Enum picto::color::Color

pub enum Color<T = f32> where
    T: Float,  {
    Luma(Luma<T>),
    Rgb(Rgb<T>),
    Xyz(Xyz<T>),
    Yxy(Yxy<T>),
    Lab(Lab<T>),
    Lch(Lch<T>),
    Hsv(Hsv<T>),
    Hsl(Hsl<T>),
    Hwb(Hwb<T>),
}

A generic color type.

The Color may belong to any color space and it may change depending on which operation is performed. That makes it immune to the “without conversion” rule of the operations it supports. The color spaces are selected as follows:

• Mix: RGB for no particular reason, except that it’s intuitive.
• Shade: CIE Lab* for its luminance component.
• Hue and GetHue: CIE LCh° for its hue component and how it preserves the apparent lightness.
• Saturate: CIE LCh° for its chromaticity component and how it preserves the apparent lightness.

It’s not recommended to use Color when full control is necessary, but it can easily be converted to a fixed color space in those cases.

Variants

Luma(Luma<T>)

Tuple Fields

0: Luma<T>

Linear luminance.

Rgb(Rgb<T>)

Tuple Fields

0: Rgb<T>

Linear RGB.

Xyz(Xyz<T>)

Tuple Fields

0: Xyz<T>

CIE 1931 XYZ.

Yxy(Yxy<T>)

Tuple Fields

0: Yxy<T>

CIE 1931 Yxy.

Lab(Lab<T>)

Tuple Fields

0: Lab<T>

CIE Lab* (CIELAB).

Lch(Lch<T>)

Tuple Fields

0: Lch<T>

CIE LCh°, a polar version of CIE Lab*.

Hsv(Hsv<T>)

Tuple Fields

0: Hsv<T>

Linear HSV, a cylindrical version of RGB.

Hsl(Hsl<T>)

Tuple Fields

0: Hsl<T>

Linear HSL, a cylindrical version of RGB.

Hwb(Hwb<T>)

Tuple Fields

0: Hwb<T>

Linear HWB, an intuitive cylindrical version of RGB.

Implementations

impl<T> Color<T> where
    T: Float, 

pub fn y(luma: T) -> Color<T>

Linear luminance.

pub fn y_u8(luma: u8) -> Color<T>

Linear luminance from an 8 bit value.

pub fn rgb(red: T, green: T, blue: T) -> Color<T>

Linear RGB.

pub fn rgb_u8(red: u8, green: u8, blue: u8) -> Color<T>

Linear RGB from 8 bit values.

pub fn xyz(x: T, y: T, z: T) -> Color<T>

CIE XYZ.

pub fn yxy(x: T, y: T, luma: T) -> Color<T>

CIE Yxy.

pub fn lab(l: T, a: T, b: T) -> Color<T>

CIE Lab*.

pub fn lch(l: T, chroma: T, hue: LabHue<T>) -> Color<T>

CIE LCh°.

pub fn hsv(hue: RgbHue<T>, saturation: T, value: T) -> Color<T>

Linear HSV.

pub fn hsl(hue: RgbHue<T>, saturation: T, lightness: T) -> Color<T>

Linear HSL.

pub fn hwb(hue: RgbHue<T>, whiteness: T, balckness: T) -> Color<T>

Linear HWB.

Trait Implementations

impl<T> ApproxEq for Color<T> where
    T: Float + ApproxEq,
    <T as ApproxEq>::Epsilon: Copy,
    <T as ApproxEq>::Epsilon: Float, 

type Epsilon = <T as ApproxEq>::Epsilon

Used for specifying relative comparisons.

pub fn default_epsilon() -> <Color<T> as ApproxEq>::Epsilon

The default tolerance to use when testing values that are close together.

pub fn default_max_relative() -> <Color<T> as ApproxEq>::Epsilon

The default relative tolerance for testing values that are far-apart.

pub fn default_max_ulps() -> u32

The default ULPs to tolerate when testing values that are far-apart.

