Struct Color

pub struct Color;

Available on crate feature color only.

🌐 Color namespaced constants and methods.

Implementations

impl Color

pub const fn luminances_rgb_f32() -> [f32; 3]

Returns the coefficients used for calculating the R,G,B luminances.

pub const fn luminances_rgb_f64() -> [f64; 3]

Returns the coefficients used for calculating the R,G,B luminances.

impl Color

pub fn gamma_apply_f32(c: f32, gamma: f32) -> f32

Available on crate features std or _float_f32 only.

Applies the gamma (γ) to a linear f32 channel to make it non-linear.

Algorithm

$$\begin{align} \notag f_\text{apply}(c) = \begin{cases} 12.92c, & \text{if } c <= 0.0031308 \cr 1.055c^{1/\gamma} - 0.055, & \text{if } c > 0.0031308 \end{cases} \cr \end{align}$$

pub fn gamma_remove_f32(c: f32, gamma: f32) -> f32

Available on crate features std or _float_f32 only.

Removes the gamma (γ) from a non-linear f32 channel to make it linear.

Algorithm

$$\begin{align} \notag f_\text{remove}(c) = \begin{cases} c / 12.92, & \normalsize\text{if } c <= 0.04045 \cr \left(\Large\frac{c+0.055}{1.055} - \normalsize 0.055\right)^{\gamma}, & \normalsize \text{if } c > 0.04045 \end{cases} \cr \end{align}$$

impl Color

pub fn gamma_apply_f64(c: f64, gamma: f64) -> f64

Available on crate features std or _float_f64 only.

Applies the gamma (γ) to a linear f64 channel to make it non-linear.

Algorithm

$$\begin{align} \notag f_\text{apply}(c) = \begin{cases} 12.92c, & \text{if } c <= 0.0031308 \cr 1.055c^{1/\gamma} - 0.055, & \text{if } c > 0.0031308 \end{cases} \cr \end{align}$$

pub fn gamma_remove_f64(c: f64, gamma: f64) -> f64

Available on crate features std or _float_f64 only.

Removes the gamma (γ) from a non-linear f64 channel to make it linear.

Algorithm

$$\begin{align} \notag f_\text{remove}(c) = \begin{cases} c / 12.92, & \normalsize\text{if } c <= 0.04045 \cr \left(\Large\frac{c+0.055}{1.055} - \normalsize 0.055\right)^{\gamma}, & \normalsize \text{if } c > 0.04045 \end{cases} \cr \end{align}$$