Trait lyon_geom::Segment

pub trait Segment: Copy + Sized {
    type Scalar: Scalar;
    fn from(&self) -> Point<Self::Scalar>;
    fn to(&self) -> Point<Self::Scalar>;
    fn sample(&self, t: Self::Scalar) -> Point<Self::Scalar>;
    fn derivative(&self, t: Self::Scalar) -> Vector<Self::Scalar>;
    fn split(&self, t: Self::Scalar) -> (Self, Self);
    fn before_split(&self, t: Self::Scalar) -> Self;
    fn after_split(&self, t: Self::Scalar) -> Self;
    fn split_range(&self, t_range: Range<Self::Scalar>) -> Self;
    fn flip(&self) -> Self;
    fn approximate_length(&self, tolerance: Self::Scalar) -> Self::Scalar;

    fn x(&self, t: Self::Scalar) -> Self::Scalar { ... }
    fn y(&self, t: Self::Scalar) -> Self::Scalar { ... }
    fn dx(&self, t: Self::Scalar) -> Self::Scalar { ... }
    fn dy(&self, t: Self::Scalar) -> Self::Scalar { ... }
}

Common APIs to segment types.

Associated Types

type Scalar: Scalar

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Required methods

fn from(&self) -> Point<Self::Scalar>

Start of the curve.

fn to(&self) -> Point<Self::Scalar>

End of the curve.

fn sample(&self, t: Self::Scalar) -> Point<Self::Scalar>

Sample the curve at t (expecting t between 0 and 1).

fn derivative(&self, t: Self::Scalar) -> Vector<Self::Scalar>

Sample the derivative at t (expecting t between 0 and 1).

fn split(&self, t: Self::Scalar) -> (Self, Self)

Split this curve into two sub-curves.

fn before_split(&self, t: Self::Scalar) -> Self

Return the curve before the split point.

fn after_split(&self, t: Self::Scalar) -> Self

Return the curve after the split point.

fn split_range(&self, t_range: Range<Self::Scalar>) -> Self

Return the curve inside a given range of t.

This is equivalent splitting at the range's end points.

fn flip(&self) -> Self

Swap the direction of the segment.

fn approximate_length(&self, tolerance: Self::Scalar) -> Self::Scalar

Compute the length of the segment using a flattened approximation.

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Provided methods

fn x(&self, t: Self::Scalar) -> Self::Scalar

Sample x at t (expecting t between 0 and 1).

fn y(&self, t: Self::Scalar) -> Self::Scalar

Sample y at t (expecting t between 0 and 1).

fn dx(&self, t: Self::Scalar) -> Self::Scalar

Sample x derivative at t (expecting t between 0 and 1).

fn dy(&self, t: Self::Scalar) -> Self::Scalar

Sample y derivative at t (expecting t between 0 and 1).

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Implementors

impl<S: Scalar> Segment for Arc<S>

type Scalar = S

fn from(&self) -> Point<S>

fn to(&self) -> Point<S>

fn sample(&self, t: S) -> Point<S>

fn x(&self, t: S) -> S

fn y(&self, t: S) -> S

fn derivative(&self, t: S) -> Vector<S>

fn split_range(&self, t_range: Range<S>) -> Self

fn split(&self, t: S) -> (Self, Self)

fn before_split(&self, t: S) -> Self

fn after_split(&self, t: S) -> Self

fn flip(&self) -> Self

fn approximate_length(&self, tolerance: S) -> S

impl<S: Scalar> Segment for CubicBezierSegment<S>

type Scalar = S

fn from(&self) -> Point<S>

fn to(&self) -> Point<S>

fn sample(&self, t: S) -> Point<S>

fn x(&self, t: S) -> S

fn y(&self, t: S) -> S

fn derivative(&self, t: S) -> Vector<S>

fn dx(&self, t: S) -> S

fn dy(&self, t: S) -> S

fn split(&self, t: S) -> (Self, Self)

fn before_split(&self, t: S) -> Self

fn after_split(&self, t: S) -> Self

fn split_range(&self, t_range: Range<S>) -> Self

fn flip(&self) -> Self

fn approximate_length(&self, tolerance: S) -> S

impl<S: Scalar> Segment for QuadraticBezierSegment<S>

type Scalar = S

fn from(&self) -> Point<S>

fn to(&self) -> Point<S>

fn sample(&self, t: S) -> Point<S>

fn x(&self, t: S) -> S

fn y(&self, t: S) -> S

fn derivative(&self, t: S) -> Vector<S>

fn dx(&self, t: S) -> S

fn dy(&self, t: S) -> S

fn split(&self, t: S) -> (Self, Self)

fn before_split(&self, t: S) -> Self

fn after_split(&self, t: S) -> Self

fn split_range(&self, t_range: Range<S>) -> Self

fn flip(&self) -> Self

fn approximate_length(&self, tolerance: S) -> S

impl<S: Scalar> Segment for LineSegment<S>

type Scalar = S

fn from(&self) -> Point<S>

fn to(&self) -> Point<S>

fn sample(&self, t: S) -> Point<S>

fn x(&self, t: S) -> S

fn y(&self, t: S) -> S

fn derivative(&self, _t: S) -> Vector<S>

fn dx(&self, _t: S) -> S

fn dy(&self, _t: S) -> S

fn split_range(&self, t_range: Range<S>) -> Self

fn split(&self, t: S) -> (Self, Self)

fn before_split(&self, t: S) -> Self

fn after_split(&self, t: S) -> Self

fn flip(&self) -> Self

fn approximate_length(&self, _tolerance: S) -> S

impl<T: Segment> Segment for Monotonic<T>

type Scalar = T::Scalar

fn from(&self) -> Point<T::Scalar>

fn to(&self) -> Point<T::Scalar>

fn sample(&self, t: T::Scalar) -> Point<T::Scalar>

fn x(&self, t: T::Scalar) -> T::Scalar

fn y(&self, t: T::Scalar) -> T::Scalar

fn derivative(&self, t: T::Scalar) -> Vector<T::Scalar>

fn dx(&self, t: T::Scalar) -> T::Scalar

fn dy(&self, t: T::Scalar) -> T::Scalar

fn split(&self, t: T::Scalar) -> (Self, Self)

fn before_split(&self, t: T::Scalar) -> Self

fn after_split(&self, t: T::Scalar) -> Self

fn split_range(&self, t_range: Range<T::Scalar>) -> Self

fn flip(&self) -> Self

fn approximate_length(&self, tolerance: T::Scalar) -> T::Scalar

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