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<?php
declare(strict_types=1);
namespace AlecRabbit\Spinner\Core\Revolver\A;
use AlecRabbit\Spinner\Contract\IFrame;
use AlecRabbit\Spinner\Contract\IFrameCollection;
use AlecRabbit\Spinner\Contract\IInterval;
use AlecRabbit\Spinner\Core\Revolver\Contract\IFrameCollectionRevolver;
use AlecRabbit\Spinner\Exception\InvalidArgumentException;
abstract class AFrameCollectionRevolver extends ARevolver implements IFrameCollectionRevolver
{
protected int $count = 0;
protected int $offset = 0;
/**
* @throws InvalidArgumentException
*/
public function __construct(
protected IFrameCollection $frames,
IInterval $interval,
) {
parent::__construct($interval);
$this->count = $this->frames->count();
$this->assertIsNotEmpty();
}
protected function assertIsNotEmpty(): void
if (0 === $this->count) {
throw new InvalidArgumentException(
sprintf('%s: Frame collection is empty.', static::class)
);
protected function next(float $dt = null): void
if (1 === $this->count || ++$this->offset === $this->count) {
$this->offset = 0;
protected function current(): IFrame
return $this->frames->get($this->offset);
alecrabbit /
php-console-spinner
