Enum PathPiece 

#[non_exhaustive]
pub enum PathPiece {
    Segment {
        start: Point3,
        end: Point3,
    },
    Arc {
        centre: Point3,
        axis: Vec3,
        start: Point3,
        angle: Scalar,
    },
}

One smooth piece of a swept disk’s directrix.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Segment

A straight segment from start to end.

Fields

start: Point3

First point, in the direction of travel.

end: Point3

Last point.

Arc

A circular arc: start turned by angle radians, right-handed, about the line through centre along the unit axis. start - centre must be perpendicular to axis; a negative angle turns the other way.

Fields

centre: Point3

Centre of the arc’s circle.

axis: Vec3

Unit normal of the arc’s plane.

start: Point3

First point, in the direction of travel.

angle: Scalar

Signed turn, at most a full turn either way.

Implementations

impl PathPiece

pub fn start_point(&self) -> Point3

The first point, in the direction of travel.

pub fn end_point(&self) -> Point3

The last point, in the direction of travel.

pub fn point(&self, s: Scalar) -> Point3

The point a fraction s of the way along, by length.

pub fn start_tangent(&self) -> Vec3

The unit tangent at the start, in the direction of travel.

pub fn end_tangent(&self) -> Vec3

The unit tangent at the end, in the direction of travel.

pub fn length(&self) -> Scalar

The length along the piece.

pub fn reversed(&self) -> Self

The same piece walked the other way.

pub fn between(&self, from: Scalar, to: Scalar) -> Self

The part between the fractions from and to of its length, in that order (to < from walks it backwards).

Trait Implementations

impl Clone for PathPiece

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 PathPiece

impl Debug for PathPiece

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

Formats the value using the given formatter.

impl PartialEq for PathPiece

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for PathPiece