Struct PeriodicCurve2

pub struct PeriodicCurve2<'a> { /* private fields */ }

Verified closed-seam extension of a planar B-spline curve.

This view does not reinterpret the curve as an algebraically periodic knot vector. It validates the declared geometric seam and wraps only through the explicit methods below. The borrowed neutral curve remains unchanged.

Implementations

impl<'a> PeriodicCurve2<'a>

pub fn try_new( curve: &'a BSplineCurve<DVec2>, tolerance: Tolerance, ) -> Result<PeriodicCurve2<'a>, GeomError>

Validate closed metadata and at least positional seam continuity.

pub const fn domain(self) -> (f64, f64)

Native active parameter domain retained by this view.

pub const fn seam_continuity(self) -> SeamContinuity

Highest endpoint continuity verified during construction.

pub fn wrap_parameter(self, parameter: f64) -> Result<f64, GeomError>

Wrap a finite parameter into the native active domain.

An in-domain upper endpoint remains the upper endpoint so one-sided endpoint jets retain the neutral evaluator’s existing semantics.

pub fn evaluate(self, parameter: f64) -> Result<DVec2, GeomError>

Evaluate the closed-seam extension at any finite parameter.

pub fn jet(self, parameter: f64) -> Result<CurveJet<DVec2, DVec2>, GeomError>

Evaluate point, first derivative, and second derivative after wrapping.

pub fn insert_knot( self, parameter: f64, ) -> Result<BSplineCurve<DVec2>, GeomError>

Insert a shape-preserving knot at a periodic-equivalent interior parameter.

Exterior parameters are canonicalized. Parameters equivalent to either seam endpoint are rejected because clamped endpoint multiplicity cannot be increased as an interior edit.

pub fn split_at( self, parameter: f64, ) -> Result<(BSplineCurve<DVec2>, BSplineCurve<DVec2>), GeomError>

Split at a periodic-equivalent interior parameter into two open curves.

The operation cuts the cycle; neither output retains closed metadata.

Trait Implementations

impl<'a> Clone for PeriodicCurve2<'a>

fn clone(&self) -> PeriodicCurve2<'a>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for PeriodicCurve2<'a>

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

Formats the value using the given formatter.

impl<'a> Copy for PeriodicCurve2<'a>