Struct pbrt::lights::infinite::InfiniteAreaLight

pub struct InfiniteAreaLight {
    pub lmap: Arc<MipMap<Spectrum>>,
    pub world_center: RwLock<Point3f>,
    pub world_radius: RwLock<Float>,
    pub distribution: Arc<Distribution2D>,
    pub flags: u8,
    pub n_samples: i32,
    pub medium_interface: MediumInterface,
    pub light_to_world: Transform,
    pub world_to_light: Transform,
}

Fields

lmap: Arc<MipMap<Spectrum>>

world_center: RwLock<Point3f>

world_radius: RwLock<Float>

distribution: Arc<Distribution2D>

flags: u8

n_samples: i32

medium_interface: MediumInterface

light_to_world: Transform

world_to_light: Transform

Methods

impl InfiniteAreaLight

pub fn new(     light_to_world: &Transform,     l: &Spectrum,     n_samples: i32,     texmap: String ) -> Self

pub fn new_hdr(     light_to_world: &Transform,     l: &Spectrum,     n_samples: i32,     texmap: String ) -> Self

Trait Implementations

impl Light for InfiniteAreaLight

fn sample_li(     &self,     iref: &InteractionCommon,     u: &Point2f,     wi: &mut Vector3f,     pdf: &mut Float,     vis: &mut VisibilityTester ) -> Spectrum

Returns the radiance arriving at a point at a certain time due to the light, assuming there are no occluding objects between them.

fn power(&self) -> Spectrum

Like directional lights, the total power from the infinite area light is related to the surface area of the scene. Like many other lights the power computed here is approximate.

fn preprocess(&self, scene: &Scene)

Like DistanceLights, InfiniteAreaLights also need the scene bounds; here again, the preprocess() method finds the scene bounds after all of the scene geometry has been created.

fn le(&self, ray: &mut Ray) -> Spectrum

Because infinte area lights need to be able to contribute radiance to rays that don't hit any geometry in the scene, we'll add a method to the base Light class that returns emitted radiance due to that light along a ray that escapes the scene bounds. It's the responsibility of the integrators to call this method for these rays.

fn pdf_li(&self, _iref: &dyn Interaction, w: Vector3f) -> Float

fn sample_le(     &self,     u1: &Point2f,     u2: &Point2f,     time: Float,     ray: &mut Ray,     n_light: &mut Normal3f,     pdf_pos: &mut Float,     pdf_dir: &mut Float ) -> Spectrum

fn pdf_le(     &self,     ray: &Ray,     _n_light: &Normal3f,     pdf_pos: &mut Float,     pdf_dir: &mut Float )

fn get_flags(&self) -> u8

fn get_n_samples(&self) -> i32