> */ private $bytes; /** * Width of the matrix. * * @var int */ private $width; /** * Height of the matrix. * * @var int */ private $height; public function __construct(int $width, int $height) { $this->height = $height; $this->width = $width; $this->bytes = new SplFixedArray($height); for ($y = 0; $y < $height; ++$y) { $this->bytes[$y] = SplFixedArray::fromArray(array_fill(0, $width, 0)); } } /** * Gets the width of the matrix. */ public function getWidth() : int { return $this->width; } /** * Gets the height of the matrix. */ public function getHeight() : int { return $this->height; } /** * Gets the internal representation of the matrix. * * @return SplFixedArray> */ public function getArray() : SplFixedArray { return $this->bytes; } /** * @return Traversable */ public function getBytes() : Traversable { foreach ($this->bytes as $row) { foreach ($row as $byte) { yield $byte; } } } /** * Gets the byte for a specific position. */ public function get(int $x, int $y) : int { return $this->bytes[$y][$x]; } /** * Sets the byte for a specific position. */ public function set(int $x, int $y, int $value) : void { $this->bytes[$y][$x] = $value; } /** * Clears the matrix with a specific value. */ public function clear(int $value) : void { for ($y = 0; $y < $this->height; ++$y) { for ($x = 0; $x < $this->width; ++$x) { $this->bytes[$y][$x] = $value; } } } public function __clone() { $this->bytes = clone $this->bytes; foreach ($this->bytes as $index => $row) { $this->bytes[$index] = clone $row; } } /** * Returns a string representation of the matrix. */ public function __toString() : string { $result = ''; for ($y = 0; $y < $this->height; $y++) { for ($x = 0; $x < $this->width; $x++) { switch ($this->bytes[$y][$x]) { case 0: $result .= ' 0'; break; case 1: $result .= ' 1'; break; default: $result .= ' '; break; } } $result .= "\n"; } return $result; } }