Crate telar_motion_core 

The rsx motion engine: signal-backed values that chase a target over time, driven by a central frame ticker. An Animated<T> wraps a reactive signal whose value is interpolated toward target by a Curve (a Tween or a Spring); tick advances every registered animation once per frame. Colors interpolate in Oklch (see Lerp) as a deliberate perceptual choice.

Structs

Animated

A signal-backed value that chases a target over time under a Curve, driven by the central ticker.

Continuous

Keeps frames coming while it lives, for content Telar cannot see changing.

Keyframes

A signal-backed, autonomous multi-step animation: it plays a fixed sequence rather than chasing a live target, driven by the same central ticker as crate::Animated.

KeyframesBuilder

Accumulates steps for a Keyframes sequence before it starts.

Spring

A physical spring parameterized by raw stiffness, damping, and mass.

Tween

A time-based interpolation over a fixed duration shaped by easing.

Enums

Curve

The motion model backing an crate::Animated value.

Easing

Timing function mapping normalized time t in [0, 1] to eased progress.

Repeat

How a Keyframes sequence behaves once it reaches its last step.

Traits

Lerp

Interpolation plus the minimal vector-space operations the engine needs.

Functions

has_active

Whether any animation is still unsettled; the runner uses this to keep scheduling frames. Non-mutating: a Weak can go dead between tick and this call, so it re-tests liveness rather than trusting emptiness.

has_continuous

Whether any Continuous region is alive. The runner keeps scheduling frames while it is true, and moves the content generation so the renderer cannot mistake identical commands for an identical frame.

reset

Drop all registered animations; parallels reactive reset_runtime on tree teardown / hot reload.

set_scale

Set the global time scale (D5). 1.0 is normal; 0.0 makes animations jump instantly to their targets; values in between slow motion down. Negative inputs clamp to 0.0.

spring

Build a Spring from stiffness and damping; mass defaults to 1.0.

tick

Integrate every active animation to now, publishing changed values and deregistering settled ones.

tween

Build a Tween from a duration and easing.