Struct OffsetMesh 

pub struct OffsetMesh {
    pub vertices: Vec<[f64; 3]>,
    pub normals: Vec<[f64; 3]>,
    pub faces: Vec<[usize; 3]>,
}

A triangle mesh with per-vertex normals, supporting inward/outward offsetting.

Fields

vertices: Vec<[f64; 3]>

Vertex positions.

normals: Vec<[f64; 3]>

Per-vertex normals (unit vectors).

faces: Vec<[usize; 3]>

Triangle faces as vertex index triples.

Implementations

impl OffsetMesh

pub fn from_triangle_soup(verts: &[[f64; 3]], faces: &[[usize; 3]]) -> Self

Build an OffsetMesh from a triangle soup, computing averaged vertex normals.

pub fn compute_vertex_normals( verts: &[[f64; 3]], faces: &[[usize; 3]], ) -> Vec<[f64; 3]>

Compute per-vertex normals by area-weighted average of incident face normals.

pub fn offset(&self, d: f64) -> OffsetMesh

Offset every vertex by d along its averaged normal.

Positive d expands outward; negative d shrinks inward.

impl OffsetMesh

pub fn collision_offset_shell(&self, d: f64) -> OffsetMesh

Compute the “collision offset” shell mesh.

Generates a new mesh where each face is moved outward by d along its face normal (not vertex normal). Unlike vertex-normal offsetting, this produces a shell mesh useful for broad CCD convex hull testing.

pub fn normals_are_unit(&self) -> bool

Validate that all vertex normals are unit length.

pub fn surface_area(&self) -> f64

Surface area of the mesh (sum of triangle areas).

pub fn centroid(&self) -> [f64; 3]

Centroid of the mesh (average vertex position).