OrientatedItemFactory::getUsableOrientations() - Code Metrics - Inspection of "Remove unneeded/slightly counterproductive orienta..." - dvdoug/BoxPacker - Measure and Improve Code Quality continuously with Scrutinizer

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Push — limited_supply_boxes ( 50c059...126eb4 )

by Doug

created 2020-01-19 17:17 UTC

OrientatedItemFactory::getUsableOrientations() B

↳ Parent: OrientatedItemFactory

Complexity

Conditions	7
Paths	12

Size

Total Lines	32
Code Lines	13

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	13
CRAP Score	7

Importance

Changes	4
Bugs	3	Features	0

Metric	Value
cc	7
eloc	13
c	4
b	3
f	0
nc	12
nop	3
dl	0
loc	32
ccs	13
cts	13
cp	1
crap	7
rs	8.8333

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

namespace DVDoug\BoxPacker;

use function array_filter;
use function count;
use function min;
use Psr\Log\LoggerAwareInterface;
use Psr\Log\LoggerAwareTrait;
use Psr\Log\NullLogger;
use function reset;
use function sort;
use function usort;

/**
 * Figure out orientations for an item and a given set of dimensions.
 *
 * @author Doug Wright
 * @internal
 */
class OrientatedItemFactory implements LoggerAwareInterface
{
    use LoggerAwareTrait;

    /** @var Box */
    protected $box;

    /**
     * @var OrientatedItem[]
     */
    protected static $emptyBoxCache = [];

    /**
     * @var int[]
     */
    protected static $lookaheadCache = [];

    public function __construct(Box $box)
    {
        $this->box = $box;
        $this->logger = new NullLogger();
    }

    /**
     * Get the best orientation for an item.
     */
    public function getBestOrientation(
        Item $item,
        ?OrientatedItem $prevItem,
        ItemList $nextItems,
        bool $isLastItem,
        int $widthLeft,
        int $lengthLeft,
        int $depthLeft,
        int $rowLength,
        int $x,
        int $y,
        int $z,
        PackedItemList $prevPackedItemList
    ): ?OrientatedItem {
        $possibleOrientations = $this->getPossibleOrientations($item, $prevItem, $widthLeft, $lengthLeft, $depthLeft, $x, $y, $z, $prevPackedItemList);
        $usableOrientations = $this->getUsableOrientations($item, $possibleOrientations, $isLastItem);

        if (empty($usableOrientations)) {
            return null;
        }

        usort($usableOrientations, function (OrientatedItem $a, OrientatedItem $b) use ($widthLeft, $lengthLeft, $depthLeft, $nextItems, $rowLength, $x, $y, $z, $prevPackedItemList) {
            $orientationAWidthLeft = $widthLeft - $a->getWidth();
            $orientationALengthLeft = $lengthLeft - $a->getLength();
            $orientationBWidthLeft = $widthLeft - $b->getWidth();
            $orientationBLengthLeft = $lengthLeft - $b->getLength();

            $orientationAMinGap = min($orientationAWidthLeft, $orientationALengthLeft);
            $orientationBMinGap = min($orientationBWidthLeft, $orientationBLengthLeft);

            if ($orientationAMinGap === 0) { // prefer A if it leaves no gap
                return -1;
            }
            if ($orientationBMinGap === 0) { // prefer B if it leaves no gap
                return 1;
            }

            // prefer leaving room for next item in current row
            if ($nextItems->count()) {
                $nextItemFitA = $this->getPossibleOrientations($nextItems->top(), $a, $orientationAWidthLeft, $lengthLeft, $depthLeft, $x, $y, $z, $prevPackedItemList);
                $nextItemFitB = $this->getPossibleOrientations($nextItems->top(), $b, $orientationBWidthLeft, $lengthLeft, $depthLeft, $x, $y, $z, $prevPackedItemList);
                if ($nextItemFitA && !$nextItemFitB) {
                    return -1;
                }
                if ($nextItemFitB && !$nextItemFitA) {
                    return 1;
                }