pub fn relative_eq(
    &self,
    other: &Color<T>,
    epsilon: <Color<T> as ApproxEq>::Epsilon,
    max_relative: <Color<T> as ApproxEq>::Epsilon
) -> bool

A test for equality that uses a relative comparison if the values are far apart.

pub fn ulps_eq(
    &self,
    other: &Color<T>,
    epsilon: <Color<T> as ApproxEq>::Epsilon,
    max_ulps: u32
) -> bool

A test for equality that uses units in the last place (ULP) if the values are far apart.

fn relative_ne(
    &self,
    other: &Self,
    epsilon: Self::Epsilon,
    max_relative: Self::Epsilon
) -> bool

The inverse of ApproxEq::relative_eq.

fn ulps_ne(&self, other: &Self, epsilon: Self::Epsilon, max_ulps: u32) -> bool

The inverse of ApproxEq::ulps_eq.

impl<T> Blend for Color<T> where
    T: Float, 

type Color = Rgb<T>

The core color type. Typically Self for color types without alpha.

pub fn into_premultiplied(self) -> PreAlpha<Rgb<T>, T>

Convert the color to premultiplied alpha.

pub fn from_premultiplied(color: PreAlpha<Rgb<T>, T>) -> Color<T>

Convert the color from premultiplied alpha.

fn blend<F>(self, destination: Self, blend_function: F) -> Self where
    F: BlendFunction<Self::Color>, 

Blend self, as the source color, with destination, using blend_function. Anything that implements BlendFunction is acceptable, including functions and closures.

fn over(self, other: Self) -> Self

Place self over other. This is the good old common alpha composition equation.

fn inside(self, other: Self) -> Self

Results in the parts of self that overlaps the visible parts of other.

fn outside(self, other: Self) -> Self

Results in the parts of self that lies outside the visible parts of other.

fn atop(self, other: Self) -> Self

Place self over only the visible parts of other.

fn xor(self, other: Self) -> Self

Results in either self or other, where they do not overlap.

fn plus(self, other: Self) -> Self

Add self and other. This uses the alpha component to regulate the effect, so it’s not just plain component wise addition.

fn multiply(self, other: Self) -> Self

Multiply self with other. This uses the alpha component to regulate the effect, so it’s not just plain component wise multiplication.

fn screen(self, other: Self) -> Self

Make a color which is at least as light as self or other.

fn overlay(self, other: Self) -> Self

Multiply self or other if other is dark, or screen them if other is light. This results in an S curve.

fn darken(self, other: Self) -> Self

Return the darkest parts of self and other.

fn lighten(self, other: Self) -> Self

Return the lightest parts of self and other.

fn dodge(self, other: Self) -> Self

Lighten other to reflect self. Results in other if self is black.

fn burn(self, other: Self) -> Self

Darken other to reflect self. Results in other if self is white.

fn hard_light(self, other: Self) -> Self

Multiply self or other if other is dark, or screen them if self is light. This is similar to overlay, but depends on self instead of other.

fn soft_light(self, other: Self) -> Self

Lighten other if self is light, or darken other as if it’s burned if self is dark. The effect is increased if the components of self is further from 0.5.

fn difference(self, other: Self) -> Self

Return the absolute difference between self and other. It’s basically abs(self - other), but regulated by the alpha component.

fn exclusion(self, other: Self) -> Self

Similar to difference, but appears to result in a lower contrast. other is inverted if self is white, and preserved if self is black.

impl<T> Clone for Color<T> where
    T: Clone + Float, 

pub fn clone(&self) -> Color<T>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T> Debug for Color<T> where
    T: Debug + Float, 

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

Formats the value using the given formatter.

impl<T> From<Alpha<Hsl<T>, T>> for Color<T> where
    T: Float, 

pub fn from(color: Alpha<Hsl<T>, T>) -> Color<T>

Performs the conversion.

impl<T> From<Alpha<Hsv<T>, T>> for Color<T> where
    T: Float, 

pub fn from(color: Alpha<Hsv<T>, T>) -> Color<T>

Performs the conversion.

