2025-07-15 08:50:42 +00:00

73 lines
2.7 KiB
PHP

<?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) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id$
*/
/**
* 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) 2005-2015 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
{
public const STANDARD = 'LUX';
public const FOOTCANDLE = 'FOOTCANDLE';
public const KILOLUX = 'KILOLUX';
public const LUMEN_PER_SQUARE_CENTIMETER = 'LUMEN_PER_SQUARE_CENTIMETER';
public const LUMEN_PER_SQUARE_FOOT = 'LUMEN_PER_SQUARE_FOOT';
public const LUMEN_PER_SQUARE_INCH = 'LUMEN_PER_SQUARE_INCH';
public const LUMEN_PER_SQUARE_METER = 'LUMEN_PER_SQUARE_METER';
public const LUX = 'LUX';
public const METERCANDLE = 'METERCANDLE';
public const MILLIPHOT = 'MILLIPHOT';
public const NOX = 'NOX';
public const PHOT = 'PHOT';
/**
* Calculations for all illumination units
*
* @var array
*/
protected $_units = [
'FOOTCANDLE' => ['10.7639104', 'fc'],
'KILOLUX' => ['1000', 'klx'],
'LUMEN_PER_SQUARE_CENTIMETER' => ['10000', 'lm/cm²'],
'LUMEN_PER_SQUARE_FOOT' => ['10.7639104', 'lm/ft²'],
'LUMEN_PER_SQUARE_INCH' => ['1550.0030976', 'lm/in²'],
'LUMEN_PER_SQUARE_METER' => ['1', 'lm/m²'],
'LUX' => ['1', 'lx'],
'METERCANDLE' => ['1', 'metercandle'],
'MILLIPHOT' => ['10', 'mph'],
'NOX' => ['0.001', 'nox'],
'PHOT' => ['10000', 'ph'],
'STANDARD' => 'LUX'
];
}