Struct TriMesh 

pub struct TriMesh {
    pub vertices: Vec<Vec3>,
    pub triangles: Vec<Triangle>,
}

A simple triangle mesh.

Fields

vertices: Vec<Vec3>

Vertices of the mesh.

triangles: Vec<Triangle>

Triangles defined by vertex indices.

Implementations

impl TriMesh

pub fn new(vertices: Vec<Vec3>, triangles: Vec<Triangle>) -> Self

Create a new triangle mesh.

pub fn face_normal(&self, tri_idx: usize) -> Vec3

Compute the face normal for triangle at tri_idx.

Returns cross(v1-v0, v2-v0).normalize().

pub fn signed_volume(&self) -> f64

Volume of a closed mesh using the divergence theorem (signed volume sum).

Assumes a watertight mesh with consistent winding. V = (1/6) * Σ (v0 · (v1 × v2))

pub fn surface_area(&self) -> f64

Surface area of the mesh.

Sum of triangle areas = 0.5 * |cross(e1, e2)|.

pub fn vertex_normals(&self) -> Vec<Vec3>

Compute vertex normals by averaging adjacent face normals.

pub fn contains_point(&self, point: Vec3) -> bool

Check if a point is inside the mesh using ray casting in the +Z direction.

Counts intersections; odd count means inside. Assumes watertight mesh.

pub fn uv_sphere(radius: f64, rings: u32, sectors: u32) -> Self

Generate a UV sphere mesh for testing purposes.

rings is the number of latitude rings (excluding poles), sectors is the number of longitude sectors.

pub fn bounding_box(&self) -> (Vec3, Vec3)

Compute the axis-aligned bounding box of the mesh.

Returns (min, max) corners. Panics if the mesh has no vertices.

Trait Implementations

impl Clone for TriMesh

fn clone(&self) -> TriMesh

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TriMesh

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

Formats the value using the given formatter.