Trait splines::interpolate::Interpolate
source · pub trait Interpolate<T>: Sized + Copy {
// Required methods
fn step(t: T, threshold: T, a: Self, b: Self) -> Self;
fn lerp(t: T, a: Self, b: Self) -> Self;
fn cosine(t: T, a: Self, b: Self) -> Self;
fn cubic_hermite(
t: T,
x: (T, Self),
a: (T, Self),
b: (T, Self),
y: (T, Self)
) -> Self;
fn quadratic_bezier(t: T, a: Self, u: Self, b: Self) -> Self;
fn cubic_bezier(t: T, a: Self, u: Self, v: Self, b: Self) -> Self;
fn cubic_bezier_mirrored(t: T, a: Self, u: Self, v: Self, b: Self) -> Self;
}Expand description
Values that can be interpolated. Implementing this trait is required to perform sampling on splines.
T is the interpolator used to sample with. Typical implementations use [f32] or [f64], but
you’re free to use the ones you like.
Required Methods§
sourcefn cubic_hermite(
t: T,
x: (T, Self),
a: (T, Self),
b: (T, Self),
y: (T, Self)
) -> Self
fn cubic_hermite( t: T, x: (T, Self), a: (T, Self), b: (T, Self), y: (T, Self) ) -> Self
Cubic hermite interpolation.
sourcefn quadratic_bezier(t: T, a: Self, u: Self, b: Self) -> Self
fn quadratic_bezier(t: T, a: Self, u: Self, b: Self) -> Self
Quadratic Bézier interpolation.
a is the first point; b is the second point and u is the tangent of a to the curve.
sourcefn cubic_bezier(t: T, a: Self, u: Self, v: Self, b: Self) -> Self
fn cubic_bezier(t: T, a: Self, u: Self, v: Self, b: Self) -> Self
Cubic Bézier interpolation.
a is the first point; b is the second point; u is the output tangent of a to the curve and v is the
input tangent of b to the curve.
sourcefn cubic_bezier_mirrored(t: T, a: Self, u: Self, v: Self, b: Self) -> Self
fn cubic_bezier_mirrored(t: T, a: Self, u: Self, v: Self, b: Self) -> Self
Cubic Bézier interpolation – special case for non-explicit second tangent.
This version does the same computation as Interpolate::cubic_bezier but computes the second tangent by
inversing it (typical when the next point uses a Bézier interpolation, where input and output tangents are
mirrored for the same key).
Object Safety§
This trait is not object safe.