Struct GainMapChannel 

pub struct GainMapChannel {
    pub min: f64,
    pub max: f64,
    pub gamma: f64,
    pub base_offset: f64,
    pub alternate_offset: f64,
}

Per-channel gain map parameters.

Gains (min, max) are in log2 domain. Gamma and offsets are in linear domain.

Fields

min: f64

Log2 of minimum gain (can be negative, e.g., −1.0 = half brightness).

max: f64

Log2 of maximum gain (typically ≥ min).

gamma: f64

Gamma applied to gain map values. Linear domain, must be > 0.

base_offset: f64

Offset added to base image values before gain application. Linear domain.

alternate_offset: f64

Offset added to alternate image values before gain application. Linear domain.

Implementations

impl GainMapChannel

pub fn linear_min(&self) -> f64

Minimum gain in linear domain: 2^min.

pub fn linear_max(&self) -> f64

Maximum gain in linear domain: 2^max.

Trait Implementations

impl Clone for GainMapChannel

fn clone(&self) -> GainMapChannel

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for GainMapChannel

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

Formats the value using the given formatter.

impl Default for GainMapChannel

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for GainMapChannel

fn eq(&self, other: &GainMapChannel) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for GainMapChannel

impl StructuralPartialEq for GainMapChannel