Struct EdgeId 

pub struct EdgeId(/* private fields */);

一条无向边，代表一对互为 twin 的半边。

EdgeId 包装了 twin 对中 slotmap key 较小的那个半边（“规范半边”）， 确保每条无向边有唯一的标识。对于无边界的边界半边（twin == None）， 直接使用该半边自身作为规范代表。

EdgeId 不是 slotmap 的 Key，不能直接用于 MeshStorage 的 CRUD 方法；使用 halfedge() 取出内部的 HalfEdgeId 后再操作。

Implementations

impl EdgeId

pub fn halfedge(self) -> HalfEdgeId

返回该无向边的规范半边句柄。

pub fn vertices(&self, mesh: &MeshStorage) -> Option<(VertexId, VertexId)>

返回该边的两个端点 (src, dst)，其中 src 是规范半边的源顶点， dst 为规范半边的目标顶点。

要求规范半边必须有 twin（即该边不是边界边），否则返回 None。 边界边的 twin 为 None，无法确定 src。

Trait Implementations

impl Clone for EdgeId

fn clone(&self) -> EdgeId

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for EdgeId

impl Debug for EdgeId

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

Formats the value using the given formatter.

impl Eq for EdgeId

impl Hash for EdgeId

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for EdgeId

fn cmp(&self, other: &EdgeId) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for EdgeId

fn eq(&self, other: &EdgeId) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for EdgeId

fn partial_cmp(&self, other: &EdgeId) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for EdgeId