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<?php |
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namespace projectcleverweb\color\convert; |
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class rgb implements \projectcleverweb\color\interfaces\converter { |
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use \projectcleverweb\color\traits\converter; |
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protected static $valid_keys = array( |
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'r', |
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'g', |
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'b' |
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); |
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protected static $default_value = array( |
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'r' => 0, |
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'g' => 0, |
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'b' => 0 |
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); |
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public static function to_rgb($input) :array { |
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return static::_validate_array_input($input); |
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} |
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public static function to_hex($input) :string { |
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$rgb = static::_validate_array_input($input); |
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return strtoupper( |
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str_pad(dechex($rgb['r']), 2, '0', STR_PAD_LEFT) |
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.str_pad(dechex($rgb['g']), 2, '0', STR_PAD_LEFT) |
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.str_pad(dechex($rgb['b']), 2, '0', STR_PAD_LEFT) |
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); |
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} |
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public static function to_cmyk($input) :array { |
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$rgb = static::_validate_array_input($input); |
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$rgbp = array( |
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'r' => $rgb['r'] / 255 * 100, |
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'g' => $rgb['g'] / 255 * 100, |
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'b' => $rgb['b'] / 255 * 100 |
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); |
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$k = 100 - max($rgbp); |
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return [ |
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'c' => ((100 - $rgbp['r'] - $k) / (100 - $k)) * 100, |
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'm' => ((100 - $rgbp['g'] - $k) / (100 - $k)) * 100, |
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'y' => ((100 - $rgbp['b'] - $k) / (100 - $k)) * 100, |
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'k' => $k |
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]; |
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} |
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public static function to_hsl($input) :array { |
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$rgb = static::_validate_array_input($input); |
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$r = $rgb['r'] / 255; |
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$g = $rgb['g'] / 255; |
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$b = $rgb['b'] / 255; |
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$min = min($r, $g, $b); |
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$max = max($r, $g, $b); |
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$delta = $max - $min; |
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$h = 0; |
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$s = 0; |
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$l = ($max + $min) / 2; |
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if ($max != $min) { |
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$s = $delta / ($max + $min); |
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if ($l >= 0.5) { |
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$s = $delta / (2 - $max - $min); |
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} |
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static::_rgbhsl_hue($h, $r, $g, $b, $max, $delta); |
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} |
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return [ |
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'h' => $h * 360, |
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's' => $s * 100, |
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'l' => $l * 100 |
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]; |
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} |
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public static function to_hsb($input) :array { |
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$rgb = static::_validate_array_input($input); |
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$r = $rgb['r'] / 255; |
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$g = $rgb['g'] / 255; |
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$b = $rgb['b'] / 255; |
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$max = max($r, $g, $b); |
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$min = min($r, $g, $b); |
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$v = $max; |
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$d = $max - $min; |
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$s = \projectcleverweb\color\regulate::div($d, $max); |
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$h = 0; // achromatic |
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if ($max != $min) { |
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static::_rgbhsl_hue($h, $r, $g, $b, $max, $d); |
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} |
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$h = $h * 360; |
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$s = $s * 100; |
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$v = $v * 100; |
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return ['h' => $h, 's' => $s, 'b' => $v]; |
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} |
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} |
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ProjectCleverWeb /
PHP-Color
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This check looks for multiple assignments in successive lines of code. It will report an issue if the operators are not in a straight line.
To visualize
will produce issues in the first and second line, while this second example
will produce no issues.