|
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) 2005-2010 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 20096 2010-01-06 02:05:09Z bkarwin $ |
|
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) 2005-2010 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 } |