Struct LightSourceSpot 

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

Borrowed projection of IfcLightSourceSpot: a positional light narrowed to a cone and aimed along an orientation.

Implementations

impl<'m, 's> LightSourceSpot<'m, 's>

pub fn positional(&self) -> LightSourcePositional<'m, 's>

The inherited IfcLightSourcePositional position and attenuation.

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

The inherited IfcLightSource colour and intensity attributes.

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

The Orientation attribute: a mandatory IfcDirection reference giving the cone’s axis.

pub fn concentration_exponent(&self) -> StyleResult<Option<f64>>

The ConcentrationExponent attribute, when authored.

OPTIONAL in all three bundled schemas. It is not defaulted to 1.0 here; an absent exponent means the file expressed no falloff preference, which is different from authoring linear falloff.

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

The SpreadAngle attribute, an IfcPositivePlaneAngleMeasure.

The half-angle of the full cone, in the file’s plane-angle unit – commonly radians, but IFC permits degrees via IfcUnitAssignment, so a caller must resolve units before comparing this to beam_width_angle from a different file.

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

The BeamWidthAngle attribute, an IfcPositivePlaneAngleMeasure: the half-angle of the inner, full-intensity cone.

Trait Implementations

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

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

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

Formats the value using the given formatter.