Spatie\Color\Convert

Complexity

Total Complexity

20

Size/Duplication

Total Lines	77
Duplicated Lines	23.38 %

Coupling/Cohesion

Components	0
Dependencies	0

Importance

Changes

0

4 Methods

Rating	Name	Duplication	Size	Complexity
A	hexChannelToRgbChannel()	0	4	1
A	rgbChannelToHexChannel()	0	4	1
C	hslValueToRgb()	18	32	13
A	rgbValueToHsl()	0	31	5

<?php

namespace Spatie\Color;

class Convert
{
    public static function hexChannelToRgbChannel(string $hexValue): int
    {
        return hexdec($hexValue);
    }

    public static function rgbChannelToHexChannel(int $rgbValue): string
    {
        return str_pad(dechex($rgbValue), 2, '0', STR_PAD_LEFT);
    }

    public static function hslValueToRgb(float $hue, float $saturation, float $lightness): array
    {
        $c = (1 - abs(2 * ($lightness / 100) - 1)) * ($saturation / 100);
        $x = $c * (1 - abs(fmod($hue / 60, 2) - 1));
        $m = ($lightness / 100) - ($c / 2);

        $h = (360 + ($hue % 360)) % 360;  // hue values can be less than 0 and greater than 360. This normalises them into the range 0-360.

        if ($h > 0 && $h <= 60) {

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            return [round(($c + $m) * 255), round(($x + $m) * 255), round($m * 255)];
        }

        if ($h > 60 && $h <= 120) {

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            return [round(($x + $m) * 255), round(($c + $m) * 255), round($m * 255)];
        }

        if ($h > 120 && $h <= 180) {

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            return [round($m * 255), round(($c + $m) * 255), round(($x + $m) * 255)];
        }

        if ($h > 180 && $h <= 240) {

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            return [round($m * 255), round(($x + $m) * 255), round(($c + $m) * 255)];
        }

        if ($h > 240 && $h <= 300) {

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            return [round(($x + $m) * 255), round($m * 255), round(($c + $m) * 255)];
        }

        if ($h > 300 && $h <= 360) {

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            return [round(($c + $m) * 255), round($m * 255), round(($x + $m) * 255)];
        }
    }

    public static function rgbValueToHsl($red, $green, $blue)
    {
        $r = $red / 255;
        $g = $green / 255;
        $b = $blue / 255;

        $cmax = max($r, $g, $b);
        $cmin = min($r, $g, $b);
        $delta = $cmax - $cmin;

        $hue = 0;
        if ($delta !== 0) {
            if ($r === $cmax) {
                $hue = 60 * fmod(($g - $b) / $delta, 6);
            }

            if ($g === $cmax) {
                $hue = 60 * ((($b - $r) / $delta) + 2);
            }

            if ($b === $cmax) {
                $hue = 60 * ((($r - $g) / $delta) + 4);
            }
        }

        $lightness = ($cmax + $cmin) / 2;

        $saturation = $delta / (1 - abs((2 * $lightness) - 1));

        return [$hue, min($saturation, 1) * 100, min($lightness, 1) * 100];
    }
}