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<?php |
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|
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namespace League\Glide\Manipulators; |
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|
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use Intervention\Image\Image; |
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|
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/** |
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* @property string|null $gam |
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*/ |
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class Gamma extends BaseManipulator |
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{ |
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/** |
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* Perform gamma image manipulation. |
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* |
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* @param Image $image The source image. |
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* |
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* @return Image The manipulated image. |
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*/ |
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public function run(Image $image) |
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{ |
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$gamma = $this->getGamma(); |
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|
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if ($gamma) { |
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$image->gamma($gamma); |
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} |
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|
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return $image; |
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} |
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|
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/** |
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* Resolve gamma amount. |
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* |
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* @return float|null The resolved gamma amount. |
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*/ |
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public function getGamma() |
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{ |
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if (null === $this->gam || !preg_match('/^[0-9]\.*[0-9]*$/', $this->gam)) { |
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return; |
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} |
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|
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if ($this->gam < 0.1 or $this->gam > 9.99) { |
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return; |
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} |
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|
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return (float) $this->gam; |
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} |
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} |
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|
