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1 | <?php |
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2 | |||
3 | namespace Undemanding\Difference; |
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4 | |||
5 | use InvalidArgumentException; |
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6 | use Undemanding\Difference\Transformation; |
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7 | |||
8 | class Image |
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9 | { |
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10 | /** |
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11 | * @var array |
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12 | */ |
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13 | private $bitmap; |
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14 | |||
15 | /** |
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16 | * @var int |
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17 | */ |
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18 | private $width; |
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19 | |||
20 | /** |
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21 | * @var int |
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22 | */ |
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23 | private $height; |
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24 | |||
25 | /** |
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26 | * @param string $path |
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27 | */ |
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28 | 4 | public function __construct($path) |
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29 | { |
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30 | 4 | if (!file_exists($path)) { |
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31 | 1 | throw new InvalidArgumentException("image not found"); |
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32 | } |
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33 | |||
34 | 3 | $image = $this->createImage($path); |
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35 | |||
36 | 2 | $this->bitmap = $this->createBitmap( |
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37 | 2 | $image, |
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38 | 2 | $this->width = imagesx($image), |
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39 | 2 | $this->height = imagesy($image) |
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40 | 2 | ); |
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41 | 2 | } |
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42 | |||
43 | /** |
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44 | * Create new image resource from image path. |
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45 | * |
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46 | * @param string $path |
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47 | * |
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48 | * @return resource |
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49 | * |
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50 | * @throws InvalidArgumentException |
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51 | */ |
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52 | 3 | private function createImage($path) |
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53 | { |
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54 | 3 | $info = getimagesize($path); |
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55 | 3 | $type = $info[2]; |
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56 | |||
57 | 3 | $image = null; |
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58 | |||
59 | 3 | if ($type == IMAGETYPE_JPEG) { |
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60 | 1 | $image = imagecreatefromjpeg($path); |
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61 | 1 | } |
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62 | 3 | if ($type == IMAGETYPE_GIF) { |
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63 | 1 | $image = imagecreatefromgif($path); |
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64 | 1 | } |
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65 | 3 | if ($type == IMAGETYPE_PNG) { |
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66 | 2 | $image = imagecreatefrompng($path); |
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67 | 2 | } |
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68 | |||
69 | 3 | if (!$image) { |
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70 | 1 | throw new InvalidArgumentException("image invalid"); |
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71 | } |
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72 | |||
73 | 2 | return $image; |
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74 | } |
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75 | |||
76 | /** |
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77 | * Creates new bitmap from image resource. |
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78 | * |
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79 | * @param resource $image |
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80 | * @param int $width |
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81 | * @param int $height |
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82 | * |
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83 | * @return array |
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84 | */ |
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85 | 2 | private function createBitmap($image, $width, $height) |
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86 | { |
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87 | 2 | $bitmap = []; |
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88 | |||
89 | 2 | for ($y = 0; $y < $height; $y++) { |
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90 | 2 | $bitmap[$y] = []; |
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91 | |||
92 | 2 | for ($x = 0; $x < $width; $x++) { |
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93 | 2 | $color = imagecolorat($image, $x, $y); |
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94 | |||
95 | 2 | $bitmap[$y][$x] = [ |
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96 | 2 | "r" => ($color >> 16) & 0xFF, |
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97 | 2 | "g" => ($color >> 8) & 0xFF, |
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98 | "b" => $color & 0xFF |
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99 | 2 | ]; |
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100 | 2 | } |
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101 | 2 | } |
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102 | |||
103 | 2 | return $bitmap; |
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104 | } |
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105 | |||
106 | /** |
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107 | * Difference between two bitmap states. |
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108 | * |
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109 | * @param Image $image |
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110 | * @param callable $method |
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111 | * |
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112 | * @return Difference |
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113 | */ |
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114 | 1 | View Code Duplication | public function difference(Image $image, callable $method) |
0 ignored issues
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115 | { |
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116 | 1 | $transformation = new Transformation\Difference(); |
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117 | |||
118 | 1 | $bitmap = $transformation( |
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119 | 1 | $this->bitmap, $image->bitmap, $this->width, $this->height, $method |
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120 | 1 | ); |
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121 | |||
122 | 1 | return new Difference( |
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123 | 1 | $this->cloneWith("bitmap", $bitmap) |
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124 | 1 | ); |
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125 | } |
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126 | |||
127 | /** |
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128 | * @param string $property |
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129 | * @param mixed $value |
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130 | * |
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131 | * @return Image |
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132 | */ |
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133 | 1 | private function cloneWith($property, $value) |
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134 | { |
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135 | 1 | $clone = clone $this; |
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136 | 1 | $clone->$property = $value; |
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137 | |||
138 | 1 | return $clone; |
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139 | } |
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140 | |||
141 | /** |
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142 | * @return array |
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143 | */ |
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144 | 2 | public function getBitmap() |
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145 | { |
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146 | 2 | return $this->bitmap; |
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147 | } |
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148 | |||
149 | /** |
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150 | * @return int |
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151 | */ |
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152 | 2 | public function getWidth() |
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153 | { |
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154 | 2 | return $this->width; |
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155 | } |
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156 | |||
157 | /** |
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158 | * @return int |
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159 | */ |
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160 | 2 | public function getHeight() |
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161 | { |
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162 | 2 | return $this->height; |
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163 | } |
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164 | } |
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165 |
Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation.
You can also find more detailed suggestions in the “Code” section of your repository.