Trait image::imageops::colorops::ColorMap[−][src]

pub trait ColorMap {
    type Color;
    fn index_of(&self, color: &Self::Color) -> usize;

    fn map_color(&self, color: &mut Self::Color);

    fn lookup(&self, index: usize) -> Option<Self::Color> { ... }

    fn has_lookup(&self) -> bool { ... }
}
[−]

A color map

Associated Types

type Color[src][−]

The color type on which the map operates on

Required methods

fn index_of(&self, color: &Self::Color) -> usize[src][−]

Returns the index of the closest match of color in the color map.

fn map_color(&self, color: &mut Self::Color)[src][−]

Maps color to the closest color in the color map.

Provided methods

fn lookup(&self, index: usize) -> Option<Self::Color>[src][−]

Looks up color by index in the color map. If idx is out of range for the color map, or ColorMap doesn’t implement lookup None is returned.

fn has_lookup(&self) -> bool[src][−]

Determine if this implementation of ColorMap overrides the default lookup.

Implementations on Foreign Types

impl ColorMap for NeuQuant[src][−]

type Color = Rgba<u8>

fn has_lookup(&self) -> bool[src][−]

Indicate NeuQuant implements lookup.

Implementors

impl ColorMap for BiLevel[src][+]

type Color = Luma<u8>

fn has_lookup(&self) -> bool[src][−]

Indicate NeuQuant implements lookup.

impl ColorMap for image::math::nq::NeuQuant[src][+]

type Color = Rgba<u8>

fn has_lookup(&self) -> bool[src][−]

Indicate NeuQuant implements lookup.