VolumePacker::getCurrentPackedDepth() - Code Metrics - Inspection of "Rework weight redistribution to not be a single hu..." - dvdoug/BoxPacker - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Push — weight_redistributor ( 060e5b...8de9a1 )

by Doug

created 2018-01-07 14:34 UTC

VolumePacker::getCurrentPackedDepth() A

↳ Parent: VolumePacker

Complexity

Conditions	2
Paths	2

Size

Total Lines	9
Code Lines	5

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	5
CRAP Score	2

Importance

Changes

Metric	Value
dl	0
loc	9
ccs	5
cts	5
cp	1
rs	9.6666
c	0
b	0
f	0
cc	2
eloc	5
nc	2
nop	0
crap	2

<?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;

/**
 * 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 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 = [];

    /**
     * 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;
        }
    }

    /**
     * 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()}");

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

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

        $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();
            $nextItem = $this->getNextItem();

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

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

            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, $nextItem, $orientatedItem->getWidth(), $orientatedItem->getLength(), $stackableDepth, $x, $y, $startDepth + $orientatedItem->getDepth());
                $x += $orientatedItem->getWidth();

                $prevItem = $packedItem;
                $this->rebuildItemList();
            } else {
                if (count($layer->getItems()) === 0) { // zero items on layer
                    $this->logger->debug("doesn't fit on layer even when empty, skipping for good");
                    continue;
                } elseif (count($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())) {
                    $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 Item|null       $nextItem
     * @param bool            $isLastItem
     * @param int             $maxWidth
     * @param int             $maxLength
     * @param int             $maxDepth
     *
     * @return OrientatedItem|null
     */
    protected function getOrientationForItem(
        Item $itemToPack,
        ?PackedItem $prevItem,
        ?Item $nextItem,
        bool $isLastItem,
        int $maxWidth,
        int $maxLength,
        int $maxDepth
    ): ?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();
        $orientatedItemFactory->setLogger($this->logger);
        $orientatedItem = $orientatedItemFactory->getBestOrientation($this->box, $itemToPack, $prevOrientatedItem, $nextItem, $isLastItem, $maxWidth, $maxLength, $maxDepth);

        return $orientatedItem;
    }

    /**
     * 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 Item|null       $nextItem
     * @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,
        ?Item $nextItem,
        int $maxWidth,
        int $maxLength,
        int $maxDepth,
        int $x,
        int $y,
        int $z
    ): void {
        while (count($this->items) > 0 && $this->checkNonDimensionalConstraints($this->items->top())) {
            $stackedItem = $this->getOrientationForItem(
                $this->items->top(),
                $prevItem,
                $nextItem,
                $this->items->count() === 1,
                $maxWidth,
                $maxLength,
                $maxDepth
            );
            if ($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();
        $orientatedItemFactory->setLogger($this->logger);

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

    /**
     * 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;
    }

    /**
     * Return next item in line for packing.
     *
     * @return Item|null
     */
    protected function getNextItem(): ?Item
    {
        return count($this->items) ? $this->items->top() : null;
    }

