Struct LightSourceGoniometric 

pub struct LightSourceGoniometric<'m, 's> { /* private fields */ }

Borrowed projection of IfcLightSourceGoniometric: a real luminaire described by photometric data rather than a renderer’s approximation.

This is the only light source carrying absolute photometric quantities (luminous flux, colour temperature, lamp technology). Every other subtype is a normalized shading construct. The values are reported exactly as authored; this crate performs no photometric or colour-space conversion.

Implementations

impl<'m, 's> LightSourceGoniometric<'m, 's>

pub fn light_source(&self) -> LightSource<'m, 's>

The inherited IfcLightSource colour and intensity attributes.

pub fn position(&self) -> StyleResult<EntityId>

The Position attribute: a mandatory IfcAxis2Placement3D reference.

A full placement, not a bare point: a luminaire’s intensity distribution is defined in its own local axes, so the orientation is what makes IfcLightIntensityDistribution angles meaningful.

pub fn colour_appearance(&self) -> StyleResult<Option<EntityId>>

The ColourAppearance attribute, when authored: an IfcColourRgb reference giving the perceived colour.

Distinct from the inherited LightColour, which is the shading colour. A lamp can have one chromaticity and be rendered with another.

pub fn colour_temperature(&self) -> StyleResult<f64>

The ColourTemperature attribute, an IfcThermodynamicTemperatureMeasure.

Mandatory. Reported in the file’s own temperature unit; IFC’s SI default is kelvin, but the value is not converted here.

pub fn luminous_flux(&self) -> StyleResult<f64>

The LuminousFlux attribute, an IfcLuminousFluxMeasure (lumen under the SI default). Mandatory.

pub fn light_emission_source(&self) -> StyleResult<&'m str>

The LightEmissionSource attribute: the lamp technology token from IfcLightEmissionSourceEnum.

Returned as the raw schema token rather than a Rust enum. The enumeration is schema-versioned, and this crate’s census marks such tokens SchemaValue – promoting one to a closed Rust type would make a future schema’s new member unrepresentable.

pub fn light_distribution_data_source(&self) -> StyleResult<EntityId>

The LightDistributionDataSource attribute: a mandatory reference to either an IfcLightIntensityDistribution (inline photometric data) or an IfcExternalReference (e.g. an EULUMDAT or IES file).

The select is validated, so a reference to an unrelated entity is a typed crate::StyleError::ReferenceType rather than a surprise at the point of use.

Trait Implementations

impl<'m, 's> Clone for LightSourceGoniometric<'m, 's>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'m, 's> Copy for LightSourceGoniometric<'m, 's>

impl<'m, 's> Debug for LightSourceGoniometric<'m, 's>

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

Formats the value using the given formatter.