File Content: TransformationMatrix.php <?php declare(strict_types = 1); namespace BaconQrCode\Renderer\Image; final class TransformationMatrix { /** * @var float[] */ private $values; public function __construct() { $this->values = [1, 0, 0, 1, 0, 0]; } public function multiply(self $other) : self { $matrix = new self(); $matrix->values[0] = $this->values[0] * $other->values[0] + $this->values[2] * $other->values[1]; $matrix->values[1] = $this->values[1] * $other->values[0] + $this->values[3] * $other->values[1]; $matrix->values[2] = $this->values[0] * $other->values[2] + $this->values[2] * $other->values[3]; $matrix->values[3] = $this->values[1] * $other->values[2] + $this->values[3] * $other->values[3]; $matrix->values[4] = $this->values[0] * $other->values[4] + $this->values[2] * $other->values[5] + $this->values[4]; $matrix->values[5] = $this->values[1] * $other->values[4] + $this->values[3] * $other->values[5] + $this->values[5]; return $matrix; } public static function scale(float $size) : self { $matrix = new self(); $matrix->values = [$size, 0, 0, $size, 0, 0]; return $matrix; } public static function translate(float $x, float $y) : self { $matrix = new self(); $matrix->values = [1, 0, 0, 1, $x, $y]; return $matrix; } public static function rotate(int $degrees) : self { $matrix = new self(); $rad = deg2rad($degrees); $matrix->values = [cos($rad), sin($rad), -sin($rad), cos($rad), 0, 0]; return $matrix; } /** * Applies this matrix onto a point and returns the resulting viewport point. * * @return float[] */ public function apply(float $x, float $y) : array { return [ $x * $this->values[0] + $y * $this->values[2] + $this->values[4], $x * $this->values[1] + $y * $this->values[3] + $this->values[5], ]; } } Submit