Struct CellAa 

pub struct CellAa {
    pub x: i32,
    pub y: i32,
    pub cover: i32,
    pub area: i32,
}

A pixel cell storing accumulated coverage and area from edges.

Port of C++ cell_aa from agg_rasterizer_scanline_aa_nogamma.h.

• cover: net winding contribution (sum of dy across this cell)
• area: twice the signed area of edge fragments within this cell, used to compute the partial-pixel coverage at cell boundaries

Fields

x: i32

y: i32

cover: i32

area: i32

Implementations

impl CellAa

pub fn initial(&mut self)

Reset to the “initial” sentinel state (matches C++ cell_aa::initial).

pub fn style(&mut self, _other: &CellAa)

Style comparison (no-op for basic cell_aa — only meaningful for compound rasterizer cells). Matches C++ cell_aa::style.

pub fn not_equal(&self, ex: i32, ey: i32, _style: &CellAa) -> bool

Returns non-zero if this cell differs from position (ex, ey). Matches C++ cell_aa::not_equal — uses unsigned subtraction trick.

Trait Implementations

impl Clone for CellAa

fn clone(&self) -> CellAa

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CellAa

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

Formats the value using the given formatter.

impl Default for CellAa

fn default() -> Self

Returns the “default value” for a type.

impl Copy for CellAa