VolumePacker::rebuildItemList() - Code Metrics - Inspection of "Backport changes from 3.x-dev" - dvdoug/BoxPacker - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Push — 1.x-dev ( b2df86...afef98 )

by Doug

created 2018-11-10 23:36 UTC

VolumePacker::rebuildItemList() A

↳ Parent: VolumePacker

Complexity

Conditions	3
Paths	4

Size

Total Lines	9
Code Lines	5

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	6
CRAP Score	3

Importance

Changes

Metric	Value
cc	3
eloc	5
nc	4
nop	1
dl	0
loc	9
ccs	6
cts	6
cp	1
crap	3
rs	10
c	0
b	0
f	0

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

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 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 = [];

    /**
     * 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()
    {
        $this->logger->debug("[EVALUATING BOX] {$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 PackedBox::fromPackedItemList($this->box, $this->getPackedItemList());
    }

    /**
     * Pack items into an individual vertical layer.
     *
     * @param int $startDepth
     * @param int $widthLeft
     * @param int $lengthLeft
     * @param int $depthLeft
     */
    protected function packLayer($startDepth, $widthLeft, $lengthLeft, $depthLeft)
    {
        $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);

            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());
                $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(), $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()
    {
        $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
     *
     * @return OrientatedItem|null
     */
    protected function getOrientationForItem(
        Item $itemToPack,
        PackedItem $prevItem = null,
        ItemList $nextItems,
        $isLastItem,
        $maxWidth,
        $maxLength,
        $maxDepth
    ) {
        $this->logger->debug(
            "evaluating item {$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);

        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 = null,
        ItemList $nextItems,
        $maxWidth,
        $maxLength,
        $maxDepth,
        $x,
        $y,
        $z
    ) {
        while (count($this->items) > 0 && $this->checkNonDimensionalConstraints($this->items->top())) {
            $stackedItem = $this->getOrientationForItem(
                $this->items->top(),
                $prevItem,
                $nextItems,
                $this->items->count() === 1,
                $maxWidth,
                $maxLength,
                $maxDepth
            );
            if ($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
    ) {
        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)
    {
        $weightOK = $itemToPack->getWeight() <= $this->remainingWeight;

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

        return $weightOK;
    }

    /**
     * Check the item physically fits in the box (at all).
     *
     * @param Item $itemToPack
     *
     * @return bool
     */
    protected function checkDimensionalConstraints(Item $itemToPack)
    {
        $orientatedItemFactory = new OrientatedItemFactory($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 $currentItem = null)
    {
        if (count($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()
    {
        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()
    {
        return count($this->skippedItems) + count($this->items) === 0;
    }

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

        return $packedItemList;
    }

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

dvdoug / BoxPacker

Push — 1.x-dev ( b2df86...afef98 )

VolumePacker::rebuildItemList() A

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