Struct SpringConfig 

pub struct SpringConfig {
    pub damping: f64,
    pub stiffness: f64,
    pub mass: f64,
    pub duration: Option<f64>,
    pub rest_threshold: Option<f64>,
}

Fields

damping: f64

stiffness: f64

mass: f64

duration: Option<f64>

Force the spring to visually settle at exactly this many seconds (issue #167 lot E), instead of leaving the settle time as an emergent, hard-to-predict consequence of damping/stiffness/ mass. Implemented as a linear rescale of the time axis fed to the physics solver (engine::animator::spring_value): the spring’s shape — number of oscillations, overshoot amplitude — is a function of damping/stiffness/mass alone and is unchanged; only how fast that shape plays back changes. None (default) leaves the natural, emergent settle time in place.

This does not resize the enclosing keyframe segment (the delay/duration on the surrounding AnimationTiming, or the author’s own keyframe times on a keyframes effect): those still decide when the segment starts and how long it spans. Set that enclosing span to at least duration (rustmotion info reports the computed settle time so you don’t have to guess), or the segment’s own end will still cut the spring’s motion short.

rest_threshold: Option<f64>

How close to the target counts as “at rest”, as a fraction of the total 0→1 travel (e.g. 0.01 = 1%). Defaults to engine::animator::DEFAULT_SPRING_REST_THRESHOLD (0.5%) when unset. Read by engine::animator::spring_rest_time — the “how long until this spring settles” measurement rustmotion info surfaces — and, when duration is set, by the remap above to know what “settled” means. A critically- or over-damped spring approaches its target asymptotically and never reaches it exactly, which is precisely why this threshold exists.

Trait Implementations

impl Clone for SpringConfig

fn clone(&self) -> SpringConfig

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SpringConfig

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

Formats the value using the given formatter.

impl Default for SpringConfig

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for SpringConfig

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl JsonSchema for SpringConfig

fn schema_name() -> String

The name of the generated JSON Schema.

fn schema_id() -> Cow<'static, str>

Returns a string that uniquely identifies the schema produced by this type.

fn json_schema(generator: &mut SchemaGenerator) -> Schema

Generates a JSON Schema for this type.

fn is_referenceable() -> bool

Whether JSON Schemas generated for this type should be re-used where possible using the $ref keyword.

impl PartialEq for SpringConfig

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for SpringConfig

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for SpringConfig