Method: Rustle::Color#to_hsb

Defined in:
lib/rustle/color.rb

#to_hsb ⇒ Array<Fixnum>

Converts the Color object to an array of HSB values in the format [hue, saturation, brightness].

Returns:

  • (Array<Fixnum>) —

    the color as an HSB array



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# File 'lib/rustle/color.rb', line 159

def to_hsb
  r = @r / 255.0
  g = @g / 255.0
  b = @b / 255.0
  max = [r, g, b].max
  min = [r, g, b].min
  delta = max - min
  hue = 0.0
  brightness = max
  saturation = max == 0 ? 0 : (max - min) / max

  if delta != 0
    if r == max
      hue = (g - b) / delta
    else
      if g == max
        hue = 2 + (b - r) / delta
      else
        hue = 4 + (r - g) / delta
      end
    end

    hue *= 60
    hue += 360 if hue < 0
  end
  [hue, saturation, brightness]
end