VolumePacker::__construct() - Code Metrics - Inspection of "#164 Skip layerstablisation phase when doing looka..." - dvdoug/BoxPacker - Measure and Improve Code Quality continuously with Scrutinizer

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Push — master ( 738fab...86bf03 )

by Doug

created 2019-07-08 15:47 UTC

VolumePacker::__construct() A

↳ Parent: VolumePacker

Complexity

Conditions	3
Paths	2

Size

Total Lines	14
Code Lines	9

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	10
CRAP Score	3

Importance

Changes

Metric	Value
cc	3
eloc	9
nc	2
nop	2
dl	0
loc	14
ccs	10
cts	10
cp	1
crap	3
rs	9.9666
c	0
b	0
f	0

<?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\NullLogger;
use function count;
use function max;
use function min;

/**
 * Actual packer.
 *
 * @author Doug Wright
 */
class VolumePacker implements LoggerAwareInterface
{
    use LoggerAwareTrait;

    /**
     * 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 ItemList
     */
    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;

    /**
     * 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->skippedItems = new ItemList();
        $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;
        }
    }

    /**
     * @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 (!$this->checkConstraints($itemToPack)) {
                $this->rebuildItemList();
                continue;
            }

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

            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;
                $this->rebuildItemList();
            } elseif (count($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");
                $this->skippedItems->insert($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;
                $this->rebuildItemList($itemToPack);
                $prevItem = null;
                continue;
            } else {
                $this->logger->debug('no items fit, so starting next vertical layer');
                $this->rebuildItemList($itemToPack);

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

        $prevOrientatedItem = $prevItem ? $prevItem->toOrientatedItem() : null;

        $orientatedItemFactory = new OrientatedItemFactory($this->box);
        $orientatedItemFactory->setLogger($this->logger);
        $orientatedItemDecision = $orientatedItemFactory->getBestOrientation($itemToPack, $prevOrientatedItem, $nextItems, $isLastItem, $maxWidth, $maxLength, $maxDepth, $rowLength);

        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,
                $rowLength
            );
            if ($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;
            }
        }
    }

    /**
     * Check item generally fits into box.
     *
     * @param Item $itemToPack
     *
     * @return bool
     */
    protected function checkConstraints(
        Item $itemToPack
    ): bool {
        return $this->checkNonDimensionalConstraints($itemToPack) &&
               $this->checkDimensionalConstraints($itemToPack);
    }

    /**
     * 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;
    }

    /**
     * Check the item physically fits in the box (at all).
     *
     * @param Item $itemToPack
     *
     * @return bool
     */
    protected function checkDimensionalConstraints(Item $itemToPack): bool
    {
        $orientatedItemFactory = new OrientatedItemFactory($this->box);
        $orientatedItemFactory->setLogger($this->logger);

        return (bool) $orientatedItemFactory->getPossibleOrientationsInEmptyBox($itemToPack);
    }

    /**
     * Reintegrate skipped items into main list.
     *
     * @param Item|null $currentItem item from current iteration
     */
    protected function rebuildItemList(?Item $currentItem = null): void
    {
        if (count($this->items) === 0) {
            $this->items = $this->skippedItems;
            $this->skippedItems = new ItemList();
        }

        if ($currentItem instanceof Item) {
            $this->items->insert($currentItem);
        }
    }

