104 lines
2.3 KiB
PHP
104 lines
2.3 KiB
PHP
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<?php
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declare(strict_types = 1);
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namespace BaconQrCode\Renderer\Color;
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use BaconQrCode\Exception;
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final class Cmyk implements ColorInterface
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{
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/**
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* @var int
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*/
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private $cyan;
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/**
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* @var int
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*/
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private $magenta;
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/**
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* @var int
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*/
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private $yellow;
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/**
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* @var int
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*/
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private $black;
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/**
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* @param int $cyan the cyan amount, 0 to 100
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* @param int $magenta the magenta amount, 0 to 100
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* @param int $yellow the yellow amount, 0 to 100
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* @param int $black the black amount, 0 to 100
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*/
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public function __construct(int $cyan, int $magenta, int $yellow, int $black)
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{
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if ($cyan < 0 || $cyan > 100) {
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throw new Exception\InvalidArgumentException('Cyan must be between 0 and 100');
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}
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if ($magenta < 0 || $magenta > 100) {
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throw new Exception\InvalidArgumentException('Magenta must be between 0 and 100');
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}
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if ($yellow < 0 || $yellow > 100) {
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throw new Exception\InvalidArgumentException('Yellow must be between 0 and 100');
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}
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if ($black < 0 || $black > 100) {
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throw new Exception\InvalidArgumentException('Black must be between 0 and 100');
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}
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$this->cyan = $cyan;
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$this->magenta = $magenta;
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$this->yellow = $yellow;
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$this->black = $black;
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}
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public function getCyan() : int
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{
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return $this->cyan;
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}
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public function getMagenta() : int
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{
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return $this->magenta;
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}
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public function getYellow() : int
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{
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return $this->yellow;
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}
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public function getBlack() : int
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{
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return $this->black;
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}
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public function toRgb() : Rgb
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{
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$k = $this->black / 100;
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$c = (-$k * $this->cyan + $k * 100 + $this->cyan) / 100;
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$m = (-$k * $this->magenta + $k * 100 + $this->magenta) / 100;
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$y = (-$k * $this->yellow + $k * 100 + $this->yellow) / 100;
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return new Rgb(
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(int) (-$c * 255 + 255),
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(int) (-$m * 255 + 255),
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(int) (-$y * 255 + 255)
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);
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}
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public function toCmyk() : Cmyk
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{
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return $this;
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}
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public function toGray() : Gray
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{
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return $this->toRgb()->toGray();
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}
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}
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