Struct Rgb 

pub struct Rgb {
    pub r: f32,
    pub g: f32,
    pub b: f32,
}

A linear-light RGB color with f32 components. 一个使用 f32 分量的线性光 RGB 颜色。

Components are conventionally in [0, 1] but are not clamped by default; lighting math may produce values outside the range, and conversion to ColorRgba8 clamps them. 分量通常位于 [0, 1] 内，但默认不会截断；光照运算可能产生超出该范围的值，转换为 ColorRgba8 时会进行截断。

Fields

r: f32

Red component. 红色分量。

g: f32

Green component. 绿色分量。

b: f32

Blue component. 蓝色分量。

Implementations

impl Rgb

pub const BLACK: Self

Pure black. 纯黑。

pub const WHITE: Self

Pure white. 纯白。

pub const fn new(r: f32, g: f32, b: f32) -> Self

Construct a color from three components. 用三个分量构造一个颜色。

pub fn to_rgba8(self) -> ColorRgba8

Quantize to 8-bit RGBA, truncating toward zero. 量化到 8 位 RGBA，向零截断。

The as u8 cast saturates: values below 0 clamp to 0, values above 1 clamp to 255, and NaN clamps to 0. as u8 转换是饱和的：小于 0 的值截断为 0，大于 1 的值截断为 255，NaN 截断为 0。 Truncation rather than rounding is deliberate: it keeps the mapping from [0, 1] onto 0..=255 monotonic and idempotent, so quantizing an already quantized colour changes nothing. 采用截断而非四舍五入是刻意的：它使 [0, 1] 到 0..=255 的映射保持单调且幂等， 因此对已量化的颜色再次量化不会改变任何东西。

Trait Implementations

impl Add for Rgb

type Output = Rgb

The resulting type after applying the + operator.

fn add(self, rhs: Self) -> Self

Performs the + operation.

impl Clone for Rgb

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Rgb

impl Debug for Rgb

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

Formats the value using the given formatter.

impl Default for Rgb

fn default() -> Self

Returns the “default value” for a type.

impl Mul for Rgb

Component-wise multiplication. 逐分量相乘。

type Output = Rgb

The resulting type after applying the * operator.

fn mul(self, rhs: Self) -> Self

Performs the * operation.

impl Mul<f32> for Rgb

type Output = Rgb

The resulting type after applying the * operator.

fn mul(self, rhs: f32) -> Self

Performs the * operation.

impl PartialEq for Rgb

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Rgb

impl Sub for Rgb

type Output = Rgb

The resulting type after applying the - operator.

fn sub(self, rhs: Self) -> Self

Performs the - operation.