    /**
     * 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\NullLogger;
14		use function count;
15		use function max;
16		use function min;
17
18		/**
19		* Actual packer.
20		*
21		* @author Doug Wright
22		*/
23		class VolumePacker implements LoggerAwareInterface
24		{
25		use LoggerAwareTrait;
26
27		/**
28		* Box to pack items into.
29		*
30		* @var Box
31		*/
32		protected $box;
33
34		/**
35		* @var int
36		*/
37		protected $boxWidth;
38
39		/**
40		* @var int
41		*/
42		protected $boxLength;
43
44		/**
45		* List of items to be packed.
46		*
47		* @var ItemList
48		*/
49		protected $items;
50
51		/**
52		* List of items temporarily skipped to be packed.
53		*
54		* @var ItemList
55		*/
56		protected $skippedItems;
57
58		/**
59		* Remaining weight capacity of the box.
60		*
61		* @var int
62		*/
63		protected $remainingWeight;
64
65		/**
66		* Whether the box was rotated for packing.
67		*
68		* @var bool
69		*/
70		protected $boxRotated = false;
71
72		/**
73		* @var PackedLayer[]
74		*/
75		protected $layers = [];
76
77		/**
78		* Whether the packer is in look-ahead mode (i.e. working ahead of the main packing).
79		*
80		* @var bool
81		*/
82		protected $lookAheadMode = false;
83
84		/**
85		* Constructor.
86		*
87		* @param Box $box
88		* @param ItemList $items
89		*/
90	33	public function __construct(Box $box, ItemList $items)
91		{
92	33	$this->box = $box;
93	33	$this->items = $items;
94
95	33	$this->boxWidth = max($this->box->getInnerWidth(), $this->box->getInnerLength());
96	33	$this->boxLength = min($this->box->getInnerWidth(), $this->box->getInnerLength());
97	33	$this->remainingWeight = $this->box->getMaxWeight() - $this->box->getEmptyWeight();
98	33	$this->skippedItems = new ItemList();
99	33	$this->logger = new NullLogger();
100
101		// we may have just rotated the box for packing purposes, record if we did
102	33	if ($this->box->getInnerWidth() !== $this->boxWidth \|\| $this->box->getInnerLength() !== $this->boxLength) {
103	9	$this->boxRotated = true;
104		}
105	33	}
106
107		/**
108		* @internal
109		* @param bool $lookAhead
110		*/
111	9	public function setLookAheadMode(bool $lookAhead): void
112		{
113	9	$this->lookAheadMode = $lookAhead;
114	9	}
115
116		/**
117		* Pack as many items as possible into specific given box.
118		*
119		* @return PackedBox packed box
120		*/
121	33	public function pack(): PackedBox
122		{
123	33	$this->logger->debug("[EVALUATING BOX] {$this->box->getReference()}", ['box' => $this->box]);
124
125	33	while (count($this->items) > 0) {
126	33	$layerStartDepth = $this->getCurrentPackedDepth();
127	33	$this->packLayer($layerStartDepth, $this->boxWidth, $this->boxLength, $this->box->getInnerDepth() - $layerStartDepth);
128		}
129
130	33	if ($this->boxRotated) {
131	9	$this->rotateLayersNinetyDegrees();
132		}
133
134	33	if (!$this->lookAheadMode) {
135	33	$this->stabiliseLayers();
136		}
137
138	33	$this->logger->debug('done with this box');
139
140	33	return new PackedBox($this->box, $this->getPackedItemList());
141		}
142
143		/**
144		* Pack items into an individual vertical layer.
145		*
146		* @param int $startDepth
147		* @param int $widthLeft
148		* @param int $lengthLeft
149		* @param int $depthLeft
150		*/
151	33	protected function packLayer(int $startDepth, int $widthLeft, int $lengthLeft, int $depthLeft): void
152		{
153	33	$this->layers[] = $layer = new PackedLayer();
154	33	$prevItem = null;
155	33	$x = $y = $rowWidth = $rowLength = $layerDepth = 0;
156
157	33	while (count($this->items) > 0) {
158	33	$itemToPack = $this->items->extract();
159
160		//skip items that are simply too heavy or too large
161	33	if (!$this->checkConstraints($itemToPack)) {
162	11	$this->rebuildItemList();
163	11	continue;
164		}
165
166	32	$orientatedItem = $this->getOrientationForItem($itemToPack, $prevItem, $this->items, $this->hasItemsLeftToPack(), $widthLeft, $lengthLeft, $depthLeft, $rowLength);
167
168	32	if ($orientatedItem instanceof OrientatedItem) {
169	32	$packedItem = PackedItem::fromOrientatedItem($orientatedItem, $x, $y, $startDepth);
170	32	$layer->insert($packedItem);
171	32	$this->remainingWeight -= $orientatedItem->getItem()->getWeight();
