Struct Chromaticity

pub struct Chromaticity {
    pub x: f32,
    pub y: f32,
}

CIE xy chromaticity, specifying a color in the XYZ color space, but not its luminosity.

An absolute color can be specified by adding a luminosity coordinate Y as in xyY. An XYZ color can be calculated from xyY as follows.

X = Y/y * x
Y = Y
Z = Y/y * (1 - x - y)

Fields

x: f32

The x-coordinate of the CIE xy chromaticity.

y: f32

The y-coordinate of the CIE xy chromaticity.

Implementations

impl Chromaticity

pub const D65: Self

The CIE D65 white point under the standard 2° observer.

This is a common white point for color spaces targeting monitors.

The white point’s chromaticities are truncated to four digits here, as specified by the CSS Color 4 specification, and following most color spaces using this white point.

pub const D50: Self

The CIE D50 white point under the standard 2° observer.

The white point’s chromaticities are truncated to four digits here, as specified by the CSS Color 4 specification, and following most color spaces using this white point.

pub const ACES: Self

The ACES white point.

This is the reference white of ACEScg and ACES2065-1. The white point is near the D60 white point under the standard 2° observer.

const SRGB_TO_BRADFORD: [[f32; 3]; 3]

XYZ_to_Bradford * lin_sRGB_to_XYZ

const BRADFORD_TO_SRGB: [[f32; 3]; 3]

XYZ_to_lin_sRGB * Bradford_to_XYZ

const XYZ_TO_BRADFORD: [[f32; 3]; 3]

pub(crate) const fn to_xyz(self) -> [f32; 3]

Convert the xy chromaticities to XYZ, assuming xyY with Y=1.

pub(crate) const fn linear_srgb_chromatic_adaptation_matrix( self, to: Self, ) -> [[f32; 3]; 3]

Calculate the 3x3 linear Bradford chromatic adaptation matrix from linear sRGB space.

This calculates the matrix going from a reference white of self to a reference white of to.

Trait Implementations

impl Clone for Chromaticity

fn clone(&self) -> Chromaticity

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Chromaticity

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

Formats the value using the given formatter.

impl PartialEq for Chromaticity

fn eq(&self, other: &Chromaticity) -> 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 Copy for Chromaticity

impl StructuralPartialEq for Chromaticity