Struct VolumeMeshData 

#[non_exhaustive]
pub struct VolumeMeshData {
    pub positions: Vec<[f32; 3]>,
    pub cells: Vec<[u32; 8]>,
    pub cell_scalars: HashMap<String, Vec<f32>>,
    pub cell_colors: HashMap<String, Vec<[f32; 4]>>,
}

Input data for an unstructured volume mesh (tets, hexes, or mixed).

Each cell is represented as exactly 8 vertex indices. For tetrahedral cells, fill the last four indices with TET_SENTINEL (u32::MAX).

use viewport_lib::{VolumeMeshData, TET_SENTINEL};

// Two tets sharing vertices 0-1-2
let data = VolumeMeshData {
    positions: vec![
        [0.0, 0.0, 0.0],
        [1.0, 0.0, 0.0],
        [0.5, 1.0, 0.0],
        [0.5, 0.5, 1.0],
        [0.5, 0.5, -1.0],
    ],
    cells: vec![
        [0, 1, 2, 3, TET_SENTINEL, TET_SENTINEL, TET_SENTINEL, TET_SENTINEL],
        [0, 2, 1, 4, TET_SENTINEL, TET_SENTINEL, TET_SENTINEL, TET_SENTINEL],
    ],
    ..Default::default()
};

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

positions: Vec<[f32; 3]>

Vertex positions in local space.

cells: Vec<[u32; 8]>

Cell connectivity : exactly 8 indices per cell.

Tets: first 4 indices are the tet vertices; indices [4..8] must be TET_SENTINEL. Hexes: all 8 indices are valid.

cell_scalars: HashMap<String, Vec<f32>>

Named per-cell scalar attributes (one f32 per cell).

Automatically remapped to boundary face scalars during upload so they can be visualised via AttributeKind::Face.

cell_colors: HashMap<String, Vec<[f32; 4]>>

Named per-cell RGBA color attributes (one [f32; 4] per cell).

Automatically remapped to boundary face colors during upload, rendered via AttributeKind::FaceColor.

Trait Implementations

impl Default for VolumeMeshData

fn default() -> VolumeMeshData

Returns the “default value” for a type.