Struct EllipseCurve 

pub struct EllipseCurve { /* private fields */ }

An ellipse, parameterized by eccentric angle.

Implementations

impl EllipseCurve

pub const fn new(ellipse: Ellipse) -> Self

A full ellipse.

pub const fn ellipse(&self) -> Ellipse

The underlying ellipse.

pub const fn is_reversed(&self) -> bool

Whether the curve runs backwards along its underlying ellipse.

Part of the curve’s state and not derivable from its ellipse, so anything that has to reproduce this curve exactly (the native format above all) needs to be able to read it.

pub fn forward(&self, tol: Tolerances) -> OgeomResult<Self>

The same curve, the same point at every parameter, running forward, as CircleCurve::forward.

Errors

None in practice: the turned frame is the given one’s axes negated.

Trait Implementations

impl Clone for EllipseCurve

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for EllipseCurve

impl Curve3d for EllipseCurve

fn domain(&self) -> (f64, f64)

The parameter interval over which the curve is defined.

fn point_at(&self, u: f64, tol: Tolerances) -> OgeomResult<Point>

The point at u.

fn d1_at(&self, u: f64, tol: Tolerances) -> OgeomResult<Vector>

The first derivative at u.

fn derivatives_at( &self, u: f64, n: usize, tol: Tolerances, ) -> OgeomResult<Vec<Vector>>

Derivatives up to order n, with result[0] the point itself.

fn kind(&self) -> CurveKind

What kind of curve this is.

fn continuity(&self) -> Continuity

How smooth the curve is across its domain.

fn is_closed(&self, _tol: Tolerances) -> bool

Whether the curve’s ends meet.

fn is_periodic(&self) -> bool

Whether the curve continues past its domain by repeating.

fn tangent_at(&self, u: f64, tol: Tolerances) -> OgeomResult<Direction>

The unit tangent at u.

fn curvature_at(&self, u: f64, tol: Tolerances) -> OgeomResult<f64>

The curvature at u.

fn start(&self, tol: Tolerances) -> OgeomResult<Point>

The start point.

fn end(&self, tol: Tolerances) -> OgeomResult<Point>

The end point.

fn normalize_parameter(&self, u: f64, tol: Tolerances) -> OgeomResult<f64>

Bring u into the domain, wrapping if the curve is periodic.

impl Debug for EllipseCurve

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

Formats the value using the given formatter.

impl From<EllipseCurve> for Curve

fn from(c: EllipseCurve) -> Self

Converts to this type from the input type.

impl PartialEq for EllipseCurve

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for EllipseCurve