Struct SdfGrid 

pub struct SdfGrid {
    pub dimensions: [usize; 3],
    pub spacing: f64,
    pub origin: [f64; 3],
    pub data: Vec<f32>,
}

A regular 3-D grid that stores SDF values as f32.

Voxel (i, j, k) is centred at origin + spacing * [i + 0.5, j + 0.5, k + 0.5].

Fields

dimensions: [usize; 3]

Number of voxels along [x, y, z].

spacing: f64

Uniform spacing between voxel centres.

origin: [f64; 3]

World-space position of the grid’s lower-left-front corner.

data: Vec<f32>

Flattened SDF values in x-major order (z slowest).

data[i + dims[0\] * (j + dims[1] * k)] corresponds to voxel (i,j,k).

Implementations

impl SdfGrid

pub fn new(dimensions: [usize; 3], spacing: f64, origin: [f64; 3]) -> Self

Allocate a new grid, filling every voxel with f32::MAX.

pub fn voxel_center(&self, i: usize, j: usize, k: usize) -> [f64; 3]

Return the world-space centre of voxel (i, j, k).

pub fn index(&self, i: usize, j: usize, k: usize) -> usize

Flat linear index for voxel (i, j, k).

pub fn compute_from_sdf(&mut self, sdf: &dyn Fn([f64; 3]) -> f64)

Fill every voxel by evaluating sdf at its centre.

The closure receives a [f64; 3] world-space point and should return the signed distance to the surface.

pub fn len(&self) -> usize

Total number of voxels in the grid.

pub fn is_empty(&self) -> bool

Return true when the grid contains no voxels.

Trait Implementations

impl Clone for SdfGrid

fn clone(&self) -> SdfGrid

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SdfGrid

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

Formats the value using the given formatter.