Enum Transfer 

pub enum Transfer {
    Linear,
    Srgb,
    A98Rgb,
    ProphotoRgb,
    Rec2020,
}

The transfer function (a.k.a. “gamma”) pairing a linear light value with its encoded form.

Every variant is defined for the whole real line by mirroring the curve about zero, as CSS Color 4 requires for out-of-gamut channels.

Variants

Linear

Srgb

A98Rgb

ProphotoRgb

Rec2020

The ITU-R BT.2020 OETF, which is what browser engines currently render rec2020 with. CSS Color 4 now specifies the BT.1886 EOTF, a plain 2.4 gamma, instead (https://github.com/w3c/csswg-drafts/issues/12574); the rec2020-bt1886 feature switches to that.

Implementations

impl Transfer

pub fn encode(self, linear: f64) -> f64

Encodes a linear light value, e.g. linear sRGB 0.2140 -> sRGB 0.5.

pub fn decode(self, encoded: f64) -> f64

Decodes an encoded value back to linear light, e.g. sRGB 0.5 -> linear sRGB 0.2140.

pub fn encode_all(self, linear: [f64; 3]) -> [f64; 3]

Encodes three linear light channels, e.g. the red, green and blue of an RGB space.

pub fn decode_all(self, encoded: [f64; 3]) -> [f64; 3]

Decodes three encoded channels back to linear light.

Trait Implementations

impl Clone for Transfer

fn clone(&self) -> Transfer

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for Transfer

impl Debug for Transfer

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for Transfer

impl PartialEq for Transfer

fn eq(&self, other: &Transfer) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for Transfer