Struct EdgeUse

pub struct EdgeUse<G> {
    pub edge: EdgeId,
    pub orientation: Orientation,
    pub pcurve: Option<G>,
}

One oriented use of an edge in a loop.

The pcurve is the edge’s image in the parameter space of the face this use belongs to. A 3D edge curve says where a boundary sits in model space; it does not say where that boundary lies in a surface’s (u, v) domain, and inverting a surface to recover it is not generally solvable in closed form. Trimming a curved face therefore needs it stated, which is what exchange formats carry alongside the 3D edge curve.

It belongs to the USE rather than the edge: one edge bounds two faces with different support surfaces, so it has a different parameter image in each.

Fields

edge: EdgeId

Referenced edge.

orientation: Orientation

Traversal direction.

pcurve: Option<G>

Optional 2D curve handle in the owning face’s surface parameters.

Trait Implementations

impl<G> Clone for EdgeUse<G>

where G: Clone,

fn clone(&self) -> EdgeUse<G>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<G> Debug for EdgeUse<G>

where G: Debug,

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

Formats the value using the given formatter.

impl<G> Hash for EdgeUse<G>

where G: Hash,

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

where __H: Hasher,

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<G> PartialEq for EdgeUse<G>

where G: PartialEq,

fn eq(&self, other: &EdgeUse<G>) -> 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<G> Copy for EdgeUse<G>

where G: Copy,

impl<G> Eq for EdgeUse<G>

where G: Eq,

impl<G> StructuralPartialEq for EdgeUse<G>