Struct Color 

pub struct Color {
    pub r: f64,
    pub g: f64,
    pub b: f64,
    pub a: f64,
}

An RGBA color with channels stored as floats in the 0.0..=1.0 range.

Fields

r: f64

g: f64

b: f64

a: f64

Implementations

impl Color

pub fn new(r: f64, g: f64, b: f64, a: f64) -> Color

pub fn from_rgba8(r: f64, g: f64, b: f64, a: f64) -> Color

From 8-bit RGB channels plus a 0.0..=1.0 alpha.

pub fn to_rgba_unit(self) -> [f64; 4]

The premultiplied-alpha [r, g, b, a] representation used when a color value is serialized as a spec-fixture output. MapLibre stores colors premultiplied internally, so ["interpolate", ...] results and other color outputs compare against [r*a, g*a, b*a, a].

pub fn to_rgba255(self) -> [f64; 4]

The to-rgba operator representation: straight (non-premultiplied) [r, g, b, a] with r/g/b in 0..=255 and alpha in 0.0..=1.0.

pub fn to_lab(self) -> [f64; 4]

Convert to CIE L*a*b* as [l, a, b, alpha] (from straight rgb).

pub fn from_lab(lab: [f64; 4]) -> Color

Build a color from CIE L*a*b* [l, a, b, alpha].

pub fn to_hcl(self) -> [f64; 4]

Convert to HCL as [h, c, l, alpha]; hue is NaN for achromatic colors.

pub fn from_hcl(hcl: [f64; 4]) -> Color

Build a color from HCL [h, c, l, alpha].

pub fn parse(input: &str) -> Option<Color>

Parse a CSS color string. Supports #rgb/#rrggbb/#rrggbbaa, rgb()/rgba(), hsl()/hsla(), and a table of named colors.

Trait Implementations

impl Clone for Color

fn clone(&self) -> Color

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Color

impl Debug for Color

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

Formats the value using the given formatter.

impl Display for Color

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

Formats the value using the given formatter.

impl PartialEq for Color

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