Function building_blocks_mesh::surface_nets::surface_nets

pub fn surface_nets<V, T>(
    sdf: &V, 
    extent: &Extent3i, 
    output: &mut SurfaceNetsBuffer
) where
    V: Array<[i32; 3]> + GetUncheckedRelease<Stride, T>,
    T: SignedDistance, 

The Naive Surface Nets smooth voxel meshing algorithm.

For an in-depth explanation of the algorithm, read here.

Extracts an isosurface mesh from the signed distance field sdf. The sdf describes a 3D lattice of values. These lattice points will be considered corners of unit cubes. For each unit cube, a single isosurface vertex will be estimated, as below, where "c" is a cube corner and "s" is an isosurface vertex.

c - c - c - c
| s | s | s |
c - c - c - c
| s | s | s |
c - c - c - c
| s | s | s |
c - c - c - c

The set of corners sampled is exactly the set of points in extent. sdf must contain all of those points.