Struct ScrollSpringSimulation 

pub struct ScrollSpringSimulation { /* private fields */ }

A SpringSimulation that reports exactly end once settled, rather than the residual sub-tolerance displacement the closed form still carries.

The scroll surfaces’ spring: a bounce-back must leave the position on the edge value it was springing to, not a fraction of a pixel off it, or the next gesture starts from a technically-overscrolled position.

Implementations

impl ScrollSpringSimulation

pub fn new( spring: SpringDescription, start: f64, end: f64, velocity: f64, tolerance: Tolerance, ) -> Self

A spring released at start moving velocity px/s, pulling toward end, snapping onto end once settled.

pub fn end(&self) -> f64

The position this spring settles onto.

pub fn spring_type(&self) -> SpringType

Which solution class the spring’s parameters resolved to.

Trait Implementations

impl Clone for ScrollSpringSimulation

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ScrollSpringSimulation

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

Formats the value using the given formatter.

impl Simulation for ScrollSpringSimulation

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

The position at time seconds.

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

The velocity at time seconds.

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

Whether the simulation has settled (within its own tolerance) by time seconds.