Struct MaterialSpringState 

pub struct MaterialSpringState { /* private fields */ }

A velocity-continuous spring for interactive controls whose target may change mid-flight.

Call Self::advance with frame time, then Self::retarget on an input change. Retargeting preserves both the current position and its physical velocity, including when the target reverses direction. No allocations or numerical integration are involved.

Implementations

impl MaterialSpringState

pub fn new(spec: MaterialSpringSpec, value: f64) -> Self

pub fn current(&self) -> MaterialSpringSample

pub fn target(&self) -> f64

pub fn retarget(&mut self, target: f64)

pub fn set_spec(&mut self, spec: MaterialSpringSpec)

Changes the motion scheme without discontinuously resetting the live state.

pub fn set_reduced_motion(&mut self, reduced_motion: bool)

pub fn advance(&mut self, seconds: f64) -> MaterialSpringSample

pub fn is_at_rest( &self, position_threshold: f64, velocity_threshold: f64, ) -> bool

pub fn finish(&mut self)

Trait Implementations

impl Clone for MaterialSpringState

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 MaterialSpringState

impl Debug for MaterialSpringState

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

Formats the value using the given formatter.