2019-07-17 20:08:50 +00:00
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<?php
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/**
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* Zend Framework
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*
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* LICENSE
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*
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* This source file is subject to the new BSD license that is bundled
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* with this package in the file LICENSE.txt.
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* It is also available through the world-wide-web at this URL:
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* http://framework.zend.com/license/new-bsd
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* If you did not receive a copy of the license and are unable to
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* obtain it through the world-wide-web, please send an email
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* to license@zend.com so we can send you a copy immediately.
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*
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* @category Zend
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* @package Zend_Measure
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2019-07-17 20:19:00 +00:00
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* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
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2019-07-17 20:08:50 +00:00
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* @license http://framework.zend.com/license/new-bsd New BSD License
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2019-07-17 20:19:00 +00:00
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* @version $Id: Lightness.php 16220 2009-06-21 19:49:21Z thomas $
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2019-07-17 20:08:50 +00:00
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*/
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/**
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* Implement needed classes
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*/
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require_once 'Zend/Measure/Abstract.php';
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require_once 'Zend/Locale.php';
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/**
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* Class for handling temperature conversions
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*
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* @category Zend
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* @package Zend_Measure
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* @subpackage Zend_Measure_Lightness
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2019-07-17 20:19:00 +00:00
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* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
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2019-07-17 20:08:50 +00:00
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* @license http://framework.zend.com/license/new-bsd New BSD License
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*/
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class Zend_Measure_Lightness extends Zend_Measure_Abstract
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{
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const STANDARD = 'CANDELA_PER_SQUARE_METER';
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const APOSTILB = 'APOSTILB';
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const BLONDEL = 'BLONDEL';
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const CANDELA_PER_SQUARE_CENTIMETER = 'CANDELA_PER_SQUARE_CENTIMETER';
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const CANDELA_PER_SQUARE_FOOT = 'CANDELA_PER_SQUARE_FOOT';
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const CANDELA_PER_SQUARE_INCH = 'CANDELA_PER_SQUARE_INCH';
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const CANDELA_PER_SQUARE_METER = 'CANDELA_PER_SQUARE_METER';
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const FOOTLAMBERT = 'FOOTLAMBERT';
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const KILOCANDELA_PER_SQUARE_CENTIMETER = 'KILOCANDELA_PER_SQUARE_CENTIMETER';
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const KILOCANDELA_PER_SQUARE_FOOT = 'KILOCANDELA_PER_SQUARE_FOOT';
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const KILOCANDELA_PER_SQUARE_INCH = 'KILOCANDELA_PER_SQUARE_INCH';
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const KILOCANDELA_PER_SQUARE_METER = 'KILOCANDELA_PER_SQUARE_METER';
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const LAMBERT = 'LAMBERT';
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const MILLILAMBERT = 'MILLILAMBERT';
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const NIT = 'NIT';
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const STILB = 'STILB';
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/**
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* Calculations for all lightness units
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*
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* @var array
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*/
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protected $_units = array(
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'APOSTILB' => array('0.31830989', 'asb'),
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'BLONDEL' => array('0.31830989', 'blondel'),
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'CANDELA_PER_SQUARE_CENTIMETER' => array('10000', 'cd/cm²'),
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'CANDELA_PER_SQUARE_FOOT' => array('10.76391', 'cd/ft²'),
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'CANDELA_PER_SQUARE_INCH' => array('1550.00304', 'cd/in²'),
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'CANDELA_PER_SQUARE_METER' => array('1', 'cd/m²'),
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'FOOTLAMBERT' => array('3.4262591', 'ftL'),
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'KILOCANDELA_PER_SQUARE_CENTIMETER' => array('10000000', 'kcd/cm²'),
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'KILOCANDELA_PER_SQUARE_FOOT' => array('10763.91', 'kcd/ft²'),
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'KILOCANDELA_PER_SQUARE_INCH' => array('1550003.04', 'kcd/in²'),
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'KILOCANDELA_PER_SQUARE_METER' => array('1000', 'kcd/m²'),
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'LAMBERT' => array('3183.0989', 'L'),
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'MILLILAMBERT' => array('3.1830989', 'mL'),
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'NIT' => array('1', 'nt'),
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'STILB' => array('10000', 'sb'),
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'STANDARD' => 'CANDELA_PER_SQUARE_METER'
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);
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}
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