Struct DisplayLuminance 

pub struct DisplayLuminance(/* private fields */);

Display luminance after tone-mapping: a scalar in [0, 1).

This is the output domain of SceneLuminance::to_display. The closed half-open range comes from the asymptote of L/(1+L) at L → ∞: 1 is approached but never reached, so any displayable pixel value lives strictly below 1. The closed-form inverse below relies on that.

Implementations

impl DisplayLuminance

pub fn new(ld: f64) -> Option<Self>

Construct a display luminance. Returns None for inputs outside [0, 1), NaN, or non-finite values. 1.0 is rejected because it is unreachable by the forward curve (and the inverse blows up).

pub fn get(self) -> f64

Inner scalar.

pub fn to_scene(self) -> SceneLuminance

Inverse of SceneLuminance::to_display:

L = Ld / (1 − Ld)

Derived by solving Ld = L/(1+L) for L. Total on the half-open construction range [0, 1). The result is non-negative and finite (it grows without bound as Ld → 1, but the constructor refuses Ld == 1.0, so we never hit infinity here).

Trait Implementations

impl Clone for DisplayLuminance

fn clone(&self) -> DisplayLuminance

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for DisplayLuminance

impl Debug for DisplayLuminance

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

Formats the value using the given formatter.

impl PartialEq for DisplayLuminance

fn eq(&self, other: &DisplayLuminance) -> 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 StructuralPartialEq for DisplayLuminance