Struct SpringSpec 

pub struct SpringSpec {
    pub response: f64,
    pub damping: f64,
}

A spring’s shape: how quick (response) and how bouncy (damping).

Fields

response: f64

Period of the undamped spring, in seconds.

damping: f64

Damping fraction: 1.0 is critical (no overshoot); below overshoots.

Implementations

impl SpringSpec

pub fn settling_within(duration: Duration) -> SpringSpec

A critically damped spring that is within 0.1 % of where it is going after duration: what a motion token (fast, base, slow) means as a spring.

pub fn critical(omega: f64) -> SpringSpec

A critically damped spring of natural frequency omega (rad/s).

pub fn from_params(params: SpringParams) -> SpringSpec

A spring from the token presets’ stiffness, damping and mass.

pub fn omega(self) -> f64

Angular frequency of the undamped spring.

pub fn slowed(self, factor: f64) -> SpringSpec

The same spring, factor times slower (a longer travel).

pub fn state(self, x0: f64, v0: f64, t: f64) -> (f64, f64)

Displacement and velocity t seconds into a segment that started at displacement x0 with velocity v0 (target at 0).

pub fn settle_secs(self, x0: f64, v0: f64, tolerance: f64) -> f64

Seconds until a segment starting at (x0, v0) stays within tolerance of its target for good.

Trait Implementations

impl Clone for SpringSpec

fn clone(&self) -> SpringSpec

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SpringSpec

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

Formats the value using the given formatter.

impl PartialEq for SpringSpec

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for SpringSpec

impl StructuralPartialEq for SpringSpec