172	32	$widthLeft -= $orientatedItem->getWidth();
173
174	32	$rowWidth += $orientatedItem->getWidth();
175	32	$rowLength = max($rowLength, $orientatedItem->getLength());
176	32	$layerDepth = max($layerDepth, $orientatedItem->getDepth());
177
178		//allow items to be stacked in place within the same footprint up to current layer depth
179	32	$stackableDepth = $layerDepth - $orientatedItem->getDepth();
180	32	$this->tryAndStackItemsIntoSpace($layer, $prevItem, $this->items, $orientatedItem->getWidth(), $orientatedItem->getLength(), $stackableDepth, $x, $y, $startDepth + $orientatedItem->getDepth(), $rowLength);
181	32	$x += $orientatedItem->getWidth();
182
183	32	$prevItem = $packedItem;
184	32	$this->rebuildItemList();
185	25	} elseif (count($layer->getItems()) === 0) { // zero items on layer
186	8	$this->logger->debug("doesn't fit on layer even when empty, skipping for good");
187	8	continue;
188	25	} elseif ($widthLeft > 0 && count($this->items) > 0) { // skip for now, move on to the next item
189	20	$this->logger->debug("doesn't fit, skipping for now");
190	20	$this->skippedItems->insert($itemToPack);
191	25	} elseif ($x > 0 && $lengthLeft >= min($itemToPack->getWidth(), $itemToPack->getLength(), $itemToPack->getDepth())) {
192	25	$this->logger->debug('No more fit in width wise, resetting for new row');
193	25	$widthLeft += $rowWidth;
194	25	$lengthLeft -= $rowLength;
195	25	$y += $rowLength;
196	25	$x = $rowWidth = $rowLength = 0;
197	25	$this->rebuildItemList($itemToPack);
198	25	$prevItem = null;
199	25	continue;
200		} else {
201	22	$this->logger->debug('no items fit, so starting next vertical layer');
202	22	$this->rebuildItemList($itemToPack);
203
204	22	return;
205		}
206		}
207	33	}
208
209		/**
210		* During packing, it is quite possible that layers have been created that aren't physically stable
211		* i.e. they overhang the ones below.
212		*
213		* This function reorders them so that the ones with the greatest surface area are placed at the bottom
214		*/
215	33	public function stabiliseLayers(): void
216		{
217	33	$stabiliser = new LayerStabiliser();
218	33	$this->layers = $stabiliser->stabilise($this->layers);
219	33	}
220
221		/**
222		* @param Item $itemToPack
223		* @param PackedItem\|null $prevItem
224		* @param ItemList $nextItems
225		* @param bool $isLastItem
226		* @param int $maxWidth
227		* @param int $maxLength
228		* @param int $maxDepth
229		* @param int $rowLength
230		*
231		* @return OrientatedItem\|null
232		*/
233	32	protected function getOrientationForItem(
234		Item $itemToPack,
235		?PackedItem $prevItem,
236		ItemList $nextItems,
237		bool $isLastItem,
238		int $maxWidth,
239		int $maxLength,
240		int $maxDepth,
241		int $rowLength
242		): ?OrientatedItem {
243	32	$this->logger->debug(
244	32	"evaluating item {$itemToPack->getDescription()} for fit",
245		[
246	32	'item' => $itemToPack,
247		'space' => [
248	32	'maxWidth' => $maxWidth,
249	32	'maxLength' => $maxLength,
250	32	'maxDepth' => $maxDepth,
251		],
252		]
253		);
254
255	32	$prevOrientatedItem = $prevItem ? $prevItem->toOrientatedItem() : null;
256
257	32	$orientatedItemFactory = new OrientatedItemFactory($this->box);
258	32	$orientatedItemFactory->setLogger($this->logger);
259	32	$orientatedItemDecision = $orientatedItemFactory->getBestOrientation($itemToPack, $prevOrientatedItem, $nextItems, $isLastItem, $maxWidth, $maxLength, $maxDepth, $rowLength);
260
261	32	return $orientatedItemDecision;
262		}
263
264		/**
265		* Figure out if we can stack the next item vertically on top of this rather than side by side
266		* Used when we've packed a tall item, and have just put a shorter one next to it.
267		*
268		* @param PackedLayer $layer
269		* @param PackedItem\|null $prevItem
270		* @param ItemList $nextItems
271		* @param int $maxWidth
272		* @param int $maxLength
273		* @param int $maxDepth
274		* @param int $x
275		* @param int $y
276		* @param int $z
277		*/
278	32	protected function tryAndStackItemsIntoSpace(
279		PackedLayer $layer,
280		?PackedItem $prevItem,
281		ItemList $nextItems,
282		int $maxWidth,
283		int $maxLength,
284		int $maxDepth,
285		int $x,
286		int $y,
287		int $z,
288		int $rowLength
289		): void {
