Struct ViewingConditions 

pub struct ViewingConditions {
    pub n: f64,
    pub aw: f64,
    pub nbb: f64,
    pub ncb: f64,
    pub c: f64,
    pub nc: f64,
    pub rgb_d: [f64; 3],
    pub fl: f64,
    pub fl_root: f64,
    pub z: f64,
}

The environment a color is seen in, with the CAM16 intermediates that depend only on it. Field names are CAM16’s own terms.

Fields

n: f64

Background induction factor.

aw: f64

Achromatic response of the white point.

nbb: f64

Brightness induction factor.

ncb: f64

Chromatic induction factor.

c: f64

Impact of surround.

nc: f64

Chromatic induction from surround.

rgb_d: [f64; 3]

Per-channel degree of adaptation.

fl: f64

Luminance-level adaptation factor.

fl_root: f64

Fourth root of Self::fl.

z: f64

Base exponential nonlinearity.

Implementations

impl ViewingConditions

pub fn standard() -> &'static Self

sRGB-like viewing conditions: the ones HCT is defined in.

pub fn make( white_point: [f64; 3], adapting_luminance: f64, background_lstar: f64, surround: f64, discounting_illuminant: bool, ) -> Self

Conditions from physical parameters: the white point in XYZ, the adapting luminance, the L* of the surrounding area, the surround (0 dark, 1 dim, 2 average) and whether the eye discounts the illuminant.

Trait Implementations

impl Clone for ViewingConditions

fn clone(&self) -> ViewingConditions

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ViewingConditions

impl Debug for ViewingConditions

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

Formats the value using the given formatter.

impl PartialEq for ViewingConditions

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ViewingConditions