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<?php
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/**
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 * This file is part of FPDI
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 *
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 * @package   setasign\Fpdi
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 * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
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 * @license   http://opensource.org/licenses/mit-license The MIT License
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 */
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namespace setasign\Fpdi\Math;
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/**
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 * A simple 2D-Matrix class
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 */
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class Matrix
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{
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    /**
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     * @var float
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     */
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    protected $a;
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    /**
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     * @var float
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     */
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    protected $b;
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    /**
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     * @var float
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     */
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    protected $c;
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    /**
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     * @var float
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     */
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    protected $d;
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    /**
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     * @var float
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     */
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    protected $e;
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    /**
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     * @var float
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     */
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    protected $f;
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    /**
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     * @param int|float $a
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     * @param int|float $b
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     * @param int|float $c
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     * @param int|float $d
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     * @param int|float $e
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     * @param int|float $f
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     */
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    public function __construct($a = 1, $b = 0, $c = 0, $d = 1, $e = 0, $f = 0)
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    {
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        $this->a = (float)$a;
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        $this->b = (float)$b;
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        $this->c = (float)$c;
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        $this->d = (float)$d;
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        $this->e = (float)$e;
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        $this->f = (float)$f;
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    }
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    /**
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     * @return float[]
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     */
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    public function getValues()
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    {
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        return [$this->a, $this->b, $this->c, $this->d, $this->e, $this->f];
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    }
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    /**
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     * @param Matrix $by
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     * @return Matrix
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     */
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    public function multiply(self $by)
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    {
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        $a =
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            $this->a * $by->a
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            + $this->b * $by->c
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            //+ 0 * $by->e
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        ;
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        $b =
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            $this->a * $by->b
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            + $this->b * $by->d
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            //+ 0 * $by->f
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        ;
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        $c =
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            $this->c * $by->a
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            + $this->d * $by->c
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            //+ 0 * $by->e
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        ;
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        $d =
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            $this->c * $by->b
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            + $this->d * $by->d
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            //+ 0 * $by->f
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        ;
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        $e =
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            $this->e * $by->a
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            + $this->f * $by->c
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            + /*1 * */$by->e;
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        $f =
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            $this->e * $by->b
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            + $this->f * $by->d
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            + /*1 * */$by->f;
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        return new self($a, $b, $c, $d, $e, $f);
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    }
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}