int $y
306		* @param int $z
307		*/
308	38	protected function tryAndStackItemsIntoSpace(
309		PackedLayer $layer,
310		?PackedItem $prevItem,
311		ItemList $nextItems,
312		int $maxWidth,
313		int $maxLength,
314		int $maxDepth,
315		int $x,
316		int $y,
317		int $z,
318		int $rowLength
319		): void {
320	38	while (count($this->items) > 0 && $this->checkNonDimensionalConstraints($this->items->top())) {
321	37	$stackedItem = $this->getOrientationForItem(
322	37	$this->items->top(),
323		$prevItem,
324		$nextItems,
325	37	$this->items->count() === 1,
326		$maxWidth,
327		$maxLength,
328		$maxDepth,
329		$rowLength,
330		$x,
331		$y,
332		$z
333		);
334	37	if ($stackedItem) {
335	5	$this->remainingWeight -= $this->items->top()->getWeight();
336	5	$layer->insert(PackedItem::fromOrientatedItem($stackedItem, $x, $y, $z));
337	5	$this->items->extract();
338	5	$maxDepth -= $stackedItem->getDepth();
339	5	$z += $stackedItem->getDepth();
340		} else {
341	37	break;
342		}
343		}
344	38	}
345
346		/**
347		* As well as purely dimensional constraints, there are other constraints that need to be met
348		* e.g. weight limits or item-specific restrictions (e.g. max <x> batteries per box).
349		*
350		* @param Item $itemToPack
351		*
352		* @return bool
353		*/
354	39	protected function checkNonDimensionalConstraints(Item $itemToPack): bool
355		{
356	39	$weightOK = $itemToPack->getWeight() <= $this->remainingWeight;
357
358	39	if ($itemToPack instanceof ConstrainedItem) {
359	1	return $weightOK && $itemToPack->canBePackedInBox($this->getPackedItemList(), $this->box);
360		}
361
362	39	return $weightOK;
363		}
364
365		/**
366		* Reintegrate skipped items into main list.
367		*/
368	38	protected function rebuildItemList(): void
369		{
370	38	$this->items = ItemList::fromArray(array_merge($this->skippedItems, iterator_to_array($this->items)), true);
371		/*while(count($this->items) > 0) {
372		$newList->insert($this->items->extract());
373		}
374		$this->items = $newList;*/
375	38	$this->skippedItems = [];
376	38	}
377
378		/**
379		* Swap back width/length of the packed items to match orientation of the box if needed.
380		*/
381	13	protected function rotateLayersNinetyDegrees(): void
382		{
383	13	foreach ($this->layers as $i => $originalLayer) {
384	13	$newLayer = new PackedLayer();
385	13	foreach ($originalLayer->getItems() as $item) {
386	13	$packedItem = new PackedItem($item->getItem(), $item->getY(), $item->getX(), $item->getZ(), $item->getLength(), $item->getWidth(), $item->getDepth());
387	13	$newLayer->insert($packedItem);
388		}
389	13	$this->layers[$i] = $newLayer;
390		}
391	13	}
392
393		/**
394		* Are there items left to pack?
395		*
396		* @return bool
397		*/
398	39	protected function hasItemsLeftToPack(): bool
399		{
400	39	return count($this->skippedItems) + count($this->items) > 0;
401		}
402
403		/**
404		* Generate a single list of items packed.
405		*
406		* @return PackedItemList
407		*/
408	39	protected function getPackedItemList(): PackedItemList
409		{
410	39	$packedItemList = new PackedItemList();
411	39	foreach ($this->layers as $layer) {
412	39	foreach ($layer->getItems() as $packedItem) {
413	39	$packedItemList->insert($packedItem);
414		}
415		}
416
417	39	return $packedItemList;
418		}
419
420		/**
421		* Return the current packed depth.
422		*
423		* @return int
424		*/
425	39	protected function getCurrentPackedDepth(): int
426		{
427	39	$depth = 0;
428	39	foreach ($this->layers as $layer) {
429	29	$depth += $layer->getDepth();
430		}
431
432	39	return $depth;
433		}
434		}
435

dvdoug / BoxPacker

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