Struct BouncingScrollSimulation 

pub struct BouncingScrollSimulation { /* private fields */ }

iOS’s fling: exponential friction while the position is in range, handing over to a rubber-band spring at whichever edge the fling reaches.

Implementations

impl BouncingScrollSimulation

pub const MAX_SPRING_TRANSFER_VELOCITY: f64 = 5000.0

The fastest velocity handed to an edge spring. A fling arriving faster transfers this instead, so an arbitrarily hard flick cannot turn into an arbitrarily deep bounce.

pub const FRICTION_DRAG: f64 = 0.135

The friction phase’s drag: UIScrollView’s normal deceleration rate is 0.998 per millisecond, and 0.998^1000 ≈ 0.135 per second.

pub fn new( position: f64, velocity: f64, leading_extent: f64, trailing_extent: f64, spring: SpringDescription, tolerance: Tolerance, constant_deceleration: f64, ) -> Self

A fling from position at velocity px/s within leading_extent..=trailing_extent, bouncing off whichever edge it reaches (or starting mid-bounce if position is already outside).

Trait Implementations

impl Clone for BouncingScrollSimulation

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 BouncingScrollSimulation

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

Formats the value using the given formatter.

impl Simulation for BouncingScrollSimulation

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.