Struct LabColor 

pub struct LabColor {
    pub l: f64,
    pub a: f64,
    pub b: f64,
    pub color_space: LabColorSpace,
}

Color value in Lab color space

Fields

l: f64

L* component (lightness, 0 to 100)

a: f64

a* component (green-red axis)

b: f64

b* component (blue-yellow axis)

color_space: LabColorSpace

Associated color space

Implementations

impl LabColor

pub fn new(l: f64, a: f64, b: f64, color_space: LabColorSpace) -> Self

Create a new Lab color

pub fn with_default(l: f64, a: f64, b: f64) -> Self

Create Lab color with default D50 color space

pub fn color_space_array(&self) -> Vec<Object>

Get the color space array for PDF

pub fn values(&self) -> Vec<f64>

Get the color values as an array

pub fn to_xyz(&self) -> [f64; 3]

Convert to XYZ color space

pub fn to_rgb(&self) -> [f64; 3]

Convert to approximate RGB for display

pub fn delta_e(&self, other: &LabColor) -> f64

Calculate color difference from another Lab color

pub fn delta_e_2000(&self, other: &LabColor) -> f64

Calculate perceptual color difference (Delta E 2000)

impl LabColor

Common Lab colors

pub fn white() -> Self

Pure white (L*=100)

pub fn black() -> Self

Pure black (L*=0)

pub fn gray() -> Self

Middle gray (L*=50)

pub fn red() -> Self

Red

pub fn green() -> Self

Green

pub fn blue() -> Self

Blue

pub fn yellow() -> Self

Yellow

pub fn cyan() -> Self

Cyan

pub fn magenta() -> Self

Magenta

Trait Implementations

impl Clone for LabColor

fn clone(&self) -> LabColor

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LabColor

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

Formats the value using the given formatter.

impl PartialEq for LabColor

fn eq(&self, other: &LabColor) -> 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 LabColor