Struct IESProfile 

pub struct IESProfile {
    pub vertical_angles: Vec<f32>,
    pub horizontal_angles: Vec<f32>,
    pub candela_values: Vec<f32>,
    pub max_candela: f32,
    pub position: Vec3,
    pub direction: Vec3,
    pub color: Color,
    pub intensity: f32,
    pub radius: f32,
    pub enabled: bool,
}

Photometric intensity distribution sampled from IES data. Uses bilinear interpolation on a 2D (vertical angle, horizontal angle) grid.

Fields

vertical_angles: Vec<f32>

Vertical angles in radians (typically 0 to PI).

horizontal_angles: Vec<f32>

Horizontal angles in radians (typically 0 to 2*PI).

candela_values: Vec<f32>

Candela values: indexed as [h_index * vertical_count + v_index].

max_candela: f32

Maximum candela value for normalization.

position: Vec3

Light properties

direction: Vec3

color: Color

intensity: f32

radius: f32

enabled: bool

Implementations

impl IESProfile

pub fn new( vertical_angles: Vec<f32>, horizontal_angles: Vec<f32>, candela_values: Vec<f32>, position: Vec3, direction: Vec3, ) -> Self

Create an IES profile from raw data.

pub fn symmetric( vertical_angles: Vec<f32>, candela_values: Vec<f32>, position: Vec3, direction: Vec3, ) -> Self

Create a symmetric IES profile from vertical-only data.

pub fn vertical_count(&self) -> usize

Get the number of vertical angle samples.

pub fn horizontal_count(&self) -> usize

Get the number of horizontal angle samples.

pub fn sample(&self, vertical_angle: f32, horizontal_angle: f32) -> f32

Sample the candela value at the given vertical and horizontal angles using bilinear interpolation.

pub fn intensity_for_direction(&self, world_dir: Vec3) -> f32

Compute the normalized intensity factor for a world-space direction.

pub fn irradiance_at(&self, point: Vec3) -> Color

Compute irradiance at a world position.

pub fn downlight(position: Vec3) -> Self

Create a standard downlight IES profile.

pub fn wall_wash(position: Vec3, wall_direction: Vec3) -> Self

Create a wall-wash IES profile.

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.

impl Default for IESProfile

fn default() -> Self

Returns the “default value” for a type.