Module: Imatcher::ColorMethods

Includes:: ChunkyPNG::Color

Included in:: Image, Modes::Base

Defined in:: lib/imatcher/color_methods.rb

Overview

:nodoc:

Instance Method Summary collapse

#brightness(a) ⇒ Object

Instance Method Details

#brightness(a) ⇒ `Object`



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# File 'lib/imatcher/color_methods.rb', line 11

def brightness(a)
  0.3 * r(a) + 0.59 * g(a) + 0.11 * b(a)
end