Color.php

<?php
 
/*
 *
 *  ____            _        _   __  __ _                  __  __ ____
 * |  _ \ ___   ___| | _____| |_|  \/  (_)_ __   ___      |  \/  |  _ \
 * | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
 * |  __/ (_) | (__|   <  __/ |_| |  | | | | | |  __/_____| |  | |  __/
 * |_|   \___/ \___|_|\_\___|\__|_|  |_|_|_| |_|\___|     |_|  |_|_|
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * @author PocketMine Team
 * @link http://www.pocketmine.net/
 *
 *
*/
 
declare(strict_types=1);
 
namespace pocketmine\color;
 
use function count;
use function intdiv;
 
final class Color{
    private int $a;
    private int $r;
    private int $g;
    private int $b;
 
    public function __construct(int $r, int $g, int $b, int $a = 0xff){
        $this->r = $r & 0xff;
        $this->g = $g & 0xff;
        $this->b = $b & 0xff;
        $this->a = $a & 0xff;
    }
 
    public function getA() : int{
        return $this->a;
    }
 
    public function getR() : int{
        return $this->r;
    }
 
    public function getG() : int{
        return $this->g;
    }
 
    public function getB() : int{
        return $this->b;
    }
 
    public static function mix(Color $color1, Color ...$colors) : Color{
        $colors[] = $color1;
        $count = count($colors);
 
        $a = $r = $g = $b = 0;
 
        foreach($colors as $color){
            $a += $color->a;
            $r += $color->r;
            $g += $color->g;
            $b += $color->b;
        }
 
        return new Color(intdiv($r, $count), intdiv($g, $count), intdiv($b, $count), intdiv($a, $count));
    }
 
    public static function fromRGB(int $code) : Color{
        return new Color(($code >> 16) & 0xff, ($code >> 8) & 0xff, $code & 0xff);
    }
 
    public static function fromARGB(int $code) : Color{
        return new Color(($code >> 16) & 0xff, ($code >> 8) & 0xff, $code & 0xff, ($code >> 24) & 0xff);
    }
 
    public function toARGB() : int{
        return ($this->a << 24) | ($this->r << 16) | ($this->g << 8) | $this->b;
    }
 
    public static function fromRGBA(int $code) : Color{
        return new Color(($code >> 24) & 0xff, ($code >> 16) & 0xff, ($code >> 8) & 0xff, $code & 0xff);
    }
 
    public function toRGBA() : int{
        return ($this->r << 24) | ($this->g << 16) | ($this->b << 8) | $this->a;
    }
 
    public function equals(self $other) : bool{
        return $this->a === $other->a && $this->r === $other->r && $this->g === $other->g && $this->b === $other->b;
    }
}