                // if not an easy either/or, do a partial lookahead
                $additionalPackedA = $this->calculateAdditionalItemsPackedWithThisOrientation($a, $nextItems, $widthLeft, $lengthLeft, $depthLeft, $rowLength);
                $additionalPackedB = $this->calculateAdditionalItemsPackedWithThisOrientation($b, $nextItems, $widthLeft, $lengthLeft, $depthLeft, $rowLength);
                if ($additionalPackedA !== $additionalPackedB) {
                    return $additionalPackedB <=> $additionalPackedA;
                }
            }
            // otherwise prefer leaving minimum possible gap, or the greatest footprint
            return $orientationAMinGap <=> $orientationBMinGap ?: $a->getSurfaceFootprint() <=> $b->getSurfaceFootprint();
        });

        $bestFit = reset($usableOrientations);
        $this->logger->debug('Selected best fit orientation', ['orientation' => $bestFit]);

        return $bestFit;
    }

    /**
     * Find all possible orientations for an item.
     *
     * @return OrientatedItem[]
     */
    public function getPossibleOrientations(
        Item $item,
        ?OrientatedItem $prevItem,
        int $widthLeft,
        int $lengthLeft,
        int $depthLeft,
        int $x,
        int $y,
        int $z,
        PackedItemList $prevPackedItemList
    ): array {
        $orientations = $orientationsDimensions = [];

        $isSame = false;
        if ($prevItem) {
            $itemADimensions = [$item->getWidth(), $item->getLength(), $item->getDepth()];
            $itemBDimensions = [$prevItem->getWidth(), $prevItem->getLength(), $prevItem->getDepth()];
            sort($itemADimensions);
            sort($itemBDimensions);
            $isSame = ($itemADimensions === $itemBDimensions);
        }

        //Special case items that are the same as what we just packed - keep orientation
        if ($isSame && $prevItem) {
            $orientationsDimensions[] = [$prevItem->getWidth(), $prevItem->getLength(), $prevItem->getDepth()];
        } else {
            //simple 2D rotation
            $orientationsDimensions[] = [$item->getWidth(), $item->getLength(), $item->getDepth()];
            $orientationsDimensions[] = [$item->getLength(), $item->getWidth(), $item->getDepth()];

            //add 3D rotation if we're allowed
            if (!$item->getKeepFlat()) {
                $orientationsDimensions[] = [$item->getWidth(), $item->getDepth(), $item->getLength()];
                $orientationsDimensions[] = [$item->getLength(), $item->getDepth(), $item->getWidth()];
                $orientationsDimensions[] = [$item->getDepth(), $item->getWidth(), $item->getLength()];
                $orientationsDimensions[] = [$item->getDepth(), $item->getLength(), $item->getWidth()];
            }
        }

        //remove any that simply don't fit
        $orientationsDimensions = array_unique($orientationsDimensions, SORT_REGULAR);
        $orientationsDimensions = array_filter($orientationsDimensions, static function (array $i) use ($widthLeft, $lengthLeft, $depthLeft) {
            return $i[0] <= $widthLeft && $i[1] <= $lengthLeft && $i[2] <= $depthLeft;
        });

        foreach ($orientationsDimensions as $dimensions) {
            $orientations[] = new OrientatedItem($item, $dimensions[0], $dimensions[1], $dimensions[2]);
        }

        if ($item instanceof ConstrainedPlacementItem) {
            $box = $this->box;
            $orientations = array_filter($orientations, static function (OrientatedItem $i) use ($box, $x, $y, $z, $prevPackedItemList) {
                /** @var ConstrainedPlacementItem $constrainedItem */
                $constrainedItem = $i->getItem();

                return $constrainedItem->canBePacked($box, $prevPackedItemList, $x, $y, $z, $i->getWidth(), $i->getLength(), $i->getDepth());
            });
        }

