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December 19, 2015 17:19
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quickly calculate the brightness of an rgba color in javascript (not accurate but fast)
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| /*global define*/ | |
| define( | |
| function() | |
| { | |
| function brightness( color ) | |
| { | |
| // (R+R+B+G+G+G)/6 | |
| return ( color[0] + color[0] + color[1] + color[2] + color[2] + color[2] ) / 6; | |
| } | |
| return brightness; | |
| } | |
| ); |
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