Enum StationCurve 

#[non_exhaustive]
pub enum StationCurve<'c> {
    Two(&'c Curve2),
    Three(&'c Curve3),
    Offset(StationOffset<'c>),
}

The atomic curve under a StationPiece.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Two(&'c Curve2)

A 2D curve, lying in z = 0.

Three(&'c Curve3)

A 3D curve.

Offset(StationOffset<'c>)

An offset of a base piece, measured in its own length (#289; see the offset module).

Implementations

impl<'c> StationCurve<'c>

pub fn from_path_curve( curve: &'c PathCurve, ) -> Result<StationCurve<'c>, GeomError>

The station curve of a path piece’s curve, borrowed from it.

Errors

A piece kind this evaluator does not know, by name.

impl StationCurve<'_>

pub fn convention(self) -> DistanceConvention

The distance convention a station on this curve is measured in: plan distance on an elevated or banked curve, arc length on every other (a 2D curve’s arc length is its plan length). An offset is measured as its base is (#289).

pub fn parameter_at_bound(self, bound: PathBound) -> Result<f64, GeomError>

The native parameter a path piece bound names on the curve (#304): a parameter as it is, a point the one parameter naming it (see the path-bound module).

Errors

A bound that is not finite; a point off the curve, named by several parameters, or on a curve this evaluator does not invert; each by name.

Trait Implementations

impl<'c> Clone for StationCurve<'c>

fn clone(&self) -> StationCurve<'c>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'c> Copy for StationCurve<'c>

impl<'c> Debug for StationCurve<'c>

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

Formats the value using the given formatter.

impl<'c> PartialEq for StationCurve<'c>

fn eq(&self, other: &StationCurve<'c>) -> bool

Equality operator ==.

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

Inequality operator !=.

impl<'c> StructuralPartialEq for StationCurve<'c>