Struct rs_pbrt::core::lightdistrib::SpatialLightDistribution

pub struct SpatialLightDistribution {
    pub scene: Scene,
    pub n_voxels: [i32; 3],
    pub hash_table_size: usize,
    /* private fields */
}

A spatially-varying light distribution that adjusts the probability of sampling a light source based on an estimate of its contribution to a region of space. A fixed voxel grid is imposed over the scene bounds and a sampling distribution is computed as needed for each voxel.

Fields

scene: Scene

n_voxels: [i32; 3]

hash_table_size: usize

Implementations

impl SpatialLightDistribution

pub fn new(scene: &Scene, max_voxels: u32) -> Self

pub fn compute_distribution(&self, pi: &Point3i) -> Distribution1D

Compute the sampling distribution for the voxel with integer coordiantes given by “pi”.

pub fn lookup(&self, p: &Point3f) -> Arc<Distribution1D>

Given a point |p| in space, this method returns a (hopefully effective) sampling distribution for light sources at that point.