Method: PSD::Color.ahsb_to_color

Defined in:
lib/psd/color.rb

.ahsb_to_color(alpha, hue, saturation, brightness) ⇒ Object 



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# File 'lib/psd/color.rb', line 50

def self.ahsb_to_color(alpha, hue, saturation, brightness)
  if saturation == 0.0
    b = g = r = (255 * brightness).to_i
  else
    if brightness <= 0.5
      m2 = brightness * (1 + saturation)
    else
      m2 = brightness + saturation - brightness * saturation
    end

    m1 = 2 * brightness - m2
    r = hue_to_color(hue + 120, m1, m2)
    g = hue_to_color(hue, m1, m2)
    b = hue_to_color(hue - 120, m1, m2)
  end

  argb_to_color alpha, r, g, b
end