Trait Premultiply

pub trait Premultiply: Sized {
    type Scalar: Real + Stimulus;

    // Required methods
    fn premultiply(self, alpha: Self::Scalar) -> PreAlpha<Self>;
    fn unpremultiply(premultiplied: PreAlpha<Self>) -> (Self, Self::Scalar);
}

Alpha masking and unmasking.

Required Associated Types

type Scalar: Real + Stimulus

The color’s component type.

Required Methods

fn premultiply(self, alpha: Self::Scalar) -> PreAlpha<Self>

Alpha mask the color.

This is done by multiplying the color’s component by alpha.

fn unpremultiply(premultiplied: PreAlpha<Self>) -> (Self, Self::Scalar)

Alpha unmask the color, resulting in a color and transparency pair.

This is done by dividing the masked color’s component by alpha, or returning a black color if alpha is 0.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl<S, T> Premultiply for Luma<S, T>

where T: Real + Stimulus + Zero + IsValidDivisor + Mul<Output = T> + Div<Output = T> + Clone, <T as HasBoolMask>::Mask: LazySelect<T> + Clone,

type Scalar = T

impl<S, T> Premultiply for Rgb<S, T>

where T: Real + Stimulus + Zero + IsValidDivisor + Mul<Output = T> + Div<Output = T> + Clone, <T as HasBoolMask>::Mask: LazySelect<T> + Clone,

type Scalar = T

impl<T> Premultiply for Cam16UcsJab<T>

where T: Stimulus + Zero + IsValidDivisor + Mul<Output = T> + Div<Output = T> + Real + Clone, <T as HasBoolMask>::Mask: LazySelect<T> + Clone,

type Scalar = T

impl<T> Premultiply for Oklab<T>

where T: Stimulus + Zero + IsValidDivisor + Mul<Output = T> + Div<Output = T> + Real + Clone, <T as HasBoolMask>::Mask: LazySelect<T> + Clone,

type Scalar = T

impl<Wp, T> Premultiply for Lab<Wp, T>

where T: Real + Stimulus + Zero + IsValidDivisor + Mul<Output = T> + Div<Output = T> + Clone, <T as HasBoolMask>::Mask: LazySelect<T> + Clone,

type Scalar = T

impl<Wp, T> Premultiply for Luv<Wp, T>

where T: Real + Stimulus + Zero + IsValidDivisor + Mul<Output = T> + Div<Output = T> + Clone, <T as HasBoolMask>::Mask: LazySelect<T> + Clone,

type Scalar = T

impl<Wp, T> Premultiply for Xyz<Wp, T>

where T: Real + Stimulus + Zero + IsValidDivisor + Mul<Output = T> + Div<Output = T> + Clone, <T as HasBoolMask>::Mask: LazySelect<T> + Clone,

type Scalar = T

impl<Wp, T> Premultiply for Yxy<Wp, T>

where T: Real + Stimulus + Zero + IsValidDivisor + Mul<Output = T> + Div<Output = T> + Clone, <T as HasBoolMask>::Mask: LazySelect<T> + Clone,

type Scalar = T