pub struct CubicCardinalSpline<P>
where P: Point,
{ /* private fields */ }
Expand description

A spline interpolated continuously across the nearest four control points, with the position of the curve specified at every control point and the tangents computed automatically.

Note the Catmull-Rom spline is a special case of Cardinal spline where the tension is 0.5.

Interpolation

The curve passes through every control point.

Tangency

Tangents are automatically computed based on the positions of control points.

Continuity

The curve is at minimum C0 continuous, meaning it has no holes or jumps. It is also C1, meaning the tangent vector has no sudden jumps.

Usage

let points = [
    vec2(-1.0, -20.0),
    vec2(3.0, 2.0),
    vec2(5.0, 3.0),
    vec2(9.0, 8.0),
];
let cardinal = CubicCardinalSpline::new(0.3, points).to_curve();
let positions: Vec<_> = cardinal.iter_positions(100).collect();

Implementations§

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impl<P> CubicCardinalSpline<P>
where P: Point,

pub fn new( tension: f32, control_points: impl Into<Vec<P>> ) -> CubicCardinalSpline<P>

Build a new Cardinal spline.

pub fn new_catmull_rom( control_points: impl Into<Vec<P>> ) -> CubicCardinalSpline<P>

Build a new Catmull-Rom spline, the special case of a Cardinal spline where tension = 1/2.

Trait Implementations§

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impl<P> CubicGenerator<P> for CubicCardinalSpline<P>
where P: Point,

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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 CubicCardinalSpline<P>
where P: RefUnwindSafe,

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

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

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

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

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where T: 'static + ?Sized,

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