    /**
     * 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
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		/**
75		* Constructor.
76		*
77		* @param Box $box
78		* @param ItemList $items
79		*/
80	27	public function __construct(Box $box, ItemList $items)
81		{
82	27	$this->box = $box;
83	27	$this->items = $items;
84
85	27	$this->boxWidth = max($this->box->getInnerWidth(), $this->box->getInnerLength());
86	27	$this->boxLength = min($this->box->getInnerWidth(), $this->box->getInnerLength());
87	27	$this->remainingWeight = $this->box->getMaxWeight() - $this->box->getEmptyWeight();
88	27	$this->skippedItems = new ItemList();
89	27	$this->logger = new NullLogger();
90
91		// we may have just rotated the box for packing purposes, record if we did
92	27	if ($this->box->getInnerWidth() != $this->boxWidth \|\| $this->box->getInnerLength() != $this->boxLength) {
93	7	$this->boxRotated = true;
94		}
95	27	}
96
97		/**
98		* Pack as many items as possible into specific given box.
99		*
100		* @return PackedBox packed box
101		*/
102	27	public function pack(): PackedBox
103		{
104	27	$this->logger->debug("[EVALUATING BOX] {$this->box->getReference()}");
105
106	27	while (count($this->items) > 0) {
107	27	$layerStartDepth = $this->getCurrentPackedDepth();
108	27	$this->packLayer($layerStartDepth, $this->boxWidth, $this->boxLength, $this->box->getInnerDepth() - $layerStartDepth);
109		}
110
111	27	if ($this->boxRotated) {
112	7	$this->rotateLayersNinetyDegrees();
113		}
114
115	27	$this->stabiliseLayers();
116
117	27	$this->logger->debug('done with this box');
118
119	27	return new PackedBox($this->box, $this->getPackedItemList());
120		}
121
122		/**
123		* Pack items into an individual vertical layer.
124		*
125		* @param int $startDepth
126		* @param int $widthLeft
127		* @param int $lengthLeft
128		* @param int $depthLeft
129		*/
130	27	protected function packLayer(int $startDepth, int $widthLeft, int $lengthLeft, int $depthLeft): void
131		{
132	27	$this->layers[] = $layer = new PackedLayer();
133	27	$prevItem = null;
134	27	$x = $y = $rowWidth = $rowLength = $layerDepth = 0;
135
136	27	while (count($this->items) > 0) {
137	27	$itemToPack = $this->items->extract();
138	27	$nextItem = $this->getNextItem();
139
140		//skip items that are simply too heavy or too large
141	27	if (!$this->checkConstraints($itemToPack)) {
142	6	$this->rebuildItemList();
143	6	continue;
144		}
145
146	27	$orientatedItem = $this->getOrientationForItem($itemToPack, $prevItem, $nextItem, $this->hasItemsLeftToPack(), $widthLeft, $lengthLeft, $depthLeft);
147
148	27	if ($orientatedItem instanceof OrientatedItem) {
149	27	$packedItem = PackedItem::fromOrientatedItem($orientatedItem, $x, $y, $startDepth);
150	27	$layer->insert($packedItem);
151	27	$this->remainingWeight -= $orientatedItem->getItem()->getWeight();
152	27	$widthLeft -= $orientatedItem->getWidth();
153
154	27	$rowWidth += $orientatedItem->getWidth();
155	27	$rowLength = max($rowLength, $orientatedItem->getLength());
156	27	$layerDepth = max($layerDepth, $orientatedItem->getDepth());
157
158		//allow items to be stacked in place within the same footprint up to current layer depth
159	27	$stackableDepth = $layerDepth - $orientatedItem->getDepth();
160	27	$this->tryAndStackItemsIntoSpace($layer, $prevItem, $nextItem, $orientatedItem->getWidth(), $orientatedItem->getLength(), $stackableDepth, $x, $y, $startDepth + $orientatedItem->getDepth());
161	27	$x += $orientatedItem->getWidth();
162
163	27	$prevItem = $packedItem;
164	27	$this->rebuildItemList();
165		} else {
166	20	if (count($layer->getItems()) === 0) { // zero items on layer
167	1	$this->logger->debug("doesn't fit on layer even when empty, skipping for good");
168	1	continue;
169	20	} elseif (count($this->items) > 0) { // skip for now, move on to the next item