290	32	while (count($this->items) > 0 && $this->checkNonDimensionalConstraints($this->items->top())) {
291	31	$stackedItem = $this->getOrientationForItem(
292	31	$this->items->top(),
293	31	$prevItem,
294	31	$nextItems,
295	31	$this->items->count() === 1,
296	31	$maxWidth,
297	31	$maxLength,
298	31	$maxDepth,
299	31	$rowLength
300		);
301	31	if ($stackedItem) {
302	2	$this->remainingWeight -= $this->items->top()->getWeight();
303	2	$layer->insert(PackedItem::fromOrientatedItem($stackedItem, $x, $y, $z));
304	2	$this->items->extract();
305	2	$maxDepth -= $stackedItem->getDepth();
306	2	$z += $stackedItem->getDepth();
307		} else {
308	31	break;
309		}
310		}
311	32	}
312
313		/**
314		* Check item generally fits into box.
315		*
316		* @param Item $itemToPack
317		*
318		* @return bool
319		*/
320	33	protected function checkConstraints(
321		Item $itemToPack
322		): bool {
323	33	return $this->checkNonDimensionalConstraints($itemToPack) &&
324	33	$this->checkDimensionalConstraints($itemToPack);
325		}
326
327		/**
328		* As well as purely dimensional constraints, there are other constraints that need to be met
329		* e.g. weight limits or item-specific restrictions (e.g. max <x> batteries per box).
330		*
331		* @param Item $itemToPack
332		*
333		* @return bool
334		*/
335	33	protected function checkNonDimensionalConstraints(Item $itemToPack): bool
336		{
337	33	$weightOK = $itemToPack->getWeight() <= $this->remainingWeight;
338
339	33	if ($itemToPack instanceof ConstrainedItem) {
340	1	return $weightOK && $itemToPack->canBePackedInBox($this->getPackedItemList(), $this->box);
341		}
342
343	33	return $weightOK;
344		}
345
346		/**
347		* Check the item physically fits in the box (at all).
348		*
349		* @param Item $itemToPack
350		*
351		* @return bool
352		*/
353	33	protected function checkDimensionalConstraints(Item $itemToPack): bool
354		{
355	33	$orientatedItemFactory = new OrientatedItemFactory($this->box);
356	33	$orientatedItemFactory->setLogger($this->logger);
357
358	33	return (bool) $orientatedItemFactory->getPossibleOrientationsInEmptyBox($itemToPack);
359		}
360
361		/**
362		* Reintegrate skipped items into main list.
363		*
364		* @param Item\|null $currentItem item from current iteration
365		*/
366	33	protected function rebuildItemList(?Item $currentItem = null): void
367		{
368	33	if (count($this->items) === 0) {
369	33	$this->items = $this->skippedItems;
370	33	$this->skippedItems = new ItemList();
371		}
372
373	33	if ($currentItem instanceof Item) {
374	25	$this->items->insert($currentItem);
375		}
376	33	}
377
378		/**
379		* Swap back width/length of the packed items to match orientation of the box if needed.
380		*/
381	9	protected function rotateLayersNinetyDegrees(): void
382		{
383	9	foreach ($this->layers as $i => $originalLayer) {
384	9	$newLayer = new PackedLayer();
385	9	foreach ($originalLayer->getItems() as $item) {
386	9	$packedItem = new PackedItem($item->getItem(), $item->getY(), $item->getX(), $item->getZ(), $item->getLength(), $item->getWidth(), $item->getDepth());
387	9	$newLayer->insert($packedItem);
388		}
389	9	$this->layers[$i] = $newLayer;
390		}
391	9	}
392
393		/**
394		* Are there items left to pack?
395		*
396		* @return bool
397		*/
398	32	protected function hasItemsLeftToPack(): bool
399		{
400	32	return count($this->skippedItems) + count($this->items) === 0;
401		}
402
403		/**
404		* Generate a single list of items packed.
405		*
406		* @return PackedItemList
407		*/
408	33	protected function getPackedItemList(): PackedItemList
409		{
410	33	$packedItemList = new PackedItemList();
411	33	foreach ($this->layers as $layer) {
412	33	foreach ($layer->getItems() as $packedItem) {
413	33	$packedItemList->insert($packedItem);
414		}
415		}
416
417	33	return $packedItemList;
418		}
419
420		/**
421		* Return the current packed depth.
422		*
423		* @return int
424		*/
425	33	protected function getCurrentPackedDepth(): int
426		{
427	33	$depth = 0;
428	33	foreach ($this->layers as $layer) {
429	22	$depth += $layer->getDepth();
430		}
431
432	33	return $depth;
433		}
434		}
435

dvdoug / BoxPacker

Push — master ( 738fab...86bf03 )

VolumePacker::__construct() A

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