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2
1<?php
2/**
3 * Jingga
4 *
5 * PHP Version 8.1
6 *
7 * @package   phpOMS\Math\Geometry\Shape\D2
8 * @copyright Dennis Eichhorn
9 * @license   OMS License 2.0
10 * @version   1.0.0
11 * @link      https://jingga.app
12 */
13declare(strict_types=1);
14
15namespace phpOMS\Math\Geometry\Shape\D2;
16
17/**
18 * Triangle shape.
19 *
20 * @package phpOMS\Math\Geometry\Shape\D2
21 * @license OMS License 2.0
22 * @link    https://jingga.app
23 * @since   1.0.0
24 */
25final class Triangle implements D2ShapeInterface
26{
27    /**
28     * Area
29     *
30     *     .
31     *    /|\
32     *  a  h c
33     * /   |  \
34     * ----b---
35     *
36     * @param float $b Edge
37     * @param float $h Height
38     *
39     * @return float
40     *
41     * @since 1.0.0
42     */
43    public static function getSurface(float $b, float $h) : float
44    {
45        return $h * $b / 2;
46    }
47
48    /**
49     * Perimeter
50     *
51     * @param float $a Edge
52     * @param float $b Edge
53     * @param float $c Edge
54     *
55     * @return float
56     *
57     * @since 1.0.0
58     */
59    public static function getPerimeter(float $a, float $b, float $c) : float
60    {
61        return $a + $b + $c;
62    }
63
64    /**
65     * Diagonal
66     *
67     * @param float $area Area
68     * @param float $b    Edge
69     *
70     * @return float
71     *
72     * @since 1.0.0
73     */
74    public static function getHeight(float $area, float $b) : float
75    {
76        return 2 * $area / $b;
77    }
78
79    /**
80     * Calculate the hypothenuse
81     *
82     * @param mixed ...$vec Vector of values
83     *
84     * @return float
85     *
86     * @since 1.0.0
87     */
88    public static function getHypot(mixed ...$vec) : float
89    {
90        $hypot = 0.0;
91        foreach ($vec as $val) {
92            $hypot += $val * $val;
93        }
94
95        return \sqrt($hypot);
96    }
97}