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PatternFilter

agg_rust::pattern_filters_rgba

Trait PatternFilter 

Source 
pub trait PatternFilter {
    // Required methods
    fn dilation() -> u32;
    fn pixel_low_res(buf: &[Vec<Rgba8>], x: i32, y: i32) -> Rgba8;
    fn pixel_high_res(buf: &[Vec<Rgba8>], p: &mut Rgba8, x: i32, y: i32);
}
Expand description

Trait for pattern pixel access.

The buffer is a 2D grid stored as &[Vec<Rgba8>] where each inner Vec is one row of pixels. This maps to the C++ row_ptr_cache pattern.

Required Methods§

Source

fn dilation() -> u32

Number of extra pixels needed on each side of the pattern.

Source

fn pixel_low_res(buf: &[Vec<Rgba8>], x: i32, y: i32) -> Rgba8

Get pixel at integer coordinates.

Source

fn pixel_high_res(buf: &[Vec<Rgba8>], p: &mut Rgba8, x: i32, y: i32)

Get pixel at subpixel coordinates (shifted by LINE_SUBPIXEL_SHIFT). Writes the result into p.

Dyn Compatibility§

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors§