Struct RasterizerCompoundAa 

pub struct RasterizerCompoundAa { /* private fields */ }

Compound anti-aliased rasterizer with per-edge style indices.

Port of C++ rasterizer_compound_aa. Each edge can have independent left and right fill styles, enabling multi-style rendering in a single pass.

Implementations

impl RasterizerCompoundAa

pub fn new() -> Self

pub fn reset(&mut self)

pub fn reset_clipping(&mut self)

pub fn clip_box(&mut self, x1: f64, y1: f64, x2: f64, y2: f64)

pub fn filling_rule(&mut self, rule: FillingRule)

pub fn layer_order(&mut self, order: LayerOrder)

pub fn styles(&mut self, left: i32, right: i32)

Set the left and right fill styles for subsequent edges.

pub fn move_to(&mut self, x: i32, y: i32)

Move to position (subpixel integer coords).

pub fn line_to(&mut self, x: i32, y: i32)

Line to position (subpixel integer coords).

pub fn move_to_d(&mut self, x: f64, y: f64)

Move to position (f64 coords).

pub fn line_to_d(&mut self, x: f64, y: f64)

Line to position (f64 coords).

pub fn add_vertex(&mut self, x: f64, y: f64, cmd: u32)

Process a vertex command.

pub fn edge(&mut self, x1: i32, y1: i32, x2: i32, y2: i32)

Add a single edge (subpixel integer coords).

pub fn edge_d(&mut self, x1: f64, y1: f64, x2: f64, y2: f64)

Add a single edge (f64 coords).

pub fn add_path<VS: VertexSource>(&mut self, vs: &mut VS, path_id: u32)

Add an entire path from a vertex source.

pub fn min_x(&self) -> i32

pub fn min_y(&self) -> i32

pub fn max_x(&self) -> i32

pub fn max_y(&self) -> i32

pub fn min_style(&self) -> i32

pub fn max_style(&self) -> i32

pub fn sort(&mut self)

Sort cells.

pub fn rewind_scanlines(&mut self) -> bool

Prepare for scanline iteration.

pub fn calculate_alpha(&self, area: i32) -> u32

Calculate alpha from coverage area.

pub fn sweep_styles(&mut self) -> u32

Process the current scanline and return the number of active styles.

Call style(idx) to get the actual style ID for each index 0..n-1.

pub fn style(&self, style_idx: u32) -> u32

Get the actual style ID for the given style index (0-based).

pub fn scanline_start(&self) -> i32

Get the X start of the current scanline.

pub fn scanline_length(&self) -> u32

Get the length of the current scanline.

pub fn sweep_scanline<SL: Scanline>(&self, sl: &mut SL, style_idx: i32) -> bool

Sweep one scanline for one style.

style_idx is -1 for the “no fill” style, or 0..n-1 for actual styles.

pub fn navigate_scanline(&mut self, y: i32) -> bool

Navigate to a specific scanline.

pub fn allocate_cover_buffer(&mut self, len: u32) -> &mut [u8]

Allocate a cover buffer of the given length. Returns a mutable slice.

Trait Implementations

impl Default for RasterizerCompoundAa

fn default() -> Self

Returns the “default value” for a type.