References

AbstractCMYK{T} <: Color{T, 4}

Abstract supertype for opaque CMYK color types.

TransparentCMYK{C <: AbstractCMYK, T} = TransparentColor{C, T, 5}

An alias for the abstract supertype for transparent CMYK color types.

AbstractACMYK{C <: AbstractCMYK, T} = AlphaColor{C, T, 5}

An alias for the abstract supertype for CMYK color types with alpha stored first.

AbstractCMYKA{C <: AbstractCMYK, T} = ColorAlpha{C, T, 5}

An alias for the abstract supertype for CMYK color types with alpha stored last.

CMYK{T <: Fractional} <: AbstractCMYK{T}

CMYK is a general type for representing process color (i.e. cyan, magenta, yellow and black). For each component value, 0 means 0% ink density and 1 means 100% ink density.

ACMYK{T <: Fractional} <: AbstractACMYK{CMYK{T}, T}

ACMYK is a transparent color variant of CMYK. ACMYK stores the alpha component first, but its constructors always take the alpha component last, i.e. in order of (cyan, magenta, yellow, black, alpha).

CMYKA{T <: Fractional} <: AbstractCMYKA{CMYK{T}, T}

CMYKA is a transparent color variant of CMYK. ACMYK stores the alpha component last. See also ACMYK.

cyan(c)

Returns the cyan component of an AbstractCMYK or TransparentCMYK color.

magenta(c)

Returns the magenta component of an AbstractCMYK or TransparentCMYK color.

yellow(c)

Returns the yellow component of an AbstractCMYK or TransparentCMYK color.

black(c)

Returns the black component of an AbstractCMYK or TransparentCMYK color.

CMYKColorTypes.complement(c)

Return the color with the color components of the complement (i.e. 1 - compN(c)). If c is a TransparentCMYK, the alpha component is left untouched.

This function has the same functionality as ColorVectorSpace.complement. Therefore, if you are using ColorVectorSpace, you do not need to specify the module name explicitly. Also, to avoid name collisions, do not (re-)export this function.

Examples

julia> CMYKColorTypes.complement(CMYKA(0.0, 0.2, 0.5, 0.75, 0.7)) # keeping the alpha
CMYKA{Float64}(1.0, 0.8, 0.5, 0.25, 0.7)

total_ink_coverage(c::AbstractCMYK)

Returns the total ink coverage (TIC), or the total amount of cyan, magenta, yellow, and black inks in percentage. Although not exact, this value is often used as a substitute for the total area coverage (TAC). This function cannot be used for TransparentCMYK colors, because the physical meaning is unclear.

Examples

julia> total_ink_coverage(CMYK{Float32}(1.0, 0.3, 0.2, 0.0))
150.0f0

naively_convert(::Type{<:Color}, c::Colorant)
naively_convert(::Type{<:TransparentColor}, c::Colorant[, alpha])

Convert color types using the "naive" algorithm for RGB <–> CMYK conversions defined in CSS Color Module Level 4 (Working Draft).