Struct Spring 

pub struct Spring {
    pub damping: f32,
    pub stiffness: f32,
}

A Material 3 spring (damping ratio, stiffness; unit mass). The constants below are the Standard motion scheme’s tokens (md3.io has no Standard scheme, so m3e is the source), which m3e generates from Compose StandardMotionTokens.kt (L20-L31) and lists in tokens.css as --m3e-sys-motion-spring-standard-*. Spatial springs move or reshape something and may settle with a barely visible overshoot; effects springs fade color and opacity and never overshoot.

Fields

damping: f32

stiffness: f32

Implementations

impl Spring

pub fn sanitized(self) -> Self

The same spring with damping and stiffness clamped to finite, positive values. NaN damping falls back to critical damping and NaN stiffness to the minimum.

pub fn duration(self) -> Duration

Compose’s settle estimate for a 0 → 1 move at a 0.1% visibility threshold, in whole milliseconds and at least 1ms: the -duration m3e derives for every spring token (packages/m3e-motion/src/linear.ts, FloatSpringSpec.getDurationNanos).

pub fn position(self, seconds: f32) -> f32

Position from rest at 0 toward 1 after seconds.

pub fn ease(self) -> impl Fn(f32) -> f32 + Copy + 'static

The spring as an easing over its own duration, ending exactly at 1.

Trait Implementations

impl Clone for Spring

fn clone(&self) -> Spring

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Spring

impl Debug for Spring

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

Formats the value using the given formatter.

impl PartialEq for Spring

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Spring