Struct HashGrid 

pub struct HashGrid {
    pub config: HashGridConfig,
    pub data: Vec<f32>,
    /* private fields */
}

Multi-resolution hash grid with trilinear interpolation.

Fields

config: HashGridConfig

Grid configuration.

data: Vec<f32>

Flat feature storage: [n_levels * T * F].

Implementations

impl HashGrid

pub fn new(cfg: HashGridConfig, rng: &mut LcgRng) -> NerfResult<Self>

Create a new hash grid with parameters initialized to U(-0.0001, 0.0001).

Errors

Returns InvalidHashConfig for invalid configuration.

pub fn output_dim(&self) -> usize

Total output dimension: n_levels * n_features_per_level.

pub fn query(&self, xyz: [f32; 3]) -> NerfResult<Vec<f32>>

Query a single 3D point in [0, 1]^3.

Returns a feature vector of length output_dim.

Errors

Returns DimensionMismatch for wrong input size.

pub fn query_batch(&self, xyz_batch: &[f32], n: usize) -> NerfResult<Vec<f32>>

Batch query: xyz_batch is a flat [N * 3] array.

Returns [N * output_dim].

Errors

Returns DimensionMismatch if xyz_batch.len() != n * 3.

Trait Implementations

impl Clone for HashGrid

fn clone(&self) -> HashGrid

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for HashGrid

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

Formats the value using the given formatter.