Struct LightUnit 

pub struct LightUnit {
    pub candela_per_unit: f32,
}

What one unit of the source’s own value of a point or spot light is in candela: the calibration the lowering that made the world’s point and spot core.lights chose (a directional light’s intensity, in lux, is not in it). Such a light’s intensity is its source value times candela_per_unit, so colour * intensity / candela_per_unit is the value the source stored, the one a program of the source reads its lights in (crate::shader::LightValue::Colour). The lowering that makes the lights writes it; a world whose lights no lowering made (a scene read in candela) has none, and a light table’s colours have no value there.

Fields

candela_per_unit: f32

Candela per unit of the source’s light value; finite and above 0.

Trait Implementations

impl Clone for LightUnit

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for LightUnit

impl Debug for LightUnit

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

Formats the value using the given formatter.

impl PartialEq for LightUnit

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

Equality operator ==.

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

Inequality operator !=.

impl Resource for LightUnit

fn verify(&self, _w: &World) -> Result<(), String>

A finite factor above 0: a light of the source’s value 1 has some intensity.

const NAME: &'static str = "core.light_unit"

fn to_json(&self) -> Result<Option<Value>, JsonError>

As Component::to_json.

const VERSION: u32 = 1

fn references(&self, _out: &mut Vec<Entity>)

The entities this resource refers to, appended to out. A resource holding entity references must declare every one of them and implement Resource::retain_references.

fn retain_references(&mut self, _keep: &dyn Fn(Entity) -> bool)

Forget every reference to an entity keep refuses (set it to “none”). The world calls it whenever entities leave it (World::despawn, World::retain, World::move_components) and on the copy a World::subset or World::split_off part gets, so a resource never refers to an entity its world lacks.

impl Serialize for LightUnit

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for LightUnit