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<?php |
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namespace SixtyNine\DataTypes; |
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/** |
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* Class Vector |
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* @package SixtyNine\DataTypes |
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* @SuppressWarnings(PHPMD.ShortVariable) |
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*/ |
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class Vector |
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{ |
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/** |
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* @var float |
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*/ |
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protected $x; |
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/** |
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* @var float |
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*/ |
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protected $y; |
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/** |
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* Constructor |
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* @param float $x |
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* @param float $y |
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*/ |
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public function __construct($x = 0.0, $y = 0.0) |
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{ |
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$this->x = $x; |
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$this->y = $y; |
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} |
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/** |
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* Factory method. |
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* @param float $x |
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* @param float $y |
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* @return Vector |
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*/ |
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public static function create($x = 0.0, $y = 0.0) : Vector |
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{ |
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return new self($x, $y); |
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} |
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/** |
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* Get Y coordinate. |
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* @param float $x |
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* @return Vector |
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*/ |
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public function setX($x) : Vector |
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{ |
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$this->x = $x; |
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return $this; |
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} |
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/** |
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* Get X coordinate. |
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* @return float |
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*/ |
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public function getX() : float |
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{ |
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return $this->x; |
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} |
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/** |
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* Set Y coordinate. |
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* @param float $y |
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* @return Vector |
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*/ |
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public function setY($y) : Vector |
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{ |
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$this->y = $y; |
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return $this; |
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} |
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/** |
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* Get Y coordinate. |
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* @return float |
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*/ |
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public function getY() : float |
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{ |
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return $this->y; |
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} |
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/** |
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* Length of vector (magnitude) |
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* @return float |
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*/ |
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public function length() : float |
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{ |
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return sqrt($this->x * $this->x + $this->y * $this->y); |
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} |
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/** |
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* Scalar displacement. |
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* @param float $deltaX |
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* @param float $deltaY |
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* @return Vector |
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*/ |
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public function move($deltaX, $deltaY) : Vector |
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{ |
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return new self($this->x + $deltaX, $this->y + $deltaY); |
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} |
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/** |
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* Scalar multiplication. |
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* @param float $factor |
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* @return Vector |
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*/ |
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public function mult($factor) : Vector |
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{ |
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return new self($this->x * $factor, $this->y * $factor); |
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} |
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/** |
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* Vector addition. |
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* @param Vector $other |
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* @return Vector |
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*/ |
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public function add(Vector $other) : Vector |
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{ |
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return new self($this->x + $other->getX(), $this->y + $other->getY()); |
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} |
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/** |
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* Dot product. |
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* @param Vector $other |
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* @return float |
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*/ |
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public function dot(Vector $other) : float |
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{ |
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return $this->x * $other->getX() + $this->y * $other->getY(); |
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} |
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/** |
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* @param Box $box |
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* @param bool $strict |
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* @return bool |
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* @SuppressWarnings(PHPMD.BooleanArgumentFlag) |
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*/ |
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public function inside(Box $box, $strict = false) : bool |
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{ |
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$class = Comparators::class; |
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$comparator = $strict ? array($class, 'strictComparator') : array($class, 'nonStrictComparator'); |
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return $comparator($box->getLeft(), $this->x) |
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&& $comparator($this->x, $box->getRight()) |
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&& $comparator($box->getTop(), $this->y) |
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&& $comparator($this->y, $box->getBottom()); |
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} |
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/** |
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* @return string |
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*/ |
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1 |
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public function __toString() : string |
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{ |
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return sprintf('[%s, %s]', $this->x, $this->y); |
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} |
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public function serialize() : string |
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{ |
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return json_encode([ |
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'x' => $this->x, |
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'y' => $this->y, |
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]); |
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} |
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} |
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sixty-nine /
php-data-types
