Struct SnapSimulation 

pub struct SnapSimulation { /* private fields */ }

The motion of a sheet to the stop it is settling on: a constant speed — the release’s, or SHEET_SNAP_MIN_SPEED if that is slower — that stops dead on the stop. The reference’s own, and deliberately not a spring: a sheet that overshot its stop would uncover and cover again whatever is behind it.

Implementations

impl SnapSimulation

pub fn new(position: f32, velocity: f32, target: f32) -> Self

From position towards target, released at velocity. The direction is the target’s, not the velocity’s: a slow release can settle against its own motion.

pub fn target(&self) -> f32

Where it is heading.

pub fn velocity(&self) -> f32

The speed it travels at, in px/s — the same from start to stop.

Trait Implementations

impl Clone for SnapSimulation

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SnapSimulation

impl Debug for SnapSimulation

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

Formats the value using the given formatter.

impl PartialEq for SnapSimulation

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

Equality operator ==.

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

Inequality operator !=.

impl Simulation for SnapSimulation

fn x(&self, time: f32) -> f32

The position at instant time.

fn dx(&self, time: f32) -> f32

The velocity — the derivative of position — at instant time.

fn is_done(&self, time: f32) -> bool

true once the motion has finished, within the tolerances.

fn tolerance(&self) -> Tolerance

The stopping thresholds.

impl StructuralPartialEq for SnapSimulation