pocketmine\level\generator\biome\Biome::lerpColor PHP 메소드

    private static function lerpColor($a, $b, $s)
    {
        $invs = 1 - $s;
        return [$a[0] * $invs + $b[0] * $s, $a[1] * $invs + $b[1] * $s, $a[2] * $invs + $b[2] * $s];
    }