Enum AnimationInterpolationFunction 

#[repr(C, u8)]
pub enum AnimationInterpolationFunction {
    Ease,
    Linear,
    EaseIn,
    EaseOut,
    EaseInOut,
    CubicBezier(SvgCubicCurve),
    Spring(SpringCurve),
}

Represents an animation timing function.

Variants

Ease

Linear

EaseIn

EaseOut

EaseInOut

CubicBezier(SvgCubicCurve)

Spring(SpringCurve)

A physical spring rather than a fixed-duration curve.

Unlike every other variant this one has NO duration: it runs until the mass settles. That is the point — a spring can be retargeted mid-flight while preserving position AND velocity, so an interrupted animation bends toward the new target instead of restarting from a standstill. A bezier cannot express that, which is why engine-driven layout transitions default to this.

Implementations

impl AnimationInterpolationFunction

pub const fn get_curve(self) -> SvgCubicCurve

Returns the cubic bezier curve corresponding to this timing function.

pub const fn is_spring(self) -> bool

Whether this function is a physical spring, and therefore has no duration and cannot be evaluated as a curve.

Callers that own a timeline must branch on this: asking a spring for its value at t silently gives them an ease-in-out instead.

pub fn evaluate(self, t: f64) -> f32

Evaluates the interpolation function at time t, returning the eased value.

For a spring this evaluates the ease-in-out stand-in from Self::get_curve; integrate the spring instead if you need its real trajectory.

Trait Implementations

impl Clone for AnimationInterpolationFunction

fn clone(&self) -> AnimationInterpolationFunction

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for AnimationInterpolationFunction

impl Debug for AnimationInterpolationFunction

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

Formats the value using the given formatter.

impl PartialEq for AnimationInterpolationFunction

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for AnimationInterpolationFunction