Struct SceneLuminance 

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

Scene (world) luminance: a non-negative scalar in arbitrary linear units.

“Scene” here means pre-tone-mapping luminance, before the simple Reinhard curve Ld = L / (1 + L) has been applied. The struct does not enforce a specific unit (cd/m², linear-light normalized, …) — that’s the caller’s contract. It does enforce non-negativity and finiteness.

Implementations

impl SceneLuminance

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

Construct a scene luminance. Returns None for negative, NaN, or infinite inputs — none of those are valid linear-light luminance.

pub fn get(self) -> f64

Inner scalar.

pub fn to_display(self) -> DisplayLuminance

Apply the Reinhard 2002 simple global tone-reproduction curve:

Ld = L / (1 + L)

The result is always in the half-open range [0, 1) for any finite non-negative L, so the conversion is total.

Source: docs/image/filter/tone-mapping-operators.md §2.2 (the simple form, no white point, no key scaling).

Trait Implementations

impl Clone for SceneLuminance

fn clone(&self) -> SceneLuminance

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SceneLuminance

impl Debug for SceneLuminance

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

Formats the value using the given formatter.

impl PartialEq for SceneLuminance

fn eq(&self, other: &SceneLuminance) -> 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 SceneLuminance