Created
December 8, 2009 02:09
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Circulates the given number between the min-, max-boundaries (boundaries included)
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/* | |
Script: Number.circulate.js | |
Extension for Mootools Number Native | |
License: | |
MIT-style license. | |
Copyright: | |
Copyright (c) 2009-2010 [Thomas Dullnig](http://thomasdullnig.blogspot.com/). | |
Code: | |
[Thomas Dullnig](http://thomasdullnig.blogspot.com/). | |
Description: | |
Circulates the given number between the min-, max-boundaries (boundaries included) | |
Examples may help: | |
(11).circulate(5, 10) == 5 | |
(12).circulate(5, 10) == 6 | |
(13).circulate(5, 10) == 7 | |
(14).circulate(5, 10) == 8 | |
(15).circulate(5, 10) == 9 | |
(16).circulate(5, 10) == 10 | |
(17).circulate(5, 10) == 5 | |
(18).circulate(5, 10) == 6 | |
and so on... | |
Same goes for numbers smaller than the min-value: | |
(4).circulate(5, 10) == 10 | |
(3).circulate(5, 10) == 9 | |
(2).circulate(5, 10) == 8 | |
and so on... | |
Even with negative values: | |
(-2).circulate(0, 2) == 1 | |
or | |
(3).circulate(-4, -2) == -3 | |
*/ | |
Number.implement({ | |
'circulate': function(min, max) { | |
if (!(this > max || this < min)) {return this;} | |
var gap = max - min + 1; | |
return (this > max ? min - 1 + (((this - max) % gap) || gap) : max + 1 - (((min - this) % gap) || gap)); | |
} | |
}); |
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