Struct IrradianceCache 

pub struct IrradianceCache {
    pub entries: Vec<IrradianceCacheEntry>,
    pub capacity: usize,
}

A cache of irradiance samples for global-illumination interpolation.

New samples are inserted and queries interpolate nearby entries using distance and normal similarity as weights.

Fields

entries: Vec<IrradianceCacheEntry>

capacity: usize

Maximum number of entries (oldest are evicted when at capacity).

Implementations

impl IrradianceCache

pub fn new(capacity: usize) -> Self

pub fn query(&self, pos: Vec3, normal: Vec3, max_dist: f32) -> Option<Vec3>

Query the cache for irradiance at (pos, normal).

Interpolates from all entries within max_dist. Returns None if there are no valid entries nearby.

pub fn insert( &mut self, pos: Vec3, normal: Vec3, irradiance: Vec3, validity: f32, )

Insert a new irradiance sample.

If the cache is at capacity the entry with the lowest validity is evicted.

pub fn update_validity(&mut self, pos: Vec3, decay_rate: f32)

Reduce validity of all entries within radius of pos by decay_rate.

pub fn prune(&mut self, threshold: f32)

Remove all entries with validity below threshold.

pub fn len(&self) -> usize

Number of entries currently in the cache.

pub fn is_empty(&self) -> bool

pub fn clear(&mut self)

Clear all entries.