impl<T> From<Alpha<Hwb<T>, T>> for Color<T> where
    T: Float, 

pub fn from(color: Alpha<Hwb<T>, T>) -> Color<T>

Performs the conversion.

impl<T> From<Alpha<Lab<T>, T>> for Color<T> where
    T: Float, 

pub fn from(color: Alpha<Lab<T>, T>) -> Color<T>

Performs the conversion.

impl<T> From<Alpha<Lch<T>, T>> for Color<T> where
    T: Float, 

pub fn from(color: Alpha<Lch<T>, T>) -> Color<T>

Performs the conversion.

impl<T> From<Alpha<Luma<T>, T>> for Color<T> where
    T: Float, 

pub fn from(color: Alpha<Luma<T>, T>) -> Color<T>

Performs the conversion.

impl<T> From<Alpha<Rgb<T>, T>> for Color<T> where
    T: Float, 

pub fn from(color: Alpha<Rgb<T>, T>) -> Color<T>

Performs the conversion.

impl<T> From<Alpha<Xyz<T>, T>> for Color<T> where
    T: Float, 

pub fn from(color: Alpha<Xyz<T>, T>) -> Color<T>

Performs the conversion.

impl<T> From<Alpha<Yxy<T>, T>> for Color<T> where
    T: Float, 

pub fn from(color: Alpha<Yxy<T>, T>) -> Color<T>

Performs the conversion.

impl<T> From<Color<T>> for Hsv<T> where
    T: Float, 

pub fn from(color: Color<T>) -> Hsv<T>

Performs the conversion.

impl<T> From<Color<T>> for Alpha<Hsl<T>, T> where
    T: Float, 

pub fn from(color: Color<T>) -> Alpha<Hsl<T>, T>

Performs the conversion.

impl<T> From<Color<T>> for Alpha<Lch<T>, T> where
    T: Float, 

pub fn from(color: Color<T>) -> Alpha<Lch<T>, T>

Performs the conversion.

impl<T> From<Color<T>> for Alpha<Hsv<T>, T> where
    T: Float, 

pub fn from(color: Color<T>) -> Alpha<Hsv<T>, T>

Performs the conversion.

impl<T> From<Color<T>> for Hsl<T> where
    T: Float, 

pub fn from(color: Color<T>) -> Hsl<T>

Performs the conversion.

impl<T> From<Color<T>> for Lch<T> where
    T: Float, 

pub fn from(color: Color<T>) -> Lch<T>

Performs the conversion.

impl<T> From<Color<T>> for Alpha<Luma<T>, T> where
    T: Float, 

pub fn from(color: Color<T>) -> Alpha<Luma<T>, T>

Performs the conversion.

impl<T> From<Color<T>> for Hwb<T> where
    T: Float, 

pub fn from(color: Color<T>) -> Hwb<T>

Performs the conversion.

impl<T> From<Color<T>> for Srgb<T> where
    T: Float, 

pub fn from(color: Color<T>) -> Srgb<T>

Performs the conversion.

impl<T> From<Color<T>> for Rgb<T> where
    T: Float, 

pub fn from(color: Color<T>) -> Rgb<T>

Performs the conversion.

impl<T> From<Color<T>> for Alpha<Xyz<T>, T> where
    T: Float, 

pub fn from(color: Color<T>) -> Alpha<Xyz<T>, T>

Performs the conversion.

impl<T> From<Color<T>> for Alpha<Yxy<T>, T> where
    T: Float, 

pub fn from(color: Color<T>) -> Alpha<Yxy<T>, T>

Performs the conversion.

impl<T> From<Color<T>> for Luma<T> where
    T: Float, 

pub fn from(color: Color<T>) -> Luma<T>

Performs the conversion.

impl<T> From<Color<T>> for Alpha<Lab<T>, T> where
    T: Float, 

pub fn from(color: Color<T>) -> Alpha<Lab<T>, T>

Performs the conversion.

impl<T> From<Color<T>> for Xyz<T> where
    T: Float, 

pub fn from(color: Color<T>) -> Xyz<T>

Performs the conversion.