170	18	$this->logger->debug("doesn't fit, skipping for now");
171	18	$this->skippedItems->insert($itemToPack);
172	20	} elseif ($x > 0 && $lengthLeft >= min($itemToPack->getWidth(), $itemToPack->getLength())) {
173	20	$this->logger->debug('No more fit in width wise, resetting for new row');
174	20	$widthLeft += $rowWidth;
175	20	$lengthLeft -= $rowLength;
176	20	$y += $rowLength;
177	20	$x = $rowWidth = $rowLength = 0;
178	20	$this->rebuildItemList($itemToPack);
179	20	$prevItem = null;
180	20	continue;
181		} else {
182	13	$this->logger->debug('no items fit, so starting next vertical layer');
183	13	$this->rebuildItemList($itemToPack);
184
185	13	return;
186		}
187		}
188		}
189	27	}
190
191		/**
192		* During packing, it is quite possible that layers have been created that aren't physically stable
193		* i.e. they overhang the ones below.
194		*
195		* This function reorders them so that the ones with the greatest surface area are placed at the bottom
196		*/
197	27	public function stabiliseLayers(): void
198		{
199	27	$stabiliser = new LayerStabiliser();
200	27	$this->layers = $stabiliser->stabilise($this->layers);
201	27	}
202
203		/**
204		* @param Item $itemToPack
205		* @param PackedItem\|null $prevItem
206		* @param Item\|null $nextItem
207		* @param bool $isLastItem
208		* @param int $maxWidth
209		* @param int $maxLength
210		* @param int $maxDepth
211		*
212		* @return OrientatedItem\|null
213		*/
214	27	protected function getOrientationForItem(
215		Item $itemToPack,
216		?PackedItem $prevItem,
217		?Item $nextItem,
218		bool $isLastItem,
219		int $maxWidth,
220		int $maxLength,
221		int $maxDepth
222		): ?OrientatedItem {
223	27	$this->logger->debug(
224	27	"evaluating item {$itemToPack->getDescription()} for fit",
225		[
226	27	'item' => $itemToPack,
227		'space' => [
228	27	'maxWidth' => $maxWidth,
229	27	'maxLength' => $maxLength,
230	27	'maxDepth' => $maxDepth,
231		],
232		]
233		);
234
235	27	$prevOrientatedItem = $prevItem ? $prevItem->toOrientatedItem() : null;
236
237	27	$orientatedItemFactory = new OrientatedItemFactory();
238	27	$orientatedItemFactory->setLogger($this->logger);
239	27	$orientatedItem = $orientatedItemFactory->getBestOrientation($this->box, $itemToPack, $prevOrientatedItem, $nextItem, $isLastItem, $maxWidth, $maxLength, $maxDepth);
240
241	27	return $orientatedItem;
242		}
243
244		/**
245		* Figure out if we can stack the next item vertically on top of this rather than side by side
246		* Used when we've packed a tall item, and have just put a shorter one next to it.
247		*
248		* @param PackedLayer $layer
249		* @param PackedItem\|null $prevItem
250		* @param Item\|null $nextItem
251		* @param int $maxWidth
252		* @param int $maxLength
253		* @param int $maxDepth
254		* @param int $x
255		* @param int $y
256		* @param int $z
257		*/
258	27	protected function tryAndStackItemsIntoSpace(
259		PackedLayer $layer,
260		?PackedItem $prevItem,
261		?Item $nextItem,
262		int $maxWidth,
263		int $maxLength,
264		int $maxDepth,
265		int $x,
266		int $y,
267		int $z
268		): void {
269	27	while (count($this->items) > 0 && $this->checkNonDimensionalConstraints($this->items->top())) {
270	26	$stackedItem = $this->getOrientationForItem(
271	26	$this->items->top(),
272	26	$prevItem,
273	26	$nextItem,
274	26	$this->items->count() === 1,
275	26	$maxWidth,
276	26	$maxLength,
277	26	$maxDepth
278		);
279	26	if ($stackedItem) {
280	2	$this->remainingWeight -= $this->items->top()->getWeight();
281	2	$layer->insert(PackedItem::fromOrientatedItem($stackedItem, $x, $y, $z));
282	2	$this->items->extract();
283	2	$maxDepth -= $stackedItem->getDepth();
284	2	$z += $stackedItem->getDepth();
285		} else {
286	26	break;
287		}
288		}
289	27	}
290
291		/**
