Struct Shell 

pub struct Shell { /* private fields */ }

A topological shell: a connected set of faces.

A closed shell bounds a volume (solid). An open shell represents a sheet or partial boundary.

Implementations

impl Shell

pub fn new(faces: Vec<FaceId>) -> Result<Self, TopologyError>

Creates a new shell from a non-empty list of faces.

Errors

Returns TopologyError::Empty if faces is empty.

pub const fn empty() -> Self

Creates a faceless shell backing an empty-result sentinel.

A regular shell rejects an empty face list because an ordinary surface boundary must enclose something. The empty shell exists only so a boolean whose algebraic outcome is the empty set (e.g. the intersection of disjoint solids) can be represented as a valid, queryable solid handle reporting zero faces and zero volume — distinct from a malformed-input error.

pub fn is_empty(&self) -> bool

Returns true when this shell has no faces (the empty-result sentinel — see Shell::empty).

pub fn faces(&self) -> &[FaceId]

Returns the faces of this shell.

pub fn faces_mut(&mut self) -> &mut [FaceId]

Returns mutable access to the faces of this shell.

Allows in-place mutation (reorder, replace) but not removal. The shell must always contain at least one face.

Trait Implementations

impl Clone for Shell

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Shell

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

Formats the value using the given formatter.