        return $orientations;
    }

    /**
     * @return OrientatedItem[]
     */
    public function getPossibleOrientationsInEmptyBox(Item $item): array
    {
        $cacheKey = $item->getWidth() .
            '|' .
            $item->getLength() .
            '|' .
            $item->getDepth() .
            '|' .
            ($item->getKeepFlat() ? '2D' : '3D') .
            '|' .
            $this->box->getInnerWidth() .
            '|' .
            $this->box->getInnerLength() .
            '|' .
            $this->box->getInnerDepth();

        if (isset(static::$emptyBoxCache[$cacheKey])) {
            $orientations = static::$emptyBoxCache[$cacheKey];
        } else {
            $orientations = $this->getPossibleOrientations(
                $item,
                null,
                $this->box->getInnerWidth(),
                $this->box->getInnerLength(),
                $this->box->getInnerDepth(),
                0,
                0,
                0,
                new PackedItemList()
            );
            static::$emptyBoxCache[$cacheKey] = $orientations;
        }

        return $orientations;

    }

    /**
     * @param OrientatedItem[] $possibleOrientations
     *
     * @return OrientatedItem[]
     */
    protected function getUsableOrientations(
        Item $item,
        $possibleOrientations,
        bool $isLastItem
    ): array {
        $orientationsToUse = $stableOrientations = $unstableOrientations = [];

        // Divide possible orientations into stable (low centre of gravity) and unstable (high centre of gravity)
        foreach ($possibleOrientations as $orientation) {
            if ($orientation->isStable()) {
                $stableOrientations[] = $orientation;
            } else {
                $unstableOrientations[] = $orientation;
            }
        }

        /*
         * We prefer to use stable orientations only, but allow unstable ones if either
         * the item is the last one left to pack OR
         * the item doesn't fit in the box any other way
         */
        if (count($stableOrientations) > 0) {
            $orientationsToUse = $stableOrientations;
        } elseif (count($unstableOrientations) > 0) {
            $stableOrientationsInEmptyBox = $this->getStableOrientationsInEmptyBox($item);

            if ($isLastItem || count($stableOrientationsInEmptyBox) === 0) {
                $orientationsToUse = $unstableOrientations;
            }
        }

        return $orientationsToUse;
    }

    /**
     * Return the orientations for this item if it were to be placed into the box with nothing else.
     */
    protected function getStableOrientationsInEmptyBox(Item $item): array
    {
        $orientationsInEmptyBox = $this->getPossibleOrientationsInEmptyBox($item);

        return array_filter(
            $orientationsInEmptyBox,
            function (OrientatedItem $orientation) {
                return $orientation->isStable();
            }
        );
    }

    /**
     * Approximation of a forward-looking packing.
     *
     * Not an actual packing, that has additional logic regarding constraints and stackability, this focuses
     * purely on fit.
     */
    protected function calculateAdditionalItemsPackedWithThisOrientation(
        OrientatedItem $prevItem,
        ItemList $nextItems,
        int $originalWidthLeft,
        int $originalLengthLeft,
        int $depthLeft,
        int $currentRowLengthBeforePacking
    ): int {
        $packedCount = 0;

        $currentRowLength = max($prevItem->getLength(), $currentRowLengthBeforePacking);

        $itemsToPack = $nextItems->topN(8); // cap lookahead as this gets recursive and slow

        $cacheKey = $originalWidthLeft .
            '|' .
            $originalLengthLeft .
            '|' .
            $prevItem->getWidth() .
            '|' .
            $prevItem->getLength() .
            '|' .
            $currentRowLength .
            '|'
            . $depthLeft;

        /** @var Item $itemToPack */
        foreach ($itemsToPack as $itemToPack) {
            $cacheKey .= '|' .
                $itemToPack->getWidth() .
                '|' .
                $itemToPack->getLength() .
                '|' .
                $itemToPack->getDepth() .
                '|' .
                $itemToPack->getWeight() .
                '|' .
                ($itemToPack->getKeepFlat() ? '1' : '0');
        }

        if (!isset(static::$lookaheadCache[$cacheKey])) {
            $tempBox = new WorkingVolume($originalWidthLeft - $prevItem->getWidth(), $currentRowLength, $depthLeft, PHP_INT_MAX);
            $tempPacker = new VolumePacker($tempBox, clone $itemsToPack);
            $tempPacker->setLookAheadMode(true);
            $remainingRowPacked = $tempPacker->pack();
            /** @var PackedItem $packedItem */
            foreach ($remainingRowPacked->getItems() as $packedItem) {
                $itemsToPack->remove($packedItem->getItem());
            }

