Viewing file:  Rgb.php (1.91 KB) -rw-r--r--
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<?php
declare(strict_types = 1);
namespace BaconQrCode\Renderer\Color;
use BaconQrCode\Exception;
final class Rgb implements ColorInterface
{
/**
* @var int
*/
private $red;
/**
* @var int
*/
private $green;
/**
* @var int
*/
private $blue;
/**
* @param int $red the red amount of the color, 0 to 255
* @param int $green the green amount of the color, 0 to 255
* @param int $blue the blue amount of the color, 0 to 255
*/
public function __construct(int $red, int $green, int $blue)
{
if ($red < 0 || $red > 255) {
throw new Exception\InvalidArgumentException('Red must be between 0 and 255');
}
if ($green < 0 || $green > 255) {
throw new Exception\InvalidArgumentException('Green must be between 0 and 255');
}
if ($blue < 0 || $blue > 255) {
throw new Exception\InvalidArgumentException('Blue must be between 0 and 255');
}
$this->red = $red;
$this->green = $green;
$this->blue = $blue;
}
public function getRed() : int
{
return $this->red;
}
public function getGreen() : int
{
return $this->green;
}
public function getBlue() : int
{
return $this->blue;
}
public function toRgb() : Rgb
{
return $this;
}
public function toCmyk() : Cmyk
{
$c = 1 - ($this->red / 255);
$m = 1 - ($this->green / 255);
$y = 1 - ($this->blue / 255);
$k = min($c, $m, $y);
return new Cmyk(
(int) (100 * ($c - $k) / (1 - $k)),
(int) (100 * ($m - $k) / (1 - $k)),
(int) (100 * ($y - $k) / (1 - $k)),
(int) (100 * $k)
);
}
public function toGray() : Gray
{
return new Gray((int) (($this->red * 0.21 + $this->green * 0.71 + $this->blue * 0.07) / 2.55));
}
}
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