Struct Gray8 

pub struct Gray8 {
    pub v: u8,
    pub a: u8,
}

Grayscale color with u8 components (value + alpha). Port of C++ gray8T<linear>.

Fields

v: u8

a: u8

Implementations

impl Gray8

pub const BASE_SHIFT: u32 = 8

pub const BASE_SCALE: u32

pub const BASE_MASK: u32

pub const BASE_MSB: u32

pub fn new(v: u32, a: u32) -> Self

pub fn new_opaque(v: u32) -> Self

pub fn luminance_from_rgba(c: &Rgba) -> u8

Calculate luminance from linear RGB (ITU-R BT.709).

pub fn luminance_from_rgba8(c: &Rgba8) -> u8

Calculate luminance from Rgba8 (ITU-R BT.709 with integer coefficients).

pub fn from_rgba(c: &Rgba) -> Self

pub fn from_rgba8(c: &Rgba8) -> Self

pub fn is_transparent(&self) -> bool

pub fn is_opaque(&self) -> bool

pub fn multiply(a: u8, b: u8) -> u8

pub fn lerp(p: u8, q: u8, a: u8) -> u8

pub fn mult_cover(a: u8, b: CoverType) -> u8

pub fn clear(&mut self) -> &mut Self

pub fn premultiply(&mut self) -> &mut Self

pub fn demultiply(&mut self) -> &mut Self

pub fn gradient(&self, c: &Gray8, k: f64) -> Gray8

pub fn no_color() -> Self

Trait Implementations

impl Clone for Gray8

fn clone(&self) -> Gray8

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Gray8

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

Formats the value using the given formatter.

impl Default for Gray8

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for Gray8

fn eq(&self, other: &Gray8) -> 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 Gray8

impl Eq for Gray8

impl StructuralPartialEq for Gray8