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28 lines
987 B
28 lines
987 B
<?php
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namespace App\Image;
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use Jcupitt\Vips\Interpretation;
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class Processor {
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public static function brightness($image, float $brightness = 1.0, float $saturation = 1.0, float $hue = 0.0) {
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$oldInterpretation = $image->interpretation;
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$hue %= 360;
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if ($hue < 0) {
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$hue = 360 + $hue;
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}
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if ($image->hasAlpha()) {
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$imageWithoutAlpha = $image->extract_band(0, ['n' => $image->bands - 1]);
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$alpha = $image->extract_band($image->bands - 1, ['n' => 1]);
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return $imageWithoutAlpha
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->colourspace(Interpretation::LCH)
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->linear([$brightness, $saturation, 1.0], [0.0, 0.0, $hue])
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->colourspace($oldInterpretation)
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->bandjoin($alpha);
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}
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return $image
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->colourspace(Interpretation::LCH)
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->linear([$brightness, $saturation, 1.0], [0.0, 0.0, $hue])
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->colourspace($oldInterpretation);
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}
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}
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