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1 | <?php |
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2 | /** |
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3 | * Box packing (3D bin packing, knapsack problem) |
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4 | * @package BoxPacker |
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5 | * @author Doug Wright |
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6 | */ |
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7 | namespace DVDoug\BoxPacker; |
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8 | |||
9 | /** |
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10 | * A "box" with items |
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11 | * @author Doug Wright |
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12 | * @package BoxPacker |
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13 | */ |
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14 | class PackedBox |
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15 | { |
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16 | |||
17 | /** |
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18 | * Box used |
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19 | * @var Box |
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20 | */ |
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21 | protected $box; |
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22 | |||
23 | /** |
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24 | * Items in the box |
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25 | * @var ItemList |
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26 | */ |
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27 | protected $items; |
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28 | |||
29 | /** |
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30 | * Total weight of box |
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31 | * @var int |
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32 | */ |
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33 | protected $weight; |
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34 | |||
35 | /** |
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36 | * Get box used |
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37 | * @return Box |
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38 | */ |
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39 | 6 | public function getBox() |
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40 | { |
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41 | 6 | return $this->box; |
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42 | } |
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43 | |||
44 | /** |
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45 | * Get items packed |
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46 | * @return ItemList |
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47 | */ |
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48 | 35 | public function getItems() |
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49 | { |
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50 | 35 | return $this->items; |
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51 | } |
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52 | |||
53 | /** |
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54 | * Get packed weight |
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55 | * @return int weight in grams |
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56 | */ |
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57 | 9 | public function getWeight() |
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58 | { |
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59 | 9 | if (!is_null($this->weight)) { |
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60 | 6 | return $this->weight; |
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61 | } |
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62 | |||
63 | 9 | $this->weight = $this->box->getEmptyWeight(); |
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64 | 9 | $items = clone $this->items; |
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65 | /** @var PackedItem $item */ |
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66 | 9 | foreach ($items as $item) { |
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67 | 9 | $this->weight += $item->getItem()->getWeight(); |
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68 | } |
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69 | 9 | return $this->weight; |
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70 | } |
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71 | |||
72 | /** |
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73 | * Get remaining width inside box for another item |
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74 | * @return int |
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75 | */ |
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76 | 1 | public function getRemainingWidth() |
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77 | { |
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78 | 1 | return $this->box->getInnerWidth() - $this->getUsedWidth(); |
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79 | } |
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80 | |||
81 | /** |
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82 | * Get remaining length inside box for another item |
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83 | * @return int |
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84 | */ |
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85 | 1 | public function getRemainingLength() |
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86 | { |
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87 | 1 | return $this->box->getInnerLength() - $this->getUsedLength(); |
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88 | } |
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89 | |||
90 | /** |
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91 | * Get remaining depth inside box for another item |
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92 | * @return int |
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93 | */ |
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94 | 1 | public function getRemainingDepth() |
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95 | { |
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96 | 1 | return $this->box->getInnerDepth() - $this->getUsedDepth(); |
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97 | } |
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98 | |||
99 | /** |
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100 | * Used width inside box for packing items |
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101 | * @return int |
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102 | */ |
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103 | 5 | public function getUsedWidth() |
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104 | { |
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105 | 5 | $maxWidth = 0; |
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106 | |||
107 | /** @var PackedItem $item */ |
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108 | 5 | foreach (clone $this->items as $item) { |
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109 | 5 | $maxWidth = max($maxWidth, $item->getX() + $item->getWidth()); |
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110 | } |
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111 | |||
112 | 5 | return $maxWidth; |
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113 | } |
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114 | |||
115 | /** |
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116 | * Used length inside box for packing items |
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117 | * @return int |
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118 | */ |
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119 | 5 | public function getUsedLength() |
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120 | { |
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121 | 5 | $maxLength = 0; |
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122 | |||
123 | /** @var PackedItem $item */ |
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124 | 5 | foreach (clone $this->items as $item) { |
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125 | 5 | $maxLength = max($maxLength, $item->getY() + $item->getLength()); |
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126 | } |
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127 | |||
128 | 5 | return $maxLength; |
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129 | } |
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130 | |||
131 | /** |
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132 | * Used depth inside box for packing items |
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133 | * @return int |
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134 | */ |
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135 | 5 | public function getUsedDepth() |
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136 | { |
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137 | 5 | $maxDepth = 0; |
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138 | |||
139 | /** @var PackedItem $item */ |
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140 | 5 | foreach (clone $this->items as $item) { |
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141 | 5 | $maxDepth = max($maxDepth, $item->getZ() + $item->getDepth()); |
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142 | } |
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143 | |||
144 | 5 | return $maxDepth; |
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145 | } |
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146 | |||
147 | /** |
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148 | * Get remaining weight inside box for another item |
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149 | * @return int |
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150 | */ |
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151 | 1 | public function getRemainingWeight() |
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152 | { |
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153 | 1 | return $this->box->getMaxWeight() - $this->getWeight(); |
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154 | } |
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155 | |||
156 | /** |
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157 | * Get volume utilisation of the packed box |
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158 | * @return float |
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159 | */ |
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160 | 1 | public function getVolumeUtilisation() |
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161 | { |
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162 | 1 | $itemVolume = 0; |
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163 | |||
164 | /** @var PackedItem $item */ |
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165 | 1 | foreach (clone $this->items as $item) { |
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166 | 1 | $itemVolume += $item->getItem()->getVolume(); |
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167 | } |
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168 | |||
169 | 1 | return round($itemVolume / $this->box->getInnerVolume() * 100, 1); |
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170 | } |
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171 | |||
172 | |||
173 | /** |
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174 | * Constructor |
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175 | * |
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176 | * @param Box $box |
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177 | * @param PackedItemList $itemList |
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178 | */ |
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179 | 38 | public function __construct(Box $box, PackedItemList $itemList) |
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180 | { |
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181 | 38 | $this->box = $box; |
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182 | 38 | $this->items = $itemList; |
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183 | } |
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184 | } |
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185 |
Our type inference engine has found an assignment to a property that is incompatible with the declared type of that property.
Either this assignment is in error or the assigned type should be added to the documentation/type hint for that property..