Struct Spring 

pub struct Spring { /* private fields */ }

Physics-based spring animation.

Simulates a damped harmonic oscillator to create natural-feeling motion with overshoot and settling behavior.

Implementations

impl Spring

pub const THRESHOLD: f64 = 0.005

Threshold for determining when the spring has settled.

pub const fn new( mass: f64, stiffness: f64, damping: f64, initial_velocity: f64, ) -> Self

Creates a new spring with the given physics parameters.

Arguments

• mass - The mass of the spring (affects momentum)
• stiffness - How “tight” the spring is (higher = faster oscillation)
• damping - How quickly oscillations die down (higher = less bouncy)
• initial_velocity - Starting velocity of the animation

pub const fn gentle() -> Self

Slower, smoother motion

pub const fn bouncy() -> Self

More overshoot, longer settling time

pub const fn snappy() -> Self

Quick response, minimal overshoot

pub fn eval(&self, time: f64) -> f64

Evaluates the spring position at the given time.

pub fn finished(&self, time: f64) -> bool

Returns whether the spring has settled at the given time.

pub fn velocity(&self, time: f64) -> f64

Returns the velocity of the spring at the given time.

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 Debug for Spring

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

Formats the value using the given formatter.

impl Default for Spring

fn default() -> Self

Returns the “default value” for a type.

impl Easing for Spring

fn eval(&self, time: f64) -> f64

Evaluates the easing function at the given time.

fn velocity(&self, time: f64) -> Option<f64>

Returns the velocity at the given time, if available.

fn finished(&self, time: f64) -> bool

Returns whether the animation has finished at the given time.

impl Copy for Spring