library/Zend/Measure/Illumination.php

   1 <?php
   2 /**
   3  * Zend Framework
   4  *
   5  * LICENSE
   6  *
   7  * This source file is subject to the new BSD license that is bundled
   8  * with this package in the file LICENSE.txt.
   9  * It is also available through the world-wide-web at this URL:
  10  * http://framework.zend.com/license/new-bsd
  11  * If you did not receive a copy of the license and are unable to
  12  * obtain it through the world-wide-web, please send an email
  13  * to license@zend.com so we can send you a copy immediately.
  14  *
  15  * @category  Zend
  16  * @package   Zend_Measure
  17  * @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
  18  * @license   http://framework.zend.com/license/new-bsd     New BSD License
  19  * @version   $Id: Illumination.php 16220 2009-06-21 19:49:21Z thomas $
  20  */
  21
  22 /**
  23  * Implement needed classes
  24  */
  25 require_once 'Zend/Measure/Abstract.php';
  26 require_once 'Zend/Locale.php';
  27
  28 /**
  29  * Class for handling illumination conversions
  30  *
  31  * @category   Zend
  32  * @package    Zend_Measure
  33  * @subpackage Zend_Measure_Illumination
  34  * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
  35  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  36  */
  37 class Zend_Measure_Illumination extends Zend_Measure_Abstract
  38 {
  39     const STANDARD = 'LUX';
  40
  41     const FOOTCANDLE                  = 'FOOTCANDLE';
  42     const KILOLUX                     = 'KILOLUX';
  43     const LUMEN_PER_SQUARE_CENTIMETER = 'LUMEN_PER_SQUARE_CENTIMETER';
  44     const LUMEN_PER_SQUARE_FOOT       = 'LUMEN_PER_SQUARE_FOOT';
  45     const LUMEN_PER_SQUARE_INCH       = 'LUMEN_PER_SQUARE_INCH';
  46     const LUMEN_PER_SQUARE_METER      = 'LUMEN_PER_SQUARE_METER';
  47     const LUX                         = 'LUX';
  48     const METERCANDLE                 = 'METERCANDLE';
  49     const MILLIPHOT                   = 'MILLIPHOT';
  50     const NOX                         = 'NOX';
  51     const PHOT                        = 'PHOT';
  52
  53     /**
  54      * Calculations for all illumination units
  55      *
  56      * @var array
  57      */
  58     protected $_units = array(
  59         'FOOTCANDLE'              => array('10.7639104',   'fc'),
  60         'KILOLUX'                 => array('1000',         'klx'),
  61         'LUMEN_PER_SQUARE_CENTIMETER' => array('10000',    'lm/cm²'),
  62         'LUMEN_PER_SQUARE_FOOT'   => array('10.7639104',   'lm/ft²'),
  63         'LUMEN_PER_SQUARE_INCH'   => array('1550.0030976', 'lm/in²'),
  64         'LUMEN_PER_SQUARE_METER'  => array('1',            'lm/m²'),
  65         'LUX'                     => array('1',            'lx'),
  66         'METERCANDLE'             => array('1',            'metercandle'),
  67         'MILLIPHOT'               => array('10',           'mph'),
  68         'NOX'                     => array('0.001',        'nox'),
  69         'PHOT'                    => array('10000',        'ph'),
  70         'STANDARD'                => 'LUX'
  71     );
  72 }