class Sass::Value::Color::Space::ProphotoRgb

def bounded?
  true
end

def from_linear(channel)
  abs = channel.abs
  abs >= 1 / 512.0 ? (channel <=> 0) * (abs**(1 / 1.8)) : 16 * channel
end

def initialize
  super('prophoto-rgb', Utils::RGB_CHANNELS)
end

def to_linear(channel)
  abs = channel.abs
  abs <= 16 / 512.0 ? channel / 16.0 : (channel <=> 0) * (abs**1.8)
end

def transformation_matrix(dest)
  case dest
  when A98_RGB
    Conversions::LINEAR_PROPHOTO_RGB_TO_LINEAR_A98_RGB
  when DISPLAY_P3
    Conversions::LINEAR_PROPHOTO_RGB_TO_LINEAR_DISPLAY_P3
  when LMS
    Conversions::LINEAR_PROPHOTO_RGB_TO_LMS
  when REC2020
    Conversions::LINEAR_PROPHOTO_RGB_TO_LINEAR_REC2020
  when RGB, SRGB, SRGB_LINEAR
    Conversions::LINEAR_PROPHOTO_RGB_TO_LINEAR_SRGB
  when XYZ_D50
    Conversions::LINEAR_PROPHOTO_RGB_TO_XYZ_D50
  when XYZ_D65
    Conversions::LINEAR_PROPHOTO_RGB_TO_XYZ_D65
  else
    super
  end
end