Struct Reverse 

pub struct Reverse<P> { /* private fields */ }

A path traversed in the opposite direction.

Sampling at arc-length s returns the position the inner path would have at length - s. Tangent vectors are negated; signed curvature is negated.

Implementations

impl<P> Reverse<P>

pub fn new(inner: P) -> Self

Create a new reversed path.

Trait Implementations

impl<P: Curved> Curved for Reverse<P>

where P::Curvature: Neg<Output = P::Curvature>,

type Curvature = <P as Curved>::Curvature

The type representing curvature (scalar in 2D, vector in 3D).

fn curvature_at(&self, s: Self::Scalar) -> Result<Self::Curvature, Self::Error>

Curvature at arc-length s.

impl<P: Path> Path for Reverse<P>

type Scalar = <P as Path>::Scalar

The scalar type for arc-length, parameter, and distance computations.

type Point = <P as Path>::Point

The point type representing positions on the path.

type Error = <P as Path>::Error

The error type for fallible operations. Must be convertible from PathError<Self::Scalar>.

fn length(&self) -> Self::Scalar

Total arc-length of the path.

fn sample_at(&self, s: Self::Scalar) -> Result<Self::Point, Self::Error>

Sample the path at arc-length s ∈ [0, length].

fn start(&self) -> Result<Self::Point, Self::Error>

The start point of the path, equivalent to sample_at(0).

fn end(&self) -> Result<Self::Point, Self::Error>

The end point of the path, equivalent to sample_at(length).

fn domain(&self) -> RangeInclusive<Self::Scalar>

The valid domain for arc-length sampling: [0, length].

impl<P: Tangent> Tangent for Reverse<P>

fn tangent_at( &self, s: Self::Scalar, ) -> Result<<Self::Point as Point>::Vector, Self::Error>

Unit tangent vector at arc-length s.