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<?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* @category Zend
* @package Zend_Measure
* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id: Illumination.php 16220 2009-06-21 19:49:21Z thomas $
*/
/**
* Implement needed classes
*/
require_once 'Zend/Measure/Abstract.php';
require_once 'Zend/Locale.php';
/**
* Class for handling illumination conversions
*
* @category Zend
* @package Zend_Measure
* @subpackage Zend_Measure_Illumination
* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Measure_Illumination extends Zend_Measure_Abstract
{
const STANDARD = 'LUX';
const FOOTCANDLE = 'FOOTCANDLE';
const KILOLUX = 'KILOLUX';
const LUMEN_PER_SQUARE_CENTIMETER = 'LUMEN_PER_SQUARE_CENTIMETER';
const LUMEN_PER_SQUARE_FOOT = 'LUMEN_PER_SQUARE_FOOT';
const LUMEN_PER_SQUARE_INCH = 'LUMEN_PER_SQUARE_INCH';
const LUMEN_PER_SQUARE_METER = 'LUMEN_PER_SQUARE_METER';
const LUX = 'LUX';
const METERCANDLE = 'METERCANDLE';
const MILLIPHOT = 'MILLIPHOT';
const NOX = 'NOX';
const PHOT = 'PHOT';
/**
* Calculations for all illumination units
*
* @var array
*/
protected $_units = array(
'FOOTCANDLE' => array('10.7639104', 'fc'),
'KILOLUX' => array('1000', 'klx'),
'LUMEN_PER_SQUARE_CENTIMETER' => array('10000', 'lm/cm²'),
'LUMEN_PER_SQUARE_FOOT' => array('10.7639104', 'lm/ft²'),
'LUMEN_PER_SQUARE_INCH' => array('1550.0030976', 'lm/in²'),
'LUMEN_PER_SQUARE_METER' => array('1', 'lm/m²'),
'LUX' => array('1', 'lx'),
'METERCANDLE' => array('1', 'metercandle'),
'MILLIPHOT' => array('10', 'mph'),
'NOX' => array('0.001', 'nox'),
'PHOT' => array('10000', 'ph'),
'STANDARD' => 'LUX'
);
}
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