Struct IesProfile 

pub struct IesProfile {
    pub name: String,
    pub vertical_angles: Vec<f32>,
    pub horizontal_angles: Vec<f32>,
    pub candela: Vec<Vec<f32>>,
    pub max_candela: f32,
}

A light intensity profile loaded from an IES (Illuminating Engineering Society) file.

Stores a 2D lookup table of candela values by vertical/horizontal angle.

Fields

name: String

vertical_angles: Vec<f32>

Vertical angles in degrees [0°, 180°].

horizontal_angles: Vec<f32>

Horizontal angles in degrees [0°, 360°].

candela: Vec<Vec<f32>>

Candela data: [horizontal][vertical] indexing.

max_candela: f32

Maximum candela value for normalization.

Implementations

impl IesProfile

pub fn uniform(name: impl Into<String>) -> Self

Create a fake IES profile (uniform sphere — equivalent to a point light).

pub fn downlight(name: impl Into<String>) -> Self

Create a downward-biased profile (like a recessed ceiling fixture).

pub fn sample(&self, v_angle: f32, h_angle: f32) -> f32

Sample the profile at the given vertical and horizontal angles (degrees).

pub fn evaluate_direction(&self, light_dir: Vec3, fixture_down: Vec3) -> f32

Evaluate the profile factor for a light direction relative to the fixture. light_dir is the direction FROM the light TO the surface.

Trait Implementations

impl Clone for IesProfile

fn clone(&self) -> IesProfile

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for IesProfile

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

Formats the value using the given formatter.