Struct GradientLut 

pub struct GradientLut { /* private fields */ }

Gradient color lookup table.

Builds a 256-entry (or custom size) color LUT from SVG-style color stops. Supports arbitrary numbers of stops at positions [0..1].

Port of C++ gradient_lut<ColorInterpolator, ColorLutSize>.

Implementations

impl GradientLut

pub fn new(lut_size: usize) -> Self

Create a new gradient LUT with the specified size (default 256).

pub fn new_default() -> Self

Create a new gradient LUT with default size of 256.

pub fn set_use_fast_interpolator(&mut self, fast: bool)

Set whether to use the fast DDA interpolator (default: true).

pub fn remove_all(&mut self)

Remove all color stops.

pub fn add_color(&mut self, offset: f64, color: Rgba8)

Add a color stop at the given offset (clamped to [0..1]).

pub fn build_lut(&mut self)

Build the lookup table by interpolating between color stops.

Must have at least 2 color stops. Stops are sorted by offset and duplicates are removed.

Trait Implementations

impl ColorFunction for GradientLut

type Color = Rgba8

fn size(&self) -> usize

fn get(&self, index: usize) -> Rgba8