source-class-Com.Tecnick.Color.Model.Rgb

It appears that you are using AdBlocking software. The cost of running this website is covered by advertisements. If you like it please feel free to a small amount of money to secure the future of this website.
  1:   2:   3:   4:   5:   6:   7:   8:   9:  10:  11:  12:  13:  14:  15:  16:  17:  18:  19:  20:  21:  22:  23:  24:  25:  26:  27:  28:  29:  30:  31:  32:  33:  34:  35:  36:  37:  38:  39:  40:  41:  42:  43:  44:  45:  46:  47:  48:  49:  50:  51:  52:  53:  54:  55:  56:  57:  58:  59:  60:  61:  62:  63:  64:  65:  66:  67:  68:  69:  70:  71:  72:  73:  74:  75:  76:  77:  78:  79:  80:  81:  82:  83:  84:  85:  86:  87:  88:  89:  90:  91:  92:  93:  94:  95:  96:  97:  98:  99: 100: 101: 102: 103: 104: 105: 106: 107: 108: 109: 110: 111: 112: 113: 114: 115: 116: 117: 118: 119: 120: 121: 122: 123: 124: 125: 126: 127: 128: 129: 130: 131: 132: 133: 134: 135: 136: 137: 138: 139: 140: 141: 142: 143: 144: 145: 146: 147: 148: 149: 150: 151: 152: 153: 154: 155: 156: 157: 158: 159: 160: 161: 162: 163: 164: 165: 166: 167: 168: 169: 170: 171: 172: 173: 174: 175: 176: 177: 178: 179: 180: 181: 182: 183: 184: 185: 186: 187: 188: 189: 190: 191: 192: 193: 194: 195: 196: 197: 198: 199: 200: 201: 202: 203: 204: 205: 206: 207: 208: 209: 210: 211: 212: 213: 214: 215: 216: 217: 218: 219: 220: 221: 222: 223: 224: 225: 226: 227: 228: 229: 230: 231: 232: 233: 234: 235: 236: 237: 238: 239: 240: 241: 242: 243: 244: 245: 246: 247: 248: 249: 250: 251: 252: 253: 254: 255: 256: 257: 258: 259: 260: 261: 262: 263: 264: 265: 266: 267: 268: 269: 270: 271: 272: 273: 274: 275: 276: 
<?php
/**
 * Rgb.php
 *
 * @since       2015-02-21
 * @category    Library
 * @package     Color
 * @author      Nicola Asuni <info@tecnick.com>
 * @copyright   2015-2015 Nicola Asuni - Tecnick.com LTD
 * @license     http://www.gnu.org/copyleft/lesser.html GNU-LGPL v3 (see LICENSE.TXT)
 * @link        https://github.com/tecnickcom/tc-lib-color
 *
 * This file is part of tc-lib-color software library.
 */

namespace Com\Tecnick\Color\Model;

/**
 * Com\Tecnick\Color\Model\Rgb
 *
 * RGB Color Model class
 *
 * @since       2015-02-21
 * @category    Library
 * @package     Color
 * @author      Nicola Asuni <info@tecnick.com>
 * @copyright   2015-2015 Nicola Asuni - Tecnick.com LTD
 * @license     http://www.gnu.org/copyleft/lesser.html GNU-LGPL v3 (see LICENSE.TXT)
 * @link        https://github.com/tecnickcom/tc-lib-color
 */
class Rgb extends \Com\Tecnick\Color\Model implements \Com\Tecnick\Color\Model\Template
{
    /**
     * Color Model type
     *
     * @var string
     */
    protected $type = 'RGB';

    /**
     * Value of the Red color component [0..1]
     *
     * @var float
     */
    protected $cmp_red = 0.0;

    /**
     * Value of the Green color component [0..1]
     *
     * @var float
     */
    protected $cmp_green = 0.0;

    /**
     * Value of the Blue color component [0..1]
     *
     * @var float
     */
    protected $cmp_blue = 0.0;

    /**
     * Get an array with all color components
     *
     * @return array with keys ('R', 'G', 'B', 'A')
     */
    public function getArray()
    {
        return array(
            'R' => $this->cmp_red,
            'G' => $this->cmp_green,
            'B' => $this->cmp_blue,
            'A' => $this->cmp_alpha
        );
    }

    /**
     * Get an array with color components values normalized between 0 and $max.
     * NOTE: the alpha and other fraction component values are kept in the [0..1] range.
     *
     * @param int $max Maximum value to return (reference value)
     *
     * @return array with keys ('R', 'G', 'B', 'A')
     */
    public function getNormalizedArray($max)
    {
        return array(
            'R' => $this->getNormalizedValue($this->cmp_red, $max),
            'G' => $this->getNormalizedValue($this->cmp_green, $max),
            'B' => $this->getNormalizedValue($this->cmp_blue, $max),
            'A' => $this->cmp_alpha
        );
    }

    /**
     * Get the CSS representation of the color: rgba(R, G, B, A)
     * NOTE: Supported since CSS3 and above.
     *       Use getHexadecimalColor() for CSS1 and CSS2
     *
     * @return string
     */
    public function getCssColor()
    {
        return 'rgba('
            .$this->getNormalizedValue($this->cmp_red, 100).'%,'
            .$this->getNormalizedValue($this->cmp_green, 100).'%,'
            .$this->getNormalizedValue($this->cmp_blue, 100).'%,'
            .$this->cmp_alpha
            .')';
    }

    /**
     * Get the color format used in Acrobat JavaScript
     * NOTE: the alpha channel is omitted from this representation unless is 0 = transparent
     *
     * @return string
     */
    public function getJsPdfColor()
    {
        if ($this->cmp_alpha == 0) {
            return '["T"]'; // transparent color
        }
        return sprintf('["RGB",%F,%F,%F]', $this->cmp_red, $this->cmp_green, $this->cmp_blue);
    }

    /**
     * Get a space separated string with color component values.
     *
     * @return string
     */
    public function getComponentsString()
    {
        return sprintf('%F %F %F', $this->cmp_red, $this->cmp_green, $this->cmp_blue);
    }

    /**
     * Get the color components format used in PDF documents (RGB)
     * NOTE: the alpha channel is omitted
     *
     * @param bool $stroke True for stroking (lines, drawing) and false for non-stroking (text and area filling).
     *
     * @return string
     */
    public function getPdfColor($stroke = false)
    {
        $mode = 'rg';
        if ($stroke) {
            $mode = strtoupper($mode);
        }
        return $this->getComponentsString().' '.$mode."\n";
    }

    /**
     * Get an array with Gray color components
     *
     * @return array with keys ('gray')
     */
    public function toGrayArray()
    {
        // convert using the SMPTE 295M-1997 standard conversion constants
        return array(
            'gray'  => (max(0, min(
                1,
                ((0.2126 * $this->cmp_red) + (0.7152 * $this->cmp_green) + (0.0722 * $this->cmp_blue))
            ))),
            'alpha' => $this->cmp_alpha
        );
    }

    /**
     * Get an array with RGB color components
     *
     * @return array with keys ('red', 'green', 'blue', 'alpha')
     */
    public function toRgbArray()
    {
        return array(
            'red'   => $this->cmp_red,
            'green' => $this->cmp_green,
            'blue'  => $this->cmp_blue,
            'alpha' => $this->cmp_alpha
        );
    }

    /**
     * Get an array with HSL color components
     *
     * @return array with keys ('hue', 'saturation', 'lightness', 'alpha')
     */
    public function toHslArray()
    {
        $min = min($this->cmp_red, $this->cmp_green, $this->cmp_blue);
        $max = max($this->cmp_red, $this->cmp_green, $this->cmp_blue);
        $lightness = (($min + $max) / 2);
        if ($min == $max) {
            $saturation = 0;
            $hue = 0;
        } else {
            $diff = ($max - $min);
            if ($lightness < 0.5) {
                $saturation = ($diff / ($max + $min));
            } else {
                $saturation = ($diff / (2.0 - $max - $min));
            }
            switch ($max) {
                case $this->cmp_red:
                    $dgb = ($this->cmp_green - $this->cmp_blue);
                    $hue = ($dgb / $diff) + (($dgb < 0) ? 6 : 0);
                    break;
                case $this->cmp_green:
                    $hue = (2.0 + (($this->cmp_blue - $this->cmp_red) / $diff));
                    break;
                case $this->cmp_blue:
                    $hue = (4.0 + (($this->cmp_red - $this->cmp_green) / $diff));
                    break;
            }
            $hue /= 6; // 6 = 360 / 60
        }
        return array(
            'hue'        => max(0, min(1, $hue)),
            'saturation' => max(0, min(1, $saturation)),
            'lightness'  => max(0, min(1, $lightness)),
            'alpha'      => $this->cmp_alpha
        );
    }

    /**
     * Get an array with CMYK color components
     *
     * @return array with keys ('cyan', 'magenta', 'yellow', 'key', 'alpha')
     */
    public function toCmykArray()
    {
        $cyan = (1 - $this->cmp_red);
        $magenta = (1 - $this->cmp_green);
        $yellow = (1 - $this->cmp_blue);
        $key = 1;
        if ($cyan < $key) {
            $key = $cyan;
        }
        if ($magenta < $key) {
            $key = $magenta;
        }
        if ($yellow < $key) {
            $key = $yellow;
        }
        if ($key == 1) {
            // black
            $cyan = 0;
            $magenta = 0;
            $yellow = 0;
        } else {
            $cyan = (($cyan - $key) / (1 - $key));
            $magenta = (($magenta - $key) / (1 - $key));
            $yellow = (($yellow - $key) / (1 - $key));
        }
        return array(
            'cyan'    => max(0, min(1, $cyan)),
            'magenta' => max(0, min(1, $magenta)),
            'yellow'  => max(0, min(1, $yellow)),
            'key'     => max(0, min(1, $key)),
            'alpha'   => $this->cmp_alpha
        );
    }

    /**
     * Invert the color
     */
    public function invertColor()
    {
        $this->cmp_red   = (1 - $this->cmp_red);
        $this->cmp_green = (1 - $this->cmp_green);
        $this->cmp_blue  = (1 - $this->cmp_blue);
        return $this;
    }
}
 

© 2004-2017 – Nicola Asuni - Tecnick.com - All rights reserved.
about - disclaimer - privacy