class Chroma::Converters::HslConverter

Class to convert a color mode to {ColorModes::Hsl}.

Public Instance Methods

convert_hsl() click to toggle source

Returns @input because it's the same color mode. @return [ColorModes::Hsl]

# File lib/chroma/converters/hsl_converter.rb, line 43
def convert_hsl
  @input
end
convert_hsv() click to toggle source

Convert hsv to hsl. @return [ColorModes::Hsl]

# File lib/chroma/converters/hsl_converter.rb, line 49
def convert_hsv
  HsvConverter.convert_rgb(RgbConverter.convert_hsl(@input))
end
convert_rgb() click to toggle source

Convert rgb to hsl. @return [ColorModes::Hsl]

# File lib/chroma/converters/hsl_converter.rb, line 7
def convert_rgb
  r = bound01(@input.r, 255)
  g = bound01(@input.g, 255)
  b = bound01(@input.b, 255)

  rgb_array = [r, g, b]

  max = rgb_array.max
  min = rgb_array.min
  l = (max + min) * 0.5

  if max == min
    h = s = 0
  else
    d = (max - min).to_f

    s = if l > 0.5
          d / (2 - max - min)
        else
          d / (max + min)
        end

    h = case max
        when r then (g - b) / d + (g < b ? 6 : 0)
        when g then (b - r) / d + 2
        when b then (r - g) / d + 4
        end

    h /= 6.0
  end

  ColorModes::Hsl.new(h * 360, s, l, @input.a)
end