LinearFunction::fromTwoPoints() - Code Metrics - Inspection of "initial" - tmilos/cgi-calc - Measure and Improve Code Quality continuously with Scrutinizer

Completed

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by Milos

created 2016-04-05 13:36 UTC

LinearFunction::fromTwoPoints() A

↳ Parent: LinearFunction

Complexity

Conditions	2
Paths	2

Size

Total Lines	11
Code Lines	6

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
c	1
b	0
f	0
dl	0
loc	11
rs	9.4285
cc	2
eloc	6
nc	2
nop	2

<?php

namespace Cgi\Calc\Func;

use Cgi\Calc\FunctionInterface;
use Cgi\Calc\Point;

class LinearFunction implements FunctionInterface
{
    /** @var float */
    private $k;

    /** @var float */
    private $n;

    /**
     * @param float $k
     * @param float $n
     */
    public function __construct($k, $n)
    {
        $this->k = $k;
        $this->n = $n;
    }

    /**
     * @param Point $a
     * @param Point $b
     *
     * @return LinearFunction
     *
     * @throws \RuntimeException When $a and $b points have same x
     */
    public static function fromTwoPoints(Point $a, Point $b)
    {
        if ($a->getX() === $b->getX()) {
            throw new \RuntimeException('Line can be defined only by two points with different X');
        }

        $k = ($a->getY() - $b->getY()) / ($a->getX() - $b->getX());
        $n = $a->getY() - $k * $a->getX();

        return new LinearFunction($k, $n);
    }

    /**
     * @param float $x
     *
     * @return float
     */
    public function evaluate($x)
    {
        return $this->k * $x + $this->n;
    }
}


1			<?php
2
3			namespace Cgi\Calc\Func;
4
5			use Cgi\Calc\FunctionInterface;
6			use Cgi\Calc\Point;
7
8			class LinearFunction implements FunctionInterface
9			{
10			/** @var float */
11			private $k;
12
13			/** @var float */
14			private $n;
15
16			/**
17			* @param float $k
18			* @param float $n
19			*/
20			public function __construct($k, $n)
21			{
22			$this->k = $k;
23			$this->n = $n;
24			}
25
26			/**
27			* @param Point $a
28			* @param Point $b
29			*
30			* @return LinearFunction
31			*
32			* @throws \RuntimeException When $a and $b points have same x
33			*/
34			public static function fromTwoPoints(Point $a, Point $b)
35			{
36			if ($a->getX() === $b->getX()) {
37			throw new \RuntimeException('Line can be defined only by two points with different X');
38			}
39
40			$k = ($a->getY() - $b->getY()) / ($a->getX() - $b->getX());
41			$n = $a->getY() - $k * $a->getX();
42
43			return new LinearFunction($k, $n);
44			}
45
46			/**
47			* @param float $x
48			*
49			* @return float
50			*/
51			public function evaluate($x)
52			{
53			return $this->k * $x + $this->n;
54			}
55			}
56

tmilos / cgi-calc

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LinearFunction::fromTwoPoints() A

Complexity

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Duplication

Importance

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