public struct FilterColor: Filtering, Equatable, Codable

public init()

let rangeSaturation: ParameterRange<Double, FilterContrast>

let rangeBrightness: ParameterRange<Double, FilterContrast>

let rangeContrast: ParameterRange<Double, FilterContrast>

var valueSaturation: Double = 1

var valueBrightness: Double = 0

var valueContrast: Double = 1

public func apply(to image: CIImage, sourceImage: CIImage) -> CIImage