Enum ElementClass 

pub enum ElementClass {
    Point,
    Polyline,
    Region,
    Collection,
}

The geometric and referential nature of an element kind (spec §4.1).

The class list is closed in this revision; extending it is an additive spec change in this layer, never an engine decision. A subcatchment is the proof case for ElementClass::Region: it is neither a node nor a link, and a taxonomy offering only those two classes would have baked one engine family’s shape into the foundation.

Variants

Point

A located element: one coordinate. May anchor Polyline ends and Region discharge references.

Polyline

A connecting element: references a from-point and a to-point, with optional intermediate vertices.

Region

An areal element: a polygon boundary, with an optional reference to a Point element it discharges to.

Collection

A non-spatial named object (a curve, a pattern, a time series, a control). Enumerable and countable; presentation is application-defined and may be engine-specific.

Trait Implementations

impl Clone for ElementClass

fn clone(&self) -> ElementClass

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ElementClass

impl Debug for ElementClass

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ElementClass

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for ElementClass

impl PartialEq for ElementClass

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for ElementClass

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for ElementClass