impl<T> From<Color<T>> for Alpha<Hwb<T>, T> where
    T: Float, 

pub fn from(color: Color<T>) -> Alpha<Hwb<T>, T>

Performs the conversion.

impl<T> From<Color<T>> for Alpha<Rgb<T>, T> where
    T: Float, 

pub fn from(color: Color<T>) -> Alpha<Rgb<T>, T>

Performs the conversion.

impl<T> From<Color<T>> for Yxy<T> where
    T: Float, 

pub fn from(color: Color<T>) -> Yxy<T>

Performs the conversion.

impl<T> From<Color<T>> for Lab<T> where
    T: Float, 

pub fn from(color: Color<T>) -> Lab<T>

Performs the conversion.

impl<T> From<GammaRgb<T>> for Color<T> where
    T: Float, 

pub fn from(color: GammaRgb<T>) -> Color<T>

Performs the conversion.

impl<T> From<Hsl<T>> for Color<T> where
    T: Float, 

pub fn from(color: Hsl<T>) -> Color<T>

Performs the conversion.

impl<T> From<Hsv<T>> for Color<T> where
    T: Float, 

pub fn from(color: Hsv<T>) -> Color<T>

Performs the conversion.

impl<T> From<Hwb<T>> for Color<T> where
    T: Float, 

pub fn from(color: Hwb<T>) -> Color<T>

Performs the conversion.

impl<T> From<Lab<T>> for Color<T> where
    T: Float, 

pub fn from(color: Lab<T>) -> Color<T>

Performs the conversion.

impl<T> From<Lch<T>> for Color<T> where
    T: Float, 

pub fn from(color: Lch<T>) -> Color<T>

Performs the conversion.

impl<T> From<Luma<T>> for Color<T> where
    T: Float, 

pub fn from(color: Luma<T>) -> Color<T>

Performs the conversion.

impl<T> From<Rgb<T>> for Color<T> where
    T: Float, 

pub fn from(color: Rgb<T>) -> Color<T>

Performs the conversion.

impl<T> From<Srgb<T>> for Color<T> where
    T: Float, 

pub fn from(color: Srgb<T>) -> Color<T>

Performs the conversion.

impl<T> From<Xyz<T>> for Color<T> where
    T: Float, 

pub fn from(color: Xyz<T>) -> Color<T>

Performs the conversion.

impl<T> From<Yxy<T>> for Color<T> where
    T: Float, 

pub fn from(color: Yxy<T>) -> Color<T>

Performs the conversion.

impl<T> GetHue for Color<T> where
    T: Float, 

type Hue = LabHue<T>

The kind of hue unit this color space uses.

pub fn get_hue(&self) -> Option<LabHue<T>>

Calculate a hue if possible.

impl<T> Hue for Color<T> where
    T: Float, 

pub fn with_hue(&self, hue: LabHue<T>) -> Color<T>

Return a new copy of self, but with a specific hue.

pub fn shift_hue(&self, amount: LabHue<T>) -> Color<T>

Return a new copy of self, but with the hue shifted by amount.

impl<T> Mix for Color<T> where
    T: Float, 

type Scalar = T

The type of the mixing factor.

pub fn mix(&self, other: &Color<T>, factor: T) -> Color<T>

Mix the color with an other color, by factor.

impl<T> Saturate for Color<T> where
    T: Float, 

type Scalar = T

The type of the (de)saturation factor.

pub fn saturate(&self, factor: T) -> Color<T>

Increase the saturation by factor.

fn desaturate(&self, factor: Self::Scalar) -> Self

Decrease the saturation by factor.

impl<T> Shade for Color<T> where
    T: Float, 

type Scalar = T

The type of the lighten/darken amount.

pub fn lighten(&self, amount: T) -> Color<T>

Lighten the color by amount.

fn darken(&self, amount: Self::Scalar) -> Self

Darken the color by amount.

impl<T> Copy for Color<T> where
    T: Copy + Float,