            $tempBox = new WorkingVolume($originalWidthLeft, $originalLengthLeft - $currentRowLength, $depthLeft, PHP_INT_MAX);
            $tempPacker = new VolumePacker($tempBox, clone $itemsToPack);
            $tempPacker->setLookAheadMode(true);
            $nextRowsPacked = $tempPacker->pack();
            /** @var PackedItem $packedItem */
            foreach ($nextRowsPacked->getItems() as $packedItem) {
                $itemsToPack->remove($packedItem->getItem());
            }

            $this->logger->debug('Lookahead with orientation', ['packedCount' => $packedCount, 'orientatedItem' => $prevItem]);

            static::$lookaheadCache[$cacheKey] = $nextItems->count() - $itemsToPack->count();
        }

        return static::$lookaheadCache[$cacheKey];
    }
}


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 function array_filter;
12		use function count;
13		use function min;
14		use Psr\Log\LoggerAwareInterface;
15		use Psr\Log\LoggerAwareTrait;
16		use Psr\Log\NullLogger;
17		use function reset;
18		use function sort;
19		use function usort;
20
21		/**
22		* Figure out orientations for an item and a given set of dimensions.
23		*
24		* @author Doug Wright
25		* @internal
26		*/
27		class OrientatedItemFactory implements LoggerAwareInterface
28		{
29		use LoggerAwareTrait;
30
31		/** @var Box */
32		protected $box;
33
34		/**
35		* @var OrientatedItem[]
36		*/
37		protected static $emptyBoxCache = [];
38
39		/**
40		* @var int[]
41		*/
42		protected static $lookaheadCache = [];
43
44	54	public function __construct(Box $box)
45		{
46	54	$this->box = $box;
47	54	$this->logger = new NullLogger();
48	54	}
49
50		/**
51		* Get the best orientation for an item.
52		*/
53	52	public function getBestOrientation(
54		Item $item,
55		?OrientatedItem $prevItem,
56		ItemList $nextItems,
57		bool $isLastItem,
58		int $widthLeft,
59		int $lengthLeft,
60		int $depthLeft,
61		int $rowLength,
62		int $x,
63		int $y,
64		int $z,
65		PackedItemList $prevPackedItemList
66		): ?OrientatedItem {
67	52	$possibleOrientations = $this->getPossibleOrientations($item, $prevItem, $widthLeft, $lengthLeft, $depthLeft, $x, $y, $z, $prevPackedItemList);
68	52	$usableOrientations = $this->getUsableOrientations($item, $possibleOrientations, $isLastItem);
69
70	52	if (empty($usableOrientations)) {
71	49	return null;
72		}
73
74		usort($usableOrientations, function (OrientatedItem $a, OrientatedItem $b) use ($widthLeft, $lengthLeft, $depthLeft, $nextItems, $rowLength, $x, $y, $z, $prevPackedItemList) {
75	28	$orientationAWidthLeft = $widthLeft - $a->getWidth();
76	28	$orientationALengthLeft = $lengthLeft - $a->getLength();
77	28	$orientationBWidthLeft = $widthLeft - $b->getWidth();
78	28	$orientationBLengthLeft = $lengthLeft - $b->getLength();
79
80	28	$orientationAMinGap = min($orientationAWidthLeft, $orientationALengthLeft);
81	28	$orientationBMinGap = min($orientationBWidthLeft, $orientationBLengthLeft);
82
83	28	if ($orientationAMinGap === 0) { // prefer A if it leaves no gap
84	15	return -1;
85		}
86	25	if ($orientationBMinGap === 0) { // prefer B if it leaves no gap
87	16	return 1;
88		}
89
90		// prefer leaving room for next item in current row
91	24	if ($nextItems->count()) {
