pub struct CubicBezier<P: Point> { /* private fields */ }
Expand description

A spline composed of a single cubic Bezier curve.

Useful for user-drawn curves with local control, or animation easing. See CubicSegment::new_bezier for use in easing.

Interpolation

The curve only passes through the first and last control point in each set of four points.

Tangency

Manually defined by the two intermediate control points within each set of four points.

Continuity

At minimum C0 continuous, up to C2. Continuity greater than C0 can result in a loss of local control over the spline due to the curvature constraints.

Usage

let points = [[
    vec2(-1.0, -20.0),
    vec2(3.0, 2.0),
    vec2(5.0, 3.0),
    vec2(9.0, 8.0),
]];
let bezier = CubicBezier::new(points).to_curve();
let positions: Vec<_> = bezier.iter_positions(100).collect();

Implementations§

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impl<P: Point> CubicBezier<P>

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pub fn new(control_points: impl Into<Vec<[P; 4]>>) -> Self

Create a new cubic Bezier curve from sets of control points.

Trait Implementations§

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impl<P: Point> CubicGenerator<P> for CubicBezier<P>

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fn to_curve(&self) -> CubicCurve<P>

Build a CubicCurve by computing the interpolation coefficients for each curve segment.

Auto Trait Implementations§

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impl<P> RefUnwindSafe for CubicBezier<P>
where P: RefUnwindSafe,

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impl<P> Send for CubicBezier<P>
where P: Send,

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impl<P> Sync for CubicBezier<P>
where P: Sync,

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impl<P> Unpin for CubicBezier<P>
where P: Unpin,

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impl<P> UnwindSafe for CubicBezier<P>
where P: UnwindSafe,

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.