Method: ChunkyPNG::Color#fade

Defined in:
lib/chunky_png/color.rb

#fade(color, factor) ⇒ Integer

Lowers the intensity of a color, by lowering its alpha by a given factor.

Parameters:

  • color (Integer) —

    The color to adjust.

  • factor (Integer) —

    Fade factor as an integer between 0 and 255.

Returns:

  • (Integer) —

    The faded color.



333
334
335
336
 
# File 'lib/chunky_png/color.rb', line 333

def fade(color, factor)
  new_alpha = int8_mult(a(color), factor)
  (color & 0xffffff00) | new_alpha
end