92	21	$nextItemFitA = $this->getPossibleOrientations($nextItems->top(), $a, $orientationAWidthLeft, $lengthLeft, $depthLeft, $x, $y, $z, $prevPackedItemList);
93	21	$nextItemFitB = $this->getPossibleOrientations($nextItems->top(), $b, $orientationBWidthLeft, $lengthLeft, $depthLeft, $x, $y, $z, $prevPackedItemList);
94	21	if ($nextItemFitA && !$nextItemFitB) {
95	9	return -1;
96		}
97	19	if ($nextItemFitB && !$nextItemFitA) {
98	8	return 1;
99		}
100
101		// if not an easy either/or, do a partial lookahead
102	17	$additionalPackedA = $this->calculateAdditionalItemsPackedWithThisOrientation($a, $nextItems, $widthLeft, $lengthLeft, $depthLeft, $rowLength);
103	17	$additionalPackedB = $this->calculateAdditionalItemsPackedWithThisOrientation($b, $nextItems, $widthLeft, $lengthLeft, $depthLeft, $rowLength);
104	17	if ($additionalPackedA !== $additionalPackedB) {
105	8	return $additionalPackedB <=> $additionalPackedA;
106		}
107		}
108		// otherwise prefer leaving minimum possible gap, or the greatest footprint
109	20	return $orientationAMinGap <=> $orientationBMinGap ?: $a->getSurfaceFootprint() <=> $b->getSurfaceFootprint();
110	52	});
111
112	52	$bestFit = reset($usableOrientations);
113	52	$this->logger->debug('Selected best fit orientation', ['orientation' => $bestFit]);
114
115	52	return $bestFit;
116		}
117
118		/**
119		* Find all possible orientations for an item.
120		*
121		* @return OrientatedItem[]
122		*/
123	53	public function getPossibleOrientations(
124		Item $item,
125		?OrientatedItem $prevItem,
126		int $widthLeft,
127		int $lengthLeft,
128		int $depthLeft,
129		int $x,
130		int $y,
131		int $z,
132		PackedItemList $prevPackedItemList
133		): array {
134	53	$orientations = $orientationsDimensions = [];
135
136	53	$isSame = false;
137	53	if ($prevItem) {
138	49	$itemADimensions = [$item->getWidth(), $item->getLength(), $item->getDepth()];
139	49	$itemBDimensions = [$prevItem->getWidth(), $prevItem->getLength(), $prevItem->getDepth()];
140	49	sort($itemADimensions);
141	49	sort($itemBDimensions);
142	49	$isSame = ($itemADimensions === $itemBDimensions);
143		}
144
145		//Special case items that are the same as what we just packed - keep orientation
146	53	if ($isSame && $prevItem) {
147	42	$orientationsDimensions[] = [$prevItem->getWidth(), $prevItem->getLength(), $prevItem->getDepth()];
148		} else {
149		//simple 2D rotation
150	53	$orientationsDimensions[] = [$item->getWidth(), $item->getLength(), $item->getDepth()];
151	53	$orientationsDimensions[] = [$item->getLength(), $item->getWidth(), $item->getDepth()];
152
153		//add 3D rotation if we're allowed
154	53	if (!$item->getKeepFlat()) {
155	34	$orientationsDimensions[] = [$item->getWidth(), $item->getDepth(), $item->getLength()];
156	34	$orientationsDimensions[] = [$item->getLength(), $item->getDepth(), $item->getWidth()];
157	34	$orientationsDimensions[] = [$item->getDepth(), $item->getWidth(), $item->getLength()];
158	34	$orientationsDimensions[] = [$item->getDepth(), $item->getLength(), $item->getWidth()];
159		}
160		}
161
162		//remove any that simply don't fit
163	53	$orientationsDimensions = array_unique($orientationsDimensions, SORT_REGULAR);
164		$orientationsDimensions = array_filter($orientationsDimensions, static function (array $i) use ($widthLeft, $lengthLeft, $depthLeft) {
