Struct Topology 

pub struct Topology {
    pub directed: HashMap<(usize, usize), (usize, usize)>,
    pub fans: Vec<(Vec<(usize, usize)>, bool)>,
}

How the faces of a mesh fit together: which face runs along each directed edge, and the faces around each vertex in order.

Fields

directed: HashMap<(usize, usize), (usize, usize)>

(a, b): the face that runs from a to b, and the corner of it at a.

fans: Vec<(Vec<(usize, usize)>, bool)>

Per vertex: the faces around it, each with its corner there, in order — each next one across the edge to the previous one’s preceding corner — and whether they close up all round, rather than meeting the mesh’s boundary on both ends.

Implementations

impl Topology

pub fn new( vertex_count: usize, faces: &[Vec<usize>], vertex_names: &[String], face_names: &[String], ) -> GeopResult<Self>

The topology of faces over vertex_count vertices. Fails, naming the elements with vertex_names and face_names, for a mesh no limit surface can be built from: a face of fewer than three vertices, or through one twice; faces turned against each other (an edge run the same way twice), or more than two meeting at an edge; faces around a vertex that do not make one fan; a vertex of no face; an inner vertex of fewer than three faces.

pub fn is_boundary(&self, a: usize, b: usize) -> bool

Whether only one face runs along the edge between a and b.

pub fn edges(&self) -> BTreeMap<[usize; 2], Vec<usize>>

Every edge, the smaller index first, with its faces.

Trait Implementations

impl Clone for Topology

fn clone(&self) -> Topology

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Topology

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

Formats the value using the given formatter.