Code Coverage for /home/runner/work/mediawiki-extensions-GLTFHandler/mediawiki-extensions-GLTFHandler/mediawiki/extensions/GLTFHandler/src/Parser/Matrix.php

1	<?php
2
3	namespace MediaWiki\Extension\GLTFHandler\Parser;
4
5	use function array_fill;
6
7	final class Matrix {
8
9	public const IDENTITY4 = [
10	1, 0, 0, 0,
11	0, 1, 0, 0,
12	0, 0, 1, 0,
13	0, 0, 0, 1
14	];
15
16	public static function multiply( array $matrix1, array $matrix2, int $size ): array {
17	$result = array_fill( 0, $size * $size, 0 );
18	for ( $row = 0; $row < $size; $row++ ) {
19	for ( $col = 0; $col < $size; $col++ ) {
20	for ( $k = 0; $k < $size; $k++ ) {
21	$result[$row * $size + $col] += $matrix1[$row * $size + $k] * $matrix2[$k * $size + $col];
22	}
23	}
24	}
25	return $result;
26	}
27
28	public static function transpose( array $matrix, int $size = 4 ): array {
29	$result = [];
30	for ( $i = 0; $i < $size; $i++ ) {
31	for ( $j = 0; $j < $size; $j++ ) {
32	$result[$i * $size + $j] = $matrix[$j * $size + $i];
33	}
34	}
35	return $result;
36	}
37
38	public static function quaternionToRotation( array $matrix ): array {
39	[ $x, $y, $z, $w ] = $matrix;
40	return [
41	1 - 2 * ( $y * $y + $z * $z ), 2 * ( $x * $y - $z * $w ), 2 * ( $x * $z + $y * $w ), 0,
42	2 * ( $x * $y + $z * $w ), 1 - 2 * ( $x * $x + $z * $z ), 2 * ( $y * $z - $x * $w ), 0,
43	2 * ( $x * $z - $y * $w ), 2 * ( $y * $z + $x * $w ), 1 - 2 * ( $x * $x + $y * $y ), 0,
44	0, 0, 0, 1
45	];
46	}
47
48	private function __construct() {
49	}
50	}