165	53	return $i[0] <= $widthLeft && $i[1] <= $lengthLeft && $i[2] <= $depthLeft;
166	53	});
167
168	53	foreach ($orientationsDimensions as $dimensions) {
169	52	$orientations[] = new OrientatedItem($item, $dimensions[0], $dimensions[1], $dimensions[2]);
170		}
171
172	53	if ($item instanceof ConstrainedPlacementItem) {
173	2	$box = $this->box;
174		$orientations = array_filter($orientations, static function (OrientatedItem $i) use ($box, $x, $y, $z, $prevPackedItemList) {
175		/** @var ConstrainedPlacementItem $constrainedItem */
176	2	$constrainedItem = $i->getItem();
177
178	2	return $constrainedItem->canBePacked($box, $prevPackedItemList, $x, $y, $z, $i->getWidth(), $i->getLength(), $i->getDepth());
179	2	});
180		}
181
182	53	return $orientations;
183		}
184
185		/**
186		* @return OrientatedItem[]
187		*/
188	29	public function getPossibleOrientationsInEmptyBox(Item $item): array
189		{
190	29	$cacheKey = $item->getWidth() .
191	29	'\|' .
192	29	$item->getLength() .
193	29	'\|' .
194	29	$item->getDepth() .
195	29	'\|' .
196	29	($item->getKeepFlat() ? '2D' : '3D') .
197	29	'\|' .
198	29	$this->box->getInnerWidth() .
199	29	'\|' .
200	29	$this->box->getInnerLength() .
201	29	'\|' .
202	29	$this->box->getInnerDepth();
203
204	29	if (isset(static::$emptyBoxCache[$cacheKey])) {
205	24	$orientations = static::$emptyBoxCache[$cacheKey];
206		} else {
207	25	$orientations = $this->getPossibleOrientations(
208	25	$item,
209	25	null,
210	25	$this->box->getInnerWidth(),
211	25	$this->box->getInnerLength(),
212	25	$this->box->getInnerDepth(),
213	25	0,
214	25	0,
215	25	0,
216	25	new PackedItemList()
217		);
218	25	static::$emptyBoxCache[$cacheKey] = $orientations;
219		}
220
221	29	return $orientations;
		1 ignored issue – show Bug Best Practice introduced 2018-01-07 15:59 UTC by Report Bug Copy Issue Report The expression `return $orientations` could return the type `DVDoug\BoxPacker\OrientatedItem` which is incompatible with the type-hinted return `array`. Consider adding an additional type-check to rule them out. Loading history...
222		}
223
224		/**
225		* @param OrientatedItem[] $possibleOrientations
226		*
227		* @return OrientatedItem[]
228		*/
229	52	protected function getUsableOrientations(
230		Item $item,
231		$possibleOrientations,
232		bool $isLastItem
233		): array {
234	52	$orientationsToUse = $stableOrientations = $unstableOrientations = [];
235
236		// Divide possible orientations into stable (low centre of gravity) and unstable (high centre of gravity)
237	52	foreach ($possibleOrientations as $orientation) {
238	52	if ($orientation->isStable()) {
239	50	$stableOrientations[] = $orientation;
240		} else {
241	52	$unstableOrientations[] = $orientation;
242		}
243		}
244
245		/*
246		* We prefer to use stable orientations only, but allow unstable ones if either
247		* the item is the last one left to pack OR
248		* the item doesn't fit in the box any other way
249		*/
250	52	if (count($stableOrientations) > 0) {
251	50	$orientationsToUse = $stableOrientations;
252	49	} elseif (count($unstableOrientations) > 0) {
253	6	$stableOrientationsInEmptyBox = $this->getStableOrientationsInEmptyBox($item);
254
255	6	if ($isLastItem \|\| count($stableOrientationsInEmptyBox) === 0) {
256	4	$orientationsToUse = $unstableOrientations;