292		* Check item generally fits into box.
293		*
294		* @param Item $itemToPack
295		*
296		* @return bool
297		*/
298	27	protected function checkConstraints(
299		Item $itemToPack
300		): bool {
301	27	return $this->checkNonDimensionalConstraints($itemToPack) &&
302	27	$this->checkDimensionalConstraints($itemToPack);
303		}
304
305		/**
306		* As well as purely dimensional constraints, there are other constraints that need to be met
307		* e.g. weight limits or item-specific restrictions (e.g. max <x> batteries per box).
308		*
309		* @param Item $itemToPack
310		*
311		* @return bool
312		*/
313	27	protected function checkNonDimensionalConstraints(Item $itemToPack): bool
314		{
315	27	$weightOK = $itemToPack->getWeight() <= $this->remainingWeight;
316
317	27	if ($itemToPack instanceof ConstrainedItem) {
318	1	return $weightOK && $itemToPack->canBePackedInBox($this->getPackedItemList(), $this->box);
319		}
320
321	27	return $weightOK;
322		}
323
324		/**
325		* Check the item physically fits in the box (at all).
326		*
327		* @param Item $itemToPack
328		*
329		* @return bool
330		*/
331	27	protected function checkDimensionalConstraints(Item $itemToPack): bool
332		{
333	27	$orientatedItemFactory = new OrientatedItemFactory();
334	27	$orientatedItemFactory->setLogger($this->logger);
335
336	27	return (bool) $orientatedItemFactory->getPossibleOrientationsInEmptyBox($itemToPack, $this->box);
337		}
338
339		/**
340		* Reintegrate skipped items into main list.
341		*
342		* @param Item\|null $currentItem item from current iteration
343		*/
344	27	protected function rebuildItemList(?Item $currentItem = null): void
345		{
346	27	if (count($this->items) === 0) {
347	27	$this->items = $this->skippedItems;
348	27	$this->skippedItems = new ItemList();
349		}
350
351	27	if ($currentItem instanceof Item) {
352	20	$this->items->insert($currentItem);
353		}
354	27	}
355
356		/**
357		* Swap back width/length of the packed items to match orientation of the box if needed.
358		*/
359	7	protected function rotateLayersNinetyDegrees(): void
360		{
361	7	foreach ($this->layers as $i => $originalLayer) {
362	7	$newLayer = new PackedLayer();
363	7	foreach ($originalLayer->getItems() as $item) {
364	7	$packedItem = new PackedItem($item->getItem(), $item->getY(), $item->getX(), $item->getZ(), $item->getLength(), $item->getWidth(), $item->getDepth());
365	7	$newLayer->insert($packedItem);
366		}
367	7	$this->layers[$i] = $newLayer;
368		}
369	7	}
370
371		/**
372		* Are there items left to pack?
373		*
374		* @return bool
375		*/
376	27	protected function hasItemsLeftToPack(): bool
377		{
378	27	return count($this->skippedItems) + count($this->items) === 0;
379		}
380
381		/**
382		* Return next item in line for packing.
383		*
384		* @return Item\|null
385		*/
386	27	protected function getNextItem(): ?Item
387		{
388	27	return count($this->items) ? $this->items->top() : null;
389		}
390
391		/**
392		* Generate a single list of items packed.
393		*
394		* @return PackedItemList
395		*/
396	27	protected function getPackedItemList(): PackedItemList
397		{
398	27	$packedItemList = new PackedItemList();
399	27	foreach ($this->layers as $layer) {
400	27	foreach ($layer->getItems() as $packedItem) {
401	27	$packedItemList->insert($packedItem);
402		}
403		}
404
405	27	return $packedItemList;
406		}
407
408		/**
409		* Return the current packed depth.
410		*
411		* @return int
412		*/
413	27	protected function getCurrentPackedDepth(): int
414		{
415	27	$depth = 0;
416	27	foreach ($this->layers as $layer) {
417	13	$depth += $layer->getDepth();
418		}
419
420	27	return $depth;
421		}
422		}
423

dvdoug / BoxPacker

Push — weight_redistributor ( 060e5b...8de9a1 )

VolumePacker::getCurrentPackedDepth() A

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