Struct Separation

pub struct Separation<'a> { /* private fields */ }

Writer for a separation dictionary. PDF 1.2+.

First, one of the alternate_... methods must be called to specify the alternate color space. Then, one of the tint_... methods must be called to specify the tint transform method. If the tint transform method is called before the alternate color space, the function panics. If multiple alternate color space functions are called, the function panics.

This struct is created by ColorSpace::separation.

Implementations

impl<'a> Separation<'a>

pub fn alternate_device(&mut self, device_space: DeviceColorSpace) -> &mut Self

Write the alternateSpace element as a device color space.

pub fn alternate_color_space(&mut self) -> ColorSpace<'_>

Start writing the alternateSpace element as a color space array. The color space must not be another Pattern, Separation, or DeviceN color space.

pub fn alternate_color_space_ref(&mut self, id: Ref) -> &mut Self

Write the alternateSpace element as an indirect reference. The color space must not be another Pattern, Separation, or DeviceN color space.

pub fn tint_exponential(&mut self) -> ExponentialFunction<'_>

Start writing the tintTransform element as an exponential interpolation function.

pub fn tint_stitching(&mut self) -> StitchingFunction<'_>

Start writing the tintTransform element as a stitching function.

pub fn tint_ref(&mut self, id: Ref) -> &mut Self

Write the tintTransform element as an indirect reference to a function. The function must take a single number as input and produce a color in the alternate color space as output. This must be used if a stream function like SampledFunction or PostScriptFunction is used.