Enum PlanarCurve 

pub enum PlanarCurve {
    Line(Line2d),
    Circle(Circle2d),
    Ellipse(Ellipse2d),
    Hyperbola(Hyperbola2d),
    BSpline(BSpline2d),
    Trimmed(Box<Trimmed2d>),
    Offset(Box<Offset2d>),
    Trig(Trig2d),
}

A curve in the plane.

Variants

Line(Line2d)

A straight line.

Circle(Circle2d)

A circle or arc.

Ellipse(Ellipse2d)

An ellipse or arc.

Hyperbola(Hyperbola2d)

One branch of a hyperbola.

BSpline(BSpline2d)

A polynomial or rational B-spline.

Trimmed(Box<Trimmed2d>)

Another planar curve restricted to a sub-interval.

Offset(Box<Offset2d>)

A curve at a constant signed distance along another’s left normal.

Trig(Trig2d)

An affine-plus-trigonometric curve: c + d·t + a·cos t + b·sin t: the exact chart trace of an oblique analytic section on a periodic surface.

Implementations

impl PlanarCurve

pub fn transformed(&self, t: &Transform2, tol: Tolerances) -> OgeomResult<Self>

This curve moved by a planar similarity.

Errors

OgeomError::Construction if the result would be degenerate.

impl PlanarCurve

pub fn stretched(&self, su: f64, sv: f64, tol: Tolerances) -> OgeomResult<Self>

This curve with each point’s coordinates stretched, u by su and v by sv, at the same parameters: the image a chart curve takes when its surface’s length directions rescale unevenly (a cylinder’s height under a scaling, its angle not). Equal factors are a plain scaling about the chart’s origin.

Errors

OgeomError::Construction for an uneven stretch of a circle, an ellipse, an offset or a trigonometric curve, whose stretched image no curve here states at the same parameters.

Trait Implementations

impl Clone for PlanarCurve

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Curve2d for PlanarCurve

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

The parameter interval over which the curve is defined.

fn point_at(&self, u: f64, tol: Tolerances) -> OgeomResult<Point2>

The point at u.

fn d1_at(&self, u: f64, tol: Tolerances) -> OgeomResult<Vector2>

The first derivative at u.

fn derivatives_at( &self, u: f64, n: usize, tol: Tolerances, ) -> OgeomResult<Vec<Vector2>>

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

fn kind(&self) -> CurveKind

What kind of curve this is.

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 start(&self, tol: Tolerances) -> OgeomResult<Point2>

The start point.

fn end(&self, tol: Tolerances) -> OgeomResult<Point2>

The end point.

impl Debug for PlanarCurve

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

Formats the value using the given formatter.

impl From<BSpline2d> for PlanarCurve

fn from(c: BSpline2d) -> Self

Converts to this type from the input type.

impl From<Circle2d> for PlanarCurve

fn from(c: Circle2d) -> Self

Converts to this type from the input type.

impl From<Ellipse2d> for PlanarCurve

fn from(c: Ellipse2d) -> Self

Converts to this type from the input type.

impl From<Hyperbola2d> for PlanarCurve

fn from(c: Hyperbola2d) -> Self

Converts to this type from the input type.

impl From<Line2d> for PlanarCurve

fn from(c: Line2d) -> Self

Converts to this type from the input type.

impl From<Trimmed2d> for PlanarCurve

fn from(c: Trimmed2d) -> Self

Converts to this type from the input type.

impl PartialEq for PlanarCurve

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

Equality operator ==.

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

Inequality operator !=.

impl Reversible for PlanarCurve

fn reversed(&self) -> Self

This geometry with its parameter direction reversed.

impl StructuralPartialEq for PlanarCurve