Enum ProjectedCurve 

pub enum ProjectedCurve {
    Point(Point2),
    Line {
        start: Point2,
        end: Point2,
    },
    Circle {
        centre: Point2,
        radius: f64,
        range: (f64, f64),
    },
    Ellipse {
        centre: Point2,
        major: Vector2,
        ratio: f64,
        range: (f64, f64),
    },
    Parabola {
        vertex: Point2,
        axis: Vector2,
        focal: f64,
        range: (f64, f64),
    },
    Hyperbola {
        centre: Point2,
        major: Vector2,
        minor: Vector2,
        range: (f64, f64),
    },
    BSpline {
        curve: BSpline2d,
        fit_error: Option<f64>,
    },
}

An edge’s orthogonal projection onto a plane, in the plane frame’s x and y coordinates.

Variants

Point(Point2)

The edge projects to one point: a line along the plane’s normal.

Line

A segment.

Fields

start: Point2

One end.

end: Point2

The other end.

Circle

A circle or circular arc, centre + radius (cos t, sin t), turning counter-clockwise about the plane’s normal from range.0 to range.1; a full turn where the range spans one.

Fields

centre: Point2

The centre.

radius: f64

The radius.

range: (f64, f64)

The arc’s angles, range.0 < range.1.

Ellipse

An ellipse or elliptical arc, centre + major cos t + minor sin t with minor the major axis turned a quarter counter-clockwise and scaled by ratio, from range.0 to range.1.

Fields

centre: Point2

The centre.

major: Vector2

The major semi-axis, as a vector.

ratio: f64

The minor semi-axis over the major, in (0, 1).

range: (f64, f64)

The arc’s eccentric angles, range.0 < range.1.

Parabola

A parabola or a piece of one, vertex + axis s^2 / (4 focal) + side s with axis a unit vector and side it turned a quarter counter-clockwise, over s from range.0 to range.1. s is the edge’s own parameter scaled and shifted, increasing with it or against it.

Fields

vertex: Point2

The vertex.

axis: Vector2

The unit direction the parabola opens in.

focal: f64

The distance from the vertex to the focus.

range: (f64, f64)

The piece’s parameters, range.0 < range.1.

Hyperbola

A hyperbola’s branch or a piece of one, centre + major cosh s + minor sinh s with major and minor square, over s from range.0 to range.1: the edge’s own parameter shifted.

Fields

centre: Point2

The centre, off the branch.

major: Vector2

The major semi-axis: centre to vertex.

minor: Vector2

The minor semi-axis, square to the major.

range: (f64, f64)

The piece’s parameters, range.0 < range.1.

BSpline

A B-spline: exact for a B-spline edge, fitted for any other curve at the edge’s own parameter, with the fit’s largest miss in fit_error.

Fields

curve: BSpline2d

The curve.

fit_error: Option<f64>

None where the projection is exact.

Trait Implementations

impl Clone for ProjectedCurve

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ProjectedCurve

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

Formats the value using the given formatter.

impl PartialEq for ProjectedCurve

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ProjectedCurve