Method: ColorFun::HSL.from_rbg

Defined in:
lib/color_fun/hsl.rb

.from_rbg(r, g, b) ⇒ Object

Create a new HSL object based on the RGB values



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# File 'lib/color_fun/hsl.rb', line 40

def self.from_rbg(r,g,b)
  colors    = [r / 255.0, g / 255.0, b / 255.0]
  max       = colors.max
  min       = colors.min
  d         = max - min
  v         = max * 100

  s = max != 0.0 ? d / max *100 : 0.0

  if s == 0.0
    h = 0.0
  else
    case max
    when colors[0]
      h = (colors[1] - colors[2]) / d
    when colors[1]
      h = 2 + (colors[2] - colors[0]) / d
    when colors[2]
      h = 4 + (colors[0] - colors[1]) / d
    end
    h *= 60.0
    h += 360.0 if (h < 0)
  end
  self.new(h, s, v)
end