Struct SpringSpec 

pub struct SpringSpec {
    pub damping_ratio: f32,
    pub stiffness: f32,
    pub settle_progress: f32,
    pub settle_velocity: f32,
}

Physical spring parameters. Duration is emergent (determined by physics), not specified.

Fields

damping_ratio: f32

Damping ratio ζ: 0 = undamped, <1 = underdamped (overshoot), 1 = critically damped,

1 = overdamped.

stiffness: f32

Stiffness k: higher = faster, snappier response.

settle_progress: f32

Progress threshold for settling: when |progress - 1.0| < this, the spring is considered visually close enough to the target and stops. Default: 0.005 (0.5%).

settle_velocity: f32

Velocity threshold for settling (in progress-units/second). Default: 0.1.

Implementations

impl SpringSpec

pub const fn new(damping_ratio: f32, stiffness: f32) -> Self

pub const fn gentle() -> Self

Gentle preset: low overshoot, moderate speed.

pub const fn bouncy() -> Self

Bouncier preset: more overshoot, faster.

pub const fn crit() -> Self

Critically damped: no overshoot, fast settle.

pub const fn stiff() -> Self

Snappy preset: high damping, high stiffness.

pub const fn with_settle_progress(self, threshold: f32) -> Self

Set the settling threshold in progress units. Lower values = more precise settling. For example, 0.001 means the spring stops when within 0.1% of the target.

pub const fn with_settle_velocity(self, threshold: f32) -> Self

Set the velocity threshold for settling (progress-units/second).

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 Copy for SpringSpec

impl Debug for SpringSpec

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

Formats the value using the given formatter.