257		}
258		}
259
260	52	return $orientationsToUse;
261		}
262
263		/**
264		* Return the orientations for this item if it were to be placed into the box with nothing else.
265		*/
266	6	protected function getStableOrientationsInEmptyBox(Item $item): array
267		{
268	6	$orientationsInEmptyBox = $this->getPossibleOrientationsInEmptyBox($item);
269
270	6	return array_filter(
271	6	$orientationsInEmptyBox,
272		function (OrientatedItem $orientation) {
273	6	return $orientation->isStable();
274	6	}
275		);
276		}
277
278		/**
279		* Approximation of a forward-looking packing.
280		*
281		* Not an actual packing, that has additional logic regarding constraints and stackability, this focuses
282		* purely on fit.
283		*/
284	17	protected function calculateAdditionalItemsPackedWithThisOrientation(
285		OrientatedItem $prevItem,
286		ItemList $nextItems,
287		int $originalWidthLeft,
288		int $originalLengthLeft,
289		int $depthLeft,
290		int $currentRowLengthBeforePacking
291		): int {
292	17	$packedCount = 0;
293
294	17	$currentRowLength = max($prevItem->getLength(), $currentRowLengthBeforePacking);
295
296	17	$itemsToPack = $nextItems->topN(8); // cap lookahead as this gets recursive and slow
297
298		$cacheKey = $originalWidthLeft .
299	17	'\|' .
300	17	$originalLengthLeft .
301	17	'\|' .
302	17	$prevItem->getWidth() .
303	17	'\|' .
304	17	$prevItem->getLength() .
305	17	'\|' .
306	17	$currentRowLength .
307	17	'\|'
308	17	. $depthLeft;
309
310		/** @var Item $itemToPack */
311	17	foreach ($itemsToPack as $itemToPack) {
312		$cacheKey .= '\|' .
313	17	$itemToPack->getWidth() .
314	17	'\|' .
315	17	$itemToPack->getLength() .
316	17	'\|' .
317	17	$itemToPack->getDepth() .
318	17	'\|' .
319	17	$itemToPack->getWeight() .
320	17	'\|' .
321	17	($itemToPack->getKeepFlat() ? '1' : '0');
322		}
323
324	17	if (!isset(static::$lookaheadCache[$cacheKey])) {
325	17	$tempBox = new WorkingVolume($originalWidthLeft - $prevItem->getWidth(), $currentRowLength, $depthLeft, PHP_INT_MAX);
326	17	$tempPacker = new VolumePacker($tempBox, clone $itemsToPack);
327	17	$tempPacker->setLookAheadMode(true);
328	17	$remainingRowPacked = $tempPacker->pack();
329		/** @var PackedItem $packedItem */
330	17	foreach ($remainingRowPacked->getItems() as $packedItem) {
331	17	$itemsToPack->remove($packedItem->getItem());
332		}
333
334	17	$tempBox = new WorkingVolume($originalWidthLeft, $originalLengthLeft - $currentRowLength, $depthLeft, PHP_INT_MAX);
335	17	$tempPacker = new VolumePacker($tempBox, clone $itemsToPack);
336	17	$tempPacker->setLookAheadMode(true);
337	17	$nextRowsPacked = $tempPacker->pack();
338		/** @var PackedItem $packedItem */
339	17	foreach ($nextRowsPacked->getItems() as $packedItem) {
340	13	$itemsToPack->remove($packedItem->getItem());
341		}
342
343	17	$this->logger->debug('Lookahead with orientation', ['packedCount' => $packedCount, 'orientatedItem' => $prevItem]);
344
345	17	static::$lookaheadCache[$cacheKey] = $nextItems->count() - $itemsToPack->count();
346		}
347
348	17	return static::$lookaheadCache[$cacheKey];
349		}
350		}
351

dvdoug / BoxPacker

Push — limited_supply_boxes ( 50c059...126eb4 )

OrientatedItemFactory::getUsableOrientations() B

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