Struct EdgeChain 

pub struct EdgeChain;

The tangent chain of edges through an edge of the model (see tangent_chain): named by any edge of it, and selected by the smallest name of its edges, the one name a dialog holds it by however it was picked.

Trait Implementations

impl HasElements<EdgeChain> for NamedModel

const SINGLETON: Option<&'static str>

The name of the one target of this type a part has, if it has only one — the topology, say: a reference into it is saved as the element’s name alone.

type Element<'a> = ChainElement<'a>

What an element resolves to: a borrow of it, or what it gives.

fn element(&self, name: &str) -> GeopResult<ChainElement<'_>>

The element name, or why there is none.

fn undefined() -> Option<&'static Self>

What the target reads as where no step made it, if it reads as anything then — the datums every part starts with. None by default: reading it fails.

fn names_target(name: &str) -> bool

Whether the target named name could be one of this type: what tells a pick of an element of it from one of a target of another type with elements of the same kind (ElementReference::from_picked). The singleton’s name, for a singleton; any name, by default.

impl Kind for EdgeChain

const NAME: &'static str = "edge_chain"

The kind’s name, as a pick says what it picked: "edge".

impl SelectableElement<NamedModel> for EdgeChain

An edge chain is picked by an edge of it, held by the smallest name of its edges, and lit as all of them.

const PICKED_FROM: &'static [&'static str]

The kinds of what an editor draws that a click picks one from (see crate::editing::hit::Scene::pick): its own kind, for an element drawn as itself.

fn select( reader: &Reader<'_>, hit: &PickedElement, ) -> Option<ElementReference<NamedModel, Self>>

The element a click on hit, of one of Self::PICKED_FROM, selects, read through reader: hit itself, for an element drawn as itself; none, for a hit that selects none.

fn drawn( reader: &Reader<'_>, chain: &ElementReference<NamedModel, Self>, ) -> Vec<PickedElement>

What an editor draws of element, to light while it is selected: the element itself, by default.